JP6610712B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  In the disposable diaper, the abdominal exterior part constituting the front body, the back exterior part constituting the back body, the front end part is joined to the abdominal exterior part, and the rear end part is joined to the back exterior part. Some have an absorbent main body. And as shown to patent document 1, the pocket which used the crotch part side as the open end is comprised by the inner surface which contact | connects a wearer's abdomen, and the inner surface which contact | connects a back part in a disposable diaper. A pocket accommodates the excrement which entered from the opening end, and suppresses the back leak from which the excrement leaks from the abdomen and the back leak which leaks from the back.

JP 2006-101322 A

  By the way, for example, an infant's body shape has a hollow part in the crotch part on the abdomen side, and a buttocks on the back part side. Therefore, the open end of the pocket on the abdomen side is likely to be opened because the crotch portion is depressed, and excrement can easily enter the pocket. Further, a lot of liquid such as urine tends to flow into the ventral pocket, and if it is too small, it causes abdominal leakage.

  On the other hand, the open end of the pocket on the back side is easily blocked by the protruding buttock, and excrement is less likely to flow into the pocket, causing back leakage. Such body characteristics tend to be close to this even in adults.

  An object of this invention is to provide the absorbent article which made it possible to suppress the leakage of excrement.

An absorbent article for solving the above problems includes an abdominal exterior part covering the abdomen, a back exterior part covering the back part, and an absorbent body extending between the abdominal exterior part and the back exterior part. The absorptive main body is provided with the adherent main body provided with the adherend portions overlapping the abdominal exterior part and the back exterior part at both ends of the absorptive main body in the front-rear direction. The back-side exterior portion includes a back-side upper region and a back-side lower region located on the crotch side with respect to the back-side upper region, and the back-side upper region includes an internal elastic portion, and the internal elastic portion Includes a plurality of upper elastic members extending in the waistline direction and arranged in the vertical direction, and a sheet sandwiching the upper elastic members, and the upper elastic members are located on the inner side on the skin side of the absorbent main body. The dorsal lower region is not located outside the absorbent main body, and includes an external elastic portion, the external elastic portion extending in the waist direction and arranged in the vertical direction, and the lower elastic member, A sheet sandwiching a lower elastic member, wherein the lower elastic member is located outside the absorbent main body, not located inside the absorbent main body, and the internal elastic portion is located on the adherend portion. And non-adhering to the periphery of the adherend And a pocket whose open end faces the crotch side is formed on the adherend portion by being adhered to the external sheet portion located outside the absorbent main body, and the external elastic portion is the adherend portion It is adhered to parts, while the lower elastic member of the plurality book contains lower elastic members which are not cut in a region overlapping with the absorbent body.

  According to the said structure, a pleat can be formed in the back side part of an absorber. The portion where the pleats are formed is thicker than the region where no pleats are formed. Thereby, even if the back side exterior body is pressed by the buttocks in the supine state, the back side portion of the absorber can be provided with a gap portion in the vicinity of the back side portion by the thickness of the absorber. The open end of the back pocket can be positioned in the part. Therefore, it is possible to prevent the open end of the back pocket from being blocked by the buttocks. Further, by forming a fold on the back portion of the absorber, it becomes a fold guide groove and excrement such as urine can be guided to the back pocket.

  The said absorbent article WHEREIN: The back side edge part of the said absorber is good also as a structure located in the crotch side rather than the opening end of the said pocket. According to the said structure, the reduction | decrease in the capacity | capacitance of a pocket can be suppressed rather than the case where an absorber exists in a pocket.

  The said absorbent article WHEREIN: It is good also as a structure by which the lower elastic member located along the lower end part of the said dorsal upper area | region among the said several said lower elastic members is not cut | disconnected. According to the said structure, a pleat can be formed in the absorber near the back side edge part of an absorber, ie, the open end of a back side pocket.

  The said absorbent article WHEREIN: It is good also as a structure where all the said lower elastic members are not cut | disconnected. According to the said structure, a pleat can be formed in the back side part of an absorber long in the front-back direction.

  In the absorbent article, the back upper region includes a sheet lower end portion composed only of a sheet sandwiching the upper elastic member on the crotch side rather than the upper elastic member on the most crotch side, the lower end portion of the seat, It is good also as a structure which has overlapped with the back side edge part of the said absorber.

  According to the present invention, it is possible to suppress leakage of excrement.

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. The principal part sectional drawing of the vicinity of a back side pocket. Sectional drawing of the underpants type disposable diaper in 2nd Embodiment. Sectional drawing of the underpants type disposable diaper in 3rd Embodiment. Sectional drawing of the underpants type disposable diaper in 4th Embodiment. Sectional drawing of the underpants type disposable diaper in 5th Embodiment. Sectional drawing of the underpants type disposable diaper in 6th Embodiment. Sectional drawing of the underpants type disposable diaper in 7th Embodiment. Sectional drawing of the underpants type disposable diaper in 8th Embodiment. Sectional drawing of the underpants type disposable diaper in 9th Embodiment. (A) is a top view which shows the expansion | deployment state of the underpants type disposable diaper in 10th Embodiment, (b) is aa sectional drawing of (a).

With reference to FIG. 1 thru | or FIG. 14, the underpants type disposable diaper in one Embodiment which actualized the absorbent article in this invention is demonstrated.
[First Embodiment]
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 10C constitutes a waist part 10W that surrounds a part around the body of the human body, and a waist opening 10A is provided 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. Further, the left and right end portions of the front body 10F and the back body 10R in the trunk periphery 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 waist part 10W in the front body 10F is configured by a ventral side exterior body 12F as a ventral side exterior part, and the waist part 10W in the back body 10R is configured by a back side exterior body 12R as a back side exterior part. Yes.

  The ventral-side exterior body 12F and the back-side exterior body 12R have a rectangular shape with the trunk circumference direction as the longitudinal 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 the elastic members 15FU, 15FD, 15RU, and 15RD are arranged in parallel to each other along the trunk circumference 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 includes a back sheet 17 having liquid impermeability, an absorber 18, and a top sheet 19 having liquid permeability. In the diaper 10, the top sheet 19 is disposed on the inner side in contact with the wearer's skin, and the back sheet 17 is disposed on the outer side. And in the diaper 10, it has overlapped in order of the back sheet | seat 17, the absorber 18, and the top sheet 19 from the outer side. Furthermore, a non-woven fabric may be arranged on the outside of the back sheet 17 in order to improve the touch feeling.

  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 forming the top sheet 19 is one or more materials selected from, for example, a woven fabric, a nonwoven fabric, and a porous film. 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. .

  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 formed by molding an absorbent material such as flap pulp, superabsorbent polymer, and hydrophilic sheet. The core wrap is made of tissue or non-woven fabric. 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 absorbent main body 16 includes a peripheral portion 18 </ b> A of the absorber 18. The peripheral portion 18A is a region where the absorber 18 is not disposed, and is a region where the back sheet 17 and the top sheet 19 overlap. An inner surface and an outer surface of a region overlapping the exterior bodies 12F and 12R in the front-rear direction of the absorbent main body 16 are bonded portions 16A to which a sheet constituting the exterior body is bonded. 16 A of to-be-adhered parts are the both ends of the front-back direction of the absorptive main body 16, Comprising: It is an area | region including the abdominal side edge part 18F and the back side edge part 18R of the absorber 18. FIG.

  The absorbent main body 16 is provided with three-dimensional gathers 21 at both ends along the front-rear direction. The three-dimensional gather 21 is configured by disposing side sheets 21S on both ends of the top sheet 19 along the front-rear direction and elastic members 21E along the front-rear direction on the side sheet 21S. Specifically, the side sheet 21 </ b> S is a long sheet body that extends in the front-rear direction including a liquid-impermeable nonwoven fabric or the like. The side seat 21S is disposed such that the front end portion overlaps with the ventral-side exterior body 12F and the rear end portion overlaps with the back-side exterior body 12R. When the elastic member 21E contracts, the three-dimensional gather 21 rises toward the wearer's skin contact direction and is positioned around the leg opening 10L.

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 periphery part 10W. The abdomen lower region 12FD and the dorsal lower region 12RD are configured such that the abdomen lower elastic member 15FD and the dorsal lower elastic member 15RD are disposed outside the absorbent main body 16, that is, on the back seat 17 side. Part of 10W.

  The front end portion and the rear end portion of the three-dimensional gather 21 are formed on the absorptive main body 16 from the lower end on the crotch portion 10C side of the abdominal lower region 12FD and the back lower region 12RD to the abdominal upper region 12FU and the back upper region 12RU. It is extended to the middle. The side sheets 21S constituting the three-dimensional gather 21 are folded back so as to sandwich the elastic member 21E, and the front end portion and the rear end portion of the folded back are sealed by the seal portion 23.

  In the ventral upper region 12FU, a plurality of ventral upper elastic members 15FU are disposed across the left and right ends in the waistline direction between the sheets whose longitudinal direction is the waistline direction. In the back-side upper region 12RU, a plurality of back-side upper elastic members 15RU are arranged across the left and right end portions in the waist-around direction between the sheets whose longitudinal direction is the waist-around direction.

  In the ventral lower region 12FD, a plurality of ventral lower elastic members 15FD are disposed across the left and right ends in the waistline direction between sheets whose longitudinal direction is the waistline direction. In the lower back region 12RD, a plurality of lower back elastic members 15RD are arranged across the left and right ends in the waist direction between the sheets whose longitudinal direction is the waist direction. These elastic members 15FU, 15FD, 15RU, and 15RD constitute waist gathers and tammy gathers, and suppress the occurrence of abdominal leakage and back leakage.

  As shown in FIG. 2B, the abdominal lower region 12FD and the back lower region 12RD are directly bonded to the back sheet 17 of the bonded portion 16A in the absorbent main body 16. As shown in FIG. 2A, the abdomen lower elastic member 15FD is arranged on the adherend portion 16A in an unextended state, for example, a cut state. In addition, most of the back-side lower elastic members 15RD are arranged on the bonded portion 16A in an unextended state, for example, a cut state. Thereby, the absorptive main body 16 can suppress that the absorptive main body 16 shrink | contracts and a pleat is formed according to shrinkage | contraction of the abdominal lower elastic member 15FD and the back lower elastic member 15RD. Thereby, it can suppress that a clearance gap produces 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. In the back end 18R where the pleats 16B are formed, the absorber 18 can be made thicker than the region where the pleats 16B are not formed.

  As shown in FIG. 2B, the ventral upper region 12FU includes a ventral internal elastic portion 27F sandwiching the ventral upper elastic member 15FU with a sheet, and the ventral lower region 12FD includes the ventral lower elastic member 15FD. Is provided with a ventral-side external elastic part 28F. Furthermore, the ventral upper region 12FU and the ventral lower region 12FD are provided with a ventral external sheet portion 26F that connects the ventral upper region 12FU and the ventral lower region 12FD in series.

  The back-side upper region 12RU also includes a back-side internal elastic portion 27R that sandwiches the back-side upper elastic member 15RU with a seat. The back-side lower region 12RD includes a back-side external elastic portion that sandwiches the back-side lower elastic member 15RD with a seat. 28R is provided. Furthermore, the back-side upper region 12RU and the back-side lower region 12RD include a back-side external seat portion 26R that connects the back-side upper region 12RU and the back-side lower region 12RD in series. 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.

  In the abdominal side internal elastic part 27F and the back side internal elastic part 27R, the abdominal side upper elastic member 15FU and the back side upper elastic member 15RU are located inside the bonded part 16A of the absorbent main body 16. The abdominal inner elastic portion 27F is configured by sandwiching the abdominal upper elastic member 15FU between the abdominal outer sheet portion 26F and the abdominal seat 27FA, and constitutes the abdominal upper region 12FU. The back side internal elastic portion 27R is configured by sandwiching the back side upper elastic member 15RU between the back side external seat portion 26R and the back side seat 27RA, and constitutes a back side upper region 12RU. In the belly side internal elastic part 27F and the back side internal elastic part 27R, the belly side sheet 27FA and the back side sheet 27RA are not bonded to the top sheet 19 of the bonded part 16A. In the ventral internal elastic portion 27F, the ventral sheet 27FA and the ventral external sheet portion 26F are bonded in a region around the bonded portion 16A. In the back side internal elastic part 27R, the back side sheet 27RA and the back side external sheet part 26R are bonded in the region around the bonded part 16A.

  In the ventral external elastic portion 28 </ b> F and the back external elastic portion 28 </ b> R, the ventral lower elastic member 15 </ b> FD and the back lower elastic member 15 </ b> RD are located outside the bonded portion 16 </ b> A of the absorbent main body 16. The ventral external elastic portion 28F is configured by sandwiching the ventral lower elastic member 15FD between the ventral external sheet portion 26F and the ventral seat 28FA, and constitutes a ventral lower region 12FD. The back-side external elastic portion 28R is configured by sandwiching the back-side lower elastic member 15RD between the back-side external seat portion 26R and the back-side seat 28RA, and constitutes the back-side lower region 12RD. In the abdominal side external elastic portion 28F and the back side external elastic portion 28R, the back sheet 17 of the bonded portion 16A is bonded to the abdominal side sheet 28FA and the back side sheet 28RA by the adhesive 25. In the ventral sheet 28FA and the back sheet 28RA, the entire surface of the back sheet 17 of the bonded portion 16A may be bonded by the adhesive 25, or by applying the adhesive 25 in the form of dots or stripes. It may be adhered.

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 region where the back sheet 17 of the bonded portion 16A in the ventral external sheet portion 26F is bonded is the first bonding region 22A. It becomes. Further, in the back-side upper region 12RU, a region where the back sheet 17 of the bonded portion 16A in the back-side external sheet portion 26R is bonded becomes the first bonding region 22A.

  Further, in the ventral upper region 12FU, the periphery of the first adhesive region 22A in the ventral external sheet portion 26F becomes the second adhesive region 22B to which the ventral sheet 27FA is bonded. Further, in the back-side upper region 12RU, the periphery of the first adhesion region 22A in the back-side external sheet portion 26R becomes the second adhesion region 22B to which the back-side sheet 27RA is adhered. The second bonding region 22B has a concave shape toward the crotch 10C side when the bonded portion 16A of the absorbent main body 16 is disposed in the first bonding region 22A. In the inner part of the concave shape, the abdominal inner elastic portion 27F becomes a non-adhesive portion with respect to the skin-side inner surface of the adherend portion 16A. Thereby, a ventral pocket 30F is formed between the ventral sheet 27FA of the ventral inner elastic part 27F and the top sheet 19 of the absorbent main body 16. Further, a back pocket 30R is formed between the back sheet 27RA of the back side internal elastic portion 27R and the top sheet 19 of the absorbent main body 16.

  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 bonding region 22B includes a band-shaped region 34 having a predetermined width between the waist opening 10A and the distal end portion in the front-rear direction of the bonded portion 16A, and the excrement stored in the pockets 30F and 30R Leaking toward the waist opening 10A is suppressed.

  Further, as shown in FIG. 3B, in the abdominal lower region 12FD and the dorsal lower region 12RD, the abdominal external elastic portion 28F and the back external elastic portion 28R are connected to the bonded portion 16A of the absorbent main body 16. A region bonded to the back sheet 17 is a third bonding region 22C.

As shown in FIG. 2A, as an example, the length L1 in the vertical direction of the ventral upper region 12FU is longer than the length L3 in the vertical direction of the back upper region 12RU.
As an example, the length L1 in the vertical direction of the ventral upper region 12FU has a length that is 1/2 or more of the length L2 in the vertical direction of the ventral exterior body 12F. The ventral upper region 12FU overlaps with the ventral end 18F in the front-rear direction of the absorber 18. That is, the ventral end 18F is positioned closer to the waistline opening 10A than the lowermost ventral upper elastic member 15FU closest to the ventral lower region 12FD (the lower end of the ventral upper region 12FU). Thereby, the ventral pocket 30F becomes large and deep, and a sufficient volume for accommodating excrement can be secured. Moreover, excrement such as urine that has entered the ventral pocket 30F can be absorbed by the absorber 18 including the ventral end 18F.

  In addition, the upper limit of the length L1 in the vertical direction of the ventral upper region 12FU is too close to the position of the open end of the ventral pocket 30F and the genital area for discharging urine, and urine does not easily enter the ventral pocket 30F. In order to prevent this, the length L2 in the vertical direction of the ventral-side exterior body 12F is preferably 4/5 or less.

  Further, the length L3 in the vertical direction of the back side upper region 12RU has a length equal to or less than ½ of the length L4 in the vertical direction of the back side exterior body 12R. As a result, the lower end of the opening end (back side upper region 12RU) of the back pocket 30R is positioned above the crack of the buttocks, and excrement such as urine that has passed through the crack enters the opening end of the back pocket 30R. Make it easy to do. Note that the lower limit of the length L3 in the vertical direction of the back side upper region 12RU is at least 1/5 of the length L4 in the vertical direction of the back side exterior body 12R in order to secure a capacity for functioning as the back side pocket 30R. It is preferable that

  Further, the back-side upper region 12RU does not overlap with the back-side end 18R in the front-rear direction of the absorber 18. That is, the back side end portion 18R does not overlap the back side upper elastic member 15RU located at the position closest to the back side lower region 12RD and at the lowest stage of the back side external elastic portion 28R. And it is located in the crotch part 10C side rather than the lowermost back | dorsal upper elastic member 15RU (lower end of the back | dorsal upper area | region 12RU). The back side end portion 18R of the absorbent body 18 thicker than the peripheral portion 18A of the absorbent main body 16 located below the back side pocket 30R constitutes a step in the vicinity of the back side end portion 18R depending on its thickness, A gap 35 (see FIG. 5) is formed by this step. The gap portion 35 prevents the open end of the back side pocket 30R from being blocked by the buttocks.

  The plurality of dorsal lower elastic members 15RD1 positioned along the lower end of the dorsal upper region 12RU near the dorsal upper region 12RU are arranged in an extended state on the dorsal end 18R of the absorber 18. A pleat 16B is formed at the back end 18R. The pleat 16B has a groove shape extending in the vertical direction, and does not disappear even when the absorber 18 swells. The back end portion 18R where the pleats 16B are formed and its peripheral portion are thicker than the region where the pleats 16B are not formed. Thereby, the space | gap part 35 becomes a bigger thing.

As described above, according to the first embodiment, the effects listed below can be obtained.
(1) As shown in FIG. 4, the body shape of the infant has a recessed portion 37 in the crotch portion on the abdomen 36 side, and a buttock portion 39 on the back portion 38 side. In this regard, the length L1 in the vertical direction of the ventral upper region 12FU has a length that is ½ or more of the length L2 in the vertical direction of the ventral exterior body 12F. In other words, the length L1 in the vertical direction of the ventral upper region 12FU is longer than the length L3 in the vertical direction of the back upper region 12RU. Therefore, the abdominal pocket 30F becomes large and deep, and a sufficient volume for accommodating excreta can be secured, and the occurrence of abdominal leakage can be suppressed. Further, the open end of the abdominal pocket 30F on the abdomen 36 side is located in the vicinity of the recessed portion 37 and is easily opened, and accordingly, excrement easily enters the abdominal pocket 30F.

  (2) The lower end portion of the ventral upper region 12FU overlaps with the ventral end portion 18F in the front-rear direction of the absorber 18. That is, the ventral end 18F overlaps with the lowermost ventral upper elastic member 15FU closest to the ventral lower region 12FD at the lower end of the ventral upper region 12FU and is waisted more than the ventral upper elastic member 15FU. It is located on the opening 10A side. Therefore, the ventral end 18F of the absorbent body 18 is located in the ventral pocket 30F. Thus, excretion such as urine that has entered the ventral pocket 30F can be absorbed by the absorber 18 by using the absorption surface of the absorber 18 without waste. Also in this respect, the occurrence of abdominal leakage can be suppressed.

  (3) On the back portion 38 side, the vertical length L3 of the back upper region 12RU is shorter than 1/2 of the vertical length L4 of the back exterior body 12R, and the length of the crevice crack 38a is short. Located on the upper side. In other words, the length L3 in the vertical direction of the back-side upper region 12RU is shorter than the length L1 in the vertical direction of the ventral upper region 12FU. Therefore, excrement such as urine that has passed through the split 38a easily enters the back pocket 30R, and the occurrence of back leakage can be suppressed.

  (4) The open end of the back pocket 30R on the back 38 side is generally easily blocked by being pressed by the protruding collar 39, and excrement tends to hardly flow into the back pocket 30R. In this regard, as shown in FIG. 5, the lower end portion of the back-side upper region 12RU does not overlap the back-side end portion 18R of the absorber 18. That is, the back side end 18R does not overlap the lowermost back side upper elastic member 15RU which is present below the back side upper region 12RU and is closest to the back side lower region 12RD, and from the back side upper elastic member 15RU. Is also located on the crotch 10C side. The backside exterior body 12R is pressed by the protruding buttock 39 when the wearer is in a supine posture. In this regard, the back side end 18R thicker than the peripheral part 18A of the absorbent main body 16 located below the back side pocket 30R constitutes a step in the vicinity of the back side end 18R according to its own thickness. A gap 35 is formed by the step. Therefore, the opening end of the back side pocket 30R on the back part 38 side can be guided to the excrement into the back side pocket 30R without being blocked by the collar part 39, and the occurrence of back leakage can be suppressed.

  (5) As shown in FIG. 5, the distance C between the back-side end portion 18R and the back-side upper elastic member 15RU located at the lowest stage is preferably not more than three times the thickness T of the back-side end portion. . Further, it is preferably 2 times or less. Thereby, the space | gap part 35 can be formed reliably. In order to form the gap portion 35, the distance C from the back-side upper elastic member 15RU is preferably at least 0.5 times the thickness T of the back-side end portion. As an example, the interval C is preferably 15 mm or less. The thickness T of the back-side end portion 18R referred to here is a thickness in a free state (no load state), and as an example, a thickness directly above the back-side lower elastic member 15RD1 closest to the back-side upper region 12RU. That's it. When the back lower elastic member 15RD1 is cut in the same manner as the other back lower elastic members 15RD, the pleats 16B are not formed. Therefore, the thickness T is the thickness at any position of the back end 18R. But you can.

  (6) The distance C between the back end 18R and the back upper elastic member 15RU located at the lowest level is preferably 20% or less of the length L4 in the vertical direction of the back exterior body 12R. Thereby, the space | gap part 35 can be formed reliably. In addition, in order to form the space | gap part 35, it is preferable that the space | interval C with the back side upper elastic member 15RU is at least 3% or more of the length L4 in the up-down direction of the back side exterior body 12R. As an example, the interval C is preferably 15 mm or less.

  (7) The one or more back-side lower elastic members 15RD1 located along the back-side upper region 12RU in the back-side lower region 12RD are arranged in an extended state. Therefore, the pleat 16B can be formed near the open end of the back pocket 30R. The back end 18R where the pleats 16B are formed has a greater thickness than when the pleats 16B are not formed. Thereby, the space | gap part 35 can be made larger, and the opening end of the back side pocket 30R can be made hard to be obstruct | occluded.

  (8) In the abdomen upper region 12FU and the dorsal upper region 12RU, the abdomen outer sheet portion 26F and the dorsal outer sheet portion 26R are bonded to the bonded portion 16A of the absorbent main body 16. That is, since the abdominal upper elastic member 15FU and the back upper elastic member 15RU and the sheet to which these elastic members are attached are not directly bonded to the adherend 16A, the abdominal upper elastic member 15FU and the back upper elastic member 15RU Can expand and contract freely. 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.

  (9) The ventral lower elastic member 15FD is disposed on the bonded portion 16A in a state where it is not extended, for example, in a cut state. In addition, most of the back-side lower elastic members 15RD are arranged on the bonded portion 16A in an unextended state, for example, a cut state. As a result, the absorbent main body 16 is not contracted and formed with pleats in accordance with the contraction of the abdominal lower elastic member 15FD and the back lower elastic member 15RD. Therefore, it can suppress that a clearance gap is produced between the absorptive main body 16 and skin, and an abdominal leak and a back leak can be suppressed. In addition, although the pleat 16B is formed by the back side lower elastic member 15RD1 near the opening end of the back side pocket 30R, the number of the pleats 16B to be formed is small. Therefore, the pleat 16B does not cause abdominal leakage or back leakage.

  (10) Around the ventral pocket 30F and the dorsal pocket 30R, the ventral external sheet portion 26F and the dorsal external sheet portion 26R are directly bonded to the ventral sheet 27FA and the dorsal sheet 27RA, and the second bonding region 22B is formed. Large area. Therefore, it can suppress that excrement leaks from an adhesion field. The second adhesive region 22B also includes a belt-like region 34 between the waist opening 10A and the abdominal pocket 30F and the back pocket 30R. Therefore, the excrement accommodated in the abdominal pocket 30F and the back pocket 30R can be prevented from leaking toward the waistline opening 10A.

  (11) The ventral pocket 30 </ b> F and the back pocket 30 </ b> R have the same size as the width of the absorbent main body 16. That is, a part of the adherend portion 16A is not used as an adhesion region. Therefore, it can suppress that the ventral side pocket 30F and the back side pocket 30R become small.

(12) Since the absorptive main body 16 can be covered with the ventral external sheet portion 26F and the back external sheet portion 26R, the design can be improved.
(13) The ventral upper region 12FU and the ventral lower region 12FD are configured in series by the ventral external sheet portion 26F. Further, the back-side upper region 12RU and the back-side lower region 12RD are configured in series by the back-side outer seat portion 26R. Therefore, a gap formed when the upper region and the lower region are divided into two at the boundary portion in the vicinity of the joint portion 11 on both the left and right sides does not occur. Therefore, even when the diaper 10 is worn, the leg does not enter the gap between the upper region and the lower region, and it is possible to suppress the diaper 10 from becoming difficult to wear.

  (14) When the diaper 10 is removed, the joint 11 is broken. Also in the junction part 11, since it is not isolate | separated into the upper area | region and the lower area | region, the junction part 11 can be broken by one operation | work.

  (15) In the ventral upper region 12FU and the ventral lower region 12FD, a series of the ventral outer sheet portion 26F and the dorsal outer sheet portion 26R are folded back at the waistline opening 10A, and the outermost position from the skin side position. It is arranged across. Therefore, it is possible to suppress the excrement accommodated in the abdominal pocket 30F and the back pocket 30R from leaking outside from the waist opening 10A.

[Second Embodiment]
As shown in FIG. 6, in the diaper 40 of the second embodiment, the ventral outer sheet portion 26F and the dorsal outer sheet portion 26R are positioned on the outermost side, and the ventral upper elastic member 15FU and the dorsal upper elastic member 15RU are It has a configuration sandwiched between a series of ventral seats 27FA and dorsal seats 27RA. In FIG. 6, the right side is the skin side of the diaper wearer.

In the diaper 40 as described above, the following effects can be further obtained.
(16) Since the abdomen upper elastic member 15FU and the back upper elastic member 15RU are sandwiched between the series of abdomen seats 27FA and 27RA, the number of parts can be reduced and the production efficiency can be improved.

[Third Embodiment]
As shown in FIG. 7, the diaper 50 of the third embodiment sandwiches the ventral upper elastic member 15FU and the dorsal upper elastic member 15RU with two separate ventral seats 27FA and 27RA, and further The two ventral seats 27FA and the back seat 27RA are both separated from the ventral external seat portion 26F and the back external seat portion 26R. In FIG. 7, the right side is the skin side of the diaper wearer.

In the diaper 50 as described above, the following effects can be further obtained.
(17) Since each of the ventral external sheet portion 26F, the dorsal external sheet portion 26R, the ventral seat 27FA, and the dorsal seat 27RA is used separately, the ventral external sheet portion 26F, the dorsal external sheet Each of the portion 26R, the ventral seat 27FA, and the dorsal seat 27RA can be used effectively. For example, sheets of different materials can be used for these sheets. In this case, as an example, soft sheets are used for the abdominal sheet 27FA and the back sheet 27RA in contact with the skin, and the outermost abdominal outer sheet part 26F and the dorsal outer sheet part 26R are used. Can use a hard sheet rich in water resistance and durability.

[Fourth Embodiment]
As shown in FIG. 8, in the diaper 60 of the fourth embodiment, the outermost abdomen outer sheet portion 26 </ b> F and the rear outer sheet portion 26 </ b> R are configured by a single sheet. In FIG. 8, the right side is the skin side of the diaper wearer.

In the diaper 60 as described above, the following effects can be further obtained.
(18) Since the abdominal-side external seat portion 26F and the back-side external seat portion 26R are configured by one external seat 26, the number of parts can be reduced.

[Fifth Embodiment]
As shown in FIG. 9, in the diaper 70 of the fifth embodiment, in the abdominal exterior body 12F, one abdominal outer sheet portion 26F sandwiches the abdominal upper elastic member 15FU and the abdominal lower elastic member 15FD. . Further, in the backside exterior body 12R, one backside external sheet portion 26R sandwiches the backside upper elastic member 15RU and the backside lower elastic member 15RD. Further, the abdominal outer sheet portion 26F and the back outer sheet portion 26R are located on the outermost side opposite to the skin, and are folded back at the waistline opening 10A and located on the most skin side. Outside, the crotch portion 10C of the ventral external elastic portion 28F and the back external elastic portion 28R extends from the ventral lower region 12FD and the back lower region 12RD to the ventral upper region 12FU and the back upper region 12RU. It is bent inward at the end on the side. On the inner side, it is bent inward at the end portions on the crotch 10C side of the abdominal inner elastic portion 27F and the back inner elastic portion 27R. In FIG. 9, the right side is the skin side of the diaper wearer.

In the diaper 70 as described above, the following effects can be further obtained.
(19) It is only necessary to use one abdominal outer sheet portion 26F in the abdominal exterior body 12F, and only one backside external sheet portion 26R is used in the back side exterior body 12R. Therefore, the number of parts can be reduced and the manufacturing process can be simplified.

[Sixth Embodiment]
As shown in FIG. 10, in the diaper 80 of the sixth embodiment, in the diaper 70 of the fifth embodiment, the end portions of the abdominal-side external seat portion 26F and the back-side external seat portion 26R, each of which is composed of one sheet, are inside. The end portions of the abdominal side outer seat portion 26F and the back side outer seat portion 26R are folded back to the outside. In FIG. 10, the right side is the skin side of the diaper wearer. Even in the diaper 80 as described above, the same effect as the diaper 70 of the fifth embodiment can be obtained.

[Seventh Embodiment]
As shown in FIG. 11, the diaper 90 of the seventh embodiment is a modification of the diaper 40 of the second embodiment shown in FIG. 6, and the ventral external seat portion 26 </ b> F and the back external seat portion 26 </ b> R are the outermost. The ventral lower elastic member 15FD and the back lower elastic member 15RD are sandwiched. Further, the abdomen inner elastic part 27F and the dorsal inner elastic part 27R are sandwiched between one abdominal sheet 27FA and the dorsal sheet 27RA. In FIG. 12, the right side is the skin side of the diaper wearer.

In the diaper 90 as described above, the following effects can be further obtained.
(20) Since the abdominal external elastic portion 28F and the back external elastic portion 28R are constituted by the single ventral external sheet portion 26F and the back external sheet portion 26R, the ventral external elastic portion 28F and the back external elastic portion The number of parts of the part 28R can be reduced and the production efficiency can be improved.

[Eighth Embodiment]
As shown in FIG. 12, the diaper 91 of the eighth embodiment is obtained by turning the abdominal side internal elastic part 27F and the back side internal elastic part 27R of the diaper 90 of the seventh embodiment upside down and bent. The folds of the ventral sheet 27FA and the back sheet 27RA thus formed are on the waistline opening 10A side, and the end opposite to the fold is on the crotch 10C side. In FIG. 12, the right side is the skin side of the diaper wearer. Also by such a diaper 91, the effect similar to the diaper 90 of 7th Embodiment can be acquired.

[Ninth Embodiment]
As shown in FIG. 13, in the diaper 100 of the ninth embodiment, the waistline opening 10A includes two parts, an abdominal outer sheet part 26F and a back outer sheet part 26R, an abdominal inner sheet part 29F, and a back inner sheet part 29R. It has a heavy sheet structure. When causing the wearer to wear the diaper 100, the operator performs a work of raising the diaper 100 upward by hooking a finger to the open ends of the abdominal pocket 30F and the back pocket 30R. For this reason, a pulling force acts on the sheet in the vicinity of the waistline opening 10A, and there is a possibility that the part is broken and damaged (see A part in FIG. 13). Therefore, the diaper 100 has a double structure as the sheet structure of the waistline opening 10A so as to increase the strength. In FIG. 13, the right side is the skin side of the diaper wearer. In the diaper 100, the ventral outer sheet portion 26F and the ventral inner sheet portion 29F are bonded by the adhesive 25A so that the positions of each other are not shifted.

In the diaper 100 as described above, the following effects can be further obtained.
(21) In the periphery of the waistline opening 10A, the abdomen outer sheet portion 26F and the dorsal outer sheet portion 26R, and the abdomen inner sheet portion 29F and the dorsal inner sheet portion 29R form a double sheet structure to increase the strength. it can. Therefore, when the diaper 100 is put on, even if the diaper 100 is pulled up by hooking a finger on the ventral pocket 30F and the back pocket 30R, the pulling force causes damage such as opening a hole around the waistline opening 10A. This can be suppressed.

[Tenth embodiment]
In the diaper 10 of 1st Embodiment demonstrated above, the strip | belt-shaped area | region 34 is provided in the periphery of 10 A of trunk periphery opening parts (refer Fig.2 (a) and Fig.3 (a)). As shown in FIGS. 14 (a) and 14 (b), in the diaper 110 of the tenth embodiment, the front and rear ends of the adherend 16A are arranged at positions along the opening end of the waistline opening 10A. Thereby, the abdominal pocket 30F and the back pocket 30R can be made deep and large, and more excrement can be received. Such a diaper is applicable also to the diaper 40, 50, 60, 70, 80, 90, 91, 100 mentioned above.

In addition, the said embodiment can also be suitably changed and implemented as follows.
-The back side lower elastic member 15RD may all be cut | disconnected on the to-be-adhered part 16A. According to this, the pleat 16B is not formed, and the adhesion of the back side external elastic portion 28R to the skin can be enhanced. Further, the back-side lower elastic member 15RD may be arranged in an extended state. In this case, by forming a large number of pleats 16B, the back-side bonded portion 16A including the back-side end portion 18R of the absorber 18 can be made thick. Therefore, the gap portion 35 can be reliably formed. Further, the pleat 16B can serve as a guide groove to guide excrement such as urine toward the opening end of the back pocket 30R.

  If the gap 35 can be reliably formed, the distance C between the back end 18R and the back upper elastic member 15RU located at the lowest level is 20 which is the length L4 in the vertical direction of the back exterior body 12R. % Or less.

If the gap 35 can be reliably formed, the distance C between the back side end 18R and the back upper elastic member 15RU located at the lowest level is not less than three times the thickness T of the back side end. May be.
If the ventral upper region 12FU overlaps with the ventral end 18F in the front-rear direction of the absorber 18, the ventral end 18F is the lowest ventral upper elastic member 15FU closest to the ventral lower region 12FD. It does not have to overlap.

  The back-side upper region 12RU may overlap with the back-side end portion 18R as long as the back-side end portion 18R does not overlap with the back-side upper elastic member 15RU located at the lowest stage of the back-side external elastic portion 28R. For example, when the lower end portion of the seat where only the seats overlap is present below the back-side upper elastic member 15RU located at the lowest level, the back-side end portion 18R has the flange portion 39 that closes the opening end of the back-side pocket 30R. It may overlap with the lower end of the sheet to the extent that there is not.

  -The shape of pocket 30F, 30R will not be specifically limited if the opening end is provided in the crotch part 10C side. 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, and the opening ends may face the crotch 10C side. Thereby, it can suppress that the excrement which entered pockets 30F and 30R returns. Further, the width of the opening ends of the pockets 30F and 30R may be wider than the side on the waist opening 10A side. Thereby, excrement can be made easy to enter into pockets 30F and 30R.

  The ventral upper region 12FU and the ventral lower region 12FD may not be connected by the ventral external sheet portion 26F. Moreover, the back side upper area | region 12RU and the back side lower area | region 12RD do not need to be connected by the back side outside seat part 26R.

  The region where the abdominal upper elastic member 15FU and the back upper region 12RU located on the inner side with respect to the absorbent main body 16 and the ventral lower elastic member 15FD and the back lower elastic member 15RD located outside are disposed. These regions may be at the same position in the vertical direction or may overlap in the vertical direction.

-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.
-The disposable diaper 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.

  DESCRIPTION OF SYMBOLS 10 ... Diaper, 10A ... Trunk circumference opening, 10C ... Crotch lower part, 10F ... Front body, 10L ... Leg circumference opening, 10R ... Rear body, 10W ... Trunk circumference part, 11 ... Joint part, 12F ... Ventral exterior body , 12FD ... ventral lower region, 12FU ... ventral upper region, 12R ... backside exterior body, 12RD ... dorsal lower region, 12RU ... dorsal upper region, 15FD ... ventral lower elastic member, 15FU ... ventral upper elasticity 15 RD ... back lower elastic member, 15 RD 1 back lower elastic member, 15 RU back upper elastic member, 16 absorptive main body, 16 A ... adherend, 17 ... back sheet, 18 ... absorber, 18 A ... Peripheral part, 18F ... ventral end, 18R ... dorsal end, 19 ... top sheet, 21 ... solid gather, 21E ... elastic member, 21S ... side sheet, 22A ... first adhesive region, 22B ... second adhesive region , 22 3rd adhesion region, 23 ... Seal part, 25 ... Adhesive, 25A ... Adhesive, 26 ... External sheet, 26F ... Abdominal side external sheet part, 26R ... Back side external sheet part, 27F ... Abdominal side internal elastic part, 27FA ... ventral sheet, 27R ... dorsal internal elastic part, 27RA ... dorsal sheet, 28F ... ventral external elastic part, 28FA ... ventral sheet, 28R ... dorsal external elastic part, 28RA ... dorsal sheet, 29F ... Abdominal side internal sheet part, 29R ... back side internal sheet part, 30F ... ventral side pocket, 30R ... dorsal side pocket, 34 ... belt-like region, 35 ... gap part, 36 ... abdomen, 37 ... hollow part, 38 ... back part, 38a ... cracks, 39 ... buttocks.

Claims (5)

A ventral exterior covering the abdomen,
A dorsal exterior covering the back,
An absorptive main body comprising an absorbent body extending between the abdominal exterior part and the back exterior part, wherein the abdominal exterior part and the dorsal side are provided at both ends of the absorptive body in the front-rear direction. The absorbent main body provided with the adherend part that overlaps the exterior part,
The dorsal exterior part includes a dorsal upper region and a dorsal lower region located on the crotch side than the dorsal upper region,
The back-side upper region includes an internal elastic portion, and the internal elastic portion includes a plurality of upper elastic members extending in the waist direction and arranged in the vertical direction, and a sheet sandwiching the upper elastic member, and the upper elastic portion The member is located on the inner side which is the skin side of the absorbent main body, not located on the outer side of the absorbent main body,
The dorsal lower region includes an external elastic portion, and the external elastic portion includes a plurality of lower elastic members that extend in the waist direction and are arranged in the vertical direction, and a sheet that sandwiches the lower elastic member. The member is located outside the absorbent body, not located inside the absorbent body,
The dorsal upper region does not include the external elastic portion, the dorsal lower region does not include the internal elastic portion,
The inner elastic portion is non-adhered to the adherend portion, and is adhered to an outer sheet portion positioned outside the absorbent main body around the adherend portion, thereby opening an opening end. Comprises a pocket facing the crotch side on the adherend portion, and the external elastic portion is adhered to the adherend portion,
Among the plurality of lower elastic members, a lower elastic member that is not cut in a region overlapping with the absorber is included. The absorptive article according to claim 1. The back end part of the absorber is located in the crotch side rather than the opening end of the pocket. The absorptive article according to claim 1 or 2 in which the lower elastic member located along the lower end part of said back side upper field among said a plurality of said lower elastic members is not cut. The absorbent article according to any one of claims 1 to 3, wherein all of the lower elastic member is not cut. In the back upper region, the lower end portion of the seat is composed only of a sheet sandwiching the upper elastic member on the crotch side than the upper elastic member on the most crotch side,
The absorbent article according to any one of claims 1 to 4, wherein the lower end portion of the seat overlaps with a back end portion of the absorbent body.

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