JP2023034300A - disposable diaper - Google Patents

Abstract

To provide a disposable diaper capable of stably holding a front end and/or a rear end of a urine pad to be used supplementarily, in pockets provided in a skin surface side of the diaper.SOLUTION: A disposable diaper comprising an anterior trunk part, a posterior trunk part and a crotch part located therebetween and formed into an underpants shape, comprises an absorbent body 7, and an outer member 2 provided at an outer surface side of the absorbent body 7 and at least disposed at the anterior trunk part and the posterior trunk part. A skin surface side of the anterior trunk part and a skin surface side of the posterior trunk part respectively include pockets 19 and 20 opened to a center side in the longitudinal direction, The pockets 19 and 20 include, in order from opening edges 19E and 20E sides, first elastic members 21A and 22A, second elastic members 21B and 22B and third elastic members 21C and 22c, where a separation interval between the second elastic members 21B and 22B and the third elastic members 21C and 22C is wider than a separation interval between the first elastic members 21A and 22A and the second elastic members 21B and 22B.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a disposable diaper, and more particularly to a disposable diaper that can be suitably used in combination with an inner pad that is an auxiliary urine pad.

Conventionally, a method is known in which an auxiliary urine pad is placed on the skin side of a disposable diaper. According to such a method of use, the urine pad first receives the urine excreted by the wearer, so that only the urine pad is replaced as appropriate, and the disposable diaper worn on the outer side of the urine pad continues to be used. Therefore, it is possible to reduce the total usage cost of the absorbent article. In addition, by replacing only the urine pad, it becomes possible for a caregiver or the like to perform the replacement work more easily than when replacing the disposable diaper attached to the outside of the urine pad.

As a disposable diaper suitable for use with an auxiliary urine pad, for example, Patent Document 1 discloses an absorbent main body having a top sheet, a back sheet, and an absorbent body disposed between these sheets; The main body is fixed at least in part and has an exterior member for holding the absorbent main body in contact with the wearer. Stretchable belt-shaped sheets are provided in both longitudinal end regions of the absorbent main body in the waist circumference direction of the diaper. The strip-shaped sheet is adhesively fixed to an exterior member at least at the portions located in the outer regions of both side edges of the absorbent body. Patent Document 2 discloses an interior body having a liquid-permeable topsheet, a liquid-impermeable backside sheet, and an absorbent body interposed therebetween, and an interior body fixed to the outer surface of the interior body and having an absorbent body interposed therebetween. Disclosed is a disposable diaper provided with an outer body extending forward and rearward from a front body to a back body, and a pocket opening toward the center in the front-rear direction on each of the inner surfaces of the front body and the back body. .

Japanese Patent Application Laid-Open No. 2007-29609 Japanese Unexamined Patent Application Publication No. 2011-206218

As described above, a disposable diaper provided with a pocket or the like on the skin side of the diaper is conventionally known as a disposable diaper suitable for use with an auxiliary urine pad. When inserting the pad into the pocket on the skin side of the diaper, it is desirable to be able to stably hold the front and rear ends of the auxiliary urine pad in the pocket. The present invention has been made in view of the above circumstances, and its object is to stabilize the front end and/or rear end of a supplementary urine pad in a pocket provided on the skin side of a disposable diaper. To provide a disposable diaper which can be held by hand.

The disposable diaper of the present invention, which can solve the above-mentioned problems, has a front body portion, a rear body portion, and a crotch portion positioned therebetween, and is formed in a pants shape. The crotch portion is provided with an absorbent main body having a top sheet, a back sheet, and an absorbent core disposed therebetween, and an exterior member is provided on the outer surface side of the absorbent main body, and the exterior member is The front and rear trunk portions of the exterior member are arranged on at least the front trunk portion and the rear trunk portion, and the front and rear trunk portions of the exterior member are joined to each other at both sides in the width direction. Alternatively, on the skin surface side of the rear trunk portion, a pocket that opens toward the center of the disposable diaper in the front-rear direction is provided, and the pocket includes a first elastic member and a second elastic member along the opening edge of the pocket. A plurality of pocket elastic members including a member and a third elastic member are arranged in the front-rear direction of the pocket, and the first elastic member, the second elastic member, and the third elastic member are arranged in the pocket. The separation distance (second separation distance) between the second elastic member and the third elastic member is the same as the separation distance (first separation distance) between the first elastic member and the second elastic member. It is characterized by a wider area than

As described above, the disposable diaper of the present invention is provided with pockets on the skin surface side of the front body portion and/or the skin surface side of the rear body portion, and the pockets are provided with a plurality of pocket elastic members. Therefore, when the inner pad, which is a supplementary urine pad, is inserted into the pocket, the front and rear ends of the inner pad are firmly held by the first elastic member and the second elastic member near the opening edge of the pocket. At the same time, the third elastic member provided away from the second elastic member so that the second spacing is wider than the first spacing prevents the front and rear end portions of the inner pad from being distorted in the pocket. The front and rear ends of the pad can be stably held in the pocket. Therefore, it becomes easy to appropriately install the inner pad on the skin side of the disposable diaper. The front and rear ends of the inner pad mean the front and/or rear ends of the inner pad.

The opening edge of the pocket is preferably formed at a position overlapping the absorbent core. By providing the pocket in this way, it becomes easier to insert the front and rear ends of the inner pad into the pocket. Further, when the front and rear ends of the inner pad are inserted into the pocket, the front and rear ends of the inner pad are supported by the absorbent core, so that the front and rear ends of the inner pad are less likely to slip out of the pocket.

Both ends of the pocket in the width direction are joined to the exterior member in the vicinity of the opening edge where the pocket elastic member is provided, and when the elastic member for the pocket is contracted, the absorbent core is attached to the vicinity of the opening edge of the pocket. preferably extends outward in the width direction from both ends in the width direction of the . In this case, both ends of the vicinity of the opening edge of the pocket are positioned further outward in the width direction than both ends of the absorbent core in the width direction when the pocket elastic member is stretched, while the pocket elastic member is contracted. In this state, the portions near the opening edges of the pocket contract in the width direction, so that both ends of the portions near the opening edges of the pocket are positioned inward in the width direction from both ends in the width direction of the absorbent core. Therefore, when the front and rear ends of the inner pad are inserted into the pocket, the front and rear ends of the inner pad are preferably pressed by the pocket elastic member, and the front and rear ends of the inner pad are less likely to slip out of the pocket.

In the above case, in the contracted state of the pocket elastic member, the length between both ends in the width direction of the portion near the opening edge of the pocket overlaps with the portion near the opening edge of the pocket, and the length of the width direction of the portion near the opening edge It is preferably 50% or more and 95% or less of the width of the absorbent core extending outward in the width direction from both ends. This facilitates insertion of the front and rear end portions of the inner pad into the pocket, and prevents the front and rear end portions of the inner pad from accidentally slipping out of the pocket.

It is preferable that at least the first elastic member and the second elastic member of the pocket elastic member are provided in a region of 1/4 or less of the opening edge side in the front-rear direction of the pocket. As a result, gathers are preferably formed along the opening edge of the pocket, and the front and rear end portions of the inner pad can be easily held firmly by the first elastic member and the second elastic member.

It is preferable that the disposable diaper is provided with a front pocket as the pocket on the skin surface side of the front trunk portion and a rear pocket as the pocket on the skin surface side of the rear trunk portion. Since the disposable diaper is provided with both the front pocket and the rear pocket, the front end of the inner pad can be inserted into the front pocket and the rear end of the inner pad can be inserted into the rear pocket. It can be stably installed on the skin surface side of the disposable diaper.

The length of the depth of the front pocket and the length of the depth of the back pocket may be the same or different. For example, when a woman uses a disposable diaper for incontinence, it is preferable that the depth of the back pocket is longer than the depth of the front pocket, considering the position of the urethral opening. On the other hand, when a man uses a disposable diaper for incontinence, the depth of the front pocket is preferably longer than the depth of the back pocket, considering the position of the urethral opening.

In the disposable diaper, a front pocket is provided as the pocket on the skin side of the front body portion, and the thickness of the front end portion of the absorbent core is greater than the thickness of the central ⅓ portion of the absorbent core in the front-rear direction. It is preferably thin, and/or a rear pocket is provided as the pocket on the skin surface side of the rear trunk, and the thickness of the rear end of the absorbent core is 1 It is preferably thinner than the thickness of the /3 portion. By forming the absorbent core in this way, it becomes easier to insert the front and rear ends of the inner pad into the pocket.

The pocket is preferably formed by providing a cover sheet on the skin surface side of the front trunk portion and/or the skin surface side of the rear trunk portion of the exterior member. Specifically, a cover sheet is provided on the skin surface side of the front body portion and/or the skin surface side of the rear body portion of the exterior member, and the cover sheet is provided on the center side edge of the disposable diaper on the center side in the front-rear direction. and an outer side edge on the outer side in the front-rear direction of the disposable diaper, and the cover sheet has a joint region joined to the outer member and/or the absorbent main body, and either the outer member or the absorbent main body. The non-bonded area extends outward in the front-rear direction of the disposable diaper from the center side edge of the cover sheet in the front-rear direction, thereby opening the center side edge of the cover sheet. Preferably, the pocket is formed as an edge, and the pocket elastic member is provided on the cover sheet. By providing the cover sheet in this manner, pockets can be easily formed in the disposable diaper. Also, the amount of sheet material used to form the pocket can be reduced.

The cover sheet is folded outward at least once at a crease extending in the width direction to form a folded portion along the opening edge of the pocket inside the pocket, and the elastic member for the pocket comprises the folded portion. WHEREIN: It is preferable to arrange|position between the cover sheets folded|folded at the said outer surface side. By providing the pocket elastic member in the folded portion in this way, the pocket elastic member can be stably installed in the pocket. In addition, since the cover sheet has the fold-backed portion on the outer surface side, the fold-out portion does not come into direct contact with the wearer's skin. When inserting the inner pad into the pocket, the front and rear ends of the inner pad can be easily inserted into the pocket without being caught by the pocket elastic member.

It is preferable that the length of the folded portion in the front-rear direction is 10% or more and 50% or less of the depth of the pocket. Forming the folded portion in this manner facilitates the manufacturing process of providing the pocket elastic member in the folded portion, and suppresses an excessive increase in the amount of the cover sheet used to form the folded portion. can be done.

In the disposable diaper, a front pocket is provided as the pocket on the skin side of the front body, and a plurality of front body elastic members extending in the width direction are arranged in the front-rear direction on the front body of the exterior member. The front end of the front pocket is located forward of the front end of the absorbent body, and at least a portion of the front waist elastic member is disposed between the front end of the front pocket and the front end of the absorbent body. and/or a rear pocket is provided as the pocket on the skin surface side of the rear trunk, and a rear trunk elastic member extending in the width direction is provided in the rear trunk of the exterior member. A plurality of members are provided side by side in the front-rear direction, and the rear end of the back pocket is located on the rear side of the rear end of the absorbent main body, and the rear end of the rear pocket and the rear side of the absorbent main body are arranged. Preferably, at least part of the rear torso elastic member is arranged between the ends. If the exterior member is provided with the front and/or rear body elastic members in this way, when the front and rear ends of the inner pad are inserted into the pocket and worn, the front and rear ends of the inner pad are are pressed against the wearer's skin by the front and/or rear trunk elastic members, and the front and rear end portions of the inner pad can be stably held in the pocket.

The present invention also provides an absorbent article combination comprising the disposable diaper of the present invention as described above and an inner pad disposed over the topsheet of the disposable diaper. According to the combination of absorbent articles of the present invention, the inner pad can be stably arranged on the skin side of the disposable diaper by inserting the front and rear ends of the inner pad into the pocket of the disposable diaper.

In the above combination of absorbent articles, the width of the absorbent core of the inner pad is preferably wider than the width of the absorbent core of the disposable diaper and narrower than the opening width of the pocket. As a result, the inner pad can be easily inserted into the pocket, and can be stably and easily installed on the skin side of the disposable diaper.

In the disposable diaper of the present invention, when the auxiliary inner pad is inserted into the pocket provided on the skin surface side of the disposable diaper, the front and rear ends of the inner pad contact the first elastic member near the opening edge of the pocket. While being firmly held by the second elastic member, the third elastic member provided apart from the second elastic member prevents the front and rear ends of the inner pad from being distorted in the pocket. can be stably held in the pocket. Therefore, it becomes easy to appropriately install the inner pad on the skin side of the disposable diaper.

An example of the disposable diaper of this invention is represented, and the perspective view of a disposable diaper is represented. FIG. 10 is an example of a plan view of the side seal portion of the disposable diaper shown in FIG. 1 , viewed from the skin surface side, in which the front body portion and the rear body portion are unjoined and unfolded in a plane. 3 represents a cross-sectional view of the disposable diaper shown in FIG. 2, taken along line III-III. 3 represents a cross-sectional view of the disposable diaper shown in FIG. 2 taken along line IV-IV. FIG. 3 is a partial plan view of the disposable diaper shown in FIG. 2 from the front body portion to the crotch portion; FIG. 3 is a partial plan view of the disposable diaper shown in FIG. 2 from the rear body portion to the crotch portion; In the plan view of the disposable diaper shown in FIG. 2, an example of formation of the joining region of the cover sheet to the exterior member is shown. 3 shows an example in which a supplementary urine pad (inner pad) is arranged on the skin surface side of the disposable diaper shown in FIG.

An embodiment of the disposable diaper of the present invention will be described with reference to the drawings. The invention is not limited to the embodiments shown in the drawings. 1 to 6 show an example of the disposable diaper of the present invention. FIG. 1 shows a perspective view of a disposable diaper, and FIG. 2 shows the side seal portion of the disposable diaper shown in FIG. Represents a plan view seen from the surface side, FIG. 3 represents a III-III cross-sectional view of the disposable diaper shown in FIG. 2, FIG. 4 represents a IV-IV cross-sectional view of the disposable diaper shown in FIG. 5 is a partial plan view from the front body portion to the crotch portion of the disposable diaper shown in FIG. 2, and FIG. 6 is a partial plan view from the rear body portion to the crotch portion of the disposable diaper shown in FIG. represents 2, 7 and 8 are plan views of the side seal portion of the disposable diaper, viewed from the skin side, showing a state in which the front body portion and the rear body portion are unjoined and unfolded in a plane. In the figure, the arrow x indicates the width direction of the disposable diaper, the arrow y indicates the front-rear direction of the disposable diaper, and the direction perpendicular to the plane defined by the arrows x and y indicates the thickness direction z of the disposable diaper. .

A disposable diaper 1 according to an embodiment of the present invention has a front body portion P, a rear body portion Q, and a crotch portion R positioned therebetween, and has a waist opening 3 and a pair of leg openings 4. , is formed in a pants shape as shown in FIG. Specifically, as shown in FIG. 2, the disposable diaper 1 has a front-rear direction y and a width direction x. A waist opening 3 and a pair of leg openings 4 as shown in FIG. It is formed in a pants shape with

In the disposable diaper 1, the front-rear direction y corresponds to the direction extending in the front-rear direction between the wearer's crotch when the diaper is worn. The front-rear direction y corresponds to the up-down direction of the disposable diaper 1, for example, as shown in FIG. The width direction x corresponds to the left-right direction perpendicular to the front-rear direction y. The disposable diaper 1 also has a skin side and an outer side with respect to the thickness direction z shown in FIGS. The skin side means the skin side of the wearer when the diaper is worn, and the outer side means the side opposite to the skin side. The front-rear direction y, the width direction x, and the thickness direction z of the disposable diaper 1 are defined similarly to the front-rear direction, the width direction, and the thickness direction of each member constituting the disposable diaper 1 . Further, the skin side and the outer side of the disposable diaper 1 are defined as the same side as the skin side and the outer side of each member constituting the disposable diaper 1 .

In the disposable diaper 1, the waist opening 3 is an opening through which the wearer's torso passes, and the leg openings 4 are openings through which the wearer's legs pass. The front trunk portion P corresponds to the portion that is brought into contact with the abdomen of the wearer when the diaper is put on, and the rear trunk portion Q is the portion that is brought into contact with the back of the wearer when the diaper is worn. In the underpants-shaped disposable diaper 1 , the front body portion P and the rear body portion Q correspond to portions positioned between the waist opening 3 and the leg openings 4 . The crotch part R is positioned between the front side body part P and the rear side side body part Q, and corresponds to the part that is applied to the wearer's crotch. The crotch portion R is positioned between a pair of leg openings 4 and is not joined to each other on both sides in the width direction x.

The crotch region R of the disposable diaper 1 is provided with an absorbent main body 7 having an absorbent core 10 arranged between a top sheet 8 and a back sheet 9 (see FIGS. 2 to 4). The absorbent main body 7 should be present at least in the crotch region R, and preferably extends over at least a part of the front body region P and/or the rear body region Q. More preferably, the absorbent main body 7 extends from the crotch region R to at least a portion of the front trunk portion P and at least a portion of the rear trunk portion Q. In the disposable diaper 1 shown in the drawings, an absorbent main body 7 having an absorbent core 10 arranged between a top sheet 8 and a back sheet 9 is provided on the skin surface side of an exterior member 2 formed in the shape of pants. there is The top sheet 8 is arranged on the skin surface side of the absorbent core 10 , and the back sheet 9 is arranged on the outer surface side of the absorbent core 10 .

The top sheet 8 is preferably liquid-permeable, and examples thereof include nonwoven fabrics formed from hydrophilic fibers such as cellulose, rayon, and cotton, polyolefins (e.g., polypropylene, polyethylene), polyesters (e.g., PET), and polyamides (e.g., PET). For example, it is possible to use a nonwoven fabric formed from hydrophobic fibers such as nylon, the surface of which is hydrophilized with a surfactant. As the top sheet 8, a woven fabric, a knitted fabric, a perforated plastic film, or the like may be used.

The back sheet 9 is preferably liquid-impermeable. For example, a nonwoven fabric made of hydrophobic fibers such as polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), A plastic film or the like can be used. A laminate of a nonwoven fabric and a plastic film may also be used.

When the top sheet 8 and the back sheet 9 are made of nonwoven fabric, the nonwoven fabric is preferably spunbonded nonwoven fabric, air-through nonwoven fabric, point-bonded nonwoven fabric, meltblown nonwoven fabric, air-laid nonwoven fabric, SMS nonwoven fabric, or the like.

The absorbent core 10 is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorbent core 10, for example, a molded body obtained by molding an absorbent material into a predetermined shape can be used. The absorbent core 10 may be covered with a sheet member such as a paper sheet (for example, tissue paper or thin paper) or liquid-permeable nonwoven fabric. Absorbent materials contained in the absorbent core 10 include, for example, hydrophilic fibers such as cellulose fibers (for example, pulverized pulp fibers), polyacrylic acid-based, polyaspartic acid-based, cellulose-based, starch/acrylonitrile-based, and the like. and the like. The absorbent material may also include heat-fusible fibers such as polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and polyamide fibers such as nylon. These heat-fusible fibers may be hydrophilized with a surfactant or the like in order to increase affinity with body fluids such as urine.

The absorbent material preferably contains hydrophilic fibers in order to increase the rate of absorption of urine and the like. Moreover, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water absorbent resin. Therefore, the absorbent core 10 preferably contains hydrophilic fibers (especially pulp fibers) and water absorbent resin. In this case, it is preferable to use, for example, an aggregate of hydrophilic fibers mixed with or sprinkled with a water absorbent resin.

The absorbent core 10 may be a sheet absorbent body. Examples of sheet-like absorbent bodies include those formed so as to contain a water-absorbing resin between non-woven fabrics and not contain pulp fibers. Since the sheet-like absorbent body thus formed has the water-absorbing resin between the nonwoven fabrics, a high absorption capacity can be realized. Moreover, since the sheet-like absorbent body does not have pulp fibers between the nonwoven fabrics, it can be formed thin without being bulky.

The absorbent core 10 should be present at least in the crotch region R, and preferably extends over at least part of the front body part P and/or at least part of the rear body part Q. The shape (planar shape) of the absorbent core 10 is not particularly limited. Examples of the shape of the absorbent core 10 include a substantially rectangular shape, an hourglass shape, and a battledore shape. In the drawings, the absorbent core 10 is formed in a substantially rectangular shape.

The absorbent main body 7 is preferably provided with rising flaps 11 on both sides in the width direction x on the skin surface side. The rising flap 11 can prevent side leakage of excrement such as urine. The riser flap 11 is preferably liquid impermeable. The rising flap 11 is preferably provided with a rising elastic member 12 at the upper end (the end on the wearer's side) of the rising state, and the shrinking force of the rising elastic member 12 promotes the rising of the rising flap 11. .

An exterior member 2 is provided on the outer surface side of the absorbent main body 7, and the exterior member 2 is arranged at least on the front trunk portion P and the rear trunk portion Q. As shown in FIG. The exterior member 2 has the front side body portion P and the rear side body portion Q joined to each other by the side seal portions 13 on both sides in the width direction x, and the exterior member 2 covers the wearer's waist when the disposable diaper 1 is worn. . The side seal portion 13 is formed, for example, by joining both sides of the front trunk portion P and the rear trunk portion Q in the width direction x by welding.

As one embodiment, the exterior member 2 may be arranged only on the front trunk portion P and the rear trunk portion Q. In this case, the absorbent main body 7 is provided so as to connect the front trunk portion P and the rear trunk portion Q of the exterior member 2, and the absorbent main body 7 extends from the crotch portion R to at least a part of the front trunk portion P and the rear side. It extends to at least a portion of the body portion Q, and a portion of the absorbent main body 7 is exposed to the outer surface side of the disposable diaper 1 at the crotch portion R. As another embodiment, the exterior member 2 may be arranged on the front trunk portion P, the crotch portion R, and the rear trunk portion Q. The exterior member 2 may be formed, for example, by continuously forming a front trunk portion P, a rear trunk portion Q, and a crotch portion R positioned therebetween. In this case, the exterior member 2 can be formed in a pants shape by joining the front body portion P and the rear body portion Q with the side seal portions 13, and the absorbent main body 7 is formed in a pants shape. It is provided at least on the skin surface side of the crotch portion R of the exterior member 2 . Alternatively, the exterior member 2 is separated in the front-rear direction y at the crotch portion R, and is composed of a portion extending from the front trunk portion P to the crotch portion R and a portion extending from the rear trunk portion Q to the crotch portion R. and the absorbent body 7 may be provided so as to connect both parts. In the disposable diaper 1 shown in the drawings, the exterior member 2 is formed in a pants shape as shown in FIG.

The exterior member 2 is preferably provided so as to extend outward in the width direction x from the absorbent main body 7 in the front trunk portion P and the rear trunk portion Q. As shown in FIG. The exterior member 2 is preferably provided so as to extend outward in the width direction x from the absorbent main body 7 also in the crotch region R. The exterior member 2 is also preferably provided so as to extend outward in the front-rear direction y, that is, forward and rearward from the absorbent main body 7 .

The exterior member 2 preferably has an inner sheet 5 and an outer sheet 6 arranged on the outer surface side of the inner sheet 5 . The absorbent main body 7 is preferably provided on the skin surface side of the inner sheet 5 . The inner sheet 5 and the outer sheet 6 may be liquid-permeable or liquid-impermeable, and sheet materials that can be used for the top sheet 8 and the back sheet 9 can be used. In the drawings, the inner sheet 5 and the outer sheet 6 are each formed to have the shape of pants. It is sufficient if it is formed in For example, one of the inner sheet 5 and the outer sheet 6 may be provided separately in the front-rear direction y at the crotch portion R.

Leg elastic members 14 are preferably provided on the exterior member 2 along the edges of the leg openings 4 . The leg elastic members 14 include, for example, a front leg elastic member 14A that crosses the crotch region R and is provided along the front edge of the leg opening 4, and a front leg elastic member 14A that crosses the crotch region R and is provided behind the leg opening 4. and a rear leg elastic member 14B provided along the side edge. The front leg elastic member 14A and the rear leg elastic member 14B provide an elastic member along substantially the entire periphery of the edge of the leg opening 4, forming leg gathers along the leg circumference of the wearer, and forming a crotch portion. Leakage of urine or the like from is prevented. In the drawing, the front leg elastic members 14A and the rear leg elastic members 14B are spaced apart from each other, but the front leg elastic members 14A and the rear leg elastic members 14B are partially in contact with each other. may or may not intersect. When the exterior member 2 is composed of the inner sheet 5 and the outer sheet 6, the leg elastic members 14 are preferably arranged between the inner sheet 5 and the outer sheet 6, and the inner sheet 5 and/or the outer sheet. 6 is preferably glued.

Preferably, a plurality of trunk elastic members 15 extending in the width direction x are provided on the front trunk portion P and the rear trunk portion Q of the exterior member 2 . A torso elastic member 15 is provided between the waist opening 3 and the leg openings 4 . The waist elastic member 15 enhances fit around the wearer's waist. Of the torso elastic members 15, elastic members provided at narrow intervals in the front-rear direction y along the edge of the waist opening 3 may be provided as waist elastic members 16, so that the waist elastic members 16 are arranged along the circumference of the wearer's waist. A waist gather is formed to prevent leakage of excrement such as urine from the back side or abdomen side. In the drawing, the waist elastic members 16 are provided at narrower intervals in the front-rear direction y than the trunk elastic members 15 .

The trunk elastic member 15 is preferably provided between the inner sheet 5 and the outer sheet 6 . In this case, the waist elastic member 15 is preferably adhered to the inner sheet 5 and/or the outer sheet 6 . The waist elastic member 16 may be provided between the inner sheet 5 and the outer sheet 6, and the outer sheet 6 is folded back toward the inner sheet 5 at the edge of the waist opening 3 of the exterior member 2 to form the folded outer side. A waist elastic member 16 may be provided between the sheets 6 (see FIG. 4). In this case, the waist elastic member 16 is preferably adhered to the outer sheet 6 .

As each elastic member provided in the disposable diaper 1, an elastic stretchable material such as a polyurethane thread, a polyurethane film, a natural rubber, or the like, which is used in ordinary disposable diapers, can be used. Each elastic member is preferably fixed to the diaper in a stretched state, and preferably fixed with an adhesive such as a hot-melt adhesive. For example, a polyurethane thread having a fineness of 40 to 1,240 dtex is stretched at a magnification of 1.1 to 5.0 times, arranged, and fixed. As the adhesive, it is preferable to use a rubber-based hot-melt adhesive. Note that the magnification is 1.0 in the non-expanded state.

As shown in FIGS. 2 and 4, the disposable diaper 1 has pockets 19 and 20 that open toward the center of the disposable diaper 1 in the front-rear direction y on the skin surface sides of the front body portion P and the rear body portion Q. be provided. Since the disposable diaper 1 is provided with the pockets 19 and 20 as described above, a supplementary urine pad (hereinafter referred to as an "inner pad") is stably arranged on the skin surface side of the disposable diaper 1. be able to. FIG. 8 shows an example in which the inner pad 31 is arranged on the skin surface side of the disposable diaper 1 shown in FIG. The front and rear end portions of the inner pad 31 are pressed by the pocket elastic members arranged along the inner pad 31, so that the inner pad 31 can be stably arranged on the skin side of the disposable diaper 1. - 特許庁The pocket 19 provided on the skin side of the front body P is called a "front pocket" or "front pocket 19", and the pocket 20 provided on the skin side of the rear body Q is a "rear pocket" or It is called "rear side pocket 20". Moreover, in this specification, the “pockets 19 and 20 ” mean the front pocket 19 and/or the rear pocket 20 . The disposable diaper 1 may be provided with either one of the front pocket 19 and the rear pocket 20, or both, but preferably both the front pocket 19 and the rear pocket 20 are provided.

The pockets 19 and 20 can be formed by providing cover sheets 17 and 18 on the skin surface side of the front trunk portion P and/or the skin surface side of the rear trunk portion Q of the exterior member 2 . Specifically, the front pocket 19 can be formed by providing the front cover sheet 17 on the skin surface side of the front body portion P of the exterior member 2 , and the rear pocket 20 is formed on the rear body of the exterior member 2 . It can be formed by providing a rear cover sheet 18 on the skin surface side of the portion Q. In this specification, the “cover sheets 17 and 18” mean the front cover sheet 17 and/or the rear cover sheet 18. As shown in FIG. The method of forming the pockets 19,20 from the coversheets 17,18 will now be described in detail with reference to FIG.

FIG. 7 shows an example of formation of joint regions in which the cover sheets 17 and 18 are joined to the exterior member 2 in the disposable diaper 1 shown in FIG. In FIG. 7, the joint regions of the cover sheets 17, 18 to the exterior member 2 are indicated by cross hatching, and the outer edges of the pockets 19, 20 are indicated by two-dot chain lines. In order to facilitate understanding, leg elastic members, body elastic members, waist elastic members, and pocket elastic members, which will be described later, are omitted from illustration.

The cover sheets 17 and 18 have central side edges 17CE and 18CE on the central side in the front-rear direction y of the disposable diaper 1 and outer side edges 17OE and 18OE on the outer side in the front-rear direction y of the disposable diaper 1 . In the front cover sheet 17 , the central side edge 17CE means the rear side edge of the front side cover sheet 17 , and the outer side edge 17OE means the front side edge of the front side cover sheet 17 . In the rear cover sheet 18 , the central side edge 18CE means the front side edge of the rear side cover sheet 18 and the outer side edge 18OE means the rear side edge of the rear side cover sheet 18 . In the following description, the reference sign "17CE" will be used for both the "central side edge" and the "rear side edge" of the front cover sheet 17, and the reference sign "18CE" will be used for the rear cover sheet 18 " It is used for both the "central side edge" and the "front side edge".

The cover sheets 17, 18 have joined regions 17A, 18A joined to the exterior member 2 and non-joined regions 17B, 18B joined to neither the exterior member 2 nor the absorbent main body 7. The non-joined regions 17B, 18B 18B extends from central side edges 17CE, 18CE of cover sheets 17, 18 outward in the front-rear direction y of disposable diaper 1, so that central side edges 17CE, 18CE of cover sheets 17, 18 are formed into opening edges 19E, 20E. are formed. Specifically, the front cover sheet 17 has a bonded region 17A bonded to the exterior member 2 and a non-bonded region 17B bonded to neither the exterior member 2 nor the absorbent main body 7. The non-bonded region 17B is By extending forward from the rear edge 17CE of the front cover sheet 17, the front pocket 19 is formed with the rear edge 17CE of the front cover sheet 17 as the opening edge 19E. The back cover sheet 18 has a bonded area 18A bonded to the exterior member 2 and a non-bonded area 18B bonded to neither the exterior member 2 nor the absorbent main body 7. The non-bonded area 18B is the back cover sheet. By extending rearward from the front edge 18CE of the rear cover sheet 18, the rear pocket 20 is formed with the front edge 18CE of the rear cover sheet 18 as the opening edge 20E. By providing the cover sheets 17 and 18 in this manner, the pockets 19 and 20 can be easily formed. Also, the amount of sheet material used to form the pockets 19 and 20 can be reduced. Although not shown in the drawings, the bonding areas 17A, 18A of the cover sheets 17, 18 are formed to bond with at least a portion of the absorbent body 7, either together with the outer member 2 or instead of the outer member 2. may be

In the joining regions 17A, 18A of the cover sheets 17, 18, the means for joining the cover sheets 17, 18 to the exterior member 2 and/or the absorbent body 7 is not particularly limited, and welding (for example, heat sealing or ultrasonic welding) may be used. It is possible to employ a known joining means, such as a glue or an adhesive. Conveniently, the coversheets 17, 18 are joined to at least part of the outer member 2 and/or the absorbent body 7 by means of an adhesive.

The front pocket 19 is formed by extending the non-bonded region 17B of the front cover sheet 17 forward from the rear edge 17CE of the front cover sheet 17 with a predetermined width or more (for example, a width of 50 mm or more or 80 mm or more). be done. At the opening of the front pocket 19, there are joint regions 17A on both sides in the width direction x of the non-joint region 17B of the front cover sheet 17, and the rearmost portion of the non-joint region 17B positioned between the joint regions 17A on both sides is located. A part becomes an opening of the front side pocket 19 . The non-bonded region 17B forming the front pocket 19 may be formed with a constant width from the opening edge 19E of the front pocket 19 toward the depth direction, that is, toward the front from the rear edge 17CE of the front cover sheet 17. , may be formed to vary in width.

In the rear pocket 20, the non-bonded area 18B of the rear cover sheet 18 extends rearward from the front edge 18CE of the rear cover sheet 18 by a predetermined width or more (for example, a width of 50 mm or more or 80 mm or more). Formed by At the opening of the rear pocket 20, there are joined regions 18A on both sides of the non-joined region 18B of the rear cover sheet 18 in the width direction x, and the most front side of the non-joined region 18B located between the joined regions 18A on both sides. is the opening of the rear pocket 20 . The non-bonded region 18B forming the rear pocket 20 is formed with a constant width from the opening edge 20E of the rear pocket 20 toward the depth direction, that is, from the front side edge 18CE of the rear cover sheet 18 toward the rear. It may also be formed so that the width varies.

Although not shown in the drawings, the pockets 19 and 20 are formed by folding back the sheet members constituting the exterior member 2 to the skin surface side, and using the folded portions as the cover sheets 17 and 18 described above. , 20 can also be formed. For example, the outer sheet 6 constituting the exterior member 2 is folded back toward the skin surface at the edge of the waist opening 3 of the exterior member 2, and a part of the folded portion is joined to the inner sheet 5 and/or the absorbent body 7. By doing so, the above-described joined regions 17A and 18A are formed, and by not joining the other portion to neither the inner sheet 5 nor the absorbent main body 7, the above-described non-joined regions 17B and 18B can be formed. Alternatively, the inner sheet 5 constituting the exterior member 2 is folded back to the skin surface side, and a part of the folded portion is joined to the opposing inner sheet 5 and/or the absorbent body 7 to form the joint regions 17A and 18A. and the other portion is not joined to either the inner sheet 5 or the absorbent main body 7 facing each other, thereby forming the non-joined regions 17B and 18B. The case where the pockets 19 and 20 are formed by the cover sheets 17 and 18 will be described below. applies.

The opening edges 19E, 20E of the pockets 19, 20 are preferably formed at positions overlapping the absorbent main body 7. As shown in FIG. Therefore, the non-bonded region 17B of the front cover sheet 17 is preferably formed so as to overlap the absorbent main body 7, and the non-bonded region 18B of the rear cover sheet 18 is formed so as to overlap the absorbent main body 7. preferably. By providing the pockets 19 and 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19 and 20 . More preferably, the front pocket 19 is provided so as to extend forward from the front end of the absorbent main body 7 from a position overlapping the absorbent main body 7 . More preferably, the rear pocket 20 is provided so as to extend rearward from the rear end of the absorbent main body 7 from a position overlapping the absorbent main body 7 .

The opening edges 19E and 20E of the pockets 19 and 20 are preferably formed at positions overlapping the absorbent core 10 . By providing the pockets 19 and 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19 and 20 . Also, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 are supported by the absorbent core 10, so that the front and rear ends of the inner pad 31 are pushed out of the pockets 19 and 20. It becomes difficult to come off carelessly. More preferably, the front pocket 19 is provided so as to extend forward from the front end of the absorbent main body 7 from a position overlapping the absorbent core 10 . More preferably, the rear pocket 20 is provided so as to extend rearward from the rear end of the absorbent main body 7 from the position overlapping the absorbent core 10 .

The positions of the opening edges 19E and 20E of the pockets 19 and 20 are expanded by releasing the joints at the side seal portions 13 of the front side body portion P and the rear side body portion Q of the exterior member 2 so that the disposable diaper 1 is completely spread. stipulated in the For example, after the disposable diaper 1 is unfolded in this way and the elastic members provided in the disposable diaper 1 are finely cut so that the elastic members do not exert their contractile force, the disposable diaper 1 is completely unfolded. Define each position. Each drawing shows a plan view, a cross-sectional view, and the like of a state in which the disposable diaper 1 is completely unfolded. Also, other various positions and lengths in this specification are defined in the same manner unless otherwise specified.

As shown in FIGS. 2 and 4 to 6, the pockets 19 and 20 are provided with a plurality of pocket elastic members 21 and 22 aligned in the front-rear direction y along the opening edges 19E and 20E. . Specifically, the front pocket 19 is provided with a plurality of pocket elastic members 21 aligned in the front-rear direction y along the opening edge 19E. In the rear pocket 20, a plurality of pocket elastic members 22 are arranged in the front-rear direction y along the opening edge 20E. The plurality of pocket elastic members 21 and 22 may be provided in either one of the front pocket 19 and the rear pocket 20, or both. Also, one of the front pocket 19 and the rear pocket 20 may not be provided with the pocket elastic members 21 and 22 . Preferably, both the front pocket 19 and the rear pocket 20 are provided with a plurality of pocket elastic members 21 and 22 . In the present specification, the “pocket elastic members 21 and 22 ” mean the pocket elastic member 21 and/or the pocket elastic member 22 .

When the front pocket 19 is provided with a plurality of pocket elastic members 21, the front pocket 19 includes a plurality of pocket elastic members 21 including a first elastic member 21A, a second elastic member 21B and a third elastic member 21C. are preferably arranged side by side in the front-rear direction y of the front pocket 19 . The first elastic member 21A, the second elastic member 21B, and the third elastic member 21C are arranged in this order from the opening edge 19E side of the front pocket 19, and the separation distance between the second elastic member 21B and the third elastic member 21C is (Second spacing) is preferably wider than the spacing (first spacing) between the first elastic member 21A and the second elastic member 21B.

When the rear pocket 20 is provided with a plurality of pocket elastic members 22, the rear pocket 20 is provided with a plurality of pocket elastic members including a first elastic member 22A, a second elastic member 22B and a third elastic member 22C. It is preferable that the members 22 are arranged side by side in the front-rear direction y of the rear pocket 20 . The first elastic member 22A, the second elastic member 22B, and the third elastic member 22C are arranged in this order from the opening edge 20E side of the rear pocket 20, and the second elastic member 22B and the third elastic member 22C are separated. It is preferable that the spacing (second spacing) be wider than the spacing (first spacing) between the first elastic member 22A and the second elastic member 22B.

If the pockets 19 and 20 are provided with a plurality of pocket elastic members 21 and 22 as described above, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 are Firmly held by the first elastic members 21A, 22A and the second elastic members 21B, 22B near the opening edges 19E, 20E of the pockets 19, 20, the second spacing is larger than the first spacing. The third elastic members 21C and 22C provided apart from the second elastic members 21B and 22B prevent the front and rear ends of the inner pad 31 from being distorted in the pockets 19 and 20. It can be stably held in the pockets 19,20. Therefore, it becomes easy to appropriately install the inner pad 31 on the skin side of the disposable diaper 1 .

In the pocket elastic member 21 provided in the front pocket 19, the spacing (second spacing) between the second elastic member 21B and the third elastic member 21C is equal to the spacing (second spacing) between the first elastic member 21A and the second elastic member 21B ( is preferably 1.3 times or more, more preferably 1.5 times or more, still more preferably 1.8 times or more, preferably 5.0 times or less, and more preferably 4.0 times or less, 3.0 times or less is more preferable. In the pocket elastic member 22 provided in the rear pocket 19, the spacing (second spacing) between the second elastic member 22B and the third elastic member 22C is the same as the spacing between the first elastic member 22A and the second elastic member 22B. It is preferably 1.3 times or more, more preferably 1.5 times or more, still more preferably 1.8 times or more, preferably 5.0 times or less, and more preferably 4.0 times or less of (first separation interval). , 3.0 times or less is more preferable.

The pocket elastic members 21 and 22 are preferably fixed to the pockets 19 and 20 in a stretched state. The pocket elastic members 21 and 22 are also preferably arranged so as to overlap the absorbent core 10 . Specifically, at least one of the pocket elastic members 21 provided in the front pocket 19 is preferably arranged so as to overlap the absorbent core 10 . At least one of the pocket elastic members 22 provided in the back pocket 20 is preferably arranged so as to overlap the absorbent core 10 . By providing the pocket elastic members 21 and 22 in this manner, when the front and rear end portions of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear end portions of the inner pad 31 will be in contact with the absorbent core 10 and the pocket elastic member 21. , 22 and stably held in the pockets 19, 20. In the front pocket 19, it is preferable that at least the first elastic member 21A and the second elastic member 21B overlap with the absorbent core 10, and the third elastic member 21C also overlaps with the absorbent core 10. is more preferable. In the rear pocket 20, it is preferable that at least the first elastic member 22A and the second elastic member 22B overlap with the absorbent core 10, and the third elastic member 22C also overlaps with the absorbent core 10. is more preferable.

The pocket elastic member 21 provided in the front pocket 19 is preferably provided longer in the width direction x than the opening width W1 of the front pocket 19 . The pocket elastic member 22 provided in the rear pocket 20 is preferably provided longer in the width direction x than the opening width W2 of the rear pocket 20 . In other words, it is preferable that the pocket elastic members 21 and 22 extend further outward in the width direction x than both ends of the pockets 19 and 20 . Here, the opening widths W1 and W2 of the pockets 19 and 20 mean the lengths in the width direction x in the vicinity of the opening edges of the pockets 19 and 20 where the pocket elastic members 21 and 22 are provided. The neighborhood portion is preferably a portion along the opening edges 19E, 20E of the pockets 19, 20, particularly a portion including the first elastic members 21A, 22A and the second elastic members 22A, 22B. By providing the pocket elastic members 21 and 22 in this way, when the front and rear end portions of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear end portions of the inner pad 31 extend over the entire width direction x. The front and rear end portions of the inner pad 31 are held down by the members 21 and 22 and become difficult to slip out of the pockets 19 and 20.例文帳に追加

The opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 are preferably 70% or more, more preferably 80% or more, and even more preferably 90% or more of the width of the absorbent core 10. Even more preferably, it is wider than the width of the core 10 . On the other hand, the upper limit of the opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 is preferably 200% or less of the width of the absorbent core 10, more preferably 180% or less, and 150%. More preferably: As a result, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19 and 20, and the inner pad 31 inserted into the pockets 19 and 20 can be stably held. In addition, the width of the absorbent core 10 described here means that when the portions near the opening edges of the pockets 19 and 20 overlap the absorbent core 10, the width at the positions overlapping the portions near the opening edges of the pockets 19 and 20 Length of the absorbent core 10 in the width direction x length), and when the vicinity of the opening edge of the front pocket 19 is located on the front side of the front end of the absorbent core 10, it means the length of the front end of the absorbent core 10 in the width direction x , the length of the rear end of the absorbent core 10 in the width direction x when the vicinity of the opening edge of the rear pocket 20 is positioned rearward of the rear end of the absorbent core 10 .

It is preferable that both ends of the pockets 19 and 20 in the width direction x are joined to the exterior member 2 in the vicinity of the opening edges where the pocket elastic members 21 and 22 are provided. In this case, it is preferable not to join the exterior member 2 and/or the absorbent main body 7 between both ends in the width direction x of the vicinity of the opening edges of the pockets 19 and 20 . Both ends of the pockets 19 and 20 in the width direction x are thus joined to the exterior member 2, and in the contracted state of the pocket elastic members 21 and 22, the absorbent core 10 is positioned at the opening edges of the pockets 19 and 20. It is preferable to extend outward in the width direction x from both ends of the neighboring portion in the width direction x. In this case, both ends of the vicinity of the opening edges of the pockets 19 and 20 are positioned further outward in the width direction x than both ends of the absorbent core 10 in the width direction x when the pocket elastic members 21 and 22 are stretched. On the other hand, in the contracted state of the pocket elastic members 21 and 22, the portions near the opening edges of the pockets 19 and 20 contract in the width direction x, so that the both ends of the portions near the opening edges of the pockets 19 and 20 move toward the absorbent core. 10 are positioned inward in the width direction x from both ends in the width direction x. Therefore, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 are preferably pressed by the pocket elastic members 21 and 22, and the front and rear ends of the inner pad 31 are pushed into the pockets. It becomes difficult to slip out carelessly from 19 and 20. The contracted state of the pocket elastic member means, for example, that the pocket elastic member contracts when the disposable diaper is placed on a flat surface in a state where no force is applied to the pants-shaped disposable diaper as shown in FIG. means that the Further, since the pocket elastic member is located on the skin side, for observation, the disposable diaper may be turned over and placed on a flat surface to observe the contracted state of the pocket elastic member.

In the above case, in the contracted state of the pocket elastic members 21 and 22, the length between both ends in the width direction x of the vicinity of the opening edges of the pockets 19 and 20 overlaps with the vicinity of the opening edges of the pockets 21 and 22. Moreover, it is preferably 50% or more and 95% or less of the width of the absorbent core 10 extending outward in the width direction x from both ends in the width direction x of the vicinity of the opening edge. That is, in the contracted state of the pocket elastic members 21 and 22, the length between both ends in the width direction x of the vicinity of the opening edges of the pockets 19 and 20 is the length of the absorbent core 10 that overlaps the vicinity of the opening edges of the pockets 19 and 20. It is preferably 50% or more and 95% or less of the length between both ends in the width direction x of the absorbent core 10 at the position in the front-rear direction y. The ratio is more preferably 60% or more, still more preferably 65% or more, and preferably 90% or less, further preferably 85% or less. This facilitates insertion of the front and rear end portions of the inner pad 31 into the pockets 19 and 20 and prevents the front and rear end portions of the inner pad 31 from accidentally slipping out of the pockets 19 and 20 .

Of the pocket elastic members 21 and 22, at least the first elastic members 21A and 22A and the second elastic members 21B and 22B have a region of 1/4 or less on the side of the opening edges 19E and 20E of the pockets 19 and 20 in the front-rear direction y. , more preferably in an area of ⅙ or less, and even more preferably in an area of ⅛ or less. The first elastic members 21A and 22A are preferably arranged within 5 mm from the opening edges 19E and 20E of the pockets 19 and 20, more preferably within 3 mm, and preferably within 2 mm. It is even more preferred to be located in the area. As a result, gathers are preferably formed along the opening edges 19E, 20E of the pockets 19, 20, and the front and rear ends of the inner pad 31 are firmly held by the first elastic members 21A, 22A and the second elastic members 21B, 22B. easier. The third elastic members 21C, 22C are preferably arranged in an area of 1/2 or less, and preferably 1/3 or less, of the opening edges 19E, 20E in the front-rear direction y of the pockets 19, 20. is more preferable, and it is even more preferable that it is arranged in an area of 1/4 or less.

The pockets 19 and 20 may be further provided with fourth elastic members as the pocket elastic members 21 and 22 . In this case, the fourth elastic member is provided on the inner side of the pockets 19 and 20, that is, at a position further away from the opening edges 19E and 20E than the third elastic members 21C and 22C. In the front pocket 19, the spacing (third spacing) between the third elastic member 21C and the fourth elastic member is not particularly limited, but the spacing (first spacing) between the first elastic member 21A and the second elastic member 21B is is preferably wider than In the rear pocket 20, the spacing between the third elastic member 22C and the fourth elastic member (third spacing) is not particularly limited, but the spacing between the first elastic member 22A and the second elastic member 22B (first spacing) ). As a result, the front and rear ends of the inner pad 31 can be easily inserted deep into the pockets 19 and 20, and the front and rear ends of the inner pad 31 are less likely to be distorted in the pockets 19 and 20. The front and rear ends of 31 are stably held in the pockets 19,20. The pockets 19 and 20 may be further provided with a fifth elastic member as the pocket elastic members 21 and 22. In this case, the description of the fourth elastic member applies to the description of the fifth elastic member. In addition, it is preferable that the pockets 19 and 20 are not provided with other elastic members between the opening edges 19E and 20E and the first elastic members 21A and 22A.

It is preferable that the pocket elastic members 21 and 22 are arranged, for example, only in a region of 1/2 or less on the side of the opening edges 19E and 20E of the pockets 19 and 20 in the front-rear direction y. That is, when the pockets 19 and 20 are divided into two equal parts in the depth direction (the front-rear direction y), the pocket elastic members 21 and 22 are arranged in half the regions of the pockets 19 and 20 on the side of the opening edges 19E and 20E. However, it is preferable that the pocket elastic members 21 and 22 are not arranged in the inner half region of the pockets 19 and 20 . As a result, when inserting the front and rear end portions of the inner pad 31 into the pockets 19 and 20, it becomes easy to insert the front and rear end portions of the inner pad 31 deep into the pockets 19 and 20.例文帳に追加More preferably, the pocket elastic members 21 and 22 are arranged only in areas of ⅓ or less of the opening edges 19E and 20E of the pockets 19 and 20 in the front-rear direction y.

When the pockets 19 and 20 are formed from the cover sheets 17 and 18, the pocket elastic members 21 and 22 are preferably provided on the cover sheets 17 and 18, respectively. Specifically, the pocket elastic member 21 of the front pocket 19 is preferably provided on the front cover sheet 17, and extends along the rear edge 17CE of the front cover sheet 17 with the non-bonded region 17B forming the front pocket 19. It is preferable that they are provided in an overlapping manner. More preferably, the pocket elastic member 21 of the front pocket 19 also overlaps with the joint regions 17A located on both sides of the non-joint region 17B forming the front pocket 19 in the width direction x. The pocket elastic member 22 of the rear pocket 20 is preferably provided on the rear cover sheet 18, and along the front edge 18CE of the rear cover sheet 18, overlaps the non-bonded region 18B forming the rear pocket 20. It is preferably provided. More preferably, the pocket elastic member 22 of the rear pocket 20 also overlaps with the joint regions 18A located on both sides of the non-joint region 18B forming the rear pocket 20 in the width direction x.

The pocket elastic members 21 and 22 may be arranged on the skin surface side of the cover sheets 17 and 18 or may be arranged on the outer surface side of the cover sheets 17 and 18 . Further, the cover sheets 17 and 18 are folded back at least once at the creases extending in the width direction x to form folded portions along the opening edges 19E and 20E of the pockets 19 and 20, and the pocket elastic members 21 and 22 are It may be arranged between the folded cover sheets 17, 18 at the folded portion. In this case, the folds of the cover sheets 17 and 18 (one or more of the folds if two or more folds are used) become central side edges 17CE and 18CE of the cover sheets 17 and 18 to form the pockets 19 and 20. opening edges 19E and 20E are preferably formed. The folded portion is defined as a portion where a plurality of cover sheets 17 and 18 are stacked by folding back the cover sheets 17 and 18 at folds extending in the width direction x.

In FIG. 4, the cover sheets 17 and 18 are folded once (that is, at the center side edges 17CE and 18CE of the cover sheets 17 and 18) to the outside at the creases extending in the width direction x, and inside the pockets 19 and 20, Folded portions are formed along the opening edges 19E and 20E of the pockets 19 and 20, and the pocket elastic members 21 and 22 are disposed between the cover sheets 17 and 18 folded back to the outer surface side at the folded portions. . By providing the pocket elastic members 21 and 22 in the folding portions in this manner, the pocket elastic members 21 and 22 can be stably installed in the pockets 19 and 20 . In addition, since the pocket elastic members 21 and 22 do not come into direct contact with the wearer's skin, the disposable diaper 1 can be worn comfortably, and the front and rear ends of the inner pad 31 can be inserted into the pockets 19 and 20. At this time, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19 and 20 without being caught by the pocket elastic members 21 and 22 . As shown in FIG. 4, the folded portions are preferably formed by folding back the cover sheets 17 and 18 once to the outer surface side. The contact becomes flexible, and the pocket elastic members 21 and 22 can be stably installed in the pockets 19 and 20.例文帳に追加

When the front pocket 19 is formed with a folded portion, at least one of the pocket elastic members 21 provided in the front pocket 19 may be provided in the folded portion, but all the elastic members are provided in the folded portion. is preferred. When the folded portion is formed in the rear pocket 20, at least one of the pocket elastic members 22 provided in the rear pocket 20 may be provided in the folded portion. It is preferably provided.

The folded portion is preferably formed such that the length in the front-rear direction y is 10% or more and 50% or less of the depth lengths D1 and D2 of the pockets 19 and 20 . Specifically, the length of the folded portion of the front pocket 19 in the front-rear direction y is preferably 10% or more and 50% or less of the depth D1 of the front pocket 19 . Moreover, the length of the folded portion of the rear pocket 20 in the front-rear direction y is preferably 10% or more and 50% or less of the depth D2 of the rear pocket 20 . The ratio is more preferably 12% or more, more preferably 15% or more, more preferably 40% or less, and even more preferably 30% or less. If the folded portions are formed in this way, it becomes easy to provide the pocket elastic members 20 and 21 in the folded portions in terms of manufacturing, and the amount of the cover sheets 17 and 18 used to form the folded portions is excessive. can prevent it from increasing. The length D1 of the depth of the front pocket 19 means the length y in the front-rear direction from the opening edge 19E of the front pocket 19 to the joint region 17A corresponding to the front end 19H of the front pocket 19. The depth D2 means the length y in the front-rear direction from the opening edge 20E of the rear pocket 20 to the joint region 18A corresponding to the rear end 20H of the rear pocket 20. As shown in FIG.

The opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 may be the same or different. For example, the opening width W2 of the rear pocket 20 may be wider than the opening width W1 of the front pocket 19 . As a result, when the inner pad 31 is placed on the crotch portion R of the disposable diaper 1, the position of the front end portion of the inner pad 31 in the width direction x is accurately determined, and when the wearer moves his/her legs back and forth, the inner pad The inner pad 31 is less likely to come into contact with the leg, and the wearer is less likely to feel the inner pad 31 as a hindrance. As a result, the inner pad 31 is stably placed on the skin surface side of the disposable diaper 1, and the inner pad 31 can preferably receive urine or the like excreted by the wearer, and side leakage of urine or the like is less likely to occur. Become. Furthermore, when using a deformed inner pad 31 having a rear side portion wider than a front side portion, the front and rear end portions of the deformed inner pad 31 can be easily inserted into the pockets 19 and 20. The state in which the front and rear ends of the deformed inner pad 31 are inserted into the pockets 19 and 20 can be stably maintained. In this case, the opening width W2 of the rear pocket 20 is preferably 1.1 times or more, more preferably 1.2 times or more, preferably 2.0 times or less, and 1.8 times the opening width W1 of the front pocket 19. below is more preferable, and 1.6 times or less is even more preferable.

The depth D1 of the front pocket 19 and the depth D2 of the rear pocket 20 are preferably 20 mm or more, more preferably 30 mm or more, and even more preferably 50 mm or more. As a result, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 can be stably held. On the other hand, the depth D1 of the front pocket 19 and the depth D2 of the rear pocket 20 are preferably 150 mm or less, more preferably 120 mm or less, and even more preferably 100 mm or less. As a result, when the inner pad 31 is placed on the skin side of the disposable diaper 1 by inserting the front and rear ends of the inner pad 31 into the pockets 19 and 20, the inner pad 31 is less likely to shift in the front-rear direction y. It becomes difficult for the pad 31 to slip out of the pockets 19 and 20. - 特許庁

The depth D1 of the front pocket 19 and the depth D2 of the rear pocket 20 may be the same or different. For example, when a woman uses the disposable diaper 1 for incontinence, it is preferable that the depth D2 of the rear pocket 20 is longer than the depth D1 of the front pocket 19, considering the position of the urethral opening. . In this case, the depth D2 of the rear pocket 20 is preferably at least 1.1 times the depth D1 of the front pocket 19, more preferably at least 1.2 times, and preferably at most 2.5 times. 2.0 times or less is more preferable, and 1.6 times or less is even more preferable. On the other hand, when a man uses the disposable diaper 1 for incontinence, the depth D1 of the front pocket 19 is preferably longer than the depth D2 of the rear pocket 20, considering the position of the urethral opening. . In this case, the depth D1 of the front pocket 19 is preferably at least 1.1 times the depth D2 of the rear pocket 20, more preferably at least 1.2 times, and preferably at most 2.5 times. 2.0 times or less is more preferable, and 1.6 times or less is even more preferable.

The size of the front pocket 19 and the size of the rear pocket 20 may be the same or different. In addition, although it is preferable that the absorbent core 10 overlaps the pockets 19 and 20, the overlapping area of the front pocket 19 and the absorbent core 10 and the overlapping area of the rear pocket 20 and the absorbent core 10 are They may be the same or different. For example, the absorbent core 10 may overlap the rear pocket 20 over a larger area than the front pocket 19 . In this case, when the front and rear end portions of the inner pad 31 are inserted into the pockets 19 and 20, the rear end portion of the inner pad 31 is sandwiched between the absorbent core 10 and the wearer's skin and is stably placed in the rear pocket 20. easier to hold. Therefore, the rear end of the inner pad 31 is less likely to slip out of the rear pocket 20 even if the wearer turns his/her waist to the left or right.

From the viewpoint of facilitating insertion of the front and rear ends of the inner pad 31 into the pockets 19 and 20, the thickness of the front and/or rear ends of the absorbent core 10 is set to 1/3 of the thickness of the center of the absorbent core 10 in the front-rear direction y. It is preferably thinner than the thickness of the part. The thickness of the absorbent core 10 can be measured with a thickness gauge, for example, thickness gauge SM-130 manufactured by Teclock Co., Ltd. can be used. Specifically, the thickness is measured by sandwiching the absorbent core 10 between the anvil and the probe, and the thickness is measured with a thickness gauge SM-130 so that the final pressure is 2.2 N or less. The anvil and the probe have a circular contact surface with a diameter of 10 mm and a flat contact surface. The thickness of the front and rear ends of the absorbent core 10 is measured so that the center of the circular anvil with a diameter of 10 mm and the probe is located 10 mm away from the front or rear end of the absorbent core 10 . The thickness of the central ⅓ portion of the absorbent core 10 in the front-rear direction y is the thickness of three locations in the central ⅓ portion of the absorbent core 10 in the front-rear direction y, which are separated at approximately equal intervals in the front-rear direction y. It is obtained by measuring and calculating the average value. The thickness of the front end portion and/or the rear end portion of the absorbent core 10 is preferably 90% or less, more preferably 80% or less, of the central 1/3 thickness in the front-rear direction y of the absorbent core 10. , and preferably 20% or more, more preferably 30% or more.

The front cover sheet 17 forming the front pocket 19 is provided at least on the front trunk P and may be provided from the front trunk P to the crotch R. Therefore, the opening edge 19E of the front pocket 19 may be located at the front trunk portion P or at the crotch portion R. The front cover sheet 17 may be provided on the entire front trunk portion P, or may be provided only on a part of the front trunk portion P. As shown in FIG. The front cover sheet 17 is preferably provided wider than the absorbent main body 7 in the width direction x, and the length in the width direction x is substantially the same as that of the front body portion P of the exterior member 2. is preferred.

The rear cover sheet 18 forming the rear pocket 20 is provided at least on the rear trunk portion Q, and may be provided from the rear trunk portion Q to the crotch portion R. Therefore, the opening edge 20E of the rear pocket 20 may be positioned at the rear trunk portion Q or at the crotch portion R. The rear cover sheet 18 may be provided on the entire rear trunk portion Q, or may be provided on a part of the rear trunk portion Q only. The rear cover sheet 18 is preferably provided wider than the absorbent main body 7 in the width direction x, and the length of the rear trunk portion Q of the exterior member 2 in the width direction x is substantially the same. more preferably.

The front side cover sheet 17 is provided so as to substantially match the front side body portion P of the exterior member 2 in the width direction x, and the rear side cover sheet 18 is provided so as to be substantially aligned with the rear side body portion Q of the exterior member 2 in the width direction x. It is preferable that the front side cover sheet 17 and the rear side cover sheet 18 are joined to each other at the side seal portions 13 so as to substantially match each other. As a result, the front side cover sheet 17 and the rear side cover sheet 18 are less likely to come off from the exterior member 2, and the front side pocket 19 and the rear side pocket 20 are stably formed.

Preferably, the coversheets 17,18 are not joined to the absorbent body 7; Therefore, the joining area 17A of the front cover sheet 17 is preferably formed so as to join the front cover sheet 17 and the absorbent main body 2, and the joining area 18A of the back cover sheet 18 is formed so as to join the back cover sheet 18. and the absorbent main body 2 are preferably formed. More preferably, the front cover sheet 17 covers the front end of the absorbent main body 7 and is not joined to the absorbent main body 7, and the rear cover sheet 18 covers the rear end of the absorbent main body 7 and is absorbent. More preferably, it is not joined to the body 7 . This makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19 and 20 . Further, when the rising flaps 11 are provided on both sides of the absorbent body 7 in the width direction x on the skin surface side, the rising flaps 11 are preferably easily raised.

The cover sheets 17 and 18 are arranged in a portion including the central side edges 17CE and 18CE (for example, a region within 5 mm from the central side edges 17CE and 18CE) than both ends in the width direction x near the opening edges of the pockets 19 and 20. Non-bonding regions 17B and 18B may be formed outward in the width direction x. In this case, the central side edges 17CE and 18CE of the cover sheets 17 and 18 are not only at the opening edges 19E and 20E of the pockets 19 and 20, but also at the outer portions in the width direction x. Therefore, it is not joined to the main body 7 . If the non-bonded areas 17B, 18B are formed in the central side edges 17CE, 18CE of the cover sheets 17, 18 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19, 20. FIG.

The cover sheets 17 and 18 may be hydrophilic (liquid-permeable) or hydrophobic (liquid-impermeable), and sheet materials that can be used for the top sheet 8 and the back sheet 9 can be used. If the cover sheets 17 and 18 are hydrophilic, even if urine or the like is excreted on the cover sheets 17 and 18, the urine or the like can pass through the cover sheets 17 and 18, and the inner pad 31 can be made wider. can contribute to the absorption of urine and the like, which is preferable. In this case, both the front cover sheet 17 and the rear cover sheet 18 may be hydrophilic, or only one of them may be hydrophilic.

The front cover sheet 17 and the rear cover sheet 18 may be, for example, the front cover sheet 17 being hydrophilic and the rear cover sheet 18 being hydrophobic. In this case, when the inner pad 31 is placed on the skin side of the disposable diaper 1 and worn, a wider front portion of the inner pad 31 can contribute to absorption of urine and the like. On the other hand, since the back cover sheet 18 is hydrophobic, urine and the like can be prevented from leaking from the back side when the wearer is in the supine position, and urine and the like absorbed in the inner pad 31 can be prevented from leaking from the back side. Permeation through the cover sheet 18 and exudation can be prevented. Therefore, the feeling of wearing the disposable diaper 1 can be enhanced.

The front waist elastic member 15A provided on the front waist P of the exterior member 2 is preferably not arranged so as to overlap the absorbent core 10 . Alternatively, in the case where the front side body elastic member 15A is partially overlapped with the absorbent core 10, the front side body elastic member 15A is intermittently provided at the portion overlapping with the absorbent core 10. is preferred. By providing the front body elastic member 15A in the front body P of the exterior member 2 in this way, the front end of the absorbent core 10 is less likely to be distorted by the front body elastic member 15A, and the inner pad 31 is not easily deformed. The front end can be easily inserted into the front pocket 19. - 特許庁In addition, the front end of the inner pad 31 can be stably held while being inserted into the front pocket 19 . Note that "the front side waist elastic members 15A are not arranged to overlap the absorbent core 10" means that all of the plurality of front side waist elastic members 15A are not arranged to overlap the absorbent core 10.

It is preferable that the rear trunk elastic member 15B provided in the rear trunk Q of the exterior member 2 is not arranged so as to overlap the absorbent core 10 . Alternatively, when a part of the rear trunk elastic member 15B is arranged to overlap the absorbent core 10, the rear trunk elastic member 15B is intermittently provided at the part overlapping the absorbent core 10. preferably. By providing the rear trunk elastic member 15B in the rear trunk portion Q of the exterior member 2 in this manner, the rear end portion of the absorbent core 10 is less likely to be distorted by the rear trunk elastic member 15B. The rear end of the inner pad 31 can be easily inserted into the rear pocket 20.例文帳に追加In addition, the rear end of the inner pad 31 can be stably held while being inserted into the rear pocket 20 . Note that "the rear trunk elastic members 15B do not overlap the absorbent core 10" means that none of the plurality of rear trunk elastic members 15B overlaps the absorbent core 10. do.

As shown in FIG. 5, the front end 19H of the front pocket 19, that is, the far end of the front pocket 19, is positioned forward of the front end 7E1 of the absorbent main body 7, and the front end 19H of the front pocket 19 and the absorbent body 19 are located forward of the front end 7E1. It is preferable that at least part of the front waist elastic member 15A is arranged between the front ends 7E1 of the body 7. As shown in FIG. If the front side elastic member 15A is provided in this way, when the front end of the inner pad 31 is inserted into the front pocket 19 and worn, the front end of the inner pad 31 is worn by the front side elastic member 15A. The front end of the inner pad 31 can be stably held in the front pocket 19 by being pressed against the skin of the wearer. The front waist elastic member 15A disposed between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent main body 7 is located between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent main body 7. is preferably provided continuously in the

As shown in FIG. 6, the rear end 20H of the rear pocket 20, that is, the far end of the rear pocket 20, is located rearward of the rear end 7E2 of the absorbent main body 7, and the rear pocket 20 At least part of the rear trunk elastic member 15B is preferably arranged between the rear end 20H and the rear end 7E2 of the absorbent main body 7. As shown in FIG. If the rear trunk elastic member 15B is provided in this way, when the rear end of the inner pad 31 is inserted into the rear pocket 20 and worn, the rear end of the inner pad 31 is attached to the rear trunk. The elastic member 15</b>B presses the inner pad 31 against the wearer's skin, and the rear end of the inner pad 31 is stably held in the rear pocket 20 . The rear trunk elastic member 15B arranged between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent main body 7 is arranged between the rear end 20H of the rear pocket 20 and the absorbent main body 7. is preferably provided continuously between the rear ends 7E2 of the .

The present invention also provides a combination of an absorbent article comprising the above-described disposable diaper of the present invention and an inner pad arranged on the skin side of the disposable diaper. An inner pad is placed on the topsheet of the disposable diaper of the present invention. According to the combination of absorbent articles of the present invention, the inner pad can be stably arranged on the skin side of the disposable diaper by inserting the front and rear ends of the inner pad into the pocket of the disposable diaper. This will be described with reference to FIG. 8, in order to show the arrangement of the front and rear ends of the inner pad 31 in the pocket 20, for the sake of convenience, the flaps 11 rising on both sides in the width direction x on the skin surface side of the absorbent body 7 of the disposable diaper 1 are shown. are omitted. When the front and rear ends of the inner pad 31 are placed in the pocket 20, the inner pad 31 is placed between the rising flaps 11 of the absorbent main body 7 in the width direction x. The inner pad 31 can be stably held even in the direction x.

The inner pad 31 preferably has a topsheet, a backsheet and an absorbent core 32 disposed therebetween. The topsheet of the inner pad 31 is preferably liquid-permeable, and can be made of a material that can be used for the topsheet 8 of the disposable diaper 1 described above. The backsheet of the inner pad 31 may be liquid-permeable or liquid-impermeable, and can be made of a material that can be used for the topsheet 8 and the backsheet 9 of the disposable diaper 1 described above. . For the absorbent core 32 of the inner pad 31, the description of the absorbent core 10 of the disposable diaper 1 is referred to. The inner pad 31 may be provided with rising flaps on both sides in the width direction x on the skin surface side. As the shape of the inner pad 31, a substantially rectangular shape, an hourglass shape, a battledore shape, and the like are shown.

The width of the absorbent core 32 of the inner pad 31 is preferably narrower than the opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 . This makes it easier to insert the front and rear ends of the inner pad 31 into the front pocket 19 and the rear pocket 20 . On the other hand, the width of the absorbent core 32 of the inner pad 31 is preferably wider than the width of the absorbent core 10 of the disposable diaper 1 . In particular, it is preferable that the front and rear ends of the absorbent core 32 of the inner pad 31 are wider than the front and rear ends of the absorbent core 10 of the disposable diaper 1 . This makes it easier to install the inner pad 31 stably on the skin surface side of the disposable diaper 1 . For example, the width of the absorbent core 32 of the inner pad 31 is preferably 10% to 30% wider than the width of the absorbent core 10 of the disposable diaper 1 .

The length of the absorbent core 32 of the inner pad 31 in the front-rear direction y is preferably longer than the length in the front-rear direction y from the opening edge 19E of the front pocket 19 of the disposable diaper 1 to the opening edge 20E of the rear pocket 20. . As a result, the inner pad 31 can be stably placed on the skin side of the disposable diaper 1 with the front and rear ends of the inner pad 31 inserted into the front pocket 19 and the rear pocket 20 . The length of the absorbent core 32 of the inner pad 31 in the front-rear direction y is longer than the length in the front-rear direction y from the opening edge 19E of the front pocket 19 of the disposable diaper 1 to the opening edge 20E of the rear pocket 20 by 20 mm or more. , more preferably 40 mm or more, preferably 200 mm or less, and more preferably 160 mm or less.

1: disposable diaper 2: exterior member 3: waist opening 4: leg opening 5: inner sheet 6: outer sheet 7: absorbent main body 8: top sheet 9: back sheet 10: absorbent core 11: rising flap 12: Standing elastic member 13: Side seal portion 14: Leg elastic member 14A: Front leg elastic member 14B: Rear leg elastic member 15: Body elastic member 15A: Front body elastic member 15B: Rear Side trunk elastic member 16: Waist elastic member 17: Front cover sheet 17A: Bonded area 17B: Non-bonded area 17CE: Central side edge or rear side edge 17OE: Outer side edge 18: Back side cover sheet 18A: Bonded area, 18B: Non-bonded area, 18CE: Central side edge or front side edge, 18OE: Outer side edge 19: Front pocket, 19E: Opening edge 20: Rear pocket, 20E: Opening edge 21: For front pocket Elastic member 21A: first elastic member 21B: second elastic member 21C: third elastic member 22: back pocket elastic member 22A: first elastic member 22B: second elastic member 22C: third Elastic member 31: Inner pad 32: Absorptive core (of inner pad) P: front trunk Q: rear trunk R: crotch

Claims (16)

A disposable diaper having a front body portion, a rear body portion, and a crotch portion located therebetween and formed in a pants shape,
At least the crotch portion is provided with an absorbent main body having a top sheet, a back sheet, and an absorbent core disposed therebetween,
An exterior member is provided on the outer surface side of the absorbent main body, and the exterior member is arranged at least in the front body portion and the rear body portion, and the front body portion and the rear body portion of the exterior member are arranged in the width direction. joined together on both sides,
The skin surface side of the front trunk portion and/or the skin surface side of the rear trunk portion is provided with a pocket that opens toward the center in the front-rear direction of the disposable diaper,
In the pocket, a plurality of pocket elastic members including a first elastic member, a second elastic member and a third elastic member are arranged in the front-rear direction of the pocket along the opening edge of the pocket. ,
The first elastic member, the second elastic member, and the third elastic member are arranged in this order from the opening edge side of the pocket, and the separation distance between the second elastic member and the third elastic member is the first elastic member. and the second elastic member are spaced apart from each other. 2. The disposable diaper according to claim 1, wherein the opening edge of the pocket is formed at a position overlapping with the absorbent core. Both ends of the pocket in the width direction are joined to the exterior member in the vicinity of the opening edge where the pocket elastic member is provided,
3. The disposable diaper according to claim 2, wherein in the contracted state of the pocket elastic member, the absorbent core extends outward in the width direction beyond both width direction ends of the portion near the opening edge of the pocket. . In the contracted state of the pocket elastic member, the length between the two ends in the width direction of the portion near the opening edge of the pocket overlaps the portion near the opening edge of the pocket, and the portion near the opening edge 4. The disposable diaper according to claim 3, wherein the width of the absorbent core extending outward in the width direction is 50% or more and 95% or less of the width of the absorbent core. 5. The disposable diaper according to any one of claims 1 to 4, wherein at least the first elastic member and the second elastic member are provided in a region of 1/4 or less of the opening edge side in the front-rear direction of the pocket. A front pocket is provided as the pocket on the skin surface side of the front trunk,
The disposable diaper according to any one of claims 1 to 5, wherein a rear pocket is provided as the pocket on the skin surface side of the rear body portion. 7. The disposable diaper according to claim 6, wherein the depth of said rear pocket is longer than the depth of said front pocket. 7. The disposable diaper according to claim 6, wherein the depth of said front pocket is longer than the depth of said back pocket. A front pocket is provided as the pocket on the skin surface side of the front trunk,
The thickness of the front end portion of the absorbent core is thinner than the thickness of the central ⅓ portion of the absorbent core in the front-rear direction, and/or
A rear pocket is provided as the pocket on the skin surface side of the rear trunk,
The disposable diaper according to any one of claims 1 to 8, wherein the thickness of the rear end portion of the absorbent core is thinner than the thickness of the central ⅓ portion of the absorbent core in the front-rear direction. A cover sheet is provided on the skin surface side of the front trunk portion and/or the skin surface side of the rear trunk portion of the exterior member,
The cover sheet has a central side edge on the central side in the front-rear direction of the disposable diaper and an outer side edge on the outer side in the front-rear direction of the disposable diaper,
The cover sheet has a bonded region bonded to the exterior member and/or the absorbent main body and a non-bonded region bonded to neither the exterior member nor the absorbent main body, and the non-bonded region is the The pocket is formed by extending outward in the front-rear direction of the disposable diaper from the central side edge of the cover sheet in the front-rear direction, the pocket having an opening edge at the central side edge of the cover sheet,
The disposable diaper according to any one of claims 1 to 9, wherein the pocket elastic member is provided on the cover sheet. The cover sheet is folded outward at least once at a crease extending in the width direction to form a folded portion inside the pocket along the opening edge of the pocket,
11. The disposable diaper according to claim 10, wherein the pocket elastic member is disposed between the cover sheets folded back to the outer surface side at the folded portion. 12. The disposable diaper according to claim 11, wherein the length of the folded portion in the front-rear direction is 10% or more and 50% or less of the length of the depth of the pocket. The disposable diaper according to any one of claims 10 to 12, wherein said cover sheet has hydrophilicity. A front pocket is provided as the pocket on the skin surface side of the front trunk,
A plurality of front body elastic members extending in the width direction are arranged in the front-rear direction on the front body of the exterior member,
The front end of the front pocket is located forward of the front end of the absorbent body, and at least part of the front waist elastic member is located between the front end of the front pocket and the front end of the absorbent body. is located and/or
A rear pocket is provided as the pocket on the skin surface side of the rear trunk,
A plurality of rear trunk elastic members extending in the width direction are arranged in the front-rear direction on the rear trunk of the exterior member,
The rear end of the rear pocket is positioned rearward of the rear end of the absorbent main body, and the rear pocket is positioned between the rear end of the rear pocket and the rear end of the absorbent main body. The disposable diaper according to any one of claims 1 to 13, wherein at least part of the body elastic member is arranged. An absorbent article combination comprising the disposable diaper according to any one of claims 1 to 14 and an inner pad arranged on the topsheet. 16. The combination of absorbent articles according to claim 15, wherein the width of the absorbent core of the inner pad is wider than the width of the absorbent core of the disposable diaper and narrower than the width of the pocket opening.

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