CN105307616A - Underwear-style worn article and method for producing same - Google Patents

Abstract

The present invention provides a shorts-type wearing article, which includes an abdominal portion (21), a crotch portion (13), and a back portion (23), and includes a side edge portion (21A) of the abdominal portion (21), ( 21B) The side sealing part (25) formed by joining the side edge parts (23A) and (23B) of the back side part (23), and the laminated first The exterior body (11) formed by the sheet (33) and the second sheet (31), the exterior body (11) has stretchability in the width direction, and the first sheet (33) has a plurality of The slit area (71) of the slit portion (38) has rows of slit areas (71) arranged at intervals in the width direction of the first sheet (33).

Description

Pants-type wearing article and manufacturing method thereof

technical field

The present invention relates to a shorts-type wearing article and a manufacturing method thereof.

Background technique

Disposable underpants-type diapers, disposable underpants, and the like are known as underpants-type wearing articles. As a conventional underpants-type diaper, what combined an exterior body and an absorptive main body can be mentioned. The above-mentioned exterior body is generally composed of a member in which an inner layer material and an outer layer material are laminated, and attempts have been made to improve the form or structure of the parts of the outer body.

For example, Patent Document 1 discloses a product outer surface formed by laminating a band-shaped frill member and stretchable elastic member multiple times as an outer sheet of a pants-type disposable diaper. In this diaper, the undulating portions of the frill members are partially overlapped in steps so as to hide the elastic elastic members of the other frill members, thereby forming an outer shape like a frill skirt. In addition, Patent Document 2 discloses a diaper in which a plurality of tape pieces are partially overlapped on the waist outer surface of a disposable diaper as shown in FIG. 7 . It is considered that thereby, a plurality of pleats projecting on the outer surface of the diaper can be formed.

In contrast, Patent Document 3 discloses a wearing sample in which a two-layer structure is separated in the lengthwise direction from the viewpoint of improving air permeability, stretchability, and softness in the waist region of a shorts-type wearing article. There are a plurality of single-layer regions spaced apart. The single-layer region is formed by laminating a plurality of strip-shaped sheets (first sheet) and the second sheet at intervals.

prior art literature

patent documents

Patent Document 1: Japanese Patent No. 4659109

Patent Document 2: Specification of US Patent Application Publication No. 2008/0234648

Patent Document 3: Japanese Patent Laid-Open No. 2012-139247

Contents of the invention

The present invention provides a shorts-type wearing article, which includes an abdominal portion disposed on the abdominal side of the wearer, a crotch portion disposed on the crotch portion, and a back portion disposed on the back side, and includes a side of the abdominal portion. In the side seal part in which the edge part is joined to the side edge part of the back part, an exterior body formed by laminating a first sheet and a second sheet is arranged on the above-mentioned abdominal part and the above-mentioned back part. The first sheet has stretchability in the width direction, and the first sheet has a slit region in which a plurality of slits are arranged in the longitudinal direction, and has rows of the slit regions arranged at intervals in the width direction of the first sheet.

In addition, the present invention provides a method of manufacturing a shorts-type wearing article including an abdominal portion disposed on the abdominal side of the wearer, a crotch portion disposed on the crotch portion, and a back portion disposed on the back side. On the side, the method for manufacturing the underpants-type wearing article is characterized in that the continuous body of the first sheet and the continuous body of the second sheet forming the outer body of the underpants-type wearing article are fed separately, and includes the following steps: A step of forming a slit region on the continuous body of the first sheet and forming a plurality of the slit regions at intervals in the conveying direction, wherein the slit regions are spaced apart in a direction perpendicular to the conveying direction It is formed by disposing a plurality of slits formed along the conveying direction; the above-mentioned continuous body of the first sheet and the continuous body of the second sheet are laminated, and between the two continuous bodies, avoiding the above-mentioned slits, stretch the elastic body Introduce in a long state, using the continuous body of the first sheet and the continuous body of the second sheet to clamp the elastic body and join and fix it, so as to form the abdominal part and the back part of the outer body; The side part and the above-mentioned back side part face and overlap, and the steps of joining the two side edges of the abdomen side part and the back side part respectively to form a side seal part; Steps with items.

Description of drawings

Fig. 1 is a perspective view showing a preferred embodiment (first embodiment) of the underpants-type wearing article of the present invention.

Fig. 2 is an exploded perspective view showing a preferred embodiment of the underpants-type wearing article of the present invention.

Fig. 3 is a partially sectional plan view showing a ventral portion of an exterior body in the underpants-type wearing article according to the first embodiment.

4 shows a first example of the shorts-type wearing article of the first embodiment, (1) is a perspective view, (2) is an enlarged cross-sectional view of main parts of the exterior body including the slit area, and (3) is a sectional view including the slit area. An enlarged plan view of main parts of the ventral part of the exterior body.

Fig. 5 is an enlarged view showing a slit region of the exterior body in the underpants-type wearing article according to the first embodiment.

6 shows a second example of the shorts-type wearing article of the first embodiment, (1) is a perspective view, (2) is an enlarged cross-sectional view of main parts of the exterior body including the slit area, and (3) is a sectional view including the slit area. An enlarged plan view of main parts of the ventral part of the exterior body.

7 shows a third example of the shorts-type wearing article of the first embodiment, (1) is a perspective view, (2) is an enlarged cross-sectional view of main parts of the exterior body including the slit area, and (3) is a sectional view including the slit area. An enlarged plan view of main parts of the ventral part of the exterior body.

8 shows a fourth example of the shorts-type wearing article of the first embodiment, (1) is a perspective view, (2) is an enlarged cross-sectional view of main parts of the exterior body including the slit area, and (3) is a sectional view including the slit area. An enlarged plan view of main parts of the ventral part of the exterior body.

9 shows a fifth example of the shorts-type wearing article of the first embodiment, (1) is a perspective view, (2) is an enlarged cross-sectional view of main parts of the exterior body including the slit area, and (3) is a sectional view including the slit area. An enlarged plan view of main parts of the ventral part of the exterior body.

Fig. 10 is a perspective view showing a second embodiment of the underpants-type wearing article.

Fig. 11 is a developed plan view showing the outer layer material (first sheet material) in the underpants-type wearing article according to the second embodiment from the non-skin-contacting surface side.

Fig. 12 is a perspective view schematically showing a manufacturing procedure of a first embodiment of a preferred embodiment (first embodiment) of the method for manufacturing the underpants-type wearing article of the present invention.

Fig. 13 schematically shows the main part of the first embodiment, (1) is a plan view, and (2) is a front view.

Fig. 14 is a front view schematically showing a main part of the manufacturing steps of the second embodiment of the method of manufacturing the underpants-type wearing article of the present invention.

Fig. 15 is a front view schematically showing a main part of the manufacturing steps of the third embodiment of the manufacturing method of the underpants-type wearing article of the present invention.

Fig. 16 is a front view schematically showing a main part of the manufacturing steps of the fourth embodiment of the method of manufacturing the underpants-type wearing article of the present invention.

Fig. 17 is a plan view schematically showing the manufacturing steps of the fifth embodiment of the manufacturing method of the underpants-type wearing article of the present invention.

Fig. 18 is a schematic plan view showing a modified example of the manufacturing process of the fifth embodiment.

Fig. 19 is a perspective view schematically showing a manufacturing procedure of a preferred embodiment (second embodiment) of the method for manufacturing the underpants-type wearing article of the present invention.

The above-mentioned and other characteristics and advantages of the present invention will become more apparent from the following description.

detailed description

With regard to underpants-type wearing articles typified by the above-mentioned underpants-type diapers, users demand a usability that is not different from that of underpants. As in the aforementioned Patent Documents 1 and 2, in the configuration in which the band-shaped sheet base materials serving as the waist hem member are partially overlapped, there is a two-layer structure or a three-layer structure, and the air permeability is poor. On the other hand, in the aforementioned Patent Document 3, by providing a single-layer region, it is possible to improve air permeability and flexibility while maintaining stretchability.

The present invention relates to a shorts-type wearing article having increased strength of an outer body while maintaining high air permeability, flexibility, and stretchability. Furthermore, the present invention relates to a method for manufacturing a shorts-type wearing article with a two-layer structure in which an exterior body having high air permeability and flexibility is stably formed with high precision when manufacturing the underpants-type wearing article.

A preferred embodiment (first embodiment) of the underpants-type wearing article of the present invention will be described below with reference to FIGS. 1 to 3 .

In the underpants-type wearing articles 10 and 100 in this specification, the length direction of the underpants-type wearing articles is referred to as the Y direction, and the width direction of the underpants-type wearing articles is referred to as the X direction, which is also referred to as the "waist direction".

As shown in FIGS. 1 and 2 , the underpants-type wearing article 10 of this embodiment is, for example, a underpants-type diaper, and includes an abdominal portion 21 disposed on the abdomen side of the wearer, a crotch portion 13 disposed on the crotch portion, and a crotch portion disposed on the crotch portion. Dorsal portion 23 on the dorsal side. Hereinafter, this underpants-type diaper 10 (it will only be called the diaper 10 hereafter) is demonstrated in detail.

The pants-type diaper 10 includes an exterior body 11 forming an abdominal portion 21 and a back portion 23 , and a liquid-retentive absorbent main body 40 forming a crotch portion 13 .

In the exterior body 11, one side edge portion 21A of the abdomen portion 21 is joined to one side edge portion 23A of the back portion 23, and the other side edge portion 21B of the abdomen portion 21 is joined to one side edge portion of the back portion 23. 23B engages. The junction part forms side seal parts 25 and 25 protruding outward in the width direction of the diaper 10 . Through this joining, the exterior body 11 is formed into a ring shape. In addition, the exterior body 11 has stretchability in the waist direction of the underpants-type diaper 10 .

The absorbent main body 40 forms the crotch portion 13 covering the excretion point of the wearer, and is joined to the exterior body 11 so as to be bridged over the abdominal portion 21 and the back portion 23 . This absorptive main body 40 reaches to the vicinity of the lower part of the waist opening part 12 of the exterior body 11. As shown in FIG.

Thus, as shown in FIG. 3 , in the waist region sandwiched between the side seal portions 25 , the exterior body 11 includes a central region M where the absorbent main body 40 is disposed and side regions S, S on both sides thereof. The central region M and the side regions S are regions that divide each of the abdominal portion 21 and the back portion 23 of the exterior body 11 having the body length width H in the width direction. The central region M includes a central portion M1 corresponding to the arrangement width of the absorptive main body 40 and adjacent portions M2 on both sides thereof. From the standpoint of joining and fixing of the elastic body described later and the strength of the member, the vicinity portion M2 is preferably in the range of 10 mm or more in the width direction, and more preferably in the range of 30 mm or more. The upper limit thereof is preferably within a range of 80 mm or less, more preferably within a range of 50 mm or less. On the other hand, the side region S includes a side region inner portion S1 where a slit portion 38 described later is disposed, and a side region outer portion S2 near the side seal portion 25 . From the same viewpoint as the vicinity portion M2 in the central region M, the side region outer portion S2 is preferably 60 mm or more in the width direction, and more preferably 100 mm or more. The upper limit thereof is preferably within a range of 300 mm or less, more preferably within a range of 200 mm or less.

In addition, the above-mentioned "waist region" refers to the region from approximately the upper edge of the waist opening 12 in the direction to the lower part, that is, the lengthwise direction (Y direction), to the position near the outer base of the thigh. Also, the body length and width H of the waist region is divided into a waist region H1 near the waist opening 12 and a lower abdominal region H2 therebelow. In this division, the region in which the absorbent body 40 is arranged can be defined as the lower abdomen region H2, and the upper part can be defined as the waist region H1. In addition, the waist region H1 also varies depending on the use of the diaper, and can also be defined as a region approximately half to one quarter above the width H of the body length.

The exterior body 11 is formed by laminating and joining the outer layer material 33 (first sheet) on the non-skin contacting side and the inner layer 31 (second sheet) on the skin contacting side. A plurality of slits 38 that are horizontally long in the width direction (X direction) of the diaper 10 are partially formed on the outer sheet 33 . That is, the slit portion 38 is arranged not over the entire width of the outer layer material 33 but over a part thereof with a predetermined width, whereby the outer layer material maintains the integrity of the sheet shape of the length and width H without being separated.

A plurality of the slit portions 38 are arranged in the longitudinal direction (Y direction) to constitute the slit region 71 . Here, the slit portion 38 refers to a portion obtained by cutting the first sheet forming the outer layer material 33 finely. As shown in FIG. 3 , it may be a linear slit or a part obtained by cutting out a member having a width. In consideration of the strength of the member, linear slits are preferable. Furthermore, in FIG. 1 or FIG. 3 , only the configuration of the outer layer material 33 of the abdominal part 21 is shown. Preferably, the outer layer material 33 of the back side part 23 is similarly formed with a slit. The slit part 33 is formed in the outer layer material 33 of any one of the abdominal part 21 and the back part 23 (it is the same in FIGS. 4-10). In addition, another sheet may be laminated on the outer layer 33 (first sheet) and the inner layer 31 (second sheet).

The slit region 71 is formed on both side regions S, S in the width direction (X direction) in the lower abdomen region H2, respectively. More specifically, a slit region 71 (hereinafter also referred to as a slit) is formed in the side region inner portion S1 of the side region S except for the side region outer portion S2 in the vicinity of the joint base portion of the side seal portion 25 . area 71A). In addition, in the waist region H1, a slit region 71 is also formed in a region (S1-M-S1) connecting the left and right side region inner parts S1, S1 of the outer layer material 33 (hereinafter, this part is also referred to as a slit region). area 71B). In these slit regions 71 , the portion sandwiched between the slit portions 38 adjacent in the longitudinal direction becomes the horizontally long belt portion 39 .

On the other hand, the central region M (M2+M1+M2) of the outer layer material 33 is formed as a non-slit region 72 in which the slit portion 38 is not formed in the lower abdomen region H2 (hereinafter, in order to distinguish this region from other non-slit regions). , also referred to as the non-slit region 72M). In addition, the side area outer side portion S2 near the side seal portion 25 is formed as a non-slit area 72 in the entire area of the body length width H of the outer layer material 33 (hereinafter, in order to distinguish this area from other non-slit areas, it is also referred to as a non-slit area). area 72S).

In this way, the slit region 71A of the outer layer material 33 is formed in rows (slits) arranged at intervals on the left and right side region inner parts S1 , S1 across the non-slit region 72M in the width direction of the lower abdomen region H2 . Further, when the ventral portion 21 and the back portion 23 of the outer layer material 33 are viewed centering on the side seal portion 25 , the slit regions 71A are formed in rows arranged at intervals in the width direction via the non-slit region 72S. Accordingly, the belt portions 39 in the slit area 71 are connected in the adjacent non-slit area 72 without being completely separated from each other.

The length in the width direction of the non-slit regions 72M and 72S in the outer layer material 33 can be appropriately set in consideration of the following action of the slit region 71 and the joining strength between the outer layer material 33 and the inner layer material 31 . In order to effectively express the role of the slit region 71, the length of the width direction of the non-slit region 72M (m1=the length of the central region (M2+M1+M2)) is relatively long with respect to the length of the width direction of the slit region 71A (m2=the left and right sides). The ratio (m1/m2) of the region inner portion (S1+S1) length) is preferably 0.99 or less, more preferably 0.94 or less. In order to secure the joint strength, the lower limit thereof is preferably 0.3 or more, more preferably 0.5 or more. In addition, the ratio (m3/m2) of the length in the width direction of the non-slit region 72S (m3=the length of the side region outer portion (S2+S2)) to the length in the width direction (m2) of the slit region 71A (m3/m2) is preferably 0.7 or less, More preferably, it is 0.5 or less. The lower limit thereof is preferably 0.1 or more, more preferably 0.2 or more. In addition, the length in the longitudinal direction of the non-slit regions 72M and 72S is not limited to that shown in FIG. 3 , and may be set to any length. For example, the non-slit region 72M may be formed over the entire length and width H of the body.

The lamination region of the outer layer material 33 and the inner layer material 31 is integrally formed by joining the two sheets, and has stretchability in the width direction (X direction) which is the waist direction of the underpants-type diaper 10 .

Specifically, in the slit region 71 of the outer layer material 33, each of the plurality of belt portions 39 is joined to the inner layer material 31 to have stretchability. In the non-slit region 72 , the outer layer material 33 and the inner layer material 31 are joined in the shape of the body length width H to have stretchability. This stretchability is also preferably obtained by providing an elastic body 35 between the inner layer material 31 and the outer layer material 33 . In this case, the elastic body 35 has stretchability by being sandwiched between the inner layer material 31 and the outer layer material 33 in an extended state. Alternatively, as will be described in detail below, it is also preferable that both or either of the inner layer material 31 and the outer layer material 33 are made of a stretchable material.

In the slit region 71 , the gap of the slit portion 38 expands due to the contraction of the stretchable exterior body in the width direction, and serves as an air vent for the abdominal portion 21 and the back portion 23 . In addition, when the outer body 11 expands and contracts due to the movement of the wearer's body after wearing the diaper 10, the vent openings are opened and closed in accordance with the movement, thereby promoting the discharge of moisture in the diaper and further improving the air permeability.

Furthermore, since there are a plurality of slit portions 38 , the slit region 71 of the outer layer material 33 is more easily deformed than the non-slit region 72 , and thus has excellent flexibility. Furthermore, due to the stretchability, each belt portion 39 is twisted to form fine pleats, so that the waist area becomes soft.

The high air permeability and softness produced by the slit area 71 are sustained by the non-slit area 72 connected in the above-mentioned lengthwise direction. This is because the non-slit region 72 reinforces the reduction in strength due to the cutout of the slit region 71 and maintains the stretchability of the slit region 71 . That is, in the slit region 71 , the belt portions 39 operate independently, and are particularly likely to be strongly subjected to shearing forces such as stretching force in the width direction and friction with clothing or the like. However, as described above, the ends of the respective belt portions 39 are connected in the non-slit region 72 , so that the integrity as the first sheet can be ensured and the strength can be increased compared with the completely separated thin belt pieces. In addition, the non-slit region 72 of the outer layer material 33 is joined to the inner layer material 31 over the entire surface of the body length width H, and thus can be compared with the joining of the outer layer material 33 and the inner layer material 31 composed of only the belt portion 39 . Improve the joint strength of the two layers as a whole.

Thereby, stretchability is imparted to the entire exterior body 11 , and strength capable of withstanding the stretching force is imparted. In addition, the assurance of the strength and the high air permeability and softness by the slit region 71 can be realized at the same time, and the continuity of the excellent function as the exterior body 11 can be improved.

As described above, since the strength is maintained by the non-slit region 72 of the outer layer material 33, the number and arrangement of the slit portions 38 and the width of the belt portion 39 can be arbitrarily set, enabling free design. For example, in the arrangement of the slits in the lengthwise direction, the intervals between the slits 38 may be increased as the crotch approaches. In addition, the length of the slit portion 38 may be changed depending on the position. For example, in the arrangement in the lengthwise direction, the length may become longer toward the crotch portion, or the slit portion itself may be formed as a row of intermittent cuts in the width direction. In addition, when not cutting horizontally in a straight line but performing an S-shaped cut, for example, an appearance more reminiscent of flexibility can be obtained. Furthermore, the size and arrangement of the slit area 71 can also be set arbitrarily.

As the material sheets of the inner layer material 31 and the outer layer material 33, for example, air-through non-woven fabrics, hot roll non-woven fabrics, spunlace non-woven fabrics, spun-bonded non-woven fabrics, melt-blown non-woven fabrics, etc. Nonwoven fabrics, woven fabrics, knitted fabrics, resin films, and the like formed by the above-mentioned manufacturing method can also be used as sheets in which these are laminated and integrated.

In addition, the inner layer material 31 is preferably formed of a nonwoven fabric from the viewpoint of improving air permeability and texture, and is preferably formed of a water-repellent nonwoven fabric from the viewpoint of preventing leakage of excrement.

Adhesion will be described with respect to the above-mentioned absorbent body 40 . As shown in FIG. 2 , the absorptive main body 40 includes, as an example, a topsheet 41, a backsheet 42, and an absorptive core 43 having liquid retentivity provided therebetween. The surroundings of the absorptive core 43 are wrapped with the wrapping sheet 44 by bending the wrapping sheet 44 in the direction of the arrow at the position of the dotted line shown in the figure. Furthermore, a pair of side part sheets 46 and 46 which form the inner three-dimensional gathers 45 are arrange|positioned at the skin contact surface side. The above-mentioned back sheet 42 and crotch sheet 47 are arranged in this order on the non-skin contacting surface side.

The absorptive main body 40 can use the material normally used for this kind of diaper, and it does not specifically limit.

The top sheet 41 is preferably formed of a hydrophilic nonwoven fabric. As the hydrophilic nonwoven fabric, nonwoven fabrics called air-through nonwoven fabrics, point bonded nonwoven fabrics, spunbond nonwoven fabrics, spunlace nonwoven fabrics, and three-dimensional forming nonwoven fabrics can be preferably used, and the fibers thereof It is a single fiber of polypropylene, a composite fiber of polypropylene and polyethylene, a composite fiber of polyethylene terephthalate and polyethylene, etc., and is a fiber subjected to a hydrophilic treatment. Hydrophilic fibers such as rayon may also be included. Moreover, the sheet|seat which perforated the resin film can also be used as the surface sheet 41. A composite sheet in which the various nonwoven fabrics described above and a perforated resin film are integrated can also be used.

The back sheet 42 is not particularly limited as long as it has water repellency. In addition, it is preferable that the back sheet 42 has moisture permeability. As a sheet having water repellency and moisture permeability, for example, a porous film obtained by melt-blending a hydrophobic thermoplastic resin with a fine inorganic filler including calcium carbonate or an incompatible organic polymer, etc. It is obtained by uniaxially or biaxially stretching the film to form a film. As a thermoplastic resin, polyolefin is mentioned. Examples of the polyolefin include high-low-density polyethylene, linear low-density polyethylene, polypropylene, polybutene, and the like, and these can be used alone or in combination. Various nonwoven fabrics can be used for the crotch sheet 47 in order to give a cloth-like appearance.

As the absorptive core 43, for example, a fiber aggregate or a member using an absorbent polymer together can be used. As the fibers constituting the fiber aggregate, hydrophilic natural fibers such as pulp fibers and cotton, or synthetic fibers (preferably hydrophilic or hydrophilized fibers) can be used. The basis weight is not particularly limited, but is preferably not less than 150 g/m ² and not more than 500 g/m ² . In addition, the wrapping sheet 44 can use hydrophilic tissue paper or other thin paper (tissue paper), a nonwoven fabric containing hydrophilic fibers such as cotton or rayon, or a synthetic resin fiber that is hydrophilized. Non-woven fabrics (spunbond-meltblown-spunbond (SMS), spunbond-meltblown-meltblown-spunbond (SMMS), spunbond-spunbond-meltblown-spunbond (SSMS) and other composite nonwoven fabrics cloth) etc.

It is preferable to use a water-repellent nonwoven fabric for the side sheet 46, specifically, a spunbond nonwoven fabric, a spunbond-meltblown (SM) nonwoven fabric, an SMS nonwoven fabric, etc. are used.

As described above, the underpants diaper 10 of the first embodiment can maintain the same stretchability as the conventional underpants diaper to maintain the wearability on the body and the mobility of the body, and the incision of the slit portion 38 can improve air permeability. . In addition, the amount of pleats is increased by the action of the slit portion 38, and the waist area is soft and rich in flexibility. Furthermore, the diaper 10 has the strength to withstand various forces due to the synergistic effect of the slit region 71 and the non-slit region 72 of the outer sheet 33, and has excellent wearing comfort due to continuous air permeability, stretchability, and softness. Therefore, it is possible to reduce stuffiness even if the diaper is worn for a long time. In addition, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33, and the belt portions 39 are adjacent to each other, it is difficult to see through the skin, and the concealment of the skin can be improved.

Regarding the bonding, an example of the arrangement configuration of the outer layer material 33 , the inner layer material 31 , and the elastic body 35 will be described in relation to the above-mentioned preferred embodiment. First, the first example of the underpants-type diaper 10 of the first embodiment will be described, and the points of difference between the following other examples and the second embodiment will be described. Points not particularly described are the same as those of the first embodiment or the first example, and the described descriptions can be appropriately applied. Also, add the same symbol for the same material or part.

A first embodiment of the pants-type diaper 10 will be described with reference to FIG. 4 . As shown in FIG. 4, the pants-type diaper 10 (10A) of the first embodiment is the above-mentioned first embodiment of the pants-type diaper 10, using adhesives (not shown) such as hot-melt adhesives, through elastic The body 35 is a diaper having a structure in which the outer layer material 33 and the inner layer material 31 are bonded and fixed. A plurality of elastic bodies 35 are arranged in an extended state avoiding the slit portion 38 in the width direction, and are fixed to the outer layer material 33 and the inner layer material 31 . In the underpants-type diaper 10, one elastic body 35 is arrange|positioned with respect to one belt part 39, However, You may arrange|position several elastic bodies 35 with respect to one belt part 39. 4(2) shows a cross section of the exterior body 11 including the slit region 71, and the portion indicated by the arrow is the slit portion 38, and the outer layer material 33 is separated at this portion. In addition, it shows the state which folded back the inner layer material 31 toward the skin contact surface side in order to cover the part to which the absorptive main body 40 (not shown) was attached.

In the central region M of the exterior body 11 where the absorbent main body 40 is stacked, the elastic body 35 is cut at multiple locations, and the laminated region of the inner layer material 31 and the outer layer material 33 does not have substantial stretchability. That is, the inner end portion of the elastic body 35 is bonded and fixed in a planar shape over the non-slit region 72M in the longitudinal direction of the vicinity portion M2 of the central region M.

The size of the belt portion 39 is appropriately set according to the length of the slit portion 38 , the arrangement interval, and the like. The width of the belt portion 39 is preferably at least substantially equal to or greater than the width of the elastic body 35 . For example, as a shorts-type diaper for babies, the belt portion 39 has a width of 1 mm or more, preferably 3 mm or more, and more preferably 5 mm or more. The upper limit thereof is 60 mm or less, preferably 40 mm or less, more preferably 30 mm or less. More specifically, it is not less than 1 mm and not more than 60 mm, preferably not less than 3 mm and not more than 40 mm, and more preferably not less than 5 mm and not more than 30 mm. Moreover, the length (length of the slit part 38) of the width direction (X direction) of the belt part 39 is 1 cm or more, Preferably it is 4 cm or more, More preferably, it is 6 cm or more. The upper limit thereof is 80 cm or less, preferably 60 cm or less, more preferably 30 cm or less. More specifically, it is 1 cm to 80 cm, preferably 4 cm to 60 cm, and more preferably 6 cm to 30 cm. Furthermore, when the slit portion 38 is not a continuous slit but an aggregate row of intermittent slits, the total length of the row is the length in the width direction of the slit portion. In addition, when the intervals of the intermittent cutouts are not constant intervals, the length of the width direction of the slit portion is defined as the row on the extension line of the same width direction and within the slit region.

The elastic body 35 is bonded to the outer layer material 33 and the inner layer material 31 by a method used in such articles, for example, a hot-melt adhesive can be used. The member to which the hot-melt adhesive is applied may be the elastic body 35 itself, or the outer layer material 33 or the inner layer material 31 sandwiching the elastic body 35 . In the slit region 71 of the outer layer material 33 (the side inner side portion S1 of the outer casing 11), since the application area of the belt portion 39 is small, it is preferable to coat the elastic body 35 itself so as to be in contact with the outer layer material 33 and the inner layer material 31. Engagement is fixed. On the other hand, in the non-slit regions 72M and 72S of the outer layer material 33 (the central region M and the side outer sides S2 of the exterior body 11), since the outer layer material 33 and the inner layer material 31 have a sufficient area in the body length width H, The strength as the exterior body 11 can be ensured by applying it to the surface of the two-layer sheet. At this time, the hot-melt adhesive may also be applied to the elastic body 35 disposed in the non-slit region 72 . By carrying out the coating method in this way, it is possible to prevent bleeding of the hot-melt adhesive and to appropriately increase the bonding strength.

A plurality of elastic bodies 35 are arranged in a stretched state in the width direction between the outer layer material 33 and the inner layer material 31 while avoiding the slit portion 38 , and are bonded and fixed. That is, the elastic body 35 is not exposed to the outside through the slit portion 38 , but is securely sandwiched between the outer layer material 33 and the inner layer material 31 , joined and fixed. Thereby, the elastic body 35 makes the outer layer material 33 and the inner layer material 31 which form the exterior body 11 stretchable in the width direction (X direction) which is a waist direction as a whole. The elastic body 35 uses a hot-melt adhesive as described above, and it is preferable not only to join with the narrow width of the belt portion 39 in the side region inner part S1, but also to join the outer layer in a planar and continuous manner in the central region M and the side part outer side S2. Material 33 and inner layer material 31. Thereby, it is possible to prevent the rubber from coming off not only by hot-melt adhesion applied to the elastic body 35 itself but also by fixing to the sheet surface of the exterior body 11 (by sandwiching the elastic body with the HM).

In the slit region 71 of the outer layer material 33 , the elastic body 35 is preferably disposed on the inside of the side edge portion 39S of the belt portion 39 . In detail, as shown in the partial enlarged view of the exterior body of Fig. 4 (1) and Fig. 4 (3), an elastic body 35 is fixed at the central part of the width (width in the Y direction) of each belt body 39, and the belt portion 39 is fixed to the inner layer material 31 at the central part of its width. On the other hand, the side edge portion 39S of the belt portion 39 is formed as a non-fixed portion 39F that is not joined to the inner layer material 31 .

A frill (frill) is formed on the belt body 39 by contraction of the elastic body 35 (see FIG. 5 ). In particular, pleats 7 separated from the inner layer material 31 are formed on the non-fixed portion 39F of the side edge portion 39S to form a pleat. The pleats 7 of the non-fixed portion 37F provide the diaper 10 with flexibility and soft touch. In addition, pleats are also formed on the corresponding inner layer material 31 . Thereby, the flexibility of the exterior body 11 as a whole improves. Furthermore, the pleats 7 of the non-fixed portion 39F are formed protruding toward the non-skin-contacting surface side, so that the air vents 8 of the slit portion 38 can be more reliably formed, and the air permeability of the above-mentioned first embodiment is further improved. In addition, the frills make the outer surface of the diaper 10 attractive.

In addition, the bonding position of the belt part 39 and the inner layer material 31 is not limited to the center part of the belt part 39's width (width in the Y direction), but may deviate to either side edge part 39S. That is, the belt portion 39 may have a long distance from the bonding position with the inner layer material 31 to one side edge and a short distance to the other side edge in its width. In this way, by changing the distance from the bonding position to the side edge, it becomes easier to form a hem at the one with the longer distance. Thereby, a large hem is formed in the upper and lower one side edge parts 39S of the belt part 39, and flexibility and air permeability are improved.

Furthermore, since the pleats 7 are not joined to the inner layer material 31, the flexibility of the inner layer material 31 in this portion is improved. Therefore, in the slit region 71 , the conformability to the unevenness of the body, that is, the conformability is good, and the flexibility of the body is maintained according to the movement of the body. In addition, it also flexibly responds to changes in the bulge of the wearer's abdomen before and after eating to reduce pressure on the body. Thus, the outer body 11 relaxes the fastening of the elastic body 35 and is gentle on the wearer's body.

Such flexibility is sustained by the synergistic effect of the slit region 71 and the non-slit region 72 as in the first embodiment described above. In particular, the inner end of the elastic body 35 is fixed to the vicinity M2 of the central region M to prevent the absorptive main body 40 from shrinking, and the elastic body 35 is prevented from falling off by joining the surface of the non-slit region 72M at this position.

In addition, the side seal part 25 is the part which seal-bonded the side edge part of the abdominal part 21 of the exterior body 11, and the side edge part of the back side part 23 of the exterior body 11, respectively, such as embossing. For example, in the state where the outer layer material 33 (33A) of the abdominal part 21 and the outer layer material 33 (33B) of the back side part 23 are arranged in the longitudinal direction (Y direction), the inner layer material 31 of the abdominal part 21 (31A) and the inner layer material 31 (31B) of the back side part 23 are mutually joined. Therefore, in the side seal part 25, the elastic body 35 (35A) arrange|positioned at the abdominal part 21 and the elastic body 35 (35B) arrange|positioned at the back side part 23 interpose the inner layer material 31 in the longitudinal direction (Y direction) configuration. Furthermore, the outer end portion of the elastic body 35 is planarly joined and fixed in the non-slit region 72S of the side region outer portion S2 near the side seal portion 25 . In this way, the outer end of the elastic body 35 is prevented from coming off by the surface bonding of the side region outer portion S2 in the vicinity of the side seal portion.

This configuration can also be applied to the example or the second embodiment using the elastic body 35 described below. In addition, in the Example which does not use the elastic body 35 demonstrated below, it is also possible to remove the elastic body 35 and apply.

As the raw materials of the inner layer material 31 and the outer layer material 33 , the sheets described in the above-mentioned first embodiment can be used. In addition, as the material of the elastic body 35, common elastic materials used in absorbent articles such as diapers and menstrual tampons can be used, and examples of raw materials include styrene-butadiene, butadiene, and isoprene. , synthetic rubber such as chloroprene, natural rubber, EVA (Ethylenevinylacetate, ethylene vinyl acetate), stretchable polyolefin, polyurethane, etc., as the form, the cross-section can be rectangular, square, circular, polygonal, etc. (rubber belt, etc.), or a multi-filament type filamentary member, etc. can be used.

As described above, in the underpants diaper 10A of the first embodiment, the synergy between the slit region 71 and the non-slit region 72 of the outer sheet 33 described in the underpants diaper 10 of the first embodiment can be obtained. to the effect. At the same time, the fit and conformability of the underpants diaper to the body are improved due to the stretchability of the elastic body 35 . And 10 A of diapers prevent the elastic body 35 from falling off at the time of use by the non-slit area|region 72, and it becomes a diaper excellent in the wearing feeling which maintains air permeability, stretchability, and softness. Furthermore, since the elastic body 35 is covered with the outer layer material 33 , the elastic body 35 can be protected by the outer layer material 33 . As a result, no external force is directly applied to the outer layer material 33, so the elastic body 35 is less likely to be broken. In addition, by forming frills, there is an effect of being able to create cuteness as a whole of the diaper. In addition, as the outer layer material 33, a colored or patterned sheet material may be used. By using such a sheet material, 10 A of underpants type diapers excellent in design property can be provided.

Furthermore, in the first embodiment shown in FIG. 4 , it is shown that the outer layer material 33 is a first sheet material having a slit portion 38 , and the outer layer material 33 (first sheet material) is placed through an elastic body 35 . Adjacently bonded on the inner layer material 31 as the second sheet, but for example, the inner layer material 31 may be the first sheet material having the slit 38, and the elastic body 35 may be interposed therebetween. A configuration in which the inner layer material 31 is bonded adjacently to the outer layer material 33 as the second sheet with a hot-melt adhesive. In this case, the inner layer material 31 is divided into a plurality in the slit region 71 to increase the amount of pleats and make the body side soft. In addition, it is possible to maintain the same stretchability as the conventional underpants-type diaper to maintain the wearability and the mobility of the body, and also to obtain air permeability at the portion between the inner layer materials 31 . Therefore, stuffiness can be reduced. In addition, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33, it is not easy to see through the skin, and the concealment property of the skin can be improved.

In addition, the outer layer material 33 on the abdominal side is the first sheet material having the slit portion 38, and the inner layer material 31 on the back side may also be the first sheet material having the slit portion 38. On the contrary, the inner layer material 31 on the abdominal side is The first sheet having the slit portion 38 may be the first sheet having the slit portion 38 as the outer layer material 33 on the back side.

Next, a second embodiment of the underpants-type diaper 10 will be described with reference to FIG. 6 . As shown in FIG. 6, the underpants-type diaper 10 (10B) of 2nd Example uses the elastic body 35 similarly to 1st Example, and makes the whole exterior body 11 have width direction stretchability. That is, the configuration and width of the outer layer material 33 are based on the first embodiment. The underpants-type diaper 10 (10B) of the second embodiment has a configuration in which the outer layer material 33 is fixed to the inner layer material 31 by the sealing part 37 . Furthermore, in the cross section of the slit region 71 shown in FIG. 6(2), the portion indicated by the arrow of the outer layer material 33 is the slit portion 38, and the sealing portion 37 is formed at the position indicated by the hollow triangle. In addition, in FIG. 6 (3), the sealing part 37 is formed in the position of a hollow quadrangle.

In this configuration, both ends of each elastic body 35 are firmly fixed by planar bonding of the outer layer material 33 and the inner layer material 31 in the non-slit regions 72M and 72S. On the other hand, parts other than both ends of each elastic body 35 are not fixed to the outer layer material 33 and the inner layer material 31 , and are stretchable. Therefore, in the laminated region of the outer layer material 33 and the inner layer material 31 , good stretchability can be obtained without hindering the stretchability of the elastic body 35 . In addition, by substantially not using an adhesive in the slit region 71 , it is possible to suppress bleeding of the adhesive.

In addition, in this configuration, the elastic body 35 is interposed in the slit region 72 , and the side edge 39S of the belt portion 39 of the outer layer 33 is bonded and fixed to the inner layer 31 by a plurality of sealing portions 37 . Accordingly, the elastic body 35 that is not bonded to the outer layer material 33 and the inner layer material 31 in the slit region 72 is less likely to deviate in the longitudinal direction (Y direction). Moreover, the non-fixed part 39F of the side edge part 39S located between the sealing parts 37 in the width direction forms the pleat 7, and becomes a hem. In addition, frills accompanying pleats are also formed on the inner layer material 31 corresponding to the non-fixed portion 39F. In this second embodiment, since the pleats (pleats) of the frills of each of the belt part 39 and the inner layer material 31 are formed between the belt part 39 and the inner layer material 31, there is a gap for ventilation in the body length direction (Y direction). , thus improving air permeability. In addition, pleats make the product aesthetically pleasing in design. In addition, the arrangement of the sealing part 37 does not have to be as regular as the configuration shown in FIG. 6 . In addition, in the structure shown in FIG. 6 , it is also possible to adopt a structure in which the position of the sealing portion 37 is staggered for each belt body 39 . Between the outer layer materials 33, further, the air permeability becomes good.

In the underpants-type diaper 10 (10B) of 2nd Example, the same effect as the underpants-type diaper 10 of said 1st Embodiment can be acquired. In addition, in the slit region 71, pleats 7 are formed in the non-fixed portion 39F, and at the raised portions of the pleats 7, the width direction between the outer layer material 33 and the inner layer material 31 (arrows in the drawing) Y direction) can also obtain air permeability. Therefore, air permeability can be ensured also in the portion of the inner layer material 31 to which the outer layer material 33 is pasted. Therefore, it is possible to provide the underpants-type diaper 10 (10B) which is excellent in stretchability, has good air permeability, and is very unlikely to be stuffy without losing flexibility despite being the outer body 11 having the laminated region.

A third embodiment of the underpants-type diaper 10 will be described with reference to FIG. 7 . As shown in FIG. 7, in the pants-type diaper 10 (10C) of the third embodiment, in the pants-type diaper 10 of the above-mentioned first embodiment, the outer sheet 33 itself has stretchability in the width direction (X direction), and is bonded together. The agent 32 is a diaper in which the outer layer material 33 is attached to the inner layer material 31 in a stretched state. As the adhesive, for example, a hot melt adhesive, a double-sided tape, or the like is used. The stretchability of the outer layer material 33 itself mentioned here means, for example, stretchability that can replace the stretchability provided by the above-mentioned elastic body.

As the stretchable outer layer material 33, a stretchable sheet such as a nonwoven fabric containing elastic fibers or an elastic film can be used. When emphasizing the touch on the skin and the appearance like cloth, it is preferable that the surface of these elastic sheets have a form of a fiber layer. When the fiber layer is non-stretchable, the fiber layer is stretched by drawing processing or the like so that the non-stretchable fiber layer does not hinder the stretchability of the stretch sheet. As the stretching process, for example, there is gulleting in which the bonds between fibers are locally cut or the fibers are stretched in the fiber layer, whereby stretchability can be expressed without hindering the stretchability of the stretch sheet. As shown in FIG. 7(3), irregularities (concaves are grooves 34) are formed on the surface of the outer layer material 33 by the groove processing.

The grooves 34 are formed at equal intervals, for example. In addition, when changing the degree of elasticity imparted for every position, the interval of the groove|channel 34 can also be changed. For example, when the thickness of the outer layer material 33 is 0.01 mm to 0.2 mm, the distance between the grooves 34 is set to be 2 mm to 5 mm in the region where strong stretchability is to be obtained, and in the region where weak stretchability is to be obtained , the interval between the grooves 34 is set to be 0.5 mm or more and 2 mm or less. The interval between the grooves 34 also changes according to the thickness of the outer layer material 33 . In addition, the processing method of the outer layer material 33 is not limited as long as it has desired stretchability by utilizing the groove 34 .

In addition, the belt portion 39 of the outer layer material 33 is based on the first embodiment. In the cross section of the slit region 71 shown in FIG. 7( 2 ), the portion indicated by the arrow of the outer layer material 33 is the slit portion 38 .

In addition, the outer layer material 33 on the absorptive main body 40 is also subjected to gullet processing as stretch processing. After the stretching process, the outer layer material 33 is stretched and joined to the inner layer material 31 . After joining, the outer layer material 33 and the inner layer material 31 are heat-sealed (cut by the elastic body) at the corresponding positions on the absorbent main body 40, so that the outer layer material 33 is inelasticized and the stretchability is lost. Therefore, the gullets of the outer sheet 33 provided on the absorbent main body 40 become inconspicuous.

As the above-mentioned stretchable outer layer material, for example, (1) a sheet in which the stretchable fiber layer is integrated on both sides or one side of the elastic fiber layer; (3) a sheet formed by integrating the two sides or one side of an elastic sheet made of an elastic film; A plurality of elastic filaments arranged so as to extend in one direction without intersecting, a stretch sheet in which an stretchable nonwoven fabric is bonded over its entire length in a non-stretched state, and the like.

As the sheet of the above (1), for example, (a) stretchable non-woven fabric, in which a non-elastic non-elastic fiber layer is arranged on at least one side of the elastic fiber layer, and the constituent fibers of the elastic fiber layer of the two fiber layers maintain the fiber form In the state, the entire surface is bonded by thermal welding of the fiber intersections, a state in which a part of the constituent fibers of the inelastic fiber layer enters the elastic fiber layer, and a state in which a part of the constituent fibers of the elastic fiber layer enters the inelastic fiber layer Either state or both states. In addition, as the above-mentioned sheets (1) to (3), it is preferable to use (b) a stretchable sheet obtained by stretching a laminated sheet including an elastic layer having elastic stretchability and an inelastic non-elastic fiber layer. , and the above two layers are stacked in the thickness direction and partially bonded. As one method for obtaining stretchable fibrous layers or nonwoven fabrics such as stretchable ones or the above-mentioned (1) to (3), it is preferable to perform the above-mentioned alveolar processing.

In the stretchable nonwoven fabric of the above (a), at the interface between the elastic fiber layer and the non-elastic fiber layer and its vicinity, the intersection points of the constituent fibers of the elastic fiber layer and the constituent fibers of the non-elastic fiber layer are thermally welded, and the entire surface Join evenly. By bonding over the entire surface, the two layers are prevented from being separated to form a space, and thus a stretchable nonwoven fabric with a multi-layer structure has a sense of unity like a single-layer nonwoven fabric. The above-mentioned state in which the constituent fibers of the elastic fiber layer maintain a fiber form means that most of the constituent fibers of the elastic fiber layer are not deformed into a film shape or a film structure containing fibers even when heat or pressure is applied. state. In addition, the elastic fiber layer is thermally welded at the intersection points of the constituent fibers within the layer. Likewise, the non-elastic fiber layers are thermally welded at the intersections of the constituent fibers within the layers.

When the non-elastic fiber layer is disposed on both sides of the elastic fiber layer, at least on either side, a part of the constituent fibers of the elastic fiber layer enters the elastic fiber layer, and a part of the constituent fibers of the elastic fiber layer enters at least one of the non-elastic fiber layers. Either or both of the states.

The elastic fiber layer has the property of being able to stretch and contract when released from the force of stretching. In addition, it is an aggregate of elastic fibers. In addition, the elastic fiber layer may be in the form of a mesh or nonwoven fabric made of elastic fibers. For example, it can be a nonwoven fabric formed by a spun-blown method, a spun-bonded method, a melt-blown method, or the like. Particular preference is given to webs obtained by the spin-blown method. As the constituent fibers of the elastic fiber layer, for example, fibers made of a thermoplastic elastomer, rubber, or the like can be used. In particular, fibers made of thermoplastic elastomers can be melt-spun using an extruder in the same way as ordinary thermoplastic resins. In addition, the fibers obtained in this way are easy to be thermally welded, so they are suitable for use as air-through non-woven fabrics. The stretchable nonwoven fabric of this embodiment of the basic structure. As thermoplastic elastomer, can enumerate SBS (StyreneButadieneStyrene, styrene-butadiene-styrene), SIS (Styrene-Isoprene-Styrene, styrene-isoprene-styrene), SEBS (Styrene-Ethylene-Butylene- Styrene, styrene-ethylene-butylene-styrene), SEPS (Styrene-Ethylene-Propylene-Styrene, styrene-ethylene-propylene-styrene) and other styrene-based elastomers, olefin-based elastomers, polyester-based elastomers body and polyurethane elastomers. These can be used individually by 1 type or in combination of 2 or more types.

The inelastic fiber layer has elongation but is substantially inelastic. The elongation mentioned here may be any of the following cases: the case where the constituent fibers themselves are elongated; even if the constituent fibers themselves are not elongated, they are separated by two fibers that have been thermally welded at the intersection points of the fibers, Or when the three-dimensional structure formed by a plurality of fibers is structurally changed by thermal fusion of fibers or the like, or the constituent fibers are broken, and the entire fiber layer is elongated. Examples of fibers constituting the inelastic fiber layer include fibers containing polyethylene (PE), polypropylene (PP), polyester (PET or PBT), polyamide, and the like. The fibers constituting the inelastic fiber layer may be short fibers or long fibers, and may be hydrophilic or water repellent. In addition, core-sheath type or side-by-side type conjugate fibers, split fibers, modified cross-section fibers, crimped fibers, heat-shrinkable fibers, and the like can also be used. These fibers can be used alone or in combination of two or more. The inelastic fibrous layer may be a web or nonwoven of continuous filaments or staple fibers.

The stretchable sheet of (b) above is obtained by stretching a laminated sheet by laminating non-elastic, non-elastic fiber layers on both sides or one side of an elastic layer having elastic stretchability, and forming them as Regular patterns are partially joined together.

The effect of the underpants-type diaper 10 (10C) of 3rd Example is the same as what was described about the underpants-type diaper 10 of said 1st Embodiment. Furthermore, in this embodiment, the elastic body disposed between the inner layer material 31 and the outer layer material 33 is not required, and the outer layer material 33 has a soft appearance and feel because it is stretched to have unevenness. In addition, in the slit region 71 , by making the application width of the adhesive narrower than the width of the belt portion 39 , hems can be formed on the outer layer material 33 . In addition, reductions in elastomeric material can also be achieved.

In addition, by changing the width of the belt portion 39, the stretching force also changes, and it is possible to adjust to an appropriate fastening pressure corresponding to each site such as the waist, the upper iliac crest, and the waist. For example, by making the width of the waist and the top of the ilium wider than other parts, the stretching force can be increased to increase the fastening pressure.

In the underpants-type diaper 10 of the third embodiment, the elastic body 35 of the first embodiment may be sandwiched between the outer sheet 33 and the inner sheet 31 as necessary when the lamination area is weak in stretchability.

A fourth embodiment of the underpants-type diaper 10 will be described with reference to FIG. 8 . The pants-type diaper 10 (10D) of 4th Example uses the same material as the pants-type diaper 10A of said 1st Example in the pants-type diaper 10 of said 1st Embodiment. In the underpants-type diaper 10 (10D) of the fourth embodiment, the exterior body 11 is subjected to stretch processing. Specifically, in the underpants diaper 10 of the above-mentioned first embodiment, as shown in FIG. 33 and the inner layer material 31 are stretched in the girdle direction (X direction) (for example, groove processing). Thereby, the outer layer material 33 and the inner layer material 31 have extensibility. The elastic body 35 is fixed to the outer layer material 33 and the inner layer material 31 in a stretched state. As described above, the stretching method is not limited as long as it is a method for stretching the outer layer material 33 and the inner layer material 31 .

In addition, the bandwidth of the belt portion 39 is based on the above-mentioned first embodiment. In addition, in the cross section of the slit region 71 shown in FIG. 8(2), the portion indicated by the arrow of the outer layer material 33 is cut.

In the pants-type diaper 10 (10D) of the fourth embodiment, the same effects as those of the pants-type diaper 10A of the first embodiment described above can be obtained. In addition, the outer layer material 33 and the inner layer material 31 can be made stretchable by performing tooth groove processing as stretching processing. Thereby, stretchability can be expressed without hindering the stretchability of the elastic body 35, and the wearability of the underpants-type diaper 10D can be improved.

A fifth embodiment of the underpants-type diaper 10 will be described with reference to FIG. 9 . As shown in FIG. 9, the underpants diaper 10 (10E) of the fourth embodiment is the inner layer material 31 sandwiched between the elastic bodies 35 in the slit area 71 in the underpants diaper 10 of the above-mentioned first embodiment. A portion, that is, a region where the pleats 7 are formed has a structure in which holes 15 are formed. This structure can be applied to the underpants-type diaper 10 of all the structures demonstrated in this specification. The holes 15 are formed at predetermined intervals. For example, it has a diameter smaller than the arrangement interval of the elastic body 35 , and the hole interval is preferably, for example, 101% to 500% of the diameter of the hole 15 . More preferably, it is 200% or more and 300% or less of the diameter of the hole 15 . The hole 15 is formed by a heated needle, laser processing, or the like.

The underpants-type diaper 10 (10E) of 5th Example can also acquire the same effect as the underpants-type diaper 10 of said 1st Embodiment. In this example, since the holes 15 are formed in the inner layer material 31, the air permeability can be further improved.

Next, a second embodiment of the underpants-type diaper of the present invention will be described with reference to FIG. 10 .

As shown in FIG. 10 , a pants-type diaper 100 as an example of a pants-type diaper has an exterior body 11 also formed in a crotch portion 13 and an absorbent main body 40 is disposed inside (skin-contacting surface side). Specifically, the inner layer material 31 (second sheet material) and the outer layer material 33 (first sheet material) are provided on the entire surface of the abdominal part 21, the crotch part 13 and the back side part 23, and the crotch part becomes A shape indented inward in the width direction (X direction). As shown in the developed plan view of FIG. 11 , the ventral portion 21 and the back portion 23 of the outer layer material 33 have rows of slit regions arranged at intervals in the width direction. In addition, non-slit regions 72 for reinforcing strength are arranged between the slit regions 71 .

Thus, the configuration of the outer layer material 33 of the present invention can also be applied to the underpants-type diaper 100 having an exterior body continuously formed from the abdominal side through the crotch to the back side by the partial formation of the slit portion 38 . And the underpants type diaper 100 can apply the structure of the 1st - 5th Example of 1st Embodiment, and can acquire the same effect as these.

In this second embodiment, the outer layer material 33 is not limited to the entire surface of the abdomen portion 21 , the crotch portion 13 and the back portion 23 , and may be arranged only on the abdomen portion 21 and the back portion 23 . In addition, the first sheet having the slit region 71 may be the inner layer 31 and the second sheet may be the outer layer 33 . Furthermore, the crotch portion 13 on the back side may be only the outer layer material 33 , or may be composed of the outer layer material 33 and the inner layer material 31 .

In the various embodiments described above, the inner layer material 31 is folded back inwardly from the waist (refer to the folded part of the inner layer material 31 shown in FIG. long slices. In addition, by folding the inner layer material 31 inward, leakage of urine, absorbent polymer, and the like from the end of the absorbent body 40 can be further prevented. In addition, regarding the folding back, instead of folding back the inner layer material 31, the outer layer material 33 may be made longer and folded inward, or both the inner layer material 31 and the outer layer material 33 may be folded back, or may not be folded back. And the end of the absorbent body 40 is covered with another sheet.

Next, 1st Embodiment which is preferable 1st Embodiment (1st Embodiment) of the manufacturing method of the underpants type diaper of this invention is demonstrated below, referring FIG.12 and FIG.13. The first embodiment of the manufacturing method is one preferable method for manufacturing the above-mentioned underpants-type diaper 10 (10A). In addition, regarding the following other embodiments, the description described in detail about the first embodiment can be appropriately applied to points that are not particularly described.

In the manufacturing method of the underpants-type diaper 10, the continuous body 1S of the first sheet and the continuous body 2S of the second sheet, which form the outer body of the underpants-type wearing article, are respectively conveyed, including the following steps:

(a) A step of forming a slit region 71 in the continuous body 1S of the first sheet, and forming a plurality of slit regions 71 at intervals in the conveying direction, wherein the slit region 71 is in a direction perpendicular to the conveying direction It is formed by arranging a plurality of slits 38 formed along the conveying direction at intervals;

(b) Laminate the continuous body 1S of the first sheet and the continuous body 2S of the second sheet, and introduce the elastic body 35 in an extended state between the two continuous bodies avoiding the gap 38, and use the first sheet The step of forming the abdominal part 21 and the back part 23 of the exterior body 11 by sandwiching the elastic body 35 between the continuous body 1S of the sheet material and the continuous body 2S of the second sheet material and joining and fixing them;

(c) making the ventral part 21 and the back part 23 face and overlap, and respectively joining the two side edges of the ventral part 21 and the back part 23 to form the step of the side seal part 25; and

(d) A step of cutting and separating into individual underpants-shaped wearing articles at the side seal portion.

In detail, as shown in FIGS. 12 and 13 , for example, the continuous body 1S of the first sheet is fed from the upper side, and the continuous body 2S of the second sheet is fed from the lower side. The elastic body continuous member 3S used as the elastic body 35 is supplied between the body 1S and the continuous body 2S of the second sheet. The continuum 1S of the first sheet forms the outer layer 33 , and the continuum 2S of the second sheet forms the inner layer 31 . The continuum 1S of the first sheet (the continuation of the outer layer 33), the continuation 2S of the second sheet (the continuation of the inner layer 31) and the elastic continuous member 3S (the elastic 35) are respectively used with The above-mentioned pants-type diaper 10 is the same material.

First, the outer layer material slit cutter 211 is used to form the slit region 71 in the continuous body 1S of the first sheet material. The slit portion 38 is formed. Thus, a plurality of the belt portions 39 are formed in the slit region 71 . Further, a plurality of the slit regions 71 are formed at intervals in the conveying direction. At a position facing the slit cutter 211 , a receiving roll 212 is disposed across the continuous body 1S of the first sheet. The outer layer material slit cutter 211 has a roll shape and has a plurality of knives (not shown) along the circumferential direction of the cutter 211 in the axial direction of the cutter 211 . The continuous body 1S of the first sheet material in which the slit region 71 is formed is conveyed between the nip rollers 217 and 218 while being wound around the nip roller 217 . Alternatively, after cutting the continuous body 1S of the first sheet with a slit cutter to form the slit region 71 , it may be directly supplied between the nip rollers 217 and 218 without being wound around the nip roller 217 .

In addition, as shown in FIG. 12 and FIG. 13 , a plurality of elastic body continuous members 3S are prepared in parallel, and the adhesive supplied from the adhesive application device 215 is attached in each extended state (not shown). ) state, it is supplied between the nip rolls 217 and 218 together with the continuous body 2S of the second sheet. The respective elastic body continuous members 3S are supplied at predetermined intervals d1. At this time, it is preferable to supply such that the center of the elastic body continuous member 3S in the width direction is positioned at the center of the width of the belt portion 39 in the slit region 71 of the continuous body 1S of the first sheet. The adhesive application device 215 uses, for example, a hot melt gun, and a hot melt adhesive can be used as the adhesive in this case.

In this way, between the nip rollers 217 and 218 , the elastic body continuous member 3S in the stretched state at a predetermined interval d1 is supplied onto the second sheet continuous body 2S. At the same time, the continuous body 1S of the first sheet is supplied to each elastic continuous member 3S so that the elastic continuous member 3S is positioned at the center of the width of the belt portion 39 in the slit region 71 . Furthermore, the continuous body 1S of the first sheet may be supplied such that the elastic body continuous member 3S is shifted in one direction from the center of the belt portion 39 by a predetermined distance.

Then, the continuous body 2S of the second sheet, the continuous body of the elastic body 3S, and the continuous body 1S of the first sheet are passed between the nip rollers 217 and 218, and by the pressure between the rollers, the elastic body continuous body 3S is attached to the continuous body 1S of the elastic body. The hot-melt adhesive adheres the continuous body 2S of the second sheet and the continuous body 1S of the first sheet through the continuous elastic member 3S to obtain the continuous body 11S of the exterior body to be the exterior body 11 . In addition, it is preferable to supply the adhesive to any one of the non-slit region 72 of the continuum 1S of the first sheet and the continuum 2S of the second sheet corresponding to the region by using the adhesive applying device 215 . Or or both, to bond with the elastomeric continuous part 3S. Thereby, surface joining of the continuous body 1S of the 1st sheet material and the continuous body 2S of the 2nd sheet material can be performed, and the intensity|strength of the exterior body 11 can be improved, and it is preferable.

Next, the elastic body cutting process which does not express the elastic function of the elastic body continuous member 3S of the part of the exterior body continuous member 11S to which the absorptive main body 40 adheres is performed. The elastic body cutting step is performed before arranging the absorbent body 40 at predetermined positions of the abdominal part 21 and the back part 23 of the exterior body continuous member 11S. In this elastic body cutting step, for example, the non-functionalized region 11N can be formed on the exterior body continuous member 11S using a cutting roller 219 formed with a non-functionalized region forming portion (not shown) that does not reflect the contraction force of the elastic body continuous member 3S. . The non-functionalized region forming portion includes a plurality of protrusions or cutting blades that cut the elastic body continuous member 3S, or a plurality of embossing pins that harden the elastic body continuous member 3S by heat sealing, or the like.

The roller 220 facing the cutter roller 219 is a receiving roller, and its peripheral surface is a smooth surface.

Next, the exterior body continuous member 11S is cut at the center in the width direction using the exterior body slit cutter 221 to form the exterior body abdominal portion 21 and the exterior body back portion 23 . At a position facing the slit cutter 221, a receiving roller 222 is disposed across the exterior body continuous member 11S. Then, the distance between the abdominal part 21 and the back part 23 of the cut outer body is widened to a predetermined distance. As the widening means, for example, widening rollers 223 and 224 and widening rollers 225 and 226 arranged above and below each of the abdominal portion 21 and the backside portion 23 of the exterior body are preferably used. These widening rollers 223 to 226 separate the cut respective exterior body continuous members 11S at predetermined intervals. The above-mentioned widening mechanism is not limited to the above-mentioned widening rollers 223 to 226 , and any mechanism may be used as long as it widens the distance between the ventral portion 21 and the backside portion 23 of the exterior body.

Then, the abdomen side part 21 and the back side part 23 of the separated outer casing are guided so that they may become parallel to each other. As the mechanism for guiding in parallel, it is preferable to use parallel guide rollers (not shown). The parallelization guide rollers include, for example, rollers arranged above and below each of the abdominal part 21 and the back part 23 of the exterior body. The mechanism for guiding in parallel is not limited to the aforementioned guide rollers, and any mechanism may be used as long as the distance between the abdominal portion 21 and the back portion 23 of the exterior body is parallel.

The size and the like of the underpants-type diaper 10 including the predetermined interval are appropriately selected according to the size or the use. In addition, the said elastic body cutting process may be performed after cutting|disconnecting the exterior body continuous member 11S in the center part of the width direction, or simultaneously with cutting.

Next, the absorbent main body 40 obtained by cutting the absorbent main body continuum 40S supplied from the absorbent main body forming part 4 is arranged at predetermined positions of the abdominal part 21 and the back part 23 of the exterior body continuous member 11S. At this time, the absorptive main body 40 is bridged and arrange|positioned so that the longitudinal direction may become, for example, the direction at right angles to the abdominal part 21 and the back part 23 on the abdominal part 21 and the back part 23. The fixing of the absorptive main body 40 to 11 S of exterior body continuous members is performed in the state which maintained the extended state of 11 S of exterior body continuous members. For example, the absorptive main body 40 is fixed while maintaining the exterior body continuous member 11S from being shrunk by the contraction force of the elastic body continuous member 3S. Generally, an elastic member that contracts in the longitudinal direction is disposed on the absorbent main body 40 , but in this case, the absorbent main body 40 is fixed to the exterior body continuous member 11S without shrinking. At this time, the adhesive is preliminarily applied to the absorbent main body 40 or the exterior body continuous member 11S.

Next, the outer end portions in the width direction of the exterior body continuous member 11S are folded back so as to cover both ends in the longitudinal direction of the absorptive body 40 , and the absorptive body 40 is fixed by the folded portions. At this time, the adhesive is preliminarily applied to predetermined positions such as the inner surface side of the folded portion and the absorbent main body 40 . The folded portion of the exterior body continuous member 11S (the folded portion of the inner layer material 31 shown in FIG. 2 above) is formed by the continuous body 2S of the second sheet, so the continuous body 2S of the second sheet is used in a width wider than that of the first sheet. A continuum of 1s wide sheets.

Next, the absorbent main body 40 is folded in half in the longitudinal direction, and the abdomen side part 21 of the exterior body continuous member 11S and the back side part 23 of the exterior body continuous part 11S are overlapped so that the second sheet continuous body 2S faces inward. . Next, a side sealing step of forming the side sealing part 25 by joining the abdominal part 21 and the back part 23 at a predetermined interval is performed. Joining is performed in the width direction (direction orthogonal to a conveyance direction) of the exterior body continuous member 11S. The predetermined interval in this side sealing step determines the length of the width direction of the underpants-type diaper 10 . In this way, the underpants-type diaper continuum 10S is obtained.

Next, the said underpants-type diaper continuum 10S which laminated|stacked the abdominal part 21 and the back side part 23 of an exterior body is cut|disconnected in the width direction, and it separates into each underpants-type diaper 10 (10A). As a result, the underpants-type diaper 10 (10A) is completed, and the structure demonstrated in the 1st Example of the above-mentioned underpants-type diaper can be obtained. Cutting of the underpants-type diaper continuum 10S is performed at the junction part obtained by performing side sealing. Concretely, in the junction part of one place, two side seal parts are formed in the width direction of 11 S of exterior body continuous members, and cutting is performed between two side seal parts.

In the first embodiment of the above-mentioned manufacturing method, the continuous body 1S of the first sheet is not completely separated into thin strips, but by forming the local slit region 71, the continuous body 1S of the first sheet is transported Position alignment becomes easy. In particular, the alignment between the elastic body continuous member 3S and the belt portion 39 becomes easy. In addition, the continuous body 1S itself of the first sheet is less likely to be broken during conveyance. Furthermore, the elastic body continuous member 3S is securely bonded and fixed by the surface bonding of the non-slit region 72, and can prevent falling off from the sheet. In particular, in the above-mentioned elastic body cutting step, even if the elastic body continuous member 3S tends to shrink due to the reaction of cutting, this can be prevented by the non-slit region 72 to prevent falling off. In addition, since there is surface bonding in the non-slit region 72 , the amount of adhesive applied to the elastic body continuous member 3S can be suppressed, and the adhesive can be prevented from seeping out from the slit portion 38 . Thereby, a high-quality diaper can be manufactured with high precision.

In addition, without using the exterior body slit cutter 221 , the exterior body continuous member 11S for the abdominal part and the exterior body continuous member 11S for the back part may be separately manufactured in parallel. In addition, in Fig. 12, the continuous body 1S of the first sheet is set as the outer layer material 33, and the continuous body 2S of the second sheet is set as the inner layer material 31, and the manufacturing steps of the diaper 10 are shown, but Not limited thereto, the continuous body 1S of the first sheet may be used as the inner layer material 31 , and the continuous body 2S of the second sheet may be used as the outer layer material 33 . The replacement of these components is also the same in the following manufacturing methods.

According to the manufacturing method of the underpants-type wearing article of the present invention, it is possible to maintain the same stretchability as that of the conventional underpants-type diaper to maintain the wearability of the body and the mobility of the body, and the incision of the slit portion 38 can be used to improve air permeability. sex. Moreover, the amount of pleats increases by the action of the slit part 38, and the waist area becomes soft, and it becomes a diaper rich in flexibility. Moreover, it is possible to stably manufacture a shorts-type wearing article that has the strength to withstand various forces due to the synergistic effect of the slit region 71 and the non-slit region 72 of the outer layer material 33, and has air permeability. , Stretchability, and softness are sustained, so that the wearing feeling is excellent, and the concealment of the skin is improved.

Thereby, the underpants-type diaper 10 (10A) excellent in wearing comfort which reduces stuffiness for a long period of time can be provided.

Next, a second embodiment of the manufacturing method of the present invention will be described below with reference to FIG. 14 . 2nd Embodiment is one method of manufacturing the above-mentioned underpants-type diaper 10 (10B).

As shown in FIG. 14, in the manufacturing method of the second embodiment, in the manufacturing method of the above-mentioned first embodiment, a sealing roller 231 is arranged between the nip rollers 217, 218, the cutting roller 219, and the receiving roller 220, and The sealing step by the sealing roller 231 is performed in a state where the first sheet continuous body 1S, the elastic body continuous member 3S, and the second sheet continuous body 2S are overlapped. At a position facing the sealing roller 231, the receiving roller 232 is arrange|positioned on both sides of the exterior body continuous member 11S. Using the sealing roller 231, the sealing portion 37 (not shown in FIG. 14 , referring to the above-mentioned FIG. 6 ( 3)), and the belt portion 39 is fixed to the continuous body 2S of the second sheet. It is preferable to form the sealing portion 37 using embossed bonding. By performing embossed bonding, the texture of the sheet material can be maintained without being impaired by hardening of the adhesive or the like, and a good touch can be maintained.

The elastic body continuous member 3S is located between the belt portion 39 and the continuous body 2S of the second sheet and between the sealing portions 37, 37 (not shown in FIG. 14 , refer to the above-mentioned FIG. 6 (3)), and the above In the step before emboss joining, it is intermittently fixed to the belt part 39 and the continuous body 2S of the 2nd sheet|seat with an adhesive agent. Therefore, most of the elastic body continuous member 3S is free with respect to the belt portion 39 and the second sheet continuous body 2S. Thereby, the air permeability and stretchability in the diaper longitudinal direction (Y direction) of the outer-sheet material 33 formed from the continuous body 1S of the 1st sheet|seat can be improved.

The above-mentioned adhesive is preferably applied to the continuous body 2S of the second sheet and the continuous body 1S of the first sheet. In the drawing, the case where it is applied to both the continuous body 2S of the second sheet and the continuous body 1S of the first sheet is shown, but the continuous part 3S of the elastic body is thinner and the adhesive will surround the elastic body In the case of the periphery of the continuous member 3S, it can apply to either. In addition, the above-mentioned adhesive can also be applied to the elastic body continuous member 3S. In this case, the application position to the elastic body continuous member 3S is preferably performed immediately before the continuous body 2S of the second sheet and the continuous body 1S of the first sheet merge.

Furthermore, in the above-mentioned sealing step, the stretched elastic continuous member 3S is placed in the middle, and the belt portion 39 of the continuous body 1S of the first sheet and the continuous body 2S of the second sheet form two layers. The non-woven fabric portion of the nonwoven fabric regularly forms the sealing portion 37 (refer to the above-mentioned FIG. 6 (3)), thereby forming pleats (not shown) by the belt portion 39 when the elastic body continuous member 3S (elastic body 35 ) shrinks. That is, the intermittently fixed middle belt portion 39 swells outward (non-skin contact surface side) due to contraction of the elastic body constituted by the elastic body continuous member 3S. Thus, the above-mentioned pleats are formed.

In this way, the exterior body continuous member 11S forming the exterior body 11 is obtained.

Next, the steps after the elastic body cutting step using the cutter roll 219 described in the first embodiment are sequentially performed to complete the underpants-type diaper 10 (10B) (for example, refer to the above-mentioned FIG. 6 ). In addition, in this embodiment, in the elastic body cutting step, the elastic body 35 is cut at one location in the center of the region where the absorber is disposed. Alternatively, the step of cutting the elastic body is not essential and may be omitted.

In the second embodiment of the manufacturing method of the present invention, the same effect as that of the above-mentioned first embodiment can be obtained, and the air permeability of the region where the belt portion 39 is formed can be improved. In addition, it is possible to form pleats in the width direction of the outer layer material 33 while fixing the belt portion 39 . Thereby, a decorative appearance can be imparted.

In addition, in the fixing of the elastic body continuous member to the continuous body 1S of the first sheet or the continuous body 2S of the second sheet, and the fixing of the continuous body 1S of the first sheet to the continuous body 2S of the second sheet, Compared with the first embodiment, there is no need for a large amount of adhesive, and the environmental load can be reduced, and the cost can also be reduced.

Next, a third embodiment of the manufacturing method of the present invention will be described below with reference to FIG. 15 . 3rd Embodiment is one method of manufacturing the above-mentioned underpants-type diaper 10 (10C).

As shown in FIG. 15 , the continuous body 1S of the first sheet is fed from the upper side, and the continuous body 2S of the second sheet is fed from the lower side. The continuum 1S of the first sheet is a member that forms the outer layer 33 and itself has stretchability in the longitudinal direction (waistline direction). As an example, there is a member having a fiber layer on the surface of an elastic sheet. Therefore, unlike the first embodiment described above, the elastic body 35 is not used. The continuous body 2S of the second sheet is a member forming the inner layer material 31 .

First, the entire area of the surface of the continuous body 1S of the first sheet is subjected to tooth groove processing as stretching processing by the concave-convex roller 241 . As a result, grooves 34 are formed in the width direction of the continuous body 1S of the first sheet (not shown in FIG. 15 , refer to the aforementioned FIG. 7( 3 )). This spline processing imparts extensibility to the fiber layer in the longitudinal direction of the continuous body 1S of the first sheet without interfering with the stretchability of the stretchable sheet, thereby expressing stretchability to the continuous body 1S of the first sheet. The interval of this groove 34 also depends on the thickness of the nonwoven fabric of the continuous body 1S of the 1st sheet|seat, For example, it is set to the interval according to 10 C of underpants type diapers mentioned above. Moreover, the uneven|corrugated roller 242 which meshes with this roller 241 is arrange|positioned at the position which opposes the uneven|corrugated roller 241. As shown in FIG.

Next, the slit region 71 is formed in the continuous body 1S of the first sheet material subjected to the above-mentioned gullet processing by using the outer layer material slit cutter 211 described in the above-mentioned first embodiment. Then, the continuous body 1S of the first sheet is maintained in the divided state, and is conveyed between nip rollers 217 and 218 . In addition, after the continuous body 1S of the 1st sheet material is divided into several by the outer-layer material slit cutter 211, you may implement the said gullet processing.

On the other hand, the continuous body 2S of the second sheet is supplied with an adhesive (not shown) supplied from the adhesive application device 215 . In addition, in the portion corresponding to the slit region 71 of the continuum 1S of the first sheet, the adhesive is preferably supplied to the approximate center of the position where the respective belt portions 39 are bonded in the next step, and the supply method may be continuous. can also be intermittent.

In this manner, the continuous body 1S of the first sheet is supplied onto the continuous body 2S of the second sheet at a predetermined interval between the nip rollers 217 and 218 . Then, the above-mentioned continuous body 2S of the second sheet and the continuous body 1S of the first sheet pass between the nip rollers 217 and 218, thereby utilizing the pressure between the rollers to pass through the continuous body 2S of the second sheet. The adhesive agent bonds the continuum 2S of the second sheet to the continuum 1S of the first sheet.

As a result, the exterior body continuous member 11S forming the exterior body 11 is obtained.

Next, the steps subsequent to the step of cutting the outer body using the outer body slit cutter 221 described in the first embodiment of the manufacturing method of the present invention are sequentially performed to complete the underpants-type diaper 10 (10C) (for example, refer to the aforementioned Figure 7).

In the third embodiment of the production method of the present invention, the same effects as those of the above-mentioned first embodiment can be obtained. Furthermore, since the continuous body 1S of the first sheet material itself has stretchability, it is not necessary to arrange an elastic body between the continuous body 1S of the first sheet material and the continuous body 2S of the second sheet material, so that the flexibility of the material can be realized accordingly. Reduction, reduction of material cost.

Next, a fourth embodiment of the manufacturing method of the present invention will be described below with reference to FIG. 16 . 4th Embodiment is one method of manufacturing the above-mentioned underpants-type diaper 10 (10D).

In this fourth embodiment, in the above-mentioned first embodiment, the continuous body 2S of the second sheet forming the inner layer material 31 and the continuous body 2S of the first sheet forming the outer layer material 33 are separated by nip rolls 217 and 218 . Between the step of adhering the body 1S through the elastic body continuous member 3S and the step of cutting the elastic body by the cutter roller 219 , a cogging step is performed as a stretching step. It is the same as the above-mentioned first embodiment except that the cogging step is performed. The cogging step here is to make the fiber layer have elongation by pressing the teeth of the concave-convex roller 241 against the outer layer material 33 and the inner layer material 31 without hindering, for example, the extensibility of the elongated sheet constituting the outer layer material 33 . Sexual steps. As a result, for example, grooves 34 are formed at intervals in the continuous body 1S of the first sheet (not shown in FIG. 16 , refer to the aforementioned FIG. 8 ). It is preferable that the interval of this groove|channel 34 is the same interval as the groove|channel of 10 C of underpants type diapers mentioned above, for example. Furthermore, a concave-convex roller 242 that meshes with the roller 241 is arranged at a position facing the concave-convex roller 241 .

First, as in the above-mentioned first embodiment, the continuous body 1S of the first sheet and the continuous body 2S of the second sheet in which the slit region 71 is formed by the slit cutter 211 are bonded via the elastic continuous member 3S. . As an example, the continuous body 1S of the first sheet is a non-woven fabric without stretchability. Then, the continuous body 1S of the first sheet and the continuous body 2S of the second sheet bonded via the elastic body continuous member 3S are subjected to gullet processing as stretching by the concave-convex roller 241 . Thereby, the continuous body 1S of the 1st sheet material and the continuous body 2S of the 2nd sheet material express stretchability in the longitudinal direction so that the stretchability of the elastic body continuous member 3S (elastic body 35) may not be hindered. In addition, the stretchability of the elastic body continuous member 3S is not affected by tooth groove processing. As a result of performing this groove processing, irregularities (concaves are grooves 34 ) are formed in the width direction of the surface of the continuous body 1S of the first sheet. Although the interval of this groove 34 also depends on the thickness of the nonwoven fabric of the continuous body 1S of the 1st sheet|seat, it is made into the interval according to 10 C of underpants type diapers mentioned above, for example. In addition, the above-mentioned drawing processing is not limited to slotting as long as it is a method that can extend the continuous body 1S of the first sheet and the continuous body 2S of the second sheet.

In the above-mentioned fourth embodiment, the same effect as that of the above-mentioned first embodiment can be obtained. Furthermore, since the outer layer material 33 and the inner layer material 31 express extensibility, the outer body 11 (refer FIG. 8 mentioned above) of a pants type diaper can be provided with stretchability in the waist direction. Furthermore, forming the grooves 34 in the outer layer material 33 facilitates the formation of pleats.

Next, a fifth embodiment of the manufacturing method will be described below with reference to FIG. 17 . 5th Embodiment is another manufacturing method which manufactures the said underpants type diaper 10 (10A).

As shown in FIG. 17, in the fifth embodiment, the continuous body 1S of the first sheet is divided into the continuous body 1SA of the first sheet forming the abdominal part 21 of the exterior body 11 and the continuous body 1SA forming the back part 23. The state of the continuous body 1SB of the first sheet is supplied to the continuous body 1S of the first sheet. Similarly, the second sheet is supplied in a state where the continuum 2S of the second sheet is divided into the continuum 2SA of the second sheet forming the abdominal part 21 and the continuum 2SB of the second sheet forming the back part 23 . Continuum of sheets 2S. That is, continuous bodies 1SA and 1SB of the first sheet and continuous bodies 2SA and 2SB of the second sheet corresponding to the widths of the abdominal part and the back part are used. Then, the slit regions 71 are formed in the continuous bodies 1SA and 1SB of the first sheet material by the outer layer material slit cutters 211A and 211B, respectively. Then, the continuous bodies 1SA and 1SB of the first sheet having the slit region 71 are respectively wound around the nip roll 217 and conveyed between the nip rolls 217 and 218 in this state.

Subsequent steps are the same as those in the first embodiment described above, except that the step of cutting the exterior body continuous member 11S using the exterior body slit cutter is not performed.

Or as shown in FIG. 18 , the continuum 1S of the above-mentioned first sheet can also be divided into continuous bodies 1SA and 1SB of the first sheet by using a slit cutter 216A, and the continuous body 1S of the above-mentioned second sheet can be divided by a slit cutter 216B. The body 2S is divided into continuous bodies 2SA, 2SB of the second sheet. In this case, after cutting, the interval between the first sheet continuum 1SA and the first sheet continuum 1SB is enlarged to a predetermined interval by a widening mechanism (not shown), and another widening mechanism is used. (not shown), the interval between the second sheet continuum 2SA and the second sheet continuum 2SB is enlarged to the above-mentioned predetermined interval. A widening roller can be used as each widening mechanism mentioned above. In addition, although not shown, it is preferable to arrange a mechanism for parallelizing the conveyance direction of the widened sheet. Parallel guide rollers are exemplified as means for parallelizing the conveyance direction of the sheet.

Then, as described above, the continuum 1SA, 1SB of the first sheet having the slit region 71 is obtained using the outer layer slit cutters 211A, 211B. Next, between the nip rollers 217 and 218, the continuous body 1S of the first sheet material and the continuous body 1S of the second sheet material are conveyed in such a manner that the elastic continuous body 3S is sandwiched between the continuous body 1S of the first sheet material and the continuous body 2S of the second sheet material. Continuum 2S of the second sheet. Thereafter, the same steps as in the first embodiment are performed. In this manner, the exterior body 11 composed of the first sheet continuum 1S and the second sheet continuum 2S sandwiching the elastic continuous member 3S is divided into the abdominal part 21 and the back part 23 , and is manufactured. Therefore, as in the first embodiment described above, the step of dividing the exterior body 11 is not performed.

In the above-mentioned fifth embodiment, the same effect as that of the above-mentioned first embodiment can be obtained. In addition, the continuous body 1S of the first sheet is not cut in advance, but the continuous body 1SA, 1SB of the first sheet with a predetermined width is supplied from the beginning, and the continuous body 2S of the second sheet is similarly not cut, and the continuous body 2S is supplied from the beginning. When the continuous bodies 2SA and 2SB of the second sheet having a predetermined width are supplied, it is not necessary to provide an exterior body slit cutter. Therefore, manufacturing equipment can be reduced, and manufacturing cost can be reduced.

Like the fifth embodiment of the above-mentioned manufacturing method, the method of supplying in a state divided into the first sheet continuous body 1SA and the first sheet continuous body 1SB can be applied to the second to fourth embodiments described above. In either case, the subsequent steps are the same as those of the above-mentioned second to fourth embodiments, except that the cutting step of the exterior body continuous member 11S using the exterior body slit cutter is not performed.

Next, a preferred embodiment (second embodiment) of the manufacturing method of the underpants-type diaper of the present invention will be described below with reference to FIG. 19 . 2nd Embodiment is an example which applied the manufacturing method of this invention to the manufacturing method of the conventional underpants-type diaper which has a leg hole, and is a method of manufacturing the above-mentioned underpants-type diaper 100.

As shown in FIG. 19, the continuous body 1S of the first sheet is fed from the upper side, and the continuous body 2S of the second sheet is fed from the lower side, and the continuous body 1S of the first sheet and the continuous body 1S of the second sheet are fed simultaneously. The elastic body continuous member 3S forming the elastic body 35 is supplied between the continuous bodies 2S. The continuum 1S of the first sheet forms the outer layer material 33 over the abdominal part, the crotch part, and the back side. Likewise, the continuum 2S of the second sheet forms the inner layer material 31 over the abdominal part, the crotch part, and the back part. These first sheet continuous body 1S (outer layer material 33), second sheet continuous body 2S (inner layer material 31) and elastic body continuous member 3S (elastic body 35) are respectively used in the above-mentioned pants type diaper. The same material as that described in the first embodiment.

First, the outer layer slit cutter 211 forms slit regions 71 at intervals along the conveyance direction at portions serving as the ventral portion and the back portion on both sides of the continuous body 1S of the first sheet material. At a position facing the slit cutter 211, a receiving roller 212 is arranged to sandwich the first sheet 1S. Next, the continuous body 1S of the first sheet is conveyed between nip rollers 217 and 218 .

Moreover, a plurality of elastic body continuous members 3S are prepared in parallel, and each elastic body continuous member 3S is in an extended state, and is supplied between the second sheet continuous body 2S and the first sheet continuous body 1S. At this time, it is preferable to supply the continuous body 1S of the first sheet and the elastic body continuous member 3S such that the center of the width direction of the elastic body continuous member 3S coincides with the center of the width of the belt portion 39 of the slit region 71 . At this time, the continuous body 2S of the second sheet and the continuous body 1S of the first sheet are bonded by an adhesive coating device (not shown) by the same method as that described in the above-mentioned first embodiment. Apply adhesive (not shown). The above-mentioned adhesive application device (not shown) uses, for example, a hot-melt gun, and the adhesive in this case uses a hot-melt adhesive.

In this manner, the continuous body 2S of the second sheet, the continuous elastic member 3S, and the continuous body 1S of the first sheet are passed between the nip rollers 217 and 218 . Then, using the pressure between the rollers, the continuous body 2S of the second sheet is bonded to the continuous body 1S of the first sheet through the continuous elastic member 3S by using the above-mentioned applied hot-melt adhesive to obtain the outer package. The exterior body continuous member 11S of the body 11 .

Thereafter, the elastic body continuous member 3S is conveyed between the cutter roll 219 and the take-up roll 220 . Then, the elastic body cutting process which does not express the elasticity of the elastic body continuous member 3S located in the area|region where the absorptive main body 40 is provided is performed by the cutter roll 219 in a subsequent step. This cutting method is the same as that described in the above-mentioned first embodiment.

Next, the absorbent body 40 obtained by cutting the absorbent body continuum 40S supplied from the absorbent body forming part 4 is arranged on the abdominal part 21 and the back side of the outer body continuous member 11S in the same manner as in the above-mentioned first embodiment. section 23 in the specified position. Next, the both ends of the width direction of the exterior body continuous member 11S are folded back so that both ends of the longitudinal direction of the absorptive main body 40 may be covered, and the absorptive main body 40 is fixed by this folded-back part.

Next, the leg hole 110 is formed in both side parts of the absorptive main body 40 fixed to 11 S of exterior body continuous members.

Next, the absorbent main body 40 is folded in half in the longitudinal direction, and the abdomen side portion 21 of the exterior body continuous member 11S is overlapped with the back side portion 23 of the exterior body continuous member 11S so that the second sheet continuous body 2S faces inwardly. The steps after the side sealing step of joining the abdominal part 21 and the back part 23 at predetermined intervals in the width direction are performed to complete the underpants-type diaper 100 .

In the manufacturing method of the above-mentioned second embodiment, similarly to the above-mentioned first embodiment, it is possible to stably manufacture a shorts-type wearing article by synergy between the slit region 71 and the non-slit region 72 of the outer layer material 33 . It has the strength to withstand various forces, and the air permeability, stretchability, and softness continue, so that the wearing feeling is excellent, and the concealment of the skin is improved. In particular, in the manufacturing method of the second embodiment, the adjustment of the formation position of the slit region 71 of the continuous body 1S of the first sheet can be based, for example, on the setting of the formation position of the leg holes 1 or the leg gathers in the prior art. Adjustment is performed with high precision by setting the fixing positions of the elastic body on the ventral portion and the dorsal portion, and the like.

Thereby, it is possible to provide the underpants-type diaper 10 (10A) which reduces stuffiness due to the improved air permeability and is excellent in skin concealment properties.

As described above, according to the underpants-type wearing article of the present invention, it is possible to maintain the same stretchability as that of the conventional underpants-type diaper to maintain the wearability on the body and the mobility of the body, and the incision of the slit portion 38 can be utilized. Improves breathability. In addition, the amount of pleats is increased by the action of the slit portion 38, and the waist area is soft and becomes a portion rich in flexibility. Furthermore, the diaper 10 has strength capable of withstanding various forces due to the synergistic effect of the slit region 71 and the non-slit region 72 of the outer sheet 33 , and has excellent wearing comfort due to continuous air permeability, stretchability, and softness. Therefore, even if the diaper is worn for a long time, stuffiness can be reduced. In addition, since the exterior body 11 has a two-layer structure of the inner layer material 31 and the outer layer material 33, and the belt portions 39 are adjacent to each other, it is difficult to see through the skin, and the concealment of the skin can be improved.

In addition, according to the method of manufacturing the underpants-type wearing article of the present invention, the above-mentioned underpants-type wearing article having strength capable of withstanding various forces, breathability, stretchability, etc. , The softness lasts and the wearing feeling is excellent, and it is difficult to see through the skin to improve the concealment of the skin.

In each of the above-mentioned embodiments, the underpants-type wearing article of the present invention was shown by taking the underpants-type diaper as an example, but an underpants-type diaper pad used by arranging the absorbent main body on the skin side is also preferable. Here, the absorbent main body is not particularly limited as long as it absorbs excreted urine and the like, and examples thereof include absorbent pads such as urine-absorbent pads. Absorbent pads include, for example, a liquid-permeable top sheet, a liquid-impermeable leak-proof sheet, and a liquid-retaining absorbent body disposed between these two sheets, and are formed in a vertically elongated shape such as a rectangle when viewed from above. part. Moreover, it is preferable to form a pair of left and right three-dimensional guards on both sides of the longitudinal direction of the absorbent pad, and each three-dimensional guard is preferably provided with three-dimensional guards with three-dimensional guard elastic members on both sides of the longitudinal direction of the absorbent pad. Sheet. The longitudinal direction of such an absorbent pad extends from the wearer's back side through the crotch to the abdomen side, and the liquid-permeable sheet side of the absorbent pad is arranged so as to be in contact with the wearer's skin. The diaper liner is preferably worn so as to cover the absorbent pad.

In addition, the underpants-type wearing article of the present invention is a concept including all absorbent articles having an underpants-shaped structure, such as sanitary underpants and underpants-type sanitary napkins, in addition to the above-mentioned underpants-type diapers. The shorts-type wearing article may be an article for infants or an article for adults. In addition, it may be disposable underwear without an absorbent main body.

Regarding the above-mentioned embodiment and embodiment, the following additional notes (underpants-type wearing article and manufacturing method of underpants-type wearing article) are further disclosed.

<1> A shorts-type wearing article comprising a ventral portion disposed on the ventral side of a wearer, a crotch portion disposed on the crotch portion, and a dorsal portion disposed on the back side, and including a side of the ventral portion The side seal part formed by joining the edge part and the side edge part of the back side part,

An exterior body formed by laminating a first sheet and a second sheet is disposed on the abdominal portion and the back portion, and the exterior body is stretchable in the width direction,

The first sheet has a slit area in which a plurality of slits are arranged in the longitudinal direction, and the first sheet has a line of the slit areas arranged at intervals in the width direction of the first sheet.

<2> The underpants-type wearing article according to the above <1>, wherein in the abdominal portion and the back portion, there is a gap between the first sheet and the second sheet in the width direction while avoiding the slit. An elastic body is disposed, or both or either of the first sheet and the second sheet are formed of stretchable materials.

<3> The underpants-type wearing article according to the above <2>, wherein in the abdominal portion and the back portion, there is a gap between the first sheet and the second sheet in the width direction while avoiding the slit. An elastic body is disposed, and an end portion of the elastic body is sandwiched by the first sheet and the second sheet to be joined and fixed in a non-slit region parallel to the slit region in the width direction.

<4> The shorts-type wearing article according to the above <2> or <3>, wherein the portion sandwiched between the slits adjacent in the lengthwise direction in the slit region of the first sheet is horizontally long. The belt part has a plurality of sealing parts arranged at the part where the belt part overlaps with the above-mentioned second sheet, and between the above-mentioned sealing parts adjacent in the width direction of the pants-type wearing article, between the above-mentioned belt part and the above-mentioned Pleats are formed on each of the second sheets.

<5> The shorts-type wearing article according to any one of the above <2> to <4>, wherein both or either of the first sheet and the second sheet are stretched.

<6> The shorts-type wearing article according to any one of the above <2> to <5>, wherein the first sheet itself has stretchability in the waist direction, and the first sheet is attached to the first sheet in a stretched state. on two sheets.

<7> The underpants-type wearing article according to the above <6>, wherein the elastic body is sandwiched between the first sheet and the second sheet.

<8> The shorts-type wearing article according to any one of the above-mentioned <2> to <7>, wherein the first sheet and the second sheet fixed via an elastic body are stretched in the waist direction, and the above-mentioned The elastic body is fixed to the first sheet and the second sheet in an extended state.

<9> The underpants-type wearing article according to any one of the above <1> to <8>, wherein the belt part of the first sheet is fixed to the second sheet in a part of its width, and the belt part of the first sheet is fixed to the second sheet at the free end. Hems are formed on side edge portions of the belt portion.

<10> The underpants-type wearing article according to the above <9>, wherein the belt portion of the first sheet is fixed to the second sheet at a central portion in the width direction thereof.

<11> The underpants-type wearing article according to any one of the above <1> to <10>, wherein the outer body is subjected to stretch processing.

<12> The shorts-type wearing article according to any one of the above <1> to <11>, wherein the slit region avoids the central region in the width direction of the abdomen portion and the back portion and the side seal portion. near the way configuration.

<13> The underpants-type wearing article according to any one of the above-mentioned <1> to <12>, wherein the above-mentioned underpants-type wearing article is a underpants-type diaper, and the underpants-type wearing article is stretched from the crotch to The liquid retentive absorbent main body is arranged so as to form the abdominal part and the back part, and the slit region of the first sheet is arranged so as to avoid the vicinity of the arrangement region of the absorbent main body and the vicinity of the side seal part.

<14> The underpants-type wearing article according to any one of the above <1> to <13>, wherein in the first sheet, the portion sandwiched between the adjacent slits in the longitudinal direction is The horizontally long belt portion has a non-fixed portion not fixed to the second sheet at a side edge portion of the belt portion, and a hem is formed on the non-fixed portion.

<15> The underpants-type wearing article according to any one of the above <1> to <14>, wherein the first sheet is an outer layer constituting the exterior body, and the second sheet is an outer layer constituting the exterior body. In the inner layer, the first sheet is arranged on the non-skin-contacting side of the second sheet.

<16> The shorts-type wearing article according to any one of the above <1> to <14>, wherein the first sheet is an inner layer material constituting the exterior body, and the second sheet is an outer layer constituting the exterior body. In the layer material, the first sheet is disposed on the skin-contacting side of the second sheet.

<17> The underpants-type wearing article according to any one of the above <1> to <16>, wherein the width of the belt portion located between the slit portions of the first sheet is 1 mm or more, preferably 3 mm or more, more preferably 5mm or more.

<18> The underpants-type wearing article according to any one of the above <1> to <17>, wherein the width of the belt portion located between the slit portions of the first sheet is 60 mm or less, preferably 40 mm or less, more preferably 30mm or less.

<19> The shorts-type wearing article according to any one of the above <1> to <18>, wherein the width of the belt portion located between the slit portions of the first sheet is 1 mm to 60 mm, preferably 3 mm to 40 mm, More preferably, it is 5 mm to 30 mm.

<20> The shorts-type wearing article according to any one of the above <1> to <19>, wherein the second sheet is an inner layer constituting the outer body, and the belt portion of the outer layer is within a width of the belt. The central part is fixed to the inner layer material.

<21> The underpants-type wearing article according to any one of the above <1> to <20>, wherein the exterior body is also arranged in the crotch portion.

<22> The underpants-type wearing article according to any one of the above <1> to <21>, wherein the absorbent main body is disposed on the skin-contacting surface side of the exterior body.

<23> A method of manufacturing a shorts-type wearing article including a ventral portion disposed on the abdominal side of a wearer, a crotch portion disposed on the crotch portion, and a back portion disposed on the back side , the manufacturing method of the shorts-type wearing article is characterized in that:

The continuous body of the first sheet and the continuous body of the second sheet that form the outer body of the shorts-type wearing article are conveyed separately, and includes the following steps:

A step of forming a slit region in the continuous body of the first sheet and forming a plurality of the slit regions at intervals in the conveying direction, wherein the slit regions are arranged at intervals in a direction perpendicular to the conveying direction. Formed by a slit formed along the conveying direction;

A step of laminating the continuum of the first sheet and the continuum of the second sheet to form the ventral portion and the dorsal portion of the exterior body;

making the above-mentioned ventral portion and the above-mentioned dorsal portion face and overlap each other, and joining the two side edges of the ventral portion and the dorsal portion respectively to form a side seal; and

A step of cutting and separating into individual underpants-type wearing articles is performed in the side seal portion.

<24> The method for manufacturing the shorts-type wearing article according to <23>, wherein the step of forming the ventral portion and the back portion of the exterior body includes the step of forming the continuous body of the first sheet and the second sheet. Between the continuous sheets, an elastic body is introduced in a stretched state avoiding the slit, and the elastic body is clamped and fixed by the continuous body of the first sheet and the continuous body of the second sheet.

<25> The method for producing a shorts-type wearing article according to <24>, wherein in the step of forming the ventral portion and the back portion of the exterior body, the elastic body is coated with a hot-melt adhesive. For introduction, the elastic body is sandwiched between the continuous body of the first sheet and the continuous body of the second sheet, and joined and fixed.

<26> The method of manufacturing the shorts-type wearing article according to <24> or <25>, wherein in the step of forming the ventral portion and the back portion of the exterior body, the slit area aligned with the slit area in the conveying direction is In the non-slit region, a hot-melt adhesive is applied to at least one of the continuous body of the first sheet and the continuous body of the second sheet to bond and fix the elastic body.

<27> The method for producing a shorts-type wearing article according to any one of <24> to <26>, wherein in the step of forming the ventral portion and the back portion of the exterior body, the first sheet is Embossing the side edge of the belt portion in the slit region of the continuum of the first sheet and the second sheet with the elastic body interposed between the continuum and the continuum of the second sheet join.

<28> The method for producing a shorts-type wearing article according to any one of <23> to <27>, wherein in the step of forming the side seal portion, the second sheets are made to face each other inside and the abdomen side overlapping with the above-mentioned dorsal part.

<29> The method of manufacturing shorts-type wearing articles according to the above-mentioned <24> to <28>, wherein a plurality of elastic body continuous members are prepared, and are supplied from an adhesive coating device in each stretched state and adhered thereto. The above-mentioned elastic body is supplied in the state of an adhesive.

<30> The method for producing a shorts-type wearing article according to any one of the above <23> to <29>, wherein the continuous body of the first sheet of the abdominal part and the first sheet of the back part The continuum of sheets is supplied to one continuum of the above-mentioned second sheet in a state where they are separated in the width direction.

<31> The method for producing a shorts-type wearing article according to any one of <23> to <30> above, wherein before laminating the continuous body of the first sheet and the continuous body of the second sheet, the Either or both of the continuous body of the first sheet material and the continuous body of the second sheet material are subjected to drawing processing, or the continuous body of the above-mentioned first sheet material and the continuous body of the second sheet material are Stretching is performed after lamination.

<32> The method of manufacturing the underpants-type wearing article according to any one of the above-mentioned <23> to <31>, wherein the underpants-type wearing article has an absorbent main body, and the absorbent main body is arranged at a predetermined position of the outer casing. .

<33> The method of manufacturing the underpants-type wearing article according to the above <32>, which includes an elastic body cutting step of disposing the absorbent main body at a predetermined position of the outer casing so that the elastic body is cut. The step of arranging that the portion of the absorbent body does not exhibit the elastic function of the elastomer.

The present invention and its embodiments have been described together, but it is considered that as long as the inventor does not specify otherwise, and any details of the description limit the present invention, it should be within the spirit and scope of the invention shown in the attached scope of application. interpreted broadly.

This application claims priority based on Japanese Patent Application No. 2013-101715 filed for a patent application in Japan on May 13, 2013, the content of which is hereby incorporated by reference as a part of description of this specification.

Claims (23)

1. a pants-type wearing garments, it comprise the veutro being configured in wearer veutro portion, be configured in the crotch of crotch part and be configured in the drosal part of dorsal part, and the side seal portion that the side edge part of the side edge part and drosal part that comprise veutro portion engages, the feature of described pants-type wearing garments is:

Be configured with the exterior body the first sheet material and the second sheet material are laminated in described veutro portion and described drosal part, this exterior body has retractility at width,

There is at described first sheet material the gap zone being configured with multiple slot portion in height direction, at the width of described first sheet material, there is the queue that this gap zone arranges at spaced intervals.

2. pants-type wearing garments as claimed in claim 1, is characterized in that:

At described veutro portion and described drosal part, be configured with elastomer at width between described first sheet material and described second sheet material, with avoiding described slot portion, or both or any one of described first sheet material and described second sheet material are formed by the material with retractility.

3. pants-type wearing garments as claimed in claim 2, is characterized in that:

At described veutro portion and described drosal part, elastomer is configured with between described first sheet material and described second sheet material, with avoiding described slot portion at width, described elastomeric end with described gap zone non-gap zone side by side in the direction of the width, engage fixing by described first sheet material and described second sheet clamping.

4. pants-type wearing garments as claimed in claim 2 or claim 3, is characterized in that:

Make to be sandwiched in the band portion of part for growing crosswise between slot portion adjacent on height direction in the gap zone of described first sheet material, multiple involution portion is had at the partial configuration that this band portion is overlapping with described second sheet material, between described involution portion adjacent on the width of this pants-type wearing garments, described band portion and described second sheet material each on be formed with pleat.

5. the pants-type wearing garments according to any one of claim 2 ~ 4, is characterized in that:

Both or any one of described first sheet material and described second sheet material are implemented deep processing.

6. the pants-type wearing garments according to any one of claim 2 ~ 5, is characterized in that:

Described first sheet material self has retractility in waistline direction, and described first sheet material is attached on described second sheet material with elongation state.

7. the pants-type wearing garments according to any one of claim 2 ~ 6, is characterized in that:

Be implemented deep processing across fixing described first sheet material of elastomer and described second sheet material in waistline direction, described elastomer is fixed on described first sheet material and described second sheet material with elongation state.

8. the pants-type wearing garments according to any one of claim 1 ~ 7, is characterized in that:

The band portion of described first sheet material is with a part for alleviating distention in middle-JIAO and described second sheet material to fix at it, is formed with ruffle at the side edge part in the described band portion becoming free end.

9. pants-type wearing garments as claimed in claim 8, is characterized in that:

The band portion of described first sheet material is fixed at the central part of its width and described second sheet material.

10. the pants-type wearing garments according to any one of claim 1 ~ 9, is characterized in that:

Described gap zone configures in the mode avoided near the middle section of the width in described veutro portion and described drosal part and described side seal portion.

11. pants-type wearing garments according to any one of claim 1 ~ 10, is characterized in that:

Described pants-type wearing garments is shorts type diaper, in its skin abutment face side, configure the absorbent main body of liquid retainability in the mode being inserted into described veutro portion and described drosal part from described crotch, the described gap zone of described first sheet material configures in the mode near the configuring area avoiding described absorbent main body and near described side seal portion.

12. pants-type wearing garments according to any one of claim 1 ~ 11, is characterized in that:

In described first sheet material, making to be clipped in the band portion of part for growing crosswise each other of described slot portion adjacent on height direction, there is at the side edge part in this band portion the on-fixed portion do not fixed with described second sheet material, be formed with ruffle in this on-fixed portion.

13. pants-type wearing garments according to any one of claim 1 ~ 12, is characterized in that:

Described first sheet material is the outer material forming described exterior body, and described second sheet material is the internal layer material forming described exterior body, and described first sheet material is configured in the non-skin abutment face side of described second sheet material.

14. pants-type wearing garments according to any one of claim 1 ~ 13, is characterized in that:

Described exterior body is also configured in described crotch.

15. pants-type wearing garments according to any one of claim 1 ~ 14, is characterized in that:

Absorbent main body is configured with in the skin abutment face side of described exterior body.

The manufacture method of 16. 1 kinds of pants-type wearing garments, this pants-type wearing garments comprise the veutro being configured in wearer veutro portion, be configured in the crotch of crotch part and be configured in the drosal part of dorsal part, the feature of the manufacture method of described pants-type wearing garments is:

Conveying forms the continuum of the first sheet material and the continuum of the second sheet material of the exterior body of this pants-type wearing garments respectively, and comprises the steps:

Gap zone is formed at the continuum of described first sheet material, and form the step of this gap zone multiple in the conveying direction at spaced intervals, wherein, gap zone configure at spaced intervals in the direction orthogonal with throughput direction multiple along throughput direction formed slot portion formed;

By the continuum of described first sheet material and the continuum of the second sheet material stacked, form the veutro portion of described exterior body and the step of drosal part;

Make described veutro portion relative with described drosal part and overlapping, and respectively the both side edges of this veutro portion and drosal part engaged and form the step in side seal portion; With

Carry out cutting off in described side seal portion and be separated into the step of each pants-type wearing garments.

The manufacture method of 17. pants-type wearing garments as claimed in claim 16, is characterized in that:

Comprise the steps: in the veutro portion of described exterior body and the forming step of drosal part between the continuum and the continuum of the second sheet material of described first sheet material, avoid described slot portion elastomer is imported with elongation state, clamp this elastomer with the continuum of described first sheet material and the continuum of described second sheet material and engage fixing.

The manufacture method of 18. pants-type wearing garments as claimed in claim 17, is characterized in that:

In the veutro portion of described exterior body and the forming step of drosal part, described elastomer is imported with the state being coated with hot-melt adhesive, clamp this elastomer with the continuum of described first sheet material and the continuum of described second sheet material and engage fixing.

The manufacture method of 19. pants-type wearing garments as described in claim 17 or 18, is characterized in that:

In the veutro portion of described exterior body and the forming step of drosal part, with described gap zone non-gap zone side by side in the conveying direction, at least one coating hot-melt adhesive in the continuum of described first sheet material and the continuum of described second sheet material, fixes described elastomer bonded.

The manufacture method of 20. pants-type wearing garments according to any one of claim 17 ~ 19, is characterized in that:

In the veutro portion of described exterior body and the forming step of drosal part, be provided with described elastomeric state between the continuum and the continuum of described second sheet material of described first sheet material under, the side edge part in the band portion in the gap zone of the continuum of described first sheet material is engaged with described second sheet material embossing.

The manufacture method of 21. pants-type wearing garments according to any one of claim 16 ~ 20, is characterized in that:

In the forming step in described side seal portion, make described second sheet material each other inner side relatively and by described veutro portion and described drosal part overlapping.

The manufacture method of 22. pants-type wearing garments according to any one of claim 16 ~ 21, is characterized in that:

They are supplied to the continuum of described second sheet material under the state that the continuum of the first sheet material of the continuum and described drosal part that make first sheet material in described veutro portion separates at width.

The manufacture method of 23. pants-type wearing garments according to any one of claim 16 ~ 22, is characterized in that:

Make the continuum of the continuum of described first sheet material and described second sheet material stacked before, deep processing is implemented to any one in the continuum of described first sheet material and the continuum of described second sheet material or both, or make the continuum of the continuum of described first sheet material and described second sheet material be laminated arrangement after implement deep processing.