JP2018108337A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article capable of suppressing leakage from the periphery of the thighs.SOLUTION: In a disposable diaper 10, both end regions 16A in the front-rear direction of an absorbent main body 16 are bonded to a belly side exterior body 12F and a back side exterior body 12R. The belly side exterior body 12F and the back side exterior body 12R comprise upper regions 12FU, 12RU and lower regions 12FD, 12RD, and the absorbent main body 16 comprises, at both side edge parts along the front-rear direction, sheet side edge parts 18A having regions not including absorbers 18, stereoscopic gathers 21, and leg gathers 23 extending in the front-rear direction at the sheet side edge parts 18A. The ends of a first elastic member 21E of the stereoscopic gathers 21 are positioned at the lower regions 12FD and 12RD, and the ends of a second elastic member 23E of the leg gathers 23 are positioned at the lower regions 12FD and 12RD.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an absorbent article provided with leg gathers and three-dimensional gathers.

  As shown in Patent Document 1, a disposable diaper as an absorbent article has a first exterior part constituting a front body, a second exterior part constituting a back body, and a front end part joined to the first exterior part. The rear end part is comprised from the absorptive main body joined to a 2nd exterior part. A 1st exterior part and a 2nd exterior part bend an absorptive main body in two, and comprise the waist part at the upper end part by joining the both ends of the waist part direction of each exterior part, and a lower end part The leg-hole opening is configured. In many disposable diapers, leg gathers are arranged around the leg openings, and inner surfaces that are in contact with the skin of the absorbent main body, and three-dimensional gathers are arranged at both ends along the front-rear direction. Leg gathers and three-dimensional gathers are configured by sandwiching elastic members such as rubber thread between sheets.

JP 2006-263306 A

  Even in an absorbent article having leg gathers or three-dimensional gathers, if the leg gathers or three-dimensional gathers are separated from the skin and do not adhere to the skin, gaps are formed around the legs, causing excrement to leak out from the legs.

  An object of this invention is to provide the absorbent article which enabled it to suppress the leak from a leg periphery.

  An absorbent article for solving the above problems is an absorbent main body in which a first exterior part, a second exterior part, and both end regions in the front-rear direction are bonded to and overlap the first exterior part and the second exterior part. An absorbent article in which the absorbent main body located between the first exterior part and the second exterior part constitutes a crotch part, among the first exterior part and the second exterior part, At least one includes an upper region constituting a waistline portion and a lower region located below the upper region, and the absorbent main body is both side edges along the front-rear direction, and the crotch A three-dimensional gather disposed in a range including a portion, wherein the first elastic member extending in the front-rear direction is sandwiched between side sheets extending in the front-rear direction, and a base end portion is bonded to the inner surface side of the absorbent main body Gather and front at both side edges Leg gathers sandwiching a second elastic member extending in the front-rear direction between the sheets, the end of the first elastic member is on the upper region side than the end of the lower region on the crotch side, And the end part of the said 2nd elastic member is located in the said crotch part side rather than the edge part of the said crotch part side of the said upper area | region, and the said upper region side rather than the edge part of the said crotch part side of the said lower area | region Is located.

According to the said structure, in an absorbent article provided with an upper area | region and a lower area | region in an exterior body, the leakage from a leg periphery can be suppressed by providing a solid gather and a leg gather. Moreover, since an edge part is located in a lower area | region, a 1st elastic member and a 2nd elastic member can stand up a solid gather or a leg gather around a leg firmly. Thereby, the leakage from the leg periphery can be suppressed.
In addition, when worn, the liquid that has entered the groove formed between the three-dimensional gather and the leg gather flows in the direction of the upper region when the posture of the wearer is changed. In the upper region, the first elastic member is not disposed in the three-dimensional gather, and no groove is formed. Therefore, the liquid can be flowed toward the absorption region. Thereby, the leakage from the leg periphery can be suppressed.

In the absorbent article, the end portion of the three-dimensional gather in the front-rear direction is overlapped with the upper region, and a part of the region extending from the distal end portion to the folded portion of the three-dimensional gather is bonded to the base end portion side. It is good also as composition which has.
According to the above configuration, the three-dimensional gather can be raised in a range extending from the lower region on the abdomen side, the crotch region, and the lower region on the back side.

In the absorbent article, in the region where the end of the three-dimensional gather in the front-rear direction overlaps with the upper region, the entire region extending from the front end of the three-dimensional gather to the folded portion is bonded to the base end side. It is good also as a structure.
According to the above configuration, the three-dimensional gather can be raised in a range extending from the lower region on the abdomen side, the crotch region, and the lower region on the back side.

In the absorbent article, the upper region includes an internal elastic portion positioned on the inner side with respect to the end region, and the lower region is positioned on the outer side with respect to the end region. An external elastic portion bonded to an outer surface, wherein the internal elastic portion is non-bonded in a region overlapping with the end region, and is located outside the end region around the end region. It is good also as a structure by which it is adhere | attached with respect to the sheet | seat part which is carrying out, and the pocket which made the open end the crotch part side was comprised between the said internal elastic part and the said edge part area | region.
According to the said structure, excrement can be accommodated in a pocket. Moreover, excrement can be guide | induced to a pocket by a three-dimensional gather and a leg gather.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which made it possible to suppress the leak from a leg periphery can be provided.

The perspective view of the underpants type disposable diaper in 1st Embodiment which materialized the absorptive main part of the present invention. (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 1st Embodiment, (b) is aa sectional drawing of (a). FIG. 3A is a plan view showing an adhesion region in an upper region corresponding to FIG. 2A, and FIG. 2B is a plan view showing an adhesion region in a lower region corresponding to FIG. The principal part sectional view in the state where the diaper was equipped. It is a figure which shows the state which extended the absorptive main body in the width direction, (a) is XX sectional drawing in the crotch part of Fig.2 (a), (b) is in the lower area | region of Fig.2 (a). YY sectional drawing, (c) is ZZ sectional drawing in the upper area of Drawing 2 (a). It is a figure which shows the state of the absorptive main body at the time of wear, (a) is XX sectional drawing in the crotch part of Fig.2 (a), (b) is Y- in the lower area | region of Fig.2 (a). Y sectional drawing, (c) is ZZ sectional drawing in the upper area of Drawing 2 (a).

With reference to FIG. 1 thru | or 6, the underpants type disposable diaper in one Embodiment which actualized the absorbent article in this invention is demonstrated.
As shown in FIG. 1, a pants-type disposable diaper 10 (hereinafter simply referred to as “diaper 10”) has a front body 10F having a shape that follows the shape of the abdomen of the human body and a shape that follows the shape of the back of the human body. A back body 10R and a crotch 10C connecting the front body 10F and the back body 10R are provided.

  In the front body 10F, the side opposite to the crotch portion 10C constitutes a waistline portion 10W that surrounds the waistline portion of the human body, and is provided with a waistline opening 10A at the upper end. The left and right ends of the front body 10F, the left and right ends of the back body 10R, and the left and right ends of the crotch 10C constitute a pair of left and right leg openings 10L having a shape surrounding the thigh portion of the human body. doing. In addition, the left and right end portions of the front body 10F and the back body 10R in the waist direction are joint portions 11.

  Fig.2 (a) is a top view which shows the expansion | deployment state of a pants type disposable diaper, (b) is aa sectional drawing of (a). In FIG. 2B, the right side is the skin side of the diaper wearer.

  The waistline portion 10W in the front body 10F is configured by a ventral side exterior body 12F as a first exterior portion on the abdomen side, and the waistline portion 10W in the rear body 10R is a backside exterior body 12R as a second exterior portion on the back side. It consists of

  The ventral-side exterior body 12F and the back-side exterior body 12R have a rectangular shape whose longitudinal direction is the waistline direction. The sheet constituting the outer package is, for example, a nonwoven fabric made of synthetic fibers made from polyethylene, polypropylene, polyester, or other thermoplastic resin, and may be a liquid-permeable sheet or liquid-impermeable sheet. Good. The ventral-side exterior body 12F is configured by sandwiching an abdominal-side upper elastic member 15FU and a ventral-side lower elastic member 15FD between sheets constituting the ventral-side exterior body 12F. The back side exterior body 12R is also configured by sandwiching a back side upper elastic member 15RU and a back side lower elastic member 15RD between sheets constituting the back side exterior body 12R. These elastic members 15FU, 15FD, 15RU, and 15RD are elastic bodies formed of one or more materials selected from natural rubber, synthetic rubber, urethane, and the like, and are formed in a thread shape or a string shape. A plurality of elastic members 15FU, 15FD, 15RU, and 15RD are arranged in parallel to each other along the waistline direction.

  The abdominal exterior body 12F and the back exterior body 12R are connected by an absorbent main body 16 constituting the crotch 10C. The absorptive main body 16 has a rectangular shape whose longitudinal direction is the front-rear direction. As shown in FIG. 2B, the absorbent main body 16 has a liquid-impermeable back sheet 17, an absorbent body 18, a liquid-permeable top sheet 19, and the back sheet 17. And a cover sheet 20 stacked on the outside. In the diaper 10, the top sheet 19 is disposed on the inner side in contact with the wearer's skin, the back sheet 17 is disposed on the outer side with respect to the absorbent body 18, and the cover sheet 20 is disposed on the outermost side so as to cover the back sheet 17. Placed outside. And in the absorptive main body 16, it has overlapped in order of the cover sheet 20, the back sheet 17, the absorber 18, and the top sheet 19 from the outer side.

  The material forming the back sheet 17 is, for example, a film made of polyethylene resin having liquid impermeability. The back sheet 17 is formed with a large number of fine holes to ensure air permeability. The material which forms the top sheet 19 and the cover sheet 20 is one or more materials selected from a woven fabric, a nonwoven fabric, a porous film, etc., for example. The top sheet 19 is made of, for example, a non-woven fabric having liquid permeability composed of fibers of thermoplastic resin such as polypropylene, polyethylene, polyester, and nylon and subjected to hydrophilic treatment. . Since the cover sheet 20 is the outermost sheet and is a sheet that touches the user, the cover sheet 20 is composed of a non-woven fabric or the like that improves the feeling of touch.

  The absorber 18 has an elongated band shape so as to straddle the front body 10F, the crotch 10C, and the back body 10R. The absorbent body 18 is composed of a molded body of absorbent material and a core wrap that wraps the molded body. The molded body of the absorbent material that forms the absorbent body 18 is obtained by molding an absorbent material such as fluff pulp, a superabsorbent polymer, a hydrophilic sheet, and the like. The core wrap is made of tissue, nonwoven fabric, or the like. The absorber 18 is disposed and joined between the back sheet 17 and the top sheet 19. The absorbent body 18 extends between the ventral-side exterior body 12F and the back-side exterior body 12R, and includes a ventral-side end portion 18F and a back-side end portion 18R. In the absorbent body 18, the core wrap may be omitted.

  The back sheet 17, the top sheet 19, and the cover sheet 20 are sheets having a rectangular shape that is slightly larger than the absorbent body 18. The absorbent body 18 is disposed in the central region, and the absorbent body 18 has a peripheral portion. The absorber 18 does not exist. Both side edges in the front-rear direction of the absorbent main body 16 are sheet side edges 18A where the absorber 18 does not exist. As an example, the sheet side edge portion 18 </ b> A is configured by overlapping a back sheet 17, a top sheet 19, and a cover sheet 20. Further, the sheet side edge portion 18A is configured by folding back both side edge portions extending in the front-rear direction of the cover sheet 20 as an example. Moreover, the inner surface and outer surface of the area | region which overlaps with the exterior bodies 12F and 12R in the front-back direction of the absorptive main body 16 become the edge part area | region 16A to which the sheet | seat which comprises an exterior body is adhere | attached. The end region 16A is both ends of the absorbent main body 16 in the front-rear direction, and includes an abdomen end 18F and a back end 18R of the absorbent body 18, peripheral portions 18B of these ends 18F and 18R, a seat This is a region including the side edge 18A.

  The ventral exterior body 12F includes a ventral upper region 12FU and a ventral lower region 12FD. The backside exterior body 12R also includes a backside upper region 12RU and a backside lower region 12RD.

  As shown in FIG. 2B, in the ventral upper region 12FU and the dorsal upper region 12RU, the ventral upper elastic member 15FU and the dorsal upper elastic member 15RU are located inside the absorbent main body 16, that is, the top sheet 19 It is arrange | positioned at the side and comprises a part of trunk periphery opening part 10A and trunk part 10W. In the abdominal lower region 12FD and the back lower region 12RD, the abdominal lower elastic member 15FD and the back lower elastic member 15RD are disposed on the outer side with respect to the absorbent main body 16, that is, on the back sheet 17 or the cover sheet 20 side. , Constituting a part of the waistline portion 10W.

  In the ventral upper region 12FU, a plurality of ventral upper elastic members 15FU have left and right ends in the waistline direction between the sheets whose longitudinal direction is the waistline direction (between the belly side outer sheet portion 26F and the belly side inner sheet portion 25F). It is arranged in a stretched state over the part. In the back-side upper region 12RU, a plurality of back-side upper elastic members 15RU have a longitudinal direction in the waistline direction between the sheets (between the backside outer seat portion 26R and the backside inner seat portion 25R) in the waistline direction. It arrange | positions in the state extended | stretched over both right-and-left both ends.

  Further, in the ventral lower region 12FD, a plurality of ventral lower elastic members 15FD have a longitudinal direction in the waistline direction between the sheets (between the ventral external sheet portion 26F and the ventral internal sheet portion 25F) in the waistline direction. It is arranged across the left and right ends. In the lower back region 12RD, a plurality of lower back elastic members 15RD have a longitudinal direction in the waist direction between the sheets (between the back side outer seat portion 26R and the back side inner seat portion 25R) in the waist direction. It is arranged across the left and right ends. These elastic members 15FU, 15FD, 15RU, and 15RD constitute waist gathers and tammy gathers in the waistline portion 10W, and suppress the occurrence of abdominal and back leaks.

  As shown in FIG. 2 (b), the abdominal lower region 12 FD and the back lower region 12 RD are directly bonded to the cover sheet 20 in the end region 16 A of the absorbent main body 16. As shown in FIG. 2A, the ventral lower elastic member 15FD is arranged on the end region 16A in an unextended state, for example, a cut state. Further, most of the back-side lower elastic members 15RD are arranged in an unextended state, for example, in a cut state, on the end region 16A. Thereby, the absorptive main body 16 suppresses that the absorptive main body 16 shrink | contracts according to shrinkage | contraction of the abdominal lower elastic member 15FD and the back lower elastic member 15RD, and a pleat is formed in the absorptive main body 16. Can do. And it can suppress that a clearance gap arises between the absorptive main body 16 and skin, and can suppress abdominal leak and back leak.

  Among the plurality of back-side lower elastic members 15RD, the plurality of back-side lower elastic members 15RD1 positioned along the lower end of the back-side upper region 12RU near the back-side upper region 12RU are provided on the back side of the absorber 18. On the end 18R, it is arranged in an expanded state, that is, in a state where it is not cut. Therefore, in the region where the back-side lower elastic member 15RD1 is disposed, the pleat 16B can be formed on the back-side end portion 18R. At the back end 18R where the pleats 16B are formed, the absorber 18 is thicker than the region where the pleats 16B are not formed, and the opening end of the back side pocket 30R, which will be described later, is pushed by the buttocks and is not easily blocked. Become. The pleat 16B can function as a guide that leads to the back pocket 30R.

  As shown in FIG. 2 (b), the abdominal side upper region 12FU constitutes the abdominal side internal elastic part 27F by sandwiching the abdominal side upper elastic member 15FU between the sheets (the abdominal side external sheet part 26F and the abdominal side internal sheet part 25F). doing. The ventral lower region 12FD also constitutes a ventral external elastic portion 28F in which the ventral lower elastic member 15FD is sandwiched between sheets (the ventral external sheet portion 26F and the ventral internal sheet portion 25F). The ventral upper region 12FU and the ventral lower region 12FD are connected in series by the ventral outer sheet portion 26F and the ventral inner sheet portion 25F.

  The back-side upper region 12RU constitutes a back-side internal elastic portion 27R by sandwiching the back-side upper elastic member 15RU between the seats (the back-side outer seat portion 26R and the back-side inner seat portion 25R). The back lower region 12RD also forms a back external elastic portion 28R by sandwiching the back lower elastic member 15RD between the seats (the back outer seat portion 26R and the back inner seat portion 25R). The back-side upper region 12RU and the back-side lower region 12RD are connected in series by the back-side outer seat portion 26R and the back-side inner seat portion 25R.

  The abdominal outer sheet portion 26F and the dorsal outer sheet portion 26R are sheets that are located on the outermost side opposite to the skin and are folded inward at the waistline opening 10A and located on the most skin side. The ventral inner sheet portion 25F and the dorsal inner sheet portion 25R are sheets facing the ventral outer sheet portion 26F and the dorsal outer sheet portion 26R.

  The abdominal side external sheet portion 26F and the abdominal side internal sheet portion 25F constituting the abdominal side internal elastic portion 27F sandwich the abdominal side upper elastic member 15FU and the abdominal side lower elastic member 15FD, and are bonded by the first adhesive 24. ing. The folded-back portions of the abdominal side outer sheet portion 26F and the abdominal side inner sheet portion 25F constitute the waistline opening 10A, and the waistline opening 10A is configured by overlapping two sheets to increase the strength.

  The back-side outer seat portion 26R and the back-side inner seat portion 25R constituting the back-side inner elastic portion 27R sandwich the back-side upper elastic member 15RU and the back-side lower elastic member 15RD, and are bonded with the first adhesive 24. ing. The folded-back portions of the back side outer sheet portion 26R and the back side inner sheet portion 25R constitute the waistline opening 10A, and the waistline opening 10A is configured by stacking two sheets to increase the strength.

  In the abdominal side internal elastic part 27F and the back side internal elastic part 27R, the abdominal side internal sheet part 25F and the back side internal sheet part 25R adjacent to the abdominal side upper elastic member 15FU and the back side upper elastic member 15RU are end regions 16A. The top sheet 19 is not adhered. Further, in the ventral inner elastic portion 27F and the dorsal inner elastic portion 27R, in the region around the end region 16A, the ventral inner sheet portions 25F folded back at the waistline opening 10A are bonded together by the second adhesive 25. Is done. The cover sheet 20 in the end region 16A is also bonded to the ventral inner sheet portion 25F by the second adhesive 25.

Here, FIG. 3 (a) is a plan view showing the bonding region in the upper region corresponding to FIG. 2 (a), and FIG. 3 (b) corresponds to the bonding region in the lower region in FIG. 2 (a). FIG.
As shown in FIGS. 2B and 3A, in the ventral upper region 12FU, the cover sheet 20 in the end region 16A is bonded to the ventral inner sheet portion 25F by the second adhesive 25. The region becomes the first adhesion region 22A. Further, in the back-side upper region 12RU, a region where the cover sheet 20 in the end region 16A is bonded to the back-side inner sheet portion 25R by the second adhesive 25 is a first bonding region 22A.

  Further, in the ventral inner elastic portion 27F in the ventral upper region 12FU, the ventral inner sheet portions 25F around the first bonding region 22A and folded back at the waistline opening 10A are bonded together by the second adhesive 25. The region to be formed becomes the second adhesion region 22B. Further, in the back side internal elastic portion 27R in the back side upper region 12RU, the region where the back side internal sheet portions 25R folded back at the waistline opening 10A are bonded by the second adhesive 25 is the second bonding region 22B. Become. The second adhesive region 22B in the abdominal side internal elastic portion 27F and the back side internal elastic portion 27R has a concave shape facing the crotch portion 10C by being around the end region 16A. In the inner part of the concave shape, the abdominal side internal elastic portion 27F and the back side internal elastic portion 27R are non-adhesive portions with respect to the top sheet 19 in the end region 16A. Thereby, a ventral pocket 30F is formed between the ventral inner sheet portion 25F of the ventral inner elastic portion 27F and the top sheet 19 of the end region 16A. Further, a back pocket 30R is formed between the back side internal sheet portion 25R of the back side internal elastic portion 27R and the top sheet 19 of the end region 16A.

  These pockets 30F, 30R have an open end on the crotch 10C side, and are configured to accommodate excrement such as urine and feces that move in the direction of the abdomen and back. Further, the second adhesive region 22B includes a blank portion 34 having a predetermined width between the waistline opening 10A and the front and rear end portions of the end region 16A, and excreta contained in the pockets 30F and 30R Leaking toward the waist opening 10A is suppressed.

  Further, as shown in FIG. 3B, in the ventral lower region 12FD and the dorsal lower region 12RD, the ventral inner sheet portion 25F and the dorsal inner sheet of the ventral external elastic portion 28F and the dorsal external elastic portion 28R. A region where the portion 25R is bonded to the back sheet 17 in the end region 16A is a third bonding region 22C.

  Here, the size of the ventral pocket 30F and the back pocket 30R will be described. As shown in FIG. 4, for example, the body shape of an infant has a recessed portion 37 in the crotch portion on the abdomen 36 side, and a buttocks 39 on the back portion 38 side. Therefore, the open end of the abdominal pocket 30F is likely to be in an open state because the crotch portion is depressed, and excrement can easily enter the abdominal pocket 30F. Further, the abdominal pocket 30F tends to flow in a lot of liquid such as urine, and if it is too small, it causes abdominal leakage. Therefore, the abdominal pocket 30F is made large and deep with respect to the back pocket 30R to ensure a sufficient volume for storing excrement such as urine and to prevent the occurrence of abdominal leakage. And when disposing the diaper 10, the ventral pocket 30F is accommodated in a state where the portions other than the ventral pocket 30F are rounded.

  The back pocket 30R is small and shallow with respect to the abdominal pocket 30F, and the open end of the back pocket 30R is not easily blocked by the flange 39.

  As shown to Fig.2 (a), the solid gathers 21 are arrange | positioned at the both ends along the front-back direction on the inner surface of the absorptive main body 16, ie, the top sheet 19. As shown in FIG. Each three-dimensional gather 21 is provided with the 1st elastic member 21E extended in the front-back direction of the absorptive main body 16, and the side sheet | seat 21S which pinches | interposes the 1st elastic member 21E. The first elastic member 21E is arranged with respect to the side sheet 21S in a state where a plurality of the first elastic members 21E are parallel to each other and the hot melt adhesive is applied and stretched, and the side sheet 21S is folded in half. It is sandwiched between the side sheets 21S. The first elastic member 21E is made of the same material as the elastic members 15FU, 15FD, 15RU, and 15RD. The side sheet 21S is also composed of a sheet similar to the top sheet 19 and the cover sheet 20, and is composed of a long sheet body that extends in the front-rear direction including a liquid-impermeable nonwoven fabric, for example.

  The side seat 21S has a length straddling the ventral upper region 12FU, the crotch portion 10C, and the dorsal upper region 12RU in the front-rear direction. The first elastic member 21E is shorter than the length in the front-rear direction of the side seat 21S, and has a length straddling the ventral lower region 12FD, the crotch portion 10C, and the dorsal lower region 12RD. Specifically, the front end portion of the first elastic member 21E is located on the abdominal upper region 12FU side with respect to the lower end portion of the abdominal lower region 12FD, and is on the crotch 10C side with respect to the abdominal upper region 12FU, It is located in the ventral lower region 12FD. In this example, the front end portion of the first elastic member 21E is located at the end portion of the ventral lower region 12FD on the ventral upper region 12FU side. In addition, the rear end portion of the first elastic member 21E is located on the back-side upper region 12RU side than the lower end portion of the back-side lower region 12RD, and on the crotch portion 10C side, that is, the back side from the back-side upper region 12RU. Located in the lower region 12RD. In this example, the rear end portion of the first elastic member 21E is positioned at the end portion on the back side upper region 12RU side of the back side lower region 12RD.

  As shown in FIG. 5A, in the crotch 10C, the side seat 21S sandwiching the first elastic member 21E is absorbed by the end portions of the two folded sheets, that is, the base end portion 21B of the three-dimensional gather 21. The adhesive main body 16 is fixed to the sheet side edge portion 18A with an adhesive 21A such as a hot melt adhesive. Specifically, the side sheet 21S sandwiching the first elastic member 21E is disposed such that the distal end portion extends from the left and right end portions of the absorbent main body 16 toward the center line direction in the left and right direction, and the base end portion 21B. Are bonded by an adhesive 21A. Further, the side seat 21S is folded so that the edge on the center line side in the left-right direction at the base end portion 21B is a folded portion 21T, and the folded portion 21T to the distal end portion 21P are directed to both left and right ends of the absorbent main body 16. It is.

  As shown in FIG. 5B, the base end portion of the three-dimensional gather 21 is fixed to the sheet side edge portion 18A of the absorbent main body 16 with the adhesive 21A also in the lower side region 12FD and the back side lower region 12RD. . In the crotch portion 10C, the abdominal lower region 12FD, and the back lower region 12RD, the side seat 21S that sandwiches the first elastic member 21E only needs to be able to stand up as a three-dimensional gather 21 in the skin contact direction. The side sheet 21S sandwiching the first elastic member 21E is non-adhered from the tip 21P to the folded portion 21T so that the three-dimensional gather 21 can rise. The side sheet 21S sandwiching the first elastic member 21E can raise the non-adhered portion if at least the first elastic member 21E1 closest to the folded portion 21T from the tip 21P is non-adhered. As the non-bonded portion up to the tip portion 21P is longer, the rising height of the three-dimensional gather 21 becomes higher, and the tip portion 21P can be firmly brought into contact with the skin.

  As shown in FIG. 5 (c), in the ventral upper region 12FU and the dorsal upper region 12RU, the first elastic member 21E does not exist, and the entire region from the tip 21P to the folded portion 21T of the side seat 21S is based. It is fixed to the end portion 21B and the sheet side edge portion 18A by an adhesive 21A to form a seal portion 21C. In addition, the whole area | region from the front-end | tip part 21P of the side sheet 21S to the folding | turning part 21T may be adhere | attached with the 2nd adhesive agent 25 and a series of adhesive agents. Further, the bonding of the base end portion 21B to the sheet side edge portion 18A and the sealing portion 21C may be heat welding.

  Further, the sheet side edge portion 18A of the absorbent main body 16 is configured by folding back both side edge portions along the front-rear direction of the cover sheet 20 to the center side. As shown in FIG. 2A, the folded sheet side edge portion 18 </ b> A includes a leg gather 23. The leg gathers 23 are configured by sandwiching a second elastic member 23E extending in the front-rear direction of the absorbent main body 16 at the sheet side edge 18A. And the front-end | tip part overlapped with the folded back cover sheet 20 is adhere | attached with the adhesive agent 23C (refer Fig.5 (a)-(c)). The adhesive 23C is integrated with the second adhesive 25 in the ventral lower region 12FD and the dorsal lower region 12RD, and the ventral upper region 12FU and the dorsal upper region 12RU.

  The second elastic member 23E also extends from the ventral lower region 12FD to the back lower region 12RD via the crotch portion 10C in a state where a plurality of the second elastic members 23E are parallel to each other and the hot melt adhesive is applied and extended. Extended. Specifically, the front end portion of the second elastic member 23E is located closer to the abdominal upper region 12FU than the end portion of the abdominal lower region 12FD on the crotch portion 10C side, and is inseparated from the abdominal upper region 12FU. It is located on the part 10C side, that is, the ventral lower region 12FD. In this example, the front end portion of the second elastic member 23E is located at the end portion of the ventral lower region 12FD on the ventral upper region 12FU side. Further, the rear end portion of the second elastic member 23E is located on the back side upper region 12RU side than the end portion on the crotch portion 10C side of the back side lower region 12RD, and the crotch portion 10C is located on the back side upper region 12RU. On the side, that is, the back lower region 12RD. In this example, the rear end portion of the second elastic member 23E is located at the end portion of the back lower region 12RD on the back upper region 12RU side. The front end portion and the rear end portion of the second elastic member 23E may be positioned on the upper region 12FU, 12RU side with respect to the end portion on the crotch portion 10C side of the lower regions 12FD, 12RD. For example, the second elastic member 23E When the front end portion and the rear end portion are positioned in the upper regions 12FU and 12RU, the range of the leg gathers 23 can be made wider.

  The end portions in the front-rear direction of the leg gathers 23 (the seat side edge 18A where the second elastic member 23E does not exist) are the ventral upper region 12FU and the ventral lower region 12FD, and the dorsal upper region 12RU and the dorsal lower region 12RD. In the entire region that overlaps with the ventral upper region 12FU and the dorsal upper region 12RU, the distance from the tip (the left and right ends of the absorbent main body 16) to the root (the end close to the center line in the left-right direction) It adhere | attaches on the sheet | seat (abdominal side inner sheet | seat part 25F and back side inner sheet | seat part 25R) which comprises an exterior body with the 2nd adhesive agent 25 (refer FIG.5 (c)).

  In addition, each end in the front-rear direction of the leg gathers 23 extends from the tip (the left and right ends of the absorbent main body 16) to the root (center line in the left-right direction) in a region overlapping the ventral lower region 12FD and the back lower region 12RD. Is not adhered to the sheet constituting the exterior body, and only the front end portion of the folded portion is second adhered to the sheet (abdominal side inner sheet portion 25F and back side inner sheet portion 25R). It is adhered by the agent 25 (see FIG. 5B). In this way, the portion from the front end portion of the leg gather 23 to the second elastic member 23E1 closest to the root portion is not at least with respect to the sheets constituting the exterior body (the abdominal side internal seat portion 25F and the back side internal seat portion 25R). It is said to be bonded. Thereby, the leg gathers 23 are provided in the ventral lower region 12FD and the dorsal lower region 12RD with respect to the sheets (the ventral inner seat portion 25F and the dorsal inner seat portion 25R) that form the exterior body from the tip portion to the root portion. Compared to the case where it is fully bonded, it can stand up.

  In the diaper 10 as described above, the ventral outer sheet portion 26F and the ventral inner sheet portion 25F are provided across the ventral upper region 12FU and the ventral lower region 12FD. The back side outer seat portion 26R and the back side inner seat portion 25R are also provided across the back side upper region 12RU and the back side lower region 12RD. The abdomen outer sheet portion 26F and the abdomen inner sheet portion 25F, the dorsal outer sheet portion 26R and the dorsal inner sheet portion 25R are joined by the joining portion 11. Thereby, also when putting on the diaper 10, it can prevent that a leg approachs into the clearance gap between an upper area | region and a lower area | region, and the diaper 10 becomes difficult to wear.

  Here, the state of the three-dimensional gather 21 and the leg gather 23 in a state where the diaper 10 is worn as described above will be described. As shown in FIG. 6A, in the crotch part 10C, the leg gathers 23 rise to, for example, a substantially vertical state in the skin contact direction due to the contraction of the second elastic member 23E, and the front end portion of the seat side edge 18A is in the crotch. Abut. Along with this, the three-dimensional gather 21 also rises, for example, at an acute angle (V-shape) in the skin contact direction (height direction) with respect to the sheet side edge 18A due to the contraction of the first elastic member 21E. A groove 23 </ b> A is formed between the three-dimensional gather 21 and the leg gather 23.

  As shown in FIG. 6 (b), the leg gather 23 is not as large as the crotch portion 10C in the abdominal lower region 12FD and the dorsal lower region 12RD, but the leg gathers 23 against the abdominal inner seat portion 25F and the dorsal inner seat portion 25R. It rises in the skin contact direction, and the front end of the sheet side edge 18A contacts the base of the leg. Accordingly, the three-dimensional gather 21 also rises, for example, at an acute angle (V-shape) in the skin contact direction (height direction) with respect to the sheet side edge 18A. The groove 23A between the three-dimensional gather 21 and the leg gather 23 is also formed in the ventral lower region 12FD and the back lower region 12RD continuously from the crotch portion 10C.

  As shown in FIG. 6 (c), the second elastic member 23E of the leg gather 23 is not arranged in the abdominal upper region 12FU and the back upper region 12RU, and the seat side edge 18A By contracting the internal elastic portions 27F and 27R, the internal elastic portions 27F and 27R are bent up so as to follow the shape of the abdomen and waist. Further, the first elastic member 21E of the three-dimensional gather 21 is not arranged. The side sheet 21S of the three-dimensional gather 21 that does not include the first elastic member 21E is bonded to the inner surface of the absorbent main body 16 in the entire region that overlaps the ventral upper region 12FU and the back upper region 12RU. Therefore, the three-dimensional gather 21 stands up flexibly with the seat side edge 18A. Then, following the rise of the three-dimensional gather 21 in the ventral upper region 12FU and the dorsal upper region 12RU, the ventral lower region 12FD and the dorsal lower region 12RD, and the leg gather 23 and the three-dimensional gather 21 of the crotch 10C are also firmly raised. Further, the groove 23A disappears not in the abdominal side upper region 12FU and the back side upper region 12RU because the entire region of the side sheet 21S of the three-dimensional gather 21 is bonded to the inner surface of the absorbent main body 16. That is, the end of the groove 23A is the boundary between the upper regions 12FU and 12RU and the lower regions 12FD and 12RD.

  As shown in FIG. 6A, in the crotch 10C, the three-dimensional gather 21 is located on the inner side and the leg gather 23 is located on the outer side. The liquid 23B such as urine, which is excrement, may get over the three-dimensional gather 21 and enter between the three-dimensional gather 21 and the leg gather 23 in the crotch 10C. The liquid 23B between the three-dimensional gather 21 and the leg gather 23 passes along the groove 23A between the three-dimensional gather 21 and the leg gather 23 when the posture of the wearer changes, and the ventral upper region 12FU and the back upper region It flows in the direction of 12RU. Then, in the ventral upper region 12FU and the back upper region 12RU, since the three-dimensional gather 21 is bonded to the seat side edge 18A, the groove 23A is eliminated, and the liquid 23B is absorbed in the pockets 30F and 30R. It will flow in the direction (D1 direction).

As mentioned above, according to the said embodiment, the effect enumerated below can be acquired.
(1) The front body 10F and the back body 10R are divided into upper regions 12FU, 12RU and lower regions 12FD, 12RD, the internal elastic portions 27F, 27R are disposed inside the absorbent main body 16, and the external elastic portions 28F, 28R are absorbent. In the diaper 10 arranged outside the main body 16, a three-dimensional gather 21 and a leg gather 23 can be arranged. Thereby, the leakage from the leg periphery can be suppressed.

  (2) As for the three-dimensional gather 21, the front end part of the 1st elastic member 21E is located in the edge part by the side of the abdominal side upper area | region 12FU of the abdominal side lower area | region 12FD, and a rear end part is the back side upper part of the back side lower area | region 12RD. It is located at the end of the region 12RU side. Further, the second elastic member 23E of the leg gather 23 also has a front end portion located at an end portion on the ventral upper region 12FU side of the ventral lower region 12FD, and a rear end portion thereof on the back upper region 12RU of the back lower region 12RD. Located at the end of the side. That is, the range in which the first elastic member 21E and the second elastic member 23E are arranged in the front-rear direction is substantially the same range. Thereby, the three-dimensional gather 21 and the leg gather 23 can be made to function in the range from the crotch 10C to the opening ends of the pockets 30F and 30R, and excrement can be reliably guided in the direction of the pockets 30F and 30R.

  (3) In the three-dimensional gather 21, in the abdominal side upper region 12FU and the back side upper region 12RU, the entire region from the front end portion 21P to the folded portion 21T of the side seat 21S is fixed with an adhesive, thereby forming a seal portion 21C. Therefore, in the upper region, when worn, the three-dimensional gather 21 rises with the rise of the seat side edge 18A in which the leg gathers 23 are configured, and further follows the rise to provide the abdominal lower region 12FD and the back lower region. 12RD and the three-dimensional gather 21 of the crotch part 10C can also stand up firmly. Thereby, the leakage from the leg periphery can be suppressed.

  (4) The seat side edge portion 18A is bent so as to follow the shape of the abdomen and waist by contracting the inner elastic portions 27F and 27R of the wearer's waist in the abdomen upper region 12FU and the dorsal upper region 12RU. Stand up. Following the rise of the ventral upper region 12FU and the dorsal upper region 12RU, the leg gathers 23 in the ventral lower region 12FD and the dorsal lower region 12RD extend from the tip (the left and right ends of the absorbent main body 16) to the root ( Since the space between the end portion close to the center line in the left-right direction) is not bonded to the ventral inner sheet portion 25F and the dorsal inner sheet portion 25R constituting the exterior body, the ventral inner sheet portion 25F and the dorsal side It is possible to stand up with respect to the inner sheet portion 25R. Thereby, the leakage from the leg periphery can be suppressed.

  (5) The liquid 23B that has entered the groove 23A between the three-dimensional gather 21 and the leg gather 23 travels along the groove 23A when the wearer's posture changes, and then the ventral upper region 12FU and the back upper region 12RU. It flows in the direction of. When the liquid 23B reaches the end point of the boundary portion between the upper regions 12FU and 12RU and the lower regions 12FD and 12RD, the groove 23A disappears, so that the direction of the absorption region (direction D1) in the pockets 30F and 30R. And is absorbed by the absorber 18. Therefore, the liquid 23B that has entered the groove 23A can be prevented from leaking out from the leg gathers 23.

  (6) In the ventral upper region 12FU and the dorsal upper region 12RU, the inner elastic portions 27F and 27R are not bonded to the end region 16A of the absorbent main body 16 in the pockets 30F and 30R. The upper elastic member 15FU and the back-side upper elastic member 15RU can freely expand and contract. Therefore, the adhesion between the abdominal upper region 12FU, the back upper region 12RU, and the skin is improved, and the followability to the wearer's movement can be improved. As a result, it is possible to suppress the occurrence of abdominal leakage and back leakage. Further, the expansion and contraction of the abdominal upper elastic member 15FU and the back upper elastic member 15RU is not limited, so that the touch in the abdominal upper region 12FU and the back upper region 12RU can be improved.

  (7) Since the abdominal external elastic part 28F and the back external elastic part 28R are further arranged below the abdominal internal elastic part 27F and the back internal elastic part 27R, the waist gathers and tammy gathers are enlarged. The occurrence of abdominal leakage and back leakage can be suppressed.

(8) Since the absorptive main body 16 includes the cover sheet 20 as the outermost sheet, the touch on the outer surface of the crotch part 10C can be improved.
(9) The abdominal pocket 30F is large and deep with respect to the back pocket 30R, can secure a sufficient volume for storing excrement such as urine, and can suppress the occurrence of abdominal leakage.

  (10) The ventral outer sheet portion 26F and the ventral inner sheet portion 25F are provided across the ventral upper region 12FU and the ventral lower region 12FD. The back side outer seat portion 26R and the back side inner seat portion 25R are also provided across the back side upper region 12RU and the back side lower region 12RD. The abdomen outer sheet portion 26F and the abdomen inner sheet portion 25F, the dorsal outer sheet portion 26R and the dorsal inner sheet portion 25R are joined by the joining portion 11. Thereby, also when putting on the diaper 10, it can prevent that a leg approachs into the clearance gap between an upper area | region and a lower area | region, and the diaper 10 becomes difficult to wear. Moreover, when discarding the diaper 10, the joining part 11 can be broken and it can remove | separate from a wearer by the operation | work which tears both the abdominal exterior body 12F and the back | dorsal exterior body 12R at both ends of a waistline direction.

In addition, the said embodiment can also be suitably changed and implemented as follows.
The absorbent main body 16 may be configured to omit either the back sheet 17 or the cover sheet 20.

The size of the back side pocket 30R may be the same as the size of the ventral side pocket 30F, or the back side pocket 30R may be larger than the ventral side pocket 30F.
-It is good also as a structure which abbreviate | omits either the pockets 30F and 30R or both.

  -The shape of the pockets 30F and 30R is not particularly limited as long as it can prevent and accommodate the infiltration of excrement. For example, the pockets 30F and 30R may have an Ω shape as a whole with the width of the opening ends of the pockets 30F and 30R narrowed, for example. Thereby, it can suppress that the excrement which entered pockets 30F and 30R returns. In addition, the width of the opening ends of the pockets 30F and 30R may be wider than the side on the waistline opening 10A side.

  In the diaper 10, only the upper regions 12FU and 12RU may be elastic portions having elastic members arranged in the waist direction, or only the lower regions 12FD and 12RD may be elastic portions having elastic members arranged in the waist direction. Further, in the configuration opposite to that of the above-described embodiment, the inner elastic portion may be configured in the lower regions 12FD and 12RD, and the outer elastic portion may be configured in the upper regions 12FU and 12RU.

-The sheet | seat which comprises the ventral | abdominal exterior body 12F and the back | dorsal exterior body 12R may be liquid-impermeable, and may be liquid-permeable.
In the diaper 10, when the strength of the waist opening 10 </ b> A can be increased to such an extent that there is no risk of being broken by a single sheet, the ventral inner sheet portion 25 </ b> F and the back inner sheet portion 25 </ b> R are end regions 16A may not be connected in series at an inner position and an outer position. That is, the waistline opening portion 10A may be configured by only the abdominal outer sheet portion 26F and the back outer sheet portion 26R.

  In the abdominal side upper region 12FU and the back side upper region 12RU, the side sheet 21S that does not sandwich the first elastic member 21E of the three-dimensional gather 21 is not the entire region, but is partially an adhesive with respect to the sheet side edge 18A It may be fixed by 21A. In this case, the folded back side seat 21S of the ventral upper region 12FU and the back upper region 12RU hardly rises because the first elastic member 21E is not disposed. Therefore, the side sheet 21S is in a state substantially the same as when all the areas are completely bonded to the sheet side edge 18A, and no groove 23A is formed in the abdominal upper area 12FU and the dorsal upper area 12RU. Therefore, the liquid 23B in the groove 23A in the crotch part 10C can also flow in the direction of the absorption region (D1 direction) in the ventral upper region 12FU and the dorsal upper region 12RU.

  The leg gathers 23 are not configured by folding the side edges of the cover sheet 20 and sandwiching the second elastic member 23E between them, for example, both side edges along the front-rear direction of the cover sheet 20 and the back sheet 17 It may be configured such that both side edges along the longitudinal direction of the top sheet 19 are overlapped and the second elastic member 23E is sandwiched therebetween.

  The end of the second elastic member 23E may be located above the end of the upper regions 12FU, RU on the crotch 10C side as long as the leg gathers 23 are raised.

  -It is sufficient that at least one of the abdominal exterior body 12F and the back exterior body 12R includes an upper region and a lower region, and only one of the abdominal exterior body 12F and the back exterior body 12R is an upper region. It is good also as a structure provided with an area | region and a lower area | region.

  The end portion in the front-rear direction of the three-dimensional gather 21 is configured to adhere the entire region from the distal end portion 21P to the folded portion 21T of the three-dimensional gather 21 to the base end portion 21B side in the region overlapping the upper region. In a region overlapping with the region, a part from the distal end portion 21P to the folded portion 21T of the side sheet 21S may be bonded to the proximal end portion 21B side. For example, you may make it make the intermediate part and front-end | tip of the front-end | tip of the side sheet | seat 21S, and the folding | turning part 21T non-adhesion to the base end part 21B side.

  The absorbent article is not limited to a pant diaper in which the abdominal exterior body 12F and the back exterior body 12R are separated, but is a pant diaper in which the abdominal exterior body and the back exterior body are integrated. Moreover, it is not limited to a pants-type diaper, and may be a tape-type diaper. Moreover, the disposable diaper for adults, such as an elderly person and a disabled person for infants or those who require nursing care, may be used.

  10A ... waistline opening, 10C ... crotch, 10F ... front body, 10L ... leg opening, 10R ... back body, 10W ... waistline, 11 ... joint, 12F ... ventral side exterior body, 12FD ... belly side bottom Region, 12FU ... ventral upper region, 12R ... dorsal exterior body, 12RD ... dorsal lower region, 12RU ... dorsal upper region, 15FD ... ventral lower elastic member, 15FU ... ventral upper elastic member, 15RD ... dorsal side Lower elastic member, 15RD1 ... back lower elastic member, 15RU ... back upper elastic member, 16 ... absorbent main body, 16A ... end region, 17 ... back sheet, 18 ... absorber, 18A ... sheet side edge, 18B ... peripheral part, 18F ... ventral end, 18F ... end, 18R ... dorsal end, 18R ... end, 19 ... top sheet, 20 ... cover sheet, 21 ... solid gather, 21A ... adhesive, 21B ... Proximal end, DESCRIPTION OF SYMBOLS 1C ... Seal part, 21E ... 1st elastic member, 21E1 ... 1st elastic member, 21P ... Tip part, 21S ... Side sheet, 21T ... Folding part, 22A ... 1st adhesion area, 22B ... 2nd adhesion area, 22C ... 3rd adhesion area | region, 23 ... Leg gather, 23A ... Groove, 23B ... Liquid, 23C ... Adhesive agent, 23E ... 2nd elastic member, 24 ... 1st adhesive agent, 25 ... 2nd adhesive agent, 25F ... Abdominal side internal sheet part , 25R ... back side internal seat part, 26F ... ventral side external sheet part, 26R ... back side external sheet part, 27F ... vent side internal elastic part, 27F ... internal elastic part, 27R ... back side internal elastic part, 27R ... inside Elastic part, 28F ... ventral external elastic part, 28F ... external elastic part, 28R ... dorsal external elastic part, 28R ... external elastic part, 30F ... ventral pocket, 30R ... dorsal pocket, 34 ... margin part, 36 ... Abdomen, 37 ... depression 38 ... back, 39 ... buttocks.

Claims (4)

A first exterior part, a second exterior part, and an absorbent main body in which an end region in the front-rear direction is overlapped and bonded to the first exterior part and the second exterior part, and the first exterior part and the first exterior part In the absorbent article in which the absorbent main body located between two exterior parts constitutes the crotch part,
At least one of the first exterior part and the second exterior part includes an upper region constituting a waistline portion and a lower region located below the upper region,
The absorbent body is
A three-dimensional gather that is disposed on both sides along the front-rear direction and includes the crotch part, and sandwiches a first elastic member extending in the front-rear direction with a side seat extending in the front-rear direction A three-dimensional gather whose base end is bonded to the inner surface of the absorbent main body,
Leg gathers sandwiching the second elastic member extending in the front-rear direction at the both side edge portions with a sheet,
The end portion of the first elastic member is on the upper region side than the end portion on the crotch portion side of the lower region, and on the crotch portion side than the end portion on the crotch portion side of the upper region. Located in
An absorbent article in which an end of the second elastic member is located closer to the upper region than an end of the lower region on the crotch part side. The end in the front-and-rear direction of the three-dimensional gather is a region that overlaps the upper region, and a part of the region extending from the tip of the three-dimensional gather to the folded portion is bonded to the base end. Absorbent articles. The end in the front-rear direction of the three-dimensional gather is a region overlapping the upper region, and the entire region extending from the distal end portion to the folded portion of the three-dimensional gather is bonded to the base end side. Absorbent article. The upper region includes an internal elastic portion located inside the end region,
The lower region includes an external elastic portion that is located outside the end region and is bonded to an outer surface of the end region;
The internal elastic portion is non-bonded in a region overlapping with the end region, and is bonded to a sheet portion located outside the end region around the end region,
The absorbent article according to any one of claims 1 to 3, wherein a pocket having an open end on the crotch part side is formed between the internal elastic portion and the end region.

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