Absorbent articles

Abstract

To provide an absorbent article that can prevent a leak of liquid.SOLUTION: An absorbent article has an absorber, a skin-side sheet, a liquid-impermeable side sheet for forming three-dimensional gathers, a pocket sheet forming a pocket part, and an elastic member bonded to the pocket sheet in an extended state, so as to extend and contract in a width direction. In the pocket sheet placement region, at least part of the area outside in a width direction from a virtual extension line passing through an end of an absorber in the width direction and extending in a longitudinal direction has a shrinkage rate higher than that of the area inside in the width direction from the virtual extension line.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to absorbent articles.

Background Art

[0002] Absorbent articles that absorb liquids such as urine and body fluids are known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, absorbent articles are provided with three-dimensional gathers in order to suppress leakage of the liquid discharged by the wearer from the width direction. The three-dimensional gathers prevent a gap from being formed between the skin surface of the wearer and the absorbent article by causing a sheet having liquid impermeability to rise toward the skin surface side by the elastic force of the elastic member, thereby suppressing leakage of the liquid. However, the three-dimensional gathers suppress leakage of the liquid from the widthwise end portions of the absorbent article, but cannot suppress leakage of the liquid from the longitudinal end portions of the absorbent article. There is a problem that there is a risk of liquid leakage from the longitudinal end portions of the absorbent article.

[0005] An object of the present invention is to provide an absorbent article capable of suppressing liquid leakage.

Means for Solving the Problems

[0006] In order to solve the above problems, in the present invention, an elastic member is disposed on a pocket sheet that forms a pocket portion.

[0007] Specifically, the present invention relates to an absorbent article having a length along its longitudinal direction and a width along a width direction perpendicular to the longitudinal direction, which is worn between the legs of a wearer, comprising: an absorbent body; a liquid-permeable skin-side sheet disposed on the skin-side of the absorbent body; a liquid-impermeable side sheet for forming three-dimensional gathers, which is disposed on the outer side of the width direction; and a liquid-impermeable pocket sheet disposed on the skin-side of the side sheet at the longitudinal end, which is bonded to the side sheet at the end in the width direction, and bonded to the skin-side sheet on the longitudinal outer side, and on the longitudinal inner side The device comprises a pocket sheet forming a pocket portion with an open side, and an elastic member bonded to the pocket sheet in an extended state so as to expand and contract in the width direction, wherein on both sides in the width direction, the pocket sheet and the elastic member extend beyond the absorbent, and in the longitudinal direction, the end of the absorbent is positioned inside the skin-facing sheet and the end of the pocket sheet, and in the area where the pocket sheet is positioned, at least a portion outside the width direction from a virtual extension line passing through the end of the absorbent in the width direction and extending in the longitudinal direction has a greater shrinkage rate than the portion inside the width direction from the virtual extension line.

[0008] In the absorbent article described above, the absorbent article has a front body region located on the abdominal side of the wearer, a crotch region located in the crotch area, and a back body region located on the back side, arranged in this order along the longitudinal direction when worn. The absorbent article has a fastening portion attached to the outer surface of either the front body region or the back body region, to which a fastening portion for fixing the absorbent article to the wearer is attached, and the absorbent article has protruding portions on both sides in the width direction of either the other of the front body region or the back body region, and the absorbent article is worn while attached to the fastening portion. The device comprises a fastening portion for securing it around the person's waist, and the fastening portion may be located on the same longitudinal end side as the pocket sheet.

[0009] In the absorbent article described above, the longitudinal end may be the end on the back panel side.

[0010] In the absorbent article described above, the side sheet has an elastic region on which an elastic member that expands and contracts in the longitudinal direction is arranged, a free end which is the end that stands upright on the skin side due to the elastic member, a base end which is adhered to the skin side sheet on the width side of the elastic region, a fixed end which is arranged on the longitudinal side so as to be continuous with the base end and is adhered to the skin side sheet, and a non-fixed end which is arranged on the width side of the fixed end and is arranged on the longitudinal side so as to be continuous with the elastic region, and the pocket portion may overlap with the non-fixed end. [Effects of the Invention]

[0011] According to the present invention, leakage of liquid can be suppressed. [Brief explanation of the drawing]

[0012] [Figure 1] Figure 1 is a perspective view of a diaper according to an embodiment. [Figure 2] Figure 2 is an exploded perspective view of a diaper according to this embodiment. [Figure 3] Figure 3 is a cross-sectional view of a diaper according to the embodiment. [Figure 4] Figure 4 is a plan view of the diaper according to the embodiment, as seen from the skin-facing side. [Figure 5] Figure 5 is a cross-sectional view of a diaper according to this embodiment. [Modes for carrying out the invention]

[0013] A diaper according to an embodiment of the present invention will be described below with reference to the drawings. Note that the configurations of the following embodiments are illustrative, and the present invention is not limited to these embodiments.

[0014] <Embodiment> In this embodiment, for a tape-type disposable diaper (an example of an "absorbent article" as defined in this application, and hereinafter simply referred to as "diaper"), the direction connecting the front panel positioned opposite the wearer's abdomen and the back panel positioned opposite the wearer's back is defined as the longitudinal direction. Between these front panel (one side in the longitudinal direction) and back panel (the other side in the longitudinal direction) (in the center in the longitudinal direction) lies the inseam section, positioned between the wearer's legs (opposite the crotch). Furthermore, when the diaper is worn by the wearer (hereinafter abbreviated as "wearing state"), the side facing the wearer's skin (inside in the wearing state) is defined as the skin side, and the side opposite the skin side (outside in the wearing state) is defined as the non-skin side. In addition, the direction connecting the skin side and the non-skin side is defined as the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is defined as the width direction. Moreover, viewing from the thickness direction is defined as a plan view. Diaper 1 has a length along its longitudinal direction and a width along a width direction perpendicular to its longitudinal direction, and is worn between the legs of the wearer.

[0015] Figure 1 is a perspective view of a diaper according to this embodiment. The diaper 1 has a crotch area 1B which is the part of the crotch that covers the wearer's genitals when worn, a front body area 1F which is located in front of the crotch area 1B and is the part of the wearer's front body, and a back body area 1R which is located behind the crotch area 1B and is the part of the wearer's back body. Tapes 2L and 2R (an example of "fastening parts" in this application) are provided on the left and right edges of the back body area 1R which can be attached to a front patch 2F (an example of "fastening part" in this application) provided on the non-skin side (non-wearer side) of the front body area 1F. The diaper 1 is positioned with the front body area 1F on the wearer's abdominal side and the back body area 1R on the wearer's back side, and the tapes 2L and 2R are attached to the front When attached to Topatch 2F, it is secured to the wearer's body, encircling their waist and thighs. Because diaper 1 is secured to the wearer's body in this manner, the wearer can stand and walk while wearing diaper 1.

[0016] Diaper 1 has an absorbent material that can absorb and retain liquids, mainly located around the crotch area 1B. In addition, to prevent the formation of gaps between diaper 1 and the wearer's skin that could become pathways for liquid leakage, leg gathers 3AL and 3AR are provided around the wearer's legs (thighs), three-dimensional gathers 3BL and 3BR are provided further inward in the width direction of diaper 1 than the leg gathers 3AL and 3AR, and a waist gather 3R is provided around the wearer's waist. The leg gathers 3AL and 3AR, three-dimensional gathers 3BL and 3BR, and waist gather 3R adhere closely to the wearer's skin due to the elastic force of the elastic material. Therefore, liquids discharged from the wearer's genitals are absorbed into the absorbent material of diaper 1 without leaking out. The elastic material can be appropriately selected from thread-like or band-like rubber, etc.

[0017] Figure 2 is an exploded perspective view of diaper 1. Figure 3 is a cross-sectional view of diaper 1 in its non-wearing state, when cut along the width direction from the center of the longitudinal direction. Diaper 1 has a cover sheet 4 that forms the outer surface. The cover sheet 4 is a sheet-like member with a roughly rectangular appearance, having constrictions 4KL and 4KR in the parts corresponding to the long sides, and forms the outer surface of diaper 1. The constrictions 4KL and 4KR are provided in the parts where the wearer's thighs are located. The cover sheet 4 is provided to reinforce the back sheet 5, which will be described later, and to improve the feel. For example, to suppress leakage of excrement, a nonwoven fabric made of a liquid-impermeable thermoplastic resin can be used as its material. 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 also be a multilayer structure having an inner cover sheet and an outer cover sheet.

[0018] The diaper 1 has a backsheet 5 (an example of the "non-skin-side sheet" in the present application), an absorber 6, and a topsheet 7 (an example of the "skin-side sheet") that are sequentially laminated on the surface of the cover sheet 4 on the skin side (wearer side). The backsheet 5, the absorber 6, and the topsheet 7 are all sheet-like members having a substantially rectangular appearance, and are sequentially laminated on the cover sheet 4 in a state where the longitudinal direction coincides with the longitudinal direction of the cover sheet 4. The backsheet 5 is a sheet formed of a liquid-impermeable thermoplastic resin as a material, like the cover sheet 4, to suppress leakage of excrement. The backsheet 5 is preferably composed of a material having moisture permeability in order to suppress stuffiness in the worn state. Further, the topsheet 7 is a sheet-like member disposed on the skin side of the wearer so as to cover the water-absorbing surface of the absorber 6. This topsheet 7 has liquid permeability in part or all of it. Therefore, in the state where the diaper 1 is worn, the liquid excreted from the wearer enters the absorber 6 through the topsheet 7 that can contact the wearer's skin and is absorbed there. For example, woven fabric, non-woven fabric, and porous film can be used as the material of the topsheet 7. The topsheet 7 may have hydrophilicity.

[0019] The backsheet 5, the absorber 6, and the topsheet 7 all extend from the front crotch region 1F to the back crotch region 1R. Therefore, when the crotch of the wearer is covered with the cover sheet 4 on which the backsheet 5, the absorber 6, and the topsheet 7 are laminated, both end portions in the longitudinal direction of the backsheet 5, the absorber 6, and the topsheet 7 are in a state of being located on the ventral side and the dorsal side of the wearer. That is, the crotch of the wearer is in a state of being covered by the absorber 6 from the ventral side to the dorsal side of the wearer. Therefore, no matter whether the wearer discharges the liquid out of the body in a posture with the abdomen facing downward or a posture with the back facing downward, the discharged liquid will contact the absorber 6 through the topsheet 7.

[0020] Further, the diaper 1 has an elastic member 4 for forming the above-described leg gathers 3AL, 3AR The SL and 4SR are provided so as to stretch in the longitudinal direction of the diaper 1 between the cover sheet 4 and the back sheet 5. The elastic members 4SL and 4SR are provided in an appropriate number (three in this embodiment) determined according to the elastic force (contracting force) required in the design of the diaper 1 and the like. As shown in FIG. 4 to be described later, the leg gathers 3AL and 3AR are arranged including the leg circumference region which is the part where the wearer's thighs are located on both side ends in the width direction of the crotch region 1B of the diaper 1.

[0021] Further, the diaper 1 has elongated strip-shaped side sheets 8L and 8R. The side sheets 8L and 8R are sheets for forming the three-dimensional gathers 3BL and 3BR provided at the long side portions of the top sheet 7, and are sheets having liquid impermeability (hydrophobicity). The side sheets 8L and 8R are arranged outside the center in the width direction of the diaper 1. Similar to the cover sheet 4, constrictions 8KL and 8KR are provided at the parts where the wearer's thighs are located on the side sheets 8L and 8R. And elastic members 8EL and 8ER for forming the three-dimensional gathers 3BL and 3BR are arranged along the longitudinal direction on the side sheets 8L and 8R. When the diaper 1 is in the worn state, that is, when the diaper 1 is in a U-shaped form in side view, the side sheets 8L and 8R are pulled in the longitudinal direction by the contracting force of the elastic members 8EL and 8ER and rise from the top sheet 7 to become the three-dimensional gathers 3BL and 3BR that prevent the outflow of liquid. Thus, the three-dimensional gathers 3BL and 3BR are three-dimensionally formed from the top sheet 7 toward the skin surface side (wearer side).

[0022] Note that an elastic member 4C for preventing a gap from being formed between the diaper 1 and the wearer's abdominal circumference is provided along the longitudinal direction of the diaper 1 inside the width direction of the diaper 1 with respect to the elastic members 4SL and 4SR. The elastic member 4C is provided according to the elastic force (contracting force) required in the design of the diaper 1 and the like.

[0023] Furthermore, a pocket sheet 20 for forming a pocket is positioned on the back body region 1R side of diaper 1. The pocket sheet 20 has a double-layered sheet structure formed by folding a single sheet material. The pocket sheet 20 is positioned on the skin side of the side sheets 8L and 8R and is impermeable to liquids (hydrophobic). The pocket sheet 20 spans both side sheets 8L and 8R. The pocket sheet 20 is bonded to the side sheets 8L and 8R at the end of diaper 1 in the width direction.

[0024] Furthermore, the elastic member 9ER (an example of an "elastic member" as used in this application) for forming the waist gather 3R described above is located further back than the end of the absorbent body 6, within the double-sheet structure of the pocket sheet 20, and is positioned where the non-skin side of the pocket sheet 20 is bonded to the top sheet 7. The elastic member 9ER is positioned so that its longitudinal direction, which is the direction of stretching, is the width direction (left-right direction) of the diaper 1. Therefore, when the tapes 2L and 2R provided on both the left and right sides of the elastic member 9ER are attached to the front patch 2F on the wearer's abdominal side, the elastic member 9ER exerts a contractile force to make the diaper 1 adhere tightly to the wearer, preventing the formation of a gap between the diaper 1 and the wearer's waist circumference. In this embodiment, the elastic member 9ER is a thread-like rubber, and four of them are provided.

[0025] Furthermore, the elastic member 22ER (an example of an "elastic member" as used in this application) is located within the double-layered sheet structure of the pocket sheet 20, and is positioned in a location where the non-skin side of the pocket sheet 20 is not adhered to the top sheet 7. The elastic member 22ER is positioned so that its longitudinal direction, which is the direction of stretching and contracting, is in the width direction (left-right direction) of the diaper 1. The elastic member 22ER exerts a contracting force to make the pocket sheet 20 adhere tightly to the wearer, preventing the formation of a gap between the pocket sheet 20 and the wearer's back. In this embodiment, the elastic member 22ER is a thread-like rubber, and five of them are provided.

[0026] The absorbent material 6 is made of cellulose fibers such as pulp fibers, rayon fibers, or cotton fibers. The absorbent material has a structure in which granular absorbent resin, such as SAP (Super Absorbent Polymer), a hydrophilic polymer with a cross-linked structure capable of absorbing and retaining water, is held in the gaps between fibers that have been hydrophilically treated, such as fibers, polyethylene, polypropylene, or polyethylene terephthalate. Therefore, in the absorbent material 6, the volume change of the absorbent resin before and after absorbing liquid basically occurs within the short fibers that hold the absorbent resin in the gaps. Consequently, looking at the absorbent material 6 as a whole, it can be said that the expansion rate of the thickness of the absorbent material 6 after absorbing liquid is not as large as the expansion rate of the absorbent resin itself.

[0027] In this embodiment, SAP particles refer to a resin composition containing SAP that has been made into granules. The term "resin composition containing SAP" here is a concept that encompasses both compositions consisting solely of SAP and compositions in which SAP is the main component and other substances are added to an extent that does not adversely affect water absorption. Examples of "other substances" include additives (such as surface modifiers added to hydrophobicize the particle surface) and unreacted monomers remaining after the synthesis of SAP.

[0028] Figure 4 is a plan view of the stretched diaper 1 as seen from the skin side. Note that the elastic members 4C, 4SL, and 4SR are not shown in Figure 4. As shown in Figure 4, the side sheets 8L and 8R for forming the three-dimensional gathers 3BL and 3BR have elastic regions 10L and 10R where elastic members 8EL and 8ER that expand and contract in the longitudinal direction of the diaper 1 are arranged, and free ends 11L and 11R which are the ends that stand up on the skin side due to the elastic members 8EL and 8ER. The elastic regions 10L and 10R are the regions from the elastic members 8EL and 8ER to the base ends 12L and 12R, which will be described later. Note that the longitudinal direction of the elastic regions 10L and 10R and the free ends 11L and 11R coincides with the longitudinal direction of the diaper 1.

[0029] Furthermore, the side sheets 8L and 8R have base ends 12L and 12R that are bonded to the top sheet 7 at the widthwise end side of the elastic regions 10L and 10R. The base ends 12L and 12R form the upright lines when the elastic regions 10L and 10R rise towards the skin side. The longitudinal direction of the base ends 12L and 12R coincides with the longitudinal direction of the diaper 1.

[0030] Furthermore, the side sheets 8L and 8R have fixed ends 13L and 13R that are arranged to be continuous with the base ends 12L and 12R at both longitudinal ends of the diaper 1. The fixed ends 13L and 13R are bonded to the top sheet 7 and are positioned further towards the longitudinal ends of the diaper 1 than the base ends 12L and 12R.

[0031] Furthermore, the side sheets 8L and 8R have non-fixed ends 14L and 14R that are arranged to be continuous with the elastic regions 10L and 10R at both longitudinal ends of the diaper 1. The non-fixed ends 14L and 14R are located further inward in the width direction of the diaper 1 than the fixed ends 13L and 13R. No elastic members are placed at the non-fixed ends 14L and 14R, and these are regions where no elastic force is generated by the elastic members. Note that elastic members 8EL and 8ER may extend to the non-fixed ends 14L and 14R without being adhered to them. Even in this case, no elastic force is generated at the non-fixed ends 14L and 14R by the elastic members 8EL and 8ER.

[0032] In diaper 1, the elastic regions 10L and 10R are raised by the force of the elastic members 8EL and 8ER contracting toward the center in the longitudinal direction. At this time, the elastic force of the elastic members 8EL and 8ER is also transmitted to the non-fixed ends 14L and 14R, causing the non-fixed ends 14L and 14R to rise toward the skin side, with the fixed ends 13L and 13R as the boundary. In this way, the fixed ends 13L and 13R become the lines of uprightness when the non-fixed ends 14L and 14R rise toward the skin side. As a result, in diaper 1 according to this embodiment, at both ends in the longitudinal direction where elastic members 8EL and 8ER for the three-dimensional gathers 3BL and 3BR are not provided, the non-fixed ends 14L and 14R rise toward the skin side, The non-fixed ends 14L and 14R prevent liquid leakage. Specifically, the non-fixed ends 14L and 14R receive the moisture contained in urine and feces (moisture in watery stools), suppressing liquid leakage. As a result, the diaper 1 according to this embodiment can suppress liquid leakage.

[0033] Furthermore, in this embodiment, the lengths of the elastic regions 10L and 10R and the non-fixed ends are approximately the same in the width direction of the diaper 1. Since the non-fixed ends 14L and 14R, which are on the extension of the elastic regions 10L and 10R, have substantially the same width as the elastic regions 10L and 10R, the force exerted by the elastic members 8EL and 8ER pulling the elastic regions 10L and 10R inward in the longitudinal direction is efficiently transmitted to the non-fixed ends 14L and 14R. This makes it easier for the non-fixed ends 14L and 14R of the diaper 1 to be raised towards the skin side.

[0034] In this embodiment, the three-dimensional gathers 3BL and 3BR can be seen as being composed of elastic regions 10L and 10R, free ends 11L and 11R, base ends 12L and 12R, fixed ends 13L and 13R, and non-fixed ends 14L and 14R.

[0035] Furthermore, as shown in Figure 4, a pocket sheet 20 for forming a pocket is positioned on the back body region 1R side of the diaper 1.

[0036] Figure 5 is a cross-sectional view of diaper 1 when cut along line AA in Figure 4. The pocket sheet 20 is bonded to the top sheet 7 on the longitudinal outer side (back side) of diaper 1, forming a pocket portion 21 with an opening on the longitudinal inner side (crotch side). The pocket portion 21 is provided to prevent liquid from leaking from the wearer's back side (back body region 1R side).

[0037] The base end (innermost part) 21E of the pocket portion 21 is positioned dorsally to the end of the absorbent material 6. The pocket portion 21 prevents liquid that flows outward in the longitudinal direction from the end of the absorbent material 6 from leaking from the dorsal side. As a result, the diaper 1 according to this embodiment can suppress liquid leakage from the back body region 1R side (dorsal side). In plan view, since the pocket portion 21 is positioned overlapping with the liquid-impermeable backsheet 5, liquid accumulated in the pocket portion 21 does not leak from the non-skin side.

[0038] Furthermore, as shown in Figure 6, the pocket sheet 20 has a double-layered sheet structure, folded over on the longitudinal outer and longitudinal inner sides of the diaper 1. Within the pocket portion 21, the non-adherent portion of the pocket sheet 20 is further folded over from the pocket base end 21E, and the adhesive portion with the top sheet 7 is exposed inside the pocket portion 21. This makes it easier to open the opening side of the pocket portion 21.

[0039] Here, the pocket portion 21 overlaps with the non-fixed ends 14L and 14R on the back body region 1R side. As described above, when the diaper 1 is worn, the non-fixed ends 14L and 14R stand up on the skin side. As the non-fixed ends 14L and 14R stand up on the skin side, the pocket sheet 20 on the pocket portion 21 also stands up on the skin side. This allows the diaper 1 to open the opening side of the pocket portion 21, making it easier to introduce liquids discharged by the wearer into the pocket portion 21. Generally, three-dimensional gathers are required to be in close contact with the skin in order to suppress lateral leakage that occurs when the top sheet separates from the skin at the crotch area of ​​the diaper 1. Therefore, three-dimensional gathers are not required to stand up on the skin side at the longitudinal ends of the diaper, i.e., the ventral and dorsal sides. In the diaper 1 according to this embodiment, the non-fixed ends 14L and 14R are made to stand up on the skin side in order to open the pocket portion 21 even at the dorsal side, which is the longitudinal end. As a result, the diaper 1 according to this embodiment can suppress leakage of liquid from the back.

[0040] Furthermore, as shown in Figure 4, pocket sheets 20 are placed on both sides of the width direction of diaper 1. The elastic members 9ER and 22ER extend beyond the absorbent body 6. Also, as shown in Figures 4 and 5, in the longitudinal direction of the diaper 1, the ends of the absorbent body 6 are positioned inside the ends of the top sheet and the pocket sheet 20. In the arrangement area of ​​the pocket sheet 20 of the diaper 1 configured in this way, at least a portion of the area outside the virtual extension line KL that extends longitudinally through the ends of the absorbent body 6 in the width direction has a greater shrinkage rate than the portion inside the virtual extension line KL in the width direction.

[0041] Because the absorbent material 6, which is formed by incorporating pulp, has greater rigidity than sheet materials such as the top sheet 7 and back sheet 5, the area inward in the width direction of the diaper 1 from the virtual extension line KL is affected by the absorbent material 6 and shrinks less, making it easier to maintain a flat state. In contrast, in the area outward in the width direction of the diaper 1 from the virtual extension line KL, the area is less affected by the rigidity of the absorbent material 6 and shrinks more. As a result, the pocket sheet 20 is pulled inward in the area outward in the width direction and stands upright in the thickness direction, making it easier for the opening of the pocket portion 21 to open.

[0042] Furthermore, in this embodiment, as described above, the garment includes a front patch 2F which is attached to the outer surface of the front body region 1F and to which tapes 2L and 2R for securing the diaper 1 to the wearer are attached, and tapes 2L and 2R which are provided protruding from both sides in the width direction of the back body region 1R and for securing the diaper 1 around the wearer's waist when attached to the front patch 2F. The tapes 2L and 2R have hooks on the skin-facing side which engage with loops formed on the surface of the front patch 2F.

[0043] In this embodiment, tapes 2L and 2R are positioned at the same back body region 1R side end as the pocket sheet 20. That is, the pocket sheet 20, which has tapes 2L and 2R and elastic members 9ER and 22ER, is positioned at the same longitudinal end of the diaper 1. With this configuration, the diaper 1 can be easily widened between tapes 2L and 2R by the expansion and contraction of the elastic members 9ER and 22ER when worn. As a result, the diaper 1 according to this embodiment is easy to put on.

[0044] <Other Embodiments> Next, other embodiments will be described. In the embodiments described above, tape-type disposable diapers were used as an example, but the present invention is not limited thereto, and can also be applied to absorbent articles such as pant-type disposable diapers and absorbent pads.

[0045] Furthermore, in the above embodiment, the fixed ends 13L, 13R and the non-fixed ends 14L, 14R are provided at both ends in the longitudinal direction of the diaper 1 (front body region 1F and back body region 1R), but they may also be provided at either end in the longitudinal direction.

[0046] Furthermore, in the above embodiment 2, the pocket sheet 20 is located in the back body region 1R, but it may also be located in the front body region 1F, or in both the front body region 1F and the back body region 1R. Also, if the pocket sheet 20 is located on the back body region 1R side, the tapes 2L and 2R are located on the back body region 1R side, and the front patch 2F is located on the front body region 1F side. On the other hand, if the pocket sheet 20 is located on the front body region 1F side, the tapes 2L and 2R are located on the front body region 1F side, and the front patch 2F is located on the back body region 1R side.

[0047] Furthermore, in the above embodiment, the top sheet 7 is composed of one layer of sheet material, but the present invention is not limited thereto. For example, the top sheet 7 may be composed of two or more layers of sheet material. For example, when the top sheet 7 is composed of two layers of sheet material, the side sheets 8L and 8R may be bonded to the lower sheet material, or bonded to both sheet materials. It's fine if they're wearing it.

[0048] The absorbent core 6 may also be wrapped in a core wrap sheet. The core wrap sheet is a permeable sheet made of nonwoven fabric formed from pulp fibers such as tissue paper or thin resin fibers, and it covers the entire absorbent core 6, maintaining the shape of the absorbent core 6 and preventing SAP particles from scattering to other structures. Since the core wrap sheet is permeable to water, it does not hinder the movement of urine from the skin side to the absorbent core 6.

[0049] The embodiments and variations disclosed above can be combined in any way. [Explanation of symbols]

[0050] 1. Diaper 1B...Inseam area 1F ··Front bodice area 1R · Back panel area 2F Front Patch 2L, 2R Tape 3BL, 3BR ··3D Gathered 3R Waist Gather 4. Cover Sheet 4KL, 4KR... constricted 4C, 4SL, 4SR, 8EL, 8ER, 9ER, 22ER... Elastic members 5. Back seat 6. Absorbent 7. Top sheet 8L, 8R... Side seats 10L, 10R... Elastic range 11L,11R··Free end 12L,12R··Proximal end 13L,13R·Fixed end 14L,14R...Non-fixed end 20 pocket seats 21. Pocket section 21E...Pocket base

Claims

1. An absorbent article having a length along its longitudinal direction and a width along a width direction perpendicular to the longitudinal direction, which is worn between the legs of the wearer, absorbent material, A liquid-permeable skin-side sheet is placed on the skin-side side of the absorbent, A side sheet for forming three-dimensional gathers that is impermeable to liquid, comprising a side sheet positioned outside the center in the width direction, A liquid-impermeable pocket sheet positioned on the skin-facing side of the side sheet at its longitudinal end, wherein the pocket sheet is bonded to the side sheet at its width end, the longitudinal outer side of the absorbent body is bonded to the skin-facing sheet, and the longitudinal inner side is open, forming a pocket portion. A first elastic member is bonded to the pocket sheet in an extended state so as to expand and contract in the width direction, Equipped with, On both sides in the width direction, the pocket sheet and the first elastic member extend beyond the absorber. In the longitudinal direction, the ends of the absorbent material are positioned inside the skin-facing sheet and the ends of the pocket sheet. In the area where the pocket sheet is placed, at least a portion of the area outside the width direction from the virtual extension line that passes through the end of the absorbent in the width direction and extends in the longitudinal direction has a greater shrinkage rate than the portion inside the width direction from the virtual extension line. Multiple first elastic members are bonded to the portion of the pocket sheet that is not bonded to the skin-facing sheet, in a state where they are stretched in the width direction. The plurality of the first elastic members are provided in the longitudinal direction from a position overlapping the absorber to a position not overlapping the absorber, The pocket sheet is folded over on the longitudinal outer side and the longitudinal inner side, and the adhesive portion between the pocket sheet and the skin-side sheet is exposed into the pocket portion. Absorbent material.

2. The absorbent article, when worn, has a front panel area located on the wearer's abdominal side, a crotch area located in the crotch area, and a back panel area located on the back side, arranged in this order along the longitudinal direction. A fastening portion is attached to the outer surface of either the front or back body region, and a fastening portion for securing the absorbent article to the wearer is attached to the fastening portion, The fastening portion is provided on both sides in the width direction of either the front or back body region, and is for securing the absorbent article around the wearer's waist while attached to the fastening portion, Equipped with, The fastening portion is located on the same longitudinal end side as the pocket sheet. The absorbent article according to claim 1.

3. The aforementioned longitudinal end is the end on the back panel side. The absorbent article according to claim 2.

4. The aforementioned side sheet is An elastic region in which the second elastic member that expands and contracts in the longitudinal direction is arranged, The free end, which is the end that stands upright on the skin side by the second elastic member, A base end that is adhered to the skin-side sheet on the widthwise end side of the elastic region, A fixed end that is arranged to be continuous from the base end on the longitudinal end side, and the fixed end is adhered to the skin-side sheet, A non-fixed end is positioned inward in the width direction from the fixed end and is positioned to be continuous with the elastic region on the longitudinal end side, It has, The aforementioned pocket portion overlaps with the non-fixed end. The absorbent article according to any one of claims 1 to 3.

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