Disposable diapers

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]

[0001] The present invention relates to a disposable diaper, and more particularly to a disposable diaper which can be suitably used in combination with an inner pad which is a supplementary incontinence pad. [Background technology]

[0002] Conventionally, a method of using a disposable diaper by placing an auxiliary urine pad on the skin-facing side is known. According to this method of use, the urine excreted by the wearer is first received by the urine pad, so the total usage cost of the absorbent article can be reduced by replacing only the urine pad as needed and continuing to use the disposable diaper attached to the outside of it. In addition, by replacing only the urine pad, the caregiver can easily perform the replacement work compared to replacing the disposable diaper attached to the outside of the urine pad.

[0003] As a disposable diaper suitable for use with an auxiliary urine pad, for example, Patent Document 1 discloses a pants-type disposable diaper having an absorbent body having a top sheet, a back sheet, and an absorbent body arranged between these sheets, an exterior member to which the absorbent body is at least partially fixed and which holds the absorbent body against a wearer, and a stretchable belt-shaped sheet is arranged in the waist circumference direction of the diaper at both longitudinal end regions of the absorbent body, and at least a portion of the belt-shaped sheet located in the outer region of both side edges of the absorbent body is adhesively fixed to the exterior member. Patent Document 2 discloses a disposable diaper that includes an inner body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body interposed therebetween, and an exterior body fixed to the outer surface of the inner body and extending to the front and rear of the inner body from the front body to the rear body, and the inner surface of each of the front body and the rear body is provided with a pocket opening to the center in the front-rear direction. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-29609 A [Patent Document 2] JP 2011-206218 A Summary of the Invention [Problem to be solved by the invention]

[0005] As described above, conventionally, disposable diapers with pockets or the like on the skin side of the diaper are known as disposable diapers suitable for use with supplementary urine pads, but when inserting the supplementary urine 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 supplementary urine pad in the pocket. The present invention has been made in view of the above circumstances, and its object is to provide a disposable diaper that can stably hold the front and / or rear ends of the supplementary urine pad in the pocket on the skin side of the disposable diaper. [Means for solving the problem]

[0006] The disposable diaper of the present invention, which has been able to solve the above problems, is formed in a pants shape and has a front torso section, a rear torso section, and a crotch section located therebetween, and at least the crotch section 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 disposed at least in the front torso section and the rear torso section, and the front torso section and the rear torso section of the exterior member are joined to each other at both sides in the width direction, and the skin-facing side of the front torso section and / or the skin-facing side of the rear torso section are bonded to each other at both sides in the width direction, and The front side has a pocket that opens toward the center in the front-to-back direction of the disposable diaper, and the pocket has a plurality of pocket elastic members including a first elastic member, a second elastic member and a third elastic member arranged in a line in the front-to-back direction of the pocket along the opening edge of the pocket, the first elastic member, the second elastic member and the third elastic member being arranged in this order from the opening edge side of the pocket, and the separation distance (second separation distance) between the second elastic member and the third elastic member is wider than the separation distance (first separation distance) between the first elastic member and the second elastic member.

[0007] As described above, the disposable diaper of the present invention has a pocket on the skin-facing side of the front torso section and / or the skin-facing side of the rear torso section, and the pocket has a plurality of pocket elastic members. When an 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, and the third elastic member provided away from the second elastic member so that the second separation distance is wider than the first separation distance prevents the front and rear ends of the inner pad from being distorted in the pocket, and the front and rear ends of the inner pad can be stably held in the pocket. This makes it easy to properly install the inner pad on the skin-facing side of the disposable diaper. Note that the front and rear ends of the inner pad refer to the front and / or rear ends of the inner pad.

[0008] The opening edge of the pocket is preferably formed at a position overlapping the absorbent core. By providing the pocket in this manner, the front and rear ends of the inner pad can be easily inserted into the pocket. In addition, when the front and rear ends of the inner pad are inserted into the pocket, the front and rear ends are supported by the absorbent core, so that the front and rear ends of the inner pad are less likely to accidentally come out of the pocket.

[0009] It is preferable that the pocket has both widthwise ends joined to the exterior member in the vicinity of the opening edge where the pocket elastic member is provided, and that when the pocket elastic member is in a contracted state, the absorbent core extends outward in the widthwise direction from both widthwise ends of the pocket opening edge vicinity. In this case, when the pocket elastic member is in a stretched state, both ends of the pocket opening edge vicinity are located outward in the widthwise direction from both widthwise ends of the absorbent core, whereas when the pocket elastic member is in a contracted state, the pocket opening edge vicinity contracts in the widthwise direction, so that both ends of the pocket opening edge vicinity are located inward in the widthwise direction from both widthwise ends 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 suitably held down by the pocket elastic member, making it difficult for the front and rear ends of the inner pad to inadvertently come out of the pocket.

[0010] In the above case, when the pocket elastic member is in a contracted state, the length between both ends in the width direction of the portion adjacent to the opening edge of the pocket is preferably 50% to 95% of the width of the absorbent core that overlaps with the portion adjacent to the opening edge of the pocket and extends widthwise outward beyond both ends in the width direction of the portion adjacent to the opening edge. This makes it easy to insert the front and rear ends of the inner pad into the pocket and makes it difficult for the front and rear ends of the inner pad to inadvertently come out of the pocket.

[0011] Of the pocket elastic members, at least the first and second elastic members are preferably provided in an area of ​​1 / 4 or less on the opening edge side in the front-to-rear direction of the pocket, which allows gathers to be appropriately formed along the opening edge of the pocket, making it easier for the front and rear ends of the inner pad to be firmly held by the first and second elastic members.

[0012] It is preferable that the disposable diaper is provided with a front pocket as the pocket on the skin-facing side of the front torso section, and a rear pocket as the pocket on the skin-facing side of the rear torso section. By providing both a front pocket and a rear pocket in this manner, the front end of the inner pad can be inserted into the front pocket and the rear end into the rear pocket, so that the inner pad can be stably placed on the skin-facing side of the disposable diaper.

[0013] The depth of the front pocket and the depth of the rear 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 rear pocket is longer than the depth of the front pocket, taking into consideration the position of the urethral opening. On the other hand, when a man uses a disposable diaper for incontinence, it is preferable that the depth of the front pocket is longer than the depth of the rear pocket, taking into consideration the position of the urethral opening.

[0014] In the disposable diaper, it is preferable that the pocket is a front pocket on the skin-facing side of the front torso section, and the thickness of the front end of the absorbent core is thinner than the thickness of the central 1 / 3 of the absorbent core in the front-to-back direction, and / or that the pocket is a rear pocket on the skin-facing side of the rear torso section, and the thickness of the rear end of the absorbent core is thinner than the thickness of the central 1 / 3 of the absorbent core in the front-to-back direction. By forming the absorbent core in this manner, it becomes easier to insert the front and rear ends of the inner pad into the pockets.

[0015] The pocket is preferably formed by providing a cover sheet on the skin-facing side of the front torso section and / or the skin-facing side of the rear torso section of the exterior member. Specifically, a cover sheet is provided on the skin-facing side of the front torso section and / or the skin-facing side of the rear torso section of the exterior member, the cover sheet has a central edge on the center side in the front-rear direction of the disposable diaper and an outer edge on the outer side in the front-rear direction of the disposable diaper, the cover sheet has a bonded area bonded to the exterior member and / or the absorbent main body and a non-bonded area not bonded to either the exterior member or the absorbent main body, the non-bonded area extends from the central edge in the front-rear direction of the cover sheet outward in the front-rear direction of the disposable diaper, thereby forming the pocket with the central edge of the cover sheet as an opening edge, and the pocket elastic member is preferably provided on the cover sheet. By providing a cover sheet in this manner, the pocket can be easily formed in the disposable diaper. In addition, the amount of sheet material used to form the pocket can be reduced.

[0016] It is preferable that the cover sheet is folded back at least once on the outer surface side along a crease extending in the width direction, a folded-back portion is formed on the inside of the pocket along the opening edge of the pocket, and the pocket elastic member is disposed between the cover sheet folded back on the outer surface side at the folded-back portion. By providing the pocket elastic member at the folded-back portion in this manner, the pocket elastic member can be stably installed in the pocket. In addition, since the folded-back portion is provided on the outer surface side of the cover sheet, the folded-back portion does not directly contact the wearer's skin, so that the disposable diaper can be made comfortable to wear, and the front and rear ends of the inner pad can be easily inserted into the pocket without being caught by the pocket elastic member.

[0017] The length of the fold-in portion in the front-rear direction is preferably 10% to 50% of the depth of the pocket. If the fold-in portion is formed in this manner, it becomes easier to provide the pocket elastic member in the fold-in portion in manufacturing, and it is possible to prevent an excessive increase in the amount of cover sheet used to form the fold-in portion.

[0018] It is preferable that the disposable diaper has a front pocket as the pocket on the skin-facing side of the front torso portion, the front torso portion of the outer cover has a plurality of front torso elastic members extending in the width direction lined up in the front-to-back direction, the front end of the front pocket is located forward of the front end of the absorbent main body, and at least a part of the front torso elastic member is disposed between the front end of the front pocket and the front end of the absorbent main body; and / or a rear pocket is provided as the pocket on the skin-facing side of the rear torso portion, the rear torso portion of the outer cover has a plurality of rear torso elastic members extending in the width direction lined up in the front-to-back direction, the rear end of the rear pocket is located rearward of the rear end of the absorbent main body, and at least a part of the rear torso elastic member is disposed between the rear end of the rear pocket and the rear end of the absorbent main body. If the outer member is provided with a front torso elastic member and / or a rear torso elastic member in this manner, when the front and rear ends of the inner pad are inserted into a pocket and worn, the front and rear ends of the inner pad are pressed against the wearer's skin by the front torso elastic member and / or the rear torso elastic member, making it easier for the front and rear ends of the inner pad to be held stably within the pocket.

[0019] The present invention also provides a combination of an absorbent article having the above-described disposable diaper of the present invention and an inner pad disposed on the top sheet of the disposable diaper. According to the combination of the absorbent article of the present invention, the inner pad can be stably disposed on the skin-facing side of the disposable diaper by inserting the front and rear ends of the inner pad into the pockets of the disposable diaper.

[0020] In the above combination of absorbent articles, it is preferable that the width of the absorbent core of the inner pad is wider than that of the absorbent core of the disposable diaper and narrower than the opening width of the pocket, which makes it easier to insert the inner pad into the pocket and easier to stably place it on the skin-facing side of the disposable diaper. Effect of the Invention

[0021] In the disposable diaper of the present invention, when the auxiliary inner pad is inserted into a pocket provided on the skin-facing side of the disposable diaper, the front and rear ends of the inner pad are firmly held by the first and second elastic members near the opening edge of the pocket, and the third elastic member provided away from the second elastic member prevents the front and rear ends of the inner pad from being distorted inside the pocket, so that the front and rear ends of the inner pad can be stably held inside the pocket. This makes it easy to properly place the inner pad on the skin-facing side of the disposable diaper. [Brief description of the drawings]

[0022] [Figure 1] 1 is a perspective view showing an example of a disposable diaper according to the present invention. FIG. [Diagram 2] FIG. 2 is an example of a plan view of the side seal portion of the disposable diaper shown in FIG. 1 when the front and rear waist sections are uncoupled and laid out flat, as viewed from the skin-facing side. [Diagram 3] 3 shows a cross-sectional view of the disposable diaper shown in FIG. 2 taken along line III-III. [Figure 4] 4 shows a cross-sectional view of the disposable diaper shown in FIG. 2 taken along line IV-IV. [Diagram 5] 3 is a partial plan view of the disposable diaper shown in FIG. 2 from the front torso portion to the crotch portion. [Figure 6] 3 is a partial plan view of the disposable diaper shown in FIG. 2 from a rear waist portion to a crotch portion. [Figure 7] In the plan view of the disposable diaper shown in FIG. 2, an example of forming a joining region of the cover sheet to the exterior member is shown. [Figure 8]This shows an example in which a supplementary urine pad (inner pad) is placed on the skin-facing side of the disposable diaper shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] An embodiment of the disposable diaper of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiment shown in the drawings. Figs. 1 to 6 show an example of the disposable diaper of the present invention. Fig. 1 shows a perspective view of the disposable diaper, Fig. 2 shows a plan view of the disposable diaper shown in Fig. 1 in a state where the front and rear torso sections are untied and the disposable diaper is laid out flat in a side seal portion, as viewed from the skin side, Fig. 3 shows a cross-sectional view of the disposable diaper shown in Fig. 2 taken along line III-III, Fig. 4 shows a cross-sectional view of the disposable diaper shown in Fig. 2 taken along line IV-IV, Fig. 5 shows a partial plan view of the disposable diaper shown in Fig. 2 from the front torso section to the crotch section, and Fig. 6 shows a partial plan view of the disposable diaper shown in Fig. 2 from the rear torso section to the crotch section. 2, 7 and 8 show plan views of the side seal portion of the disposable diaper when the front and rear torso portions are released and laid out flat, as viewed from the skin side. In the figures, arrow x indicates the width direction of the disposable diaper, arrow y indicates the front-to-back direction of the disposable diaper, and the direction perpendicular to the plane formed by arrows x and y indicates the thickness direction z of the disposable diaper.

[0024] A disposable diaper 1 in an embodiment of the present invention has a front torso section P, a rear torso section Q, and a crotch section R located therebetween, a waist opening 3, and a pair of leg openings 4, and is formed into a pants-like shape as shown in Fig. 1. In detail, as shown in Fig. 2, the disposable diaper 1 has a front-to-back direction y and a width direction x, and has a front torso section P, a rear torso section Q, and a crotch section R located therebetween in the front-to-back direction y, and the front torso section P and the rear torso section Q are joined to each other at both sides in the width direction x, thereby forming a pants-like shape having the waist opening 3 and a pair of leg openings 4 as shown in Fig. 1.

[0025] In the disposable diaper 1, the front-rear direction y corresponds to a direction extending in the front-rear direction of the crotch of a wearer when the diaper is worn. The front-rear direction y corresponds to a vertical direction of the disposable diaper 1 in a state in which it is formed into a pants-like shape, for example, as shown in FIG. 1. The width direction x corresponds to a 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 a thickness direction z shown in FIG. 3 and FIG. 4. The skin side means the skin side of the wearer when the diaper is worn, and the outer side means the opposite side to the skin side. The front-rear direction y, width direction x, and thickness direction z of the disposable diaper 1 are defined as the same directions with respect to the front-rear direction, width direction, and thickness direction of each member constituting the disposable diaper 1. The skin side and outer side of the disposable diaper 1 are also defined as the same surface sides with respect to the skin side and outer side of each member constituting the disposable diaper 1.

[0026] 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 torso section P corresponds to the portion that contacts the wearer's stomach when the diaper is worn, and the rear torso section Q corresponds to the portion that contacts the wearer's back when the diaper is worn. In the pants-shaped disposable diaper 1, the front torso section P and the rear torso section Q correspond to the portions located between the waist opening 3 and the leg openings 4. The crotch section R is located between the front torso section P and the rear torso section Q, and corresponds to the portion that contacts the wearer's crotch. The crotch section R is located between a pair of leg openings 4, and is not joined to each other on either side in the width direction x.

[0027] The crotch region R of the disposable diaper 1 is provided with an absorbent main body 7 having an absorbent core 10 disposed between a top sheet 8 and a back sheet 9 (see Figs. 2 to 4). The absorbent main body 7 is required to be present at least in the crotch region R, and preferably extends to at least a part of the front torso region P and / or the rear torso region Q. More preferably, the absorbent main body 7 extends from the crotch region R to at least a part of the front torso region P and at least a part of the rear torso region Q. In the disposable diaper 1 shown in the drawings, the absorbent main body 7 having the absorbent core 10 disposed between a top sheet 8 and a back sheet 9 is provided on the skin-facing side of the outer cover member 2 formed in a pants-like shape. The top sheet 8 is disposed on the skin-facing side of the absorbent core 10, and the back sheet 9 is disposed on the outer surface side of the absorbent core 10.

[0028] The top sheet 8 is preferably liquid permeable, and may be, for example, a nonwoven fabric made of hydrophilic fibers such as cellulose, rayon, cotton, etc., or a nonwoven fabric made of hydrophobic fibers such as polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), etc., in which the surface of the hydrophobic fibers has been made hydrophilic with a surfactant. The top sheet 8 may also be a woven fabric, a knitted fabric, a perforated plastic film, etc.

[0029] The back sheet 9 is preferably liquid impermeable, and may be made of, for example, a nonwoven fabric made of hydrophobic fibers such as polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), or a plastic film. A laminate of a nonwoven fabric and a plastic film may also be used.

[0030] When the top sheet 8 or the back sheet 9 is made of a nonwoven fabric, it is preferable to use a spunbond nonwoven fabric, an air-through nonwoven fabric, a point-bond nonwoven fabric, a melt-blown nonwoven fabric, an air-laid nonwoven fabric, an SMS nonwoven fabric, or the like.

[0031] The absorbent core 10 is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. For example, a molded body obtained by molding an absorbent material into a predetermined shape can be used as the absorbent core 10. The absorbent core 10 may be covered with a sheet member such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable nonwoven fabric. Examples of the absorbent material contained in the absorbent core 10 include hydrophilic fibers such as cellulose fibers (for example, crushed pulp fibers), and water-absorbent resins such as polyacrylic acid, polyaspartic acid, cellulose, and starch-acrylonitrile. The absorbent material may also contain heat-welding fibers such as polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and polyamide fibers such as nylon. These heat-welding fibers may be hydrophilized with a surfactant or the like to increase their affinity with body fluids such as urine.

[0032] The absorbent material preferably contains hydrophilic fibers in order to increase the absorption rate of urine and the like. Also, in order to increase the absorption capacity, the absorbent material preferably contains a water-absorbent resin. Therefore, the absorbent core 10 preferably contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, it is preferable to use an assembly of hydrophilic fibers mixed with or sprayed with a water-absorbent resin.

[0033] The absorbent core 10 may be a sheet-like absorbent body. Examples of the sheet-like absorbent body include those formed with absorbent resin between nonwoven fabrics and no pulp fibers. Since the sheet-like absorbent body formed in this way has absorbent resin between the nonwoven fabrics, it can achieve a high absorption capacity. Furthermore, since the sheet-like absorbent body does not have pulp fibers between the nonwoven fabrics, it can be formed thin and not bulky.

[0034] The absorbent core 10 is required to be present at least in the crotch region R, and preferably extends to at least a portion of the front torso region P and / or at least a portion of the rear torso region 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 shuttlecock shape. In the drawings, the absorbent core 10 is formed into a substantially rectangular shape.

[0035] The absorbent body 7 is preferably provided with rise flaps 11 on both sides in the width direction x on the skin-facing side. The rise flaps 11 can prevent lateral leakage of excrement such as urine. The rise flaps 11 are preferably liquid-impermeable. The rise flaps 11 are preferably provided with rise elastic members 12 at their upper ends (ends on the wearer side) in the risen state, and the contraction force of the rise elastic members 12 encourages the rise flaps 11 to rise.

[0036] An exterior member 2 is provided on the outer surface side of the absorbent main body 7, and the exterior member 2 is disposed on at least the front torso portion P and the rear torso portion Q. The front torso portion P and the rear torso portion Q of the exterior member 2 are joined to each other at side seal portions 13 on both sides in the width direction x, and when the disposable diaper 1 is worn, the exterior member 2 covers the waist of the wearer. The side seal portions 13 are formed, for example, by joining the front torso portion P and the rear torso portion Q to each other on both sides in the width direction x by welding.

[0037] In one embodiment, the exterior member 2 may be disposed only in the front torso portion P and the rear torso portion Q. In this case, the absorbent main body 7 is disposed so as to connect the front torso portion P and the rear torso portion Q of the exterior member 2, the absorbent main body 7 extends from the crotch portion R to at least a part of the front torso portion P and at least a part of the rear torso portion Q, and a part of the absorbent main body 7 is exposed on the outer surface side of the disposable diaper 1 at the crotch portion R. In another embodiment, the exterior member 2 may be disposed in the front torso portion P, the crotch portion R, and the rear torso portion Q. For example, the exterior member 2 may be formed such that the front torso portion P, the rear torso portion Q, and the crotch portion R located therebetween are continuously formed. In this case, the exterior member 2 can be formed into a pants-like shape by joining the front torso portion P and the rear torso portion Q to each other at the side seal portion 13, and the absorbent main body 7 is disposed on at least the skin-facing side of the crotch portion R of the exterior member 2 formed into a pants-like shape. Alternatively, the exterior member 2 may be separated in the front-rear direction y at the crotch portion R, and may be composed of a portion extending from the front torso portion P to the crotch portion R and a portion extending from the rear torso portion Q to the crotch portion R, with the absorbent body 7 provided to connect both portions. In the disposable diaper 1 shown in the drawings, the exterior member 2 is formed into a pants-like shape as shown in FIG.

[0038] The exterior member 2 is preferably provided so as to extend outward in the width direction x beyond the absorbent main body 7 in the front torso portion P and the rear torso portion Q. The exterior member 2 is also preferably provided so as to extend outward in the width direction x beyond the absorbent main body 7 in the crotch portion R. The exterior member 2 is also preferably provided so as to extend outward in the front-to-back direction y, i.e., forward and backward, beyond the absorbent main body 7.

[0039] The exterior member 2 preferably has an inner sheet 5 and an outer sheet 6 disposed on the outer surface side of the inner sheet 5. The absorbent body 7 is preferably provided on the skin-facing side of the inner sheet 5. The inner sheet 5 and the outer sheet 6 may be liquid-permeable or liquid-impermeable, and may use sheet materials that can be used for the top sheet 8 and the back sheet 9. In the drawings, the inner sheet 5 and the outer sheet 6 are each formed to have a pants-like shape, but when the exterior member 2 is formed to have a pants-like shape, it is sufficient that at least one of the inner sheet 5 and the outer sheet 6 is formed to have a pants-like shape. 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 region R.

[0040] The outer cover 2 is preferably provided with leg elastic members 14 along the edge of the leg opening 4. The leg elastic members 14 are, for example, composed of a front leg elastic member 14A provided along the front edge of the leg opening 4 across the crotch region R, and a rear leg elastic member 14B provided along the rear edge of the leg opening 4 across the crotch region R. The front leg elastic member 14A and the rear leg elastic member 14B provide elastic members along almost the entire edge of the leg opening 4, forming leg gathers along the wearer's legs, thereby preventing leakage of urine, etc. from the crotch region. In the drawings, the front leg elastic member 14A and the rear leg elastic member 14B are provided spaced apart from each other, but the front leg elastic member 14A and the rear leg elastic member 14B may be partially in contact with each other or may cross each other. When the exterior member 2 is composed of an inner sheet 5 and an outer sheet 6, the leg elastic member 14 is preferably disposed between the inner sheet 5 and the outer sheet 6, and is preferably adhered to the inner sheet 5 and / or the outer sheet 6.

[0041] It is preferable that a plurality of torso elastic members 15 extending in the width direction x are provided in the front torso portion P and the rear torso portion Q of the outer cover member 2. The torso elastic members 15 are provided between the waist opening 3 and the leg openings 4. The torso elastic members 15 improve the fit around the wearer's torso. Among 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, which form waist gathers along the wearer's waist and prevent leakage of excrement such as urine from the back or abdomen. In the drawing, the waist elastic members 16 are provided at narrower intervals in the front-rear direction y than the torso elastic members 15.

[0042] The torso elastic member 15 is preferably provided between the inner sheet 5 and the outer sheet 6. In this case, the torso 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, or the outer sheet 6 may be folded back toward the inner sheet 5 at the edge of the waist opening 3 of the exterior member 2, and the waist elastic member 16 may be provided between the folded-back outer sheet 6 (see FIG. 4). In this case, the waist elastic member 16 is preferably adhered to the outer sheet 6.

[0043] The elastic members provided in the disposable diaper 1 may be made of elastic and stretchable materials such as polyurethane threads, polyurethane films, and natural rubber that are commonly used in disposable diapers. Each elastic member is preferably fixed to the diaper in a stretched state, and is preferably fixed with an adhesive such as a hot melt adhesive. For example, polyurethane threads having a fineness of 40 to 1,240 dtex are stretched at a ratio of 1.1 to 5.0 and then fixed. A rubber-based hot melt adhesive is preferably used as the adhesive. The ratio is defined as 1.0 in the non-stretched state.

[0044] As shown in Figures 2 and 4, the disposable diaper 1 is provided with pockets 19, 20 on the skin-facing side of the front torso portion P and the rear torso portion Q, the pockets 19, 20 being open toward the center in the front-rear direction y of the disposable diaper 1. By providing the pockets 19, 20 in this manner, the disposable diaper 1 can stably position a supplementary urine pad (hereinafter referred to as an "inner pad") on the skin-facing side of the disposable diaper 1. Figure 8 shows an example in which an inner pad 31 is positioned on the skin-facing side of the disposable diaper 1 shown in Figure 2. However, by inserting the front and rear ends of the inner pad 31 into the pockets 19, 20 and holding down the front and rear ends of the inner pad 31 with the pocket elastic members arranged along the opening edges, the inner pad 31 can be stably positioned on the skin-facing side of the disposable diaper 1. The pocket 19 provided on the skin-facing side of the front torso portion P is referred to as the "front pocket" or "front pocket 19," and the pocket 20 provided on the skin-facing side of the rear torso portion Q is referred to as the "rear pocket" or "rear pocket 20." In this specification, "pockets 19, 20" refer to the front pocket 19 and / or the rear pocket 20. The disposable diaper 1 may be provided with either the front pocket 19 or the rear pocket 20, or may be provided with both, but it is preferable that both the front pocket 19 and the rear pocket 20 are provided.

[0045] The pockets 19, 20 can be formed by providing cover sheets 17, 18 on the skin-facing side of the front torso section P and / or the skin-facing side of the rear torso section Q of the exterior member 2. Specifically, the front pocket 19 can be formed by providing a front cover sheet 17 on the skin-facing side of the front torso section P of the exterior member 2, and the rear pocket 20 can be formed by providing a rear cover sheet 18 on the skin-facing side of the rear torso section Q of the exterior member 2. In this specification, the "cover sheets 17, 18" refer to the front cover sheet 17 and / or the rear cover sheet 18. A method for forming the pockets 19, 20 from the cover sheets 17, 18 will be described in detail with reference to FIG. 7.

[0046] Fig. 7 shows an example of the formation of joining regions where the cover sheets 17, 18 are joined to the exterior member 2 for the disposable diaper 1 shown in Fig. 2. In Fig. 7, the joining regions of the cover sheets 17, 18 to the exterior member 2 are shown by cross-hatching, and the outer edges of the pockets 19, 20 are shown by two-dot chain lines. For ease of understanding, the leg elastic members, torso elastic members, waist elastic members, and pocket elastic members described below are omitted.

[0047] The coversheets 17, 18 have central edges 17CE, 18CE at the central side in the front-to-rear direction y of the disposable diaper 1 and outer edges 17OE, 18OE at the outer sides in the front-to-rear direction y of the disposable diaper 1. In the front coversheet 17, the central edge 17CE means the rear edge of the front coversheet 17, and the outer edge 17OE means the front edge of the front coversheet 17. In the rear coversheet 18, the central edge 18CE means the front edge of the rear coversheet 18, and the outer edge 18OE means the rear edge of the rear coversheet 18. In the following description, the reference symbol "17CE" is used for both the "central edge" and the "rear edge" of the front coversheet 17, and the reference symbol "18CE" is used for both the "central edge" and the "front edge" of the rear coversheet 18.

[0048] The cover sheets 17, 18 have bonded regions 17A, 18A bonded to the exterior member 2 and non-bonded regions 17B, 18B not bonded to either the exterior member 2 or the absorbent body 7, and the non-bonded regions 17B, 18B extend outward from the central side edges 17CE, 18CE of the cover sheets 17, 18 in the front-to-rear direction y of the disposable diaper 1 to form pockets 19, 20 with the central side edges 17CE, 18CE of the cover sheets 17, 18 as opening edges 19E, 20E. Specifically, the front cover sheet 17 has a bonded region 17A bonded to the exterior member 2 and a non-bonded region 17B not bonded to either the exterior member 2 or the absorbent body 7, and the non-bonded region 17B extends forward from the rear side edge 17CE of the front cover sheet 17 to form a front pocket 19 with the rear side edge 17CE of the front cover sheet 17 as an opening edge 19E. The rear cover sheet 18 has a joining region 18A joined to the exterior member 2 and a non-jointed region 18B not joined to either the exterior member 2 or the absorbent body 7, and the non-jointed region 18B extends rearward from the front edge 18CE of the rear cover sheet 18, forming a rear pocket 20 with the front edge 18CE of the rear cover sheet 18 as an opening edge 20E. By providing the cover sheets 17 and 18 in this manner, the pockets 19 and 20 can be easily formed. In addition, the amount of sheet material used to form the pockets 19 and 20 can be reduced. Although not shown in the drawings, the joining regions 17A and 18A of the cover sheets 17 and 18 may be formed to join at least a part of the absorbent body 7 together with the exterior member 2 or instead of the exterior member 2.

[0049] In the joining regions 17A, 18A of the cover sheets 17, 18, the joining means between the cover sheets 17, 18 and the exterior member 2 and / or the absorbent body 7 is not particularly limited, and any known joining means such as welding (for example, heat sealing or ultrasonic welding) or adhesives can be used. Conveniently, the cover sheets 17, 18 are joined to at least a part of the exterior member 2 and / or the absorbent body 7 by an adhesive.

[0050] 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 by a predetermined width or more (for example, a width of 50 mm or more or 80 mm or more). At the opening of the front pocket 19, bonded regions 17A exist on both sides of the non-bonded region 17B of the front cover sheet 17 in the width direction x, and the rearmost part of the non-bonded region 17B located between the bonded regions 17A on both sides becomes the opening of the front 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, i.e., from the rear edge 17CE of the front cover sheet 17 toward the front, or may be formed with a variable width.

[0051] The rear pocket 20 is formed by extending the non-bonded region 18B of the rear cover sheet 18 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). At the opening of the rear pocket 20, bonded regions 18A exist on both sides of the non-bonded region 18B of the rear cover sheet 18 in the width direction x, and the frontmost part of the non-bonded region 18B located between the bonded regions 18A on both sides becomes the opening of the rear pocket 20. The non-bonded region 18B forming the rear pocket 20 may be formed with a constant width from the opening edge 20E of the rear pocket 20 toward the depth direction, i.e., from the front edge 18CE of the rear cover sheet 18 toward the rear, or may be formed so that the width varies.

[0052] Although not shown in the drawings, the pockets 19, 20 can also be formed by folding back a sheet member constituting the exterior member 2 to the skin side and using the folded back portion as the cover sheet 17, 18 described above. For example, the outer sheet 6 constituting the exterior member 2 can be folded back to the skin side at the edge of the waist opening 3 of the exterior member 2, and a part of this folded back portion can be joined to the inner sheet 5 and / or the absorbent main body 7 to form the above-mentioned joined regions 17A, 18A, and the other part can be left unjoined to either the inner sheet 5 or the absorbent main body 7 to form the above-mentioned non-joined regions 17B, 18B. Alternatively, the inner sheet 5 constituting the exterior member 2 can be folded back to the skin side and a part of this folded back portion can be joined to the opposing inner sheet 5 and / or the absorbent main body 7 to form the above-mentioned joined regions 17A, 18A, and the other part can be left unjoined to either the opposing inner sheet 5 or the absorbent main body 7 to form the above-mentioned non-joined regions 17B, 18B. In the following, a case where the pockets 19, 20 are formed by the cover sheets 17, 18 will be described, but the following description also applies to a case where the pockets 19, 20 are formed by the sheet member that constitutes the exterior member 2 as described above.

[0053] The opening edges 19E, 20E of the pockets 19, 20 are preferably formed at positions overlapping the absorbent main body 7. 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 preferably formed so as to overlap the absorbent main body 7. By providing the pockets 19, 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19, 20. It is more preferable that the front pocket 19 is provided so as to extend forward from the position where it overlaps with the absorbent main body 7 beyond the front end of the absorbent main body 7. It is more preferable that the rear pocket 20 is provided so as to extend rearward from the position where it overlaps with the absorbent main body 7 beyond the rear end of the absorbent main body 7.

[0054] The opening edges 19E, 20E of the pockets 19, 20 are preferably formed at positions overlapping the absorbent core 10. By providing the pockets 19, 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the pockets 19, 20. In addition, when the front and rear ends of the inner pad 31 are inserted into the pockets 19, 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 less likely to accidentally come out of the pockets 19, 20. It is more preferable that the front pocket 19 is provided so as to extend forward from the position overlapping the absorbent core 10 beyond the front end of the absorbent main body 7. It is more preferable that the rear pocket 20 is provided so as to extend backward from the position overlapping the absorbent core 10 beyond the rear end of the absorbent main body 7.

[0055] The positions of the opening edges 19E, 20E of the pockets 19, 20 are determined when the disposable diaper 1 is fully unfolded after the front torso section P and the rear torso section Q of the outer cover 2 are untied at the side seals 13. For example, the disposable diaper 1 is unfolded in this manner, and the elastic members provided in the disposable diaper 1 are cut into small pieces so that the contractile force of the elastic members is not exerted. The disposable diaper 1 is then fully unfolded to determine each position. Each drawing shows a plan view, a cross-sectional view, etc. of the disposable diaper 1 in a fully unfolded state. In addition, various other positions and lengths in this specification are also determined in the same manner unless otherwise specified.

[0056] As shown in Fig. 2 and Fig. 4 to Fig. 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. The rear pocket 20 is provided with a plurality of pocket elastic members 22 aligned in the front-rear direction y along the opening edge 20E. Note that the plurality of pocket elastic members 21 and 22 may be provided only in either the front pocket 19 or the rear pocket 20, or may be provided in both. In addition, the pocket elastic members 21 and 22 may not be provided in one of the front pocket 19 and the rear pocket 20. Preferably, the plurality of pocket elastic members 21 and 22 are provided in both the front pocket 19 and the rear pocket 20. In this specification, the term "elastic members 21, 22 for the pockets" means the elastic member 21 for the pockets and / or the elastic member 22 for the pockets.

[0057] When a plurality of pocket elastic members 21 are provided in the front pocket 19, it is preferable that the plurality of pocket elastic members 21 including the first elastic member 21A, the second elastic member 21B, and the third elastic member 21C are provided in the front pocket 19 side by side in the front-rear direction y of the front pocket 19. It is preferable that 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 that the separation distance (second separation distance) between the second elastic member 21B and the third elastic member 21C is wider than the separation distance (first separation distance) between the first elastic member 21A and the second elastic member 21B.

[0058] When a plurality of pocket elastic members 22 are provided in the rear pocket 20, it is preferable that the plurality of pocket elastic members 22 including the first elastic member 22A, the second elastic member 22B, and the third elastic member 22C are provided in the rear pocket 20 side by side in the front-to-rear direction y of the rear pocket 20. It is preferable that 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 that the separation distance (second separation distance) between the second elastic member 22B and the third elastic member 22C is wider than the separation distance (first separation distance) between the first elastic member 22A and the second elastic member 22B.

[0059] If the pockets 19, 20 are provided with a plurality of pocket elastic members 21, 22 as described above, when the front and rear ends of the inner pad 31 are inserted into the pockets 19, 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, and the third elastic members 21C, 22C provided away from the second elastic members 21B, 22B so that the second separation distance is wider than the first separation distance suppresses distortion of the front and rear ends of the inner pad 31 in the pockets 19, 20, and the front and rear ends of the inner pad 31 can be stably held in the pockets 19, 20. This makes it easy to properly install the inner pad 31 on the skin-facing side of the disposable diaper 1.

[0060] The pocket elastic member 21 provided in the front pocket 19 has a separation distance (second separation distance) between the second elastic member 21B and the third elastic member 21C that is preferably 1.3 times or more, more preferably 1.5 times or more, even more preferably 1.8 times or more, and preferably 5.0 times or less, more preferably 4.0 times or less, and even more preferably 3.0 times or less, of the separation distance (first separation distance) between the first elastic member 21A and the second elastic member 21B. The pocket elastic member 22 provided in the back pocket 19 has a separation distance (second separation distance) between the second elastic member 22B and the third elastic member 22C that is preferably 1.3 times or more, more preferably 1.5 times or more, even more preferably 1.8 times or more, and preferably 5.0 times or less, more preferably 4.0 times or less, and even more preferably 3.0 times or less, of the separation distance (first separation distance) between the first elastic member 22A and the second elastic member 22B.

[0061] The pocket elastic members 21, 22 are preferably fixed to the pockets 19, 20 in a stretched state. The pocket elastic members 21, 22 are also preferably arranged so as to overlap the absorbent core 10. Specifically, of the pocket elastic members 21 provided in the front pocket 19, at least one elastic member is preferably arranged so as to overlap the absorbent core 10. Of the pocket elastic members 22 provided in the rear pocket 20, at least one elastic member is preferably arranged so as to overlap the absorbent core 10. By providing the pocket elastic members 21, 22 in this manner, when the front and rear ends of the inner pad 31 are inserted into the pockets 19, 20, the front and rear ends of the inner pad 31 are sandwiched between the absorbent core 10 and the pocket elastic members 21, 22, and are easily held stably 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 are arranged so as to overlap the absorbent core 10, and it is more preferable that the third elastic member 21C is also arranged so as to overlap the absorbent core 10. In the rear pocket 20, it is preferable that at least the first elastic member 22A and the second elastic member 22B are arranged so as to overlap the absorbent core 10, and it is more preferable that the third elastic member 22C is also arranged so as to overlap the absorbent core 10.

[0062] 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. That is, the pocket elastic members 21, 22 preferably extend outward in the width direction x from both ends of the pockets 19, 20. Here, the opening widths W1, W2 of the pockets 19, 20 refer to the length in the width direction x of the pockets 19, 20 in the vicinity of the opening edge where the pocket elastic members 21, 22 are provided, and the vicinity of the opening edge is preferably a portion along the opening edge 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, 22 in this manner, when the front and rear ends of the inner pad 31 are inserted into the pockets 19, 20, the front and rear ends of the inner pad 31 are pressed down by the pocket elastic members 21, 22 over the entire width direction x, making it difficult for the front and rear ends of the inner pad 31 to come out of the pockets 19, 20.

[0063] The opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 are preferably 70% or more of the width of the absorbent core 10, more preferably 80% or more, even more preferably 90% or more, and even more preferably wider than the width of the absorbent 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 even more preferably 150% or less. This makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19, 20, and also makes it easier to stably hold the inner pad 31 inserted in the pockets 19, 20. In addition, the width of the absorbent core 10 described here means the length in the width direction x of the absorbent core 10 at the position where it overlaps with the vicinity of the opening edge of the pockets 19, 20 when the vicinity of the opening edge of the pockets 19, 20 is located at a position where it overlaps with the absorbent core 10 (more specifically, the length in the width direction x of the absorbent core 10 at the position where the vicinity of the opening edge of the pockets 19, 20 overlaps with the absorbent core 10 in the front-to-back direction y); when the vicinity of the opening edge of the front pocket 19 is located forward of the front end of the absorbent core 10, it means the length in the width direction x of the front end of the absorbent core 10; and when the vicinity of the opening edge of the rear pocket 20 is located rearward of the rear end of the absorbent core 10, it means the length in the width direction x of the rear end of the absorbent core 10.

[0064] It is preferable that both ends of the pockets 19, 20 in the width direction x are joined to the exterior member 2 in the vicinity of the opening edge where the pocket elastic members 21, 22 are provided. In this case, it is preferable that the both ends of the pockets 19, 20 in the width direction x in the vicinity of the opening edge are not joined to the exterior member 2 and / or the absorbent main body 7. It is preferable that, with both ends of the pockets 19, 20 in the width direction x thus joined to the exterior member 2, when the pocket elastic members 21, 22 are in a contracted state, the absorbent core 10 extends outward in the width direction x beyond both ends of the pockets 19, 20 in the width direction x in the vicinity of the opening edge. In this case, in the expanded state of the pocket elastic members 21, 22, both ends of the vicinity of the opening edge of the pockets 19, 20 are located outward in the width direction x from both ends of the absorbent core 10 in the width direction x, whereas in the contracted state of the pocket elastic members 21, 22, both ends of the vicinity of the opening edge of the pockets 19, 20 are contracted in the width direction x, so that both ends of the vicinity of the opening edge of the pockets 19, 20 are located inward in the width direction x from both ends of the absorbent core 10 in the width direction x. Therefore, when the front and rear ends of the inner pad 31 are inserted into the pockets 19, 20, the front and rear ends of the inner pad 31 are suitably held down by the pocket elastic members 21, 22, so that the front and rear ends of the inner pad 31 are unlikely to accidentally come out of the pockets 19, 20. The contracted state of the pocket elastic members means, for example, a state in which the disposable diaper in the form of pants as shown in FIG. 1 is placed on a flat surface with no force being applied thereto, and the pocket elastic members are contracted. In addition, since the pocket elastic members are on the skin-facing side, the disposable diaper may be turned inside out and placed on a flat surface to observe the contracted state of the pocket elastic members.

[0065] In the above case, in the contracted state of the pocket elastic members 21, 22, the length between both ends in the width direction x of the opening edge vicinity of the pockets 19, 20 is preferably 50% to 95% of the width of the absorbent core 10 that overlaps with the opening edge vicinity of the pockets 21, 22 and extends outward in the width direction x from both ends in the width direction x of the opening edge vicinity. That is, in the contracted state of the pocket elastic members 21, 22, the length between both ends in the width direction x of the opening edge vicinity of the pockets 19, 20 is preferably 50% to 95% 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 of the absorbent core 10 that overlaps with the opening edge vicinity of the pockets 19, 20. The ratio is more preferably 60% or more, even more preferably 65% ​​or more, and is preferably 90% or less, and even more preferably 85% or less. This makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19, 20, and also makes it difficult for the front and rear ends of the inner pad 31 to inadvertently come out of the pockets 19, 20.

[0066] Of the pocket elastic members 21, 22, at least the first elastic members 21A, 22A and the second elastic members 21B, 22B are preferably arranged in an area of ​​1 / 4 or less of the opening edge 19E, 20E side of the pocket 19, 20 in the front-rear direction y, more preferably in an area of ​​1 / 6 or less, and even more preferably in an area of ​​1 / 8 or less. The first elastic members 21A, 22A are preferably arranged in an area of ​​5 mm or less from the opening edge 19E, 20E of the pocket 19, 20, more preferably in an area of ​​3 mm or less, and even more preferably in an area of ​​2 mm or less. This allows gathers to be suitably formed along the opening edge 19E, 20E of the pocket 19, 20, and the front and rear ends of the inner pad 31 are easily held firmly by the first elastic members 21A, 22A and the second elastic members 21B, 22B. The third elastic members 21C, 22C are preferably positioned over less than 1 / 2 of the area on the opening edge 19E, 20E side of the pockets 19, 20 in the front-to-back direction y, more preferably over less than 1 / 3 of the area, and even more preferably over less than 1 / 4 of the area.

[0067] The pockets 19, 20 may further be provided with a fourth elastic member as the pocket elastic member 21, 22. In this case, the fourth elastic member is provided at a position farther from the opening edge 19E, 20E than the third elastic members 21C, 22C. In the front pocket 19, the separation distance (third separation distance) between the third elastic member 21C and the fourth elastic member is not particularly limited, but is preferably wider than the separation distance (first separation distance) between the first elastic member 21A and the second elastic member 21B. In the rear pocket 20, the separation distance (third separation distance) between the third elastic member 22C and the fourth elastic member is not particularly limited, but is preferably wider than the separation distance (first separation distance) between the first elastic member 22A and the second elastic member 22B. This makes it easy to insert the front and rear ends of the inner pad 31 deep into the pockets 19, 20, and the front and rear ends of the inner pad 31 are less likely to be distorted in the pockets 19, 20, so that the front and rear ends of the inner pad 31 are stably held in the pockets 19, 20. The pockets 19, 20 may further be provided with a fifth elastic member as the pocket elastic members 21, 22, and in this case, the description of the fourth elastic member applies to the fifth elastic member. It is preferable that the pockets 19, 20 do not have any other elastic members between the opening edges 19E, 20E and the first elastic members 21A, 22A.

[0068] The pocket elastic members 21, 22 are preferably arranged, for example, only in a region of 1 / 2 or less on the opening edge 19E, 20E side of the pocket 19, 20 in the front-rear direction y. That is, when the pocket 19, 20 is divided into two equal parts in the depth direction (front-rear direction y), the pocket elastic members 21, 22 are arranged in a region of 1 / 2 on the opening edge 19E, 20E side of the pocket 19, 20, but it is preferable that the pocket elastic members 21, 22 are not arranged in a region of the back side 1 / 2 of the pocket 19, 20. This makes it easy to insert the front and rear ends of the inner pad 31 deep into the pocket 19, 20 when inserting the front and rear ends of the inner pad 31 into the pocket 19, 20. More preferably, the pocket elastic members 21, 22 are arranged only in a region of 1 / 3 or less on the opening edge 19E, 20E side of the pocket 19, 20 in the front-rear direction y.

[0069] When the pockets 19, 20 are formed from the cover sheets 17, 18, the pocket elastic members 21, 22 are preferably provided on the cover sheets 17, 18. Specifically, the pocket elastic member 21 of the front pocket 19 is preferably provided on the front cover sheet 17, and is preferably provided along the rear edge 17CE of the front cover sheet 17 so as to overlap with the non-bonded region 17B forming the front pocket 19. It is more preferable that the pocket elastic member 21 of the front pocket 19 is provided so as to overlap with the bonded regions 17A located on both sides of the non-bonded 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 is preferably provided along the front edge 18CE of the rear cover sheet 18 so as to overlap with the non-bonded region 18B forming the rear pocket 20. It is more preferable that the pocket elastic members 22 of the rear pocket 20 are provided so as to overlap with the bonded regions 18A located on both sides of the non-bonded region 18B that forms the rear pocket 20 in the width direction x.

[0070] The pocket elastic members 21, 22 may be disposed on the skin-facing side of the cover sheets 17, 18, or on the outer surface side of the cover sheets 17, 18. Alternatively, the cover sheets 17, 18 may be folded back at least once along a crease extending in the width direction x to form a fold-in portion along the opening edges 19E, 20E of the pockets 19, 20, and the pocket elastic members 21, 22 may be disposed between the folded back cover sheets 17, 18 at the fold-in portion. In this case, it is preferable that the crease of the cover sheets 17, 18 (when folded back along two or more creases, one or more of the creases) becomes the central side edges 17CE, 18CE of the cover sheets 17, 18 to form the opening edges 19E, 20E of the pockets 19, 20. The fold-in portion is defined as a portion where the cover sheets 17, 18 are folded back along a crease extending in the width direction x, resulting in a plurality of layers of the cover sheets 17, 18 being stacked.

[0071] In Fig. 4, the cover sheets 17, 18 are folded back once on the outer side along a crease extending in the width direction x (i.e., at the central side edges 17CE, 18CE of the cover sheets 17, 18), and a folded-back portion is formed on the inside of the pocket 19, 20 along the opening edges 19E, 20E of the pocket 19, 20, and the pocket elastic members 21, 22 are disposed between the cover sheets 17, 18 folded back on the outer side at the folded-back portion. By providing the pocket elastic members 21, 22 at the folded-back portion in this manner, the pocket elastic members 21, 22 can be stably installed in the pocket 19, 20. In addition, since the pocket elastic members 21, 22 do not directly contact the wearer's skin, the disposable diaper 1 can be made comfortable to wear, and the front and rear ends of the inner pad 31 can be easily inserted into the pocket 19, 20 without being caught by the pocket elastic members 21, 22. In addition, it is preferable that the folded-in portions are formed by folding the cover sheets 17, 18 once toward the outer surface, as shown in Figure 4. This prevents the folded-in portions from becoming excessively hard, making them soft against the wearer's skin, and allows the pocket elastic members 21, 22 to be stably positioned in the pockets 19, 20.

[0072] When a fold-in portion is formed in the front pocket 19, at least one of the pocket elastic members 21 provided in the front pocket 19 may be provided in the fold-in portion, but it is preferable that all of the elastic members be provided in the fold-in portion. When a fold-in 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 fold-in portion, but it is preferable that all of the elastic members be provided in the fold-in portion.

[0073] The folded-in portion is preferably formed so that its length in the front-rear direction y is 10% to 50% of the depth length D1, D2 of the pockets 19, 20. Specifically, the length in the front-rear direction y of the folded-in portion of the front pocket 19 is preferably 10% to 50% of the depth length D1 of the front pocket 19. Also, the length in the front-rear direction y of the folded-in portion of the rear pocket 20 is preferably 10% to 50% of the depth length D2 of the rear pocket 20. This 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-in portion is formed in this manner, it becomes easier to provide the pocket elastic members 20, 21 in the folded-in portion in the manufacturing process, and it is possible to prevent the amount of the cover sheets 17, 18 used to form the folded-in portion from increasing excessively. In addition, the depth length D1 of the front pocket 19 means the length in the front-to-back direction y from the opening edge 19E of the front pocket 19 to the joining area 17A at the front end 19H of the front pocket 19, and the depth length D2 of the rear pocket 20 means the length in the front-to-back direction y from the opening edge 20E of the rear pocket 20 to the joining area 18A at the rear end 20H of the rear pocket 20.

[0074] 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. This allows the position of the front end of the inner pad 31 in the width direction x to be accurately determined when the inner pad 31 is placed in the crotch portion R of the disposable diaper 1, and the inner pad 31 is unlikely to come into contact with the wearer's legs when the wearer moves his / her legs back and forth, making the wearer less likely to feel the inner pad 31 as a nuisance. As a result, the inner pad 31 is stably placed on the skin-facing side of the disposable diaper 1, and the inner pad 31 can suitably receive urine and the like excreted by the wearer, making it less likely that urine and the like will leak sideways. Furthermore, when an irregularly shaped inner pad 31 is used in which the rear side is wider than the front side, it becomes easier to insert the front and rear ends of the irregularly shaped inner pad 31 into the pockets 19, 20, and the front and rear ends of the irregularly shaped inner pad 31 can be stably maintained while inserted into the pockets 19, 20. In this case, the opening width W2 of the rear pocket 20 is preferably 1.1 times or more the opening width W1 of the front pocket 19, more preferably 1.2 times or more, and is preferably 2.0 times or less, more preferably 1.8 times or less, and even more preferably 1.6 times or less.

[0075] 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. This makes it easier for the front and rear ends of the inner pad 31 to be stably held when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20. 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. This makes it harder for the inner pad 31 to shift significantly in the front-rear direction y when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20 and the inner pad 31 is placed on the skin-facing side of the disposable diaper 1, and makes it harder for the inner pad 31 to come out of the pockets 19 and 20.

[0076] 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, taking into consideration the position of the urethral opening. In this case, the depth D2 of the rear pocket 20 is preferably 1.1 times or more, more preferably 1.2 times or more, and preferably 2.5 times or less, more preferably 2.0 times or less, and even more preferably 1.6 times or less than the depth D1 of the front pocket 19. On the other hand, when a man uses the disposable diaper 1 for incontinence, it is preferable that the depth D1 of the front pocket 19 is longer than the depth D2 of the rear pocket 20, taking into consideration the position of the urethral opening. In this case, the depth length D1 of the front pocket 19 is preferably 1.1 times or more the depth length D2 of the rear pocket 20, more preferably 1.2 times or more, and preferably 2.5 times or less, more preferably 2.0 times or less, and even more preferably 1.6 times or less.

[0077] The size of the front pocket 19 and the size of the rear pocket 20 may be the same or different. It is preferable that the absorbent core 10 is provided so as to overlap the pockets 19 and 20, but 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 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 ends of the inner pad 31 are inserted into the pockets 19 and 20, the rear end of the inner pad 31 is sandwiched between the absorbent core 10 and the wearer's skin and is easily held stably in the rear pocket 20. Therefore, even if the wearer turns his / her waist from side to side, the rear end of the inner pad 31 is less likely to come out of the rear pocket 20.

[0078] From the viewpoint of facilitating the 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 end of the absorbent core 10 is preferably thinner than the thickness of the central 1 / 3 portion of the absorbent core 10 in the front-rear direction y. The thickness of the absorbent core 10 can be measured by a thickness gauge, for example, a thickness gauge SM-130 manufactured by Techlock Corporation. Specifically, the thickness of the absorbent core 10 is measured by sandwiching it between an anvil and a measuring probe, and the thickness is measured so that the final pressure is 2.2 N or less with the thickness gauge SM-130. The anvil and measuring probe have a circular contact surface with the measurement target having 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 and measuring probe having a diameter of 10 mm is located 10 mm away from the front end or rear end of the absorbent core 10. The thickness of the central 1 / 3 of the absorbent core 10 in the front-to-back direction y is determined by measuring the thickness at three locations approximately equally spaced in the front-to-back direction y in the central 1 / 3 of the absorbent core 10 and calculating the average value. The thickness of the front end and / or rear end of the absorbent core 10 is preferably 90% or less, more preferably 80% or less, and preferably 20% or more, more preferably 30% or more of the thickness of the central 1 / 3 of the absorbent core 10 in the front-to-back direction y.

[0079] The front cover sheet 17 forming the front pocket 19 is provided at least on the front torso P, and may be provided from the front torso P to the crotch R. Therefore, the opening edge 19E of the front pocket 19 may be located in the front torso P or in the crotch R. The front cover sheet 17 may be provided on the entire front torso P, or on only a part of the front torso P. The front cover sheet 17 is preferably provided to be wider than the absorbent main body 7 in the width direction x, and is preferably formed to have approximately the same length in the width direction x as the front torso P of the exterior member 2.

[0080] The rear cover sheet 18 forming the rear pocket 20 is provided at least in the rear torso portion Q, and may be provided from the rear torso portion Q to the crotch portion R. Therefore, the opening edge 20E of the rear pocket 20 may be located in the rear torso portion Q or in the crotch portion R. The rear cover sheet 18 may be provided over the entire rear torso portion Q, or may be provided over only a portion of the rear torso portion Q. The rear cover sheet 18 is preferably provided to be wider than the absorbent main body 7 in the width direction x, and more preferably formed to have approximately the same length in the width direction x as the rear torso portion Q of the exterior member 2.

[0081] It is preferable that the front cover sheet 17 is provided so as to substantially coincide with the front body portion P of the exterior member 2 in the width direction x, and the rear cover sheet 18 is provided so as to substantially coincide with the rear body portion Q of the exterior member 2 in the width direction x, and the front cover sheet 17 and the rear cover sheet 18 are joined to each other at the side seal portion 13. This makes it difficult for the front cover sheet 17 and the rear cover sheet 18 to peel off from the exterior member 2, and the front pocket 19 and the rear pocket 20 are stably formed.

[0082] It is preferable that the cover sheets 17, 18 are not joined to the absorbent body 7. Therefore, it is preferable that the joining area 17A of the front cover sheet 17 is formed so as to join the front cover sheet 17 and the absorbent body 2, and it is preferable that the joining area 18A of the rear cover sheet 18 is formed so as to join the rear cover sheet 18 and the absorbent body 2. It is more preferable that the front cover sheet 17 covers the front end of the absorbent body 7 and is not joined to the absorbent body 7, and it is more preferable that the rear cover sheet 18 covers the rear end of the absorbent body 7 and is not joined to the absorbent body 7. This makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19, 20. In addition, when the rising flaps 11 are provided on both sides of the skin-facing side of the absorbent body 7 in the width direction x, the rising flaps 11 tend to rise up favorably.

[0083] The cover sheets 17, 18 may have non-bonded regions 17B, 18B formed in a portion including the central side edges 17CE, 18CE (for example, a region within 5 mm from the central side edges 17CE, 18CE) extending outward in the width direction x from both ends in the width direction x of the vicinity of the opening edge of the pockets 19, 20. In this case, the central side edges 17CE, 18CE of the cover sheets 17, 18 are not bonded to the exterior member 2 and the absorbent main body 7 not only at the opening edges 19E, 20E of the pockets 19, 20 but also in portions outward in the width direction x. If the non-bonded regions 17B, 18B are formed in the central side edges 17CE, 18CE of the cover sheets 17, 18 in this manner, it becomes easy to insert the front and rear ends of the inner pad 31 into the pockets 19, 20.

[0084] The cover sheets 17, 18 may be hydrophilic (liquid permeable) or hydrophobic (liquid impermeable), and may use sheet materials that can be used for the top sheet 8 and the back sheet 9. If the cover sheets 17, 18 are hydrophilic, urine, etc., even if excreted on the cover sheets 17, 18, can pass through the cover sheets 17, 18, and a wider area of ​​the inner pad 31 can contribute to absorbing urine, etc., 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.

[0085] The front cover sheet 17 and the rear cover sheet 18 may be, for example, hydrophilic in the front cover sheet 17 and hydrophobic in the rear cover sheet 18. In this case, when the inner pad 31 is placed on the skin-facing side of the disposable diaper 1 and worn, a wider range of the front portion of the inner pad 31 can be made to contribute to absorbing urine and the like. On the other hand, since the rear cover sheet 18 is hydrophobic, leakage of urine and the like from the back side when the wearer is in the supine position can be prevented, and urine and the like absorbed by the inner pad 31 can be prevented from seeping out through the rear cover sheet 18. This can improve the wearing comfort of the disposable diaper 1.

[0086] It is preferable that the front torso elastic members 15A provided on the front torso P of the exterior member 2 are not arranged so as to overlap the absorbent core 10. Alternatively, when a part of the front torso elastic members 15A is arranged so as to overlap the absorbent core 10, it is preferable that the front torso elastic members 15A are arranged intermittently at the part overlapping the absorbent core 10. By providing the front torso elastic members 15A on the front torso P of the exterior member 2 in this manner, the front end of the absorbent core 10 is less likely to be distorted by the front torso elastic members 15A, and the front end of the inner pad 31 is easily inserted into the front pocket 19. In addition, the front end of the inner pad 31 is easily held stably in the state inserted into the front pocket 19. Note that "the front torso elastic members 15A are not arranged so as to overlap the absorbent core 10" means that all of the plurality of front torso elastic members 15A are not arranged so as to overlap the absorbent core 10.

[0087] It is preferable that the rear torso elastic members 15B provided on the rear torso section Q of the exterior member 2 are not arranged so as to overlap the absorbent core 10. Alternatively, when a part of the rear torso elastic members 15B is arranged so as to overlap the absorbent core 10, it is preferable that the rear torso elastic members 15B are arranged intermittently at the part overlapping the absorbent core 10. By providing the rear torso elastic members 15B on the rear torso section Q of the exterior member 2 in this manner, the rear end of the absorbent core 10 is less likely to be distorted by the rear torso elastic members 15B, and the rear end of the inner pad 31 is easily inserted into the rear pocket 20. In addition, the rear end of the inner pad 31 is easily held stably in a state inserted in the rear pocket 20. Note that "the rear torso elastic members 15B are not arranged so as to overlap the absorbent core 10" means that all of the multiple rear torso elastic members 15B are not arranged so as to overlap the absorbent core 10.

[0088] As shown in Fig. 5, the front end 19H of the front pocket 19, i.e., the rear end of the front pocket 19, is located forward of the front end 7E1 of the absorbent main body 7, and it is preferable that at least a part of the front torso elastic member 15A is disposed between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent main body 7. If the front torso elastic member 15A is provided in this manner, 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 pressed against the wearer's skin by the front torso elastic member 15A, and the front end of the inner pad 31 is easily held stably in the front pocket 19. Note that the front torso 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 preferably provided continuously between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent main body 7.

[0089] As shown in Fig. 6, the rear end 20H of the rear pocket 20, i.e., the innermost end of the rear pocket 20, is located rearward of the rear end 7E2 of the absorbent main body 7, and it is preferable that at least a part of the rear torso elastic member 15B is disposed between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent main body 7. If the rear torso elastic member 15B is disposed in this manner, 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 pressed against the wearer's skin by the rear torso elastic member 15B, and the rear end of the inner pad 31 is easily held stably in the rear pocket 20. It is preferable that the rear torso elastic member 15B disposed between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent main body 7 is disposed continuously between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent main body 7.

[0090] The present invention also provides a combination of an absorbent article having the disposable diaper of the present invention described above and an inner pad arranged on the skin-facing side of the disposable diaper. The inner pad is arranged on the top sheet of the disposable diaper of the present invention. According to the combination of the absorbent article of the present invention, the front and rear ends of the inner pad can be inserted into the pocket of the disposable diaper, so that the inner pad can be stably arranged on the skin-facing side of the disposable diaper. This will be described with reference to FIG. 8. In FIG. 8, for the sake of convenience, the flaps 11 rising on both sides of the skin-facing side of the absorbent main body 7 of the disposable diaper 1 in the width direction x are omitted in order to show the arrangement of the front and rear ends of the inner pad 31 in the pocket 20. When the front and rear ends of the inner pad 31 are arranged in the pocket 20, the inner pad 31 is arranged between the rising flaps 11 of the absorbent main body 7 in the width direction x, so that the inner pad 31 is easily held stably not only in the front and rear direction y but also in the width direction x.

[0091] The inner pad 31 preferably has a top sheet, a back sheet, and an absorbent core 32 disposed therebetween. The top sheet of the inner pad 31 is preferably liquid permeable and may be made of a material usable for the top sheet 8 of the disposable diaper 1 described above. The back sheet of the inner pad 31 may be liquid permeable or liquid impermeable and may be made of a material usable for the top sheet 8 or the back sheet 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 above may be referred to. The inner pad 31 may be provided with rising flaps on both sides of the skin-facing side in the width direction x, and for the rising flaps of the inner pad 31, the description of the rising flaps 11 of the disposable diaper 1 above may be referred to. The shape of the inner pad 31 may be a substantially rectangular shape, an hourglass shape, a shuttlecock shape, or the like.

[0092] 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, the width of the front and rear ends of the absorbent core 32 of the inner pad 31 is preferably wider than the width of the front and rear ends of the absorbent core 10 of the disposable diaper 1. This makes it easier to stably install the inner pad 31 on the skin-facing 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.

[0093] The length in the front-rear direction y of the absorbent core 32 of the inner pad 31 is preferably longer than the length in the front-rear direction y from the opening edge 19E of the front pocket 19 to the opening edge 20E of the rear pocket 20 of the disposable diaper 1. This allows the inner pad 31 to be stably placed on the skin-facing 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 in the front-rear direction y of the absorbent core 32 of the inner pad 31 is preferably 20 mm or more longer, more preferably 40 mm or more longer, and preferably 200 mm or less longer, more preferably 160 mm or less longer, than the length in the front-rear direction y from the opening edge 19E of the front pocket 19 to the opening edge 20E of the rear pocket 20 of the disposable diaper 1. [Explanation of symbols]

[0094] 1: Disposable diapers 2: Exterior materials 3: Waist opening 4: Leg opening 5: Inner sheet 6: Outer sheet 7: Absorbent body 8: Top sheet 9: Back seat 10: Absorbent core 11: Rise flap 12: Elastic member for standing up 13: Side seal part 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 body elastic member 16: Waist elastic member 17: Front cover sheet, 17A: Bonded area, 17B: Non-bonded area, 17CE: Central or posterior edge, 17OE: Outer edge 18: rear 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: Front pocket elastic member, 21A: First elastic member, 21B: Second elastic member, 21C: Third elastic member 22: Rear pocket elastic member, 22A: First elastic member, 22B: Second elastic member, 22C: Third elastic member 31: Inner pad 32: Absorbent core (of inner pad) P: Front torso Q: Rear torso R: Crotch

Claims

1. A disposable diaper having a front waist portion, a rear waist portion, and a crotch portion located therebetween, the disposable diaper being formed in a pants shape, At least the crotch portion is provided with an absorbent 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, the exterior member is disposed at least on the front body portion and the rear body portion, and the front body portion and the rear body portion of the exterior member are joined to each other at both sides in the width direction, A pocket is provided on the skin side of the front torso section and / or the skin side of the rear torso section, the pocket opening toward the center in the front-rear direction of the disposable diaper, The pocket has a plurality of pocket elastic members, including a first elastic member, a second elastic member and a third elastic member, arranged in a front-rear direction of the pocket along an opening edge of the pocket, the first elastic member, the second elastic member, and the third elastic member are arranged in this order from an opening edge side of the pocket, and a separation distance between the second elastic member and the third elastic member is wider than a separation distance between the first elastic member and the second elastic member; The pocket has both ends in a width direction joined to the exterior member in a vicinity of an opening edge where the pocket elastic member is provided, The opening edge of the pocket is formed at a position overlapping the absorbent core, and the opening width of the pocket is wider than the width of the absorbent core, A disposable diaper, characterized in that, when the pocket elastic members are in a contracted state, the absorbent core extends widthwise outward beyond both widthwise ends of the pocket in the vicinity of the opening edge.

2. A disposable diaper having a front waist portion, a rear waist portion, and a crotch portion located therebetween, the disposable diaper being formed in a pants shape, At least the crotch portion is provided with an absorbent 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, the exterior member is disposed at least on the front body portion and the rear body portion, and the front body portion and the rear body portion of the exterior member are joined to each other at both sides in the width direction, A pocket is provided on the skin side of the front torso portion and / or the skin side of the rear torso portion, the pocket opening toward the center in the front-rear direction of the disposable diaper, The pocket has a plurality of pocket elastic members, including a first elastic member, a second elastic member and a third elastic member, arranged in a front-rear direction of the pocket along an opening edge of the pocket, the first elastic member, the second elastic member, and the third elastic member are arranged in this order from an opening edge side of the pocket, and a separation distance between the second elastic member and the third elastic member is wider than a separation distance between the first elastic member and the second elastic member; A disposable diaper characterized by satisfying the following requirement A and / or requirement B. (Requirement A) A front pocket is provided as the pocket on the skin side of the front torso portion, A front body portion of the exterior member is provided with a plurality of front body portion elastic members extending in the width direction and aligned in the front-rear direction, The front end of the front pocket is located further forward than the front end of the absorbent body, and at least a portion of the front torso elastic member is disposed between the front end of the front pocket and the front end of the absorbent body. (Requirement B) A rear pocket is provided as the pocket on the skin side of the rear torso portion, A rear body portion of the exterior member is provided with a plurality of rear body portion elastic members extending in a width direction and aligned in a front-rear direction, The rear end of the rear pocket is located rearward of the rear end of the absorbent body, and at least a portion of the rear torso elastic member is disposed between the rear end of the rear pocket and the rear end of the absorbent body.

3. The disposable diaper according to claim 2 , wherein an edge of the opening of the pocket is formed at a position overlapping the absorbent core.

4. The pocket has both ends in a width direction joined to the exterior member in a vicinity of an opening edge where the pocket elastic member is provided, 4. The disposable diaper according to claim 3, wherein, when said pocket elastic members are in a contracted state, said absorbent core extends widthwise outward beyond both widthwise ends of said pocket in the vicinity of said opening edge.

5. 5. A disposable diaper as described in claim 1 or 4. In a contracted state of the pocket elastic member, the length between both ends in the width direction of the opening edge vicinity of the pocket overlaps with the opening edge vicinity of the pocket and is 50% or more and 95% or less of the width of the absorbent core that extends widthwise outward beyond both ends of the opening edge vicinity.

6. The disposable diaper according to any one of claims 1 to 5, wherein at least the first elastic member and the second elastic member are provided in an area of ​​not more than ¼ of an opening edge side in a front-rear direction of the pocket.

7. A front pocket is provided as the pocket on the skin side of the front torso portion, The disposable diaper according to any one of claims 1 to 6, wherein a rear pocket is provided as the pocket on the skin-facing side of the rear torso portion.

8. The disposable diaper according to claim 7, wherein the depth of the rear pocket is greater than the depth of the front pocket.

9. The disposable diaper according to claim 7, wherein the depth of the front pocket is greater than the depth of the rear pocket.

10. A front pocket is provided as the pocket on the skin side of the front torso portion, The thickness of the front end portion of the absorbent core is thinner than the thickness of the central 1 / 3 portion of the absorbent core in the front-rear direction, and / or A rear pocket is provided as the pocket on the skin side of the rear torso portion, 10. The disposable diaper according to claim 1, wherein the thickness of the rear end portion of the absorbent core is thinner than the thickness of a central ⅓ portion of the absorbent core in the front-to-rear direction.

11. A cover sheet is provided on the skin surface side of the front body part and / or the skin surface side of the rear body part of the exterior member, The cover sheet has a central side edge on a central side in a front-to-rear direction of the disposable diaper and an outer side edge on an outer side in a front-to-rear direction of the disposable diaper, the cover sheet has a joined region joined to the exterior member and / or the absorbent body, and a non-jointed region not joined to either the exterior member or the absorbent body, and the non-jointed region extends from a central side edge in the front-to-rear direction of the cover sheet outward in the front-to-rear direction of the disposable diaper, thereby forming 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 10, wherein the pocket elastic members are provided on the cover sheet.

12. the cover sheet is folded back at least once toward the outer surface side along a crease extending in the width direction, and a fold-in portion is formed on the inner side of the pocket along an opening edge of the pocket; The disposable diaper according to claim 11, wherein the pocket elastic members are disposed between the cover sheets folded back toward the outer surface side in the folded-in portions.

13. The disposable diaper according to claim 12, wherein the length of the folded-in portion in the front-rear direction is 10% to 50% of the depth of the pocket.

14. The disposable diaper according to any one of claims 11 to 13, wherein the cover sheet is hydrophilic.

15. A combination of an absorbent article comprising the disposable diaper according to any one of claims 1 to 14 and an inner pad disposed on the top sheet.

16. The absorbent article combination 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 opening of the pocket.

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