Disposable diapers

Abstract

To provide a disposable diaper allowing a user to stably install a urine pad to be used supplementarily.SOLUTION: A disposable diaper 1 comprising an anterior trunk part P, a posterior trunk part Q and a crotch part R 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 P and the posterior trunk part Q. The anterior trunk part P and the posterior trunk part Q respectively include, in skin surface sides thereof, a front pocket 19 and a rear pocket 20 opened to a center side in the longitudinal direction, The length L2 from a center position C1 in the longitudinal direction of the disposable diaper 1 to an opening edge 20E of the rear pocket 20 is shorter than the length from the position C1 to an opening edge 19E of the front pocket 19. The length L3 from a narrowest position C2 of the crotch part R of the disposable diaper 1 to the opening edge 19E of the front pocket 19 is shorter than the length L4 from the position C2 to the opening edge 20E of the rear pocket 20.SELECTED DRAWING: Figure 2

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 that are suitable for use with supplementary urine pads have been known that have pockets or the like on the skin side of the diaper, but when using supplementary urine pads, it is desirable that the supplementary urine pad can be stably placed on the skin side of the disposable diaper. The present invention has been made in view of the above circumstances, and its object is to provide a disposable diaper that allows a supplementary urine pad to be stably placed on the skin side of the disposable diaper. [Means for solving the problem]

[0006] The disposable diaper of the present invention which is able to solve the above-mentioned problems is formed in a pants shape and has a front torso portion, a rear torso portion and a crotch portion located therebetween, and at least the crotch portion is provided with an absorbent main body having a top sheet, a back sheet and an absorbent core arranged therebetween, and an exterior member is provided on the outer surface side of the absorbent main body, and the exterior member is arranged at least on the front torso portion and the rear torso portion, and the front torso portion and the rear torso portion of the exterior member are joined to each other at side seal portions on both sides in the width direction, and a front pocket opening to the center in the fore-aft direction is provided on the skin-facing side of the front torso portion, and a rear pocket opening to the center in the fore-aft direction is provided on the skin-facing side of the rear torso portion, and the front pocket and the rear pocket are arranged so as to satisfy the following requirements (A) and (B). (Requirement A) When the side seal portions of the front and rear torso portions of the outer casing are released and the disposable diaper is laid out flat, the length from the center of the disposable diaper in the front-to-back direction to the edge of the opening of the rear pocket is shorter than the length from the center of the disposable diaper in the front-to-back direction to the edge of the opening of the front pocket. (Requirement B) When the side seal portions of the front and rear torso portions of the outer casing are released and the disposable diaper is laid out flat, the length from the narrowest point of the crotch portion of the disposable diaper to the opening edge of the front pocket is shorter than the length from the narrowest point of the crotch portion of the disposable diaper to the opening edge of the rear pocket.

[0007] The disposable diaper of the present invention is provided with the front pocket and the rear pocket as described above, so that when the inner pad, which is a supplementary urine pad, is inserted into the front pocket and the rear pocket and worn, the inner pad can be stably held on the skin-facing side of the disposable diaper. When wearing a pants-type disposable diaper, the rear part is more likely to be compressed than the front part. For example, when the wearer is in a sitting or supine position, the rear part of the disposable diaper is likely to be strongly compressed. Therefore, when the inner pad is placed on the skin-facing side of the disposable diaper and the wearer moves his or her buttocks from side to side while sitting or supine, the rear part of the disposable diaper is likely to be misaligned with the inner pad, and as a result, the rear end of the inner pad is likely to slip out of the rear pocket. However, by satisfying the above requirement (A), the opening edge of the rear pocket is located closer to the center of the disposable diaper in the front-to-rear direction, so that the rear end of the inner pad is less likely to slip out of the rear pocket. On the other hand, when the inner pad is placed on the skin-facing side of the disposable diaper and worn, and the wearer moves his / her legs back and forth in this state, the inner pad swings left and right in the front part of the crotch area due to the movement of the wearer's legs, and there is a concern that the front end of the inner pad may easily slip out of the front pocket. However, by satisfying the above requirement (B), the length of the part of the inner pad that swings left and right due to the movement of the wearer's legs can be shortened, and the front end of the inner pad is less likely to slip out of the front pocket. Therefore, according to the disposable diaper of the present invention, the inner pad can be stably held in the state where it is inserted in the front pocket and the rear pocket.

[0008] The front pocket is preferably formed by providing a front coversheet on the skin-facing side of the front torso part of the exterior member, and the rear pocket is preferably formed by providing a rear coversheet on the skin-facing side of the rear torso part of the exterior member. Specifically, it is preferable that a front coversheet is provided on the skin-facing side of the front torso part of the exterior member, the front coversheet has a bonding area bonded to at least a part of 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, and the non-bonded area extends forward from the rear edge of the front coversheet to form the front pocket with the rear edge of the front coversheet as an opening edge, and / or a rear coversheet is provided on the skin-facing side of the rear torso part of the exterior member, the rear coversheet has a bonding area bonded to at least a part of 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, and the non-bonded area extends rearward from the front edge of the rear coversheet to form the rear pocket with the front edge of the rear coversheet as an opening edge. By providing the front cover sheet and the rear cover sheet in this manner, the front pocket and the rear pocket can be easily formed, and the amount of sheet material used to form the front pocket and the rear pocket can be reduced.

[0009] The opening edge of the front pocket and / or the opening edge of the rear pocket are preferably formed at a position overlapping the absorbent core. By providing the front pocket and the rear pocket in this manner, the front and rear ends of the inner pad can be easily inserted into the front pocket and the rear pocket. In addition, when the front and rear ends of the inner pad are inserted into the front pocket and the rear pocket, the front and rear ends of the inner pad are supported by the absorbent core, so that the front and rear ends of the inner pad are less likely to accidentally come out of the front pocket and the rear pocket.

[0010] It is preferable that the opening width of the front pocket is wider than the width of the absorbent core at the position overlapping with the opening edge of the front pocket, and / or the opening width of the rear pocket is wider than the width of the absorbent core at the position overlapping with the opening edge of the front pocket. By providing the front pocket and the rear pocket in this manner, it becomes easier to insert the front and rear ends of the inner pad into the front pocket and the rear pocket, and the front and rear ends of the inner pad are less likely to accidentally fall out of the front pocket and the rear pocket.

[0011] It is preferable that the depth of the rear pocket is greater than the depth of the front pocket, so that the rear end of the inner pad is less likely to accidentally come out of the rear pocket.

[0012] The opening edge of the rear pocket is preferably located in the crotch area, so that when the disposable diaper is worn with the inner pad placed on the skin-facing side, the inner pad can be easily and stably held in the rear pocket.

[0013] It is preferable that the front pocket has a front pocket elastic member provided along the opening edge of the front pocket, and / or the rear pocket has a rear pocket elastic member provided along the opening edge of the rear pocket. With this, when the front and rear ends of the inner pad are inserted into the front pocket and / or the rear pocket, the front and rear ends of the inner pad are held down by the front pocket elastic member and / or the rear pocket elastic member. Therefore, when the inner pad is placed on the skin-facing side of the disposable diaper and worn, the front and rear ends of the inner pad are less likely to come out of the front pocket and / or the rear pocket, and the inner pad is stably placed on the skin-facing side of the disposable diaper.

[0014] It is preferable that a plurality of front pocket elastic members are provided along the opening edge of the front pocket, and / or a plurality of rear pocket elastic members are provided along the opening edge of the rear pocket. If a plurality of front pocket elastic members and / or rear pocket elastic members are provided in this manner, the front and rear ends of the inner pad are pressed flatly by the plurality of front pocket elastic members and / or the plurality of rear pocket elastic members, and the front and rear ends of the inner pad are more stably held within the front pocket and the rear pocket.

[0015] It is preferable that the front pocket has a first elastic member for the front pocket, a second elastic member for the front pocket, and a third elastic member for the front pocket, which are provided from the opening edge of the front pocket, and the separation distance (second separation distance) between the second elastic member for the front pocket and the third elastic member for the front pocket is wider than the separation distance (first separation distance) between the first elastic member for the front pocket and the second elastic member for the front pocket, and / or that the rear pocket has a first elastic member for the rear pocket, a second elastic member for the rear pocket, and a third elastic member for the rear pocket, which are provided from the opening edge of the rear pocket, and the separation distance (second separation distance) between the second elastic member for the rear pocket and the third elastic member for the rear pocket is wider than the separation distance (first separation distance) between the first elastic member for the rear pocket and the second elastic member for the rear pocket. If elastic members for the front pocket and / or elastic members for the rear pocket are provided in this manner, when the front and rear ends of the inner pad are inserted into the front pocket and / or rear pocket, the front and rear ends of the inner pad are firmly held by the first elastic member for the front or rear pocket near the opening edge of the front or rear pocket and the second elastic member for the front or rear pocket, and the third elastic member for the front or rear pocket, which is provided away from the opening edge of the front or rear pocket, prevents the front and rear ends of the inner pad from being distorted within the front pocket and / or rear pocket, and the front and rear ends of the inner pad can be stably held within the front pocket and / or rear pocket.

[0016] It is preferred that the front torso section of the exterior member has a plurality of widthwise extending front torso elastic members arranged side by side in the front-rear direction, the front torso elastic members not overlapping the absorbent core, or when a portion of the front torso elastic members overlaps the absorbent core, the front torso elastic members are arranged intermittently at the portion overlapping the absorbent core, and / or the rear torso section of the exterior member has a plurality of widthwise extending rear torso elastic members arranged side by side in the front-rear direction, the rear torso elastic members not overlapping the absorbent core, or when a portion of the rear torso elastic members overlaps the absorbent core, the rear torso elastic members are arranged intermittently at the portion overlapping the absorbent core. If the exterior member has the front torso elastic members and / or the rear torso elastic members in this way, the front and rear ends of the absorbent core are less likely to be distorted by the front torso elastic members and / or the rear torso elastic members, and the front and rear ends of the inner pad can be easily inserted into the front pocket and / or the rear pocket. In addition, the front and rear ends of the inner pad are more likely to be stably held in a state where they are inserted into the front pocket and / or the rear pocket.

[0017] It is preferable that the front torso portion of the outer casing 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 portion of the front torso elastic members is disposed between the front end of the front pocket and the front end of the absorbent main body, and / or the rear torso portion of the outer casing 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 portion of the rear torso elastic members is disposed between the rear end of the rear pocket and the rear end of the absorbent main body. If the outer member is thus provided with a front torso elastic member and / or a rear torso elastic member, when the front and rear ends of the inner pad are inserted into the front pocket and the rear 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 front pocket and / or the rear pocket.

[0018] 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 placed on the skin-facing side of the disposable diaper. With this combination of absorbent articles, the inner pad can be stably placed on the skin-facing side of the disposable diaper by inserting the front and rear ends of the inner pad into the front and rear pockets of the disposable diaper.

[0019] 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 widths of the front pocket and the rear pocket, which makes it easier to insert the front and rear ends of the inner pad into the front pocket and the rear pocket, and also makes it easier to stably place the inner pad on the skin-facing side of the disposable diaper. Effect of the Invention

[0020] The disposable diaper of the present invention can stably hold the inner pad on the skin-facing side of the disposable diaper when the auxiliary inner pad is inserted into the front and rear pockets provided on the skin-facing side of the disposable diaper and worn. [Brief description of the drawings]

[0021] [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] In the plan view of the disposable diaper shown in FIG. 2, an example of the formation of joining areas of the front cover sheet and the rear cover sheet to the exterior member is shown. [Figure 6] 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. [Figure 7] FIG. 2 shows another example of the disposable diaper of the present invention, and is a plan view of the disposable diaper when the front and rear torso sections are untied and laid out, as viewed from the skin-facing side. [Figure 8] 3 is a partial plan view of the disposable diaper shown in FIG. 2 from the front torso portion to the crotch portion. [Figure 9] 3 is a partial plan view of the disposable diaper shown in FIG. 2 from a rear waist portion to a crotch portion. [Figure 10] FIG. 2 shows another example of the disposable diaper of the present invention, and is a plan view of the disposable diaper when the front and rear torso sections are untied and laid out, as viewed from the skin-facing side. [Figure 11] 11 shows a cross-sectional view taken along line XI-XI of the disposable diaper shown in FIG. 10. [Figure 12] FIG. 10 is a plan view of a disposable diaper, showing an example of the formation of joining areas of the front cover sheet and the rear cover sheet to the exterior member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] 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 4 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 III-III cross-sectional view of the disposable diaper shown in Fig. 2, and Fig. 4 shows a IV-IV cross-sectional view of the disposable diaper shown in Fig. 2. Note that Figs. 2, 5 to 10, and 12 show plan views of the disposable diaper 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, and the arrow x in each figure indicates the width direction of the disposable diaper, the arrow y indicates the front-rear direction of the disposable diaper, and the direction perpendicular to the plane formed by the arrows x and y indicates the thickness direction z of the disposable diaper.

[0023] 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, and is formed into a pants-like shape having a waist opening 3 and a pair of leg openings 4. 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 together at side seal portions 13 on both sides in the width direction x, thereby forming a pants-like shape having the waist opening 3 and the pair of leg openings 4.

[0024] 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 the up-down direction of the disposable diaper 1 when the disposable diaper 1 is formed into a pants-like shape, for example, as shown in FIG. 1, and the width direction x corresponds to the left-right direction perpendicular to the front-rear direction y. The disposable diaper 1 also has a skin side and an outer side with respect to the thickness direction z shown in FIG. 3, FIG. 4, and FIG. 11. 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] As shown in Fig. 2 and Fig. 4, the disposable diaper 1 is provided with a front pocket 19 opening toward the center in the front-rear direction y on the skin-facing side of the front torso part P, and a rear pocket 20 opening toward the center in the front-rear direction y on the skin-facing side of the rear torso part Q. By providing the front pocket 19 and the rear pocket 20 in this manner, the disposable diaper 1 can stably arrange a supplementary urine pad (hereinafter referred to as an "inner pad") on the skin-facing side of the disposable diaper 1. Fig. 6 shows an example in which the inner pad 31 is arranged on the skin-facing side of the disposable diaper 1 shown in Fig. 2, but the inner pad 31 can be stably arranged on the skin-facing side of the disposable diaper 1 by inserting the front and rear ends of the inner pad 31 into the front pocket 19 and the rear pocket 20. The center in the front-rear direction y where the front pocket 19 and the rear pocket 20 open means the center C1 side of the disposable diaper 1 in the front-rear direction y.

[0044] The front pocket 19 can be formed by providing a front cover sheet 17 on the skin-facing side of the front torso portion P of the outer cover 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 portion Q of the outer cover member 2. This will be described with reference to Fig. 5. Fig. 5 shows an example of the formation of the joining regions where the front cover sheet 17 and the rear cover sheet 18 are joined to the outer cover member 2 for the disposable diaper 1 shown in Fig. 2. In Fig. 5, the joining regions of the front cover sheet 17 and the rear cover sheet 18 to the outer cover member 2 are shown by cross-hatching, and the outer edges of the front pocket 19 and the rear pocket 20 are shown by two-dot chain lines. For ease of understanding, the leg elastic members, the torso elastic members, and the waist elastic members are omitted.

[0045] A front cover sheet 17 is provided on the skin-facing side of the front torso part P of the exterior member 2, and the front cover sheet 17 has a joined region 17A joined to the exterior member 2 and a non-jointed region 17B not joined to either the exterior member 2 or the absorbent main body 7, and the non-jointed region 17B extends forward from the rear edge 17E of the front cover sheet 17 to form a front pocket 19 with the rear edge 17E of the front cover sheet 17 as an opening edge 19E. A rear cover sheet 18 is provided on the skin-facing side of the rear torso part Q of the exterior member 2, and the rear cover sheet 18 has a joined 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 main body 7, and the non-jointed region 18B extends rearward from the front edge 18E of the rear cover sheet 18 to form a rear pocket 20 with the front edge 18E of the rear cover sheet 18 as an opening edge 20E. By providing the front cover sheet 17 and the rear cover sheet 18 in this manner, the front pocket 19 and the rear pocket 20 can be easily formed. In addition, the amount of sheet material used to form the front pocket 19 and the rear pocket 20 can be reduced. Although not shown in the drawings, the joining area 17A of the front cover sheet 17 may be formed so as to join at least a part of the absorbent main body 7 together with the exterior member 2 or instead of the exterior member 2, and the joining area 18A of the rear cover sheet 18 may be formed so as to join at least a part of the absorbent main body 7 together with the exterior member 2 or instead of the exterior member 2. Hereinafter, in this specification, the front pocket 19 and the rear pocket 20 may be collectively referred to as "pockets 19, 20", and the front cover sheet 17 and the rear cover sheet 18 may be collectively referred to as "cover sheets 17, 18".

[0046] In the joining region 17A of the front cover sheet 17 and the joining region 18A of the rear cover sheet 18, the means for joining the cover sheets 17, 18 to the exterior member 2 and / or the absorbent main 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 main body 7 by an adhesive.

[0047] The front pocket 19 is formed by extending the non-bonded region 17B of the front cover sheet 17 forward from the rear edge 17E 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, and the length of the part in the width direction x becomes the opening width W1 of the front pocket 19. The bonded region 17A exists at the front end of the front pocket 19, and the length in the front-rear direction y from the opening edge 19E of the front pocket 19 to the bonded region 17A that corresponds to the front end 19H of the front pocket 19 becomes the depth length D1 of the front pocket 19. The non-bonded area 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 17E of the front cover sheet 17 toward the front, or may be formed to vary in width.

[0048] The rear pocket 20 is formed by extending the non-bonded region 18B of the rear cover sheet 18 rearward from the front edge 18E 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, and the length of the part in the width direction x becomes the opening width W2 of the rear pocket 20. The bonded region 18A exists at the rear end of the rear pocket 20, and the length in the front-rear direction y from the opening edge 20E to the bonded region 18A that corresponds to the rear end 20H of the rear pocket 20 becomes the depth length D2 of the rear pocket 20. The non-bonded area 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 18E of the rear cover sheet 18 toward the rear, or may be formed with a variable width.

[0049] 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.

[0050] The front pocket 19 and the rear pocket 20 are provided so as to satisfy the following requirements (A) and (B). (Requirement A) When the bond between the front and rear torso portions P and Q of the outer casing 2 is released at the side seal portions 13 and the disposable diaper 1 is laid out flat, the length L2 from the center position C1 of the disposable diaper 1 in the front-to-back direction y to the opening edge 20E of the rear pocket 20 is shorter than the length L1 from the center position C1 of the disposable diaper 1 in the front-to-back direction y to the opening edge 19E of the front pocket 19. (Requirement B) When the joint between the front torso portion P and the rear torso portion Q of the outer casing 2 is released at the side seal portion 13 and the disposable diaper 1 is spread out flat, the length L3 from the narrowest position C2 of the crotch portion R of the disposable diaper 1 to the opening edge 19E of the front pocket 19 is shorter than the length L4 from the narrowest position C2 of the crotch portion R of the disposable diaper 1 to the opening edge 20E of the rear pocket 20.

[0051] As described above, the disposable diaper 1 is provided with the front pocket 19 and the rear pocket 20, so that when the inner pad 31 is inserted into the front pocket 19 and the rear pocket 20 and worn, the inner pad 31 can be stably held in the inserted state in the front pocket 19 and the rear pocket 20. This will be described in detail below.

[0052] When the pants-type disposable diaper 1 is worn, the rear portion is more likely to be compressed than the front portion, and for example, when the wearer is in a sitting or supine position, the rear portion of the disposable diaper 1 is likely to be strongly compressed. Therefore, when the inner pad 31 is placed on the skin-facing side of the disposable diaper 1 and the wearer moves the buttocks from side to side while sitting or supine, a shift is likely to occur between the inner pad 31 and the disposable diaper 1 at the rear portion of the disposable diaper 1, and as a result, the rear end of the inner pad 31 is likely to slip out of the rear pocket 20. However, as in the above requirement (A), if the length L2 from the center position C1 in the front-rear direction y of the disposable diaper 1 to the opening edge 20E of the rear pocket 20 is shorter than the length L1 from the center position C1 in the front-rear direction y of the disposable diaper 1 to the opening edge 19E of the front pocket 19, the opening edge 20 of the rear pocket 20 will be located closer to the center in the front-rear direction y of the disposable diaper 1, making it difficult for the rear end of the inner pad 31 to slip out of the rear pocket 20. Also, when the wearer bends forward while standing, even if the rear part of the disposable diaper 1 is pulled upward, the rear end of the inner pad 31 will not easily slip out of the rear pocket 20. Therefore, the inner pad 31 can be stably held in the state inserted in the rear pocket 20.

[0053] On the other hand, when the inner pad 31 is placed on the skin-facing side of the disposable diaper 1 and worn, and the wearer moves his / her legs back and forth in this state, the inner pad 31 swings left and right in the front part of the crotch part R due to the movement of the wearer's legs, and there is a concern that the front end of the inner pad 31 may easily slip out of the front pocket 19. However, as in the above requirement (B), if the length L3 from the narrowest position C2 of the crotch part R of the disposable diaper 1 to the opening edge 19E of the front pocket 19 is shorter than the length L4 from the narrowest position C2 of the crotch part R of the disposable diaper 1 to the opening edge 20E of the rear pocket 20, the length of the part of the inner pad 31 that swings left and right due to the movement of the wearer's legs can be shortened, and the front end of the inner pad 31 is less likely to slip out of the front pocket 19. Therefore, the inner pad 31 can be stably held in the state inserted in the front pocket 19.

[0054] The narrowest position C2 of the crotch portion R of the disposable diaper 1 refers to the position in the front-rear direction y of the portion of the crotch portion R of the disposable diaper 1 where the length in the width direction x is the shortest. In the disposable diaper 1, when the narrowest portion of the crotch portion R is formed to a predetermined length in the front-rear direction y, the center position in the front-rear direction y of the narrowest portion of the crotch portion R formed to the predetermined length in the front-rear direction y is defined as the narrowest position C2 of the crotch portion R. In addition, when the opening edge 19E or the opening edge 20E is formed non-parallel to the width direction x, the above lengths L1 to L4 refer to the shortest length in the front-rear direction y from the position C1 or the position C2 to the opening edge 19E or the opening edge 20E.

[0055] The positions of the opening edge 19E of the front pocket 19, the opening edge 20E of the rear pocket 20, the center position C1 of the disposable diaper 1 in the front-rear direction y, and the narrowest position C2 of the crotch portion R of the disposable diaper 1 are determined when the front torso portion P and the rear torso portion Q of the outer cover member 2 are untied at the side seals and the disposable diaper 1 is fully unfolded. 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, and the length between each position is measured. Various other lengths and positions in this specification are also measured in a similar manner.

[0056] The ratio of length L1 to length L2, for example, L2 / L1, is preferably 0.60 or more, more preferably 0.65 or more, and is preferably 0.95 or less, more preferably 0.90 or less. The ratio of length L3 to length L4, for example, L3 / L4, is preferably 0.60 or more, more preferably 0.65 or more, and is preferably 0.95 or less, more preferably 0.90 or less.

[0057] The opening edge 19E of the front pocket 19 and / or the opening edge 20E of the rear pocket 20 are preferably formed at a position overlapping the absorbent main body 7, and more preferably, both the opening edge 19E of the front pocket 19 and the opening edge 20E of the rear pocket 20 are formed at a position 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 front pocket 19 and the rear pocket 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the front pocket 19 and the rear pocket 20. It is more preferable that the front pocket 19 is provided so as to extend forward from the position overlapping 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 overlapping the absorbent main body 7 beyond the rear end of the absorbent main body 7.

[0058] The opening edge 19E of the front pocket 19 and / or the opening edge 20E of the rear pocket 20 are preferably formed at a position overlapping the absorbent core 10, and more preferably, both the opening edge 19E of the front pocket 19 and the opening edge 20E of the rear pocket 20 are formed at a position overlapping the absorbent core 10. By providing the front pocket 19 and the rear pocket 20 in this manner, the front and rear ends of the inner pad 31 can be easily inserted into the front pocket 19 and the rear pocket 20. In addition, when the front and rear ends of the inner pad 31 are inserted into the front pocket 19 and the rear pocket 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 front pocket 19 and the rear pocket 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 rearward from the position where it overlaps with the absorbent core 10 beyond the rear end of the absorbent main body 7 .

[0059] The opening width W1 of the front pocket 19 and / or the opening width W2 of the rear pocket 20 is preferably 70% or more of the width of the absorbent core 10, more preferably 80% or more, and even more preferably 90% or more. The opening width W1 of the front pocket 19 and the opening width W2 of the rear pocket 20 may be 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 and 20, and makes it easier to stably hold the inner pad 31 inserted in the pockets 19 and 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 a position where the opening of the front pocket 19 or the opening of the rear pocket 20 overlaps with the absorbent core 10 when the opening of the front pocket 19 or the opening of the rear pocket 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 a position where the opening of the front pocket 19 or the opening of the rear pocket 20 overlaps with the absorbent core 10 in the front-to-rear direction y); when the opening 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 opening 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.

[0060] The opening width W1 of the front pocket 19 and / or the opening width W2 of the rear pocket 20 are preferably wider than the width of the absorbent core 10, and more preferably wider than the width of the absorbent main body 7. The opening of the front pocket 19 is formed at a position overlapping the absorbent core 10, and the opening width W1 of the front pocket 19 is preferably wider than the width of the absorbent core 10 at the position overlapping the opening of the front pocket 19, and more preferably wider than the width of the absorbent main body 7 at the position overlapping the opening of the front pocket 19. Similarly, the opening of the rear pocket 20 is formed at a position overlapping the absorbent core 10, and the opening width W2 of the rear pocket 20 is preferably wider than the width of the absorbent core 10 at the position overlapping the opening of the rear pocket 20, and more preferably wider than the width of the absorbent main body 7 at the position overlapping the opening of the rear pocket 20. Forming the pockets 19, 20 in this manner makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19, 20, and also makes it less likely that the front and rear ends of the inner pad 31 will inadvertently come out of the pockets 19, 20. Note that the width of the absorbent core 10 or the absorbent main body 7 at the position overlapping with the opening of the front pocket 19 or the opening of the rear pocket 20 means the length in the width direction x of the absorbent core 10 or the absorbent main body 7 at the position where the opening of the front pocket 19 or the opening of the rear pocket 20 overlaps with the absorbent core 10 or the absorbent main body 7 in the front-to-rear direction y.

[0061] From the viewpoint of facilitating the insertion of the front and rear ends of the inner pad 31 into the front pocket 19 and / or the rear pocket 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 with the thickness gauge SM-130 so that the final pressure is 2.2 N or less. The anvil and measuring probe have a circular contact surface with the measurement target having a diameter of 10 mm, and the contact surface is flat. 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.

[0062] 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.

[0063] The depth length D1 of the front pocket 19 and the depth length 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 front pocket 19 and the rear pocket 20. On the other hand, the depth length D1 of the front pocket 19 and the depth length 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.

[0064] The depth D1 of the front pocket 19 and the depth D2 of the rear pocket 20 may be the same or different. If the depth D2 of the rear pocket 20 is longer than the depth D1 of the front pocket 19, the rear end of the inner pad 31 is less likely to inadvertently come out of the rear pocket 20, which is preferable. For example, when the wearer bends forward while standing, the rear end of the inner pad 31 is less likely to come out of the rear pocket 20. 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 more preferably 2.0 times or less, more preferably 1.8 times or less, and even more preferably 1.6 times or less, of the depth D1 of the front pocket 19.

[0065] 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.

[0066] The opening edge 19E of the front pocket 19 is preferably located in the front torso portion P. In other words, the front cover sheet 17 is preferably provided in the front torso portion P, and not in the crotch portion R. This allows the front portion of the inner pad 31 to face the wearer's crotch over a larger area when the inner pad 31 is placed in the crotch portion of the disposable diaper 1 and worn, and allows urine and the like excreted by the wearer to be appropriately received.

[0067] 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.

[0068] 2, 5 and 6, the opening edge 20E of the rear pocket 20 is preferably located in the crotch region R. In other words, the rear cover sheet 18 is preferably provided from the rear torso region Q to the crotch region R. This makes it easier for the inner pad 31 to be stably held in the inserted state in the rear pocket 20 when the disposable diaper 1 is worn with the inner pad 31 placed on the skin-facing side.

[0069] 7 shows a modified example of the disposable diaper 1 shown in FIG. 2, and as shown in FIG. 7, the opening edge 20E of the rear pocket 20 may be located in the rear torso portion Q. In this case, too, the length L2 from the center position C1 in the front-rear direction y of the disposable diaper 1 to the opening edge 20E of the rear pocket 20 is shorter than the length L1 from the center position C1 in the front-rear direction y of the disposable diaper 1 to the opening edge 19E of the front pocket 19, and the length L3 from the narrowest position C2 of the crotch portion R of the disposable diaper 1 to the opening edge 19E of the front pocket 19 is shorter than the length L4 from the narrowest position C2 of the crotch portion R of the disposable diaper 1 to the opening edge 20E of the rear pocket 20.

[0070] 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.

[0071] It is preferable that the front cover sheet 17 and / or the rear cover sheet 18 are not joined to the absorbent main body 7, and it is more preferable that neither the front cover sheet 17 nor the rear cover sheet 18 are joined to the absorbent main 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 to the absorbent main 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 to the absorbent main body 2. It is more preferable that the front cover sheet 17 covers the front end of the absorbent main body 7 and is not joined to the absorbent main body 7, and it is more preferable that the rear cover sheet 18 covers the rear end of the absorbent main body 7 and is not joined to the absorbent main body 7. This makes it easier to insert the front and rear ends of the inner pad 31 into the pockets 19 and 20. In addition, when the rising flaps 11 are provided on both sides of the skin-facing side of the absorbent main body 7 in the width direction x, the rising flaps 11 tend to rise up favorably.

[0072] The cover sheets 17, 18 may be liquid-permeable (hydrophilic) or liquid-impermeable, and sheet materials that can be used for the top sheet 8 and the back sheet 9 can be used. For example, if the cover sheets 17, 18 are liquid-permeable, even if urine or the like is excreted on the cover sheets 17, 18, the urine or the like can pass through the cover sheets 17, 18, and a wider portion of the inner pad 31 can contribute to absorbing urine or the like. In this case, both the front cover sheet 17 and the rear cover sheet 18 may be liquid-permeable, or only one of them may be liquid-permeable, but it is preferable that at least the front cover sheet 17 is liquid-permeable. On the other hand, if the cover sheets 17, 18 are liquid-impermeable, the cover sheets 17, 18 can prevent leakage of urine or the like from the ventral or dorsal side.

[0073] One of the front cover sheet 17 and the rear cover sheet 18 may be liquid permeable and the other liquid impermeable. For example, the front cover sheet 17 may be liquid permeable and the rear cover sheet 18 may be liquid impermeable. 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 part 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 liquid impermeable, leakage of urine and the like from the back side when the wearer is in a 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. Therefore, the wearing comfort of the disposable diaper 1 can be improved.

[0074] 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, it is preferable that a part of the front torso elastic members 15A is arranged so as to overlap the absorbent core 10, and 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 in 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.

[0075] 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, it is preferable that a part of the rear torso elastic members 15B is arranged so as to overlap the absorbent core 10, and 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.

[0076] Fig. 8 shows a partial plan view from the front torso region P to the crotch region R of the disposable diaper 1 shown in Fig. 2, and as shown in Fig. 8, it is preferable that 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 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. In addition, it is preferable that the front torso elastic member 15A arranged between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent body 7 is provided continuously between the front end 19H of the front pocket 19 and the front end 7E1 of the absorbent body 7.

[0077] Fig. 9 shows a partial plan view from the rear torso region Q to the crotch region R of the disposable diaper 1 shown in Fig. 2. As shown in Fig. 9, it is preferable that 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 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 provided 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. In addition, it is preferable that the rear torso elastic member 15B arranged between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent body 7 is provided continuously between the rear end 20H of the rear pocket 20 and the rear end 7E2 of the absorbent body 7.

[0078] The front pocket 19 is preferably provided with an elastic member (hereinafter referred to as "front pocket elastic member") along the opening edge 19E of the front pocket 19. Also, the rear pocket 20 is preferably provided with an elastic member (hereinafter referred to as "rear pocket elastic member") along the opening edge 20E of the rear pocket 20. This will be described with reference to Figs. 10 to 12.

[0079] 10 to 12 show an example of a configuration in which the disposable diaper 1 shown in Figs. 2 to 5 is provided with elastic members for a front pocket and elastic members for a rear pocket. Fig. 10 shows a plan view of the disposable diaper 1 unfolded and spread out flat, as viewed from the skin-facing side, Fig. 11 shows a cross-sectional view of the disposable diaper shown in Fig. 10 taken along line XI-XI, and Fig. 12 shows an example of the formation of the joining regions of the front cover sheet 17 and the rear cover sheet 18 to the exterior member 2 for the disposable diaper 1 shown in Fig. 10. In Fig. 12, the joining regions of the front cover sheet 17 and the rear cover sheet 18 to the exterior member 2 are shown by cross-hatching, and the outer edges of the front pocket 19 and the rear pocket 20 are shown by two-dot chain lines. For ease of understanding, the leg elastic members, the torso elastic members, and the waist elastic members are omitted.

[0080] In Figs. 10 to 12, the front pocket elastic member 21 is provided along the opening edge 19E of the front pocket 19, and the rear pocket elastic member 22 is provided along the opening edge 20E of the rear pocket 20. The front pocket elastic member 21 is preferably provided on the front cover sheet 17 along the rear edge 17E of the front cover sheet 17, overlapping at least the non-bonded region 17B forming the front pocket 19. The front pocket elastic member 21 is also preferably fixed to the front cover sheet 17 in a stretched state. The rear pocket elastic member 22 is preferably provided on the rear cover sheet 18 along the front edge 18E of the rear cover sheet 18, overlapping at least the non-bonded region 18B forming the rear pocket 20. The rear pocket elastic member 22 is also preferably fixed to the rear cover sheet 18 in a stretched state. By providing the front pocket elastic member 21 and the rear pocket elastic member 22, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 are held down by the front pocket elastic member 21 and the rear pocket elastic member 22. Therefore, when the inner pad 31 is placed on the skin-facing side of the disposable diaper 1 and worn, the front and rear ends of the inner pad 31 are less likely to come off the pockets 19 and 20, and the inner pad 31 can be stably placed on the skin-facing side of the disposable diaper 1. Only one of the front pocket elastic member 21 and the rear pocket elastic member 22 may be provided, but it is preferable that both are provided. Hereinafter, the front pocket elastic member 21 and the rear pocket elastic member 22 may be collectively referred to as the "pocket elastic members 21, 22" in some cases.

[0081] The front pocket elastic member 21 is preferably provided longer in the width direction x than the opening width W1 of the front pocket 19. That is, the front pocket elastic member 21 preferably extends outward in the width direction x from both ends of the opening of the front pocket 19. The rear pocket elastic member 22 is preferably provided longer in the width direction x than the opening width W2 of the rear pocket 20. That is, the rear pocket elastic member 22 preferably extends outward in the width direction x from both ends of the opening of the rear pocket 20. By providing the pocket elastic members 21 and 22 in this manner, when the front and rear ends of the inner pad 31 are inserted into the pockets 19 and 20, the front and rear ends of the inner pad 31 are pressed by the pocket elastic members 21 and 22 over the entire width direction x, and the front and rear ends of the inner pad 31 are less likely to accidentally come out of the pockets 19 and 20.

[0082] The elastic member 21 for the front pocket may be disposed on the skin-facing side of the front cover sheet 17, or on the outer surface side of the front cover sheet 17. The front cover sheet 17 may be folded back at least once along a crease extending in the width direction x, and the elastic member 21 for the front pocket may be disposed between the folded-back front cover sheet 17. In this case, it is preferable that the crease of the front cover sheet 17 (when folded back along two or more creases, one or more of the creases) becomes the rear edge 17E of the front cover sheet 17, and forms the opening edge 19E of the front pocket 19. In FIG. 11, the front cover sheet 17 is folded back at the rear edge 17E, and the elastic member 21 for the front pocket is disposed between the folded-back front cover sheet 17.

[0083] The elastic member 22 for the rear pocket may be disposed on the skin-facing side of the rear cover sheet 18 or on the outer surface side of the rear cover sheet 18. The rear cover sheet 18 may be folded back at least once along a crease extending in the width direction x, and the elastic member 22 for the rear pocket may be disposed between the folded back parts of the rear cover sheet 18. In this case, it is preferable that the crease of the rear cover sheet 18 (when the rear cover sheet 18 is folded back along two or more creases, one or more of the creases) becomes the front edge 18E of the rear cover sheet 18 and forms the opening edge 20E of the rear pocket 20. In FIG. 11, the rear cover sheet 18 is folded back at the front edge 18E, and the elastic member 22 for the rear pocket is disposed between the folded back parts of the rear cover sheet 18.

[0084] The number of the front pocket elastic members 21 may be one or more. The number of the rear pocket elastic members 22 may be one or more. It is preferable that the front pocket elastic members 21 are provided in a plurality along the opening edge 19E of the front pocket 19, and the rear pocket elastic members 22 are provided in a plurality along the opening edge 20E of the rear pocket 20. If a plurality of front pocket elastic members 21 and rear pocket elastic members 22 are provided in this manner, the front and rear ends of the inner pad 31 are pressed flatly by the plurality of front pocket elastic members 21 or the plurality of rear pocket elastic members 22, and the front and rear ends of the inner pad 31 are more stably held within the front pocket 19 and the rear pocket 20.

[0085] In the front pocket 19, a plurality of front pocket elastic members 21 including a front pocket first elastic member 21A, a front pocket second elastic member 21B, and a front pocket third elastic member 21C are preferably arranged in the front-rear direction y. That is, in the front pocket 19, the front pocket first elastic member 21A, the front pocket second elastic member 21B, and the front pocket third elastic member 21C are preferably arranged as the front pocket elastic members 21 from the opening edge 19E side of the front pocket 19. In this case, the front pocket elastic members 21 are preferably arranged such that the separation distance (second separation distance) between the front pocket second elastic member 21B and the front pocket third elastic member 21C is wider than the separation distance (first separation distance) between the front pocket first elastic member 21A and the front pocket second elastic member 21B. With the front pocket elastic member 21 arranged in this manner, when the front end of the inner pad 31 is inserted into the front pocket 19, the front end of the inner pad 31 is firmly held by the first front pocket elastic member 21A near the opening edge 19E of the front pocket 19 and the second front pocket elastic member 21B, and the third front pocket elastic member 21C arranged away from the second front pocket elastic member 21B so that the second separation distance is wider than the first separation distance prevents the front end of the inner pad 31 from being distorted within the front pocket 19, and the front end of the inner pad 31 can be stably held within the front pocket 19. The separation distance between the second elastic member 21B for the front pocket and the third elastic member 21C for the front pocket is preferably at least 1.3 times the separation distance between the first elastic member 21A for the front pocket and the second elastic member 21B for the front pocket, more preferably at least 1.5 times, even more preferably at least 1.8 times, and preferably not more than 5.0 times, more preferably not more than 4.0 times, and even more preferably not more than 3.0 times.

[0086] Similarly, the rear pocket 20 is preferably provided with a plurality of rear pocket elastic members 22 including a rear pocket first elastic member 22A, a rear pocket second elastic member 22B, and a rear pocket third elastic member 22C arranged side by side in the front-rear direction y. That is, the rear pocket 20 is preferably provided with the rear pocket first elastic member 22A, the rear pocket second elastic member 22B, and the rear pocket third elastic member 22C from the opening edge 20E side of the rear pocket 20 as the rear pocket elastic members 22. In this case, the rear pocket elastic members 22 are preferably provided such that the separation distance (second separation distance) between the rear pocket second elastic member 22B and the rear pocket third elastic member 22C is wider than the separation distance (first separation distance) between the rear pocket first elastic member 22A and the rear pocket second elastic member 22B. With the elastic member 22 for the rear pocket provided in this manner, when the rear end of the inner pad 31 is inserted into the rear pocket 20, the rear end of the inner pad 31 is firmly held by the first elastic member 22A for the rear pocket near the opening edge 20E of the rear pocket 20 and the second elastic member 22B for the rear pocket, and the third elastic member 22C for the rear pocket, which is provided away from the second elastic member 22B for the rear pocket so that the second separation distance is wider than the first separation distance, prevents the rear end of the inner pad 31 from being distorted within the rear pocket 20, and the rear end of the inner pad 31 can be stably held within the rear pocket 20. The separation distance between the second elastic member 22B for the rear pocket and the third elastic member 22C for the rear pocket is preferably at least 1.3 times the separation distance between the first elastic member 22A for the rear pocket and the second elastic member 22B for the rear pocket, more preferably at least 1.5 times, even more preferably at least 1.8 times, and preferably at most 5.0 times, more preferably at most 4.0 times, and even more preferably at most 3.0 times.

[0087] The first elastic member 21A for the front pocket and the second elastic member 21B for the front pocket are preferably disposed near the opening edge 19E of the front pocket 19. For example, the first elastic member 21A for the front pocket and the second elastic member 21B for the front pocket are preferably disposed in 1 / 4 of the opening edge 19E side of the front pocket 19, more preferably in 1 / 6 of the opening edge, and even more preferably in 1 / 8 of the opening edge. The first elastic member 21A for the front pocket is preferably disposed in an area within 5 mm from the opening edge 19E of the front pocket 19, more preferably in an area within 3 mm, and even more preferably in an area within 2 mm. This allows gathers to be suitably formed along the opening edge 19E of the front pocket 19, and the front end of the inner pad 31 is easily held firmly by the first elastic member 21A for the front pocket and the second elastic member 21B for the front pocket. The third elastic member 21C for the front pocket is preferably positioned in 1 / 2 of the area of ​​the front pocket 19 on the opening edge 19E side, more preferably in 1 / 3 of the area, and even more preferably in 1 / 4 of the area.

[0088] The first elastic member 22A for the rear pocket and the second elastic member 22B for the rear pocket are preferably disposed near the opening edge 20E of the rear pocket 20. For example, the first elastic member 22A for the rear pocket and the second elastic member 22B for the rear pocket are preferably disposed in 1 / 4 of the area of ​​the rear pocket 20 from the opening edge 20E, more preferably in 1 / 6 of the area, and even more preferably in 1 / 8 of the area. The first elastic member 22A for the rear pocket is preferably disposed in an area within 5 mm from the opening edge 20E of the rear pocket 20, more preferably in an area within 3 mm, and even more preferably in an area within 2 mm. This allows gathers to be suitably formed along the opening edge 20E of the rear pocket 20, and the rear end of the inner pad 31 is easily held firmly by the first elastic member 22A for the rear pocket and the second elastic member 22B for the rear pocket. The third elastic member 22C for the rear pocket is preferably positioned in 1 / 2 of the area of ​​the rear pocket 20 on the opening edge 20E side, more preferably in 1 / 3 of the area, and even more preferably in 1 / 4 of the area.

[0089] The front pocket 19 may further be provided with a fourth elastic member for the front pocket as the front pocket elastic member 21. In this case, the fourth elastic member for the front pocket is provided at a position farther from the opening edge 19E than the third elastic member for the front pocket 21C. The separation distance (third separation distance) between the third elastic member for the front pocket 21C and the fourth elastic member for the front pocket is not particularly limited, but is preferably wider than the separation distance (first separation distance) between the first elastic member for the front pocket 21A and the second elastic member for the front pocket 21B. This makes it easier to insert the front end of the inner pad 31 deep into the front pocket 19, and the front end of the inner pad 31 is less likely to be distorted in the front pocket 19 due to the wearer's movement, so that the front end of the inner pad 31 is stably held in the front pocket 19. The front pocket 19 may further be provided with a fifth front pocket elastic member as the front pocket elastic member 21. In this case, the description of the fourth front pocket elastic member applies to the fifth front pocket elastic member. It is preferable that the front pocket 19 does not have any other elastic member between the opening edge 19E and the first front pocket elastic member 21A.

[0090] The rear pocket 20 may further be provided with a fourth elastic member for the rear pocket as the rear pocket elastic member 22. In this case, the fourth elastic member for the rear pocket is provided at a position farther from the opening edge 20E than the third elastic member for the rear pocket 22C. The separation distance (third separation distance) between the third elastic member for the rear pocket 22C and the fourth elastic member for the rear pocket is not particularly limited, but is preferably wider than the separation distance (first separation distance) between the first elastic member for the rear pocket 22A and the second elastic member for the rear pocket 22B. This makes it easier to insert the rear end of the inner pad 31 deep into the rear pocket 20, and the rear end of the inner pad 31 is less likely to be distorted in the rear pocket 20 due to the wearer's movement, so that the rear end of the inner pad 31 is stably held in the rear pocket 20. The rear pocket 20 may further be provided with a fifth rear pocket elastic member as the rear pocket elastic member 22. In this case, the description of the fourth rear pocket elastic member applies to the fifth rear pocket elastic member. It is preferable that the rear pocket 20 does not have any other elastic member between the opening edge 20E and the first rear pocket elastic member 22A.

[0091] The front pocket elastic member 21 is preferably arranged so as to overlap the absorbent core 10. The rear pocket elastic member 22 is preferably arranged so as to overlap the absorbent core 10. Thereby, 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. When a plurality of pocket elastic members 21, 22 are provided, it is preferable that one or more of the pocket elastic members 21, 22 are arranged so as to overlap the absorbent core 10. When the first elastic member 21A for the front pocket, the second elastic member 21B for the front pocket, and the third elastic member 21C for the front pocket are provided as the elastic members 21 for the front pocket, it is preferable that at least the first elastic member 21A for the front pocket and the second elastic member 21B for the front pocket are arranged so as to overlap with the absorbent core 10, and it is more preferable that the third elastic member 21C for the front pocket is also arranged so as to overlap with the absorbent core 10. When the first elastic member 22A for the rear pocket, the second elastic member 22B for the rear pocket, and the third elastic member 22C for the rear pocket are provided as the elastic members 22 for the rear pocket, it is preferable that at least the first elastic member 22A for the rear pocket and the second elastic member 22B for the rear pocket are arranged so as to overlap with the absorbent core 10, and it is more preferable that the third elastic member 22C for the rear pocket is also arranged so as to overlap with the absorbent core 10.

[0092] It is preferable that the front pocket elastic member 21 is arranged in, for example, 1 / 2 of the area of ​​the front pocket 19 on the opening edge 19E side, and is not arranged in the back 1 / 2 of the area of ​​the front pocket 19. That is, when the front pocket 19 is divided into two equal parts in the depth direction (front-rear direction y), the front pocket elastic member 21 is arranged in 1 / 2 of the area of ​​the front pocket 19 on the opening edge 19E side, but the front pocket elastic member 21 is not arranged in the back 1 / 2 of the area of ​​the front pocket 19. This makes it easy to insert the front end of the inner pad 31 deep into the front pocket 19 when inserting the front end of the inner pad 31 into the front pocket 19. More preferably, the front pocket elastic member 21 is arranged in 1 / 3 of the area of ​​the front pocket 19 on the opening edge 19E side, and is not arranged in the back 2 / 3 of the area of ​​the front pocket 19.

[0093] The rear pocket elastic member 22 is preferably arranged, for example, in a 1 / 2 region of the rear pocket 20 on the opening edge 20E side, and is not arranged in a 1 / 2 region on the back side of the rear pocket 20. That is, when the rear pocket 20 is divided into two equal parts in the depth direction (front-rear direction y), the rear pocket elastic member 22 is arranged in a 1 / 2 region of the rear pocket 20 on the opening edge 20E side, but it is preferable that the rear pocket elastic member 22 is not arranged in a 1 / 2 region on the back side of the rear pocket 20. This makes it easy to insert the rear end of the inner pad 31 to the back of the rear pocket 20 when inserting the rear end of the inner pad 31 into the rear pocket 20. More preferably, the rear pocket elastic member 22 is arranged in a 1 / 3 region of the rear pocket 20 on the opening edge 20E side, and is not arranged in a 2 / 3 region on the back side of the rear pocket 20.

[0094] 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 articles of the present invention, the front and rear ends of the inner pad can be inserted into the front and rear pockets 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. 6. In FIG. 6, 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-rear direction y but also in the width direction x.

[0095] 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.

[0096] 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.

[0097] 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]

[0098] 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, 17E: Back edge 18: Rear cover sheet, 18A: Bonded area, 18B: Non-bonded area, 18E: Front edge 19: Front pocket, 19E: Opening edge 20: Rear pocket, 20E: Opening edge 21: elastic member for front pocket, 21A: first elastic member for front pocket, 21B: second elastic member for front pocket, 21C: third elastic member for front pocket 22: Rear pocket elastic member, 22A: Rear pocket first elastic member, 22B: Rear pocket second elastic member, 22C: Rear pocket third elastic member 31: Inner pad 32: Absorbent core (of inner pad) P: Front torso Q: Rear torso R: Crotch C1: Center of the disposable diaper in the front-to-back direction C2: The narrowest point of the crotch of the disposable diaper

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 side seal portions on both sides in the width direction, Only one front pocket is provided on the skin side of the front torso portion, the front pocket being open toward the center in the front-rear direction; Only one rear pocket is provided on the skin side of the rear torso portion, the rear pocket being open toward the center in the front-rear direction; A disposable diaper characterized in that the front pocket and the rear pocket are provided so as to satisfy the following requirements (A) and (B): (Requirement A) When the side seal portions of the front and rear torso portions of the outer cover are released and the disposable diaper is laid out flat, the length from the center of the disposable diaper in the front-to-back direction to the edge of the opening of the rear pocket is shorter than the length from the center of the disposable diaper in the front-to-back direction to the edge of the opening of the front pocket. (Requirement B) When the side seal portions of the front and rear torso portions of the outer cover are released and the disposable diaper is laid out flat, the length from the narrowest point of the crotch portion of the disposable diaper to the opening edge of the front pocket is shorter than the length from the narrowest point of the crotch portion of the disposable diaper to the opening edge of the rear pocket.

2. A front cover sheet is provided on the skin side of the front body portion of the exterior member, the front cover sheet has a joined region joined to at least a part of the exterior member and / or the absorbent body, and a non-jointed region not joined to either the exterior member or the absorbent body, the non-jointed region extending forward from the rear edge of the front cover sheet to form the front pocket with the rear edge of the front cover sheet as an opening edge; and / or A rear cover sheet is provided on the skin surface side of the rear body portion of the exterior member, 2. The disposable diaper of claim 1, wherein the rear cover sheet has a bonded region bonded to at least a portion of the outer cover member and / or the absorbent body, and a non-bonded region that is not bonded to either the outer cover member or the absorbent body, and the non-bonded region extends rearward from the front edge of the rear cover sheet, thereby forming the rear pocket with the front edge of the rear cover sheet as an opening edge.

3. 3. The disposable diaper according to claim 1, wherein an edge of an opening of the front pocket and / or an edge of an opening of the rear pocket are formed at a position overlapping with the absorbent core.

4. The width of the opening of the front pocket is greater than the width of the absorbent core at the position where the opening of the front pocket overlaps, and / or The disposable diaper according to claim 3 , wherein the opening width of the rear pocket is wider than the width of the absorbent core at a position overlapping with the opening of the rear pocket.

5. The disposable diaper according to any one of claims 1 to 4, wherein the depth of the rear pocket is longer than the depth of the front pocket.

6. The disposable diaper according to any one of claims 1 to 5, wherein an opening edge of the rear pocket is located in the crotch portion.

7. The front pocket is provided with a front pocket elastic member along the opening edge of the front pocket, and / or The disposable diaper according to any one of claims 1 to 6, wherein the rear pocket is provided with a rear pocket elastic member along an opening edge of the rear pocket.

8. The front pocket elastic member is provided in a plurality of pieces along the opening edge of the front pocket, and / or 8. The disposable diaper according to claim 7, wherein the rear pocket elastic member is provided in a plurality of pieces along an opening edge of the rear pocket.

9. The front pocket is provided with a first elastic member, a second elastic member, and a third elastic member from an opening edge side of the front pocket as the front pocket elastic members, A distance between the second elastic member for the front pocket and the third elastic member for the front pocket is wider than a distance between the first elastic member for the front pocket and the second elastic member for the front pocket, and / or The rear pocket is provided with a first elastic member for the rear pocket, a second elastic member for the rear pocket, and a third elastic member for the rear pocket, from an opening edge side of the rear pocket, 9. The disposable diaper according to claim 7 or 8, wherein the distance between the second elastic member for the rear pocket and the third elastic member for the rear pocket is wider than the distance between the first elastic member for the rear pocket and the second elastic member for the rear pocket.

10. 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 torso elastic members are not arranged so as to overlap the absorbent core, or if a portion of the front torso elastic members is arranged so as to overlap the absorbent core, the front torso elastic members are provided intermittently at the portion overlapping the absorbent core, and / or A rear body portion of the exterior member is provided with a plurality of rear body portion elastic members extending in the width direction and aligned in the front-rear direction, The disposable diaper according to any one of claims 1 to 9, wherein the rear torso elastic members are not positioned so as to overlap the absorbent core, or, if a portion of the rear torso elastic members is positioned so as to overlap the absorbent core, the rear torso elastic members are provided intermittently in the portion overlapping the absorbent core.

11. 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, a front end of the front pocket is located forward of a 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; and / or 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 disposable diaper according to any one of claims 1 to 10, wherein 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.

12. A combination of an absorbent article comprising the disposable diaper according to any one of claims 1 to 11 and an inner pad disposed on the skin-facing side of the disposable diaper.

13. The combination of absorbent articles according to claim 12, 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 opening width of the front pocket and the opening width of the rear pocket.

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