WO2016157943A1

WO2016157943A1 - Disposable wearable article

Info

Publication number: WO2016157943A1
Application number: PCT/JP2016/051309
Authority: WO
Inventors: 瀧野　俊介; 秀晃槇; 井上　拓也
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-03-30
Filing date: 2016-01-18
Publication date: 2016-10-06
Also published as: CN107405220B; CN107405220A; JP6498988B2; JP2016187510A

Abstract

Provided is a disposable wearable article that can store and retain bodily waste that moves toward the waist opening and inhibit the bodily waste from contacting the skin of the wearer. A first waist region (12) of a disposable wearable article (10) comprises: an area in contact with the waist (31) that is positioned on the side in contact with the skin and that extends in the lateral direction (X); and a pocket (20) that is opposite, in the thickness direction (Z), the area in contact with the waist, that is positioned on the side not in contact with the skin, and that can open to a crotch area (13). The pocket comprises a pocket exterior area (23) and a pocket interior area (22), and both the pocket interior area and the pocket exterior area each have end fixing portions (26) that are fixed to the area in contact with the waist at both ends in the lateral direction of the pocket opening.

Description

Disposable wearing items

This disclosure relates to disposable wearing articles.

Conventionally, disposable wearing articles having a front waist region, a rear waist region, a crotch region, and fastener portions located on both sides of the rear waist region are known. For example, Patent Document 1 includes a fastener portion extending 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. Disposable wearing articles are disclosed.

JP 10-137292 A

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

However, in the worn article of Patent Document 1, when fluid excrement such as loose stool diffuses on the skin contact surface of the worn article and moves to the waist opening side, it can be accommodated and held. The back of the wearer may become dirty due to fluid excretion.

An object of the present invention according to the present disclosure is an improvement of a conventional wearing article, which contains and holds excrement moving to the waist opening side and suppresses excrement from touching the skin of the wearer. It is in the provision of the disposable wearing article which can be used.

In order to solve the above-mentioned problems, the present invention has a first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, A pair of fastener portions that are attached to both side portions of the crotch region located between the first and second waist regions and the first waist region and detachably engage the first waist region and the second waist region. It is related with the disposable wearing article containing these.

In the disposable wearing article according to the present invention, the first waist region is located on the skin contact surface side and extends in the lateral direction, and the waist contact region and the thickness in the central portion in the lateral direction. A pocket facing in the vertical direction and opening to the crotch region side located on the non-skin contact surface side, the pocket extending from the crotch region side to the waist opening side, and the pocket outer region, The pocket outer area and the waist contact area are opposed to each other in the thickness direction, and are connected to the pocket outer area via a bent part extending in the lateral direction, and extend from the bent part to the crotch area side. A pocket inner area connected to the waist abutment area, and each of the pocket inner area and the pocket outer area is provided on both lateral sides of the opening of the pocket. Having both side fixing portion fixed to the waist abutment area to have.

The disposable wearing article according to one or more embodiments of the present invention has a waist contact region located on the skin contact surface side in the first waist region, and a waist contact region facing the waist contact region in the thickness direction, and non-skin Because it has a pocket that can be opened to the crotch area side located on the contact surface side, excrement that moves to the waist opening side can flow into the pocket to be stored and retained, Touching can be suppressed.

The side view which shows the wearing condition of the disposable diaper which is an example of the disposable wearing article which concerns on this invention. The development view of a diaper in the state which extended each elastic body to the vertical direction and the horizontal direction of a diaper. The exploded perspective view of a diaper. The figure which looked at the back waist area of the diaper shown in Drawing 1 from the upper part. The perspective view of the back waist area in the wearing condition of a diaper. FIG. 4 is a schematic cross-sectional view taken along line VI-VI shown in FIG. 1. FIG. 6 is a schematic cross-sectional view along the line VII-VII shown in FIG. 5. The exploded perspective view of a pocket formation panel. (A) The partially broken expansion | deployment top view of a pocket formation panel. (B) The figure which shows the folding process of a pocket formation panel. (C) The figure which shows the state by which the pocket formation panel was bent along the 1st and 2nd bending line. (D) The figure which shows the state by which the pocket formation panel was bent by the 3rd and 4th bending line. FIG. 5 is a schematic cross-sectional view along the line XX shown in FIG. 4.

The following embodiment relates to the disposable wearing article shown in FIGS. 1 to 10 as an example of the present invention, and includes not only an indispensable structure of the invention but also a selective and preferable structure. In FIG. 2, each elastic body, which will be described later, is stretched to such an extent that the gathers generated on the member to which each elastic body is attached appear to be substantially eliminated by natural vision against the contraction force. It is in the state.

With reference to FIG.1 and FIG.2, the disposable diaper 10 shown as an example of the disposable wearing article of this invention has the vertical direction Y, the horizontal direction X, and the thickness direction Z orthogonal to them, The vertical direction Y A vertical axis P that divides the dimension of the diaper 10 in the lateral direction X into two equal parts, and a horizontal axis Q that extends along the lateral direction X and divides the dimension of the longitudinal direction Y of the diaper 10 into two equal parts. However, it is substantially symmetrical with respect to the vertical axis P. In addition, in this specification, "it overlaps in the planar view of the diaper 10" means overlapping in the thickness direction Z. The diaper 10 includes a skin contact surface and a non-skin contact surface facing the skin, a front waist region (first or second waist region) 11, a rear waist region (first or second waist region) 12, and front and rear. The rear waist region 12 is formed with a pocket 20 that opens toward the crotch region 13. The diaper 10 includes a chassis 14 in the form of a base, a pair of fastener portions 16 provided on both sides of the rear waist region 12 of the chassis 14, and a pocket forming panel 40 that is attached to the chassis 14 and forms a pocket 20. Including.

<Chassis>
The chassis 14 has a front end edge 14a and a rear end edge 14b extending in the horizontal direction X and spaced apart from each other in the vertical direction Y, and both

side edges

14c and 14d extending in the vertical direction Y and spaced apart from each other in the horizontal direction X. In addition, both side edges that define the crotch region 13 have a concave curved shape. The chassis 14 is positioned between the liquid-permeable inner surface sheet 51 positioned on the skin contact surface side, the liquid-impervious outer surface sheet 52 positioned on the non-skin contact surface side, and the inner and

outer surface sheets

51 and 52. And a liquid-impervious or liquid-impervious leak-proof sheet 54 located between the absorber 53 and the outer sheet 52. A pair of barrier cuff sheets 55 that are separated in the horizontal direction X and extend in the vertical direction Y are disposed on the skin contact surface side of the inner surface sheet 51.

The inner surface sheet 51 is formed from a liquid nonwoven fabric having liquid permeability, and covers the entire skin contact surface of the absorbent body 53. As the inner sheet 51, for example, various known fiber nonwoven fabrics such as hydrophilic spunbond fiber nonwoven fabric, point bond fiber nonwoven fabric or air-through nonwoven fabric having a mass 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 from a liquid-impervious fiber nonwoven fabric, a plastic film, or a laminate sheet thereof. When the outer sheet 52 is formed of a fiber nonwoven fabric, for example, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used.

The absorbent body 53 has a front edge 53a and a rear edge 53b extending in the lateral direction X, and both side edges 53c extending in the longitudinal direction Y. The absorbent core material and tissue paper covering the core material. And a liquid diffusible coating sheet. As the core material, wood fluff pulp, superabsorbent polymer particles, or a mixture thereof can be used. The core material and the covering sheet can be joined to each other using a known joining means such as a hot melt adhesive (not shown). The absorber 53 should just be located in the crotch area 13 at least, and is extended from the crotch area 13 to the front-and-

back waist areas

11 and 12 in this embodiment. It is preferable that a part of the absorber 53 extending to the rear waist region 12 overlaps 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 sheet 52 and outside the longitudinal direction Y of the absorber 53. The front waist elastic body 59 is bonded between the outer sheet 52 and the inner sheet 51 by a known bonding means such as a hot melt adhesive (not shown). The front waist elastic body 59 extends in the lateral direction X between both

side edges

14c and 14d of the chassis 14. As the front waist elastic body 59, it is possible to use a plurality of string-like or strand-like elastic bodies attached so as to be shrinkable in the stretched state in the lateral direction X, elastic stretchable fiber nonwoven fabric sheets containing elastomer fibers, and the like. it can.

The leak-proof sheet 54 covers the entire non-skin contact surface of the absorber 53, and a known joining means such as a hot melt adhesive (not shown) is provided between the covering sheet of the absorber 53 and the outer sheet 52. Can be joined. The leak-proof sheet 54 can be made of a liquid-permeable, preferably liquid-impervious and breathable plastic film, and prevents body fluid absorbed by the absorber 53 from leaking outside the diaper 10. Can do.

A leg elastic body 57 is attached to the skin contact surface side of the outer sheet 52 and outside the lateral direction X of the absorber 53. The leg elastic body 57 is 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 elastic body 57 extends in the longitudinal direction Y from the crotch region 13 to the front and

rear waist regions

11 and 12. As the leg elastic body 57, 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 fiber nonwoven fabric sheet containing elastomer fibers, or the like can be used. . By the leg elastic body 57, elastic side flaps having a gasket function are formed in both outer regions in the lateral direction X of the absorber 53.

For the barrier cuff sheet 55, for example, a hydrophobic SMS fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used. The barrier cuff sheet 55 is fixed to the skin contact surface of the inner sheet 51, and has a front fixing portion 81 and a rear fixing portion 82 that are spaced apart from each other in the vertical direction Y, and a fixed side portion (proximal portion) extending in the vertical direction Y. 83 and a sleeve-like free side edge (distal edge) 84 located inward in the lateral direction X from the fixed side 83. A cuff elastic body 58 made of a string-like or strand-like elastic member and extending in the longitudinal direction Y is attached to the free side edge portion 84 so as to be contracted in an extended state. When the cuff elastic body 58 contracts in the wearing state, the free side edge 84 is separated from the inner surface sheet 51 toward the wearer's body, and a pair of leak-proof cuffs for preventing side leakage of body fluid is formed. The

By the front waist elastic body 59 described above, the front waist region 11 of the chassis 14 is formed with a front waist elastic region 85 that can elastically expand and contract in the lateral direction X. 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 connectable and separable by fastening means 63 disposed in the fastener portion 16.

<Fastener part>
1 to 3, the fastener portion 16 includes a fixing portion 61 fixed to the side portion of the chassis 14 and a free portion 62 extending from the fixing portion 61 outward in the lateral direction X. 61 and a tab sheet 64 that forms the free part 62, and a fastening means 63 positioned on the free part 62 of the tab sheet 64. The fixing part 61 is located between the outer sheet 52 and the barrier cuff sheet 55 and is bonded to the

sheets

52 and 55 using a known bonding means such as a hot melt adhesive.

As the tab sheet 64, for example, a spunbond fiber nonwoven fabric, an SMS fiber nonwoven fabric or a laminate sheet thereof having a mass of about 40 to 60 g / m ² can be used. The fastening means 63 includes a base sheet joined to the tab sheet 64 and a plurality of hook elements that stand up from the base sheet. The material of the fastening means 63 is, for example, an olefin-based material such as polyethylene or polypropylene. A material, a polyester-type material, etc. can be used. For fixing 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 is detachably engaged 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 region 11.

<Pocket>
Referring to FIGS. 1 and 4 to 7, the diaper 10 has a waist contact region 31 that contacts the wearer's body on the waist opening 19 side of the rear waist region 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 portion 32a and an outer end portion 32b. Moreover, the diaper 10 has the pocket 20 located so that the waist contact area 31 may be opposed in 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 vertical 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 into a pocket outer region 23 extending from the crotch region 13 side to the waist opening 19 side, a pocket outer region 23 and a waist contact region 31. The pockets are connected to the pocket outer side region 23 through the bent portion 25 extending in the lateral direction X, and extend downward from the bent portion 25 to connect to the inner end portion 32a of the central portion 32 of the waist contact region 31. The inner region 22 is defined by both side portions of the pocket inner and

outer regions

22 and 23 and the pocket both side regions 24 which are folded inward in the lateral direction X. By connecting the pocket inner region 22 and the central portion 32 of the waist contact region 31, a bent portion 27 that is bent downward is formed. Both side portions of the pocket inner and

outer regions

22, 23 are overlapped with each other to form a pocket both side region 24, and both side fixing portions 26, which are portions on the outer side in the lateral direction X of the pocket both side regions 24, are the waist contact regions 31. Fixed to both sides. The both side fixing portions 26 extend inward in the lateral direction X from the fixing portions 61 of the pair of fastener portions 16, so that the pocket 20 does not have a size that opens between both side edges 14 c and 14 d of the chassis 14. At least, it has a size that opens at the center of the rear waist region 12.

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

The pocket side areas 24 are folded inward in the lateral direction X (toward the vertical axis P). Referring to FIG. 4, when the diaper 10 is not worn, the bent portion 27 and the pocket side regions 24 are slightly unfolded, and the center portion 32 and the pocket 20 are opened upward. A recess 34 is defined. As long as the pocket both sides area 24 is folded so that extension is possible, a plurality of bent lines including a part that is bent unintentionally and extending in the longitudinal direction Y may be formed. The pocket 20 is located on an extension line in the longitudinal direction Y of the absorbent body 53, and the dimension in the lateral direction X of the pocket inner area 22 and the dimension in the lateral direction X of the pocket outer area 23 due to the contraction action of the pocket elastic body 76. And the pocket both sides 24 extend inward in the lateral direction X (toward the longitudinal axis P) due to the inward bending at the extended portions of the side edges 53c of the absorber 53 in the pocket both sides 24. It will be in a folded state.

As described above, the pocket 20 is bent toward the lower side, the pockets 27 folded toward the inner side in the lateral direction X, and toward the waist opening 19 (upward). When the waist contact area 31 is extended in the direction around the waist by having the bent portions 25 bent and bent in different directions (three directions), the pocket both side areas 24 Rises and the pocket inner area 22 moves rearward so as to be separated from the central portion 32 of the waist contact area 31 (see FIG. 5). 6 and 7, the pocket inner region 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 rearward. Therefore, as the inclination angle α increases, the pocket inner region 22 becomes in a lying state and serves as the 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 (accommodating space) S that can be used.

<Pocket forming panel>
Referring to FIGS. 3, 8, and 9 (a), the pocket forming panel 40 includes an inner end edge 40 a and an outer end edge (rear waist opening edge) 40 b extending in the lateral direction X, and between the inner and outer end edges 40 a and 40 b. A horizontally long rectangular shape defined by both side edges 40c extending in the longitudinal direction Y, and a first surface 70A (skin contact surface) and a second surface 70B (non-skin contact surface) located on the opposite side. And a first folding line 41 and a second folding line 42 extending in parallel in the lateral direction X. The pocket forming panel 40 includes an outer end portion 43 positioned between the outer edge 40b and the first folding curve 41, an intermediate portion 44 positioned between the first folding curve 41 and the second folding curve 42, It has the inner end part 45 located between the 2nd folding line 42 and the inner end edge 40a. On the second surface 70B side of the outer end portion 43, a pair of first joining regions 71A located facing the lateral direction X are located, and a first non-joining region 71B is located between them. On the first surface 70A side of the intermediate portion 44, a pair of second joining regions 72A located facing the lateral direction X are located, and a second non-joining region 72B is located between them.

The pocket forming panel 40 includes an inner sheet 46 positioned on the skin contact surface side, an outer sheet 47 positioned on the non-skin contact surface side, and an outer end portion 43 that extends in the lateral direction X. A plurality of string-shaped or strand-shaped rear waist elastic bodies 48 fixed to be contractible in an extended state between 46 and 47, and arranged in the intermediate portion 44 and extending in the lateral direction X, between the inner and

outer sheet

46, 47 And a string-like or strand-like pocket elastic body 76 that is fixed to be contractible in an expanded state. A liquid-impermeable sheet 75 is further disposed between the inner and

outer surface sheets

46 and 47. The liquid-impermeable sheet 75 is preferably made of a fiber nonwoven fabric or a plastic film having air permeability, and is located at least at the inner end 45 and the intermediate portion 44. Only the pocket forming panel 40 made of a fiber nonwoven fabric cannot sufficiently retain soft stool with high fluidity and may ooze out to the outer surface. And can prevent exudation of such stool. The liquid-impervious sheet 75 is disposed in the pocket forming region of 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-joining area 72B). Having a dimension in the lateral direction X is preferable in preventing exudation of body fluid more effectively.

Referring to FIGS. 9B and 9C, the pocket forming panel 40 is configured such that the second surface 70 B side of the outer end portion 43 and the second surface 70 B side of the intermediate portion 44 are aligned with each other along the first folding line 41. Folded so as to be in contact with each other, and folded along the second folding line 42 so that the first surface 70A side of the intermediate portion 44 and the first surface 70A side of the inner end portion 45 are in contact with each other By being bent, the state of being bent into a substantially Z shape in the longitudinal section is maintained.

The outer end portion 43 and the intermediate portion 44 are joined to each other in the first joining region 71A, and the intermediate portion 44 and the inner end portion 45 are joined to each other in the second joining region 72A. The first joining area 71A and the second joining area 72A have substantially the same dimension in the lateral direction X, and the dimensions in the transverse direction X of the

non-joining areas

71B and 72B located between them are also substantially the same. In addition, the first and second

non-bonding regions

71B and 72B are positioned so as to overlap each other in a plan view of the diaper 10. The first and second joining

areas

71A and 72A are formed by, for example, a known heat welding means such as a known adhesive such as a hot melt adhesive or a heat seal.

Referring to FIG. 9D, the pocket forming panel 40 has the outer end portion 43 contracted by the rear waist elastic body 48, and is bent along the first and second folding curves 41 and 42 to be first and second. A pair of third parts extending in the longitudinal direction Y along the side edge of the second non-joining area 72B from the joined state via the second joining

areas

71A and 72A through the intermediate part 44 and the inner end part 45 laminated. By further folding along the folding line 49A and the fourth folding line (mountain folding curve) 49B, the portion excluding the outer end portion 43 has a substantially Ω-shaped cross section.

Referring to FIGS. 2, 6, 7, and 9, the pocket forming panel 40 bent in a substantially Ω cross section is located on the second surface 70 </ b> B side of the inner end portion 45 (third bonding region). ) 73 to be fixed to the skin contact surface side of the chassis 14. In this way, the pocket forming panel 40 is fixed in a state where the pocket forming panel 40 is folded by a plurality of bending lines, so that the outer end portion 43 has a waist contact region 31 of the rear waist region 12 and the intermediate portion 44 has a pocket inner region 22. The pocket outer area 23 is formed by a portion of the inner end portion 45 facing the intermediate portion 44. Further, both side portions of the pocket inner region 22 and both side portions of the pocket outer region 23 are joined through the second joining region 72A so as to overlap each other, and the second non-joining region 72B of the intermediate portion 44 and the inner end portion are joined. The pockets 20 are formed by the 45 second non-bonding regions 72B.

In the present embodiment, the pockets 20 and the like are formed by fixing the pocket forming panel 40 which is a separate body to the chassis 14. However, as long as the technical effect of the present invention is exhibited, the pocket forming panel 40 is not limited to the chassis 14. The waist contact area 31 may be formed of the same sheet member as that of the chassis 14, and a separate sheet member may be formed in the waist contact area 31. May be fixed to form the pocket 20. Further, the pocket forming panel 40 may be formed from a single elastic nonwoven fabric sheet, and an elastic stretchable nonwoven fabric sheet is disposed between the inner and

outer sheets

46, 47 instead of the rear waist elastic body 48. May be. Therefore, in this specification, for example, “the pocket inner region 22 is connected to the inner end portion 32a of the central portion 32 of the waist contact region 31” means that the central portion 32 and the pocket inner region 22 are formed by the same sheet member. The case where it is formed and bent at the bent portion 27 and the case where they are formed from separate sheet members and both the sheet members are connected at the bent portion 27 are included.

In general, relatively young infants excrete fluid soft stool in various situations such as breastfeeding and posture held by the mother, so loose stool leaks from the rear waist opening or the back of the wearer There is a risk that the loose stool will be pressed against and dirty. In particular, in the rear waist region 12, it is difficult to form such a gap because it has an outer shape with a protruding buttock, and in order to temporarily store and hold excrement, like the diaper 10 according to the present embodiment, It is necessary to intentionally form a pocket space S that exhibits a three-dimensional shape in a worn state.

In this embodiment, the waist contact area 31 and the pocket 20 are positioned 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, the excrement that has moved from the crotch region 13 side to the rear waist opening side is prevented from leaking, and the excreted matter that has been prevented from flowing flows into the pocket space S that protrudes upward, temporarily. Contained and held. Thus, by letting the excrement prevented from moving enter the pocket 20 located on the back side of the rear waist region 12, it is possible to suppress discomfort and skin trouble due to the excrement coming into contact with the body. . Since the pocket 20 is not directly linked to the expansion and contraction of the waist contact area 31, there is no possibility that the opening of the pocket 20 is closed even if the rear waist area 12 is extended. Moreover, it is preferable that the rear end edge 53b of the absorber 53 overlaps the pocket 20 in a plan view. With such a configuration, excrement that has not been absorbed by the absorber 53 and has moved to the rear waist opening side can be reliably obtained. Can be accommodated in the pocket 20. Further, the liquid-impermeable sheet 75 can make it difficult to visually recognize the excrement accommodated in the pocket 20 in appearance.

In the non-wearing state of the diaper 10, the pocket both side areas 24 of the pocket 20 have an aspect in which the pocket 20 is folded in a substantially V-shaped cross section toward the vertical axis P. 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 pocket both side regions 24 are folded and the center portion 32 of the waist contact region 31 and the pocket inner region 22 are in contact with each other, so that the rear waist region Since the whole 12 becomes more compact and the dimension in the thickness direction Z becomes smaller than the wearing state, the diaper 10 can be stored and transported conveniently.

Further, even when the wearer is in a supine state and the body pressure of the wearer is applied to the pocket 20, the pocket both side regions 24 are folded and the central portion 32 of the waist contact region 31 and the pocket Since the inner region 22 and the inner region 22 are in contact with each other, the pocket forming panel 40 is deformed by distortion due to body pressure, and the wearer feels a foreign object caused by a partial thickness change in the rear waist region 12. There is no fear. Since the pocket both side areas 24 can bend and stretch in the direction approaching and separating from the wearer's body, that is, the thickness direction Z, the direction F in which the pocket both side areas 24 are separated from the body when released from body pressure. Standing up (see FIG. 5), a three-dimensional pocket space S is formed again.

Particularly, in the disposable diaper 10, the wearer is in a supine state when the diaper 10 is worn, and the pocket 20 is crushed in the thickness direction Z by the body pressure of the wearer. In the diaper 10 of the present embodiment, by forming the pocket both side areas 24 that can bend and stretch in the pocket 20, after the diaper 10 is mounted, the pocket both side areas 24 stand up to stably form the pocket space S. Can do. In this way, the pocket 20 can be stably repeated and exhibit a three-dimensional shape by the bending and stretching movements of the pocket side regions 24, so that it is worn by younger infants who frequently change their posture or repeat frequent frequent stools. Even in this case, the soft stool can be reliably accommodated in the pocket space S. Further, as described above, the pocket inner area 22 has the required vertical dimension Y, and therefore, when the pocket both side areas 24 stand up, the pocket inner area 22 is inclined with respect to the central portion 32 and moved rearward. Therefore, more excrement can be accommodated as compared with an embodiment that does not have a folding structure on the top surface and the pocket both sides 24 side.

Further, a pair of fastener portions 16 are attached to both side portions of the chassis 14 in the rear waist region 12, and the fixing portions 61 of the fastener portions 16 overlap the pocket 20 and the waist contact region 31 in the lateral direction X. It is located outside the lateral direction X of the pocket 20. In such a diaper 10, when the fastening means 63 of the fastener portion 16 is engaged with the front waist region 11, the fastener portion 16 easily interlocks with the expansion and contraction of the waist contact region 31, and the front and rear waist regions 11 in the direction around the waist. , 12 is improved. In order to further improve the fit, at least a part of the fixing portion 61 has a thickness direction with respect to 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 that Z overlap. Referring to FIG. 2, the waist contact area 31 is positioned so as to overlap with the fastening means 63 in the lateral direction X. Therefore, when the fastening means 63 is engaged, the waist contact area 31 and the body are in contact with each other. It is possible to suppress the generation of a gap therebetween, prevent the excrement from leaking out from the waist contact area 31, and guide the excrement to be accommodated in the pocket 20.

Further, since the pocket inner and

outer regions

22 and 23 are fixed to the waist contact region 31 at the both side fixing portions 26, it is easy to form a three-dimensional shape in conjunction with the contraction of the waist contact region 31. Even when the waist contact area 31 is extended in the lateral direction X in the wearing state, the shrinkage amount in the lateral direction X of the waist contact area 31 including the central portion 32 ( The length dimension in the lateral direction X of the contracted portion is preferably larger than the contraction amount in the lateral 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 magnification in the lateral direction X as compared to the natural state (when contracted), the pocket side areas 24 are not completely laid down, and the pocket 20 can maintain a three-dimensional shape.

Accordingly, an elastic body that can be expanded and contracted in the lateral direction X is disposed in the waist contact area 31, while an elastic body is not disposed in the pocket inner area 22 and / or the pocket outer area 23. It is preferable to make it non-stretchable. In the diaper 10 of the present embodiment, a pocket elastic body 76 that can be expanded and contracted in the lateral direction X is disposed in the pocket inner region 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 that can extend in the lateral direction X is arranged in the pocket inner region 22 in this way, when the central portion 32 is extended and a force is applied to the pocket both side regions 24 to lie down. In addition, since the elastic body maintains the standing state of the pocket side regions 24 and the state in which the pocket inner region 22 is separated from the central portion 32 against the force, the pocket 20 can exhibit a three-dimensional shape more stably. it can. Further, in the case where both the pocket inner and

outer regions

22 and 23 have elastic stretchability, the shrinkage 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 stably form the pocket 20. It is preferable that the shrinkage rate in X is higher.

In the diaper 10 of the present embodiment, in the joint region 73 between the chassis 14 and the pocket forming panel 40, the chassis 14 is elastically non-stretchable, and the waist contact region 31 is in a region overlapping the pocket 20 in the thickness direction Z. Is higher than the shrinkage rate of the joint region 73. Therefore, the pockets 20 can be easily maintained in a three-dimensional shape without the pockets 24 lying down. Further, due to the rigidity of the chassis 14 joined to the inner end portion 45 of the pocket forming panel 40 via the joining area 73, the pocket outer area 23 has a relatively high rigidity, and distortion deformation is suppressed, thereby reducing the pocket space. S can be formed stably. 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. As the rigidity imparting member, for example, it is preferable to use a repellent member such as urethane foam.

Although not shown, one or more deformation induction portions extending in the longitudinal direction Y may be formed in the absorber 53 located in the rear waist region 12. The deformation induction part is for bending the absorber 53 along the shape of the buttock. For example, the mass per unit area of the core material in the absorber 53 is made lower than the non-arranged region of the deformation induction part. Can be formed. By forming such a deformation | transformation induction | guidance | derivation part, the opening of the pocket 20 can be expanded more and the pocket space S which is three-dimensional and can accommodate excrement can be formed.

Further, it is preferable that the contraction rate in the lateral direction X of the waist contact region (rear waist elastic region) 31 is higher than the contraction rate in the lateral direction X of the front waist elastic region 85. Such setting of the shrinkage rate can be adjusted, for example, by making the shrinkage rate of the elastic body disposed in the front waist elastic region 85 lower than the shrinkage rate of the elastic body disposed in the waist contact region 31. The front waist elastic region 85 is opposed to the waist contact region 31 in the front-rear direction of the wearing state, and can be engaged with the fastening means 63 of the fastener portion 16, and can be elastically expanded and contracted in the lateral direction X. Form. In such a diaper 10, the fit 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 is larger than the front waist elastic area 85 in the waist circumference direction. Therefore, the opening of the pocket 20 is easy to open, and the pocket space S can be formed stably. Such a stretchable target area is formed by arranging a sheet member having a loop element that can be elastically stretched in the lateral direction X in the front waist area 11 instead of the front waist elastic body 59. May be.

<Measurement method of shrinkage rate of each region>
First, in the unfolded state of the diaper 10, a stacked region (a region where the pocket is surrounded by a broken line K in FIG. 2) of a pocket outer region 23 and a waist contact region 31 that overlap each other in a plan view with a pocket inner region 22 has a predetermined width. The size of each sample was measured by the following procedure as a sample cut out with a size of (for example, a vertical dimension of 15 mm x a horizontal dimension of 100 mm). i) grip one end of the opposite ends in the lateral direction X of each sample, ii) attach a clip and a weight to the other end, and each sample is perpendicular to the floor without being twisted Suspended to be. In such a state, in the arrangement region of the elastic element (a predetermined portion of the sheet when there is no elastic element), marks are attached to two portions that are separated and opposed in the lateral direction X with ink or the like, and the separation dimension between the marks is set. It was measured and used as the dimension (L1) at the time of contraction of each sample. The weight of the weight can be adjusted as long as the elastic element arranged 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 and extend it in the lateral direction X until there is no gathering due to elastic elements on the surface, then measure the distance between the two marks, L2). The dimensions L1 and L2 measured by this measurement method were applied to the formula of shrinkage rate = ((L2−L1) / L2) × 100 (%) to calculate the shrinkage rate (%) of each sample. In addition, the shrinkage 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 region surrounded by the broken line K in FIG. 2 in the front-rear direction in the wearing state). A sample was cut out in size.

Referring to FIG. 2, the pocket forming panel 40 that forms the pocket 20 is located outside the leg elastic body 57 and the cuff elastic body 58 in the longitudinal direction Y and does not overlap with each other in 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 and a force to pull it downward acts, the pocket outer area 23 is pulled downward. Therefore, there is no possibility that the bent portion 25 collapses and the pocket space S disappears.

Referring to FIG. 6, as described above, the pocket forming panel 40 that forms the pocket 20 is a sheet member that is separate from the chassis 14 that forms the outer shape of the diaper 10. In the portion that overlaps with each other, the pocket outer region 23 that is elastically non-stretchable is joined to each other, so that the elasticity of the central portion 32 of the waist contact region 31 is not reduced by the rigidity of the chassis 14. Excellent fit. Further, by making the pocket forming panel 40 bent in a substantially Z shape in the longitudinal section as a separate member from the chassis 14, the sheet member constituting the chassis 14 is conveyed in the vertical direction Y when the diaper 10 is manufactured. By the “longitudinal flow manufacturing method”, the diaper 10 can be continuously produced, and the productivity is excellent. In order to increase the continuous productivity by the longitudinal flow manufacturing method, the pocket forming panel 40 is located inside the rear end edge 14b of the chassis 14 in the vertical direction Y, that is, the outer end edge 40b of the pocket forming panel 40 and the pocket 20 are folded. It is preferable that the bent portion 25 is located inside the rear end edge 14 b of the chassis 14 in the vertical direction Y. In such a diaper 10, since the folded pocket forming panel 40 is covered with the chassis 14 in appearance, it is excellent in aesthetic appearance.

Referring to FIGS. 5 and 9, the central portion 32 and the pocket 20 are formed from the pocket forming panel 40, and it can be said that the dimensions in the lateral direction X of the sheet members forming them are the same. By shrinking under the influence of the rear waist elastic body 48, the dimension in the lateral direction X of the pocket inner area 22 connected to the inner end 32a in the bent portion 27 even if no elastic body is arranged in the pocket inner area 22. Is shrunk. As a result, a plurality of gathers 78 that extend in the vertical direction Y are formed in the pocket inner region 22. Thus, by forming a plurality of gathers 78 extending in the vertical direction Y, they function like ribs, and the rigidity of the pocket inner region 22 in the horizontal direction X and the vertical direction Y is improved, and the pocket 20 Can stably form a box-shaped three-dimensional shape. Although not shown, in the front waist region 11, a pocket that can be opened downward may be disposed in the same manner as the rear waist region 12 in order to temporarily store and hold urine.

As the constituent materials constituting the diaper 10 of the present invention, various known materials that are usually used in this type of field can be used without limitation, unless otherwise specified. In the present embodiment, the front waist elastic body 59 is disposed in the front waist region 11, but a configuration in which an elastic body that can expand and contract in the lateral direction X in the front waist region 11 may not be disposed. In addition, terms such as “first” and “second” used in this specification are simply used to distinguish similar elements, positions, and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
A crotch region having a longitudinal direction and a lateral direction, a first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and a crotch region that is located between the first and second waist regions And a pair of fastener parts that are attached to both side portions of the first waist region and releasably lock the first waist region and the second waist region. The region is located on the skin contact surface side and extends in the lateral direction, and is opposed to the waist contact region in the thickness direction in the central portion in the lateral direction, and on the non-skin contact surface side. A pocket that can be opened to the crotch region side, and the pocket includes a pocket outer region that extends from the crotch region side to a waist opening side, a pocket outer region, and a waist contact region, respectively. A pocket inner region that is opposed to the thickness direction and is continuous with the pocket outer region through a bent portion that extends in the lateral direction, and that extends from the bent portion toward the crotch region and is connected to the waist contact region. Each of the pocket inner area and the pocket outer area has both side fixing portions fixed to the waist contact area on both sides in the lateral direction of the opening of the pocket.

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 further includes pocket both side regions formed from both side portions of the pocket inner side region and both side portions of the pocket outer side region and folded inward in the lateral direction.
(2) It further includes an absorber extending from the crotch region to the first and second waist regions, and the pocket is located on an extension line in the longitudinal direction of the absorber.
(3) The waist contact area can be elastically expanded and contracted in the lateral direction.
(4) At least one of the pocket inner area and the pocket outer area can be elastically expanded and contracted, and the contraction rate in the lateral direction of the waist contact area is determined by each of the pocket inner area and the pocket outer area. Higher than the shrinkage rate in the lateral direction.
(5) The waist contact area is positioned so as to overlap with the fastening means of the pair of fastener portions in the lateral direction.
(6) The waist contact area is positioned so as to overlap the fastener portion in the lateral direction.
(7) The wearing article includes a chassis that forms the first and second waist regions and the crotch region, and a pocket forming panel that is joined to the chassis and forms the waist contact region and the pocket inner / outer region. Including.
(8) The pocket forming panel is located inside an edge of the chassis in the longitudinal direction.
(9) The chassis has a joint region to which the pockets are joined, and the shrinkage rate in the lateral direction of the waist contact region is higher than the shrinkage rate in the transverse direction of the joint region.
(10) The second waist region has a target region in which the fastener portion can be engaged and disengaged and can elastically expand and contract in the lateral direction, and the contraction rate in the lateral direction of the waist contact region is: It is higher than the shrinkage rate in the lateral direction of the target area.

DESCRIPTION OF SYMBOLS 10 Disposable diaper 11 Front waist area 12 Rear waist area 13 Crotch area 14 Chassis 16 Fastener part 20 Pocket 22 Pocket inner area 23 Pocket outer area 24 Pocket both sides area 25 Folding part 26 Both sides fixed part 31 Waist contact area 32 Waist Central part 40 of the contact area Pocket forming panel 53 Absorber 63 Fastening means X Horizontal direction Y Vertical direction

Claims

A crotch region having a longitudinal direction and a lateral direction, a first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and a crotch region that is located between the first and second waist regions And a disposable wearing article including a pair of fastener portions attached to both side portions of the first waist region and detachably locking the first waist region and the second waist region,
The first waist region is located on the skin contact surface side and extends in the lateral direction, and is opposed to the waist contact region in the thickness direction at a central portion in the lateral direction. A pocket located on the contact surface side and openable to the crotch region side;
The pocket is opposed to the pocket outer region extending from the crotch region side to the waist opening side, the pocket outer region and the waist contact region in the thickness direction, respectively, and via a bent portion extending in the lateral direction. And the pocket outer area connected to the waist contact area extending from the bent portion to the crotch area side.
Each of said pocket inner side area and said pocket outer side area | region is the said wearing article which has the both-side fixing | fixed part fixed to the said waist contact area in the both sides of the said opening of the said pocket.
2. The wearing article according to claim 1, wherein the pocket is formed from both side portions of the pocket inner region and both sides of the pocket outer region, and further has pocket both side regions folded inward in the lateral direction.
The wearing article according to claim 1 or 2, further comprising an absorbent body extending from the crotch region to the first and second waist regions, wherein the pocket is located on an extension line in the longitudinal direction of the absorbent body.
The wearing article according to any one of claims 1 to 3, wherein the waist contact area is elastically stretchable in the lateral direction.
At least one of the pocket inner area and the pocket outer area can be elastically expanded and contracted, and the contraction rate in the lateral direction of the waist abutting area is the lateral width of each of the pocket inner area and the pocket outer area. The wearing article according to any one of claims 1 to 4, wherein the wearing article is higher than the shrinkage in the direction.
The wearing article according to any one of claims 1 to 5, wherein the waist contact area is located between the fastening means of the pair of fastener portions 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 portions are positioned so as to overlap the fastener portion in the lateral direction.
The wearing article includes a chassis that forms the first and second waist regions and the crotch region, and a pocket forming panel that is joined to the chassis and forms the waist contact region and the pocket inner / outer region. The wearing article according to any one of claims 1 to 7.
The wearing article according to claim 8, wherein the pocket forming panel is located inside an edge of the chassis in the longitudinal direction.
The said chassis has a joining area | region where the said pocket is joined, The shrinkage rate in the said horizontal direction of the said waist contact area is higher than the shrinkage rate in the said transverse direction of the said joining area. Wearing articles.
The second waist region has a target region in which the fastener portion can be engaged and disengaged and elastically stretchable in the lateral direction,
The wearing article according to any one of claims 1 to 10, wherein a contraction rate in the lateral direction of the waist contact region is higher than a contraction rate in the lateral direction of the target region.