WO2024135625A1 - Absorbent pad - Google Patents

Abstract

An absorbent pad (1) that is detachably attached to a holder (11) that is worn around the waist of a wearer in the shape of a ring. The absorbent pad (1) has, in an end section in the longitudinal direction (X), pad-side fastening structures (8) that can be attached to and detached from the holder (11). The pad-side fastening structures (8) extend continuously or discontinuously in the lateral direction (Y). In the absorbent pad (1), the length along the longitudinal direction (X) from the inner edge in the longitudinal direction (X) of the pad-side fastening structure (8) located in one end section in the longitudinal direction (X) to one longitudinal direction end of the absorbent pad (1) is longer than the length along the longitudinal direction (X) from the inner edge in the longitudinal direction (X) of the pad-side fastening structure (8) located in the other end section in the longitudinal direction (X) to the other longitudinal direction end of the absorbent pad (1).

Description

Absorbent pads

The present invention relates to an absorbent pad that is removably attached to a holder that is attached around the waist of the wearer.

A type of absorbent article, such as a disposable diaper, is known that is a separate type that includes an absorbent pad that absorbs and retains urine and other bodily fluids, and a holder that is worn in a ring shape around the wearer's waist and holds the absorbent pad in the wearer's crotch area, with the absorbent pad being detachable from the holder.

For example, Patent Document 1 describes a pants-type diaper that has a belt member that is attached around the wearer's waist and an absorbent body that can be attached and detached to the belt member, and fasteners are attached to both side edges of the front and rear ends of the absorbent body.

Patent Document 2 describes a waist belt that is fixed around the waist of a wearer and a disposable absorbent structure that is attached to the waist belt, with attachment means provided on both side edges of the longitudinal end region of the absorbent structure.

Patent Document 3 describes a diaper cover for bedridden persons that has a waist belt that is fixed around the waist of the wearer and a waterproof sheet member. The document also describes that hook-and-loop fasteners are attached to both side edges at both front and rear ends of a hanging belt provided on the waterproof sheet, so that the waterproof sheet is removably attached to the waist belt.

JP 2004-329590 A US2004/0186456A1 Japanese Utility Model Application Publication No. 5-18518

The present invention relates to an absorbent pad which comprises a top sheet which is positioned closer to the wearer's skin when worn, a back sheet which is positioned farther from the wearer's skin, and an absorbent body positioned between the two sheets, has a vertical direction and a horizontal direction perpendicular thereto, and is used by being removably fixed to a holder which is worn in a ring shape around the waist of the wearer.
In one embodiment, it is preferable that each end region in the longitudinal direction has a fastening structure that allows the holder to be attached and detached.
In one embodiment, it is preferred that the fastening structure extends continuously or discontinuously in the lateral direction.
In one embodiment, it is preferable that the length along the vertical direction from the inner vertical edge of the fastening structure located in one of the vertical end regions to the one vertical end of the absorbent pad is longer than the length along the vertical direction from the inner vertical edge of the fastening structure located in the other vertical end region to the other vertical end of the absorbent pad.
In one embodiment, the end region having the smaller length is preferably positioned on the ventral side of the wearer and the end region having the larger length is preferably positioned on the dorsal side of the wearer.
Other features, advantages and embodiments of the present invention are described below.

FIG. 1 is a perspective view showing one embodiment of an absorbent pad of the present invention. FIG. 2 is a plan view showing a schematic view of the skin-facing side (top sheet side) of the absorbent pad shown in FIG. 1 in a maximum extended state. 3(a) to (c) are cross-sectional views showing schematic cross sections along the horizontal and thickness directions at specific positions of the absorbent pad shown in FIG. 2, where FIG. 3(a) is a cross-section taken along line II in FIG. 2, FIG. 3(b) is a cross-section taken along line II-II in FIG. 2, and FIG. 3(c) is a cross-section taken along line III-III in FIG. 2. 4A and 4B are enlarged schematic plan views of the longitudinal end regions of the absorbent pad shown in FIG. 2, with FIG. 4A showing the ventral side portion and FIG. 4B showing the dorsal side portion. FIG. 5 is a diagram showing an example of use of the absorbent pad shown in FIG. 1, and is a perspective view of a disposable diaper including a holder and the absorbent pad attached thereto. FIG. 6 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 6(a) shows the ventral side portion and FIG. 6(b) shows the dorsal side portion. FIG. 7 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 7(a) shows the ventral side portion and FIG. 7(b) shows the dorsal side portion. FIG. 8 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 8(a) shows the ventral side portion and FIG. 8(b) shows the dorsal side portion. FIG. 9 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 9(a) shows the ventral side portion and FIG. 9(b) shows the dorsal side portion. FIG. 10 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 10(a) shows the ventral side portion and FIG. 10(b) shows the dorsal side portion. FIG. 11 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 11(a) shows the ventral side portion and FIG. 11(b) shows the dorsal side portion. FIG. 12 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 12(a) shows the ventral side portion and FIG. 12(b) shows the dorsal side portion. FIG. 13 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 13(a) shows the ventral side portion and FIG. 13(b) shows the dorsal side portion. FIG. 14 is a plan view (corresponding to FIG. 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where FIG. 14(a) shows the ventral side portion and FIG. 14(b) shows the dorsal side portion. Figure 15 is a plan view (corresponding to Figure 4) showing an enlarged schematic view of the longitudinal end region of another embodiment of the absorbent pad of the present invention, where Figure 15(a) shows the ventral side and Figure 15(b) shows the dorsal side.

Detailed Description of the Invention

In the case where a wide area of the vertical end region of the absorbent pad is fastened to the holder, when a wearer wearing a separate type absorbent article moves by standing up, sitting, etc., movement around the legs on the abdominal side may be hindered. In order to prevent such inconvenience, as described in Patent Documents 1 to 3, for example, if a pad-side fastening structure that is detachable from the fastening structure of the holder is disposed only on both side edges of the absorbent pad, narrowing the area of the absorbent pad that can be fastened to the holder, this eliminates the hindrance of movement on the abdominal side, but there is a risk that excrement will pass between the pad-side fastening structures and leak out from the back side of the absorbent pad.
Therefore, the present invention relates to an absorbent pad that is worn while being removably fixed to a holder, which maintains a comfortable fit on the ventral side without interfering with the wearer's leg movements, and which prevents the leakage of excrement on the dorsal side.

The present invention will now be described based on a preferred embodiment thereof with reference to the drawings. In the following description of the drawings, the same or similar parts are given the same or similar reference numerals. The drawings are basically schematic, and the ratios of the dimensions may differ from the actual ones.

Figures 1 to 4 show an absorbent pad 1, which is one embodiment of the absorbent pad of the present invention. Figure 5 shows a disposable diaper 10 as an absorbent article, which includes the absorbent pad 1 and a holder 11 that holds it on a wearer, as an example of the use of the absorbent pad of the present invention. As shown in Figure 5, the diaper 10 is formed by connecting the absorbent pad 1 and the holder 11 via a pad-side fastening structure 8 and a holder-side fastening structure 14, and has a waist opening WH of the holder 11 and a pair of leg openings LH, LH defined by the lower end of the holder 11 in the height direction HD and both side edges along the longitudinal direction (vertical direction X described below) of the absorbent pad 1. Note that the holder 11 is not a component of the absorbent pad 1.

The diaper 10, which is a separate type absorbent article, reduces the burden on the environment compared to conventional non-separate type absorbent articles because the absorbent pad 1 and the holder 11 can be freely connected and separated via the fastening structures 8, 14. That is, when a conventional non-separate type absorbent article in which a part corresponding to the wearer's waist (a part corresponding to the holder) and a part corresponding to the wearer's crotch (a part corresponding to the absorbent pad) are inseparably integrated, is disposed of after use, even if the part corresponding to the holder is not soiled, it has to be disposed of together with the part corresponding to the absorbent pad that is soiled with excrement. However, with the diaper 10 of the present embodiment, the holder 11 can be continued to be used as is, and only the absorbent pad 1 needs to be replaced with a new one, so that the amount of waste disposal and carbon dioxide emissions are reduced compared to non-separate type absorbent articles, and this contributes to reducing the burden on the environment.
In addition, since the absorbent pad 1 is removably fixed to the holder 11 while the diaper 10 is being worn, the absorbent pad 1 can be easily replaced with a new one, and the burden of replacing the diaper 10 is significantly reduced compared to conventional non-separate type absorbent articles.

The absorbent pad 1 is used by being detachably fixed to a holder 11 that is attached in a ring shape around the waist of a wearer. Here, the holder 11 will be briefly described with reference to Fig. 5. The holder 11 is attached in a ring shape around the waist of a wearer and holds the absorbent pad 1 in a state where it is attached to the wearer, and has a height direction HD along the height direction of the wearer and a circumferential direction CD along the waist direction. The holder 11 has a ventral side portion 11F arranged on the ventral side (front side) of the wearer and a back side portion 11R arranged on the back side (rear side) of the wearer, and is provided with a holder main body portion 12 that constitutes the main body of the holder 11. The holder main body portion 12 is mainly composed of a sheet-like member such as a nonwoven fabric, and is typically composed of a laminated structure of an outer layer sheet that forms a non-skin-facing surface (outer surface) of the holder main body portion 12 and an inner layer sheet that forms a skin-facing surface (inner surface) of the holder main body portion 12. The holder 11 is annular in shape, with both longitudinal ends of the holder body 12 of each of the abdominal portion 11F and the back portion 11R joined together by known joining means such as fusion or adhesive, and has a pair of joining parts S, S between the abdominal portion 11F and the back portion 11R, and a waist opening WH. The joining parts S correspond to side seal parts in a general non-separate type pants-type disposable diaper. The holder body 12 of each of the abdominal portion 11F and the back portion 11R has a plurality of elastic members 13 arranged intermittently in the height direction HD so as to be stretchable in a direction perpendicular to the height direction HD, thereby making the holder 11 stretchable in the circumferential direction CD. A holder side fastening structure 14 is arranged on the non-skin facing surface (outer surface) of the holder body 12, and the absorbent pad 1 can be detachably fastened to the holder 11 by fastening the pad side fastening structure 8 of the absorbent pad 1 to the holder side fastening structure 14.
Since the holder 11 does not include an absorbent that absorbs and retains moisture, if washable materials are used as components of the holder main body 12, the holder 11 can be washed and reused. The fact that the holder 11 is washable leads to a reduction in the amount of waste and carbon dioxide emissions, and can contribute to reducing the burden on the environment.
It should be noted that holder 11 is merely one embodiment of a holder to which the absorbent pad of the present invention can be applied, and the holder to which the absorbent pad of the present invention can be applied may have a holder-side fastening structure that can be fastened to the pad-side fastening structure of the absorbent pad, and is not limited to holder 11. For example, the holder to which the absorbent pad of the present invention can be applied may be annular when attached to the body, and may be annular in advance like holder 11, or may be a long strip before being attached to the body, and may be annular when attached by engaging one end and the other end in the longitudinal direction.

In this specification, the term "skin-facing surface" refers to the surface of a worn article such as an absorbent article, holder, or absorbent pad, or a component thereof (e.g., the absorbent body of an absorbent pad), which faces the skin of the wearer when the worn article is worn, and the term "non-skin-facing surface" refers to the surface of the worn article or a component thereof, which faces the side opposite the skin when the worn article is worn.

The absorbent pad 1 will now be described in detail.
The absorbent pad 1 comprises a top sheet 3 located closer to the wearer's skin when worn, a back sheet 4 located farther from the wearer's skin, and an absorbent body 5 located between the sheets 3, 4, and has a vertical direction X and a horizontal direction Y perpendicular thereto. The vertical direction X of the absorbent pad 1 corresponds to the front-to-rear direction passing through the crotch of the wearer and also corresponds to the height direction HD of the holder 11, and the horizontal direction Y of the absorbent pad 1 corresponds to the circumferential direction CD of the holder 11.

As shown in Fig. 2, the absorbent pad 1 has a crotch portion M arranged in the crotch portion of the wearer, a ventral portion F arranged on the ventral side (front side) of the wearer relative to the crotch portion M, and a back portion R arranged on the back side (rear side) of the wearer relative to the crotch portion M. The crotch portion M is located in the center of the absorbent pad 1 in the vertical direction X, and includes an excretory portion facing portion (not shown) that faces an excretory portion such as the penis of the wearer when worn. As shown in Fig. 5, when the absorbent pad 1 is properly fastened to the holder 11, the ventral portion F of the absorbent pad 1 includes a portion overlapping the ventral portion 11F of the holder 11, and the back portion R of the absorbent pad 1 includes a portion overlapping the back portion 11R of the holder 11, but the crotch portion M of the absorbent pad 1 does not overlap the holder 11.
In this embodiment, the absorbent pad 1 has a rectangular shape in a plan view in the unfolded and maximally extended state as shown in Fig. 2, and is formed symmetrically on one side and the other side with respect to a lateral center line CLy. The lateral center line CLy is an imaginary straight line extending in the vertical direction X, dividing the absorbent pad 1 in the unfolded and maximally extended state as shown in Fig. 2 in half in the lateral direction Y.

In this specification, "unfolded and maximum stretched state" refers to a state in which a worn article such as an absorbent article, holder, or absorbent pad is spread out flat to an unfolded state, and the elastic members of each part of the worn article in the unfolded state are stretched to their maximum extent until they are the same as the designed dimensions, i.e., the dimensions when unfolded flat with all influence of the elastic members eliminated. In the case of an absorbent article having a side seal portion, such as the joint portion S of the holder 11 described above, the absorbent article is separated at the side seal portion and spread out flat to the unfolded state.

In this embodiment, the absorbent pad 1 comprises an absorbent body 2 including a top sheet 3, a back sheet 4 and an absorbent body 5, a pair of first leakproof cuffs 6, 6 arranged along both sides in the vertical direction X of the absorbent body 2, and a pair of second leakproof cuffs 7, 7 arranged in both end regions in the vertical direction X of the absorbent body 2. The "vertical end regions" refer to the end regions in the vertical direction X when the absorbent pad 1 is divided into thirds in the vertical direction X.

The absorbent body 2 is the main body of the absorbent pad 1 and has the function of absorbing and retaining excrement such as urine. In this embodiment, the absorbent body 2 has a long shape in the vertical direction X, and extends in the vertical direction X from the ventral side part F to the dorsal side part R with its longitudinal direction aligned with the vertical direction X. The top sheet 3 forms the skin-facing surface of the absorbent body 2 and can come into contact with the wearer's skin when worn. The back sheet 4 forms the non-skin-facing surface of the absorbent body 2. The top sheet 3 contacts the skin-facing surface of the absorbent body 5 and covers its entire area, and the back sheet 4 contacts the non-skin-facing surface of the absorbent body 5 and covers its entire area. The absorbent body 5 is composed of an absorbent core 51 capable of absorbing and retaining bodily fluids, and a core wrap sheet 52 that covers the outer surface including the skin-facing surface and non-skin-facing surface of the absorbent core 51. In the present invention, the absorbent body 5 only needs to include at least the absorbent core 51, and the core wrap sheet 52 is not necessary. The multiple members 3, 4, and 5 that make up the absorbent body 2 are joined together by known joining means such as adhesives.

As the constituent members of the absorbent body 2, those which are usually used in this type of absorbent article can be used without any particular limitation.
A liquid-permeable sheet can be used as the top sheet 3, and examples thereof include nonwoven fabrics produced by various manufacturing methods, perforated nonwoven fabrics which are nonwoven fabrics having through-holes, uneven nonwoven fabrics in which an uneven shape is imparted to at least one surface of the nonwoven fabric, and perforated films which are resin films having through-holes. The top sheet 3 may have a single-layer structure, or a laminate structure in which one or more types of layers are laminated.
The back sheet 4 may be a liquid-impermeable or liquid-slightly permeable or water-repellent sheet, and examples thereof include nonwoven fabric, resin film, and laminates of resin film and nonwoven fabric.
The absorbent core 51 typically contains a water-absorbing material as a main component, and contains one or more types of water-absorbing material selected from a fiber material such as wood pulp and a water-absorbing polymer. The water-absorbing material may be uniformly distributed throughout the absorbent core 51, or may be unevenly distributed in a predetermined direction such as the longitudinal direction X, the transverse direction Y, or the thickness direction. The absorbent core 51 may be a stacking type mainly made of a fiber material, or a sheet type including a fiber sheet and water-absorbing polymer particles fixed thereto. The stacking type absorbent core can be manufactured, for example, by using a known stacking device equipped with a stacking drum. The sheet type absorbent core has a configuration in which water-absorbing polymer particles are interposed between two opposing fiber sheets. The core wrap sheet 52 has liquid permeability and is typically made of paper, nonwoven fabric, or the like.
The absorbent body 5 may have a recess having an opening on at least one of the skin-facing surface and the non-skin-facing surface. The recess may be, for example, a leak-proof groove having an opening on the skin-facing surface of the absorbent body 5. The absorbent body 5 may have a partially different density, and in this case, the relatively high-density portion may be a portion formed by a compression process such as embossing.

2 and 3, the first leakproof cuff 6 includes a first leakproof sheet 60 which constitutes the main body of the first leakproof cuff 6, and a first elastic member 61 which is fixed to the first leakproof sheet 60 and is stretchable in the vertical direction X. The first leakproof sheet 60 forms a part of the skin-facing surface of the absorbent pad 1. The first leakproof sheet 60 is folded back in the horizontal direction Y, and the first elastic member 61 is disposed between the opposing first leakproof sheets 60, 60 by the folding back. The first leakproof cuff 6 (first leakproof sheet 60) is disposed continuously along the side portion of the absorbent main body 2 along the vertical direction X over substantially the entire length of the absorbent main body 2 in the vertical direction X. Thus, the absorbent pad 1 has the first leakproof cuffs 6, 6 which extend in the vertical direction X on both sides of the absorbent pad 1.
The first leakproof cuff 6 has, at least in the crotch portion M, a standing portion 62 that stands toward the wearer's skin when the absorbent pad 1 (diaper 10) is worn. The standing portion 62 stands toward the wearer's skin from a fixed portion 63 as a standing point. The standing portion 62 is a portion of the first leakproof sheet 60 that is not fixed to another member. The fixed portion 63 is a portion where the first leakproof sheet 60 is fixed to another member by a known joining means such as an adhesive or fusion, and in the illustrated embodiment, the other member is the topsheet 3.
At both end regions of the first leakproof cuff 6 in the longitudinal direction X, there are formed rise-inhibiting portions 64, which are portions where the rise of the first leakproof sheet 60 is inhibited. The rise-inhibiting portions 64 are formed at the ventral portion F and the dorsal portion R, and the portion of the first leakproof cuff 6 along the longitudinal direction X sandwiched between the rise-inhibiting portions 64, 64 is the rise-inhibiting portion 62. The rise-inhibiting portion 64 is a portion of the first leakproof sheet 60 at the same position in the transverse direction Y as the rise-inhibiting portion 62, which is joined to another member such as the top sheet 3 and/or a portion of the first leakproof sheet 60 other than the rise-inhibiting portion 62 by a known joining method such as an adhesive or fusion. In this embodiment, as shown in FIG. 3, the rise-inhibiting portion 64 is formed by joining a side region on the outer side in the transverse direction Y of the rise-inhibiting portion 62 of the first leakproof cuff 6 to a leg cuff 65 facing the side region. A pair of rising inhibition parts 64, 64 are formed at both end regions in the longitudinal direction X of the first leakage preventing cuff 6, so that when the absorbent pad 1 (diaper 10) is worn, the rising part 62, which is a part of the first leakage preventing cuff 6 sandwiched between the rising inhibition parts 64, 64, rises towards the wearer's skin with the fixing part 63 as the rising starting point due to contraction of the first elastic member 61. This prevents excrement such as urine excreted by the wearer from leaking outward in the lateral direction Y from the absorbent pad 1, which is known as lateral leakage.
As the first leak-proof sheet 60, any material used as a leak-proof cuff in this type of absorbent article can be used without any particular restriction, and for example, a single-layer or multi-layer water-repellent nonwoven fabric, a laminate of a resin film and a nonwoven fabric, etc. can be used. As the first elastic member 61, any material used as an elastic member in this type of absorbent article can be used without any particular restriction. Examples of the material include synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, elastic polyolefin, polyurethane, etc. Examples of the shape of the elastic member include thread-like (thread rubber, etc.) and string-like (flat rubber, etc.). When a thread-like elastic member is used, its cross section can be, for example, rectangular, square, circular, polygonal, etc. When a thread-like elastic member is used, the elastic member may be a monofilament type or a multifilament type. Furthermore, there is no particular restriction on the number of first elastic members 61 arranged, and it may be one or more.

In this embodiment, as shown in FIG. 3, leg cuffs 65 are provided at the leg edges of the absorbent pad 1 that correspond to the wearer's legs. The leg edges typically include both side edges along the vertical direction X of the absorbent pad 1 in the crotch portion M. The leg cuffs 65 are configured to include a first leakproof sheet 60 constituting the first leakproof cuff 6 and an elastic member 66 for forming the leg cuffs. More specifically, of both side edges along the vertical direction X of the first leakproof sheet 60, one (the inner edge) is the above-mentioned standing portion 62, and the other (the outer edge) is fixed to other members (the top sheet 3 and the back sheet 4 in this embodiment) outside the horizontal direction Y of the absorbent body 5, and the elastic member 66 for forming the leg cuffs extending in the vertical direction X is fixed to the fixing portion of the first leakproof sheet 60 with the other member so as to be stretchable in the same direction, thereby forming the leg cuffs 65. The leg cuff forming elastic members 66 are arranged at least at the side edges of the absorbent pad 1 along the longitudinal direction X in the crotch portion M. When the absorbent pad 1 is worn or in its natural state, the contraction of the leg cuff forming elastic members 66 forms substantially continuous leg gathers in the longitudinal direction X at the leg edges.

2 and 4, the second leakproof cuff 7 includes a second leakproof sheet 70 which constitutes the main body of the second leakproof cuff 7, and a second elastic member 71 which is fixed to the second leakproof sheet 70 and is stretchable in the lateral direction Y. The second leakproof sheet 70 forms at least a part of the skin-facing surface of the ventral part F or the dorsal part R of the absorbent pad 1. The second leakproof sheet 70 and the second elastic member 71 may be the same as those of the first leakproof sheet 60. The absorbent pad 1 of this embodiment has second leakproof cuffs 7, 7 which extend in the lateral direction Y in the end region of the ventral part F and the end region of the dorsal part R, respectively.
In this embodiment, the configuration of the second leakage preventing cuff 7 is the same in the ventral portion F and the dorsal portion R, and unless otherwise specified, the description of the second leakage preventing cuff 7 in one of the ventral portion F and the dorsal portion R also applies, as appropriate, to the other second leakage preventing cuff 7.

In this embodiment, the second leakproof sheet 70 has a rectangular shape in a plan view and covers almost the entire area of the skin-facing surface of the end region in the vertical direction X of the absorbent body 2. As shown in FIG. 4, the vertical outer end 70A located outside the vertical direction X of both ends of the second leakproof sheet 70 in the vertical direction X coincides with the vertical end (vertical end on the ventral side F side or the dorsal side R side) of the absorbent body 2 on which the second leakproof sheet 70 is arranged, and both ends 70Y, 70Y in the horizontal direction Y of the second leakproof sheet 70 are near both ends in the horizontal direction Y of the absorbent body 2 (both side edges along the vertical direction X). That is, in this embodiment, the vertical outer end 70A of the second leakproof sheet 70 coincides with the vertical outer end edge 1X of the absorbent pad 1, and the horizontal end 70Y of the second leakproof sheet 70 is near the horizontal outer end (side edge along the vertical direction X) 1Y of the absorbent pad 1. Of the two ends of the second leak-proof sheet 70 in the vertical direction X, the vertical inner end 70B located on the inside of the vertical direction X extends parallel to the horizontal direction Y.

As shown in Fig. 4, the second leakproof sheet 70 has a fixed portion 72 (hatched area in Fig. 4) that is fixed to another member, and a non-fixed portion 75 that is not fixed to another member. The "other member" to which the second leakproof sheet 70 is fixed is a member that is disposed opposite the second leakproof sheet 70, such as the top sheet 3 or the first leakproof sheet 60. The second leakproof sheet 70 and the other member are joined by a fixing means 79, for example, as shown in Fig. 3(a). The arrangement area of the fixing means 79 is the same as the fixing portion 72 (hatched area in Fig. 4). There are no particular limitations on the fixing means 79, and known fixing means such as adhesives and fusion can be used.
The fixing portion 72 includes a continuous fixing portion 73 in which the fixing portion between the second leakproof sheet 70 and other members extends continuously over the entire length of the absorbent body 2 in the horizontal direction Y, and a discontinuous fixing portion 74 located inward in the vertical direction X from the continuous fixing portion 73 and adjacent to the continuous fixing portion 73, in which the fixing portion between the second leakproof sheet 70 and other members exists intermittently in the horizontal direction Y, and in the discontinuous fixing portion 74, a non-fixed portion 75 is located between a pair of fixing regions P adjacent to each other in the horizontal direction Y.

The continuous fixed portion 73 is an area in which the second leakproof sheet 70 is substantially fixed to another member over its entire length in the lateral direction Y, and does not include an area having a certain degree or more of area that is intentionally formed as a non-fixed portion, such as the discontinuous fixed portion 74.

As described above, in the fixing portion 72, the second leakproof sheet 70 and other members are fixed by the fixing means 79, but the arrangement pattern of the fixing means 79 in the continuous fixing portion 73 is not particularly limited. For example, if the fixing means 79 is an adhesive, the fixing means 79 may be applied to the entire continuous fixing portion 73 (so-called solid coating), or may be applied intermittently to the continuous fixing portion 73.

To describe the discontinuous fixed portion 74 in more detail, in this embodiment, the first leakproof sheet 60 and the second leakproof sheet 70 are joined only in the area of the discontinuous fixed portion 74 where they overlap in a plan view, forming a fixed region P. A non-fixed portion 75 is located between the pair of fixed regions P, P. The position of the inner side edge in the lateral direction Y of the fixed region P, i.e., the position of the side edge in the lateral direction Y of the non-fixed portion 75, coincides with the position of the inner side edge in the lateral direction Y of the first leakproof cuff 6.

As shown in Fig. 4, a second elastic member 71 extending in the horizontal direction Y is arranged to be stretchable in the horizontal direction Y at an end in the vertical direction X (an inner end in the vertical direction X) of the second leak-proof sheet 70 on the vertical inner end 70B side. In the present embodiment, the second elastic member 71 is arranged to straddle a pair of fixed regions P, P and a non-fixed portion 75 between them in the horizontal direction Y, but the arrangement pattern of the second elastic member 71 is not particularly limited in the present invention. For example, in the embodiment shown in Fig. 4, the second elastic member 71 may be arranged only in an area overlapping with the non-fixed portion 75 in a plan view, and may not extend into a pair of fixed regions P, P on both sides of the non-fixed portion 75 in the horizontal direction Y. Alternatively, the fixed region P may not be arranged in an area overlapping with the second elastic member 71 and its virtual extension line in a plan view (an area at the same position as the second elastic member 71 in the vertical direction X).
The number of second elastic members 71 arranged is not particularly limited, and may be one or more. In this embodiment, the inner end portion in the longitudinal direction X of the second leakproof sheet 70 is folded back toward the skin-facing side or the non-skin-facing side of the second leakproof sheet 70, and two second elastic members 71 are arranged between the opposing second leakproof sheets 70, 70 formed by the folding back.
When the absorbent pad 1 is worn or in its natural state, the contraction of the second elastic member 71 causes the non-fixed portion 75 of the second leak-proof sheet 70 to stand up toward the wearer's skin, and an internal space 76 (see Figure 3(b)) is formed between the standing non-fixed portion 75 and another member (such as the absorbent main body 2) facing it, and a pocket portion 78 (see Figure 1) is formed having an opening 77 that opens inward in the vertical direction X.
When the absorbent pad 1 (diaper 10) is worn, if excrement excreted in the crotch portion M of the absorbent pad 1 transfers to the ventral portion F or dorsal portion R, the excrement transferring from the crotch portion M is received in the internal space 76 of the pocket portion 78 through the opening 77 and does not transfer to the holder 11 to which the absorbent pad 1 is attached. Therefore, by providing the pocket portion 78 on the absorbent pad 1, the inconvenience of excrement adhering to the holder 11 is prevented, and the usable period of the holder 11 is extended.

The absorbent pad 1 has a pad-side fastening structure 8 at each end region in the vertical direction X that can be attached to and detached from the holder 11. In this embodiment, as shown in Figure 1 etc., the pad-side fastening structure 8 is provided on the skin-facing surface (inner surface) of the absorbent pad 1.

In this embodiment, the pad-side fastening structure 8 is fixed to the skin-facing surface of the second leak-proof sheet 70 that covers the skin-facing surface (top sheet 3, etc.) of the absorbent body 2, and is not directly fixed to the skin-facing surface of the absorbent body 2. If the absorbent pad 1 does not have the second leak-proof sheet 70 (second leak-proof cuff 7) and the pad-side fastening structure 8 is directly fixed to the skin-facing surface of the absorbent body 2, there is a concern that when excrement excreted in the crotch part M of the absorbent pad 1 moves to the abdominal part F or the dorsal part R, the excrement will adhere to the holder 11, shortening the period of use of the holder 11. However, in the absorbent pad 1 of this embodiment, the second leak-proof sheet 70 is interposed between the pad-side fastening structure 8 and the skin-facing surface of the absorbent body 2, so such concerns are eliminated.

The pad-side fastening structure 8 may be any known detachable fastening structure that can be detachably attached to the holder-side fastening structure 14 (see FIG. 5) of the holder 11, and any known detachable fastening structure may be used without any particular restrictions. For example, one or both of the pad-side fastening structure 8 and the holder-side fastening structure 14 may have an adhesive portion formed by applying an adhesive, and the pad-side fastening structure 8 may be detachably attached to the holder-side fastening structure 14 via the adhesive portion.

In this embodiment, a mechanical hook-and-loop fastener is used as the fastening structure including the pad-side fastening structure 8 and the holder-side fastening structure 14. The term "mechanical hook-and-loop fastener" refers to a fastener that is a set of a surface member (male member) having a hook material (engagement member) made of hook-shaped protrusions arranged on one surface, and a surface member (female member) having a loop material made of pile-shaped protrusions arranged on one surface. A specific example of a mechanical hook-and-loop fastener is Magic Tape (registered trademark).
Specifically, in this embodiment, the pad-side fastening structure 8 is a male member of a mechanical hook-and-loop fastener, and typically has a configuration in which a large number of hook members are arranged on the surface of a base material made of a resin film, a woven fabric, a nonwoven fabric, etc. The holder-side fastening structure 14 is a female member of a mechanical hook-and-loop fastener, and includes a base material and a fastening region provided on the non-skin-facing surface (outer surface) of the base material, to which the pad-side fastening structure 8 can be fastened.

The pad-side fastening structures 8 are arranged on the ventral side portion F and the dorsal side portion R of the absorbent pad 1, as shown in Figs. 2, 4(a) and 4(b).
In the abdominal portion F of the absorbent pad 1, the pad-side fastening structure 8F extends continuously in the lateral direction Y with a predetermined width. An outer edge 8FA in the longitudinal direction X of the pad-side fastening structure 8F is arranged so as to coincide with an outer edge 1X in the longitudinal direction of the absorbent pad 1. Both side edges 8FC, 8FD in the lateral direction Y of the pad-side fastening structure 8F are located inward in the lateral direction Y from both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1. In other words, both side edges 8FC, 8FD in the lateral direction Y of the pad-side fastening structure 8F do not reach both side edges in the lateral direction Y of the absorbent pad 1.

In the dorsal portion R of the absorbent pad 1, as in the ventral portion F, the pad-side fastening structure 8R extends continuously in the lateral direction Y with a predetermined width. The outer edge 8RA in the longitudinal direction X of the pad-side fastening structure 8R is arranged so as to coincide with the outer edge 1X in the longitudinal direction of the absorbent pad 1. Both side edges 8RC, 8RD in the lateral direction Y of the pad-side fastening structure 8R are located inward in the lateral direction Y from both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1. In other words, both side edges 8RC, 8RD in the lateral direction Y of the pad-side fastening structure 8R do not reach both side edges in the lateral direction Y of the absorbent pad 1.

2, 4(a) and 4(b), in the absorbent pad 1, the position of the end of the pad-side fastening structure 8F in the ventral portion F and the position of the end of the pad-side fastening structure 8R in the dorsal portion R are the same in the horizontal direction Y, but the lengths in the vertical direction X are different. Specifically, when the length along the vertical direction X from the inner edge 8B in the vertical direction X of the pad-side fastening structure 8 located at one end region in the vertical direction X of the absorbent pad 1 to one vertical end of the absorbent pad 1 is defined as a first length W1, and the length along the vertical direction X from the inner edge 8B in the vertical direction of the pad-side fastening structure 8 located at the other end region in the vertical direction X of the absorbent pad 1 to the other vertical end of the absorbent pad 1 is defined as a second length W2, the first length W1 is longer than the second length W2. In addition, when the one end region is the end region 1L having a larger length (hereinafter referred to as the "large end region 1L") and the other end region is the end region 1S having a smaller length (hereinafter referred to as the "small end region 1S"), when the absorbent pad 1 is worn, the small end region 1S is located on the wearer's ventral side, and the large end region 1L is located on the wearer's dorsal side. In other words, when the absorbent pad 1 is worn, the end region of the absorbent pad having the second length W2 is located on the ventral side F, and the end region of the absorbent pad having the first length W1 is located on the dorsal side R.

Since the pad-side fastening structure 8 of the absorbent pad 1 has a relationship of first length W1 > second length W2, for example, as shown in FIG. 5, when the absorbent pad 1 is worn while fixed to the holder 11 via the pad-side fastening structure 8, even if the wearer stands up or sits down while wearing the absorbent pad, movement around the legs on the ventral side is not easily hindered, so a comfortable fit can be maintained. Furthermore, on the back side, the fastening area to the holder-side fastening structure 14 by the pad-side fastening structure 8R that extends continuously in the lateral direction Y is relatively larger than that on the ventral side, so that the absorbent pad covers the lower part of the waist, and as a result, leakage of excrement on the back side can be prevented.

In order to make the pad-side fastening structure 8 in the absorbent pad 1 have a relationship of first length W1>second length W2, for example, as shown in Fig. 2, Fig. 4(a) and Fig. 4(b), the length in the vertical direction X of the pad-side fastening structure 8F in the ventral part F may be made shorter than the length in the vertical direction X of the pad-side fastening structure 8R in the dorsal part R. Alternatively, when pad-side fastening structures 8 of the same size and shape are arranged in the ventral part F and the dorsal part R, the length along the vertical direction X from the outer end edge 8FA in the vertical direction X of the pad-side fastening structure 8F in the ventral part F to the vertical end of the absorbent pad 1 in the ventral part F may be made shorter than the length along the vertical direction X from the outer end edge 8RA in the vertical direction X of the pad-side fastening structure 8R in the dorsal part R to the vertical end of the absorbent pad 1 in the dorsal part R.

In order to ensure the advantageous effects of the characteristic configurations of the pad side fastening structures 8F, 8R described above, it is preferable to set the dimensions of each portion as follows.
The fourth length 8FW in the vertical direction X of the pad side fastening structure 8F in the abdominal portion F is preferably 5 mm or more, more preferably 10 mm or more, and preferably 50 mm or less, more preferably 25 mm or less. When the fourth length 8FW is not constant over the entire length of the pad side fastening structure 8F in the horizontal direction Y, it is preferable that the minimum fourth length 8FW is within the above range. In addition, as described later, when a plurality of pad side fastening structures are intermittently arranged in the vertical direction X on the abdominal portion F, the fourth length 8FW refers to the smallest value of the length of the plurality of pad side fastening structures.
The third length 8RW in the vertical direction X of the pad-side fastening structure 8R in the back portion R is preferably 5 mm or more, more preferably 10 mm or more, and preferably 70 mm or less, more preferably 50 mm or less. When the third length 8RW is not constant over the entire length of the pad-side fastening structure 8R in the horizontal direction Y, it is preferable that the minimum third length 8RW is within the above range. In addition, as described later, when a plurality of pad-side fastening structures are intermittently arranged in the vertical direction X on the back portion R, the third length 8RW refers to the smallest value of the length of the plurality of pad-side fastening structures.
The second length W2 along the vertical direction X from the inner edge 8FB in the vertical direction X of the pad-side fastening structure 8F in the abdominal portion F to the vertical end of the absorbent pad 1 is preferably 10 mm or more, more preferably 15 mm or more, and preferably 70 mm or less, more preferably 50 mm or less. When the above-mentioned fourth length 8FW is not constant over the entire length of the pad-side fastening structure 8F in the horizontal direction Y, it is preferable that the minimum second length W2 is within the above range.
The first length W1 along the vertical direction X from the inner edge 8RB in the vertical direction X of the pad-side fastening structure 8R in the back portion R to the vertical end of the absorbent pad 1 is preferably 15 mm or more, more preferably 25 mm or more, and preferably 100 mm or less, more preferably 70 mm or less. When the above-mentioned third length 8RW is not constant over the entire length of the pad-side fastening structure 8R in the horizontal direction Y, it is preferable that the minimum first length W1 is within the above range.

In this embodiment, as shown in Fig. 4(a) and Fig. 4(b), the outer edge 8A in the vertical direction X and the inner edge 8B in the vertical direction X of the pad-side fastening structure 8 of the ventral part F and the dorsal part R can be straight lines and can be parallel to each other. The pad-side fastening structure 8 does not overlap with the edge 5A in the vertical direction X of the absorbent body 5, and the inner edge 8B of the pad-side fastening structure 8 terminates outside the edge 5A of the absorbent body 5 in the vertical direction X. In other words, the pad-side fastening structure 8 does not overlap with the absorbent body 5. This makes it difficult for the rigidity of the absorbent body 5 to be transmitted to the pad-side fastening structure 8, making it easier to fasten the pad-side fastening structure 8 to the holder 11.
4(a) and 4(b), both side edges 8C, 8D in the lateral direction Y of the pad-side fastening structure 8 of the ventral portion F and the dorsal portion R can be straight and parallel to each other. Furthermore, both side edges 8C, 8D do not reach the side edge 1Y of the absorbent pad 1, but terminate inward of the side edge 1Y in the lateral direction Y. Such a configuration of the pad-side fastening structure 8 provides an effect that when a caregiver peels off the absorbent pad 1 from a wearer wearing the diaper 10 including the absorbent pad 1 and the holder 11, the caregiver can easily grasp both ends of the absorbent pad 1 and peel off the absorbent pad 1 from the holder 11.

As described above, the absorbent pad 1 has a first leakage preventing cuff 6. As shown in FIG. 2, the first leakage preventing cuff 6 is disposed inward in the horizontal direction Y from the leg cuff 65. At least in the large end region 1L, it is preferable that the stretch start position 6A of the first leakage preventing cuff 6 coincides with the position of the inner edge 8B in the vertical direction X of the pad side fastening structure 8, or is disposed outward in the vertical direction X beyond the inner edge 8B. The positions of the first leakage preventing cuff 6 and the pad side fastening structure 8 in a plan view may overlap each other as shown in FIG. 3, or alternatively, they may not overlap each other.

In this embodiment, in the large end region 1L and the small end region 1S, the stretch start positions 6A of the first leakproof cuff 6 are formed as a pair at both end regions in the longitudinal direction X of the first elastic member 61. The first leakproof cuff 6 is not stretchable outward in the longitudinal direction X from the stretch start positions 6A. The first leakproof cuff 6 is stretchable at the stretch start position 6A and inward in the longitudinal direction X from position 6A, and the upright portion 62 of the first leakproof cuff 6 is formed in this position.

2, the expansion/contraction start position 6A of the first leakproof cuff 6 is, for example, the position of the end of the first elastic member 61. Another embodiment of the expansion/contraction start position 6A can be, for example, an end fixing portion (not shown) formed by fixing both end regions of the first elastic member 61 in the longitudinal direction X to the first leakproof sheet 60 with an adhesive or the like. This end fixing portion is different from the fixing portion 72 described above.
As in this embodiment, in the large end region 1L and the small end region 1S, it is preferable that the ends of all the first elastic members 61 are located beyond the inner edge 8B and outward in the longitudinal direction X, thereby forming the expansion/contraction start position 6A. In the present invention, it is sufficient that at least one first elastic member 61 is fixed at the position of the inner edge 8B or at a position outward from the inner edge 8B in the longitudinal direction X. In this case, the expansion/contraction start position 6A of the first leakage preventing cuff 6 is the position of the end or fixed position of the longest first elastic member 61.

2 and 3, the leg cuffs 65 are arranged to extend along the vertical direction X at a position further outward in the horizontal direction Y than both side edges of the absorbent body 5 in the horizontal direction Y. It is preferable that, at least in the large end region 1L, the stretch start position 6B of the leg cuffs 65 coincides with the position of the inner edge 8B in the vertical direction X of the pad-side fastening structure 8, or is positioned outward in the vertical direction X beyond the inner edge 8B. The positions of the leg cuffs 65 and the pad-side fastening structure 8 in a plan view may overlap each other as shown in FIG. 3, or alternatively, they may not overlap each other.

In this embodiment, the leg cuffs 65 are positioned outboard of the first leakage prevention cuffs 6 in the horizontal direction Y. In the large end region 1L and small end region 1S, the stretch start positions 6B of the leg cuffs 65 are formed as a pair at both end regions in the vertical direction X of the leg cuff forming elastic member 66. The leg cuffs 65 are not stretchable outboard of the stretch start positions 6B in the vertical direction X. The leg cuffs 65 are stretchable at the stretch start positions 6B and inboard of the positions 6B in the vertical direction X, and leg gathers are formed in these positions.

As with the embodiment of the expansion/contraction start position 6A of the first leakage prevention cuff 6, the expansion/contraction start position 6B of the leg cuff 65 may be, for example, an end of the leg cuff-forming elastic member 66, or may be an end fixing portion (not shown) formed by fixing both end regions in the longitudinal direction X of the leg cuff-forming elastic member 66 to the first leakage prevention sheet 60 with an adhesive or the like. This end fixing portion is different from the fixing portion 72 described above.
As in this embodiment, it is preferable that in the large end region 1L and the small end region 1S, the ends of all the leg cuff-forming elastic members 66 are positioned outward in the longitudinal direction X beyond the inner edge 8B, thereby forming the stretch start position 6B. In the present invention, it is sufficient that at least one leg cuff-forming elastic member 66 is fixed at the position of the inner edge 8B or at a position outward in the longitudinal direction X from the inner edge 8B. In this case, the stretch start position 6B of the leg cuff 65 is the position of the end or fixed position of the longest leg cuff-forming elastic member 66.

As described above, at least in the large end region 1L, by configuring the stretch start positions 6A, 6B of the first leakage prevention cuff 6 and the leg cuff 65 to coincide with the position of the inner edge 8B in the vertical direction X of the pad side fastening structure 8 or to be located beyond the inner edge 8B outward in the vertical direction X, the first leakage prevention cuff 6 can be effectively raised from the inner edge 8B in the vertical direction X of the pad side fastening structure 8 and its adjacent position, so that when the absorbent pad 1 is fixed to the holder 11 and worn, a gap is unlikely to occur between the absorbent pad 1 and the holder 11, especially on the back side. In addition, by forming the leg gathers up to the upper part around the wearer's legs, a gap is unlikely to occur between the absorbent pad 1 and the holder 11 when the absorbent pad 1 is fixed to the holder 11 and worn. As a result, excrement is unlikely to leak between the absorbent pad 1 and the holder 11, resulting in excellent leakage prevention. Furthermore, since the upright first leakage prevention cuff 6 and leg gathers are arranged in close contact with the wearer, the fit of the absorbent pad 1 when worn is improved, and the feeling of use is excellent. From the viewpoint of further achieving the above-mentioned effect, it is preferable to form only the large end region 1L, and more preferably to form both the large end region 1L and the small end region 1S, such that the stretch start positions 6A, 6B of the first leakage prevention cuff 6 and the leg cuff 65 coincide with the position of the inner end edge 8B in the vertical direction X of the pad-side fastening structure 8, or are positioned outward in the vertical direction X beyond the inner end edge 8B.

Figures 6 to 14 show examples of various forms of pad-side fastening structures that can be employed in the present invention. For the embodiments of the absorbent pad shown in Figures 6 to 14, configurations that differ from absorbent pad 1 shown in Figures 1 to 5 will be mainly described, and configurations similar to absorbent pad 1 will be given the same reference numerals and will not be described. For configurations not specifically described in the embodiments of the absorbent pad shown in Figures 6 to 14, the description of absorbent pad 1 shown in Figures 1 to 5 will be applied as appropriate.

In the absorbent pad 1 shown in Figures 6(a) and 6(b), in the ventral portion F and the dorsal portion R, both side edges 8C, 8D of each pad side fastening structure 8 are arranged so as to coincide with both side edges 1Y, 1Y of the absorbent pad 1 in the lateral direction Y.
Since the pad-side fastening structure 8 has such a shape, it is possible to maintain a comfortable fit on the ventral side without interfering with the movement of the wearer's legs, and to prevent leakage of excrement on the dorsal side. In addition, for example, if the wearer is an infant, there is a risk that the wearer will unintentionally force his/her fingers into the boundary between the pad-side fastening structure 8 and the holder-side fastening structure 14 and peel the absorbent pad 1 off from the holder 11. In this embodiment, in addition to the outer edge 8A in the vertical direction X of the pad-side fastening structure 8, both side edges 8C, 8D in the horizontal direction Y coincide with both side edges 1Y, 1Y in the horizontal direction Y of the absorbent pad 1, so that a gap through which fingers can enter is unlikely to occur at the boundary between the pad-side fastening structure 8 and the holder-side fastening structure 14. As a result, it is effectively prevented that the wearer will unintentionally peel the absorbent pad 1 off from the holder 11.

In the absorbent pad 1 shown in Fig. 7(a) and Fig. 7(b), the pad side fastening structures 8F, 8R are discontinuous in the lateral direction Y in the ventral portion F and the dorsal portion R. That is, the absorbent pad 1 of this embodiment has a plurality of pad side fastening structures 8F, 8R. The plurality of pad side fastening structures 8F, 8R are arranged at a distance in the lateral direction Y. In this embodiment, the dimensions and shapes of the pad side fastening structures 8F, 8R are the same, but this is not limited thereto and the dimensions and shapes of the pad side fastening structures 8F, 8R may be different from each other. The outermost ends in the lateral direction Y of the pad side fastening structures 8F, 8R located at the outermost positions in the lateral direction Y among the plurality of pad side fastening structures 8F, 8R are arranged to coincide with both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1.
Since the multiple pad- side fastening structures 8F, 8R are arranged at a distance in the lateral direction Y, the absorbent pad 1 of this embodiment has high flexibility in the vicinity of the pad- side fastening structures 8F, 8R. As a result, the absorbent pad 1 can maintain a comfortable fit without interfering with the wearer's leg movements on the ventral side, and can prevent leakage of excrement on the dorsal side, and also fits the wearer's body easily when worn.
In this embodiment, the region Q between the pad side fastening structures 8F, 8R adjacent to each other in the lateral direction Y is a right-angled quadrilateral as shown in Fig. 7(a) and Fig. 7(b). As long as the absorbent pad 1 has the above-mentioned effects related to having a plurality of pad side fastening structures 8F, 8R, the shape of the region Q is not limited. The shapes of the regions Q are all the same, but instead, the shapes of the regions Q may be different.
In order to achieve the above-mentioned effects more reliably, when the length of the absorbent pad 1 in the lateral direction Y is H1 and the length of the region Q in the lateral direction Y is Q1, the ratio of the length Q1 to the length H1 is preferably 1% or more, more preferably 3% or more, and is preferably 10% or less, more preferably 7% or less.

8(a) and 8(b), in the abdominal portion F and the dorsal portion R, two pad-side fastening structures 8 are intermittently arranged in the vertical direction X in the end regions in the vertical direction X. That is, in the absorbent pad 1 of this embodiment, in the abdominal portion F and the dorsal portion R, second pad- side fastening structures 82F, 82R extending along the horizontal direction Y at a distance from the first pad- side fastening structures 81F, 81R (hereinafter also referred to as "first pad-side fastening structure") (81F, 81R) located most outward in the vertical direction X are arranged inward in the vertical direction X.
The first pad side fastening structure 81F, 81R and the second pad side fastening structure 82F, 82R are both rectangular in plan view, and are arranged with their longitudinal direction aligned with the horizontal direction Y of the absorbent pad 1. The outer edge of the first pad side fastening structure 81F, 81R in the vertical direction X is aligned with the outer edge 1X in the vertical direction of the absorbent pad 1. The first pad side fastening structure 81F, 81R and the second pad side fastening structure 82F, 82R have the same shape and size as each other in plan view. The first pad side fastening structure 81F, 81R and the second pad side fastening structure 82F, 82R are arranged parallel to each other. The position of one end of the first pad side fastening structure 81F, 81R and the position of the other end of the second pad side fastening structure 82F, 82R are aligned with each other in the horizontal direction Y.

In the absorbent pad 1 shown in Figures 8 (a) and 8 (b), when the length along the vertical direction X from the inner edge 82RB in the vertical direction X of the second pad side fastening structure 82R, which is the pad side fastening structure located most vertically inward in one end region in the vertical direction X of the absorbent pad 1, to one vertical end region of the absorbent pad 1 is defined as a fifth length W5, and the length along the vertical direction X from the inner edge 82FB in the vertical direction X of the second pad side fastening structure 82F, which is the pad side fastening structure located most vertically inward in the other end region in the vertical direction X of the absorbent pad 1, to the other vertical end region of the absorbent pad 1 is defined as a sixth length W6, the fifth length W5 is longer than the sixth length W6. In addition, when the one end region is the large end region 1L and the other end region is the small end region 1S, when the absorbent pad 1 is worn, the small end region 1S is located on the wearer's ventral side, and the large end region 1L is located on the wearer's back side. In other words, when the absorbent pad 1 is worn, the end region of the absorbent pad having the fifth length W5 is located on the back side R, and the end region of the absorbent pad having the sixth length W6 is located on the ventral side F.

The pad-side fastening structures 8 in the absorbent pad 1 have a relationship of fifth length W5 > sixth length W6, which maintains a comfortable fit on the ventral side without interfering with the wearer's leg movements, and prevents leakage of excrement on the dorsal side. Furthermore, in this embodiment, multiple pad-side fastening structures 8 are arranged on the ventral portion F and dorsal portion R, which further prevents the absorbent pad 1 from peeling off from the holder 11 even when the wearer moves vigorously.

In order to ensure the above-mentioned effects, it is preferable to set the dimensions of each part as follows.
In the abdominal portion F, the interval L1 between the first pad side fastening structure 81F and the second pad side fastening structure 82F adjacent to each other in the vertical direction X is preferably 1 mm or more, more preferably 3 mm or more, and preferably 40 mm or less, more preferably 30 mm or less. When the interval L1 is not constant over the entire length of the absorbent pad 1 in the horizontal direction Y, it is preferable that the minimum interval L1 is within the above range. In addition, as described later, when three or more pad side fastening structures are intermittently arranged in the vertical direction X in the abdominal portion F, the interval L1 refers to the interval between the pad side fastening structure located most outward in the vertical direction X and the pad side fastening structure located most inward in the vertical direction X among the multiple pad side fastening structures.
In the back portion R, the interval L2 between the first pad side fastening structure 81R and the second pad side fastening structure 82R adjacent in the vertical direction X is preferably 3 mm or more, more preferably 5 mm or more, and preferably 50 mm or less, more preferably 40 mm or less. When the interval L2 is not constant over the entire length of the absorbent pad 1 in the horizontal direction Y, it is preferable that the minimum interval L2 is within the above range. In addition, as described later, in the back portion R, when three or more pad side fastening structures are intermittently arranged in the vertical direction X, the interval L2 refers to the interval between the pad side fastening structure located most outward in the vertical direction X and the pad side fastening structure located most inward in the vertical direction X among the multiple pad side fastening structures.

In the absorbent pad 1 shown in Figures 8(a) and 8(b), in at least one of the large end region 1L or the small end region 1S, it is preferable that the region N between two adjacent pad side fastening structures 8 in the vertical direction X is inelastic. In this embodiment, it is preferable that the region N between the first pad side fastening structure 81F, 81R and the second pad side fastening structure 82F, 82R is inelastic. The "elastic" in "inelastic" here refers to the property of being able to stretch and returning to a length of 110% or less of the original length when the force is released from a state stretched 50% of the original length (a state in which the length is 150% of the original length, i.e., 1.5 times the original length). It is preferable that the region N between adjacent pad side fastening structures 8 in the vertical direction X does not have such a property. As a result, for example, while wearing the diaper 10 shown in FIG. 5, the multiple pad-side fastening structures 8 (in this embodiment, the first pad-side fastening structure 81 and the second pad-side fastening structure 82) arranged at intervals in the vertical direction X can easily follow the movement of the wearer's body, so that the absorbent pad 1 is more effectively prevented from peeling off from the holder 11. From the viewpoint of further achieving the above-mentioned effect, it is preferable that the region N is inelastic in the large end region 1L or the small end region 1S, and it is more preferable that the region N is inelastic in both the large end region 1L and the small end region 1S.

8(a) and 8(b), in a plan view of the absorbent pad 1 in at least one of the large end region 1L and the small end region 1S, it is preferable that the pad side fastening structure 8 located most outward in the longitudinal direction X does not overlap with the absorbent body, and the pad side fastening structure 8 located most inward in the longitudinal direction X overlaps with the absorbent body 5. In this embodiment, in the large end region 1L, an inner edge 81RB in the longitudinal direction X of the first pad side fastening structure 81R is located outward in the longitudinal direction X from an edge 5A in the longitudinal direction X of the absorbent body 5, and an inner edge 82RB in the longitudinal direction X of the second pad side fastening structure 82R is located inward in the longitudinal direction X from an edge 5A in the longitudinal direction X of the absorbent body 5. In the small end region 1S, the inner edge 81FB in the longitudinal direction X of the first pad side fastening structure 81F is positioned outward in the longitudinal direction X from the edge 5A in the longitudinal direction X of the absorbent body 5, and the inner edge 82FB in the longitudinal direction X of the second pad side fastening structure 82F is also positioned outward in the longitudinal direction X from the edge 5A in the longitudinal direction X of the absorbent body 5.
The positional relationship between the pad side fastening structure 8 and the absorbent body 5 described above reduces the rigidity of the absorbent pad 1 in the area where the pad side fastening structures 81R, 81F, 82F do not overlap the absorbent body 5, thereby more effectively preventing the absorbent pad 1 from peeling off from the holder 11. Furthermore, when the absorbent pad 1 is fixed to the holder 11 and worn, the pad side fastening structure 82R overlaps the absorbent body 5, so that the absorbent body 5 is fixed to the wearer via the holder 11, thereby more effectively preventing leakage of excrement. From the viewpoint of further achieving this effect, it is preferable that the pad side fastening structure 8 and the absorbent body 5 are in the positional relationship described above in the large end region 1L or the small end region 1S, and it is more preferable that the pad side fastening structure 8 and the absorbent body 5 are in the positional relationship described above in both the large end region 1L and the small end region 1S.

In the absorbent pad 1 shown in Figures 9(a) and 9(b) and Figures 10(a) and 10(b), in the absorbent pad 1 shown in Figures 8(a) and 8(b), of the two pad-side fastening structures 8 intermittently arranged in the vertical direction X in both the large end region 1L and the small end region 1S, the width in the vertical direction X of the pad-side fastening structure 8 located outermost in the vertical direction X is different from the width in the vertical direction X of the other pad-side fastening structure 8.
Specifically, in the absorbent pad 1 shown in Figures 9(a) and 9(b), in the large end region 1L and the small end region 1S, the width in the vertical direction X of the first pad side fastening structures 81F, 81R is larger than the width in the vertical direction X of the second pad side fastening structures 82F, 82R.
Since the width in the vertical direction X of the first pad side fastening structure 81F, 81R and the width in the vertical direction X of the second pad side fastening structure 82F, 82R are in the above-mentioned relationship, the fastening force of the first pad side fastening structure 81F, 81R, which is located on the outside in the vertical direction X and is easy for the wearer to grasp, is relatively stronger than that of the second pad side fastening structure 82F, 82R. This prevents the wearer from unintentionally wedging his or her fingers into the boundary between the first pad side fastening structure 81F, 81R and the holder side fastening structure 14 and removing the absorbent pad 1 from the holder 11. Furthermore, since the fastening force of the second pad side fastening structures 82F, 82R located on the inside in the vertical direction X is relatively weaker than that of the first pad side fastening structures 81F, 81R, when a third party other than the wearer takes off the diaper, the absorbent pad 1 can be easily removed from the holder 11 by peeling the absorbent pad 1 starting from the part with weak fastening force. From the viewpoint of further achieving this effect, it is preferable that the width in the vertical direction X of the first pad side fastening structures 81F, 81R and the width in the vertical direction X of the second pad side fastening structures 82F, 82R have the above-mentioned relationship in the large end region 1L or the small end region 1S, and it is more preferable that the width in the vertical direction X of the first pad side fastening structures 81F, 81R and the width in the vertical direction X of the second pad side fastening structures 82F, 82R have the above-mentioned relationship in both the large end region 1L and the small end region 1S.
In addition, in the absorbent pad 1 shown in Figures 10(a) and 10(b), in the large end region 1L and the small end region 1S, the width in the vertical direction X of the first pad side fastening structures 81F, 81R is smaller than the width in the vertical direction X of the second pad side fastening structures 82F, 82R.
Since the width in the vertical direction X of the first pad side fastening structures 81F, 81R and the width in the vertical direction X of the second pad side fastening structures 82F, 82R are in the above-mentioned relationship, the fastening force of the first pad side fastening structures 81F, 81R located on the outside in the vertical direction X and easy to grip by the wearer is relatively weaker than that of the second pad side fastening structures 82F, 82R, so that even if the wearer's fingers are weak, the wearer can easily peel off the absorbent pad 1 from the holder 11 by himself/herself, starting from the part where the fastening force is weak. Furthermore, since the fastening force of the second pad side fastening structures 82F, 82R located on the inside in the vertical direction X is relatively stronger than that of the first pad side fastening structures 81F, 81R, the absorbent pad 1 is less likely to be unintentionally peeled off from the holder 11 while the diaper 1 is being worn. In order to further enhance this effect, it is preferable that in the large end region 1L or the small end region 1S, the width in the vertical direction X of the first pad side fastening structure 81F, 81R and the width in the vertical direction X of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship, and it is more preferable that in both the large end region 1L and the small end region 1S, the width in the vertical direction X of the first pad side fastening structure 81F, 81R and the width in the vertical direction X of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship.

The absorbent pad 1 shown in Figures 11(a) and 11(b) and Figures 12(a) and 12(b) is the absorbent pad 1 shown in Figures 8(a) and 8(b) in which, of two pad-side fastening structures 8 arranged intermittently in the vertical direction X in both the large end region 1L and the small end region 1S, the width in the horizontal direction Y of the pad-side fastening structure 8 located most inward in the vertical direction X is different from the width in the horizontal direction Y of the other pad-side fastening structure 8.
Specifically, in the absorbent pad 1 shown in Figures 11(a) and 11(b), the width in the lateral direction Y of the second pad side fastening structures 82F, 82R is smaller than the width in the lateral direction Y of the first pad side fastening structures 81F, 81R.
Since the width in the lateral direction Y of the first pad side fastening structures 81F, 81R and the width in the lateral direction Y of the second pad side fastening structures 82F, 82R are in the above-mentioned relationship, the abdominal side does not interfere with the wearer's leg movements and maintains a comfortable fit, and the dorsal side does not interfere with the wearer's leg movements and maintains a comfortable fit, while preventing leakage of excrement. Furthermore, in this embodiment, since a plurality of pad side fastening structures 8 are arranged on the abdominal side portion F and the dorsal side portion R, the absorbent pad 1 is further prevented from peeling off from the holder 11 even when the wearer moves vigorously. In order to further achieve this effect, it is preferable that in the large end region 1L or the small end region 1S, the width in the lateral direction Y of the first pad side fastening structure 81F, 81R and the width in the lateral direction Y of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship, and it is even more preferable that in both the large end region 1L and the small end region 1S, the width in the lateral direction Y of the first pad side fastening structure 81F, 81R and the width in the lateral direction Y of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship.
In addition, in the absorbent pad 1 shown in Figures 12(a) and 12(b), the width in the horizontal direction Y of the second pad side fastening structures 82F, 82R is larger than the width in the horizontal direction Y of the first pad side fastening structures 81F, 81R.
Since the width in the lateral direction Y of the first pad side fastening structures 81F, 81R and the width in the lateral direction Y of the second pad side fastening structures 82F, 82R are in the above-mentioned relationship, the wearer's movement around the legs is not easily hindered on the ventral side, and a comfortable fit is maintained, while the wearer's movement around the legs is not easily hindered on the dorsal side, and a comfortable fit is maintained, and leakage of excrement can be prevented. In addition, the absorbent pad 1 can be firmly fastened to the holder side fastening structure 14 on the dorsal side by the second pad side fastening structure 82R, which also prevents leakage of excrement. In order to further achieve this effect, it is preferable that in the large end region 1L or the small end region 1S, the width in the lateral direction Y of the first pad side fastening structure 81F, 81R and the width in the lateral direction Y of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship, and it is even more preferable that in both the large end region 1L and the small end region 1S, the width in the lateral direction Y of the first pad side fastening structure 81F, 81R and the width in the lateral direction Y of the second pad side fastening structure 82F, 82R satisfy the above-mentioned relationship.

In the absorbent pad 1 shown in Figures 13(a) and 13(b), three pad side fastening structures 8 are arranged intermittently in the vertical direction X on the back side portion R in the absorbent pad 1 shown in Figures 8(a) and 8(b).
Specifically, a third pad side fastening structure 83R extending along the horizontal direction Y is disposed at a position closer to the inside in the vertical direction X than the second pad side fastening structure 82R and at a distance from the second pad side fastening structure 82R. The third pad side fastening structure 83R is disposed on the skin-facing surface side of the absorbent pad 1, similar to the first pad side fastening structure 81R and the second pad side fastening structure 82R.
In the back portion R of the absorbent pad 1, in addition to the first pad side fastening structure 81R and the second pad side fastening structure 82R, the third pad side fastening structure 83R is adopted, thereby reducing the load on each pad side fastening structure 8. Furthermore, when the holder 11 is deformed, the absorbent pad 1 is deformed from the area between the adjacent first pad side fastening structure 81R and the second pad side fastening structure 82R, and between the adjacent second pad side fastening structure 82R and the third pad side fastening structure 83R, so that the absorbent pad 1 can more easily follow the holder 11. This more effectively prevents the absorbent pad 1 from peeling off from the holder 11 while the diaper 10 is being worn.

In order to ensure the above-mentioned effects, it is preferable to set the dimensions of each part as follows.
In the back portion R, the distance L3 between the second pad side fastening structure 82R and the third pad side fastening structure 83R adjacent in the vertical direction X is preferably 1 mm or more, more preferably 3 mm or more, and preferably 30 mm or less, more preferably 20 mm or less. When the distance L3 is not constant over the entire length of the absorbent pad 1 in the horizontal direction Y, it is preferable that the minimum distance L3 is within the above range.
In the dorsal portion R, the distance between the first pad side fastening structure 81R and the second pad side fastening structure 82R adjacent to each other in the vertical direction X is the distance L2 described above. In the abdominal portion F, the distance between the first pad side fastening structure 81F and the second pad side fastening structure 82F adjacent to each other in the vertical direction X is the distance L1 described above.

In the absorbent pad 1 shown in Figures 14(a) and 14(b), in the absorbent pad 1 shown in Figures 4(a) and 4(b), the width in the lateral direction Y of the pad side fastening structure 8R in the large end region 1L located in the dorsal side portion R is different from the width in the lateral direction Y of the pad side fastening structure 8F in the small end region 1S located in the abdominal side portion F.
14(a) and 14(b), when the length in the lateral direction Y of the pad-side fastening structure 8R in the large end region 1L is defined as a seventh length W7 and the length in the lateral direction Y of the pad-side fastening structure 8F in the small end region 1S is defined as an eighth length W8, the seventh length W7 is greater than the eighth length W8. When a plurality of pad- side fastening structures 8F, 8R are arranged at a distance in the lateral direction Y in the abdominal portion F and the dorsal portion R, the length from one outermost end to the other outermost end in the lateral direction Y of the pad-side fastening structure 8R in the dorsal portion R is greater than the length from one outermost end to the other outermost end in the lateral direction Y of the pad-side fastening structure 8F in the abdominal portion F.
Since the pad side fastening structure 8 in the absorbent pad 1 has a relationship of seventh length W7 > eighth length W8, it is possible to maintain a comfortable fit on the ventral side without interfering with the wearer's leg movements, and to prevent leakage of excrement on the dorsal side.

In order to make the pad-side fastening structure 8 in the absorbent pad 1 have the relationship of seventh length W7 > eighth length W8, for example, as shown in Figures 14(a) and 14(b), the width in the lateral direction Y of the pad-side fastening structure 8F in the abdominal part F may be made shorter than the width in the lateral direction Y of the pad-side fastening structure 8R in the dorsal part R. Alternatively, when multiple pad- side fastening structures 8F, 8R are arranged at a distance in the lateral direction Y in the abdominal part F and dorsal part R, the pad-side fastening structure 8R in the dorsal part R may be arranged so that the position of the outermost end in the lateral direction Y of the pad-side fastening structure 8F in the abdominal part F is further outward in the lateral direction Y than the position of the outermost end in the lateral direction Y of the pad-side fastening structure 8F in the abdominal part F.

In order to ensure the above-mentioned effects, it is preferable to set the dimensions of each part as follows.
The eighth length W8, which is the length of the pad-side fastening structure 8F in the lateral direction Y in the small end region 1S, is preferably 50 mm or more, more preferably 70 mm or more, and is preferably 200 mm or less, more preferably 180 mm or less. When the eighth length W8 is not constant over the entire length of the pad-side fastening structure 8F in the longitudinal direction X, it is preferable that the minimum eighth length W8 is in the above range.
The seventh length W7, which is the length of the pad-side fastening structure 8R in the transverse direction Y in the large end region 1L, is preferably 70 mm or more, more preferably 100 mm or more, and is preferably 250 mm or less, more preferably 200 mm or less. When the seventh length W7 is not constant over the entire length of the pad-side fastening structure 8R in the longitudinal direction X, it is preferable that the minimum seventh length W7 is in the above range.

While the present invention has been described above based on its preferred embodiments, the present invention is not limited to the above-described embodiments and can be modified as appropriate without departing from the spirit of the present invention.
For example, in the embodiment shown in Figures 1 to 14, the outer edge 8A in the vertical direction X of the pad-side fastening structure 8 coincides with the outer edge 1X in the vertical direction of the absorbent pad 1, but instead, the outer edge 8A in the vertical direction X of the pad-side fastening structure 8 may be positioned inward in the vertical direction X from the outer edge 1X in the vertical direction of the absorbent pad 1.

FIG. 15 illustrates another embodiment of the absorbent pad 1. The embodiment of the absorbent pad shown in FIG. 15 will be described mainly in terms of configurations that differ from the absorbent pad 1 shown in FIGS. 1 to 5, and configurations similar to those of the absorbent pad 1 will be given the same reference numerals and will not be described. For configurations not specifically described in the embodiment of the absorbent pad shown in FIG. 15, the description of the absorbent pad 1 shown in FIGS. 1 to 5 applies as appropriate.

1 to 5, a second elastic member 71 is disposed between the second leak- proof sheets 70, 70 constituting the second leak-proof cuff 7. In the above-described embodiment, the arrangement of the second elastic member 71 is the same in the abdominal portion F and the dorsal portion R, but instead, as in the embodiment shown in Figures 15(a) and 15(b), the arrangement of the second elastic member 71 in the abdominal portion F and the dorsal portion R may be different.
Specifically, in this embodiment, in the abdominal portion F, three second elastic members (hereinafter also referred to as "abdominal second elastic members") 71F extending in the horizontal direction Y are arranged at an end portion on the vertical inner end 70B side of the second leakproof sheet 70. Each of the abdominal second elastic members 71F is arranged so as to straddle a pair of fixed regions P, P and the non-fixed portion 75 therebetween in the horizontal direction Y. Meanwhile, in the dorsal portion R, only one second elastic member (hereinafter also referred to as "dorsal second elastic member") 71R extending in the horizontal direction Y is arranged at an end portion on the vertical inner end 70B side of the second leakproof sheet 70. The dorsal second elastic member 71R is arranged in the horizontal direction Y at the non-fixed portion 75. Both side edges of the dorsal second elastic member 71R are arranged inward in the horizontal direction Y from the inner side edges of the fixed regions P, P in the horizontal direction Y. In other words, the rear side second elastic member 71R is not disposed in the fixing regions P, P.
In addition, the ventral side second elastic member 71F and the dorsal side second elastic member 71R are both thread-like.

In the present embodiment, due to the second elastic member 71 being disposed as described above, the stress of the second elastic member 71 differs between the ventral portion F and the dorsal portion R. Specifically, the stress of the second elastic member 71F of the ventral portion F is greater than the stress of the second elastic member 71R of the dorsal portion R.
Since the stresses of the ventral second elastic member 71F and the back side second elastic member 71R are in the above-mentioned relationship, the ventral second elastic member 71F can contract more than the back side second elastic member 71R, and the degree to which both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1 curve toward the skin-facing surface is greater in the ventral part F than in the back side R. As a result, when the absorbent pad 1 is worn, the length in the lateral direction Y of the ventral part F is shorter than the length in the lateral direction Y of the back side R, and the wearer's movements around the legs are less likely to be hindered, particularly on the ventral side, and a comfortable fit can be maintained. Furthermore, since the capacity of the pocket portion 78 (see FIG. 1) of the ventral part F is larger than the capacity of the pocket portion 78 of the back side R, even if the absorbent pad 1 is deformed due to the wearer's movements around the legs, leakage of excrement from the ventral part F in particular can be prevented.
When multiple ventral side second elastic members 71F and multiple dorsal side second elastic members 71R are arranged, the stress in the area where the ventral side second elastic members 71F are arranged should be greater than the stress in the area where the dorsal side second elastic members 71R are arranged.

In order to more reliably achieve the above-mentioned effects, the stress of the abdominal side second elastic member 71F is preferably 0.1 N or more, more preferably 0.2 N or more, and is preferably 1.0 N or less, more preferably 0.8 N or less. When a plurality of abdominal side second elastic members 71F are arranged, it is preferable that the stress of the region where the abdominal side second elastic members 71F are arranged is within the above range.
From the same viewpoint, the stress of the back-side second elastic member 71R is preferably 0.05 N or more, more preferably 0.1 N or more, and is preferably 0.8 N or less, more preferably 0.5 N or less. When a plurality of back-side second elastic members 71R are arranged, it is preferable that the stress of the region where the back-side second elastic members 71R are arranged is within the above range.

In order to achieve the above-mentioned effects more reliably, the ratio of the stress of the ventral second elastic member 71F to the stress of the dorsal second elastic member 71R is preferably 1.2 or more, more preferably 1.5 or more, and is preferably 4.0 or less, more preferably 3.0 or less. When a plurality of ventral second elastic members 71F and dorsal second elastic members 71R are arranged, it is preferable that the ratio of the stress of the region where the ventral second elastic member 71F is arranged to the stress of the region where the dorsal second elastic member 71R is arranged is within the above-mentioned range.

The stress of the second elastic member 71 can be measured by the following method. Specifically, first, the absorbent pad 1 is unfolded and put into a maximum stretched state, and two marks are made 100 mm apart along the contraction direction of the second elastic member 71. The second elastic member 71 is separated from the absorbent pad 1 by cutting outward from the two marks, and this is used as a measurement sample. When a plurality of second elastic members 71 are arranged, all the second elastic members 71 are separated together. When the second elastic members 71 are bonded to the second leakproof sheet 70 by an adhesive, they are separated together with the second leakproof sheet 70.
Next, a tensile test is performed using a Tensilon tensile tester (RTC-1210A, manufactured by ORIENTEC). The measurement sample is clamped so that the mark on the measurement sample is at the inner end of the chuck. At this time, the distance between the chucks is adjusted so that the second elastic member 71 is in a non-stretched, slack state. Thereafter, the distance between the chucks is expanded at a speed of 300 mm/min until the distance becomes 90 mm, and then is reduced to 75 mm. The stress (N) at this time is defined as the stress of the second elastic member 71.

In order to make the stresses of the ventral second elastic member 71F and the rear second elastic member 71R have the above-mentioned relationship, for example, when the second elastic member 71 is thread-like, it is preferable to make the fineness of the second elastic member 71 different between the ventral part F and the rear part R. Specifically, as shown in Fig. 15(a) and Fig. 15(b), it is preferable that the fineness of the second elastic member 71F of the ventral part F is greater than the fineness of the second elastic member 71R of the rear part R. This makes the stress of the ventral second elastic member 71F greater than the stress of the rear second elastic member 71R, and as described above, it is possible to maintain a comfortable fit, especially on the ventral side, without hindering the wearer's leg movements. Furthermore, even if the absorbent pad 1 is deformed due to the wearer's leg movements, it is possible to prevent excrement from leaking out, especially from the ventral part F.
When multiple ventral side second elastic members 71F and multiple dorsal side second elastic members 71R are arranged, the fineness of the ventral side second elastic member 71F having the largest fineness may be greater than the fineness of the dorsal side second elastic member 71R having the largest fineness.

In order to more reliably achieve the above-mentioned effects, the fineness of the abdominal side second elastic member 71F is preferably 470 dtex or more, more preferably 620 dtex or more, and preferably 1240 dtex or less, more preferably 940 dtex or less. When a plurality of abdominal side second elastic members 71F are arranged and the fineness of each of them is not uniform, it is preferable that the maximum fineness is within the above range.
From the same viewpoint, the fineness of the back-side second elastic member 71R is preferably 310 dtex or more, preferably 940 dtex or less, and more preferably 780 dtex or less. When a plurality of back-side second elastic members 71R are arranged and the fineness of each of them is not uniform, it is preferable that the maximum fineness is within the above range.

In order to achieve the above-mentioned effects more reliably, the ratio of the fineness of the ventral second elastic member 71F to the fineness of the dorsal second elastic member 71R is preferably 1.2 or more, more preferably 1.5 or more, and preferably 4.0 or less, more preferably 3.0 or less. When a plurality of ventral second elastic members 71F and dorsal second elastic members 71R are arranged and the fineness of each is not constant, it is preferable that the ratio of the ventral second elastic member 71F having the maximum fineness to the dorsal second elastic member 71R having the maximum fineness is within the above range.

The fineness of the second elastic member 71 can be measured by the following method. Specifically, first, the entire absorbent pad 1 is immersed in a sufficient amount of tetrahydrofuran (THF) solvent, and the second elastic member 71 is peeled off from the absorbent pad 1. Next, the peeled second elastic member 71 is sufficiently dried for one week in a room at 20°C and 50% humidity. After that, the length T1 (mm) and mass T2 (g) of the second elastic member 71 in its natural state after drying are measured. The value calculated based on the following formula (1) is defined as the fineness of the second elastic member 71.
Fineness of second elastic member=10,000,000/(T1×T2) (1)

In the absorbent pad 1, it is preferable to make the number of second elastic members 71 different between the ventral portion F and the rear portion R. Specifically, as shown in Figures 15(a) and 15(b), it is preferable that the number of second elastic members 71F in the ventral portion F is greater than the number of second elastic members 71R in the rear portion R. This also makes it possible to make the stress of the ventral second elastic members 71F greater than the stress of the rear second elastic members 71R.
Since the numbers of the abdominal second elastic members 71F and the back second elastic members 71R are in the above-mentioned relationship, the abdominal second elastic members 71F can contract more easily than the back second elastic members 71R, and the degree to which both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1 curve toward the skin-facing surface is likely to be greater in the abdominal part F than in the back part R. As a result, when the absorbent pad 1 is worn, the length in the lateral direction Y of the abdominal part F is likely to be shorter than the length in the lateral direction Y of the back part R, and the wearer's movements around the legs are less likely to be hindered, particularly on the abdominal side, and a comfortable fit can be maintained. Furthermore, the capacity of the pocket portion 78 (see FIG. 1) in the abdominal part F is likely to be larger than the capacity of the pocket portion 78 in the back part R, and even if the absorbent pad 1 is deformed due to the wearer's movements around the legs, leakage of excrement from the abdominal part F in particular can be prevented.

In order to more reliably achieve the above-mentioned effects, the number of the abdominal side second elastic members 71F is preferably two or more, more preferably three or more, and is preferably five or less, more preferably four or less.
From the same viewpoint, the number of the rear side second elastic members 71R is preferably one or more, and is preferably three or less, and more preferably two or less.

In the absorbent pad 1, it is preferable that the length of the stretch region of the second elastic member 71 is different between the ventral portion F and the rear portion R. Specifically, as shown in Figures 15(a) and 15(b), it is preferable that the length of the stretch region of the second elastic member 71F in the ventral portion F is longer than the length of the stretch region of the second elastic member 71R in the rear portion R. The "stretch region of the second elastic member" here refers to a region in the absorbent pad 1 where stretch of the second elastic member 71 occurs, and the region where the stretch occurs is a region that is the same as or shorter than the length of the second elastic member 71. The length of the stretch region of the second elastic member can be measured by a method described later.
Since the stretchable regions of the ventral second elastic member 71F and the dorsal second elastic member 71R are in the above-mentioned relationship, the length of the curve of the both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1 toward the skin-facing surface is likely to be longer on the ventral side F than on the dorsal side R. As a result, when the absorbent pad 1 is worn, the length of the lateral direction Y of the ventral side F is likely to be shorter than the length of the lateral direction Y of the dorsal side R, and the wearer's movements around the legs are less likely to be hindered, particularly on the ventral side, and a comfortable fit can be maintained. Furthermore, the capacity of the pocket portion 78 (see FIG. 1) on the ventral side F is likely to be larger than the capacity of the pocket portion 78 on the dorsal side R, and even if the absorbent pad 1 is deformed due to the wearer's movements around the legs, leakage of excrement from the ventral side F in particular can be prevented.
When multiple ventral side second elastic members 71F and multiple dorsal side second elastic members 71R are arranged, the extension area of the ventral side second elastic member 71F having the longest length may be longer than the extension area of the dorsal side second elastic member 71R having the longest length.

In order to ensure the above-mentioned effects, the length of the stretchable region of the abdominal side second elastic member 71F is preferably 50 mm or more, more preferably 70 mm or more, and is preferably 200 mm or less, more preferably 180 mm or less. When a plurality of abdominal side second elastic members 71F are arranged and the lengths of the members are not uniform, it is preferable that the maximum stretchable region is within the above range.
From the same viewpoint, the length of the stretchable region of the back-side second elastic member 71R is preferably 30 mm or more, more preferably 45 mm or more, and is preferably 150 mm or less, more preferably 120 mm or less. When a plurality of back-side second elastic members 71R are arranged and the lengths of the members are not uniform, it is preferable that the maximum stretchable region is within the above range.

In order to achieve the above-mentioned effects more reliably, the ratio of the length of the stretch region of the ventral second elastic member 71F to the length of the stretch region of the dorsal second elastic member 71R is preferably 1.2 or more, more preferably 1.5 or more, and is preferably 4.0 or less, more preferably 3.0 or less. When multiple ventral second elastic members 71F and dorsal second elastic members 71R are arranged and their respective lengths are not constant, it is preferable that the ratio of the longest ventral second elastic member 71F to the longest dorsal second elastic member 71R is within the above range.

The length of the stretched region of the second elastic member 71 can be measured by the following method. Specifically, the absorbent pad 1 is placed in its natural state, and two marks are made with an oil pen on both ends of the stretched region of the second elastic member 71 in contraction from the skin-facing surface of the absorbent pad 1. If multiple second elastic members 71 are arranged, a mark is made on both ends of the stretched region of the second elastic member 71 with the greatest length. Next, the absorbent pad 1 is unfolded and placed in its maximum stretched state, and the length between the two marks is measured. This length is the length of the stretched region of the second elastic member 71.

In the absorbent pad 1, it is preferable that the extension rate of the second elastic member 71 is different between the ventral portion F and the dorsal portion R. Specifically, it is preferable that the extension rate of the second elastic member 71F in the ventral portion F is greater than the extension rate of the second elastic member 71R in the dorsal portion R. This also makes it possible to make the stress of the ventral second elastic member 71F greater than the stress of the dorsal second elastic member 71R.
Since the elongation rates of the abdominal second elastic member 71F and the back side second elastic member 71R are in the above-mentioned relationship, the abdominal second elastic member 71F can contract more easily than the back side second elastic member 71R, and the degree to which both side edges 1Y, 1Y in the lateral direction Y of the absorbent pad 1 curve toward the skin-facing surface side is likely to be greater in the abdominal part F than in the back side R. As a result, when the absorbent pad 1 is worn, the length in the lateral direction Y of the abdominal part F is likely to be shorter than the length in the lateral direction Y of the back side R, and the wearer's movement around the legs is less likely to be hindered, particularly on the abdominal side, and a comfortable fit can be maintained. Furthermore, the capacity of the pocket portion 78 (see FIG. 1) in the abdominal part F is likely to be larger than the capacity of the pocket portion 78 in the back side R, and even if the absorbent pad 1 is deformed due to the wearer's movement around the legs, leakage of excrement from the abdominal part F in particular can be prevented.
When multiple ventral side second elastic members 71F and multiple dorsal side second elastic members 71R are arranged, the elongation rate of the ventral side second elastic member 71F having the maximum elongation rate should be greater than the elongation rate of the dorsal side second elastic member 71R having the maximum elongation rate.

In order to ensure the above-mentioned effects, the extension rate of the abdominal side second elastic member 71F is preferably 150% or more, more preferably 180% or more, and is preferably 440% or less, more preferably 360% or less. When a plurality of abdominal side second elastic members 71F are arranged and the extension rates of the respective members are not constant, it is preferable that the maximum extension rate is within the above range.
From the same viewpoint, the elongation rate of the back-side second elastic member 71R is preferably 110% or more, more preferably 120% or more, and is preferably 250% or less, more preferably 200% or less. When a plurality of back-side second elastic members 71R are arranged and the elongation rates of the respective members are not constant, it is preferable that the maximum elongation rate is within the above range.

In order to achieve the above-mentioned effects more reliably, the ratio of the elongation rate of the ventral second elastic member 71F to the elongation rate of the dorsal second elastic member 71R is preferably 1.2 or more, more preferably 1.5 or more, and is preferably 4.0 or less, more preferably 3.0 or less. When multiple ventral second elastic members 71F and dorsal second elastic members 71R are arranged and their respective elongation rates are not constant, it is preferable that the ratio between the ventral second elastic member 71F having the maximum elongation rate and the dorsal second elastic member 71R having the maximum elongation rate is within the above range.

The elongation rate of the second elastic member 71 can be measured by the following method. Specifically, first, the absorbent pad 1 is in a natural state, and two marks are made with an oil pen at the positions where the second elastic members 71 are present from the skin-facing surface of the absorbent pad 1, with a distance T3 in the elongation direction of each second elastic member 71. Next, the absorbent pad 1 is unfolded and in a maximum elongation state, and the length T4 between the two marks is measured. This measurement is performed three times for each second elastic member 71. The value calculated based on the following formula (2) is the elongation rate (%) of the second elastic member 71. The distance T3 can be, for example, 100 mm, but if the stretchable range is less than 100 mm, the distance T3 is made as wide as possible for measurement.
Elongation rate of second elastic member=T4/T3×100 (2)

The absorbent pad of the present invention may also be provided with a disposal tape and an indicator for notifying the wearer of excretion. The disposal tape is for maintaining the state of the absorbent pad rolled up when the used absorbent pad is rolled up small and discarded. The disposal tape is typically provided on the non-skin-facing surface (outer surface) of the absorbent pad, and when in use, is arranged so as to straddle one end of the absorbent pad exposed to the outer surface in the same direction as the absorbent pad rolled up vertically with the skin-facing surface (inner surface) on the inside, thereby maintaining the rolled state of the absorbent pad. The indicator is used for the purpose of notifying the wearer when it is time to replace the absorbent pad, and is typically designed to change color visually by contact with urine, and the color change of the indicator is made visible from the outside of the absorbent pad. The disposal tape and indicator may be any of those conventionally used in this type of absorbent article, without any particular restrictions.

In addition, in the above embodiment, the pad-side fastening structure 8 is a male member of the mechanical hook-and-loop fastener, and the holder-side fastening structure 14 is a female member of the mechanical hook-and-loop fastener, but in the present invention, the pad-side fastening structure 8 may be a female member of the mechanical hook-and-loop fastener, and the holder-side fastening structure 14 may be a male member of the mechanical hook-and-loop fastener.

Furthermore, the absorbent pad of the present invention may be for infants or adults. As described above, when the absorbent pad of the present invention is worn while removably fixed to the holder, it is possible to prevent the wearer from unintentionally removing the pad, and therefore the effect of the present invention becomes even more pronounced when the absorbent pad of the present invention is used for infants.

The following supplementary notes are further disclosed regarding the above-described embodiment of the present invention.
＜1＞
The garment comprises a top sheet located close to the wearer's skin when worn, a back sheet located far from the wearer's skin, and an absorbent body located between the two sheets;
A vertical direction and a horizontal direction perpendicular to the vertical direction are provided.
An absorbent pad that is removably fixed to a holder that is attached in a circular shape around the waist of a wearer,
Each end region in the longitudinal direction has a fastening structure that can be attached to and detached from the holder,
The fastening structure extends continuously or discontinuously in the lateral direction;
a length along the longitudinal direction from an inner edge of the fastening structure located in one longitudinal end region to the one longitudinal end of the absorbent pad is longer than a length along the longitudinal direction from an inner edge of the fastening structure located in the other longitudinal end region to the other longitudinal end of the absorbent pad;
The absorbent pad is adapted so that the end region having the smaller length is positioned on the ventral side of the wearer and the end region having the larger length is positioned on the dorsal side of the wearer.

＜2＞
The absorbent pad described in <1>, wherein the length along the vertical direction from the vertical inner edge of the fastening structure in the ventral portion to the vertical end of the absorbent pad is preferably 10 mm or more, more preferably 15 mm or more, and preferably 70 mm or less, more preferably 50 mm or less.
＜3＞
The absorbent pad described in <1> or <2>, wherein the length along the vertical direction from the vertical inner edge of the fastening structure at the back side portion to the vertical end portion of the absorbent pad is preferably 15 mm or more, more preferably 25 mm or more, and preferably 100 mm or less, more preferably 70 mm or less.
＜4＞
The absorbent pad according to any one of <1> to <3>, wherein the vertical length of the fastening structure in the ventral portion is shorter than the vertical length of the fastening structure in the dorsal portion.
＜5＞
The absorbent pad described in <4>, wherein the vertical length of the fastening structure in the abdominal side portion is preferably 5 mm or more, more preferably 10 mm or more, and is preferably 50 mm or less, more preferably 25 mm or less.
＜6＞
The absorbent pad described in <4> or <5>, wherein the vertical length of the fastening structure in the rear portion is preferably 5 mm or more, more preferably 10 mm or more, and is preferably 70 mm or less, more preferably 50 mm or less.

＜７＞
The absorbent body has elastic leg cuffs extending in the longitudinal direction at positions outward in the lateral direction from the side edges of the absorbent body,
An absorbent pad as described in any one of <1> to <6>, wherein in the end region having the larger length, the stretch start position of the leg cuff coincides with the position of the inner edge of the fastening structure in the vertical direction, or is located beyond the inner edge and outward in the vertical direction.
＜8＞
The absorbent pad according to any one of <1> to <7>, wherein both lateral edges of the fastening structure are located laterally inward of both lateral edges of the absorbent pad.
＜9＞
The fastening structure extends discontinuously in the lateral direction,
The absorbent pad described in any one of <1> to <8>, wherein when the lateral length of the absorbent pad is H1 and the lateral length of the region is Q1, the ratio of length Q1 to length H1 is preferably 1% or more, more preferably 3% or more, and is preferably 10% or less, more preferably 7% or less.
＜10＞
A plurality of the fastening structures are intermittently arranged in the longitudinal direction in each end region of the longitudinal direction,
An absorbent pad as described in any one of <1> to <9>, wherein the length along the vertical direction from the vertical inner edge of the fastening structure located vertically most inward in one of the vertical end regions to one vertical end of the absorbent pad is longer than the length along the vertical direction from the vertical inner edge of the fastening structure located vertically most inward in the other vertical end region to the other vertical end of the absorbent pad.
<11>
The absorbent pad described in <10>, wherein in the abdominal portion, the distance between the fastening structure located most outward in the vertical direction and the fastening structure located most inward in the vertical direction, which are adjacent to each other in the vertical direction, is preferably 1 mm or more, more preferably 3 mm or more, and is preferably 40 mm or less, more preferably 30 mm or less.

＜12＞
The absorbent pad described in <10> or <11>, wherein in the back portion, the distance between the fastening structure located most outward in the vertical direction and the fastening structure located most inward in the vertical direction, which are adjacent to each other in the vertical direction, is preferably 3 mm or more, more preferably 5 mm or more, and is preferably 50 mm or less, more preferably 40 mm or less.
＜13＞
The absorbent pad according to any one of <10> to <12>, wherein in at least one of the end regions, a region between the two fastening structures is inelastic.
＜14＞
The absorbent pad described in any one of <10> to <13>, wherein, in a planar view of the absorbent pad in at least one of the end regions, of at least two of the fastening structures, the fastening structure located outermost in the vertical direction does not overlap with the absorbent body, and the fastening structure located innermost in the vertical direction overlaps with the absorbent body.
＜15＞
The absorbent pad according to any one of <10> to <14>, wherein in at least one of the end regions, the vertical width of the fastening structure located outermost in the vertical direction among at least two of the fastening structures is larger than the vertical width of the other fastening structures.
＜16＞
The absorbent pad according to any one of <10> to <14>, wherein in at least one of the end regions, the vertical width of the fastening structure located outermost in the vertical direction among at least two of the fastening structures is smaller than the vertical width of the other fastening structures.

＜１７＞
The absorbent pad according to any one of <10> to <16>, wherein in at least one of the end regions, the lateral width of the fastening structure located most inward in the vertical direction among at least two of the fastening structures is smaller than the lateral width of the other fastening structure.
＜18＞
The absorbent pad according to any one of <10> to <16>, wherein in at least one of the end regions, the lateral width of the fastening structure located most inward in the vertical direction among at least two of the fastening structures is greater than the lateral width of the other fastening structure.
＜19＞
When the back portion has at least three of the fastening structures, a fastening structure located most outward in the vertical direction among the three fastening structures is defined as a first fastening structure, a fastening structure located closer to the contents in the vertical direction than the first fastening structure is defined as a second fastening structure, and a fastening structure located more inward in the vertical direction than the second fastening structure is defined as a third fastening structure,
The absorbent pad described in any one of <10> to <18>, wherein the distance between the second side fastening structure and the third side fastening structure adjacent to each other in the vertical direction is preferably 1 mm or more, more preferably 3 mm or more, and is preferably 30 mm or less, more preferably 20 mm or less.
＜20＞
The absorbent pad according to any one of <1> to <19>, wherein the lateral width of the fastening structure in the end region located on the back side of the wearer is greater than the lateral width of the fastening structure in the end region located on the abdominal side.
＜21＞
The absorbent pad described in <20>, wherein the lateral length of the fastening structure in the end region having the smaller length is preferably 50 mm or more, more preferably 70 mm or more, and is preferably 200 mm or less, more preferably 180 mm or less.

＜22＞
The absorbent pad described in <20> or <21>, wherein the lateral length of the fastening structure in the end region having the larger length is preferably 70 mm or more, more preferably 100 mm or more, and is preferably 250 mm or less, more preferably 200 mm or less.
＜23＞
The absorbent pad according to any one of <1> to <22>, wherein the fastening structure is arranged on the skin-facing side.
＜24＞
a second leak-proof cuff extending laterally in an end region located on the abdominal side of the wearer and an end region located on the dorsal side of the wearer,
The absorbent pad according to any one of <1> to <23>, wherein each second leak-proof cuff is formed by arranging one or more second elastic members on the second leak-proof sheet.
＜25＞
The absorbent pad according to <24>, wherein the stress of the second elastic member in the ventral portion is greater than the stress of the second elastic member in the dorsal portion.
＜26＞
The second elastic member of the abdominal side portion and the second elastic member of the dorsal side portion are both thread-like,
The absorbent pad according to <24> or <25>, wherein the fineness of the second elastic member in the abdominal portion is greater than the fineness of the second elastic member in the dorsal portion.

＜27＞
The absorbent pad according to any one of <24> to <26>, wherein the elongation rate of the second elastic member of the ventral side portion is greater than the elongation rate of the second elastic member of the dorsal side portion.
＜28＞
The absorbent pad according to any one of <24> to <27>, wherein the number of the second elastic members in the ventral portion is greater than the number of the second elastic members in the dorsal portion.
＜29＞
The absorbent pad described in any one of <24> to <28>, wherein the length of the stretch region of the second elastic member in the ventral portion is longer than the length of the stretch region of the second elastic member in the dorsal portion.
＜30＞
The absorbent pad according to any one of <1> to <29>,
A holder that is attached around the waist of a wearer;
An absorbent article comprising:

The absorbent pad of the present invention is worn while removably fixed to a holder, and the ventral side of the pad does not interfere with the wearer's leg movements, maintaining a comfortable fit, and the dorsal side prevents leakage of excrement.

Claims (30)

1. The garment comprises a top sheet located close to the wearer's skin when worn, a back sheet located far from the wearer's skin, and an absorbent body located between the two sheets;
   A vertical direction and a horizontal direction perpendicular to the vertical direction are provided.
   An absorbent pad that is removably fixed to a holder that is attached in a circular shape around the waist of a wearer,
   Each end region in the longitudinal direction has a fastening structure that can be attached to and detached from the holder,
   The fastening structure extends continuously or discontinuously in the lateral direction;
   a length along the longitudinal direction from an inner edge of the fastening structure located in one longitudinal end region to the one longitudinal end of the absorbent pad is longer than a length along the longitudinal direction from an inner edge of the fastening structure located in the other longitudinal end region to the other longitudinal end of the absorbent pad;
   The absorbent pad is adapted so that the end region having the smaller length is positioned on the ventral side of the wearer and the end region having the larger length is positioned on the dorsal side of the wearer.
2. The absorbent pad according to claim 1, wherein the length along the vertical direction from the inner edge of the fastening structure in the abdominal portion to the vertical end of the absorbent pad is 10 mm or more and 70 mm or less.
3. The absorbent pad according to claim 1 or 2, wherein the length along the vertical direction from the inner edge of the fastening structure on the back side to the vertical end of the absorbent pad is 15 mm or more and 100 mm or less.
4. The absorbent pad according to any one of claims 1 to 3, wherein the vertical length of the fastening structure in the ventral portion is shorter than the vertical length of the fastening structure in the dorsal portion.
5. The absorbent pad according to claim 4, wherein the vertical length of the fastening structure in the abdominal portion is 5 mm or more and 50 mm or less.
6. The absorbent pad according to claim 4 or 5, wherein the length of the fastening structure in the vertical direction in the rear portion is 5 mm or more and 70 mm or less.
7. The absorbent body has elastic leg cuffs extending in the longitudinal direction at positions outward in the lateral direction from the side edges of the absorbent body,
   7. The absorbent pad according to claim 1, wherein in the end region having the greater length, the stretch start position of the leg cuff coincides with the position of the inner edge of the fastening structure in the longitudinal direction or is located beyond the inner edge and outward in the longitudinal direction.
8. The absorbent pad according to any one of claims 1 to 7, wherein both lateral edges of the fastening structure are laterally inward of both lateral edges of the absorbent pad.
9. The fastening structure extends discontinuously in the lateral direction,
   9. The absorbent pad according to claim 1, wherein when the lateral length of the absorbent pad is H1 and the lateral length of the region is Q1, the ratio of length Q1 to length H1 is 1% or more and 10% or less.
10. A plurality of the fastening structures are intermittently arranged in the longitudinal direction in each end region of the longitudinal direction,
    An absorbent pad as described in any one of claims 1 to 9, wherein the length along the vertical direction from the vertical inner edge of the fastening structure located vertically most inward in one of the vertical end regions to one vertical end of the absorbent pad is longer than the length along the vertical direction from the vertical inner edge of the fastening structure located vertically most inward in the other vertical end region to the other vertical end of the absorbent pad.
11. The absorbent pad according to claim 10, wherein the distance between the fastening structure located most outward in the vertical direction and the fastening structure located most inward in the vertical direction in the abdominal portion is 1 mm or more and 40 mm or less.
12. The absorbent pad according to claim 10 or 11, wherein the distance between the fastening structure located most outward in the vertical direction and the fastening structure located most inward in the vertical direction, which are adjacent to each other in the vertical direction, in the back portion, is 3 mm or more and 50 mm or less.
13. The absorbent pad according to any one of claims 10 to 12, wherein in at least one of the end regions, the area between the two fastening structures is inelastic.
14. The absorbent pad according to any one of claims 10 to 13, wherein, in a plan view of the absorbent pad in at least one of the end regions, of at least two of the fastening structures, the fastening structure located most outward in the vertical direction does not overlap with the absorbent body, and the fastening structure located most inward in the vertical direction overlaps with the absorbent body.
15. The absorbent pad according to any one of claims 10 to 14, wherein in at least one of the end regions, the vertical width of the fastening structure located outermost in the vertical direction among at least two of the fastening structures is greater than the vertical width of the other fastening structures.
16. The absorbent pad according to any one of claims 10 to 14, wherein in at least one of the end regions, the vertical width of the fastening structure located outermost in the vertical direction among at least two of the fastening structures is smaller than the vertical width of the other fastening structures.
17. The absorbent pad according to any one of claims 10 to 16, wherein in at least one of the end regions, the lateral width of the fastening structure located most inward in the longitudinal direction among at least two of the fastening structures is smaller than the lateral width of the other fastening structures.
18. The absorbent pad according to any one of claims 10 to 16, wherein in at least one of the end regions, the lateral width of the fastening structure located most inward in the longitudinal direction among at least two of the fastening structures is greater than the lateral width of the other fastening structures.
19. When the back portion has at least three of the fastening structures, a fastening structure located most outward in the vertical direction among the three fastening structures is defined as a first fastening structure, a fastening structure located closer to the contents in the vertical direction than the first fastening structure is defined as a second fastening structure, and a fastening structure located more inward in the vertical direction than the second fastening structure is defined as a third fastening structure,
    19. The absorbent pad according to claim 10, wherein a distance between the second side fastening structure and the third side fastening structure adjacent to each other in the vertical direction is 1 mm or more and 30 mm or less.
20. The absorbent pad according to any one of claims 1 to 19, wherein the lateral width of the fastening structure in the end region located on the back side of the wearer is greater than the lateral width of the fastening structure in the end region located on the ventral side of the wearer.
21. The absorbent pad according to claim 20, wherein the lateral length of the fastening structure in the end region where the length is small is 50 mm or more and 200 mm or less.
22. The absorbent pad according to claim 20 or 21, wherein the lateral length of the fastening structure in the end region having the larger length is 70 mm or more and 250 mm or less.
23. The absorbent pad according to any one of claims 1 to 22, wherein the fastening structure is disposed on the skin-facing side.
24. a second leak-proof cuff extending laterally in an end region located on the abdominal side of the wearer and an end region located on the dorsal side of the wearer,
    24. The absorbent pad according to claim 1, wherein each of the second leak-proof cuffs is formed by providing one or more second elastic members on the second leak-proof sheet.
25. The absorbent pad of claim 24, wherein the stress of the second elastic member in the ventral portion is greater than the stress of the second elastic member in the dorsal portion.
26. The second elastic member of the abdominal side portion and the second elastic member of the dorsal side portion are both thread-like,
    26. The absorbent pad according to claim 24 or 25, wherein the fineness of the second elastic member in the ventral portion is greater than the fineness of the second elastic member in the dorsal portion.
27. The absorbent pad according to any one of claims 24 to 26, wherein the elongation rate of the second elastic member in the ventral portion is greater than the elongation rate of the second elastic member in the dorsal portion.
28. The absorbent pad according to any one of claims 24 to 27, wherein the number of second elastic members in the ventral portion is greater than the number of second elastic members in the dorsal portion.
29. The absorbent pad according to any one of claims 24 to 28, wherein the length of the stretch region of the second elastic member in the ventral portion is longer than the length of the stretch region of the second elastic member in the dorsal portion.
30. An absorbent pad according to any one of claims 1 to 29;
    A holder that is attached around the waist of a wearer;
    An absorbent article comprising:

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