JP2019111198A - Disposable diaper - Google Patents

Abstract

To provide a disposable diaper capable of suppressing leakage from parts around legs.SOLUTION: A disposable diaper includes: three-dimensional gathers 21 which have first elastic members 21E extending in a back and forth direction and side sheets 21S gripping the first elastic members 21E; and leg gathers 23 having second elastic members 23E extending in a back and forth direction and a sheet side edge part 18A gripping the second elastic members 23E. Inside a pocket provided inside an exterior body, end parts in the back and forth direction of the three-dimensional gathers 21 and the leg gathers 23 are positioned. The three-dimensional gathers 21 are provided with base end parts 21B where the side sheets 21S gripping the first elastic members 21E are adhered to an absorbent body 16. The base end parts 21B are positioned near a center line P away from the second elastic member 23E1 that is closest to the center line P in the horizontal direction X, so that an exposure part 23C exposing an inner surface of the absorbent body 16 is configured, and an absorber 18 extends the position of the exposure part 23C.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a disposable diaper provided with solid gathers and leg gathers.

  As shown in Patent Document 1, a disposable diaper as an absorbent article includes a first exterior body forming a front body, a second exterior body forming a back body, and a front end portion joined to the first exterior body. And an absorbent main body including a rear end portion joined to the second exterior body. The first exterior body and the second exterior body have the absorbent main body bent in two, and both ends of the first and second exterior bodies in the direction around the body are joined to each other, so that the upper end portion is around the body And a leg opening at the lower end. An elastic member such as thread rubber is disposed along the circumference of the trunk of the first sheath and the second sheath along the circumference of the trunk. In addition, the absorbent main body is an inner surface in contact with the skin of the absorbent main body, and the three-dimensional gathers are disposed at both ends along the front-rear direction. In addition, the absorbent main body includes leg gathers configured by sandwiching an elastic member extending in the front-rear direction with sheets at both side edges along the front-rear direction. The leg gathers are located at the leg-surrounding openings when attached. The leg gathers and the solid gathers are configured by sandwiching an elastic member such as thread rubber with a sheet.

Patent No. 4996508

  By the way, in the disposable diaper, excrement may flow into the groove between the solid gather and the leg gather. When the wearer changes the posture while the excrement flows into the groove between the solid gather and the leg gather, a gap is generated around the leg, causing the excrement to leak from the leg.

  An object of the present invention is to provide a disposable diaper capable of suppressing leakage around the legs.

  The disposable diaper for solving the said subject is the end of the front-back direction which overlaps with the 1st exterior body which constitutes a front body, the 2nd exterior body which constitutes a back body, the 1st exterior body, and the 2nd exterior body. What is claimed is: 1. A disposable diaper comprising: an absorbent main body having a part region, a crotch located between the first exterior body and the second exterior body, and an absorbent body, wherein at least one of the absorbent main bodies A pocket located in the end region and having an open end facing the crotch, and a solid gather provided on an inner surface of the absorbent main body and along each side edge along the front-rear direction, The three-dimensional gathers each including the first elastic member extending in the front-rear direction and the first sheet sandwiching the first elastic member, and each side edge along the front-rear direction of the absorbent main body Leg gather installed in The leg gathers each including a second elastic member extending in the front-rear direction and a leg gather having a second sheet sandwiching the second elastic member, and the solid gather and the leg gathers are disposed inside the pocket The three-dimensional gather is provided with a base end on which the first sheet sandwiching the first elastic member is adhered to the inner surface of the absorbent main body; An exposed portion for exposing the inner surface of the absorbent main body is configured between the leg gather and the absorbent body, and the absorber extends to the position of the exposed portion in the left-right direction of the absorbent main body.

  According to the above configuration, the excrement flows in the direction of the pocket and is stored until it is absorbed by the absorber. When the wearer changes his posture, the excrement flows to the left and right corners of the pocket and from there flows into the groove between the solid gather and the leg gather. The excrement which has flowed into the ditch is absorbed by the absorber through the exposed portion. Thereby, leakage from around the legs can be suppressed.

In the disposable diaper, the absorbent main body includes a top sheet in contact with the skin, a back sheet on the side opposite to the skin, and the absorber positioned between the top sheet and the back sheet. In the solid gather, the base end is adhered to the top sheet, the top sheet is liquid-permeable, the first sheet is liquid-impermeable, and the top sheet is exposed at the exposed portion. It is good also as composition which is carried out.
According to the above configuration, in the exposed portion, the absorber is absorbed through the top sheet.

In the disposable diaper, the exposed portion is provided in the crotch portion, and the absorber extends to the position of the exposed portion in the crotch portion in the left-right direction of the absorbent main body. It is also good.
According to the above configuration, it is possible to absorb excrement that has flowed into the groove in the crotch.

In the disposable diaper, the exposed portion is provided in the end region, and the absorber extends to the position of the exposed portion in the end region in the left-right direction of the absorbent main body It is good also as composition.
According to the above configuration, the excrement that has flowed into the groove can be absorbed in the end region.

In the disposable diaper, a plurality of the second elastic members are provided, and the second elastic member positioned at the outermost side in the left-right direction of the absorbent main body is the back in the left-right direction of the absorbent main body It may be configured to be located outside the sheet.
According to the above configuration, in the portion where the back sheet does not exist, since the back sheet does not exist, the flexibility is enhanced, and the leg gather tends to rise.

In the above-described disposable diaper, at least one of the first and second exterior bodies includes an upper region and a lower region that form the waist portion of the disposable diaper, and the upper region is preferably made of An inner elastic portion located inside with respect to the end region, the lower region comprising an outer elastic portion located outside with respect to the end region, the inner elastic portion overlapping with the end region Non-adhesive in the area, glued to the sheet part located outside the end area around the end area, between the inner elastic part and the end area The pocket may be configured.
According to the said structure, a pocket can be comprised between an inner side elastic part and the said end area | region.

In the disposable diaper, the absorber may extend to a position overlapping the pocket in the front-rear direction.
According to the above configuration, excrement can be absorbed even in the pocket.

  According to the present invention, it is possible to provide a disposable diaper capable of suppressing leakage around the legs.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the underpants-type disposable diaper in 1st Embodiment which materialized the absorptive main body of this invention. (A) is a top view which shows the unfolded state of the underpants type disposable diaper of FIG. 1, (b) is sectional drawing in alignment with the 2B-2B line of (a). (A) is a top view which shows the adhesion area | region of the upper area | region of the diaper of FIG. 1 corresponding to Fig.2 (a), (b) shows the adhesion area | region of the lower area | region of the diaper of FIG. The top view shown corresponding to. The principal part sectional view in the state where the diaper of Drawing 1 was equipped. (A) is a cross-sectional view taken along line 5-5 of FIG. 2 (a), (b) is a cross-sectional view of a reference example, and (c) is a view showing a state where the leg gathers rise from the state of (a) Sectional drawing along 5-5 line of a). The top view which shows the flow direction of the excretion in the unfolded state of the underpants type disposable diaper of FIG. The top view which shows the unfolded state of the modification of the diaper which provided the notch part in the absorber corresponding to Fig.2 (a). The top view which shows the unfolded state of the modification of the diaper which was made not to extend an absorber to a back side pocket corresponding to Fig.2 (a).

The underpants-type disposable diaper in one Embodiment which materialized the disposable diaper in this invention with reference to FIGS. 1-8 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 abdominal shape of the human body and a shape that follows the back shape of the human body It comprises a back body 10R and a crotch 10C connecting a front body 10F and a back body 10R.

  A portion of the front body 10F opposite to the crotch 10C constitutes a waist portion 10W surrounding a portion around the waist of the human body, and the upper end is provided with a waist opening 10A. The left and right end portions of the front body 10F, the left and right end portions of the back body 10R, and the left and right end portions of the crotch portion 10C constitute a pair of left and right leg openings 10L having a shape surrounding the thigh of the human body. ing. Further, left and right end portions of the front body 10F and the back body 10R in the waist-surrounding direction are joint portions 11.

  Fig.2 (a) is a top view which shows the unfolded state of a pants-type disposable diaper, (b) is sectional drawing in alignment with the 2B-2B line of (a). In FIG. 2 (b), the right side is the skin side of the diaper wearer, that is, the side closer to the skin of the wearer.

  The torso portion 10W in the front body 10F is constituted by a ventral side exterior body 12F as a ventral side first exterior body, and the torso portion 10W in the back body 10R is a dorsal side exterior as a second side exterior body It is composed of body 12R.

  The ventral-side exterior body 12F and the back-side exterior body 12R have a rectangular shape whose longitudinal direction is the left-right direction X, which is the waist-surrounding direction. The sheet constituting the outer package is, for example, a non-woven fabric made of synthetic fibers using polyethylene, polypropylene, polyester, or other thermoplastic resin as a raw material, and is either a liquid-permeable sheet or a liquid-impervious sheet. May be The ventral-side exterior body 12F is configured such that the ventral-side upper elastic member 15FU and the ventral-side lower elastic member 15FD are sandwiched between the sheets constituting the ventral-side exterior body 12F. The back side exterior body 12R is also configured by sandwiching the back side upper elastic member 15RU and the back side lower elastic member 15RD between the sheets constituting the back side exterior body 12R. These elastic members 15FU, 15FD, 15RU, 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 or string shape. A plurality of elastic members 15FU, 15FD, 15RU, 15RD are disposed parallel to each other along the left-right direction X.

  The ventral-side exterior body 12F and the back-side exterior body 12R are connected by the absorptive main body 16 which comprises the crotch 10C. The absorbent main body 16 has a rectangular shape in which the longitudinal direction Y is a longitudinal direction. As shown in FIG. 2 (b), 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 an outer cover sheet 20. 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 covers the back sheet 17. Be placed outside. Then, in the absorbent main body 16, the cover sheet 20, the back sheet 17, the absorber 18, and the top sheet 19 are overlapped in this order from the outside.

  The material forming the back sheet 17 is, for example, a film made of a liquid-impervious polyethylene resin. The back sheet 17 is formed with a large number of fine holes in order to secure air permeability. The material forming the top sheet 19 and the cover sheet 20 is, for example, one or more materials selected from woven fabric, non-woven fabric, porous film and the like. In addition, the top sheet 19 is, for example, a fiber of thermoplastic resin such as polypropylene, polyethylene, polyester, nylon, etc., and a non-woven fabric having liquid permeability composed of fibers subjected to a hydrophilization treatment is used. . Since the cover sheet 20 is the outermost sheet and is a sheet that touches the user, the cover sheet 20 is made of a non-woven fabric or the like that improves the 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 compact of absorbent material and a core wrap for wrapping the compact. The molded article of the absorbent material forming the absorbent body 18 is, for example, a molded absorbent material such as fluff pulp, super absorbent polymer, hydrophilic sheet and the like. Also, the core wrap is made of tissue or non-woven fabric. Then, the absorber 18 is disposed and joined between the back sheet 17 and the top sheet 19. The absorber 18 is extended between the ventral exterior body 12F and the dorsal exterior body 12R, and includes a ventral end 18F and a dorsal end 18R. The ventral end 18F extends to the ventral upper region 12FU, and the dorsal end 18R extends to the dorsal upper region 12RU. Further, the absorber 18 extends in the left-right direction X to between the base end 21B of the solid gather 21 and the leg gather 23 (see FIG. 5A). In the absorber 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 large around the absorbent body 18, and the absorbent main body 16 has a central region in which the absorbent body 18 is disposed, Absorber 18 is not disposed and includes a peripheral region (peripheral portion). The both-sides edge extended in the front-back direction Y in the absorptive main body 16 is the sheet | seat side edge 18A in which the absorber 18 is not arrange | positioned. The sheet side edge portion 18A is configured, for example, by overlapping the back sheet 17, the top sheet 19, and the cover sheet 20. Further, as an example, the sheet side edge portion 18A is configured such that both side edge portions of the cover sheet 20 extending in the front-rear direction Y are folded inward in the direction of the center line P in the left-right direction X. Further, the inner surface and the outer surface of the region overlapping the outer coverings 12F and 12R in the front-rear direction Y of the absorbent main body 16 become an end region 16A to which the sheet constituting the outer covering is adhered.

The ventral exterior body 12F includes a ventral upper region 12FU and a ventral lower region 12FD. The dorsal exterior body 12R also includes a dorsal upper region 12RU and a dorsal 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 inside of the absorbent main body 16, that is, the top sheet 19 It is disposed on the side, and constitutes a part of the waist opening 10A and the waist portion 10W. In the ventral lower region 12FD and the dorsal lower region 12RD, the ventral lower elastic member 15FD and the dorsal lower elastic member 15RD are disposed outside the absorbent main body 16, that is, on the back sheet 17 or the cover sheet 20 side. , And a part of the waist portion 10W.

  In the ventral-side upper region 12FU, a plurality of ventral-side upper elastic members 15FU extend in the lateral direction X between the sheets whose longitudinal direction is the waist-surrounding direction (between the ventral-side outer sheet portion 26F and the belly-side internal sheet portion 25F). It is arrange | positioned in the state extended over the left and right both ends. In the back upper region 12RU, the plurality of back upper elastic members 15RU extend in the left-right direction X between the sheets (between the back outer sheet portion 26R and the back inner sheet portion 25R) in the left-right direction. It is arrange | positioned in the extended state over the left and right both ends in X. As shown in FIG.

  Further, in the belly-side lower region 12FD, the plurality of belly-side lower elastic members 15FD extend in the left-right direction X between the sheets (between the belly-side outer sheet portion 26F and the belly-side inner sheet portion 25F) in the left-right direction. It is disposed across the left and right ends in X. In the lower back region 12RD, the plurality of back lower elastic members 15RD extend in the left-right direction X between the sheets (between the back outer sheet portion 26R and the back inner sheet portion 25R) in the left-right direction. It is disposed across the left and right ends in X. The elastic members 15FU, 15FD, 15RU, and 15RD constitute waist gathers and tummy gathers in the waist portion 10W, and suppress the occurrence of belly leakage and back leakage.

  As shown in FIG. 2 (b), the ventral lower region 12FD and the dorsal lower region 12RD are directly adhered to the cover sheet 20 of the end region 16A of the absorbent main body 16. As shown in FIG. 2A, the ventral lower elastic member 15FD is arranged in an unextended state, for example, in a cut state, on the end region 16A. Further, most of the lower back elastic members 15RD are arranged in the non-extended state, for example, in the cut state, on the end region 16A. Thereby, the absorbent main body 16 is restrained from shrinking and forming a fold in the absorbent main body 16 in accordance with the contraction of the ventral lower elastic member 15FD and the back lower elastic member 15RD. Can. And it can control that a crevice arises between absorptive main part 16 and skin, and belly leak and a back leak can be controlled.

  The plurality of back lower elastic members 15RD1 located along the lower end of the back upper region 12RU near the back upper region 12RU among the plurality of back lower elastic members 15RD are the back side of the absorber 18 The end 18R is disposed in an extended state, that is, in an uncut state. Therefore, in the region in which the back lower elastic member 15RD1 is disposed, the fold 16B can be formed in the back end 18R. At the back end 18R where the folds 16B are formed, the thickness of the absorber 18 is thicker than in the region where the folds 16B are not formed, and the open end of the back pocket 30R described later is pushed by the buttocks and is difficult to close Become. In addition, the folds 16B can function as a guide for guiding the back side pocket 30R.

  As shown in FIG. 2B, the ventral-side upper region 12FU comprises a ventral-side inner elastic portion 27F by sandwiching the ventral-side upper elastic member 15FU with a sheet (a belly-side outer sheet portion 26F and a belly-side inner sheet portion 25F). doing. Also, in the ventral-side lower region 12FD, a ventral-side outer elastic portion 28F is configured by sandwiching the ventral-side lower elastic member 15FD with a sheet (a belly-side outer sheet portion 26F and a belly-side inner sheet portion 25F). The ventral upper region 12FU and the ventral lower region 12FD are connected in series by a ventral outer sheet portion 26F and a ventral inner sheet portion 25F.

  The back upper portion 12RU constitutes the back inner elastic portion 27R by sandwiching the back upper elastic member 15RU between the sheets (the back outer sheet portion 26R and the back inner sheet portion 25R). Further, in the back lower region 12RD, the back lower elastic member 15RD is sandwiched between the sheets (the back outer sheet portion 26R and the back inner sheet portion 25R) to form the back outer elastic portion 28R. The back upper region 12RU and the back lower region 12RD are connected in series by the back outer sheet portion 26R and the back inner sheet portion 25R.

  The ventral outer sheet portion 26F and the dorsal outer sheet portion 26R are located on the outermost side opposite to the skin, and are the sheets that are bent inward at the portion of the waist opening 10A and located on the most skin side. . The ventral inner sheet portion 25F and the dorsal inner sheet portion 25R are sheets that face the ventral outer sheet portion 26F and the dorsal outer sheet portion 26R.

  The ventral outer sheet portion 26F and the ventral inner sheet portion 25F constituting the ventral inner elastic portion 27F sandwich the ventral upper elastic member 15FU and the ventral lower elastic member 15FD, and are bonded by the first adhesive 24. ing. The folded-back portions of the belly-side outer sheet portion 26F and the belly-side inner sheet portion 25F constitute the waist opening 10A, and the waist opening 10A is formed by stacking two sheets (sheets) to increase the strength ( See FIG. 2 (b) in part A).

  The back outer sheet portion 26R and the back inner sheet portion 25R constituting the back inner elastic portion 27R sandwich the back upper elastic member 15RU and the back lower elastic member 15RD, and are adhered to each other by the first adhesive 24. It is done. The folded-back portions of the back outer sheet portion 26R and the back inner sheet portion 25R constitute a waist opening 10A, and the waist opening 10A is formed by overlapping two sheets to increase the strength (see FIG. 2 (b) see middle part A).

  In the ventral inner elastic portion 27F and the dorsal inner elastic portion 27R, the ventral inner sheet portion 25F and the dorsal inner sheet portion 25R are not adhered to the top sheet 19 in the end region 16A. In the ventral-side inner elastic portion 27F and the dorsal-side inner elastic portion 27R, the ventral-side inner sheet portion 25F folded back at the waist opening 10A is formed by the second adhesive 25 in the region around the end region 16A. Be glued. In addition, the cover sheet 20 in the end area 16A is also adhered to the abdominal inner sheet portion 25F by the second adhesive 25.

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

  Further, in the ventral-side inner elastic portion 27F in the ventral-side upper region 12FU, the ventral-side inner sheet portions 25F folded around the first bonding region 22A at the waist opening 10A are attached by the second adhesive 25. The area to be adhered is the second adhesion area 22B. Further, in the back side inner elastic portion 27R in the back side upper region 12RU, a region where the back side inner sheet portions 25R folded back at the waist opening 10A are bonded by the second adhesive 25 is a second bonding region 22B. It becomes. The second adhesion region 22B in the ventral inner elastic portion 27F and the back inner elastic portion 27R has a recess shape facing the crotch portion 10C by being located around the end region 16A. In the inner portion of the concave shape, the ventral inner elastic portion 27F and the dorsal inner elastic portion 27R become a non-adhesive portion which is not adhered to the top sheet 19 in the end region 16A. Thus, 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. A back pocket 30R is formed between the back inner sheet portion 25R of the back inner elastic portion 27R and the top sheet 19 of the end region 16A.

  These pockets 30F, 30R have open ends on the crotch 10C side, and are configured to be able to accommodate excrement such as urine or feces moving in the direction of the belly or back. In addition, the second bonding area 22B includes a margin 34 having a predetermined width between the waist opening 10A and the tip of the end area 16A in the front-rear direction Y, and the waste stored in the pockets 30F and 30R It is suppressed that an object leaks in the direction of 10 A of torso openings.

  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 outer elastic portion 28F and the dorsal outer elastic portion 28R. The area where the portion 25R is adhered to the back sheet 17 in the end area 16A is a third adhesion area 22C.

  Here, the sizes of the ventral pocket 30F and the dorsal pocket 30R will be described. As shown in FIG. 4, for example, the body of an infant has a recess 37 in the crotch portion on the abdomen 36 side, and the buttocks 39 protrude on the back 38 side. Therefore, the open end of the ventral pocket 30F is likely to be in an open state when the crotch portion is depressed, and the excrement is also likely to flow into the ventral pocket 30F. In addition, the ventral pocket 30F tends to receive a large amount of liquid such as urine, and if it is too small, it causes an abdominal leak. Therefore, the ventral side pocket 30F is made large and deep with respect to the back side pocket 30R, and a sufficient volume for containing excrement such as urine is secured to suppress the occurrence of abdominal leak. Then, when discarding the diaper 10, the ventral pocket 30F is accommodated in a state in which a portion other than the ventral pocket 30F is rounded.

  Further, since the back side pocket 30R is small and shallow relative to the ventral side pocket 30F, the open end of the back side pocket 30R is less likely to be blocked by the buttocks 39.

  The ventral end 18F of the absorber 18 can absorb excrement that has flowed into the ventral pocket 30F by extending to the vicinity of the deepest portion of the ventral pocket 30F. The dorsal end 18R of the absorber 18 can absorb excrement that has flowed into the dorsal pocket 30R by extending to the vicinity of the deepest part of the dorsal pocket 30R.

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

  Moreover, as shown to Fig.5 (a), the solid gathers 21 are arrange | positioned on the inner surface of the absorptive main body 16, ie, the top sheet 19, in the both ends which follow the front-back direction Y. As shown in FIG. Each three-dimensional gather 21 includes a first elastic member 21E extending in the front-rear direction Y of the absorbent main body 16, and a side sheet 21S as a first sheet sandwiching the first elastic member 21E. The first elastic members 21E are arranged with respect to the side sheet 21S in a state in which a plurality of the first elastic members 21 are parallel to each other and in which the hot melt adhesive is applied and stretched, and the side sheet 21S is folded in half. It is sandwiched by the side seat 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 made of the same sheet as the top sheet 19 and the cover sheet 20, and is made of, for example, a long sheet extending in the front-rear direction Y including a liquid impermeable non-woven fabric or the like.

  The side sheet 21S has a length straddling the ventral upper region 12FU, the crotch 10C, and the dorsal upper region 12RU in the front-rear direction Y. Therefore, each end in the front-rear direction Y of the side seat 21S is located inside the ventral pocket 30F and the dorsal pocket 30R. Specifically, it is an inner edge extending in the front-rear direction Y of the ventral pocket 30F and the dorsal pocket 30R, and is located at the deepest portion of the ventral pocket 30F and the dorsal pocket 30R. The first elastic member 21E has a length shorter than the length of the side sheet 21S in the front-rear direction Y and straddling the ventral lower region 12FD, the crotch 10C, and the dorsal lower region 12RD (FIG. a) see).

  As shown in FIG. 5A, the side sheet 21S sandwiches the first elastic member 21E in a state of being folded in half. The respective end portions of the folded and overlapped side sheets 21S, that is, the base end portions 21B of the solid gathers 21 are fixed to the left and right direction end portions of the absorbent main body 16 by an adhesive such as a hot melt adhesive. The side sheet 21S sandwiching the first elastic member 21E includes a proximal end 21B and a distal end 21P opposite to the proximal end 21B. Furthermore, the side sheet 21S is folded back so that the edge close to the center line P in the base end 21B is the folded-back portion 21T, and from the folded-back portion 21T to the distal end 21P faces both ends in the left-right direction X of the absorbent main body 16 It is done. The side sheet 21S sandwiching the first elastic member 21E is unbonded from the tip end portion 21P to the folded back portion 21T, and the three-dimensional gather 21 can be stood up. When the solid gather 21 is worn by the wearer, the solid gather 21 stands up in the skin contact direction with respect to the absorbent main body 16 by the contraction force of the first elastic member 21E. The solid gather 21 is not limited to the double structure from the proximal end 21B to the distal end 21P as shown in FIG. 5A, and only the distal end 21P may have a double structure. Good. Further, as shown in FIG. 5 (a), the solid gathers 21 absorb the side sheet 21S with the edge close to the center line P at the base end 21B as the folded portion 21T, from the folded portion 21T to the tip 21P. The back end 21P of the main body 16 is folded back so as to face both ends in the left and right direction X. However, the present invention is not limited to this. The tip 21P is the inside in the left and right direction X of the absorbent main body 16 (center line P It may be configured to face the side).

  Note that the first elastic member 21E does not exist in the ventral upper region 12FU and the dorsal upper region 12RU that are inside of the ventral pocket 30F and the dorsal pocket 30R. Then, the entire region from the leading end 21P of the side sheet 21S to the folded back portion 21T is fixed to the base end 21B or the sheet side edge 18A by an adhesive or heat welding to form a seal 21C (FIG. 2) See (a)).

  Further, the sheet side edge portion 18A of the absorbent main body 16 is configured by folding back both side edge portions of the cover sheet 20 in the front-rear direction Y to the center side. The folded sheet side edge 18 A is provided with a leg gather 23. The leg gathers 23 are configured by sandwiching a second elastic member 23E extending in the front-rear direction Y of the absorbent main body 16 at the sheet side edge 18A. The respective edges of the cover sheet 20 as the second sheet folded back and positioned on the center side are bonded by an adhesive in a range extending from the ventral upper region 12FU to the dorsal upper region 12RU. The leg gathers 23 are located at the inner edge of the ventral pocket 30F and the back pocket 30R extending in the front-rear direction Y.

  The second elastic member 23E also extends from the ventral lower region 12FD to the dorsal lower region 12RD via the crotch region 10C in a state in which a plurality of the second elastic members 23 are parallel to each other and the hot melt adhesive is applied and stretched. Extended. The top sheet 19 is exposed to the outside between the second elastic member 23E1 near the center line P in the left-right direction X and the base end 21B of the solid gather 21 at both side edges in the left-right direction X of the absorbent main body 16 It becomes part 23C. The exposed portion 23C is provided in a range extending from the ventral upper region 12FU to the dorsal upper region 12RU in the front-rear direction Y. Also in the leg gathers 23, the tip in the front-rear direction Y is located inside the ventral pocket 30F and the dorsal pocket 30R.

  FIG.5 (b) shows the diaper as a reference example. Conventionally, as in the reference example, the base end 21B of the solid gather 21 is positioned at the sheet side edge 18A and overlaps the leg gather 23. The side sheet 21S is made of a non-woven fabric or the like having liquid impermeability so that the excrement does not flow out in the direction of the leg gathers 23. Therefore, the base end 21B of the solid gather 21 overlaps the position of the leg gathers 23, and even when the excrement flows into the groove 23D between the solid gather 21 and the leg gathers 23 at the time of wearing, the excrement is It is hardly absorbed by the absorbent body 16. This is because the exposed portion 23C as shown in FIG. 5A does not exist.

  In this respect, in FIG. 5A, the base end 21B where the side sheet 21S sandwiching the first elastic member 21E is adhered to the inner surface of the absorbent main body 16 is absorbed between the base end 21B and the leg gathers 23. The exposed portion 23C is configured to expose the inner surface of the main body 16. As an example, the base end portion 21B includes an exposed portion 23C between the proximal end portion 21B and the second elastic member 23E1 closest to the center line P of the absorbent main body 16 of the leg gathers 23. In the exposed portion 23C, the liquid-permeable top sheet 19 is exposed, and in the exposed portion 23C, an absorber 18 extends in the portion of the top sheet 19. Therefore, as shown in FIG. 5C, when the diaper 10 is worn, even if excrement flows into the V-shaped groove 23D between the solid gather 21 and the leg gather 23 that rise in the skin contact direction. The excrement 23X is absorbed by the absorber 18 through the top sheet 19 of the exposed portion 23C, so that side leakage from around the legs can be suppressed.

  Note that, among the plurality of second elastic members 23E, the second elastic member 23E2 farthest from the center line P is positioned to protrude from the back sheet 17. As a result, in the sheet side edge portion 18A, the portion where the back sheet 17 does not exist is more flexible because the back sheet 17 is not present, and the elastic force of the second elastic member 23E2 makes it easier to stand up. A plurality of second elastic members 23E protruding from the back sheet 17 may be provided.

Next, the operation of the diaper 10 configured as described above will be described.
When the diaper 1 is attached, the second elastic member 23E extends, and the inner elastic portions 27F and 27R pull the sheet side edge 18A toward the center line P, whereby the leg gathers 23 rise. Further, even in the solid gather 21, the first elastic member 21E extends and stands up. The leg opening 10L has a double structure of two gathers.

  In the diaper 10, when excrement such as urine is discharged, the diaper 10 flows through the inner surface of the absorbent main body 16 in the crotch region 10C in the ventral and dorsal directions. FIG. 6 conceptually shows the flow direction of the excrement in the unfolded state of the diaper 10. Although the excrement is absorbed by the absorbent body 18 through the top sheet 19, it flows in the direction of the deepest part of the ventral pocket 30F and the deepest part of the dorsal pocket 30R, and unless absorbed by the absorbent body 18, each pocket Retain in the deepest part of 30F and 30R.

  Here, when the wearer turns over and the posture changes, excrement stored in the deepest part of the pockets 30F and 30R is directed toward the corner part (B part) in the left and right direction X of the pockets 30F and 30R. Flow. The deepest portion of the pockets 30F and 30R is a seal portion of the solid gather 21 and is a portion where the base end 21B and the surface of the top sheet 19 are substantially flush. And in the solid gather 21, the first elastic member 21E is not disposed, and it is not a place where the side sheet 21S stands up. Therefore, the excrement which flowed to the corner part of left-right direction X flows into groove 23D (refer to Drawing 5 (c)) between solid gathers 21 and leg gathers 23 which stand up from the corner concerned. The position of the groove 23D is provided with an exposed portion 23C in which the base end portion 21B of the solid gather 21 does not exist. Therefore, the excrement is absorbed by the absorbent 18 through the top sheet 19 even if it flows into the groove 23D. In this embodiment, the absorber 18 is present at the exposed portion 23C, at the crotch 10C, at the lower regions 12FD and 12RD, and at the upper regions 12FU and 12RU. Therefore, the excrement can be absorbed by the absorber 18 regardless of where the wearer moves and the excrement of the groove 23D moves to any position.

As mentioned above, according to the said embodiment, the effect listed below can be acquired.
(1) The absorber 18 extends from the position of the exposed portion 23C, ie, from the center line P to the position of the exposed portion 23C, in the left-right direction X of the absorbent main body 16 in the left-right direction X. Therefore, even if excrement flows into the groove 23D between the solid gather 21 and the leg gather 23, the excrement can be absorbed by the absorber 18. Therefore, lateral leakage from around the legs can be suppressed.

(2) In the exposed portion 23C, the excrement 23X can be absorbed by the absorber 18 through the top sheet 19.
(3) When the wearer stands up, the excrement that has flowed into the groove 23D between the solid gather 21 and the leg gather 23 tends to accumulate at the crotch 10C. In this respect, since the exposed portion 23C is provided also in the crotch portion 10C and the absorber 18 is disposed below the exposed portion 23C, the excrement accumulated in the crotch portion 10C portion of the groove 23D is absorbed from the exposed portion 23C. It can be absorbed by the body 18.

  (4) When the wearer turns over, etc., it tends to accumulate in the corner portion in the left-right direction X at the deepest portion of the pockets 30F, 30R. In this respect, the exposed portions 23C are provided also in the pockets 30F and 30R (portions of the end regions 16A), and the absorber 18 is disposed below the exposed portions 23C. The excrement accumulated in the corner portion (B portion) can be absorbed by the absorber 18 from the exposed portion 23C.

  (5) Of the plurality of second elastic members 23E, the second elastic member 23E2 farthest from the center line P is located outside the back sheet 17. As a result, in the sheet side edge portion 18A, the portion where the back sheet 17 does not exist is more flexible because the back sheet 17 is not present, and it becomes easier to stand up due to the contraction force of the second elastic member 23E2. Side leakage can be suppressed.

(6) In the upper regions 12FU and 12FU, the inner elastic portions 27F and 27R located inside with respect to the end region 16A are provided, and for the lower regions 12FD and 12RD, the outside elastic located outside with respect to the end region 16A By providing the portions 28F, 28R, the pockets 30F, 30R can be provided between the end region 16A and the inner elastic portions 27F, 27R. Therefore, the leak from the waist can be suppressed.
(7) The excrement that has entered the pockets 30F, 30R can also be absorbed by the absorber 18.

In addition, the said embodiment can also be changed suitably as follows and can also be implemented.
As shown in FIG. 7, the absorber 18 may be provided with a notch 18C which escapes from the base of the leg at the crotch 10C. In this case, in the crotch 10C, the absorber 18 may not be located below the exposed portion 23C. However, the absorber 18 is configured to be located below the exposed portion 23C of the position (end area 16A) of the upper area 12FU, 12RU in which the lower areas 12FD, 12RD and the pockets 30F, 30R are provided. In such a case, the excrement 23X having flowed into the groove 23D is absorbed by the absorber 18 at the exposed portion 23C in the end region 16A.

  -Contrary to the example of FIG. 7, the absorber 18 may have a configuration in which the absorber 18 is present below the exposed portion 23C only at the crotch 10C. In such a case, the excrement which has flowed into the groove 23D is absorbed by the absorber 18 at the exposed portion 23C of the crotch portion 10C.

  As shown in FIG. 8, the absorber 18 may be disposed in the ventral pocket 30F, and the absorber 18 may not be disposed in the dorsal pocket 30R. Also, conversely to this, the absorber 18 may not be disposed in the ventral pocket 30F, and the absorber 18 may be disposed in the back pocket 30R. Further, as shown in FIG. 2 and the like, the absorbent body 18 may be present in the ventral pocket 30F or in the region of the dorsal pocket 30R, or absent in both the ventral pocket 30F and the dorsal pocket 30R. May be

The size of the back pocket 30R may be the same as the size of the ventral pocket 30F, or the back pocket 30R may be larger than the ventral pocket 30F.
The configuration may be such that either of the pockets 30F and 30R is omitted.

  The number of the second elastic members 23E2 located outside the back sheet 17 is not particularly limited, and may be one or more as in the above-described example. . In addition, the second elastic member 23E protruding outside the back sheet 17 may not be provided.

The configuration of the absorbent main body 16 is not particularly limited as long as the inner surface in contact with the skin is liquid absorbent and the absorbent body 18 is provided. For example, the back sheet 17 may be omitted by making the cover sheet 20 liquid impermeable.
The side sheet 21S may be liquid permeable. In this case, the excrement which has flowed into the groove 23D through the solid gather 21 can be absorbed into the absorber 18 through the exposed portion 23C.

  The shape of the pockets 30F and 30R is not particularly limited as long as the inflow of waste can be prevented and accommodated. For example, the pockets 30F and 30R may have an Ω shape, for example, in which the width of the open ends of the pockets 30F and 30R is narrowed. Thereby, it can suppress that the excretion which entered pocket 30F, 30R returns. In addition, the width of the open end of the pocket 30F, 30R may be wider than the side on the side of the cylinder opening 10A.

  -Either the outer package 12F or the outer package 12R may be configured to include the upper regions 12FU and 12RU and the lower regions 12FD and 12RD, and any of the outer packages may also be the upper region 12FU, The configuration may not be divided into 12 RU and lower regions 12 FD and 12 RD.

  -In diaper 10, when it is possible to exert strength to the extent that there is no risk of the portion of waist opening 10A being broken by one sheet, for example, ventral inner sheet portion 25F and dorsal inner sheet portion 25R are end portions It does not have to be connected in series at the inner position and the outer position with respect to the region 16A. That is, the portion of the waist opening 10A may be constituted only by the ventral outer sheet portion 26F and the dorsal outer sheet portion 26R.

  -As a pants type diaper, it can be applied also to a two-piece structure of an absorbent main body and an exterior body in which a ventral side and a back side are connected by a crotch portion, provided with a solid gather 21, a leg gather 23 and a pocket. Moreover, not only a pants-type diaper but a tape-type diaper may be used. In addition, it may be a disposable diaper for infants or adults such as elderly people and disabled people who need nursing care.

  P: center line, X: lateral direction, Y: longitudinal direction, 10F: front body, 10R: rear body, 10W: waist portion, 10A: trunk opening, 10L: leg opening, 10C: crotch, 11 junction part 12F ventral exterior body 12FD ventral lower region 12FU ventral upper region 12R dorsal side exterior body 12 RD dorsal lower region 12 RU dorsal upper region 15FD belly Lower side elastic member, 15FU: ventral upper elastic member, 15RD, 15RD1: dorsal lower elastic member, 15RU: dorsal upper elastic member, 16: absorbent main body, 16A: end region, 17: back sheet, 18: ... Absorbent body, 18A: sheet side edge portion, 18C: notch portion, 18F: ventral side end portion, 18R: dorsal side end portion, 19: top sheet, 20: cover sheet, 21: solid gather, 21B: base end portion, 21C ... seal part, 2 E: first elastic member, 21P: tip portion, 21S: side sheet, 21T: folded portion, 22A: first adhesive region, 22B: second adhesive region, 22C: third adhesive region, 23: leg gather, 23C: exposed Parts, 23D: groove, 23E, 23E1, 23E2: second elastic member, 23X: excrement, 24: first adhesive, 25: second adhesive, 25F: abdominal side internal sheet portion, 25R: dorsal side internal sheet Portions 26F: ventral outer sheet portion 26R: dorsal outer sheet portion 27F: ventral inner elastic portion 27R: dorsal inner elastic portion 28F: ventral outer elastic portion 28R: dorsal outer elastic portion 30F: ventral side pocket, 30R: dorsal side pocket, 34: margin portion, 36: abdomen, 37: dent portion, 38: back, 39: buttock.

Claims (7)

A first exterior body constituting a front body,
A second exterior body that constitutes the back body,
Absorbent body having an end region in the front-rear direction overlapping with the first exterior body and the second exterior body, a crotch located between the first exterior body and the second exterior body, and an absorbent body And a disposable diaper comprising
A pocket located in at least one of the end regions of the absorbent body and having an open end facing the crotch;
A solid gather provided on an inner surface of the absorbent main body and along each side edge along the longitudinal direction, wherein the respective solid gathers extend along the longitudinal direction, a first elastic member, and the first elastic member. The solid gather having the first sheet sandwiching the elastic member;
A leg gather provided at each side edge along the longitudinal direction of the absorbent main body, wherein the respective leg gathers include a second elastic member extending in the longitudinal direction and a second sheet sandwiching the second elastic member. And the above-mentioned leg gathers,
The ends of the solid gather and the leg gather in the front-rear direction are located inside the pocket,
The three-dimensional gather includes a proximal end on which the first sheet sandwiching the first elastic member is adhered to the inner surface of the absorbent main body, and the absorbent main body between the proximal end and the leg gather Configure an exposed part that exposes the inner surface,
The said absorbent body is a disposable diaper extended to the position of the said exposure part in the left-right direction of the said absorptive main body. The absorbent main body includes a top sheet in contact with the skin, a back sheet on the side opposite to the skin, and the absorber positioned between the top sheet and the back sheet.
In the solid gather, the base end is adhered to the top sheet,
The top sheet is liquid permeable, and the first sheet is liquid impermeable,
The disposable diaper according to claim 1, wherein the top sheet is exposed at the exposed portion. The exposed portion is provided at the crotch.
The disposable diaper according to claim 1, wherein the absorbent body extends to the position of the exposed portion in the crotch in the left-right direction of the absorbent main body. The exposed portion is provided in the end region,
The disposable diaper according to any one of claims 1 to 3, wherein the absorber extends to the position of the exposed portion in the end region in the left-right direction of the absorbent main body. A plurality of second elastic members are provided,
The second elastic member positioned outermost in the left-right direction of the absorbent main body is positioned outside the back sheet of the absorbent main body in the left-right direction of the absorbent main body. The disposable diaper according to any one of the preceding claims. At least one of the first exterior body and the second exterior body is provided with an upper region and a lower region constituting a waist portion of the disposable diaper,
The upper region comprises an inner elastic portion located inside relative to the end region,
The lower region comprises an outer resilient portion located outwardly with respect to the end region,
The inner elastic portion is non-adhesive in a region overlapping with the end region, and is bonded to a sheet portion located outside with respect to the end region around the end region,
The disposable diaper according to any one of claims 1 to 5, wherein the pocket is configured between the inner elastic portion and the end region. The disposable diaper according to claim 6, wherein the absorber extends to a position overlapping the pocket in the front-rear direction.

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