JP2019084414A - Open type disposable wearing article - Google Patents

Abstract

An open-type disposable wearing article capable of containing and holding excrement moving toward a waist opening side and suppressing the excrement from touching a wearer's skin. A first waist region (12) of an open-type disposable wearing article (10) includes a waist contact region (31) located on a skin contact surface side and extending in a lateral direction (X), and the waist It has a pocket (20) that faces the contact area in the thickness direction (Z) and is located on the non-skin contact surface side and can be opened to the crotch area (13) side. The pocket has a pocket outer region (23) and a pocket inner region (22), and each of the pocket inner region and the pocket outer region has a waist contact on both lateral sides of the pocket opening. It has a both-side fixing part (26) fixed to a contact area. [Selection] Figure 5

Description

  The present invention relates to an open-type disposable wearing article.

  Heretofore, an open-type disposable wearing article having a front waist area, a rear waist area, a crotch area, and fastener portions located on both sides of the rear waist area is known. For example, Patent Document 1 includes a fastener portion that extends laterally outward from both side edges of the rear waist region, and is worn on the wearer's body by locking the fastener portion to the outer surface of the front waist region. An open disposable wear article is disclosed.

Unexamined-Japanese-Patent No. 10-137292

  In the disposable wearing article disclosed in Patent Document 1, the fastener portion can improve the fit of the front and rear waist regions to the body to prevent leakage of excrement.

  However, in the wearing article of Patent Document 1, fluid excrement such as soft feces is accommodated and held when it diffuses on the skin contact surface of the wearing article and moves to the waist opening side. It can not be done, and there is a risk that the back of the wearer will be soiled by the excreted fluid.

  An object of the present invention is an improvement of a conventional wearing article, which is an open type that can store and hold excrement moving to the waist opening side and can prevent excrement from touching the skin of the wearer. Provision of disposable wearing articles.

  In order to solve the above problems, the present invention has a first waist area which has a longitudinal direction and a lateral direction and is one of the front and rear waist areas, a second waist area which is the other of the front and rear waist areas, A crotch area located between the first and second waist areas, and a pair of fasteners attached to both sides of the first waist area and detachably locking the first and second waist areas. And an open type disposable wearing article.

In the first invention of the present application, the first waist region is a waist contact region extending on the skin contact surface side and extending in the lateral direction, and a waist contact region and a thickness direction in a central portion in the lateral direction And a pocket located on the skin contact surface side and openable to the crotch area side, the pocket having a pocket outer area extending from the crotch area side to the waist opening side, and the pocket outer side Area and the waist contact area are respectively opposed in the thickness direction, and are continuous with the pocket outer area via the laterally extending bent portion, and extend from the bent portion to the crotch region side And a pocket inner area connected to a waist contact area, each of the pocket inner area and the pocket outer area being in contact with the waist on both sides in the lateral direction of the opening of the pocket. At least one of the pocket inner area and the pocket outer area is elastically stretchable, and the contraction rate of the waist contact area in the lateral direction is the pocket It is characterized by being higher than the contraction rate in the transverse direction of each of the inner area and the pocket outer area.
In the second invention of the present application, the first waist region is a waist contact region extending on the skin contact surface side and extending in the lateral direction, and a waist contact region and a thickness direction in a central portion in the lateral direction And a pocket located on the skin contact surface side and openable to the crotch area side, the pocket having a pocket outer area extending from the crotch area side to the waist opening side, and the pocket outer side Area and the waist contact area are respectively opposed in the thickness direction, and are continuous with the pocket outer area via the laterally extending bent portion, and extend from the bent portion to the crotch region side And a pocket inner area connected to a waist contact area, each of the pocket inner area and the pocket outer area being in contact with the waist on both sides in the lateral direction of the opening of the pocket. The first and second waist areas and the crotch area are formed by the chassis, and the waist contact area and the pocket inner and outer area are joined to the chassis It is characterized by being formed by a pocket forming panel.

  The open-type disposable wearing article according to the present invention, in the first waist region, faces the waist contact region located on the skin contact surface side and the waist contact region in the thickness direction, and the non-skin contact surface side Because it has a pocket that can be opened to the crotch area side, excrement moving to the waist opening side can be made to flow into the pocket and be stored and held, so that the excrement can touch the skin. It can be suppressed.

The side view which shows the wearing condition of the open type disposable diaper which is an example of the open type disposable worn article which concerns on this invention. The expanded view of a diaper in the state which extended each elastic body to the longitudinal direction and horizontal direction of a diaper. The disassembled perspective view of a diaper. The figure which looked at the back waist area of the diaper shown in FIG. 1 from upper direction. The perspective view of the back waist area in the wearing condition of a diaper. The typical sectional view which meets a VI-VI line shown in FIG. FIG. 7 is a schematic cross-sectional view taken along the line VII-VII shown in FIG. 5; The disassembled perspective view of a pocket formation panel. (A) A partially broken development plan view of the pocket forming panel. (B) The figure which shows the folding process of a pocket formation panel. (C) The figure which shows the state in which the pocket formation panel was bent along the 1st and 2nd bending line. (D) The figure which shows the state in which the pocket formation panel was bend | folded by the 3rd and 4th bending line. FIG. 5 is a schematic cross-sectional view taken along the line XX shown in FIG. 4.

  The following embodiment relates to the open-type disposable wearing article shown in FIGS. 1 to 10, which is an example of the present invention, and includes not only the essential configuration of the invention but also optional and preferable configurations. In FIG. 2, each elastic body to be described later is stretched to the extent that the gathers produced on the member to which each elastic body is attached appears to be substantially eliminated by natural vision against the contraction force. In a state of

  1 and 2, an open-type disposable diaper 10 shown as an example of the disposable wearing article according to the present invention has a longitudinal direction Y, a transverse direction X, and a thickness direction Z orthogonal thereto. A longitudinal axis P extending along the longitudinal direction Y and dividing the dimension of the diaper 10 in the lateral direction X into two, and a transverse axis Q extending along the transverse direction X and dividing the dimension in the longitudinal direction Y of the diaper 10 into two And is formed substantially symmetrically with respect to the longitudinal axis P. In the present specification, “overlap each other in a plan view of the diaper 10” means that they overlap each other in the thickness direction Z. The diaper 10 has a skin contact surface and a non-skin contact surface opposed thereto, a front waist region (first or second waist region) 11, a rear waist region (first or second waist region) 12, and front and back The rear waist region 12 is formed with a pocket 20 opening toward the crotch region 13. The diaper 10 comprises a chassis 14 in the form of a base, a pair of fasteners 16 provided on both sides of the rear waist area 12 of the chassis 14, and a pocket forming panel 40 attached to the chassis 14 to form the pocket 20. Including.

<Chassis>
The chassis 14 has a front end edge 14a and a rear end edge 14b extending in the lateral direction X and spaced apart in the longitudinal direction Y, and both side edges 14c and 14d extending in the longitudinal direction Y and spaced apart in the lateral direction X The side edges defining the crotch region 13 have a concave shape. The chassis 14 is positioned between the liquid-permeable inner sheet 51 positioned on the skin-contacting surface side, the liquid-impervious outer sheet 52 positioned on the non-skin-contacting surface side, and the inner and outer sheets 51 and 52. And an impervious or impervious leak-barrier sheet 54 positioned between the absorber 53 and the outer sheet 52. On the skin contact surface side of the inner sheet 51, a pair of barrier cuff sheets 55 which are separated in the lateral direction X and extend in the longitudinal direction Y are disposed.

The inner sheet 51 is formed of a liquid non-woven fiber non-woven fabric and covers the entire skin contact surface of the absorber 53. As the inner sheet 51, for example, various known fiber non-woven fabrics such as a hydrophilic spunbond non-woven fabric, a point bond fiber non-woven fabric, or an air through non-woven fabric having a weight of about 15 to 35 g / m ² can be used.

The outer sheet 52 forms the outer shape of the chassis 14 and is formed of a liquid-impervious fibrous non-woven fabric, a plastic film or a laminate sheet thereof. In the case where the outer sheet 52 is formed of a fibrous nonwoven fabric, for example, a spunbonded meltblown spunbonded (SMS) fibrous nonwoven fabric or spunbonded fibrous nonwoven fabric having a weight of about 10 to 30 g / m ² can be used.

  The absorber 53 has a front end edge 53a and a rear end edge 53b extending in the lateral direction X, and both side edges 53c extending in the longitudinal direction Y, and has a liquid absorbent core material and tissue paper covering the core material. And a liquid diffusive covering sheet. As the core material, wood fluff pulp, super absorbent polymer particles, or a mixture thereof can be used. The core material and the covering sheet can be bonded to each other using a known bonding means such as a hot melt adhesive not shown. The absorber 53 only needs to be located at least in the crotch area 13, and in the present embodiment, extends from the crotch area 13 to the front and rear waist areas 11 and 12. It is preferable that the portions of the absorber 53 extending to the rear waist region 12 overlap with the pocket 20 in plan view.

  In the front waist region 11, a front waist elastic body 59 is attached to the skin contact surface side of the outer surface sheet 52 and on the outer side in the longitudinal direction Y of the absorber 53. The front waist elastic body 59 is joined between the outer surface sheet 52 and the inner surface sheet 51 by a known joining means such as a hot melt adhesive not shown. The front waist elastic body 59 extends in the lateral direction X between the side edges 14 c and 14 d of the chassis 14. As the front waist elastic body 59, use may be made of a plurality of string-like or strand-like elastic bodies attached so as to be contractible in the state of stretching in the lateral direction X, an elastic stretchable fiber non-woven sheet containing elastomeric fibers, etc. it can.

  The leak-proof sheet 54 covers the entire non-skin-contacting surface of the absorber 53, and between the covering sheet of the absorber 53 and the outer sheet 52 by a known bonding means such as a hot melt adhesive not shown. It can be joined. The leak-proof sheet 54 may be a impervious, preferably impervious and breathable plastic film to prevent the body fluid absorbed by the absorbent 53 from leaking to the outside of the diaper 10 Can.

  A leg elastic body 57 is attached to the skin contact surface side of the outer sheet 52 and on the outer side of the absorber 53 in the lateral direction X. The leg elastics 57 are joined between the outer surface sheet 52 and the barrier cuff sheet 55 by a known joining means such as a hot melt adhesive not shown. The leg elastics 57 extend in the longitudinal direction Y from the crotch area 13 to the front and rear waist areas 11 and 12. As the leg elastic body 57, it is possible to use a plurality of string-like or strand-like elastic bodies attached so as to be contractible in an elongated state in the longitudinal direction Y, an elastic stretchable non-woven fabric sheet containing elastomeric fibers, etc. . Elastic elastic side flaps having a gasket function are formed on both outer side areas of the absorbent body 53 in the lateral direction X by the leg elastic bodies 57.

The barrier cuff sheet 55 can use, for example, a hydrophobic SMS fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a weight of about 10 to 30 g / m ² . The barrier cuff sheet 55 is fixed to the skin contact surface of the inner sheet 51, and the front fixing portion 81 and the rear fixing portion 82 spaced apart and opposed in the vertical direction Y, and the fixed side (proximal portion) extending in the vertical direction Y 83 and a sleeve-like free side edge (distal edge) 84 located inside the lateral direction X from the fixed side 83. In the free side edge portion 84, a cuff elastic body 58, which is formed of a string-like or strand-like elastic member and extends in the longitudinal direction Y, is attached retractably in an extended state. In the worn state, the elastic elastic body 58 is contracted to separate the free side edge 84 from the inner sheet 51 toward the body of the wearer, thereby forming a pair of leakproof cuffs for preventing lateral leakage of body fluid. Ru.

  The front waist elastic region 85 which is elastically stretchable in the lateral direction X is formed in the front waist region 11 of the chassis 14 by the front waist elastic body 59 described above. In addition, a pocket forming panel 40 having a waist contact area 31 that can be elastically expanded and contracted in the lateral direction X is attached to the rear waist area 12 of the chassis 14. The front and rear waist regions 11 and 12 of the chassis 14 are configured to be connected and separated by fastening means 63 disposed in the fastener portion 16.

<Fastener part>
Referring to FIGS. 1 to 3, the fastener portion 16 has a fixing portion 61 fixed to the side of the chassis 14 and a free portion 62 extending outward from the fixing portion 61 in the lateral direction X, and the fixing portion 61 and a tab sheet 64 forming a free part 62, and a fastening means 63 located in the free part 62 of the tab sheet 64. The fixing portion 61 is located between the outer surface sheet 52 and the barrier cuff sheet 55, and is joined to the respective sheets 52, 55 using a known joining means such as a hot melt adhesive.

The tab sheet 64 can use, for example, a spunbond fiber non-woven fabric, an SMS fiber non-woven fabric, or a laminate sheet thereof having a weight of about 40 to 60 g / m ² . The fastening means 63 includes a base sheet to be joined to the tab sheet 64 and a plurality of hook elements standing from the base sheet, and the material of the fastening means 63 is, for example, an olefin-based material such as polyethylene and polypropylene. Materials, polyester materials and the like can be used. For fixing of the tab sheet 64 and the fastening means 63 and joining between the tab sheet 64 and each sheet, known joining means such as a hot melt adhesive not shown can be used. The fastening means 63 engageably engages with a sheet member (in the present embodiment, the outer surface sheet 52) that forms a loop element located on the non-skin contact surface side of the front waist area 11.

<Pocket>
Referring to FIGS. 1 and 4 to 7, the diaper 10 has a waist contact area 31 that contacts the wearer's body on the waist opening 19 side of the rear waist area 12. The waist contact area 31 has a central portion 32 located substantially at the center in the lateral direction X of the rear waist region 12, and the central portion 32 has an inner end 32a and an outer end 32b. Moreover, the diaper 10 has the pocket 20 located so that the waist contact area 31 may be opposed in the thickness direction Z (front-back direction in a wearing state). The pocket 20 is formed over a predetermined area extending in the lateral direction X around the longitudinal axis P, and can be opened downward (toward the crotch area 13). The pocket 20 is located close to the waist opening 19 of the rear waist region 12.

  The pocket 20 faces the central portion 32 in the thickness direction Z, and extends in the thickness direction Z in the pocket outer area 23 extending from the crotch area 13 to the waist opening 19 side, and the pocket outer area 23 and the waist contact area 31 respectively. The pocket is continuous with the pocket outer area 23 through the bending portion 25 which faces in the lateral direction X and extends downward from the bending portion 25 and is connected to the inner end 32a of the central portion 32 of the waist contact area 31. It is defined by the inner area 22 and the pocket inner areas 24 which are formed from the sides of the pocket inner and outer areas 22 and 23 and are folded inward in the lateral direction X. By connecting the pocket inner area 22 and the central portion 32 of the waist contact area 31, a bent portion 27 bent downward is formed. The both side portions of the pocket inner and outer regions 22 and 23 are overlapped with each other to form pocket side regions 24 and both side fixing portions 26 consisting of portions in the lateral direction X of the pocket side regions 24 are waist contact regions 31. It is fixed to both sides. The side fixing portions 26 extend inward in the lateral direction X from the fixing portions 61 of the pair of fastener portions 16, so the pocket 20 does not have a size that opens between the side edges 14 c and 14 d of the chassis 14. , At least in the central portion of the rear waist region 12.

  The waist contact area 31 is provided with elasticity in at least the lateral direction X by a string-like or strand-like rear waist elastic body 48 described later. Also, in the pocket inner area 22, a string-like or strand-like pocket elastic body 76 extending in the lateral direction X is disposed. In the present embodiment, the pocket elastic body 76 extends in the lateral direction X between the fixing portions 26 on both sides.

  The pocket side areas 24 are folded inward in the lateral direction X (toward the longitudinal axis P). Referring to FIG. 4, in the non-wearing state of the diaper 10, the folded portion 27 and the pocket side areas 24 are opened slightly between the central portion 32 and the pocket 20 in a slightly expanded state. A recess 34 is defined. As long as the pocket side areas 24 are foldably folded, a plurality of bending lines extending in the longitudinal direction Y may be formed by being bent in a plurality including an unintentionally bent portion. The pocket 20 is located on the extension of the absorbent body 53 in the longitudinal direction Y, and the dimensions of the pocket inner area 22 in the lateral direction X by the contraction action of the pocket elastic body 76 and the dimensions of the pocket outer area 23 in the lateral direction X And the inward bending of the extension portion of the side edge 53c of the absorbent body 53 in the pocket side areas 24 causes the pocket side areas 24 to extend in the lateral direction X (toward the longitudinal axis P). It will be in the state of being folded possible.

  In this manner, the pocket 20 is directed (upwardly) to the downward bending portion 27, the pocket side regions 24 folded inward in the lateral direction X, and the waist opening 19. When the waist contact area 31 is extended in the waist circumference direction by having the bent portions 25 and being bent in different directions (three directions) from each other, the pocket side regions 24 are formed. Stands up and moves rearward so that the pocket inner area 22 is separated from the central portion 32 of the waist contact area 31 (see FIG. 5). With reference to FIGS. 6 and 7, the pocket inner area 22 is inclined with respect to the central portion 32, and the inclination angle α with respect to the central portion 32 increases as it moves backward. Therefore, as the inclination angle α is larger, the pocket inner area 22 is in a collapsed state and serves as a top surface of the pocket 20, and the pocket 20 accommodates and holds a relatively large amount of excrement therein. It has a box shape having a pocket space (housing space) S that can be

<Pocket forming panel>
Referring to FIGS. 3, 8 and 9 (a), the pocket forming panel 40 has an inner edge 40a and an outer edge (rear waist opening edge) 40b extending in the lateral direction X, and between the inner and outer edges 40a and 40b. And a second surface 70B (non-skin contact surface) located on the opposite side of the first surface 70A (skin contact surface) and a horizontally long rectangular shape defined by both side edges 40c extending in the vertical direction Y in , A first fold line 41 and a second fold line 42 extending parallel to the lateral direction X. The pocket forming panel 40 has an outer end 43 located between the outer edge 40 b and the first fold line 41, and an intermediate part 44 located between the first fold line 41 and the second fold line 42, It has an inner end 45 located between the second fold line 42 and the inner end edge 40a. On the second surface 70B side of the outer end portion 43, a pair of first bonding areas 71A located opposite to each other in the lateral direction X is located, and a first non-bonding area 71B is located therebetween. On the first surface 70A side of the intermediate portion 44, a pair of second bonding areas 72A located opposite to each other in the lateral direction X are located, and a second non-bonding area 72B is located therebetween.

  The pocket forming panel 40 is disposed at the outer end portion 43 and extends in the lateral direction X, the inner surface sheet 46 located on the skin contact surface side, the outer surface sheet 47 located on the non-skin contact surface side, and the inner and outer surface sheets A plurality of string-like or strand-like rear waist elastic members 48 fixed in a contractible manner in a stretched state between 46 and 47, and arranged in the middle portion 44 and extending in the transverse direction X, between the inner and outer sheet 46, 47 And a string-like or strand-like pocket elastic body 76 fixed in a contractable manner in a stretched state. A liquid-impervious sheet 75 is further disposed between the inner and outer sheets 46 and 47. The liquid-impervious sheet 75 is preferably made of a breathable fibrous non-woven fabric or a plastic film, and is located at least at the inner end 45 and the middle portion 44. The pocket-forming panel 40 made of a fiber non-woven fabric alone can not sufficiently hold soft stool with high flowability, and there is a risk of exuding on the outer surface thereof. It can prevent the exudation of such soft stools. The liquid-impervious sheet 75 is disposed in the formation area of the pocket 20 in the pocket forming panel 40, and is larger than the dimension in the lateral direction X of the opening of the pocket 20 (that is, the dimension in the lateral direction X of the second non-bonded area 72B). It is preferable to have the dimension in the lateral direction X in order to more effectively prevent the exudation of body fluid.

  Referring to FIGS. 9B and 9C, in the pocket forming panel 40, the second surface 70B side of the outer end portion 43 and the second surface 70B side of the middle portion 44 mutually extend along the first folding line 41. It is bent so that it abuts, and is folded so that the first surface 70A side of the intermediate portion 44 and the first surface 70A side of the inner end 45 abut each other along the second bending line 42 By being bent, the substantially Z-shaped bent state is maintained in the longitudinal cross section.

  The outer end portion 43 and the middle portion 44 are bonded to each other in the first bonding area 71A, and the middle portion 44 and the inner end portion 45 are bonded to each other in the second bonding area 72A. The dimensions of the first bonding area 71A and the second bonding area 72A are substantially equal to each other in the lateral direction X, and the sizes in the lateral direction X of non-bonded areas 71B and 72B positioned therebetween are also approximately equal. The first and second non-joining areas 71B and 72B overlap with each other in a plan view of the diaper 10. The first and second bonding areas 71A and 72A are formed, for example, by applying a known adhesive such as a hot melt adhesive or by a known heat welding method such as heat sealing.

  Referring to FIG. 9 (d), the pocket forming panel 40 has the outer end 43 contracted by the rear waist elastic body 48 and is folded along the first and second folding lines 41 and 42 to form the first and second pocket A pair of third portions extending in the longitudinal direction Y along the side edge of the second non-joining area 72B from the state joined via the second joint areas 71A and 72A, the intermediate portion 44 and the inner end 45 stacked together By further bending along the folding line 49A and the fourth folding line (peak folding line) 49B, the portion excluding the outer end portion 43 has a substantially Ω-shaped cross section.

  Referring to FIGS. 2, 6, 7, and 9, a junction area (third junction area) in which the pocket forming panel 40 bent to have a substantially Ω-shaped cross section is located on the second surface 70 </ b> B side of the inner end 45. ) 73 is fixed to the skin contact surface side of the chassis 14. Thus, by fixing the pocket forming panel 40 in a folded state by the plurality of bending lines, the waist contact area 31 of the rear waist area 12 by the outer end 43 and the pocket inner area 22 by the middle 44, The pocket outer area 23 is formed by the portion of the inner end 45 facing the middle portion 44 respectively. Moreover, it joins in the state which the both sides of pocket inner area 22 and the both sides of pocket outer area 23 mutually overlapped via the 2nd junction area 72A, and the 2nd non junction area 72B of middle part 44, inner end A pocket 20 is formed by the 45 second non-junction areas 72B.

  In the present embodiment, the pocket 20 and the like are formed by fixing the separately formed pocket forming panel 40 to the chassis 14. However, as long as the technical effects of the present invention can be achieved, the pocket forming panel 40 is a chassis 14 The waist contact area 31 may be formed of the same sheet member as that of the chassis 14 and may be a separate sheet member to the waist contact area 31. May be fixed to form the pocket 20. Alternatively, the pocket forming panel 40 may be formed of a single elastic non-woven fiber nonwoven sheet, and instead of the rear elastic waist body 48, an elastic non-woven fibrous non-woven sheet is disposed between the inner and outer sheet 46, 47. You may Therefore, in the present specification, for example, “the pocket inner area 22 is connected to the inner end 32 a of the central part 32 of the waist contact area 31” means that the central part 32 and the pocket inner area 22 are the same sheet member The case where it forms and it bends in the bending part 27 and the case where they are formed from a separate sheet member and both sheet members are connected in the bending part 27 are included.

  Usually, relatively low-aged infants excrete flexible soft stools in various situations such as breastfeeding and the mother's holding posture, so that soft stools may leak from the rear waist opening or the back of the wearer. There is a risk that loose stools will be pressed against In particular, in the rear waist region 12, such a gap is difficult to be formed because of the projecting outer shape of the buttocks, and in order to temporarily store and hold excrement, like the diaper 10 according to the present embodiment, It is necessary to form intentionally the pocket space S which exhibits a three-dimensional shape in a wearing condition.

  In the present embodiment, the waist contact area 31 and the pocket 20 are located on the waist opening side of the rear waist area 12, and the waist contact area 31 is fitted to the wearer's body by the contraction force of the rear waist elastic body 48. Therefore, leakage of excrement that has moved from the crotch area 13 to the rear waist opening side is prevented, and excrement whose movement is blocked flows into the upwardly extending pocket space S, temporarily Contained and held. In this manner, by causing the excrement whose movement is inhibited to enter the pocket 20 located on the back side of the rear waist area 12, it is possible to suppress the discomfort and the skin trouble due to the excrement coming into contact with the body. . Since the pocket 20 does not directly interlock with the expansion and contraction of the waist contact area 31, there is no possibility that the opening of the pocket 20 will close even if the rear waist area 12 is extended. In addition, the rear end edge 53b of the absorber 53 is preferably at a position overlapping with the pocket 20 in plan view, and this configuration ensures that the excrement that has not been absorbed by the absorber 53 has moved to the rear waist opening side. Can be housed in the pocket 20. Further, the liquid-impervious sheet 75 can make excrement stored in the pocket 20 less likely to be visually recognized in appearance.

  In the non-wearing state of the diaper 10, the pocket side areas 24 of the pocket 20 are folded in a substantially V-shaped cross section toward the longitudinal axis P, while in the wearing state, the pocket side areas 24 stand up A pocket space S is formed by separating the pocket inner area 22 from the central portion 32 of the waist contact area 31. In the non-wearing state of the diaper 10, the rear waist region is formed by having a mode in which the pocket side regions 24 are folded in and the central portion 32 of the waist contact region 31 and the pocket inner region 22 come into contact with each other. 12 as the whole becomes more compact, and the dimension in the thickness direction Z becomes smaller than in the worn state, so the storability of the plurality of diapers 10 and the convenience at the time of transportation are excellent.

  In addition, even when the wearer is in a supine state and the wearer's physical pressure is applied to the pocket 20, the central portion 32 of the waist contact area 31 and the pocket have a mode in which the pocket side areas 24 are folded. Since the inner region 22 and the inner region 22 are in contact with each other, the pocket forming panel 40 is deformed into a strain by body pressure to give the wearer a foreign body feeling caused by a change in partial thickness in the rear waist region 12. There is no fear. Since the pocket side areas 24 move in a direction toward and away from the wearer's body, ie, in the thickness direction Z, the pocket side areas 24 move away from the body when the body pressure is released. Standing up (see FIG. 5), a three-dimensional pocket space S is formed again.

  In particular, in the open-type disposable diaper 10, the wearer is supine when the diaper 10 is worn, and the pocket 20 is crushed in the thickness direction Z by the physical pressure of the wearer. In the diaper 10 of the present embodiment, by forming the pocket side areas 24 capable of bending and stretching movement in the pocket 20, after the diaper 10 is attached, the pocket side areas 24 stand up to form the pocket space S stably. Can. As described above, since the pocket 20 can stably and repeatedly exhibit a three-dimensional shape by the bending and stretching motion of the pocket both-sides area 24, the low-aged infants who frequently change their postures or frequently repeat soft stools wear Even in this case, the soft stool can be reliably accommodated in the pocket space S. Further, as described above, since the pocket inner area 22 has the required dimension in the longitudinal direction Y, the pocket side area 24 is inclined to move backward with respect to the central portion 32 by raising the pocket 20. Since it can play a role as a top surface, more excrement can be accommodated compared with the aspect which does not have the bending structure by the top surface and the pocket both-sides area 24 side.

  Furthermore, a pair of fasteners 16 are attached to both sides of the chassis 14 in the rear waist area 12 so that the fixing parts 61 of the fasteners 16 overlap the pockets 20 and the waist contact area 31 in the lateral direction X. It is located outside the lateral direction X of the pocket 20. In the diaper 10, when the fastening means 63 of the fastener portion 16 is engaged with the front waist region 11, the fastener portion 16 is easily interlocked with the expansion and contraction of the waist contact region 31. , 12 fit is improved. In order to further improve the fit, at least a portion of the fixing portion 61 is in the thickness direction with the both side fixing portions 26 of the pocket inner and outer regions 22 and 23 (that is, regions overlapping with the waist contact region 31 in plan view) It is preferable to overlap at Z. Referring to FIG. 2, since the waist contact area 31 overlaps with the fastening means 63 in the lateral direction X, when the fastening means 63 is engaged, the waist contact area 31 and the body contact with each other. A gap can be suppressed from occurring, and waste can be prevented from leaking out from the waist contact area 31, and the waste can be induced to be contained inside the pocket 20.

  In addition, since the pocket inside and outside areas 22 and 23 are fixed to the waist contact area 31 at the both side fixing parts 26, it is easy to form a three-dimensional shape in conjunction with the contraction of the waist contact area 31. Even when the waist contact area 31 is extended in the lateral direction X in the worn state, the amount of contraction in the lateral direction X of the waist contact area 31 including the central portion 32 in order for the pocket 20 to have a three-dimensional shape Preferably, the length dimension in the transverse direction X of the contracted portion is larger than the amount of contraction in the transverse direction X of the pocket inner area 22 and / or the pocket outer area 23. In such a case, for example, even when the waist contact area 31 is expanded by a predetermined factor in the lateral direction X as compared with the natural state (during contraction), the pocket both side areas 24 are not completely collapsed, and the pocket 20 can maintain a three-dimensional shape.

  Therefore, while elastic body is arranged in the waist contact area 31 in the lateral direction X, no elastic body is arranged in the pocket inner area 22 and / or the pocket outer area 23, and it is substantially elastic. It is preferable to make it non-stretchable. In the diaper 10 according to the present embodiment, the pocket elastic body 76 capable of stretching in the lateral direction X is disposed in the pocket inner area 22, and the pocket elastic body 76 contracts more than the rear waist elastic body 48 disposed in the central portion 32. The rate is low. When the pocket elastic body 76 which can extend in the lateral direction X is disposed in the pocket inner area 22 in this manner, when the central portion 32 is extended and a force acts on the pocket both side areas 24 to fall it. Since the elastic body maintains the standing state of the pocket side areas 24 against the force and the state where the pocket inner area 22 is separated from the central portion 32, the pocket 20 can more stably exhibit a three-dimensional shape. it can. Furthermore, when both the pocket inner and outer regions 22 and 23 have elastic stretchability, the contraction rate in the lateral direction X of the pocket inner region 22 is the lateral direction of the pocket outer region 23 in order to form the pocket 20 stably. It is preferable that the contraction rate in X be higher.

  In the diaper 10 of the present embodiment, in the joint area 73 between the chassis 14 and the pocket forming panel 40, the chassis 14 is elastically non-stretchable, and in the area overlapping the pocket 20 in the thickness direction Z, the waist contact area 31 The contraction rate of the joint region 73 is higher than the contraction rate of the bonding area 73. Therefore, the pocket 20 can easily maintain its three-dimensional shape without the pocket side areas 24 being collapsed. Furthermore, due to the rigidity of the chassis 14 joined to the inner end 45 of the pocket forming panel 40 via the joining area 73, the pocket outer area 23 has a relatively high stiffness, which suppresses distortions, and the pocket space S can be formed stably. In addition, in order to further improve the effect, a sheet-like rigidity imparting member (not shown) may be disposed in at least one of the pocket inner area 22 and the pocket outer area 23. For example, it is preferable to use a member having resilience, such as urethane foam, as the rigidity imparting member.

  Although not shown, one or more deformation guiding portions extending in the longitudinal direction Y may be formed on the absorber 53 located in the rear waist region 12. The deformation guiding portion is for bending the absorber 53 along the shape of the buttocks, and, for example, reduces the mass per unit area of the core material in the absorber 53 compared to the non-arrangement region of the deformation guiding portion It can be formed by By forming such a deformation guiding portion, it is possible to further expand the opening of the pocket 20 and form a pocket space S that is three-dimensional and easy to accommodate excrement.

  Further, it is preferable that the contraction rate in the lateral direction X of the waist contact area (rear waist elastic area) 31 is higher than the contraction rate in the lateral direction X of the front waist elastic area 85. Such setting of the contraction rate can be adjusted, for example, by making the contraction rate of the elastic body disposed in the front waist elastic region 85 lower than the contraction rate of the elastic body disposed in the waist contact region 31. The front waist elastic area 85 is opposed to the waist contact area 31 in the front-rear direction of the worn state, and the target 63 can be engaged with the fastening means 63 of the fastener portion 16 and elastically extendable in the lateral direction X Form In the diaper 10, the fitting property is improved when the fastening means 63 is engaged with the target area in the wearing state, and the contraction force of the waist contact area 31 compared to the front waist elastic area 85 in the waist circumference direction. The opening of the pocket 20 can be easily opened, and the pocket space S can be stably formed. Such an elastic target area is formed by arranging a sheet member having a loop element which is elastically expandable in the lateral direction X in the front waist area 11 instead of the front waist elastic body 59. You may

<Measurement method of contraction rate in each area>
First, in the unfolded state of the diaper 10, a predetermined width of the laminated area of the pocket outer area 23 and the waist contact area 31 overlapping each other in plan view with the pocket inner area 22 (arrangement area of pockets surrounded by broken line K in FIG. 2) The dimensions of each sample were measured according to the following procedure as samples and cut out with a size of, for example, a vertical dimension of 15 mm × a horizontal dimension of 100 mm. i) grasp one end of opposite ends in the lateral direction X of each sample, and ii) attach a clip and a weight to the other end so that each sample is perpendicular to the floor surface without twisting. It hung so as to become. In such a state, in the arrangement area of the elastic element (in the case where there is no elastic element, at a predetermined position of the sheet), two portions opposed in the lateral direction X are marked with ink etc. It measured and made it the dimension at the time of shrinkage (L1) of each sample. The weight of the weight can be adjusted as long as the elastic element disposed in each sample is not stretched. In this measurement, a weight of about 5.0 g was used. iii) Next, remove the clip and weight from each sample, extend in the transverse direction X until the surface is free of gathers by the elastic element, and then measure the separation dimension of the two marks, L2). The shrinkage rate (%) of each sample was calculated by applying the dimensions L1 and L2 measured by this measurement method to the equation of shrinkage rate = ((L2−L1) / L2) × 100 (%). The contraction rate of the front waist elastic region 85 has a predetermined width in a region overlapping the waist contact region 31 in the front-rear direction in the wearing state (a region overlapping the area surrounded by the broken line K in FIG. 2 in the front-rear direction of the wearing state) It cut out by size and made it a sample.

  With reference to FIG. 2, the pocket forming panels 40 forming the pockets 20 are located outside the leg elastics 57 and the cuff elastics 58 in the longitudinal direction Y and do not overlap them with each other in a plan view of the diaper 10. . Therefore, even if the contraction force of the leg elastic body 57 or the cuff elastic body 58 indirectly acts on the pocket outer area 23 to pull it downward, the pocket outer area 23 is pulled downward. There is no possibility that the fold 25 will collapse and the pocket space S will disappear.

  Referring to FIG. 6, as described above, the pocket forming panel 40 forming the pocket 20 is a sheet member separate from the chassis 14 forming the outer shape of the diaper 10, and the chassis 14 is the pocket 20 in plan view. The central portion 32 of the waist contact area 31 does not lose its stretchability due to the rigidity of the chassis 14 because it is bonded to the elastic non-stretchable pocket outer area 23 at the overlapping portions with each other. , Is excellent in fit. Also, by using the pocket forming panel 40 bent in a substantially Z shape in the longitudinal cross section as a separate member from the chassis 14, the sheet members constituting the chassis 14 are transported in the longitudinal direction Y when the diaper 10 is manufactured. The diaper 10 can be produced continuously by the “longitudinal flow production method”, and the productivity is excellent. The pocket forming panel 40 is located inward of the rear end 14b of the chassis 14 in the longitudinal direction Y, that is, the outer edge 40b of the pocket forming panel 40 and the fold of the pocket 20 in order to enhance the continuous production by the vertical flow method. It is preferable that the curved portion 25 be located inside the rear end edge 14 b of the chassis 14 in the longitudinal direction Y. In such a diaper 10, the folded pocket-forming panel 40 is covered by the chassis 14 in an appearance view, so that the appearance is excellent.

  Referring to FIGS. 5 and 9, since the central portion 32 and the pocket 20 are formed from the pocket forming panel 40 and the dimension of the sheet member forming them in the lateral direction X is the same, the central portion 32 is By shrinking under the influence of the rear waist elastic body 48, even if the elastic body is not disposed in the pocket inner area 22, the dimension in the lateral direction X of the pocket inner area 22 connected to the inner end 32a at the bending portion 27 Is shrunk. Thereby, the pocket inner area 22 is formed with a plurality of gathers 78 extending in the longitudinal direction Y. Thus, by forming the plurality of gathers 78 extending in the longitudinal direction Y, they function like a rib to improve the rigidity in the lateral direction X and the longitudinal direction Y of the pocket inner area 22, and the pocket 20 Can stably form a box-like three-dimensional shape. Although not shown, in the front waist area 11, a pocket which can be opened downward similarly to the rear waist area 12 may be arranged to temporarily store and hold urine.

  With respect to each constituent material constituting the diaper 10 of the present invention, various known materials generally used in this type of field can be used without limitation, unless otherwise specified. Although the front waist elastic body 59 is disposed in the front waist region 11 in the present embodiment, a configuration in which the elastic body that can be expanded and contracted in the lateral direction X in the front waist region 11 may not be disposed. Also, the terms "first", "second" and the like as used herein are used merely to distinguish similar elements, positions and the like.

The disclosure of the present invention described above can be organized at least into the following items.
According to a first aspect of the present invention, there is provided a first waist area having a longitudinal direction and a lateral direction, which is one of the front and rear waist areas, a second waist area which is the other of the front and rear waist areas, and the first and second waists. An open type including a crotch area located between the areas and a pair of fasteners attached to both sides of the first waist area and detachably locking the first waist area and the second waist area. In the disposable wearing article, the first waist region is a waist contact region extending on the skin contact surface side and extending in the lateral direction, and a central portion in the lateral direction in the waist contact region and thickness direction A pocket located opposite to the skin contact surface side and openable to the crotch region side, the pocket having a pocket outer region extending from the crotch region side to the waist opening side, and the pocket outer region When It is opposed to the waist contact area in the thickness direction and is continuous with the pocket outer area via the laterally extending bent portion, and extends from the bent portion to the crotch region side to contact the waist The pocket inner area and the pocket inner area connected to the contact area, each of the pocket inner area and the pocket outer area has both side fixing parts fixed to the waist contact area on both sides in the lateral direction of the opening of the pocket And at least one of the pocket inner area and the pocket outer area is elastically stretchable, and the contraction ratio of the waist contact area in the lateral direction is equal to that of each of the pocket inner area and the pocket outer area. It is higher than the contraction rate in the lateral direction.
According to a second aspect of the present invention, there is provided a first waist area having a longitudinal direction and a lateral direction, which is one of the front and rear waist areas, a second waist area which is the other of the front and rear waist areas, and the first and second waists. An open type including a crotch area located between the areas and a pair of fasteners attached to both sides of the first waist area and detachably locking the first waist area and the second waist area. In the disposable wearing article, the first waist region is a waist contact region extending on the skin contact surface side and extending in the lateral direction, and a central portion in the lateral direction in the waist contact region and thickness direction A pocket located opposite to the skin contact surface side and openable to the crotch region side, the pocket having a pocket outer region extending from the crotch region side to the waist opening side, and the pocket outer region When It is opposed to the waist contact area in the thickness direction and is continuous with the pocket outer area via the laterally extending bent portion, and extends from the bent portion to the crotch region side to contact the waist The pocket inner area and the pocket inner area connected to the contact area, each of the pocket inner area and the pocket outer area has both side fixing parts fixed to the waist contact area on both sides in the lateral direction of the opening of the pocket The first and second waist areas and the crotch area are formed by a chassis, and the waist contact area and the pocket inside and outside area are formed by a pocket forming panel joined to the chassis.

The disposable wearing article according to the present invention disclosed in the above paragraph 0052 can include at least the following embodiments.
(1) The pocket is formed of both sides of the pocket inner area and both sides of the pocket outer area, and further includes the pocket inner side area folded inward in the lateral direction.
(2) The absorbent article further includes an absorbent body extending from the crotch region to the first and second waist regions, and the pocket is located on an extension of the absorbent body in the longitudinal direction.
(3) The waist contact area is elastically stretchable in the lateral direction.
(4) The waist contact area is located between the fastening means of the pair of fasteners, and is positioned to overlap the fastening means in the lateral direction.
(5) The two measuring and fixing portions overlap with the fastener portion in the lateral direction.
(6) The pocket-forming panel is located inside the longitudinal edge of the chassis.
(7) The chassis has a junction area to which the pockets are joined, and the contraction rate of the waist contact area in the lateral direction is higher than the contraction rate of the junction area in the lateral direction.
(8) The second waist area has a target area in which the fastener portion can be engaged and removed elastically in the lateral direction, and the contraction rate in the lateral direction of the waist contact area is The contraction rate in the lateral direction of the target area is higher.

DESCRIPTION OF REFERENCE NUMERALS 10 disposable diaper 11 front waist area 12 rear waist area 13 crotch area 14 chassis 16 fastener part 20 pocket 22 pocket inside area 23 pocket outer area 24 pocket both side area 25 bent part 26 both side fixing part of pocket 31 waist contact area 32 waist Middle part 40 of contact area Pocket forming panel 53 Absorber 63 Fastening means X Horizontal direction Y Vertical direction

The first invention of the present application further includes a chassis that forms the first and second waist regions and the crotch region, and the first waist region is located on the skin contact surface side and extends in the lateral direction. A waist contact area, and a pocket opposite to the waist contact area in the thickness direction at the center in the lateral direction and located on the skin contact surface side and openable to the crotch area side; The pocket is opposed to the pocket outer side area extending from the crotch area side to the waist opening side, the pocket outer side area and the waist contact area in the thickness direction and through the laterally extending bent portion wherein with continuous pocket outer region, wherein extending from the bent portion to the crotch region side have a pocket inner zone connected to the waist contact region, said pocket outer zone structure of the chassis Te To be formed in the sheet member integral with the seat, one of which at least said pocket inner region and said pocket outer zone is elastically stretchable, shrinkage in the transverse direction of the waist contact region is, the It is characterized by being higher than the contraction rate in the above-mentioned cross direction of each of a pocket inner side area and the pocket outer side area.
The second invention of the present application further includes a chassis forming the first and second waist areas and the crotch area, and the first waist area is located on the skin contact surface side and extends in the lateral direction. A waist contact area, and a pocket opposite to the waist contact area in the thickness direction at the center in the lateral direction and located on the skin contact surface side and openable to the crotch area side; The pocket is opposed to the pocket outer side area extending from the crotch area side to the waist opening side, the pocket outer side area and the waist contact area in the thickness direction and through the laterally extending bent portion And a pocket inner area extending from the bent portion toward the crotch area and connected to the waist contact area, the pocket outer area forming the chassis The waist contact area and the pocket inner area are separated in the front-rear direction in the wearing state, and the upper end of the pocket is higher than the upper end of the waist contact area. The lower surface is characterized in that the back of the waist contact area is exposed to the outside .

The disclosure of the present invention described above can be organized at least into the following items.
According to a first aspect of the present invention, there is provided a first waist area having a longitudinal direction and a lateral direction, which is one of the front and rear waist areas, a second waist area which is the other of the front and rear waist areas, and the first and second waists. An open type including a crotch area located between the areas and a pair of fasteners attached to both sides of the first waist area and detachably locking the first waist area and the second waist area. The disposable wearing article further includes a chassis that forms the first and second waist areas and the crotch area, and the first waist area is located on the skin contact surface side and extends in the lateral direction. A contact area, and a pocket opposite to the waist contact area in the thickness direction at the center in the lateral direction and located on the skin contact surface side and openable to the crotch area; The pocket is The pocket outer region extending from the Roch region side to the waist opening side, and the pocket outer region and the waist contact region respectively face each other in the thickness direction, and the laterally extending pocket outer region with continuous and, the folding extending from the curved portion to the crotch region side have a pocket inner zone connected to the waist contact region, said pocket outer zone is formed by a sheet integral with the sheet member constituting the chassis And at least one of the pocket inner area and the pocket outer area is elastically stretchable, and the contraction ratio of the waist contact area in the lateral direction is equal to that of the pocket inner area and the pocket outer area. The contraction rate in the lateral direction of
According to a second aspect of the present invention, there is provided a first waist area having a longitudinal direction and a lateral direction, which is one of the front and rear waist areas, a second waist area which is the other of the front and rear waist areas, and the first and second waists. An open type including a crotch area located between the areas and a pair of fasteners attached to both sides of the first waist area and detachably locking the first waist area and the second waist area. The disposable wearing article further includes a chassis that forms the first and second waist areas and the crotch area, and the first waist area is located on the skin contact surface side and extends in the lateral direction. A contact area, and a pocket opposite to the waist contact area in the thickness direction at the center in the lateral direction and located on the skin contact surface side and openable to the crotch area; The pocket is The pocket outer region extending from the Roch region side to the waist opening side, and the pocket outer region and the waist contact region respectively face each other in the thickness direction, and the laterally extending pocket outer region And a pocket inner area extending from the bent portion toward the crotch area and connected to the waist contact area, wherein the pocket outer area is formed of a sheet integral with a sheet member constituting the chassis. And in the wearing state, the waist contact area and the pocket inner area are separated in the front-rear direction, and the upper end of the pocket is positioned lower than the upper end of the waist contact area; The back of the area is exposed to the outside .

The disposable wearing article according to the present invention disclosed in the above paragraph 0052 can include at least the following embodiments.
(1) A liquid-impervious sheet is disposed in at least the pocket inner region of the pocket inner and outer regions.
(2) The absorbent article further includes an absorbent body extending from the crotch region to the first and second waist regions, and the pocket is located on an extension of the absorbent body in the longitudinal direction.
(3) The waist contact area is elastically stretchable in the lateral direction.
(4) The waist contact area is located between the fastening means of the pair of fasteners, and is positioned to overlap the fastening means in the lateral direction.

Claims (10)

A crotch region located between the first and second waist regions, the first waist region having one of the front and rear waist regions, having a longitudinal direction and a lateral direction, and the second waist region being the other of the front and rear waist regions And an open type disposable wearing article including a pair of fastener portions attached to both sides of the first waist area and detachably locking the first waist area and the second waist area.
The first waist region faces the waist contact region, which is located on the skin contact surface side and extends in the lateral direction, and the waist contact region in the thickness direction at the central portion in the lateral direction. A pocket located on the facing side and openable to the crotch region side;
The pocket is opposed to the pocket outer side area extending from the crotch area side to the waist opening side, the pocket outer side area and the waist contact area in the thickness direction and through the laterally extending bent portion And a pocket inner area extending from the bent portion toward the crotch area and connected to the waist contact area;
Each of the pocket inner area and the pocket outer area has a double-sided fixing part fixed to the waist contact area on both sides in the lateral direction of the opening of the pocket,
At least one of the pocket inner area and the pocket outer area is elastically stretchable, and the contraction rate of the waist contact area in the lateral direction is equal to the width of each of the pocket inner area and the pocket outer area. Said worn article characterized in that it has a higher shrinkage than in direction. A crotch region located between the first and second waist regions, the first waist region having one of the front and rear waist regions, having a longitudinal direction and a lateral direction, and the second waist region being the other of the front and rear waist regions And an open type disposable wearing article including a pair of fastener portions attached to both sides of the first waist area and detachably locking the first waist area and the second waist area.
The first waist region faces the waist contact region, which is located on the skin contact surface side and extends in the lateral direction, and the waist contact region in the thickness direction at the central portion in the lateral direction. A pocket located on the facing side and openable to the crotch region side;
The pocket is opposed to the pocket outer side area extending from the crotch area side to the waist opening side, the pocket outer side area and the waist contact area in the thickness direction and through the laterally extending bent portion And a pocket inner area extending from the bent portion toward the crotch area and connected to the waist contact area;
Each of the pocket inner area and the pocket outer area has a double-sided fixing part fixed to the waist contact area on both sides in the lateral direction of the opening of the pocket,
The first and second waist areas and the crotch area are formed by a chassis, and the waist contact area and the pocket inside and outside area are formed by a pocket forming panel joined to the chassis. The said wearing article.   The wear article according to claim 1 or 2, wherein the pocket is formed from both sides of the pocket inner area and both sides of the pocket outer area, and further includes the pocket inner side area folded inward in the lateral direction. .   The wear article according to any one of claims 1 to 3, further comprising an absorbent body extending from the crotch area to the first and second waist areas, wherein the pocket is located on an extension of the absorbent body in the longitudinal direction. .   The wearing article according to any one of claims 1 to 4, wherein the waist contact area is elastically stretchable in the lateral direction.   The wearing article according to any one of claims 1 to 5, wherein the waist contact area is positioned between the fastening means of the pair of fasteners, and overlaps the fastening means in the lateral direction.   The wearing article according to any one of claims 1 to 6, wherein the both-side fixing portion is positioned to overlap the fastener portion in the lateral direction.   The wearing article according to claim 2, wherein the pocket forming panel is located inside the edge in the longitudinal direction of the chassis.   The chassis according to claim 2 or 8, wherein the chassis has a junction area to which the pockets are joined, and the contraction rate in the lateral direction of the waist contact area is higher than the contraction rate in the lateral direction of the joint area. Wearing items. The second waist region has a target region in which the fastener portion is detachable and which is elastically extensible and contractible in the lateral direction.
The wearing article according to any one of claims 1 to 9, wherein the contraction rate in the lateral direction of the waist contact area is higher than the contraction rate in the lateral direction of the target area.

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