JP2008161300A - Elastic locking tape, its manufacturing method and tape type diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastic locking tape capable of effectively preventing the removal of a hook material by elasticity of a base material and sufficiently exerting the elastic force; a production method for simply and inexpensively manufacturing the same elastic locking tape; and a tape type diaper having the same elastic locking tape. <P>SOLUTION: This elastic locking tape 28 is used for fixing a front body section to a back body section of a diaper, consists of the base material 48 and a hook material of a mechanical fastener attached to the surface of the base material 48, the base material 48 is formed with an inelastic area 39 and an elastic area 32 continued thereto, the hook material 44 is attached to the inelastic area 30 of the base material, and the inelastic area 30 is formed to gradually broaden from the end of the area (a hook material attached area 34) attached with the hook material 44 toward its boundary 54 with the elastic area 32. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stretchable fastening tape for fixing a front body and a back body of a diaper according to a wearer's body shape, a manufacturing method thereof, and a tape-type diaper provided with such a stretchable fastening tape. It is about.

  In general, the tape-type diaper is arranged so as to cover the surface of the absorbent body 22 and the absorbent body 22, for example, like a tape-type diaper 100 shown in FIG. 2, and at least a part made of a liquid-permeable material. The sheet 18 is disposed so as to cover the back surface of the absorbent body 22 and includes a back sheet 20 made of a liquid-impermeable material, and includes a front body 2, a crotch 4, and a back body 6. The disposable diaper is further provided with a fastening tape 10 that is arranged so as to extend from the left and right side edges 6a, 6b of the back body 6, and for fixing the front body 2 and the back body 6 (for example, (See Patent Documents 1 and 2).

  According to such a tape-type diaper 100, the excrement of the wearer passes through the liquid-permeable portion of the top sheet 18 (the center sheet 18a in the figure) and is absorbed by the absorber 22, and usually the liquid Leakage to the outside is prevented by the back sheet 20 made of an impermeable material, and excrement can be held inside the diaper. Further, by fixing the front body 2 and the back body 6 of the diaper to each other with the fastening tape 10, there is also an advantage that the wearer can easily put on the diaper.

  In recent years, for the purpose of making it easier for a wearer to fit a tape-type diaper, a stretchable fastening tape (stretchable fastening tape) has been used (for example, see Patent Document 3). ). Such an elastic fastening tape is configured, for example, by attaching a hook material of a mechanical fastener to the surface of an elastic base material. However, such a stretchable fastening tape has a problem that the hook material is detached from the surface of the base material due to repeated stretching of the base material.

  In order to solve such a problem, for example, a base material is formed by a method such as joining a non-stretchable sheet to a stretchable sheet, and a non-stretchable elastic member is attached to the non-stretchable sheet portion of the base material. A tape has been proposed (see, for example, Patent Document 4).

JP 2004-141532 A JP 2004-24307 A Japanese Patent No. 3590069 Japanese Patent No. 3467405

  In the stretchable fastening tape described above, the base material is stretched and contracted exclusively at the stretchable sheet portion, and the non-stretchable sheet, which is an attachment site of the hook material, does not stretch. Therefore, it can be expected to solve the problem that the hook material is detached from the surface of the base material due to repeated expansion and contraction of the base material. However, the stretchable fastening tape having such a structure has a problem that the stretchability of the stretchable sheet may not be sufficiently exhibited, and still leaves room for improvement.

  Thus, at present, in addition to being able to effectively prevent the detachment of the hook material due to the expansion and contraction of the base material, an elastic fastening tape capable of fully exhibiting the expansion and contraction force is still disclosed. In addition, there is an urgent need for such a stretchable fastening tape and a method capable of producing such a stretchable fastening tape at a low cost by a simple manufacturing method.

  The present invention has been made to solve such problems of the prior art, and in addition to being able to effectively prevent the detachment of the hook material due to the expansion and contraction of the base material, it fully exhibits its expansion and contraction force. A stretchable fastening tape that can be manufactured, a production method capable of producing such a stretchable fastening tape at a low cost by a simple production method, and a tape-type diaper provided with such a stretchable fastening tape It is.

  As a result of intensive studies to solve the problems of the prior art as described above, the present inventor formed a non-stretchable region and a stretchable region continuous with the base material when forming a stretchable fastening tape. The present inventors have completed the present invention by conceiving that the above-mentioned problems can be solved by attaching a hook material to the non-stretchable region and adding a device to the shape of the non-stretchable region. Specifically, the present invention provides the following stretchable fastening tape, a method for producing the same, and a tape-type diaper.

[1] It is used for fixing a front body and a back body of a diaper, and includes a base material and a hook material of a mechanical fastener attached to a surface of the base material. A continuous stretchable region is formed, and the hook material is attached to the non-stretchable region of the base material, and the non-stretchable region extends from the end of the hook material attached region to which the hook material is attached to the stretchable region. Elastic fastening tape that is formed to become wider toward the boundary.

[2] The base is constituted by a composite sheet in which a non-stretchable sheet that forms the non-stretchable region and a stretchable sheet that forms the stretchable region are joined, and the composite sheet is an end portion of the non-stretchable sheet. The stretchable sheet is joined to be continuous, and the non-stretchable region is formed from a region where only the non-stretchable sheet is disposed and a joint region between the non-stretchable sheet and the stretchable sheet, The stretchable fastening tape according to [1], wherein the stretchable region is formed from a region where only the stretchable sheet is disposed.

[3] The base material is composed of a composite sheet in which a non-stretchable sheet that forms the non-stretchable region and a stretchable sheet that forms the stretchable region are joined, and the composite sheet is a surface of the stretchable sheet. The non-stretchable sheet is bonded so as to cover the portion or to be interposed inside the stretchable sheet, and the non-stretchable area is only a bonded area between the non-stretchable sheet and the stretchable sheet. The stretchable fastening tape according to [1], wherein the stretchable region is formed from a region where only the stretchable sheet is disposed.

[4] The stretchable fastening tape according to [2] or [3], wherein the hook material is attached to a surface of the non-stretchable sheet to which the stretchable sheet is bonded.

[5] The stretchable sheet is constituted by a sheet material (surface nonwoven fabric sheet) at least the surface of which is composed of a nonwoven fabric, and the base material has the hook material in a region closer to the end than the hook material attachment region. The elastic fastening tape according to any one of [2] to [4], wherein the hook material is folded back so as to be inside, and the surface of the surface nonwoven fabric sheet is temporarily fixed.

[6] A temporary fixing adhesive for temporarily fixing the diaper main body is applied to the surface of the surface nonwoven fabric sheet on which the hook material is temporarily fixed and / or the back surface of the folded base material. The elastic fastening tape according to [5] above.

[7] A long base sheet in which a belt-like non-stretchable region is formed at the center in the width direction and a belt-like stretchable region is formed on both sides of the belt-like non-stretchable region is prepared. After attaching a band-like long hook material along the longitudinal direction of the sheet to one surface of the non-stretchable region, the cutting trajectory has one stretchable region, a non-stretchable region, another stretchable region, non-stretchable The two elastic fastening tape intermediates are obtained by cutting into an S-curve shape that sequentially passes through the region and one elastic region, and each of the elastic fastening tape intermediates is formed into the S-curve shape. The manufacturing method of the elastic fastening tape which obtains a some elastic fastening tape by cut | disconnecting between the valley part of the made side edge, and the side edge formed in linear form.

[8] Production of the elastic fastening tape according to [7], wherein a long composite sheet in which a long elastic sheet is bonded to both side edges of the long non-elastic sheet is used as the long base sheet. Method.

[9] The stretch according to [8], wherein the long composite sheet is obtained by joining the long stretch sheet and attaching the long hook material to one surface of the long non-stretch sheet. Manufacturing method of adhesive fastening tape.

[10] As the long base sheet, a composite sheet in which a long non-stretchable sheet is bonded along the longitudinal direction of the long stretchable sheet so as to cover the center in the width direction of the long stretchable sheet. The manufacturing method of the elastic fastening tape as described in said [7] to be used.

[11] As the long stretchable sheet, a long surface nonwoven fabric sheet was used, and the stretchable fastening tape intermediate was linearly formed with a portion to which a hook material derived from the long hook material was attached. Folded between the side edges so that the hook material is on the inside, the hook material is temporarily fixed to the surface of the long surface nonwoven fabric sheet, and then the valley of the side edge formed in the S-curve shape The manufacturing method of the elastic fastening tape in any one of said [8]-[10] which cuts | disconnects between the side edge formed linearly.

[12] After the temporary fixing, a diaper main body on the surface of the long surface nonwoven fabric sheet that has been temporarily fixed and / or the back surface of the stretchable fastening tape intermediate folded at the time of the temporary fixing. The manufacturing method of the elastic fastening tape as described in said [11] which apply | coats the adhesive agent for temporary fixing for temporarily fixing with respect to.

[13] An absorber, a top sheet that is arranged to cover the surface of the absorber, and at least a part that is made of a liquid-permeable material, and a back sheet that is arranged to cover the back surface of the absorber. And a back sheet made of a sex material, and is composed of each part of the front body, the crotch part and the back body, and is arranged to extend from the left and right side edges of the back body, the front body and the above A tape-type diaper further comprising a fastening tape for fixing the back body, wherein the fastening tape is the elastic fastening tape according to any one of [1] to [6]. Type diapers.

[14] The tape-type diaper according to [13], wherein two each of the stretchable fastening tapes are arranged on each of the left and right side edges of the back body.

[15] In the above [13] or [14], a stretch material around the waist is attached along the edge of the back body, and a stretch material around the legs is attached at least along both side edges of the crotch The tape-type diaper described.

[16] The tape-type diaper according to any one of [13] to [15], wherein left and right side edge portions of the back body and a terminal portion of the stretchable fastening tape are joined.

  The elastic fastening tape of the present invention can effectively prevent the hook material from being detached due to the expansion and contraction of the base material, and can sufficiently exhibit its expansion and contraction force.

  Hereinafter, the elastic fastening tape of the present invention, the manufacturing method thereof, and the best mode for carrying out the tape-type diaper will be specifically described. However, the present invention broadly encompasses a fastening tape having the invention-specific matters, a manufacturing method thereof, and a tape-type diaper, and is not limited to the following embodiments.

  In the present specification, “tape-type diaper” means, as in the tape-type diaper 1 shown in FIG. 1, the absorbent body 22, the top sheet 18 at least partly made of a liquid-permeable material, and liquid-impermeable. A back sheet 20 made of material, and composed of a front body 2, a crotch 4 and a back body 6, and arranged so as to extend from the left and right side edges 6 a and 6 b of the back body 6. A disposable diaper further comprising a fastening tape 10 for fixing the back body 6 to the front body 2 is meant.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. When the wearer wears a diaper, the part covering the inseam of the wearer means the part covering the back side (back of the body) of the wearer.

[1] Elastic fastening tape:
The elastic fastening tape of the present invention is used to fix the front body 2 and the back body 6 of the diaper, like the elastic fastening tape 28 shown in FIGS. The base material 48 includes a hook material 44 of a mechanical fastener attached to the surface. The base material 48 includes a non-stretchable region 30 and a stretchable region 32 continuous thereto. The non-stretchable region 30 is attached to the stretchable region 30, and the non-stretchable region 30 is formed so as to become wider from the end of the hook material-attached region 34 toward the boundary 54 with the stretchable region 32.

  FIG. 3 is an enlarged view of the vicinity of the elastic fastening tape 28 of the tape-type diaper 1 shown in FIG. In the example shown in FIG. 3, the stretchable fastening tape 28 is configured by a composite sheet in which a base material 48 is joined to a non-stretchable sheet 60 that forms a non-stretchable region 30 and a stretchable sheet 62 that forms a stretchable region 32. Has been. The composite sheet is obtained by joining stretchable sheets 62 so as to be continuous with the end of the non-stretchable sheet 60. The non-stretchable region 30 of the base material 48 is formed of a region where only the non-stretchable sheet 60 is disposed and a joining region 66 between the non-stretchable sheet 60 and the stretchable sheet 62, and the stretchable region 32 is the stretchable sheet 62. Is formed from the region where only the substrate is disposed. That is, even in the region where the stretchable sheet 62 is disposed, the stretchable sheet 62 does not exhibit the stretchability of the region that overlaps the non-stretchable sheet 60, and is a non-stretchable region 30. In the state where the elastic fastening tape 28 is attached to the disposable diaper 1, the region overlapping the non-stretchable material such as the side flap 8 does not exhibit the stretchability of the stretchable sheet 62, and the non-stretchable region. It becomes.

  As shown in the stretchable fastening tape 28 shown in FIG. 3, the base material 48 is formed with a non-stretchable region 30 and a stretchable region 32 continuous thereto, and a hook material 44 is attached to the non-stretchable region 30 of the base material 48. In this case, even if the base material 48 expands and contracts, the expansion / contraction is performed exclusively in the expansion / contraction region 32, and the non-expansion / contraction region 30, which is the attachment portion of the hook material 44, does not expand / contract. Accordingly, it is possible to effectively prevent a problem that the hook material 44 is detached from the surface of the base material 48 due to repeated expansion and contraction of the base material 48.

  Further, like the stretchable fastening tape 28 shown in FIG. 3, the non-stretchable region 30 is formed so as to become wider from the end of the hook material attaching region 34 toward the boundary 54 with the stretchable region 32, It is possible to sufficiently exhibit the stretching force inherently possessed by the stretchable material (stretchable sheet 62) forming the stretchable region 32.

  More specifically, referring to FIG. 4 and FIG. 5, for example, the non-stretchable region 30 of the base material 48 extends from the end of the hook material attachment region 34, as in the stretchable fastening tape 28 shown in FIG. 4. When the non-stretchable region 30 of the base material 48 is pulled, the pulled force F is evenly transmitted to the entire width direction of the stretchable region 32. . Therefore, it is possible to sufficiently exert the stretching force inherently possessed by the stretchable material (stretchable sheet 62) forming the stretchable region 32.

  On the other hand, like the stretchable fastening tape 56 shown in FIG. 5, the non-stretchable region 30 of the base material 48 is formed so as to become wider from the end of the hook material attachment region 34 toward the boundary 54 with the stretchable region 32. However, when the non-stretchable region 30 of the base material 48 is pulled, the pulled force F is converged by the constricted portion 58 and stretched. It is transmitted only to the central region of the region 32. Accordingly, portions of the stretchable material (stretchable sheet 62) forming the stretchable region 32 in the vicinity of both side edges of the base material 48 are not used effectively, and the stretchable force inherent to the stretchable material is sufficient. Cannot be demonstrated.

  Note that “the non-stretchable region is formed so as to become wider from the end of the hook material attachment region toward the boundary with the stretchable region” means that the non-stretchable region of the base material is (1) the hook material attachment region. Compared with the end portion, the boundary portion with the stretchable region is wider, and (2) the width does not decrease once from the end of the hook material attachment region toward the stretchable region, Means. That is, in the stretchable fastening tape of the present invention, the width of the non-stretchable region always increases from the end of the hook material attachment region toward the boundary with the stretchable region, or the equivalent width is maintained, and the width decreases. It does not have a part (constriction part).

  As long as the conditions of (1) and (2) are satisfied, the shape of the non-stretchable region is not particularly limited, and the shape that extends from the end of the hook material attachment region toward the boundary with the stretchable region, for example, Examples include trapezoidal shapes and mountain shapes. The shape of the non-stretchable region may be any of a shape defined by a straight line, a shape defined by a curve, and a shape defined by a straight line and a curve. For example, in the stretchable fastening tape 28 shown in FIG. 3, the non-stretchable region 30 is formed in a mountain shape delimited by a curve starting from the end of the hook material-attached region 34, and in the vicinity of the boundary 54 with the stretchable region 32. This is an example in which only is formed in a rectangular shape partitioned by straight lines having the same width as the stretchable region 32.

  The stretchable fastening tape of the present invention is used to fix the front and back bodies of a diaper, and is composed of a base material and a hook material of a mechanical fastener attached to the surface of the base material. It is a member. This stretchable fastening tape is attached to the diaper main body so as to extend from the left and right side edges of the back body of the tape-type diaper, for example. A tape-type diaper with an elastic fastening tape can be made into a pants-type diaper by fixing the elastic fastening tape to the front of the diaper. It can be attached. For example, the tape-type diaper 1 shown in FIG. 1 is provided with an elastic fastening tape 28 so as to extend from the left and right side edges 6a and 6b of the back body 6 (more specifically, the side flap 8) of the diaper. This is an example.

  The “hook material” is a convex member of a mechanical fastener (also referred to as a planar fastener) and can be fixed by mechanical coupling with a loop material that is a concave material. The hook material is attached to the surface of the base material, more specifically, a “non-stretchable region” described later. As the “hook material”, for example, a material having a large number of protrusions (such as a bowl shape, a mushroom shape, a bowl shape) formed on the surface thereof is used. On the other hand, as the “loop”, those having loop-like fibers arranged on the surface are often used. In this fastener, the hook material is superimposed on the surface of the loop material, and a large number of protrusions of the hook material are engaged with the surface of the loop material, so that both members can be peeled and firmly fixed. it can.

  For example, in the tape-type diaper 1 shown in FIG. 1, a hook material 44 of a mechanical fastener is attached to the base material 48 of the stretchable fastening tape 28. On the other hand, the front body 12 is provided with a front patch 12 made of a loop material 52 of a mechanical fastener, and is configured so that the hook material 44 can be fixed. With such a configuration, the back body 6 of the diaper can be fixed to the front body 2, and the diaper can be worn by the wearer. FIG. 6 is a diagram illustrating a usage state of the tape-type diaper 1 illustrated in FIG. 1, and illustrates a state where the tape-type diaper 1 is attached to the wearer using the elastic fastening tape 28.

  The “base material” is formed with a non-stretchable region and a stretchable region continuous therewith. The non-stretchable region is disposed and used so that the stretchable region is positioned on the distal end side of the substrate and the stretchable region is positioned on the distal end side of the substrate. The “non-stretchable region” is a region for attaching a hook material, and the “stretchable region” is a region for imparting stretchability to the stretchable fastening tape.

  The non-stretchable region can be formed using a non-stretchable material. As the non-stretchable material, sheet materials made of various nonwoven fabrics such as spunbond, SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spunbond), card emboss, resin bond, etc. are used. be able to. In view of strength, it is preferable to use a sheet material made of a spunbonded nonwoven fabric. For example, the stretchable fastening tape 28 shown in FIG. 3 is an example in which the non-stretchable region 30 is formed of a sheet material (nonstretchable sheet 60) made of a nonstretchable nonwoven fabric.

  Examples of the constituent material of the nonwoven fabric include synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other thermoplastic resins. In this case, the synthetic fiber may be a single fiber or a composite fiber having a core-sheath structure or the like. In general, when a single fiber is used, polyolefin is often used, but it is also preferable to use polyester in consideration of strength.

  Moreover, the laminated body which laminated | stacked the some nonwoven fabric and / or a film can also be used as a non-stretchable raw material. When using a laminate of films, if a non-woven fabric or loop material that is easily engaged with the hook material is placed on the surface opposite to the surface on which the hook material is placed, the hook material is folded and fixed during packaging as will be described later. This is preferable because it can be performed.

Basis weight of the nonwoven fabric constituting the non-stretchable region is preferably set to 30 to 120 g / ^{m 2,} and more preferably be a 40 and 80 g / ^{m 2.} If the weight per unit area is less than 30 g / m ^{2, the} non-stretchable region that becomes the portion where the stretchable fastening tape is picked may be stiff and difficult to pick. On the other hand, when the basis weight is larger than 120 g / m ² , the non-stretchable region is not flexible, and the tape-applied portion is likely to be uncomfortable when the diaper is worn, which may deteriorate the wearing feeling.

  On the other hand, the stretchable region can be formed using a stretchable material. As the stretchable material, an elastic nonwoven fabric, an elastomer spunbond nonwoven fabric, or the like can be used. More specifically, Straflex (made by Idemitsu Unitech Co., Ltd.), Espancione (made by Kanebo Co., Ltd.), Elax (made by GPF Co., Ltd.) and the like can be suitably used under the trade names below.

  However, all portions of the stretchable region need not be made of a stretchable material, and the stretchable region may be formed by a stretchable laminated sheet in which a plurality of sheet materials including a stretchable material are laminated. For example, the stretchable fastening tape 28 shown in FIG. 3 has a stretchable region 32 formed by a stretchable sheet 62, which is a stretchable laminated sheet 64 having a structure as shown in FIG. . The stretchable laminated sheet 64 shown in FIG. 7 is formed by laminating a covering sheet 70 (70a, 70b) made of a nonwoven fabric or the like that can be deformed following the stretch of an elastic material on and under an elastic sheet 68 made of an elastic material. It is a laminated sheet having a three-layer structure joined by processing (in the figure, a portion indicated by reference numeral 72 is an embossed portion). Such a stretchable laminated sheet can also be used for forming a stretchable region.

  Examples of the “elastic material” include elastic thermoplastic synthetic resins such as styrene block copolymers, polyurethane block copolymers, polyester block copolymers, polyamide block copolymers, and the like. it can. Therefore, a sheet material made of these elastic materials can be suitably used as the “elastic sheet”. Moreover, as the “coating sheet”, for example, a nonwoven fabric made of thermoplastic synthetic resin fibers such as polyolefin fibers, polyester fibers, or composite fibers thereof can be suitably used.

  The base material is preferably composed of a composite sheet in which a non-stretchable sheet that forms a non-stretchable region and a stretchable sheet that forms a stretchable region are joined, in particular, a composite sheet in which both sheets are joined by fusion bonding. . By doing so, it becomes possible to firmly join the non-stretchable sheet and the stretchable sheet as compared with the case where they are bonded together by bonding with an adhesive or the like. It is possible to effectively prevent problems such as separation of the joint between the non-stretchable sheet and the non-stretchable sheet. Examples of the method of “fusion” include fusion by heating or pressurization such as embossing, ultrasonic fusion, and the like.

  The “composite sheet” is preferably one in which stretchable sheets are joined together so as to be continuous with the end of the non-stretchable sheet. In such a composite sheet, as shown in FIG. 3, the non-stretchable region 30 is formed of a region where only the non-stretchable sheet 60 is disposed and a joining region 66 between the non-stretchable sheet 60 and the stretchable sheet 62, The region 32 is formed from a region where only the stretchable sheet 62 is disposed.

  Moreover, as the “composite sheet”, a sheet in which a part of the surface of the stretchable sheet is covered or a non-stretchable sheet is bonded so as to be interposed inside the stretchable sheet is preferable. In such a composite sheet, as shown in FIG. 8, the non-stretchable region 30 is formed only from the bonding region of the non-stretchable sheet 60 (76) and the stretchable sheet 62 (stretchable laminated sheet 64), and the stretchable region 32 is formed from the area | region where only the elastic sheet 62 (elastic laminate sheet 64) is arrange | positioned. The composite sheet having such a structure can be formed from, for example, a composite sheet 74 as shown in FIG. The composite sheet 74 shown in FIG. 9 has a structure similar to the stretchable laminated sheet 64 shown in FIG. 7, but a non-stretchable sheet 76 is provided between the elastic sheet 68 and the covering sheet 70a in the center in the left-right direction of the drawing. It is intervened. When such a composite sheet 74 is divided into left and right at the central portion, a composite sheet in which the non-stretchable sheet 76 is bonded so as to be interposed in a part of the stretchable laminated sheet 64 can be formed.

  The composite sheet having the structure as described above has no seam between the stretchable region and the non-stretchable region, the product appearance is good, and the composite sheet in which the stretchable sheet is joined to the end of the non-stretchable sheet In comparison, there is an advantage that the process of joining the stretchable member and the non-stretchable member can be omitted when the fastening tape is manufactured, and the fastening tape can be easily manufactured. In addition, since a large step is not formed on the fastening tape, it is preferable in that it is difficult to cause inconvenience such as a step being caught on the production line in the process of folding the fastening tape at the time of manufacturing the diaper or the step of temporarily fastening the fastening tape. . Furthermore, even for the diaper wearer, it is difficult for troubles such as the stepped portion of the fastening tape to be caught on clothes, and even if the posture is such that the fastening tape is positioned on the lower side of the body. There is also an advantage that there is less pain due to the stepped portion of the wearing tape.

  In the stretchable fastening tape of the present invention, it is preferable that a hook material is attached to the surface where the stretchable sheet of the non-stretchable sheet is joined. That is, it is preferable that both the stretchable sheet and the hook material exist on one surface side of the non-stretchable sheet. As will be described later, when the hook material is temporarily fixed, it is preferable to fold the hook material toward the base side of the fastening tape to temporarily fix it, but the elastic sheet is provided on one surface side of the non-elastic sheet. When the hook material is folded, the stretchable sheet that easily engages with the hook material is positioned on the upper surface side (closer side) than the non-stretchable sheet. Therefore, the hook material can be easily engaged with the stretchable sheet, and the hook material can be temporarily fixed. On the other hand, when the non-stretchable sheet has a structure in which the stretchable sheet is present on one surface and the hook material is present on the other surface, when the hook material is folded back, An elastic sheet that is easy to engage with is positioned. Therefore, it becomes difficult to engage the hook material with the elastic sheet, and there is a risk that reliable temporary fixing of the hook material may be hindered. FIG. 10 is a schematic cross-sectional view schematically showing a cross section of the vicinity of the side edge 6 a of the tape-type diaper and the stretchable fastening tape 28. In the stretchable fastening tape 28 shown in FIG. 10A, the stretchable sheet 62 is joined to one surface (the upper surface in the figure) of the non-stretchable sheet 60, and the hook material 44 is attached. This is an example.

  Further, in the stretchable fastening tape of the present invention, the stretchable sheet is composed of a surface nonwoven fabric sheet, and the base material is folded back so that the hook material is inside in the region on the terminal side of the hook material attached region. Is preferably temporarily fixed to the surface of the surface nonwoven fabric sheet. If the elastic sheet is composed of a surface nonwoven fabric sheet, the hook material can be more easily engaged with the elastic sheet. If the hook material is temporarily fixed to the surface of the surface nonwoven fabric sheet, unintended bending of the hook material can be prevented at the time of manufacturing the diaper. In general, the process of attaching a separate fastening tape to the diaper main body is inevitably slower than the production speed of the diaper main body. Therefore, when the fastening tape is manufactured, it is easy to attach the fastening tape to the diaper body by temporarily folding and temporarily fastening the hook portion with unevenness, and attaching the fastening tape to the diaper body. The production speed can be increased. In addition, if the hook is attached to the diaper body with the engagement surface exposed, the fastening tape is laid under the wearer's body when the diaper is worn, and the diaper body and the The problem that the adhesive tape is engaged and it becomes difficult to use the fastening tape can be avoided.

  In the stretchable fastening tape 28 shown in FIG. 10 (b), the stretchable sheet 62 is constituted by the surface nonwoven fabric sheet 78, and the base material 48 is in the region closer to the end than the hook material attachment region 34. The hook material 44 is temporarily fixed to the surface of the surface nonwoven fabric sheet 78. And, the elastic fastening tape 28 temporarily fixed in this way is usually composed of a folded tip of the base material 48 and the elastic fastening tape 28 as shown in FIG. 10 (c). 1 is further folded back in the region between the side edges 6a of the attached tape-type diaper, folded into a form stored in a diaper main body (side flap 8 in the illustrated example), and marketed (tape-type diaper 1 in FIG. 1). (See the elastic fastening tape 28 on the right side).

  In order to obtain the folded state as shown in FIG. 10 (c), (1) As shown in FIGS. 10 (a) to 10 (c), first, the end of the elastic fastening tape 28 is moved to the side. After fixing to the flap 8 (see (a) figure), folding the elastic fastening tape 28 and temporarily fixing the hook material 44 (see (b) figure), the folding fastening tape 28 is further folded back, The folded portion can be temporarily fixed to the side flap 8 (see FIG. (C)).

  However, (2) as shown in FIGS. 11 (a) to 11 (d), the elastic fastening tape 28 is folded in advance and the hook material 44 is temporarily fixed ((a) and (b). ) Refer to the figure), after fixing the end of the folded elastic fastening tape 28 to the side flap 8 (see (c)), the folded elastic fastening tape 28 is further folded back and folded back. Or the temporary fastening of the elastic fastening tape 28 as shown in FIGS. 12 (a) to 12 (d). The hook material 44 is folded and temporarily fixed (see FIGS. (A) and (b)), and the folded portion is temporarily fixed to the side flap 8 (see (c)), and then elastically fastened. The end of the tape 28 is folded back and fixed to the side flap 8 ((d) figure. It is preferably carried out in a way that irradiation).

  In the method shown in FIGS. 10 to 11, the side flap 8 is not covered with another member and is in an open state. Therefore, the stretchable fastening tape 28 and the side flap 8 can be joined by fusion such as heat sealing or ultrasonic fusion. Compared to bonding by adhesive, the bonding by fusion is manufactured because the bonded portion is hardly loosened due to the body temperature of the wearer and the elastic fastening tape 28 is hardly displaced or detached, and no adhesive is used. There is an advantage that the cost can be reduced.

  On the other hand, the method shown in FIG. 12 has a relatively low specific gravity because the tip end portion of the tape having the hook material 44 and having a high specific gravity is temporarily fixed to the side flap 8 in advance and the tape end is fixed to the side flap 8. The end of the tape is folded and fixed. Therefore, there is an advantage that the folding operation becomes easier as compared with the case where the leading end portion of the tape is folded.

  10 to 12 show examples in which the elastic fastening tape 28 is bonded to the back surface of the side flap 8 (the surface opposite to the skin contact surface, the lower surface in the figure). The adhesive fastening tape 28 may be bonded to the surface of the side flap (skin contact surface; upper surface in the figure), and when the side flap 8 has a structure in which a plurality of sheet materials are laminated, You may fix so that the elastic fastening tape 28 may be pinched | interposed between the layers of several sheets.

  In the present specification, the term “side flap” means a sheet portion projecting outward from the side edge of the absorbent body. The “side flap” is generally formed on both the front body side and the back body side of the diaper, and the elastic fastening tape is usually attached to the side flap on the back body side. This side flap may be formed by a sheet constituting a diaper, for example, a top sheet (including a side sheet), a back sheet (including a cover sheet), or formed by a bonded portion of these sheets. May be. Further, a side flap may be formed by attaching a sheet material separate from these sheets.

  Furthermore, the stretchable fastening tape of the present invention is for temporary fixing for temporarily fixing the diaper main body to the surface of the surface nonwoven fabric sheet and / or the back surface of the folded base material to which the hook material is temporarily fixed. It is preferable that an adhesive is applied.

  13 and 14 are schematic cross-sectional views schematically showing the vicinity of the side edge 6a of the tape-type diaper and the cross-section of the elastic fastening tape 28. FIG. The elastic fastening tape 28 shown in FIG. 13C is a temporary fixing adhesive for temporarily fixing the surface of the surface nonwoven fabric sheet 78 to which the hook material 44 is temporarily fixed to the diaper main body. 80 is applied. On the other hand, the elastic fastening tape 28 shown in FIG. 14C has a temporary adhesive 80 applied to the back surface of the folded base material 48.

  Then, the stretchable fastening tape 28 to which the adhesive 80 for temporary fastening is applied in this way, as shown in FIG. 13 and FIG. Is further folded in the region between the side edge 6a of the tape-type diaper to which the adhesive fastening tape 28 is attached, and is folded and put on the diaper main body (side flap 8 in the illustrated example) in a temporarily fixed state. . When the adhesive 80 for temporary fixing is apply | coated to the back surface of the turned-back base material 48 like the elastic fastening tape 28 shown to the figure (c) of FIG. 14, it shows to the (d) figure of FIG. Thus, the part near the front-end | tip of the folded base material 48 will be temporarily fixed to a diaper main body. Therefore, compared to the case where the free end of the elastic fastening tape 28 is securely fixed, and the portion near the end of the folded base material is temporarily fixed to the diaper body, the portion is difficult to peel off, This is preferable in that the temporary fastening effect of the elastic fastening tape 28 is excellent.

  13 and 14 show an example in which the end of the elastic fastening tape 28 is fixed to the side flap 8 before folding (see FIG. 11A), as in FIG. Similarly, the stretchable fastening tape 28 is folded in advance so that the hook material 44 is temporarily fastened (see FIGS. 11A and 11B), and the end of the folded stretchable fastening tape 28 is obtained. Is fixed to the side flap 8 (see FIG. 3C), the fixed elastic fastening tape 28 is further folded back, and the folded portion is temporarily fixed to the side flap 8 (FIG. 4D). In the same manner as in FIG. 12 and FIG. 12, the elastic fastening tape 28 is folded in advance to temporarily fix the hook material 44 (see FIGS. 12 (a) and 12 (b)). After temporarily fixing the part to the side flap 8 ( See (c) Fig.), Folded back ends of the elastic fastening tape 28 is fixed to the side flap 8 is preferably carried out in a way that (the see (d) Figure).

  13 and 14, the elastic fastening tape 28 may be joined to the back surface of the side flap (the upper surface in the figure), or the side flap 8 is a structure in which a plurality of sheet materials are laminated. May be fixed so that the stretchable fastening tape 28 is sandwiched between layers of the plurality of sheets.

  Further, in the example shown in FIGS. 13 and 14, an example in which the temporary fixing adhesive 80 is applied after the hook material 44 is temporarily fixed (that is, in the state of FIGS. 13 to 14 (b)) is shown. However, the temporary fixing adhesive 80 may be applied before the hook member 44 is temporarily fixed (that is, in the state shown in FIGS. 13 to 14B). Further, the temporary fixing adhesive 80 is in a state before the elastic fastening tape 28 is joined to the diaper body, that is, in a process of continuously producing the elastic fastening tape 28 continuously or intermittently. It is preferable to apply it. Since the production speed of the process of continuously producing only the elastic fastening tape is usually lower than the production speed of the diaper main body part, the adhesive for temporary fastening is used in the process where the production speed is low. By applying 80, compared to the case where the adhesive for temporary fixing is applied after the elastic fastening tape is joined to the diaper main body, it becomes difficult to cause the application deviation of the adhesive and the manufacture becomes easy.

[2] Method for producing elastic fastening tape:
The manufacturing method of the stretchable fastening tape of the present invention is a long base sheet in which a strip-shaped non-stretchable region is formed at the center in the width direction, and a strip-shaped stretchable region is formed on both sides of the strip-shaped non-stretchable region. Prepared, and attached to one surface of the non-stretchable region of the long base sheet with a strip-shaped long hook material along the longitudinal direction of the sheet, the cutting trajectory has one stretchable region, non-stretchable Two elastic fastening tape intermediates are obtained by cutting into an S-curve shape that sequentially passes through a region, another stretchable region, a non-stretchable region, and one stretchable region, and each stretchable fastening tape intermediate A plurality of elastic fastening tapes are obtained by separating between the valleys of the side edges formed in the S-curve shape and the side edges formed in a straight line shape. By such a method, it is possible to effectively prevent the detachment of the hook material due to the expansion and contraction of the base material, and the elastic fastening tape of the present invention that can sufficiently exhibit the expansion and contraction force is inexpensively manufactured by a simple manufacturing method. It can be manufactured.

[2-1] Formation of long base sheet:
In the production method of the present invention, first, a long base sheet is prepared in which a belt-like non-stretchable region is formed at the center in the width direction, and a belt-like stretchable region is formed on both sides of the belt-like non-stretchable region. By using such a long base sheet, a large number of the elastic fastening tapes of the present invention can be produced at a time by a simple production method such as S-cut described later. Therefore, the elastic fastening tape can be manufactured at a low cost.

  As long as the non-stretchable region and the stretchable region are arranged as described above, the “long substrate sheet” is not particularly limited in terms of other configurations. It is preferable to use a long composite sheet to which an elastic sheet is bonded. For example, FIG. 15 and FIG. 16 are process diagrams showing the steps of the manufacturing method of the present invention. In the illustrated manufacturing method, as the long base sheet 86, on both side edges of the long non-stretchable sheet 82, A long composite sheet 88 to which a long stretchable sheet 84 is joined is used. In such a long composite sheet 88, a strip-shaped non-stretchable region is formed by the long non-stretchable sheet 82 disposed in the center in the width direction, and the long stretchable sheet disposed on both sides of the strip-shaped non-stretchable region. A band-shaped stretchable region is formed by 84. Since such a long composite sheet can be manufactured by supplying a long stretchable sheet and a long non-stretchable sheet in the flow direction of the production line, production efficiency is improved and manufacturing cost is reduced. be able to. In addition, by changing the width of the long stretchable sheet and long non-stretchable sheet, the stretchable area of the stretchable fastening tape, the width or ratio of the nonstretchable area can be freely adjusted, Since the materials of the long non-stretchable sheet can be freely selected and combined, it is possible to produce various forms of stretchable fastening tapes according to the user and production type of the diaper.

  As described above, as a long base sheet, when using a composite sheet in which a long stretchable sheet is bonded to both side edges of a long non-stretchable sheet, a long non-stretchable sheet and a long stretchable sheet, Are preferably joined by fusion bonding. By fusing both sheets, it is possible to perform strong bonding even when the bonding margin between both sheets is small (narrow) as compared to bonding with an adhesive or the like. According to such a configuration, an elastic material having a relatively high cost can be used without waste, and an inexpensive elastic fastening tape can be provided.

  The joining allowance is preferably 5 to 20 mm, and more preferably 8 to 15 mm. If the width of the joining allowance is narrower than 5 mm, the allowable width for manufacturing becomes narrow, and manufacturing may be difficult. On the other hand, if the width of the joining allowance is wider than 15 mm, the stretchability of the relatively expensive stretchable sheet is increased and the portion where the sheet is laminated is unnecessarily increased. Due to the increase in the thickness, the thick part of the fastening tape increases, and the usability may deteriorate.

  Examples of the fusion method include heat fusion and pressure fusion such as heat sealing and hot embossing, and ultrasonic fusion. In the manufacturing method shown in FIGS. 15 and 16, a long composite sheet 88 obtained by fusing a long non-stretchable sheet 82 and a long stretchable sheet 84 by heat sealing is used as the long base sheet 86.

  The long non-stretchable sheet 82 and the long stretchable sheet 84 are preferably fused in a discontinuous pattern. Such a method can prevent the entire elastic fastening tape from being broken even when the fusion part is broken due to excessive heat and pressure due to variations in the process. The “non-continuous pattern” may be a pattern in which dots are intermittently arranged, a broken line pattern, or the like, but is a pattern in which diagonal lines (straight lines inclined with respect to the edge of the sheet) are intermittently arranged. Also good. Further, such a pattern may be formed in only one row or in a plurality of rows along the edge of the sheet.

  In addition, when using a composite sheet in which a long stretchable sheet is joined to both side edges of the long non-stretchable sheet as a long base sheet, the long stretchable sheet in the long nonstretchable sheet is joined. It is also a preferred form to attach a long hook material to the surface. In this embodiment, both the long stretchable sheet and the long hook material are disposed on one surface of the long non-stretchable sheet.

  According to the method as described above, even when the long hook material is attached after joining the long non-stretchable sheet and the long stretchable sheet, the long hook material can be used without causing excessive distortion in the sheet. Can be attached. In addition, even when the hook material is temporarily fixed to the surface of the stretchable sheet, the stretchable sheet and the hook material on the same side of the non-stretchable sheet can be pressed firmly without forming a gap. It is possible to easily manufacture both without causing a trouble that the both can be easily temporarily engaged and the temporary fixing is released in a later process. On the other hand, the method of arranging the long stretchable sheet and the long hook material on different surfaces of the long nonstretchable sheet is to attach the long hook material after joining the long nonstretchable sheet and the long stretchable sheet. Then, a long hook material must be attached to the portion of the long non-stretchable sheet that is lifted by the two long stretchable sheets. Therefore, excessive distortion is likely to occur in the sheet, and it may be difficult to bond the sheet and the hook material.

  Furthermore, in the production method of the present invention, a long composite sheet in which a long non-stretchable sheet is bonded to the center in the width direction of the long stretchable sheet may be used as the long base sheet. By preparing such a long composite sheet in advance, a long hook material can be directly used on the diaper production line without requiring a process of bonding the long non-stretchable sheet and the long stretchable sheet. Can be added, and the manufacturing process and manufacturing equipment can be simplified. Therefore, the production of the elastic fastening tape is facilitated, and the risk of the occurrence of defective products in the process of producing the long composite sheet can be avoided. Moreover, it is possible to reduce the investment in the bonding equipment and the maintenance cost. Furthermore, the stretchable fastening tape obtained by this method has a structure in which the whole is composed of a stretchable sheet and a non-stretchable sheet is laminated on a part of the stretchable tape. There is no seam portion between the two sheets as in the case of the obtained one, and there is an advantage that the elastic fastening tape does not break from the seam portion.

  For example, FIG. 17 is a process diagram showing the steps of the manufacturing method of the present invention. In the manufacturing method shown in the figure, the long base sheet 86 is not long in the center in the width direction of the long stretchable sheet 84. A long composite sheet 88 to which an elastic sheet 82 is joined is used. Such a long composite sheet 88 also has a long non-stretchable region 82 formed by the long non-stretchable sheet 82 disposed at the center in the width direction, and the long non-stretchable sheet 82 is not disposed. A belt-like stretchable region is formed on both side edges of the stretchable sheet 84.

  This long composite sheet 88 has the same cross-sectional structure as the composite sheet 74 shown in FIG. Specifically, an elastic sheet that covers the entire region and a long non-stretchable sheet 82 disposed in the central region are sandwiched between two long covering sheets and integrated by hot embossing. . By doing so, it is possible to obtain a long composite sheet 88 in which a long non-stretchable sheet 82 is bonded so as to be interposed inside a long stretchable sheet 84 as shown in FIG. However, the method for integrating a plurality of sheets is not limited to hot embossing, and may be a method such as fusion by ultrasonic waves or adhesion by an adhesive. In the example shown in FIG. 17, the long non-stretchable sheet 82 is attached so as to be interposed inside the long stretchable sheet 84, but this long non-stretchable sheet 82 is a long stretchable sheet 84. It may be bonded to cover a part of the surface. However, in order to prevent troubles such as the appearance of the product and the edge of the long non-stretchable sheet being exposed and being caught by the manufacturing apparatus during production, as shown in FIG. It is preferable to stick the long non-stretchable sheet 82 so as to be worn. The stretchable fastening tape obtained by this method has an advantage that the appearance of the product is good because the step portion formed by the stretchable sheet and the non-stretchable sheet is not exposed on the surface of the tape.

[2-2] Attachment of long hook material:
Next, a strip-shaped long hook material is attached to one surface of the non-stretchable region of the long base sheet as described above along the longitudinal direction of the sheet. The hook material can be attached by adhesion using an adhesive such as a hot melt adhesive, fusion by heating or pressurization, or a combination of these methods. When a long composite sheet is manufactured by joining a long non-stretchable sheet and a long stretchable sheet, the long hook material is attached to the long non-stretchable sheet before joining both sheets together. Alternatively, the two sheets may be bonded to form a long composite sheet, and then attached to a portion derived from the long non-stretchable sheet of the long composite sheet.

  When using a composite sheet in which a long stretchable sheet is bonded to both side edges of a long non-stretchable sheet as a long base sheet, the long stretchable sheet of a long nonstretchable sheet is bonded It is preferable to attach a long hook material to the surface of the. By doing so, both the long stretchable sheet and the long hook material can be arranged on one surface side of the long non-stretchable sheet. With such a structure, since the long stretchable sheet and the long hook material are arranged so as to be convex with respect to one surface of the long non-stretchable sheet, the overall unevenness is reduced. There is an advantage that the production can be performed stably and easily. The manufacturing method shown in FIG. 15 and FIG. 16 uses a long composite sheet 88 in which a long stretchable sheet 84 is bonded to both side edges of a long non-stretchable sheet 82 as a long base sheet 86. This is an example in which both the long stretchable sheet 84 and the long hook material 90 are arranged on one surface of the non-stretchable sheet 82.

[2-3] Cutting long base sheet:
After attaching the long hook material as described above, the long base material sheet attached with the long hook material has a cutting trajectory having one stretch region, a non-stretch region, another stretch region, a non-stretch region, Cut into an S-shaped curve that sequentially passes through one stretchable region to obtain two stretchable fastening tape intermediates. This cutting is not particularly limited as long as it is cut into a continuous shape, but normally, as shown in FIGS. 15 to 17, the trajectory has a continuous S-shape, that is, a periodic wave shape. It is preferable to cut into pieces. By doing so, it becomes possible to obtain a large number of stretchable fastening tapes formed so that the non-stretchable region becomes wider from the end of the hook material attachment region toward the boundary with the stretchable region.

[2-4] Formation of elastic fastening tape:
Finally, a plurality of elastic fastening tapes can be obtained by separating between the valleys of the side edges formed in the S-curve shape of each elastic fastening tape intermediate and the side edges formed in a straight line. obtain. According to the method as described above, a large number of stretchable fastening tapes can be produced simply and efficiently.

  Specifically, as shown in FIGS. 15 to 17 (b) to (c), the side edge troughs 94 formed in the S-curve shape of each elastic fastening tape intermediate 92 and A plurality of elastic fastening tapes 98 are obtained by separating between the side edges 96 formed in a straight line. In the illustrated example, each elastic fastening tape intermediate body 92 is orthogonal to the side edge 96 between the side edge valley portion 94 formed in the S-curve shape and the side edge 96 formed linearly. A plurality of elastic fastening tapes 98 are obtained by separating in the direction.

  A plurality of stretchable fastening tapes can be obtained by separating the stretchable fastening tape intermediate in this way. However, it is preferable to temporarily fix the hook material and the stretchable fastening tape prior to the “separation”. This is because, when the stretchable fastening tape having a free end is in a floating state, there is a risk of causing troubles such as the free end being caught in a manufacturing facility during continuous production.

  For example, a long surface nonwoven fabric sheet is used as the long stretchable sheet, and the stretchable fastening tape intermediate is provided with the hook material on the inside between the portion where the hook material is attached and the side edge formed linearly. The hook material is temporarily fixed to the surface of the long surface nonwoven fabric sheet, and then the gap between the valley portion of the side edge formed in the S-curve shape and the side edge formed in the linear shape can be separated. preferable. Temporarily fix before disconnecting between the valleys of the side edges formed in the S-curve shape and the side edges formed in a straight line, so that the folding work for a plurality of elastic fastening tapes is temporarily performed The folding operation can be performed continuously, and the folding operation can be performed stably and efficiently as compared with the case where the folding operation is performed after “separation”.

  In the manufacturing method shown in FIGS. 15 to 17, the long surface nonwoven fabric sheet 102 is used as the long stretchable sheet 84, and the stretchable fastening tape intermediate 92 is formed linearly with the portion provided with the hook material. Folded between the side edges 96 so that the hook material 44 is inside, temporarily hooks the hook material 44 to the surface of the long surface nonwoven fabric sheet 102, and then the valleys of the side edges formed in an S-shaped curve This is an example in which the gap between 94 and the side edge 96 formed in a straight line is cut off.

  Furthermore, in the production method of the present invention, after the temporary fixing (temporary fixing of the hook material), the surface of the long surface nonwoven fabric sheet that has been temporarily fixed and / or the elastic property folded back at the time of temporary fixing. It is also preferable to apply a temporary fixing adhesive for temporarily fixing the diaper main body to the back surface of the fastening tape intermediate. By preliminarily applying the temporary fixing adhesive in this way, it is possible to securely temporarily fix the free end of the elastic fastening tape to the diaper main body, and the subsequent process, for example, packaging the diaper Therefore, even in the folding process or the like, it is possible to prevent manufacturing troubles caused by the free end of the elastic fastening tape moving. In addition, by applying adhesive for temporary fixing prior to “separation” of the elastic fastening tape intermediate, the adhesive application work for multiple elastic fastening tapes can be performed at once and continuously. Compared with the case where the application operation is performed after “separation”, the application operation can be performed stably and efficiently.

  In addition, you may employ | adopt the method of apply | coating the adhesive agent for temporary fixing to the side flap side of a diaper instead of the elastic fastening tape intermediate body and the elastic fastening tape after cut | disconnecting. However, in such a method, it is necessary to intermittently apply a temporary fixing adhesive to a specific portion of the side flap of the diaper. Therefore, it is difficult to apply the temporary fixing adhesive at a desired position even if it is attempted to apply the temporary fixing adhesive in the continuous production process of the diaper. There is a risk of adhering to manufacturing equipment. As described above, the method of applying the temporary fixing adhesive prior to the "separation" of the elastic fastening tape intermediate is performed when the temporary fixing adhesive 80 is intermittently applied as shown in FIG. Even if the application position is deviated, it is possible to effectively prevent the temporary fixing adhesive 80 from adhering to other parts of the diaper or manufacturing equipment.

  In the manufacturing method shown in FIGS. 15 to 17, the hook material 44 is temporarily fixed to the surface of the long surface nonwoven fabric sheet 102, and the surface of the long surface nonwoven fabric sheet 102 and / or the temporary fixing is temporarily fixed. After applying the adhesive 80 for temporary fixing for temporarily fixing the diaper main body to the back surface of the elastic fastening tape intermediate 92 folded back, the valley of the side edge formed in the S-curve shape This is an example in which the portion 94 and the side edge 96 formed in a straight line are separated.

  The application of the adhesive may be performed after the separation between the valley portion of the side edge formed in the S-curve shape and the side edge formed in the straight shape, but the operation is performed continuously. Is preferably performed prior to the separation. That is, according to this method, since the part to which the temporary fixing adhesive is applied becomes continuous, it is not necessary to adjust the timing and position of application.

  The manufacturing method shown in FIGS. 15 and 17 is an example in which a temporary fixing adhesive 80 is applied to the surface (the hook material-attached surface) of the long surface nonwoven fabric sheet 102 on which the hook material is temporarily fixed. The manufacturing method shown is an example in which the adhesive 80 for temporary fixing is applied to the back surface (the surface on the back side of the hook material-attached surface) of the stretchable fastening tape intermediate 92 that is folded back when the hook material is temporarily fixed. The adhesive may be applied by a contact method such as shim coating, or by a non-contact method such as spiral coating, bead coating, or CS gun coating. Also good. However, as in the manufacturing method shown in FIGS. 15 and 17, when the temporary fixing adhesive 80 is continuously applied to a coated surface having no steps, the adhesive can be stably applied. For the reason that a sufficient amount of the pressure-sensitive adhesive can be supplied, it is preferable to perform the coating by the contact-type coating method. On the other hand, when the temporary fixing adhesive 80 is intermittently applied to a coated surface having a step as in the manufacturing method shown in FIG. 16, it is preferable to apply the non-contact type application method. .

[3] Tape-type diapers:
The tape-type diaper of the present invention is provided with the stretchable fastening tape of the present invention already described as the fastening tape. More specifically, the absorber is disposed so as to cover the surface of the absorber, and is disposed so as to cover at least a part of the liquid-permeable material and the back surface of the absorber. A back sheet made of a permeable material, and is composed of each part of the front body, the crotch part and the back body, and is arranged so as to extend from the left and right side edges of the back body, the front body and the back body The fastening tape is a tape-type diaper that is the stretchable fastening tape of the present invention.

[3-1] Fastening tape:
If the tape-type diaper of this invention is provided with the stretchable fastening tape of this invention already demonstrated as the fastening tape, there will be no restriction | limiting about another structure. However, it is preferable that two each of the stretchable fastening tapes of the present invention are disposed on each of the left and right side edges of the back body. For example, the tape-type diaper 1 shown in FIGS. 1 and 6 has two elastic fastening tapes 28 of the present invention disposed on each of the left and right side edges 6a and 6b of the back body 6. In this way, a tape-type diaper in which two elastic fastening tapes are arranged is a wearer's body shape, specifically around the waist and around the legs, compared to a tape-type diaper in which one piece is placed. It is excellent in that the tape position and the tightening degree can be adjusted according to the dimensions.

  The tape-type diaper of the present invention is preferably one in which the stretchable fastening tape of the present invention is joined to the diaper body by fusion. By joining by fusion | bonding, compared with the adhesion | attachment using an adhesive agent etc., firm joining can be aimed at, and the situation where a stretchable fastening tape falls from a diaper main body can be prevented effectively. In particular, the stretchable fastening tape of the present invention is effective because the stretchable region may be formed at the end thereof as in the stretchable fastening tape shown in the figure. This is because if the stretchable region is formed at the end portion, the stretchable fastening tape may fall off from the diaper body due to repeated stretching of the stretchable fastening tape. The tape-type diaper 1 shown in FIG. 1 is ultrasonically welded to the side edges 6a and 6b of the back body 6 of the diaper main body, more specifically to both side edges of the side flap 8 constituted by the side seat 18b. This is an example in which the elastic fastening tape 28 is joined.

[3-2] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The tape-type diaper 1 shown in FIG. 1 is an example in which an hourglass-type absorber is used as the absorber 22.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[3-3] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the back surface side needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the form which comprises the top sheet arrange | positioned at the surface part of an absorber and the top sheet arrange | positioned in the part of a side flap by a different sheet | seat is also utilized frequently. The tape-type diaper 1 shown in FIG. 1 has a top sheet 18 (center sheet 18a) made of a liquid-permeable material at the center of the diaper, and the side flap 8 part of the diaper is resistant to liquid permeation. It is the example which has arrange | positioned the top sheet 18 (side sheet 18b) which consists of ventilation water-repellent material which shows.

[3-4] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper. Although there is no restriction | limiting in particular about the arrangement | positioning method, For example, the structure which arrange | positions the back seat | sheet 20 so that it may correspond with the external shape of a diaper like the tape-type diaper 1 shown in FIG. However, it is not always necessary to adopt such a configuration. From the viewpoint of preventing leakage of urine absorbed by the absorber, a back sheet made of a liquid-impermeable material is disposed at least in a portion where the absorber is present. May be.

  Examples of the liquid-impermeable material constituting the back sheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm and is liquid impervious but has moisture permeability. There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[3-5] Solid gather:
In order to prevent the side leakage of the urine excreted by the wearer, a three-dimensional gather may be provided. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet and the back sheet, but may be formed by folding back a top sheet such as a center sheet or a side sheet. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is formed by folding back the side sheet 18b. However, the three-dimensional gather may be formed by folding back a member other than the top sheet such as a second sheet.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the tape-type diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 26 (26a, 26b) formed continuously from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. An example is shown. Further, at least one pair of solid gathers must be formed, but two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is inwardly gathered.

[3-6] Various elastic materials:
In a tape-type diaper, it is preferable to arrange an elastic material around the legs and arrange an elastic material around the waist.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body when changing the diaper, so that the vicinity of the crotch portion is deformed into a bowl shape and a recess is formed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the tape-type diaper 1 shown in FIG. 1 is an example in which leg gathers are formed by arranging two leg-around elastic members 40 linearly along the longitudinal direction of the diaper. The leg-around elastic member 40 is made of rubber thread. However, the leg-surrounding elastic members are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  The leg stretchable material is preferably formed with a leg stretchable material 40 in a portion outside the upright line 46 of the three-dimensional gather 26, for example, like the tape-type diaper 1 shown in FIG. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The tape-type diaper 1 shown in FIG. 1 shows an example in which the shape, arrangement position, number of arrangements, etc. of the leg elastic members 40 are bilaterally symmetric. However, these are also included in the scope of the present invention. It is. And in the tape-type diaper 1 shown in FIG. 5, although the example in which the leg periphery elastic material 40 was arrange | positioned two on one side was shown, only one may be arrange | positioned and three or more may be arrange | positioned. Good. Further, when using a plurality of leg-surrounding stretchable materials, the thickness, stretch rate, etc. may be set as appropriate according to the purpose, and it is not necessary to use the same for all.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, preventing urine leakage from around the waist, and improving the fit of the diaper to the wearer, thereby preventing the diaper from falling down.

  In addition, the tape-type diaper 1 shown in FIG. 1 is the example which has arrange | positioned the strip | belt-shaped waist circumference elastic material 42 along the edge of the back body 6 of a diaper. The belt-like waist elastic member 42 is made of an elastic foam such as urethane foam. In the illustrated example, the waist elastic member 42 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  For example, like the tape-type diaper 1 shown in FIG. 1, the tape-type diaper 1 shown in FIGS. 1 and 6 is attached to the left and right side edges 6 a and 6 b of the back body 6 by the elastic fastening of the present invention. When two tapes 28 are arranged, a waist elastic material 42 is provided along the edge of the back body 6 and a leg elastic material 40 is provided along at least both side edges of the crotch 4. It is preferable.

  With the configuration as described above, the elastic fastening tape 28 disposed on the upper side of the two elastic fastening tapes 28 and the waist elastic material 42 are integrated to fit the diaper around the wearer's waist. Can be improved. In addition, the elastic fastening tape 28 disposed on the lower side of the two elastic fastening tapes 28 and the leg-surrounding elastic material 40 are integrated to improve the fit of the diaper around the wearer's legs. be able to. The effect is that the elastic fastening tape 28 arranged on the upper side is fastened in substantially the same direction as the edge of the front body 2 and the elastic fastening tape 28 arranged on the lower side is attached to the edge side of the front body 2 ( This is particularly large when the diaper is fastened upward.

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 100 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[4] Tape type diaper manufacturing method:
Hereinafter, the manufacturing method of the tape type diaper of this invention is demonstrated in the example in the case of manufacturing the tape type diaper 1 shown in FIG. First, the absorbent body 22 and the leg elastic member 40 wrapped in a hydrophilic sheet are placed on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, and the top sheet is further placed on the surface. By placing a long sheet material (top sheet material) as 18 material, a laminate (diaper continuum) as an intermediate body of the diaper is obtained. At this time, as the top sheet material, two types of a top sheet material corresponding to the center sheet 18a and a top sheet material corresponding to the side sheet 18b are used. A three-dimensional gather 26 is formed by providing a folded portion on the sheet material corresponding to the side sheet 18b.

  In the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is cut out in an arc shape and cut (R cut) to form an opening around the leg. Finally, the elastic fastening tape 28 of the present invention is attached to the side edges 6a and 6b of the back body 6 of the diaper, and the continuous diaper is cut into individual diapers, whereby the tape-type diaper 1 is manufactured. At this time, it is preferable that the left and right side edge portions of the back body 6 and the end portions of the elastic fastening tape 28 are joined by fusion such as heat sealing.

  In addition to the above method, an elastic fastening tape is previously attached to the top sheet material, and the absorbent body and leg elastic materials wrapped in a hydrophilic sheet are placed on the surface of the back sheet material. Further, a diaper continuous body may be obtained by placing a top sheet material provided with a stretchable fastening tape on the surface thereof. The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

  The tape-type diaper of the present invention can be suitably used as a diaper for infants or adults such as elderly people and persons with disabilities who need care.

It is a partially cutaway sectional view showing one embodiment of the tape type diaper of the present invention, and is a figure showing the state where the tape type diaper of the present invention was developed and seen from the top sheet side. It is a partially cutaway sectional view showing one embodiment of the conventional tape type diaper, and is a figure showing the state which developed the conventional tape type diaper and was seen from the top sheet side. It is an enlarged view which shows one Embodiment of the tape-type diaper of this invention, and is a figure which expands and shows the stretchable fastening tape part of the tape-type diaper shown in FIG. It is the conceptual diagram which showed typically the effect of the stretchable fastening tape of this invention, and is the conceptual diagram which shows the method of the effect | action of a stretching force. It is the conceptual diagram which showed typically the effect of the conventional elastic fastening tape, and is a conceptual diagram which shows the method of the effect | action of elastic force. It is a perspective view which shows the state which uses the tape-type diaper of this invention. It is sectional drawing of the lamination sheet used for the elastic fastening tape of this invention. It is an enlarged view which shows one Embodiment of the tape-type diaper of this invention, and is a figure which expands and shows the stretchable fastening tape part of a tape-type diaper. It is sectional drawing of the composite sheet used for the elastic fastening tape of this invention. It is a schematic sectional drawing which shows one Embodiment of the elastic fastening tape of this invention. It is a schematic sectional drawing which shows another embodiment of the elastic fastening tape of this invention. It is a schematic sectional drawing which shows another embodiment of the elastic fastening tape of this invention. It is a schematic sectional drawing which shows another embodiment of the elastic fastening tape of this invention. It is a schematic sectional drawing which shows another embodiment of the elastic fastening tape of this invention. It is process drawing which shows one Embodiment of the manufacturing method of the elastic fastening tape of this invention. It is process drawing which shows another embodiment of the manufacturing method of the elastic fastening tape of this invention. It is process drawing which shows another embodiment of the manufacturing method of the elastic fastening tape of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,100: Tape-type diaper, 2: Front body, 4: Crotch part, 6: Back body, 6a, 6b: Side edge, 8: Side flap, 10: Fastening tape, 12: Front patch, 18: Top sheet , 18a: Center sheet, 18b: Side sheet, 20: Back sheet, 22: Absorber, 26, 26a, 26b: Three-dimensional gather, 28: Stretchable fastening tape, 30: Non-stretchable area, 32: Stretchable area, 34 : 36, 36a, 36b: Three-dimensional gather elastic material, 40: Elastic material around leg, 42: Elastic material around waist, 44: Hook material, 46: Standing wire, 48: Base material, 52: Loop material , 54: boundary, 56: stretchable fastening tape, 58: constricted part, 60: non-stretchable sheet, 62: stretchable sheet, 64: stretchable laminated sheet, 68: elastic sheet, 70: coated sheet, 72: en 74: Composite sheet, 76: Non-stretchable sheet, 78: Surface nonwoven fabric sheet, 80: Adhesive for temporary fixing, 82: Long non-stretchable sheet, 84: Long stretchable sheet, 86: Long base sheet , 88: long composite sheet, 90: long hook material, 92: stretchable fastening tape intermediate, 94: valley, 96: side edge, 98: stretchable fastening tape, 102: long surface nonwoven fabric sheet .

Claims (16)

Used to fix the front and back of diapers,
It consists of a base material and a hook material of a mechanical fastener attached to the surface of the base material,
The base material is formed with a non-stretchable region and a stretchable region continuous therewith,
The hook material is attached to the non-stretchable region of the base material,
The elastic fastening tape, wherein the non-stretchable region is formed so as to become wider from the end of the hook material attachment region to which the hook material is attached toward the boundary with the stretchable region. The base material is constituted by a composite sheet in which a non-stretchable sheet that forms the non-stretchable region and a stretchable sheet that forms the stretchable region are joined,
The composite sheet is obtained by joining the stretchable sheets so as to be continuous with the end of the non-stretchable sheet.
The non-stretchable region is formed from a region where only the non-stretchable sheet is disposed and a joint region between the non-stretchable sheet and the stretchable sheet, and the stretchable region is formed from a region where only the stretchable sheet is disposed. The elastic fastening tape according to claim 1. The base material is constituted by a composite sheet in which a non-stretchable sheet that forms the non-stretchable region and a stretchable sheet that forms the stretchable region are joined,
The composite sheet covers a part of the surface of the stretchable sheet, or the non-stretchable sheet is bonded so as to be interposed inside the stretchable sheet,
2. The stretchability according to claim 1, wherein the non-stretchable region is formed only from a bonding region between the non-stretchable sheet and the stretchable sheet, and the stretchable region is formed from a region where only the stretchable sheet is disposed. Fastening tape.   The stretchable fastening tape according to claim 2 or 3, wherein the hook material is attached to a surface of the non-stretchable sheet to which the stretchable sheet is bonded. The stretchable sheet is constituted by a sheet material (surface nonwoven fabric sheet) at least the surface of which is composed of a nonwoven fabric,
The base material is folded so that the hook material is inside in the region closer to the end than the hook material attachment region,
The elastic fastening tape according to any one of claims 2 to 4, wherein the hook member is temporarily fixed to the surface of the surface nonwoven fabric sheet.   A temporary fixing adhesive for temporarily fixing the diaper main body is applied to the surface of the surface nonwoven fabric sheet to which the hook material is temporarily fixed and / or the back surface of the folded base material. 5. The elastic fastening tape according to 5. A long base sheet in which a belt-like non-stretchable region is formed at the center in the width direction and a belt-like stretchable region is formed on both sides of the belt-like non-stretchable region is prepared.
After attaching a band-like long hook material along the longitudinal direction of the sheet on one surface of the non-stretchable region of the long base sheet, the cutting trajectory has a single stretchable region, non-stretchable region, etc. Cut into an S-shaped curve that sequentially passes through the stretchable region, non-stretchable region, and one stretchable region to obtain two stretchable fastening tape intermediates,
A plurality of elastic fastening tapes are obtained by separating between the valleys of the side edges formed in the S-curve shape and the side edges formed in a straight line of each of the elastic fastening tape intermediates. A method for producing an elastic fastening tape.   The manufacturing method of the elastic fastening tape of Claim 7 using the long composite sheet by which the long elastic sheet was joined to the both-sides edge part of a long non-elastic sheet as the said long base material sheet.   The elastic fastening tape according to claim 8, wherein the long composite sheet is obtained by joining the long elastic sheet and attaching the long hook material to one surface of the long non-elastic sheet. Manufacturing method.   The composite sheet in which a long non-stretchable sheet is bonded along the longitudinal direction of the long stretchable sheet so as to cover the center of the long stretchable sheet in the width direction as the long base sheet. The manufacturing method of the elastic fastening tape of 7. As the long stretchable sheet, a long surface nonwoven fabric sheet is used,
Folding the stretchable fastening tape intermediate so that the hook material is inside between the portion where the hook material derived from the long hook material is attached and the side edge formed in a straight line, The hook material is temporarily fixed to the surface of the long surface non-woven fabric sheet, and then the gap between the valley portion of the side edge formed in the S-curve shape and the side edge formed in a straight shape is separated. The method for producing a stretchable fastening tape according to claim 10.   After the temporary fixing, on the surface of the long surface nonwoven fabric sheet temporarily fixed and / or the back surface of the stretchable fastening tape intermediate folded at the time of temporary fixing, with respect to the diaper main body The manufacturing method of the elastic fastening tape of Claim 11 which apply | coats the adhesive for temporary fixing for temporarily fixing. An absorber, a top sheet that is arranged so as to cover the surface of the absorber, and at least partly made of a liquid permeable material, and a back sheet that is arranged so as to cover the back surface of the absorber. And a back sheet
It consists of each part of the front body, the crotch and the back body,
A tape-type diaper arranged to extend from the left and right side edges of the back body, further comprising a fastening tape for fixing the front body and the back body,
The tape-type diaper whose said fastening tape is the elastic fastening tape as described in any one of Claims 1-6.   The tape-type diaper according to claim 13, wherein two stretchable fastening tapes are arranged on each of the left and right side edges of the back body.   The tape-type diaper according to claim 13 or 14, wherein a waist elastic material is attached along an edge of the back body, and a leg elastic material is attached at least along both side edges of the crotch part.   The tape-type diaper according to any one of claims 13 to 15, wherein left and right side edge portions of the back body and a terminal portion of the stretchable fastening tape are joined.

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