Absorbent article

Abstract

To provide a diaper which can easily exert a function.SOLUTION: An absorbent article includes: a liquid-permeable skin-side sheet provided on a skin side of an absorbent body; a pair of leak-prevention sheets which is provided on outer sides of a center in a width direction, each with an inner side part in the width direction standing directed toward a skin side at a bonding end extending in a longitudinal direction as a boundary so as to form a leak-prevention wall, and which each includes a first elastic member bonded to an inner side in the width direction in a stretched state in the longitudinal direction; a second elastic member provided width-widely on an outer side in the longitudinal direction and provided width-narrowly in an inseam region corresponding to an inseam part of a wearer in use, curved toward an inner side in the width direction from an outer side in the longitudinal direction to the inseam region, provided in a stretched state in the substantially longitudinal direction so as to overlap with the absorbent body in the inseam region in a thickness direction, and having an elastic end that does not overlap with the absorbent body; and third elastic members each having an elastic end at the same position as the elastic end of the second elastic member, and provided in the stretched state in the longitudinal direction on an outer side of the second elastic member in the width direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an absorbent article. [Background technology]

[0002] There is known an absorbent article (diaper) having a pocket structure in which a sheet is provided near the longitudinal end to cover the skin side, and discharged liquid is contained between the sheet and the absorbent body, thereby preventing leakage of discharged liquid from the longitudinal end (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-150245 A Summary of the Invention [Problem to be solved by the invention]

[0004] The sheet forming the pocket structure may remain in contact with the absorbent body even when the diaper is worn. If the sheet forming the pocket structure remains in contact with the absorbent body, no pocket is formed on the outer side of the diaper in the longitudinal direction, and leakage from the longitudinal ends cannot be suppressed, which may result in the diaper not functioning properly.

[0005] An object of the present invention is to provide a diaper that is easy to function. [Means for solving the problem]

[0006] An absorbent article according to one aspect of the present invention has a length along a longitudinal direction corresponding to the front-to-rear direction of a wearer, a length along a width direction perpendicular to the longitudinal direction, an absorbent body for absorbing discharged liquid, an exterior body for bringing the absorbent body close to the skin surface of a wearer, a skin-facing sheet having liquid permeability and arranged on the skin-facing side of the absorbent body, and a pair of first elastic members arranged on the outer side in the width direction from the center in the width direction, the inner side in the width direction standing up to the skin-facing side at a joint end extending in the longitudinal direction, forming a leak-proof wall, and attached in a stretched state in the longitudinal direction to the inner side in the width direction. the absorbent body in the crotch region, and a third elastic member having a stretched end that is common to the stretched end of the second elastic member and that is arranged in a stretched state in the longitudinal direction outside the absorbent body and in a stretched state in the longitudinal direction outside the absorbent body in the crotch region. Effect of the Invention

[0007] According to the present invention, a diaper that easily performs its functions can be provided. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a diaper according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the diaper according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of the diaper according to the embodiment when not being worn, taken along the width direction at the center in the longitudinal direction. [Figure 4] FIG. 4 is a plan view of the diaper according to the embodiment in a stretched state, as viewed from the skin-facing side. [Diagram 5] FIG. 5 is a diagram showing a preferred rise angle of the edge of the diaper. [Figure 6] FIG. 6 is a view of the vicinity of an end portion of the diaper as viewed from the non-skin facing side. [Figure 7] FIG. 7 is a diagram showing the force applied to the diaper by the elastic member in the vicinity of the imaginary line. [Figure 8] FIG. 8 is a diagram showing the relationship between the absorbent body and the elastic members overlapping the absorbent body. [Figure 9] FIG. 9 is a diagram showing the positional relationship between the standing gathers and the pocket forming sheet. [Figure 10] FIG. 10 is a cross-sectional view showing another example of the positional relationship between the standing gathers and the pocket forming sheet. [Figure 11] FIG. 11 is a diagram showing the relationship between the thickness of the absorbent body at the longitudinal end portions and the pocket portions. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, absorbent articles according to embodiments of the present invention will be described with reference to the drawings. Note that the configurations of the following embodiments are merely examples, and the present invention is not limited to the configurations of these embodiments.

[0010] <Embodiment> In this embodiment, the longitudinal direction of a tape-type disposable diaper (an example of an "absorbent article" in the present application, hereinafter simply referred to as a "diaper") is the direction connecting the front body arranged opposite the wearer's abdomen and the rear body arranged opposite the wearer's back. Between the front body (one side in the longitudinal direction) and the rear body (the other side in the longitudinal direction) (the center in the longitudinal direction), a crotch portion arranged under the wearer's crotch (opposed to the crotch). In addition, when the diaper is worn by a wearer (hereinafter abbreviated as "worn state"), the side facing the wearer's skin (the inner side when worn) is the skin-facing side, and the opposite side to the skin-facing side (the outer side when worn) is the non-skin-facing side. Furthermore, the direction connecting the skin-facing side and the non-skin-facing side is the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is the width direction. In addition, the view from the thickness direction is the planar view. A diaper has a length along a longitudinal direction corresponding to the front-to-back direction of a wearer and a length along a width direction perpendicular to the longitudinal direction, and is worn under the crotch of a wearer. In addition, terms related to directions used in this application mean directions corresponding to the front-to-back, left-to-right and right-to-left directions of a wearer when the diaper is worn. For example, the left-to-right direction in this application means a direction corresponding to the left-to-right directions of a wearer when the diaper is worn.

[0011] FIG. 1 is a perspective view of a diaper according to this embodiment. The diaper 1 according to this embodiment is for adults (for nursing care). The diaper 1 has a crotch region 1B, which is a region corresponding to the crotch covering the pubic area of ​​the wearer when worn, a front body region 1F, which is located in front of the crotch region 1B and corresponds to the waist of the wearer's abdomen, and a back body region 1R, which is located behind the crotch region 1B and corresponds to the waist of the wearer's back. The left and right edges of the back body region 1R are provided with hook carriers 2L1, 2L2, 2R1, and 2R2, which are hook-and-loop fasteners having small hook portions densely arranged on the skin-facing side of the wearer and having hook tapes that can be repeatedly attached by engaging the hook portions with loop members densely arranged on the non-skin-facing side of a front patch 2F provided on the front body region 1F. When the hook tapes provided on the hook carriers 2L1, 2L2, 2R1, and 2R2 are attached to the front patch 2F with the front body region 1F positioned on the wearer's abdomen and the rear body region 1R positioned on the wearer's back, the diaper 1 is fixed to the wearer's body in a state where it surrounds the wearer's waist circumference and thighs. Since the diaper 1 is fixed to the wearer's body in this manner, the wearer can freely change his or her body position while wearing the diaper 1. The non-skin facing sides of the hook carriers 2L1, 2L2, 2R1, and 2R2 may be engageable with the hook tapes.

[0012] The hook carriers 2L1, 2L2, 2R1, and 2R2 are arranged on the inner side in the width direction when not in use. The hook carriers 2L1, 2L2, 2R1, and 2R2 may be folded. By folding the hook carriers 2L1, 2L2, 2R1, and 2R2, the hook tape portion is not exposed to the outside of the diaper 1. The hook tape portion is provided with a minute key-shaped structure formed of resin, and by folding the hook carriers 2L1, 2L2, 2R1, and 2R2 in an unused state, it is possible to prevent the key-shaped structure from being unexpectedly damaged and becoming difficult to engage with the front patch 2F.

[0013] In the diaper 1, an absorbent 6 capable of absorbing and retaining liquid is mainly arranged around the crotch region 1B. In addition, in order to prevent the formation of gaps between the diaper 1 and the wearer's skin that serve as a liquid outflow path, leg gathers 3AL, 3AR are provided in the diaper 1 at a portion along the wearer's leg circumference (thigh portion), and three-dimensional gathers 3BL, 3BR are provided on the inside of the leg gathers 3AL, 3AR in the width direction of the diaper 1, and a pocket forming sheet 9P having an elastic member arranged in the width direction is provided at a portion along the wearer's abdominal circumference. The elastic member provided on the pocket forming sheet 9P applies a biasing force so that the diaper 1 contracts in the width direction, and has the same effect as the waist gathers in pants-type diapers. The elastic members provided on the leg gathers 3AL, 3AR, the three-dimensional gathers 3BL, 3BR, and the pocket forming sheet 9P are in close contact with the wearer's skin by the elastic force of the elastic members. Thus, the liquid discharged from the wearer is absorbed by the absorbent 6 without leaking from the diaper 1. As the elastic member, a rubber thread or band may be appropriately selected.

[0014] FIG. 2 is an exploded perspective view of the diaper 1. FIG. 3 is a cross-sectional view of the diaper 1 cut in the width direction at the center in the longitudinal direction. FIG. 4 is a plan view of the diaper 1 in an extended state, viewed from the skin-facing side. The diaper 1 has a cover sheet 4 that forms an outer surface when worn. The cover sheet 4 is a sheet-like member having a substantially rectangular appearance with constrictions 4KL, 4KR at the portions corresponding to the long sides, and forms the exterior surface of the diaper 1. The constrictions 4KL, 4KR are provided at the portions where the wearer's thighs are located (leg surrounding portions 10L, 10R shown in FIG. 4). The cover sheet 4 is provided to reinforce the back sheet 5 described later and to improve the feel. For example, a nonwoven fabric made of a liquid-impermeable thermoplastic resin can be used as the material for the cover sheet 4 in order to suppress leakage of excrement. Examples of liquid-impermeable thermoplastic resins include polyethylene (PE) and polypropylene (PP). The cover sheet 4 is not limited to a single-layer structure, but may be a multi-layer structure having an inner cover sheet and an outer cover sheet.

[0015] The diaper 1 has a back sheet 5 (non-skin-facing sheet), an absorbent 6, and a top sheet 7 ("skin-facing portion"), which are laminated in this order on the skin-facing side of the cover sheet 4. The back sheet 5 has the same planar shape as the cover sheet 4. The back sheet 5 is a sheet-like member having a substantially rectangular appearance with constrictions 5KL, 5KR at the portions corresponding to the long sides, and is disposed on the skin-facing side of the cover sheet 4. The constrictions 5KL, 5KR are provided at the portions where the wearer's thighs are located (leg surrounding portions 10L, 10R shown in FIG. 4). The top sheet 7 is a sheet-like member having a substantially rectangular appearance, and the absorbent 6 is a mat-like member having a substantially hourglass-shaped appearance. The back sheet 5, the absorbent 6, and the top sheet 7 are laminated in this order on the cover sheet 4 with their longitudinal directions coinciding with the longitudinal direction of the cover sheet 4. The back sheet 5, like the cover sheet 4, is a sheet formed of a liquid-impermeable thermoplastic resin material to suppress leakage of discharged liquid. The back sheet 5 is preferably made of a material that is also moisture permeable in order to prevent the diaper from becoming stuffy when worn. The top sheet 7 is a sheet-like member that is placed on the wearer's skin side so as to cover the water-absorbing surface of the absorbent body 6. This top sheet 7 is water permeable, i.e., liquid permeable, in part or in whole. Therefore, when the diaper 1 is worn, liquid discharged by the wearer passes through the top sheet 7, which may come into contact with the wearer's skin, into the absorbent body 6, and is absorbed therein. For example, woven fabric, nonwoven fabric, or porous film is used as the material for the top sheet 7. The top sheet 7 may be hydrophilic. The sheets and the like may be joined by adhesion using a hot melt adhesive, an ultra-thin adhesive, or the like. This includes ultrasonic fusion.

[0016] The back sheet 5, absorbent body 6, and top sheet 7 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's private parts are covered with the cover sheet 4 in which the back sheet 5, absorbent body 6, and top sheet 7 are laminated, both ends in the longitudinal direction of the back sheet 5, absorbent body 6, and top sheet 7 are located on the wearer's ventral side and back side. In other words, the wearer's private parts are covered by the absorbent body 6 from the wearer's ventral side to the back side. Therefore, whether the wearer is lying in a supine position or a prone position, the discharged liquid comes into contact with the absorbent body 6 via the top sheet 7.

[0017] In addition, the diaper 1 has elastic members 4SL, 4SR for forming the leg gathers 3AL, 3AR between the cover sheet 4 and the back sheet 5 so as to stretch in the longitudinal direction of the diaper 1. The elastic members 4SL, 4SR are provided in an appropriate number (three in this embodiment) determined according to the elastic force (contractile force) required in the design of the diaper 1. As shown in FIG. 4, the leg gathers 3AL, 3AR are arranged at both ends in the width direction of the crotch region 1B, including the leg surrounding portions 10L, 10R which are portions of the diaper 1 that follow the circumference of the legs of the wearer. The leg surrounding portions 10L, 10R are arranged at both ends in the width direction of the crotch region 1B, and the elastic members 4SL, 4SR are bonded to the leg surrounding portions 10L, 10R in a stretched state so as to extend in the longitudinal direction, thereby stretching the leg surrounding portions 10L, 10R in the longitudinal direction. The stretchable regions of the elastic members 4SL, 4SR become the leg gathers 3AL, 3AR.

[0018] The diaper 1 also has long, narrow, strip-like side sheets 8L, 8R. The side sheets 8L, 8R are liquid-impermeable sheets provided on the long sides of the top sheet 7. A pair of the side sheets 8L, 8R are provided on the outer side of the widthwise center of the diaper 1. Like the cover sheet 4, the side sheets 8L, 8R are provided with constrictions 8KL, 8KR at the locations where the wearer's thighs are located (leg surrounding portions 10L, 10R shown in FIG. 4). The side sheets 8L, 8R have elastic members 8EL, 8ER for forming three-dimensional gathers 3BL, 3BR arranged in a stretched state along the longitudinal direction. When the diaper 1 is worn, the side sheets 8L, 8R are pulled in the longitudinal direction by the contractile force of the elastic members 8EL, 8ER and rise from the top sheet 7 toward the skin side, forming three-dimensional gathers 3BL, 3BR that are leakage prevention walls that prevent discharged liquid from leaking outward in the width direction. The side sheets 8L, 8R are an example of a leak-proof sheet in the present disclosure, and the elastic members 8EL, 8ER are an example of a first elastic member in the present disclosure.

[0019] The cover sheet 4 is provided with an elastic member 4C, which prevents a gap from being formed between the diaper 1 and the wearer's abdominal circumference, on the inside in the width direction of the diaper 1 relative to the elastic members 4SL, 4SR. The elastic member 4C is arranged in a curved shape extending outward in the width direction at both longitudinal end sides. The elastic member 4C is provided according to the elastic force (contractile force) required for the design of the diaper 1. The elastic member 4C is an example of a second elastic member in the present disclosure.

[0020] The pocket-forming sheet 9P is disposed at least on the rear body region 1R side of the diaper 1. The pocket-forming sheet 9P is disposed so that its longitudinal inner side overlaps with the longitudinal end of the absorbent body 6, and its longitudinal outer side is joined to the top sheet 7. The longitudinal inner side of the pocket-forming sheet 9P is not joined to the top sheet 7, and forms a pocket portion P between the longitudinal end of the absorbent body 6 and the pocket-forming sheet 9P. By providing the pocket portion P, it is possible to suppress back leakage caused by discharged liquid reaching the longitudinal end of the absorbent body 6 reaching the longitudinal end of the diaper 1. In Figs. 2 and 4, the pocket-forming sheet 9P is disposed only in the rear body region 1R, but it can also be disposed on the front body region 1F side in addition to the rear body region 1R.

[0021] Elastic members 9E are arranged in a stretched state in the width direction on the pocket forming sheet 9P. Of the elastic members 9E, those arranged on the inner end in the longitudinal direction that is not joined to the top sheet 7 are called inner elastic members 9EB, and those arranged on the outer end in the longitudinal direction that is joined to the top sheet 7 are called outer elastic members 9ER.

[0022] When the hook tapes provided on the hook carriers 2L1, 2L2, 2R1, 2R2, which are tapes provided on both the left and right sides of the elastic member 9E, are attached to the front patch 2F on the abdominal side of the wearer, the elastic member 9E exerts a contractile force to bring the diaper 1 into close contact with the wearer and prevent the formation of a gap between the diaper 1 and the wearer's abdominal circumference. In addition, the inner elastic member 9EB arranged on the inner side in the longitudinal direction exerts a contractile force to lift the pocket forming sheet 9P to the skin side, forming a pocket portion P between the absorbent body 6 and the inner elastic member 9EB. The inner elastic member 9EB is an example of a third elastic member in the present disclosure.

[0023] The absorbent body 6 has an absorbent core 6C and a core wrap sheet 6W that wraps the absorbent core 6C. In this embodiment, the absorbent core 6C is formed by laminating a plurality of absorbent mats. In this embodiment, the absorbent core 6C has an upper absorbent mat 6A arranged on the skin side and a lower absorbent mat 6B arranged on the non-skin side. The upper absorbent mat 6A is an absorbent mat that is mainly arranged in the crotch region 1B, and is a rectangle having a width corresponding to the width of the absorbent body 6 in the crotch region 1B in a plan view. The lower absorbent mat 6B is an absorbent mat that is arranged over the entire region of the absorbent body 6, and is an hourglass shape having a constriction in the crotch region 1B in a plan view. That is, the upper absorbent mat 6A is laminated with the lower absorbent mat 6B so as to be contained inside the lower absorbent mat 6B when viewed in a plan view from the skin side. In addition, since the upper absorbent mat 6A is arranged on the crotch region 1B side, only the lower absorbent mat 6B extends to the longitudinal end of the absorbent body 6. The upper absorbent mat is an example of an upper absorbent body in the present disclosure, and the lower absorbent mat is an example of a lower absorbent body in the present disclosure.

[0024] The crotch region 1B is sandwiched between the wearer's legs, and thus compressive pressure is applied inward in the width direction. On the other hand, in the front body region 1F and the back body region 1R, the weight of the wearer is applied, and pressure is applied in the thickness direction of the absorbent core 6C. To deal with these pressures, the crotch region 1B of the absorbent core 6C is provided with a constriction. Furthermore, the upper layer absorbent mat 6A and the lower layer absorbent mat 6B are laminated to give the absorbent core 6C in the crotch region 1B a high basis weight. This prevents the absorbent core 6C from losing its shape inward in the width direction in the crotch region 1B. Also, in the front body region 1F and the back body region 1R, the width of the absorbent core 6C is widened to increase the area on which the weight is applied, thereby preventing the absorbent core 6C from losing its shape in the thickness direction. For this reason, it is preferable to make the absorbent core 6C approximately hourglass-shaped.

[0025] The absorbent core 6C is, for example, a hydrophilic polymer having a cross-linked structure capable of absorbing and retaining water, which is filled in the gaps between short fibers of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers of synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been hydrophilically treated. The absorbent core 6C has a structure that holds granular absorbent polymer such as cellulose acylate (cellulose ester) or cellulose ester (cellulose ester). Therefore, in the absorbent core 6C, the volumetric change of the absorbent resin before and after absorbing liquid basically occurs within the short fibers that hold the absorbent resin in the gaps. Therefore, when the absorbent core 6C is viewed as a whole, it can be said that the expansion rate of the thickness of the absorbent core 6C that has absorbed liquid is not as large as the expansion rate of the absorbent resin itself.

[0026] The SAP particles of this embodiment refer to a resin composition containing SAP in a granular form. The term "SAP-containing resin composition" as used herein includes both a composition consisting of SAP alone and a composition containing SAP as the main component and containing other substances to the extent that they do not adversely affect the water absorption. Examples of "other substances" include additives (such as surface modifiers added to make the particle surface hydrophobic) and unreacted monomers remaining during the synthesis of SAP.

[0027] The core wrap sheet 6W is a thin liquid-permeable sheet, and wrapping the absorbent core 6C with the core wrap sheet 6W makes it difficult for the SAP of the absorbent core 6C to be mixed with other structures. In addition, the absorbent core 6C is prevented from losing its shape. The core wrap sheet 6W can be made of pulp fiber, and tissue paper can be used as an example. The absorbent body 6 is wrapped in the back sheet 5 and the top sheet 7, and these sheets can also prevent the absorbent body 6 from losing its shape, so the core wrap sheet 6W may not be provided.

[0028] The three-dimensional gathers 3BL, 3BR formed by the side sheets 8L, 8R and the elastic members 8EL, 8ER are arranged along both ends of the top sheet 7 in the width direction and extend in the longitudinal direction of the diaper 1. The three-dimensional gathers 3BL, 3BR have joints 30L, 30R joined to the skin-facing side of the top sheet 7 and standing parts 31L, 31R standing from the joints 30L, 30R to the skin-facing side. The joints 30L, 30R are parts of the side sheets 8L, 8R joined to the top sheet 7 and the back sheet 5 or the cover sheet 4 on the outer side of the top sheet 7. A hot melt adhesive is used for joining these parts. The standing parts 31L, 31R are located on the inner side of the joints 30L, 30R in the width direction of the diaper 1 and stand to the skin-facing side by the contractile force of the elastic members 8EL, 8ER when the diaper 1 is worn. The boundaries between the joints 30L, 30R and the standing portions 31L, 31R are connected to the top sheet 7 and become joint ends 32L, 32R that are the rising points of the standing portions 31L, 31R. The standing portions 31L, 31R can rise on the skin-facing side at the joint ends 32L, 32R that are the boundaries between the joints 30L, 30R and the standing portions 31L, 31R. In other words, the joints 30L, 30R are provided on the outer side in the width direction at the joint ends 32L, 32R and are joined to the top sheet 7, and the inner side in the width direction is not bonded and therefore rises from the top sheet 7 to form the standing portions 31L, 31R.

[0029] The distance between the joining ends 32L, 32R and the free ends of the three-dimensional gathers to which the elastic members 8EL, 8ER facing the joining ends are attached is substantially the same throughout the entire area in which the three-dimensional gathers 3BL, 3BR are formed. Therefore, when the diaper 1 is worn, the three-dimensional gathers 3BL, 3BR rise at the same height in the front body region 1F, the crotch region 1B, and the back body region 1R and fit along the skin surface of the wearer.

[0030] The entire longitudinal ends of the standing parts 31L, 31R of the side sheets 8L, 8R are bonded to the top sheet 7 by a hot melt adhesive to form the fixed parts 33L, 33R. The joining parts 30L, 30R extend to the longitudinal ends of the side sheets 8L, 8R, so that the side sheets 8L, 8R are bonded to the top sheet over the entire longitudinal ends. The fixed parts 33L, 33R are present in the front body region 1F and the rear body region 1R, but at least one of them is provided at a position that does not overlap with the absorbent body 6. In the embodiment shown in FIG. 4, the fixed parts 33L, 33R do not overlap with the absorbent body 6 in both the front body region 1F and the rear body region 1R. The absorbent body 6 is thick because it is made up of multiple laminated absorbent mats, and if the fixing parts 33L, 33R are provided at the points where they overlap the absorbent body 6, the biasing force of the elastic members 8EL, 8ER is less likely to be transmitted to the fixing parts 33L, 33R. If the fixing parts 33L, 33R are provided at points where the absorbent body 6 does not extend, the fixing parts 33L, 33R will be more likely to follow the biasing force of the elastic members 8EL, 8ER.

[0031] In addition, the free end portions on the outer side of the arrangement area of ​​the elastic members 8EL, 8ER in the longitudinal direction can be left unattached to the top sheet 7 even in the fixing parts 33L, 33R. By not adhering the free end portions to the top sheet 7, the biasing force of the elastic members 8EL, 8ER is transmitted gently over the entire area of ​​the fixing parts 33L, 33R, and the elastic force of the fixing parts 33L, 33R in the longitudinal inward direction is reduced. This makes it possible to prevent the biasing force from being concentrated on the members 8EL and 8ER.

[0032] The absorbent body 6 does not extend to the widthwise outer sides of the front body region 1F and the rear body region 1R of the diaper 1, and instead the side sheets 8L, 8R, the back sheet 5, and the cover sheet 4, which do not have a function of absorbing discharged liquid, extend thereto. In the extending region of the absorbent body 6, these sheets have the function of bringing the absorbent body 6 close to the wearer's skin surface so that it can easily come into contact with the skin surface of the wearer, protecting the absorbent body 6 and suppressing its positional shift, and suppressing leakage of discharged liquid to the non-skin-facing side or side surface. In the widthwise outer region where the absorbent body 6 does not extend, they have the function of covering and protecting the sides of the wearer's body. A structure in which these sheets are combined is sometimes called an exterior body.

[0033] FIG. 5 is a diagram showing a preferred rise angle of the end of the diaper. More specifically, it is a cross-sectional view of the diaper 1 cut in the longitudinal direction at the widthwise center of the longitudinal outer side. The side sheets 8L, 8R of the diaper 1 according to this embodiment are provided with elastic members 8EL, 8ER in the longitudinal direction. The side sheets 8L, 8R are raised by the urging force of the elastic members 8EL, 8ER to form the three-dimensional gathers 3BL, 3BR, but the entire diaper 1 is contracted inwardly in the longitudinal direction. Since the side sheets 8L, 8R are joined to the pocket-forming sheet 9P in the area where the pocket-forming sheet 9P is disposed, the inner side of the longitudinal direction of the pocket-forming sheet 9P rises toward the skin side in response to the rise of the three-dimensional gathers 3BL, 3BR, forming a pocket portion P between the absorber 6 and the pocket-forming sheet 9P. When the diaper 1 is worn, the discharged liquid that flows longitudinally along the skin-facing side of the absorbent body 6 enters and is retained in the pocket portion P formed by the standing up of the three-dimensional gathers 3BL, 3BR, and therefore the diaper 1 of this embodiment is capable of preventing leakage of discharged liquid from the longitudinal ends.

[0034] In addition to the elastic members 8EL, 8ER, the diaper 1 is provided with an elastic member 4C extending in the longitudinal direction on the non-skin facing side as viewed from the absorber 6, which exerts a biasing force so that the diaper 1 contracts in the longitudinal direction. In addition, elastic members 4SL, 4SR extending in the longitudinal direction and exerting a biasing force so that the diaper 1 contracts in the longitudinal direction, whose stretchable regions function as leg gathers 3AL, 3AR, are provided on the widthwise outer sides of the crotch region 1B of the diaper 1. The biasing force of these elastic members causes the longitudinal outer sides of the diaper 1 to stand up on the skin facing side.

[0035] More specifically, when the diaper 1 is stretched in the longitudinal direction at 5N for 5 seconds while spread out on a horizontal plane, the longitudinal outer side of the diaper 1 gradually rises toward the skin side due to the biasing force of each elastic member, and after 10 seconds, the end portion comes to rest in a state of rising from the horizontal plane. That is, on the longitudinal outer side of the diaper 1, when measured 10 seconds after the diaper 1 is spread out on a horizontal plane and stretched in the longitudinal direction at 5N for 5 seconds, a rising portion is formed that rises from the horizontal plane. The formation of the rising portion on the longitudinal outer side makes it easier to put on the diaper 1. In addition, as the longitudinal outer side of the diaper 1 rises, the longitudinal outer side of the absorber 6 also bends toward the skin side, making it easier to fit the wearer's skin surface.

[0036] The rising positions of the diaper 1 are two imaginary lines extending in the width direction and dividing the diaper 1 into approximately three equal parts in the longitudinal direction. The imaginary lines are boundary lines separating the respective regions when the diaper 1 is divided into a front region having a longitudinal length of 10% to 40%, for example, 15% to 30%, for example, 17% to 27%, a rear region having a longitudinal length of 10% to 40%, for example, 15% to 30%, for example, 17% to 27%, and a central region between the front region and the rear region. The diaper 1 is folded in the longitudinal direction so that the skin-facing side of the absorbent body 6 is not exposed in the pre-use state. The two imaginary lines may be a pair of bending lines in which the folding marks are left on the absorbent body 6. When the diaper 1 is spread out on a horizontal plane and subjected to a stretching force in the longitudinal direction, it is preferable that the angle formed between the horizontal defining line HR extending the central region in the longitudinal direction and the rising line connecting the longitudinal end portion and the imaginary line is 30 degrees or more and less than 90 degrees. If the rising angle exceeds 90 degrees, it will be difficult for the wearer to put the diaper on. Also, the pocket forming sheet 9P and the top As a result, the pocket portion P is not formed.

[0037] FIG. 5(A) is a diagram showing the longitudinal outside of the diaper 1 standing at a suitable angle. In FIG. 5(A), the angle R1 formed between the rising line connecting the longitudinal end of the standing diaper 1 and the imaginary line and the horizontal definition line HR is 30 degrees or more and less than 60 degrees. When the longitudinal inside of the pocket-forming sheet 9P stands up to the skin-facing side by the urging force of the elastic members 8EL, 8ER, which are rubber threads forming the three-dimensional gathers 3BL, 3BR, if the standing angle of the diaper 1 is angle R1, the volume of the pocket portion P can be increased. Furthermore, since the height of the inlet H of the pocket portion P can be kept high, the discharged liquid flowing outward in the longitudinal direction can easily flow into the pocket portion P. In this way, by setting the angle R1, which is the standing angle of the diaper 1, to 30 degrees or more and less than 60 degrees, the pocket-forming sheet 9P can form a pocket portion P that exhibits a suitable effect and suppresses the outflow of discharged liquid from the longitudinal end.

[0038] Fig. 5(B) is a diagram showing the longitudinal outer side of the diaper 1 in an example where the rising angle is insufficient. In Fig. 5(B), the angle R2 formed between the rising line connecting the longitudinal end of the diaper 1 and the imaginary line and the horizontal definition line HR is less than 30 degrees. When the longitudinal end of the diaper 1 rises at the angle R2, the rising is insufficient, and the volume of the pocket portion P is reduced. In addition, the height of the inlet H of the pocket portion P is also reduced, so that the discharged liquid flowing toward the longitudinal outer side does not enter the pocket portion P, but flows between the pocket forming sheet 9P and the skin surface of the wearer, which may cause abdominal leakage or back leakage.

[0039] FIG. 5(C) is a diagram showing the longitudinal outer side of the diaper 1 in an example where the rising angle is close to vertical. In FIG. 5(C), the angle R3 formed between the rising line connecting the longitudinal end of the rising diaper 1 and the imaginary line and the horizontal regulation line HR is 60 degrees or more. If the angle R3 is too large, the volume of the pocket portion P and the height of the inlet H of the pocket portion P become smaller than when the angle is R1. Thus, the function of the pocket portion P is not fully exhibited when the angle is too large. For this reason, it can be said that the optimal rising angle is preferably 30 degrees or more and less than 60 degrees as shown in FIG. 5(A). If the angle exceeds 90 degrees, the pocket portion P will not open at all, so that the discharged liquid will not flow into the pocket portion P and will reach the longitudinal end, causing abdominal leakage and back leakage. If the rising angle exceeds 90 degrees, putting on the diaper 1 will be more difficult. As described above, it is preferable that the standing angle of the diaper 1 at the longitudinal end portion is set to be equal to or greater than 30 degrees and less than 60 degrees, as in R1.

[0040] 6 is a view of the vicinity of an end of the diaper from the non-skin-facing side. More specifically, it is a view of the vicinity of an end of the rear body region 1R of the diaper 1 from the non-skin-facing side. A pair of elastic members 4C, whose arrangement area overlaps in the thickness direction with the high basis weight portion of the absorbent body 6, are arranged in a longitudinally stretched state on the non-skin-facing side of the diaper 1, and elastic members 4SL, 4SR whose stretchable areas function as leg gathers 3AL, 3AR are arranged further outboard of the widthwise ends of the absorbent body 6, in a longitudinally stretched state similarly to the elastic members 4C.

[0041] The longitudinal ends of the diaper 1 are raised up mainly by the force of the elastic members 8EL, 8ER arranged in the three-dimensional gathers 3BL, 3BR contracting inward in the longitudinal direction, but many members are arranged on the longitudinal outer sides of the tape-type diaper 1 to ensure wearing. For example, the front body region 1F of the diaper 1 is arranged with a front patch 2F that is strong enough to withstand multiple bonding of the hook tape. In addition, the rear body region 1R is arranged with four hook carriers 2L1, 2L2, 2R1, 2R2 having hook tapes for joining with the front patch 2F, and these members have a certain weight. Due to the weight of these members, the longitudinal ends of the diaper 1 are difficult to raise up only by the biasing force of the elastic members 8EL, 8ER.

[0042] In the diaper 1 according to this embodiment, the elastic members 4C are arranged so as to exert a contracting force in the longitudinal direction along the arrangement area of ​​the absorbent body 6. The absorbent body 6 receives the urging force of the elastic members 8EL, 8ER on the skin-facing side, and further receives the urging force of the elastic members 4C on the non-skin-facing side. In this way, by arranging the elastic members 4C in a longitudinally stretched state not only on the skin-facing side of the absorbent body 6 but also on the non-skin-facing side, it becomes possible to raise the longitudinal outer side of the diaper 1 from the horizontal plane. In addition, the elastic members 4SL, 4SR whose stretchable regions function as the leg gathers 3AL, 3AR also indirectly apply a urging force to the longitudinal outer side of the diaper 1 including the absorbent body 6, thereby playing a role in assisting the longitudinal outer side to rise.

[0043] Here, the elastic members 4C arranged on the non-skin facing side are arranged wide in the vicinity of the front body region 1F and the back body region 1R, which are on the longitudinal outer sides, and arranged narrow in the crotch region. The elastic members 4C are arranged curved inward in the width direction from the longitudinal outer sides to the crotch region.

[0044] With this arrangement, the elastic members 4C are arranged so as to overlap the high basis weight portion of the absorbent body 6, i.e., the area where the upper absorbent mat 6A and the lower absorbent mat 6B overlap, in the narrow area in the crotch region 1B. By arranging the elastic members 4C so as to overlap only the low basis weight portion of the absorbent body 6 where only the lower absorbent mat 6B extends, on the outer side in the longitudinal direction, the basis weight of the absorbent body 6 that receives the biasing force of the elastic members 4C becomes smaller and the standing resistance becomes smaller, so that the outer side in the longitudinal direction of the diaper 1 according to this embodiment stands up more effectively. In addition, in the crotch region 1B, the elastic members 4C and the high basis weight portion of the absorbent body 6 overlap in the thickness direction, so that the absorbent body 6 can sufficiently resist the biasing force received from the elastic members 4C. Therefore, the diaper 1 according to this embodiment can maintain a flat state in the crotch region 1B, and the diaper 1 does not roll up before wearing. In this manner, the diaper 1 according to this embodiment maintains the crotch region 1B in a flat state while the outer longitudinal sides are raised, so that no unnecessary stretching operation is required when wearing the diaper.

[0045] In addition, in this figure, one of two imaginary lines VL extending in the width direction and dividing the diaper 1 into three equal parts in the longitudinal direction is indicated by a dotted line. In order to protect the skin-contacting surface and maintain the skin-contacting feel, the diaper 1 is folded in thirds before use so that the skin-facing side on the outer side in the longitudinal direction contacts the skin-facing side on the inner side in the longitudinal direction at the two imaginary lines VL. The imaginary line VL is the crease of the third fold, and the bend in the absorbent body 6 at the imaginary line VL functions as a starting point for the longitudinal outer side of the diaper 1 to rise to the skin-facing side.

[0046] The elastic member 4C extends beyond the imaginary line VL outward in the longitudinal direction. The elastic member 4C is provided with a stretchable end 4CE in the vicinity of the imaginary line VL on the longitudinal outer side of the imaginary line VL. The stretchable end 4CE is a longitudinal end of the elastic member 4C that maintains a stretched state. The elastic member 4C also extends further outward in the longitudinal direction than the stretchable end 4CE, but outside the longitudinal direction of the stretchable end 4CE, the elastic member 4C extends in a natural state and does not exert a contractile force.

[0047] Although the elastic members 4C are disposed in the longitudinal direction beyond the imaginary line VL while exerting a contractile force, their stretchable ends 4CE are disposed in the vicinity of the imaginary line VL. When the elastic members 4C exert a contractile force so that the longitudinal outer sides of the diaper 1 stand up from the imaginary line VL, the contractile force is exerted mainly on the crotch side of the imaginary line VL. In this manner, by configuring the elastic members 4C to exert a contractile force in the section up to the vicinity of the longitudinal outer sides of the imaginary line VL, the longitudinal outer sides of the diaper 1 are more likely to stand up from the imaginary line VL.

[0048] The stretchable ends 4CE of the elastic member 4C are overlapped with the stretchable ends of the elastic members 4SL and 4SR for forming the leg gathers 3AL and 3AR. , 4SR have a common elastic end. The longitudinal outer sides of the diaper 1 are wider than the crotch side, and similarly, the absorbent body 6 is also wider. Furthermore, the rear body region of the diaper 1 is provided with hook carriers 2L1, 2L2, 2R1, 2R2, each having a hook tape arranged thereon, and is heavier than the front body region. For this reason, the rear body region of the diaper 1 is less likely to stand up solely due to the biasing force of the elastic members 8EL, 8ER, which are provided on the skin-facing side and not shown in FIG. 6.

[0049] In this embodiment, the stretchable end 4CE of the elastic member 4C and the stretchable ends of the elastic members 4SL, 4SR for forming the leg gathers 3AL, 3AR are common, and a strong urging force inward in the longitudinal direction can be obtained from both elastic members. By adding the urging forces of the elastic members 4C and 4SL, 4SR which urge the diaper 1 inward in the longitudinal direction on the outer side in the width direction to the elastic members 8EL, 8ER which urge the diaper 1 inward in the longitudinal direction on the inner side in the width direction, the rear body region of the diaper 1 can be made to stand up, and by the rear body region standing up from the bending line formed on the imaginary line VL, the pocket portion P can also be correctly formed in the rear body region 1R.

[0050] In addition, as shown in the figure, when an imaginary intermediate line is drawn in the longitudinal direction at the widthwise center between the widthwise outer edge of the absorbent body 6 and the hook carrier, the stretchable end 4CE is disposed on the hook carrier side of the imaginary intermediate line. In FIG. 6, the imaginary intermediate line is indicated by a dashed line. The hook carriers 2L1, 2L2, 2R1, and 2R2 are formed of heavy and strong materials so as not to break when worn. In the diaper 1 shown in this embodiment, since a plurality of hook carriers are disposed on one widthwise side, the weight of the diaper 1 becomes even heavier. For this reason, the rear body region 1R is unlikely to stand up due to the biasing force of the elastic members 8EL and 8ER. Furthermore, since the hook carriers 2L1, 2L2, 2R1, and 2R2 are provided at the widthwise end portions of the diaper 1, the biasing force of the elastic members 8EL and 8ER that stand up the diaper 1 is unlikely to affect them. Even if the rear body region 1R of the diaper 1 stands up, the widthwise ends of the diaper 1 where the hook carriers 2L1, 2L2, 2R1, 2R2 are arranged do not stand up in tandem and tend to sag.

[0051] In this embodiment, when an imaginary middle line is drawn extending in the longitudinal direction in the widthwise center between the widthwise outer edge of the absorbent body 6 and the widthwise outer edge of the exterior body, the stretchable end 4CE is located on the widthwise outer side of the imaginary middle line. Note that, since the hook carriers 2L1, 2L2, 2R1, and 2R2 are located on the widthwise outer edge of the exterior body, in other words, when an imaginary middle line is drawn extending in the longitudinal direction in the widthwise center between the widthwise outer edge of the absorbent body 6 and the hook carrier, the stretchable end 4CE is located on the hook carrier side of the imaginary middle line.

[0052] By arranging the stretchable end 4CE on the widthwise outer edge side of the exterior body, i.e., on the hook carrier side, sufficient biasing force due to the elastic member 4C and the elastic members 4SL and 4SR can be applied to the hook carriers 2L1, 2L2, 2R1, and 2R2. With this configuration, the back body region 1R as a whole tends to stand up.

[0053] This figure shows the configuration of the elastic end 4CE on the back body region 1R side, but the elastic end 4CE on the front body region 1F side may have a similar configuration. Since a wide front patch 2F is arranged on the front body region 1F side, by arranging the elastic end CE on the front body region 1F side similar to that on the back body region 1R side, the rise can be made more stable.

[0054] FIG. 7 is a diagram showing the force applied to the diaper by the elastic members in the vicinity of the imaginary line. In the vicinity of the imaginary line VL, which is the base point for the rise of the non-skin-facing side of the diaper 1, elastic members 4C are provided on both sides in the width direction, folding outward in the width direction. When the diaper 1 is worn, a force resulting from the contraction force of the elastic members 4C is applied in the vicinity of the imaginary line VL. In the vicinity of the imaginary line VL, the elastic members 4C are disposed obliquely with respect to the imaginary line VL. The force resulting from the contraction of the elastic members 4C is It can be decomposed into a force PV applied in the extension direction of the elastic member 4C and a force PH applied to the widthwise inner side of the extension region of the elastic member 4C. In Fig. 7, the force PV applied in the extension direction of the elastic member 4C and the force PH applied to the widthwise inner side of the extension region of the elastic member 4C are respectively indicated by arrows.

[0055] It is desirable that the absorbent 6 and the elastic member 4C are not overlapped in the thickness direction in the vicinity of the virtual line VL. Outside the virtual line VL in the longitudinal direction, the absorbent 6 has a low basis weight. If the elastic member 4C and the absorbent 6 overlap in the vicinity of the virtual line VL, the force PH, which is a force applied to the inner side in the width direction of the extending region of the elastic member 4C, is directly applied to the absorbent 6, so that the absorbent 6 loses its shape and bends inward in the width direction, forming a groove extending in the longitudinal direction. If the absorbent 6 loses its shape in the vicinity of the virtual line VL, the rigidity of the absorbent 6 increases in the vicinity of the virtual line VL, making it difficult to bend, and the diaper 1 becomes difficult to stand up in the rear body region 1R. Even if it does stand up, the absorbent 6 resists bending in the vicinity of the virtual line VL, so that the standing position becomes unstable at a position away from the virtual line VL. If the standing position is not stable, the pocket portion P cannot be formed correctly, and the diaper 1 will not function properly.

[0056] In this embodiment, the elastic member 4C and the absorbent 6 do not overlap in the intersection region including the region where the virtual line VL and the elastic member 4C intersect, and the rubber thread of the elastic member 4C that is closest to the absorbent 6 is arranged with a gap of 1 cm or more between it and the absorbent 6. The force PH that is applied to the widthwise inner side of the extension region of the elastic member 4C is distributed to other structures of the diaper 1 and does not directly bias the absorbent 6. Therefore, the force PH does not bend the absorbent 6 inward in the widthwise direction. In this way, even if the elastic member 4C that is folded toward the widthwise outer side is arranged near the virtual line VL, the absorbent 6 does not lose its shape, and the longitudinal outer side of the diaper 1 can maintain a state in which it is easy to stand up with the virtual line VL as the starting point. FIG. 7 is a diagram showing the rear body region 1R side, but the absorbent 6 can be correctly raised up near the virtual line VL by a similar configuration on the front body region 1F side.

[0057] FIG. 8 is a diagram showing the relationship between the absorbent body and the elastic member overlapping the absorbent body. In the crotch region 1B, the elastic member 4C overlaps with the absorbent body 6. In this embodiment, the elastic member 4C is arranged so that when imaginary lines LF and LR are drawn in the width direction at the point where the elastic member 4C starts to overlap with the absorbent body 6, the angles formed by the elastic member 4C at the overlapping portion where the elastic member 4C rides on and overlaps with the absorbent body 6 and the imaginary lines LF and LR extended parallel to the width direction so as to pass through the overlapping portion are both 45 degrees or more. If the angle formed by the elastic member 4C and the imaginary lines LF and LR is 45 degrees or less, the absorbent body 6 will shrink in the width direction due to the biasing force of the elastic member 4C. More specifically, since the elastic member 4C is curved inward in the width direction and overlaps with the absorbent body 6 in the crotch region 1B, if the angle formed by the elastic member 4C and the imaginary lines LF and LR at the overlapping portion is 45 degrees or less, the absorbent body 6 will shrink strongly in the width direction due to the biasing force of the elastic member 4C. This contraction force forms, for example, grooves extending in the longitudinal direction in the absorbent body 6. When grooves are formed in the longitudinal direction of the absorbent body 6, bending in the width direction is less likely to occur, and therefore the outer longitudinal sides of the diaper 1 are also less likely to stand up.

[0058] When the angle between the elastic member 4C and the imaginary lines LF, LR at the overlapping portion is exactly 45 degrees, the elastic member 4C is biased toward the outside in the width direction at the longitudinal outside of the overlapping portion, so that the forces acting in the longitudinal direction and the width direction on the absorbent body 6 are balanced. For this reason, bending due to the elastic member 4C is unlikely to occur in the absorbent body 6. On the other hand, as shown in this figure, when the angle between the elastic member 4C and the imaginary lines LF, LR is 45 degrees or more, the biasing force in the longitudinal direction is greater than the contraction force in the width direction that the absorbent body 6 receives at the overlapping portion, so that a force that bends the absorbent body 6 in the longitudinal direction acts instead. Since the absorbent body 6 shrinks in the longitudinal direction due to this bending force, no grooves extending in the longitudinal direction are formed, but grooves extending in the width direction are formed. It becomes easier to get sick.

[0059] In this way, by making the angles formed by the elastic member 4C and the imaginary lines LF, LR at the overlapping portions both 45 degrees or more, it is possible to form grooves extending in the width direction in the vicinity of the crotch region 1B of the diaper 1, and it is possible to prevent the formation of grooves extending in the longitudinal direction. As a result, the absorbent body 6 does not lose its shape by bending in the width direction, and the longitudinal outer sides of the diaper 1 can maintain a state in which they can easily stand up from the standing lines extending in the width direction.

[0060] Fig. 9 is a diagram showing the positional relationship between the three-dimensional gathers and the pocket-forming sheet. Fig. 9(A) is an enlarged view of the skin-facing side of the rear body region 1R of the diaper 1. The pocket-forming sheet 9P has outer elastic members 9ER and inner elastic members 9EB arranged in a stretched state in the width direction. The pocket-forming sheet 9P is joined to the top sheet 7 on the longitudinal outer side where the absorbent body 6 does not extend. The outer elastic members 9ER arranged on the longitudinal outer side are integrated with the exterior members such as the top sheet 7 and the cover sheet 4 to function as so-called waist gathers that fit the diaper 1 to the skin of the wearer.

[0061] On the other hand, the inner elastic member 9EB has a function of waist gathers like the outer elastic member 9ER, but also has a function of effectively forming the pocket portion P. That is, the inner elastic member 9EB is disposed near the inner end of the pocket forming sheet 9P in the longitudinal direction, and the pocket forming sheet 9P and the top sheet 7 are not joined in the extending region of the inner elastic member 9EB. On the other hand, on the outer side in the width direction of the pocket forming sheet 9P, the pocket forming sheet 9P is joined to the region of the side sheets 8L, 8R that is the longitudinal extension of the three-dimensional gathers 3BL, 3BR. Therefore, when the three-dimensional gathers 3BL, 3BR stand up on the skin-facing side due to the biasing force of the elastic members 8EL, 8ER, the standing up of the three-dimensional gathers 3BL, 3BR causes the inner end of the pocket forming sheet 9P in the longitudinal direction to rise up on the skin-facing side, forming the width direction end of the pocket portion P. By positioning an inner elastic member 9EB, which extends in the width direction and exerts a contractile force, in a stretched state near the inner longitudinal end of the pocket forming sheet 9P, the entire inner longitudinal side of the pocket forming sheet 9P is raised toward the skin side, forming a pocket portion P with a wide opening between it and the top sheet 7, so that discharged liquid flowing outward in the longitudinal direction can be effectively channeled into the inside of the pocket portion P and contained therein.

[0062] As shown in the figure, the elastic members 8EL, 8ER that bias the three-dimensional gathers 3BL, 3BR toward the skin side do not overlap with the pocket forming sheet 9P. Even if they overlap, the stretchable ends of the elastic members 8EL, 8ER do not overlap with the extending area of ​​the pocket forming sheet 9P, and the elastic members 8EL, 8ER overlap with the pocket forming sheet 9P in a natural state where they do not exert a contractile force. In other words, it is desirable that the stretchable range of the elastic members 8EL, 8ER does not overlap with the stretchable range of the inner elastic member 9EB.

[0063] FIG. 9(B) is a cross-sectional view showing a problem that occurs when the pocket forming sheet 9P and the elastic members 8EL, 8ER of the three-dimensional gathers 3BL, 3BR are overlapped in a state in which they can exert a contractile force. In this figure, the elastic members 8EL, 8ER are overlapped with the pocket forming sheet 9P in a state in which they can exert a contractile force, so that the elastic members 8EL, 8ER also shrink in the overlapping area with the pocket forming sheet 9P as shown. When the elastic members 8EL, 8ER shrink in the overlapping area with the pocket forming sheet 9P, the pocket forming sheet 9P wrinkles in the longitudinal direction as shown, and the volume of the pocket portion P decreases. In addition, when wrinkles are formed in the pocket forming sheet 9P that contacts the skin surface, the skin contact is reduced, and there is a risk of causing discomfort to the wearer. For this reason, it can be said that it is preferable that the pocket forming sheet 9P and the elastic members 8EL, 8ER arranged in the three-dimensional gathers 3BL, 3BR are not overlapped.

[0064] FIG. 10 is a cross-sectional view showing another example of the positional relationship between the three-dimensional gathers and the pocket forming sheet. 9. Specifically, this figure is a cross-sectional view of the diaper 1 cut in the width direction near the longitudinal inner end of the extension region of the pocket-forming sheet 9P. The absorbent core 6C of the diaper 1 has a two-layer structure, but since the upper absorbent mat 6A does not exist in the extension region of the pocket-forming sheet 9P, it has a single-layer structure consisting of only the lower absorbent mat 6B. As explained in FIG. 9, when the elastic members 8EL, 8ER of the three-dimensional gathers 3BL, 3BR exert a contraction force in the extension region of the pocket-forming sheet 9P, the pocket-forming sheet 9P contracts in the longitudinal direction due to the contraction force of the elastic members 8EL, 8ER, and it becomes impossible to form a pocket portion P of sufficient size. In FIG. 9, this problem is solved by not overlapping the stretching range of the elastic members 8EL, 8ER with the pocket-forming sheet 9P. 10, the pocket-forming sheet 9P and the three-dimensional gathers 3BL, 3BR portions of the side sheets 8L, 8R are not completely joined, and the extending areas of the elastic members 8EL, 8ER do not come into contact with the pocket-forming sheet 9P, at least when the diaper 1 is being worn. This configuration also makes it possible to avoid the problem that wrinkles are formed in the pocket-forming sheet 9P due to the biasing force of the elastic members 8EL, 8ER, reducing the volume of the pocket portion P.

[0065] The elastic members 8EL, 8ER arranged at the widthwise inner ends of the side sheets 8L, 8R rise toward the skin-facing side to form the three-dimensional gathers 3BL, 3BR. Then, on the longitudinal outer side, the widthwise outer side of the pocket-forming sheet 9P is urged toward the skin-facing side as the three-dimensional gathers 3BL, 3BR rise, and rises toward the skin-facing side. An inner elastic member 9EB joined in a stretched state in the width direction is arranged at the crotch-side end of the pocket-forming sheet 9P, and by transmitting the raised state that occurs on both sides in the width direction to the widthwise inner side, the entire crotch side rises toward the skin-facing side, forming a pocket portion P into which discharged liquid can effectively flow.

[0066] However, the inner elastic members 9EB provided on the pocket forming sheet 9P bias the side sheets 8L, 8R inward in the width direction, which may hinder the standing of the three-dimensional gathers 3BL, 3BR. To solve this problem, when the three-dimensional gathers 3BL, 3BR are folded, the stretchable range of the inner elastic member 9EB can be made not to overlap with the elastic members 8EL, 8ER provided at the ends of the three-dimensional gathers 3BL, 3BR. Outside the stretchable range, the inner elastic member 9EB may be in a natural state where it does not exert a biasing force, or may not extend. With this configuration, the biasing force of the inner elastic member 9EB does not directly affect the elastic members 8EL, 8ER, which are rubber threads, arranged in the three-dimensional gathers 3BL, 3BR, so the three-dimensional gathers 3BL, 3BR can stand up without being affected by the biasing force of the inner elastic member 9EB.As a result, the standing up of the three-dimensional gathers 3BL, 3BR is not hindered, and the crotch side end of the pocket forming sheet 9P can be stood up toward the skin side in response to the standing up of the three-dimensional gathers 3BL, 3BR, and a pocket portion P that can contain discharged liquid can be formed.

[0067] In addition, even if the three-dimensional gathers 3BL, 3BR overlap the stretching range of the inner elastic member 9EB when folded, the three-dimensional gathers 3BL, 3BR portions of the side sheets 8L, 8R may not be completely joined to the pocket forming sheet 9P. More specifically, the extending portions of the elastic members 8EL, 8ER may not be joined to the pocket forming sheet 9P. If the extending regions of the elastic members 8EL, 8ER are not completely joined to the pocket forming sheet 9P, the three-dimensional gathers 3BL, 3BR can rise to the skin side without directly receiving the urging force of the inner elastic member 9EB. If the three-dimensional gathers 3BL, 3BR rise to the skin side in the extending region of the pocket forming sheet 9P, the crotch side end of the pocket forming sheet 9P can also rise to the skin side by the urging force of the inner elastic member 9EB, and a pocket portion P that can contain discharged liquid can be formed.

[0068] 11 is a diagram showing the relationship between the thickness of the absorbent body at the longitudinal end and the pocket portion. As already described, in this embodiment, the absorbent body 6 is made up of a rectangular upper-layer absorbent mat 6A that is mainly arranged in the crotch region 1B, and a rectangular upper-layer absorbent mat 6B that is arranged over the entire extension region of the absorbent body 6. The absorbent body 6 has a two-layer structure having a substantially hourglass-shaped lower absorbent mat 6B, and only the lower absorbent mat 6B extends to the ends of the absorbent body 6 in the longitudinal direction.

[0069] As shown in Fig. 4, Fig. 9(A), etc., the upper absorbent mat 6A is arranged so that its longitudinal end is located on the longitudinal inside of the imaginary line VL which functions as the starting point when the longitudinal outside of the diaper 1 rises up. Therefore, the absorbent body 6 overlapping with the extending area of ​​the pocket-forming sheet 9P is only the lower absorbent mat 6B. In addition, in the area overlapping with the imaginary line VL, the upper absorbent mat 6A is not present in the absorbent body 6, and the rigidity is low. Therefore, the diaper 1 is easily bent toward the skin side starting from the imaginary line VL.

[0070] Furthermore, since the upper absorbent mat 6A is not present in the region overlapping with the pocket portion P, the absorbent body 6 is biased toward the non-skin facing side in the region overlapping with the pocket portion P. By biasing the absorbent body 6 toward the non-skin facing side, it is possible to increase the volume of the pocket portion P formed between the pocket forming sheet 9P and the top sheet 7. Furthermore, when this configuration is adopted, a step is formed in the absorbent body 6 outside the region where the pocket portion P is formed. Although discharged liquid held inside the pocket portion P at one end may flow back over the surface of the absorbent body 6, causing discomfort to the wearer, the presence of a step in the absorbent body 6 suppresses the backflow, thereby reducing the discomfort felt by the wearer.

[0071] In this way, by providing a pocket-forming sheet 9P on the longitudinal outer side of the diaper 1 and arranging a plurality of elastic members so that the diaper 1 is bent toward the skin side at a longitudinal inner portion of the longitudinal inner end of the pocket-forming sheet 9P, it is possible to form a large pocket portion P on the longitudinal outer side of the diaper 1. By providing the pocket portion P on the longitudinal outer side of the diaper 1 according to this embodiment, discharged liquid flowing longitudinally outward can be caused to flow into the inside of the pocket portion P and be retained therein, and abdominal leakage and back leakage can be suppressed depending on the arrangement area of ​​the pocket-forming sheet 9P.

[0072] Although the present embodiment has been described above, the contents of the present invention are not limited to the above embodiment. For example, the absorbent 6 can have a compressed groove formed by compression processing and extending in the longitudinal direction in the crotch region 1B. By providing the compressed groove, the absorbent 6 is compressed in the thickness direction, so that the absorbent 6 has high rigidity in the region where the compressed groove is arranged, and can resist the contraction force of each elastic member. On the other hand, the rigidity of the front body region 1F and the rear body region 1R where the compressed groove is not arranged can be kept low, so that the diaper 1 can be easily bent toward the skin side in the front body region 1F and the rear body region 1R by the biasing force of each elastic member, making it easy to put on. In addition, the diaper 1 according to the present embodiment can form a large pocket portion P by appropriately bending the front body region 1F and the rear body region 1R, so that abdominal leakage and back leakage of discharged liquid can be suppressed depending on the arrangement of the pocket forming sheet 9P.

[0073] In addition, while the above embodiment has been described with reference to a tape-type diaper, the present disclosure can also be applied to an inner pad, which is an absorbent article that is inserted inside an undergarment or a diaper. If the longitudinal end of the inner pad is raised, it becomes very easy to put on.

[0074] The embodiments and application examples thereof disclosed above can be combined with each other. [Explanation of symbols]

[0075] 1. Diapers 1B...Inseam area 1F: Front body area 1R: Back body area 2F: Front patch 2L1, 2L2, 2R1, 2R2 Hook carrier 3AL, 3AR Leg Gathers 3BL, 3BR: 3D gathers 30L,30R··Joint part 31L, 31R · Standing part 32L, 32R · Standing line 33L,33R・Fixed part 4. Cover sheet 4C, 4SL, 4SR, 8EL, 8ER, 9E, 9EB, 9ER Elastic material 5. Back sheet 6. Absorber 6C··Absorbent core 6A··Upper layer absorbent mat 6B··Lower layer absorbent mat 6W··Core wrap sheet 7. Top sheet 8L, 8R side seats 9P Pocket forming sheet P Pocket 9EB··Inner elastic member 9ER: Outer elastic member 10L, 10R: Leg area PV, PH··force VL, LF, LR Virtual lines

Claims

1. A length along a longitudinal direction corresponding to the front-to-back direction of the wearer; A length along a width direction perpendicular to the longitudinal direction; An absorbent for absorbing the discharged liquid; An exterior body that brings the absorbent body close to the skin surface of a wearer; a skin-facing sheet having liquid permeability and arranged on a skin-facing side of the absorbent body; a pair of leak-proof sheets arranged on the outer side in the width direction from the center in the width direction, the inner side in the width direction standing up toward the skin side at a joint end extending in the longitudinal direction to form a leak-proof wall, and a first elastic member bonded to the inner side in the width direction in a stretched state in the longitudinal direction; a second elastic member that is arranged in a wide manner on the outer side in the longitudinal direction, and in a narrow manner in a crotch region that corresponds to the crotch of a wearer when worn, and that curves inward in the width direction from the outer side in the longitudinal direction to the crotch region, and that is arranged in a stretched state in the longitudinal direction so as to overlap with the absorbent body in the thickness direction in the crotch region, and has an elastic end that does not overlap with the absorbent body; a third elastic member having a common elastic end with the second elastic member, the third elastic member being disposed in a stretched state in the longitudinal direction, and being located widthwise outward of the second elastic member; To be equipped with Absorbent articles.

2. In at least the rear body region on the outer side in the longitudinal direction, stretchable ends of the second elastic member and the third elastic member are disposed widthwise outside of an imaginary midline extending in the longitudinal direction when the imaginary midline is drawn in the center of the width direction between the widthwise outer edge of the exterior body and the widthwise outer edge of the absorbent body. The absorbent article of claim 1.

3. a pocket forming sheet which overlaps the skin-facing side of the skin-facing sheet at least in the rear body region among the outer sides in the longitudinal direction, is disposed between the skin-facing sheet and the leak-barrier sheet in the arrangement region of the leak-barrier sheet, is not joined to the skin-facing sheet on the inner side in the longitudinal direction but is joined to the leak-barrier sheet, and is joined to both the skin-facing sheet and the leak-barrier sheet on the outer side in the longitudinal direction; When the absorbent body is spread on a horizontal plane and stretched in the longitudinal direction at a pressure of 5 N for 5 seconds in a region overlapping with the pocket forming sheet on the outer side of the longitudinal direction, and measured 10 seconds later, a rising portion rises from the horizontal plane; To be equipped with The absorbent article of claim 1.

4. When the standing portion stands up from a horizontal plane, an angle between the longitudinal end of the standing portion and the horizontal plane is equal to or greater than 30 degrees and less than 90 degrees. The absorbent article of claim 3.

5. When the standing portion stands up from a horizontal plane, the angle between the end of the standing portion in the longitudinal direction and the horizontal plane is less than 60 degrees. The absorbent article of claim 4.

6. A pair of bend lines extending in the width direction are provided on the outer side of the absorbent body in the longitudinal direction, The stretchable ends of the second elastic member are disposed on the outer sides of the pair of bending lines in the longitudinal direction. The absorbent article according to claim 1 or 2.

7. In the intersecting region between the pair of bending lines and the second elastic member, the absorbent body and the second elastic member The elastic members are not overlapped in the thickness direction. The absorbent article of claim 6.

8. The pocket forming sheet and the first elastic member provided on the leak-proof sheet do not overlap each other in their stretchable ranges. The absorbent article of claim 3.

9. The absorbent body is A lower absorbent body disposed over the entire area of ​​the extending range of the absorbent body; An upper absorbent body arranged on the inner side in the longitudinal direction of the extending range of the absorbent body; The extending range of the upper absorbent body and the extending range of the pocket forming sheet do not overlap in the thickness direction. The absorbent article of claim 3.

10. The second elastic member is curved inward in the width direction and overlaps the absorbent body at an overlapping portion, The angle between the second elastic member and a virtual line extending parallel to the width direction so as to pass through the overlapping portion is 45 degrees or more. An absorbent article according to any one of claims 1 to 5.

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