Absorbent pad

Abstract

To provide an absorbent pad worn removably fixed to a holder, which is unlikely to cause a gap to appear between the pad and a wearer, and is excellent in leakage proofness.SOLUTION: An absorbent pad 1 has a pad side fastening structure removable from a holder in an end area in a vertical direction, has a pad side fastening structure 8 removable from the holder 11 in an end area in the vertical direction X, and has a side cuff 6 extending along the vertical direction X in a side area in a horizontal direction Y. The side cuff 6 has in the end area a fixed area 68 fixed with the side cuff 6 fallen outward in the horizontal direction Y. A non-fixed area 69 other than the fixed area 68 in the side cuff 6 and a pad side fastening structure 8 are located at the same position in the vertical direction X.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an absorbent pad that is detachably fixed to a holder worn around the waist of a wearer and used thereby.

Background Art

[0002] As a kind of absorbent article such as a disposable diaper, it includes an absorbent pad that absorbs and holds body fluids such as urine, and a holder that is annularly worn around the waist of the wearer and holds the absorbent pad disposed in the crotch portion of the wearer. A separate type is known in which the absorbent pad is configured to be detachable from the holder. In the conventional separate type of absorbent article, as described in Patent Documents 1 to 3, a pad-side fastening structure that can be attached to and detached from a fastening structure (holder-side fastening structure) of the holder is provided in an end region in the longitudinal direction (the direction corresponding to the front-rear direction of the wearer) of the absorbent pad. Patent Documents 1 to 3 describe that a side cuff extending along the longitudinal direction is arranged in a side region of the absorbent pad.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, a side cuff typically includes a sheet forming the main body of the side cuff and an elastic member fixedly attached in an extended state to a free end portion on the inner side in the lateral direction (the direction corresponding to the left - right direction of the wearer) of the sheet. The free end portion of the sheet is made to stand up by the contraction of the elastic member. Also, the side cuff typically has fixed regions at both longitudinal ends where the side cuff is fixed so as not to stand up, and a non - fixed region between the two fixed regions is made to stand up.

[0005] In a separate - type absorbent article, when the wearer of the absorbent article raises a foot or the like, the absorbent pad may be pushed to the front side of the wearer by the foot. As described above, the absorbent pads described in Patent Documents 1 to 3 have a holder - side fastening structure in the end regions in the longitudinal direction. Depending on the positional relationship between the fixed region of the side cuff and the holder - side fastening structure, when the absorbent pad is pushed to the front side of the wearer, as shown in FIG. 10, the side cuff 91 does not stand up in the vicinity of the groin, and a gap 92 is generated between the wearer and the absorbent pad 9. As a result, there is a risk of leakage from the gap 92. Regarding this point, the techniques of Patent Documents 1 to 3 have not considered it at all, and there is room for improvement.

[0006] Therefore, an object of the present invention relates to providing an absorbent pad that is worn in a state of being detachably fixed to a holder, is less likely to generate a gap between the wearer and the absorbent pad, and has excellent leak - proof performance.

Means for Solving the Problems

[0007] The present invention relates to an absorbent pad including a surface sheet located closer to the skin of the wearer in the worn state, a back sheet located farther from the skin of the wearer, and an absorber located between the two sheets, having a longitudinal direction and a lateral direction orthogonal thereto, and being detachably fixed to a holder that is annularly worn around the waist of the wearer for use. Preferably, the absorbent pad has a pad - side fastening structure capable of attaching and detaching from the holder in the end regions in the longitudinal direction. Preferably, the absorbent pad has side cuffs extending along the longitudinal direction in the lateral side regions. Preferably, the side cuff has a fixed region in the end region where the side cuff is fixed in a state of falling outward in the lateral direction. Preferably, the non-fixed region of the side cuff other than the fixed region and the pad-side fastening structure of the absorbent pad are located at the same position in the longitudinal direction. Other features, effects, and embodiments of the present invention will be described below.

Advantages of the Invention

[0008] The absorbent pad of the present invention is less likely to form a gap with the wearer and has excellent leakage prevention performance.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the present invention will be described with reference to the drawings based on its preferred embodiments. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. The drawings are basically schematic, and the ratios of the respective dimensions may be different from the actual ones.

[0011] In FIGS. 1 to 4, an absorbent pad 1 which is an embodiment of the absorbent pad of the present invention is shown. Further, in FIG. 5, as an example of use of the absorbent pad of the present invention, a disposable diaper 10 including the absorbent pad 1 and a holder 11 for holding the absorbent pad 1 in a state of being worn by a wearer is shown. Further, in FIG. 6, a state of use of the diaper 10, that is, a state in which a wearer indicated by reference numeral 100 wears the diaper 10 is shown. As shown in FIGS. 5 and 6, the diaper 10 is such that the absorbent pad 1 and the holder 11 are coupled 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 portion in the height direction HD of the holder 11 and both side edge portions along the longitudinal direction (vertical direction X described later) of the absorbent pad 1. Note that the holder 11 is not a component of the absorbent pad 1.

[0012] Diaper 10, which is a separate-type absorbent article, has a reduced environmental impact compared to conventional non-separate-type absorbent articles because the absorbent pad 1 and the holder 11 can be detachably coupled via fastening structures 8 and 14. That is, when disposing of a conventional non-separate-type absorbent article in which the portion corresponding to the wearer's waist (the portion corresponding to the holder) and the portion corresponding to the wearer's crotch (the portion corresponding to the absorbent pad) are integrally inseparable after use, even if the portion corresponding to the holder is not soiled, it has to be disposed of together with the portion corresponding to the absorbent pad soiled with excrement. However, in the case of diaper 10, the holder 11 can remain as it is and only the absorbent pad 1 needs to be replaced with a new one, so the amount of waste discarded and the amount of carbon dioxide emissions are reduced compared to non-separate-type absorbent articles, contributing to the reduction of the environmental impact. Also, during the wearing of diaper 10, since the absorbent pad 1 is detachably fixed to the holder 11, the operation of replacing the absorbent pad 1 with a new one is simple, and the burden of the replacement operation for diaper 10 is significantly reduced compared to conventional non-separate-type absorbent articles.

[0013] The absorbent pad 1 is detachably fixed to a holder 11 that is annularly worn around the wearer's waist and used. Here, the holder 11 will be briefly described with reference to FIG. 5. The holder 11 is annularly worn around the wearer's waist and holds the absorbent pad 1 in a state where it is worn on the wearer. It has a height direction HD along the wearer's height direction and a circumferential direction CD along the body circumference direction. The holder 11 has a ventral side portion 11F disposed on the ventral side (front side) of the wearer and a dorsal side portion 11R disposed on the dorsal side (rear side) of the wearer, and includes a holder main body portion 12 that forms the main body of the holder 11. The holder main body portion 12 is mainly composed of a sheet-like member such as a non-woven fabric. Typically, it includes a laminated structure of an outer layer sheet that forms the non-skin-facing surface (outer surface) of the holder main body portion 12 and an inner layer sheet that forms the skin-facing surface (inner surface) of the holder main body portion 12. The holder 11 forms an annulus by joining both longitudinal ends of the holder main body portion 12 of the ventral side portion 11F and the dorsal side portion 11R to each other by known joining means such as fusion or adhesive, and has a pair of joining portions S, S between the ventral side portion 11F and the dorsal side portion 11R and a waist opening WH. The joining portion S corresponds to the side seal portion in a general non-separate type of panty disposable diaper. Elastic members 13 that are stretchable in a direction orthogonal to the height direction HD are intermittently arranged in plurality in the height direction HD on the holder main body portion 12 of each of the ventral side portion 11F and the dorsal side portion 11R. Thereby, the holder 11 has elasticity in the circumferential direction CD. A holder-side fastening structure 14 is arranged on the non-skin-facing surface (outer surface) of the holder main body portion 12. By fastening the pad-side fastening structure 8 of the absorbent pad 1 to this holder-side fastening structure 14, the absorbent pad 1 can be detachably fastened to the holder 11. Since the holder 11 does not contain an absorber for absorbing and retaining moisture, if a washable member is used as a constituent member of the holder main body portion 12, it can be washed and reused repeatedly. The fact that the holder 11 is washable leads to a reduction in the amount of garbage discarded and carbon dioxide emissions, and can contribute to a reduction in the environmental load. Note that the holder 11 is merely one embodiment of the holder to which the absorbent pad of the present invention is applicable. The holder to which the absorbent pad of the present invention is applicable only needs to 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 the holder 11. For example, the holder to which the absorbent pad of the present invention is applicable only needs to be annular when worn on the body. It may be annular in advance like the holder 11, or may be in the form of a strip that is long in one direction before being worn on the body, and the one end and the other end in the longitudinal direction are engaged to form an annular shape when worn.

[0014] In this specification, the "skin-facing surface" refers to the surface of a wearable article such as an absorbent article, a holder, an absorbent pad, or a component thereof (for example, the absorbent body of the absorbent pad) that faces the wearer's skin side in the worn state of the wearable article, and the "non-skin-facing surface" refers to the surface of the wearable article or a component thereof that faces the side opposite to the skin side in the worn state of the wearable article.

[0015] Hereinafter, the absorbent pad 1 will be described in detail. The absorbent pad 1 includes a surface sheet 3 located on the side closer to the wearer's skin in the worn state, a back sheet 4 located on the side farther from the wearer's skin, and an absorbent body 5 located between the two sheets 3 and 4, and has a longitudinal direction X and a lateral direction Y orthogonal thereto. The longitudinal direction X of the absorbent pad 1 corresponds to the front-rear direction passing through the wearer's crotch and also corresponds to the height direction HD of the holder 11, and the lateral direction Y of the absorbent pad 1 corresponds to the circumferential direction CD of the holder 11.

[0016] As shown in FIG. 2, the absorbent pad 1 has a crotch part M disposed at the crotch of the wearer, a ventral part F disposed on the ventral (front) side of the wearer with respect to the crotch part M, and a dorsal part R disposed on the dorsal (rear) side of the wearer with respect to the crotch part M. The crotch part M is located at the central part in the longitudinal direction X of the absorbent pad 1 and includes an excretion part facing part (not shown) that faces the excretion part such as the penis of the wearer during wearing. As shown in FIG. 5, when the absorbent pad 1 is properly fixed to the holder 11, the ventral part F of the absorbent pad 1 includes a portion overlapping with the ventral part 11F of the holder 11, and the dorsal part R of the absorbent pad 1 includes a portion overlapping with the dorsal part 11R of the holder 11, but the crotch part M of the absorbent pad 1 does not overlap with the holder 11. In the present embodiment, the absorbent pad 1 has a rectangular shape in plan view and is symmetrically formed on one side and the other side with respect to the horizontal center line CLy in the unfolded and maximum extended state as shown in FIG. 2. The horizontal center line CLy is a virtual straight line that bisects the absorbent pad 1 in the unfolded and maximum extended state as shown in FIG. 2 in the horizontal direction Y and extends in the longitudinal direction X.

[0017] In this specification, the “unfolded and maximum extended state” means a state in which a wearing article such as an absorbent article, a holder, or an absorbent pad is spread out flat to an unfolded state, and the elastic members of each part of the wearing article in the unfolded state are maximally extended until it becomes the same as the dimensions when it is spread out flat in a state where the design dimensions, that is, the influence of the elastic members is completely excluded. In the case of an absorbent article having a side seal part such as the joint part S of the holder 11 described above, the absorbent article is separated at the side seal part and spread out flat to the unfolded state.

[0018] In this embodiment, the absorbent pad 1 includes an absorbent main body 2 containing a top sheet 3, a back sheet 4, and an absorber 5, a pair of side cuffs (hereinafter also referred to as "first leakage-preventing cuffs") 6, 6 disposed along both side portions (both end portions in the transverse direction Y) along the longitudinal direction X of the absorbent main body 2, and a pair of second leakage-preventing cuffs 7, 7 disposed in both end regions in the longitudinal direction X of the absorbent main body 2. The first leakage-preventing cuff 6 is located in the end region in the transverse direction Y and prevents the excrement from leaking outward in the transverse direction Y, and can be referred to as a "transverse leakage-preventing cuff". The second leakage-preventing cuff 7 is located in the end region in the longitudinal direction X and prevents the excrement from leaking outward in the longitudinal direction X, and can be referred to as a "longitudinal leakage-preventing cuff". The "end region in the longitudinal direction" mentioned here can be the region of the end in the longitudinal direction X when the absorbent pad 1 is divided into three parts in the longitudinal direction X (regions other than the center in the longitudinal direction X).

[0019] The absorbent main body 2 forms the main body of the absorbent pad 1 and has a function of absorbing and retaining excrement such as urine. In this embodiment, the absorbent main body 2 has a shape that is long in the longitudinal direction X, and its longitudinal direction coincides with the longitudinal direction X, and extends in the longitudinal direction X from the ventral side portion F to the dorsal side portion R. The top sheet 3 forms the skin-facing surface of the absorbent main body 2 and can come into contact with the wearer's skin during wearing. The back sheet 4 forms the non-skin-facing surface of the absorbent main body 2. The top sheet 3 contacts the skin-facing surface of the absorber 5 and covers the entire area thereof, and the back sheet 4 contacts the non-skin-facing surface of the absorber 5 and covers the entire area thereof. The absorber 5 includes an absorbent core 51 capable of absorbing and retaining body fluids and a core wrap sheet 52 covering the outer surface including the skin-facing surface and the non-skin-facing surface of the absorbent core 51. In the present invention, the absorber 5 only needs to include at least the absorbent core 51, and the core wrap sheet 52 may be absent. The plurality of members 3, 4, 5 constituting the absorbent main body 2 are integrated by known joining means such as an adhesive.

[0020] As the constituent members of the absorbent main body 2, those commonly used in this type of absorbent article can be used without particular limitation. As the surface sheet 3, a liquid-permeable sheet can be used. For example, non-woven fabrics produced by various manufacturing methods, apertured non-woven fabrics which are non-woven fabrics having through-holes, uneven non-woven fabrics having uneven shapes provided on at least one surface of the non-woven fabric, apertured films which are resin films having through-holes, etc. can be mentioned. Further, the surface sheet 3 may have a single-layer structure, or may have a laminated structure in which one or more kinds of layers are laminated in plurality. As the back sheet 4, a liquid-impermeable or liquid-hardly-permeable or water-repellent sheet can be used. For example, non-woven fabrics, resin films, laminates of resin films and non-woven fabrics, etc. can be mentioned. The absorbent core 51 typically mainly comprises a water-absorbing material, and as the water-absorbing material, it contains one or more selected from fibrous materials such as wood pulp and water-absorbing polymers. 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 lateral direction Y or the thickness direction. The absorbent core 51 may be of a stacked type mainly composed of a fibrous material, or may be of a sheet type including a fibrous sheet and water-absorbing polymer particles fixed thereto. The stacked-type absorbent core can be produced, for example, using a known stacking device equipped with a stacking drum. The sheet-type absorbent core has, for example, a configuration in which water-absorbing polymer particles are interposed between two opposing fibrous sheets. The core wrap sheet 52 has liquid permeability and is typically made of paper, non-woven fabric, etc. The absorber 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 leakage-preventing groove having an opening on the skin-facing surface of the absorber 5. The absorber 5 may have a partially different density, and in that case, the relatively high-density portion may be a portion formed by a squeezing process such as embossing.

[0021] As shown in FIGS. 2 and 3, the first leak-proof cuff 6 is arranged in the side region in the lateral direction Y so as to extend along the longitudinal direction X. The first leak-proof cuff 6 includes a first leak-proof sheet 60 that forms the main body of the first leak-proof cuff 6, and a first elastic member 61 that is fixed to the first leak-proof sheet 60 and is stretchable in the longitudinal direction X. The first leak-proof sheet 60 forms a part of the skin-facing surface of the absorbent pad 1. The first leak-proof sheet 60 is folded back in the lateral direction Y, and the first elastic member 61 is disposed between the opposed first leak-proof sheets 60, 60 by this folding. The first leak-proof cuff 6 (the first leak-proof sheet 60) is continuously arranged along the side portion along the longitudinal direction X of the absorbent main body 2 over substantially the entire length in the longitudinal direction X of the absorbent main body 2. The first leak-proof cuff 6 has an upright portion 62 that stands up toward the wearer's skin when the absorbent pad 1 (diaper 10) is worn, at least in the crotch portion M. The upright portion 62 stands up toward the wearer's skin side with the fixed portion 63 as the starting point of standing up. The upright portion 62 is a non-fixed portion of the first leak-proof sheet 60 with respect to other members. The fixed portion 63 is a portion where the first leak-proof sheet 60 is fixed to other members by known joining means such as an adhesive or heat fusion. In the illustrated form, the other member is the surface sheet 3.

[0022] The first leakage-preventing cuff 6 has a fixed region 68 fixed in a state of lying down outward in the lateral direction Y at the end regions in the longitudinal direction X. At both end regions in the longitudinal direction X of the first leakage-preventing cuff 6, there are formed standing inhibition portions 64 which are portions where the standing of the first leakage-preventing sheet 60 is inhibited, and by these standing inhibition portions 64, the first leakage-preventing cuff 6 is fixed in a state of lying down outward in the lateral direction Y. The first leakage-preventing cuff 6 is bent and lies down outward in the lateral direction Y at a bent portion extending in the longitudinal direction X between the fixed portion 63 and the free end of the standing portion 62. The fixed region 68 is formed in the ventral side portion F and the dorsal side portion R, and the region along the longitudinal direction X sandwiched between the two fixed regions 68, 68 in the first leakage-preventing cuff 6, that is, the region other than the fixed region 68 is a non-fixed region 69. The standing portion 62 is included in the non-fixed region 69. The fixed region 68 is a region where the portion of the first leakage-preventing sheet 60 that is in the same position as the standing portion 62 in the lateral direction Y is joined to other members such as the surface sheet 3 and / or other portions other than the standing portion 62 of the first leakage-preventing sheet 60 by known joining means such as an adhesive or fusion. By forming a pair of fixed regions 68, 68 at both end regions in the longitudinal direction X of the first leakage-preventing cuff 6, when the absorbent pad 1 (diaper 10) is worn, the standing portion 62 in the non-fixed region 69, which is the region sandwiched between the two fixed regions 68, 68 in the first leakage-preventing cuff 6, stands up toward the wearer's skin side with the fixed portion 63 as the standing starting point due to the contraction of the first elastic member 61. Thereby, so-called lateral leakage, in which excrement such as urine excreted by the wearer leaks out from the absorbent pad 1 outward in the lateral direction Y, is suppressed. As the first leakage-preventing sheet 60, those used as the material of the leakage-preventing cuff in this kind of absorbent article can be used without particular limitation, and for example, a single-layer or multi-layer water-repellent non-woven fabric, a laminate of a resin film and a non-woven fabric, etc. can be used. Also, the number of arrangements of the first elastic member 61 is not particularly limited, and it may be one or a plurality.

[0023] In the present embodiment, as shown in FIG. 3, a leg cuff 65 is provided at a leg edge portion of the absorbent pad 1 corresponding to the wearer's leg circumference. The leg edge portion typically includes both side edge portions along the longitudinal direction X of the absorbent pad 1 in the crotch portion M. The leg cuff 65 is configured to include a first leak-proof sheet 60 that constitutes the first leak-proof cuff 6 and an elastic member 66 for forming the leg cuff. More specifically, among both side edge portions along the longitudinal direction X of the first leak-proof sheet 60, one (inner edge portion) is the above-described standing portion 62, and the other (outer edge portion) is fixed to other members (in this embodiment, the surface sheet 3 and the back sheet 4) outside in the lateral direction Y of the absorbent body 5. At the fixing portion of the first leak-proof sheet 60 to the other members, an elastic member 66 for forming the leg cuff that extends in the longitudinal direction X is fixed so as to be stretchable and contractible in the same direction, and the leg cuff 65 is formed. The elastic member 66 for forming the leg cuff is disposed at least at the side edge portion along the longitudinal direction X of the absorbent pad 1 in the crotch portion M. In the worn state or natural state of the absorbent pad 1, a leg gather that is substantially continuous in the longitudinal direction X is formed at the leg edge portion due to the contraction of the elastic member 66 for forming the leg cuff.

[0024] As shown in FIGS. 2 and 4, the second leak-proof cuff 7 includes a second leak-proof sheet 70 that forms the main body of the second leak-proof cuff 7 and a second elastic member 71 that is fixed to the second leak-proof sheet 70 and is stretchable and contractible in the lateral direction Y. The second leak-proof sheet 70 forms at least a part of the skin-facing surface of the ventral portion F or the dorsal portion R of the absorbent pad 1. As the second leak-proof sheet 70, the same one as the first leak-proof sheet 60 can be used. In the present embodiment, the configurations of the second leak-proof cuffs 7 are the same in the ventral portion F and the dorsal portion R. Unless otherwise specified, the description of one of the second leak-proof cuffs 7 in the ventral portion F and the dorsal portion R is also appropriately applicable to the other second leak-proof cuff 7.

[0025] In this embodiment, the second leak - proof sheet 70 has a quadrangular shape in plan view and covers substantially the entire skin - facing surface of the end region in the longitudinal direction X of the absorbent body 2. As shown in FIG. 4, among both ends of the second leak - proof sheet 70 in the longitudinal direction X, the longitudinal outer ends 70X1 located outward in the longitudinal direction X coincide with the longitudinal ends (the longitudinal ends on the ventral side F or the dorsal side R) of the absorbent body 2 where the second leak - proof sheet 70 is disposed. Both ends 70Y, 70Y of the second leak - proof sheet 70 in the lateral direction Y are in the vicinity of both ends (both side edges along the longitudinal direction X) of the absorbent body 2 in the lateral direction Y. That is, in this embodiment, the longitudinal outer ends 70X1 of the second leak - proof sheet 70 coincide with the longitudinal outer ends 1X of the absorbent pad 1, and the lateral ends 70Y of the second leak - proof sheet 70 are in the vicinity of the lateral outer ends (side edges along the longitudinal direction X) 1Y of the absorbent pad 1. Among both ends of the second leak - proof sheet 70 in the longitudinal direction X, the longitudinal inner ends 70X2 located inward in the longitudinal direction X extend parallel to the lateral direction Y.

[0026] As shown in FIG. 4, the second leak - proof sheet 70 has a fixed portion 72 fixed to other members and a non - fixed portion 73 not fixed to other members. The "other members" to which the second leak - proof sheet 70 is fixed are members disposed opposite to the second leak - proof sheet 70, for example, the surface sheet 3, the first leak - proof sheet 60, etc. The second leak - proof sheet 70 and the other members are joined by fixing means (not shown). The arrangement region of the fixing means is the same as the fixed portion 72 (the hatched region in FIG. 4). The fixing means is not particularly limited, and known fixing means such as adhesives and heat - sealing can be used.

[0027] As shown in FIG. 4, the second leak - proof cuff 7 has a base end portion 74 including a fixed portion 72 with other members and a free end portion 75 located inward in the longitudinal direction X from the base end portion 74 and including a non - fixed portion 73 with other members. The base end portion 74 and the free end portion 75 each have a strip - like shape extending in the lateral direction Y in plan view. In this embodiment, the base end portion 74 is located at the outermost in the longitudinal direction X of the absorbent pad 1, and the free end portion 75 is adjacent to the base end portion 74 in the longitudinal direction X.

[0028] The base end portion 74 is a region where the second leak-proof cuff 7 is substantially fixed to other members over the entire length in its lateral direction Y, and does not include a region having a certain area or more intentionally formed as a non-fixed portion like the non-fixed portion 73. In the base end portion 74, as shown in FIG. 4, the fixing portion 72 continuously extends over the entire length in the lateral direction Y of the absorbent pad 1 (absorbent main body 2). In the fixing portion 72, as described above, the second leak-proof sheet 70 and other members are fixed by fixing means. The arrangement pattern of the fixing means in the base end portion 74 is not particularly limited. For example, when the fixing means is an adhesive, it may be in a form in which the fixing means is applied over the entire area of the base end portion 74 (so-called solid coating form), or may be in a form intermittently applied to the base end portion 74. Also, in the present invention, the free end portion 75 only needs to include at least the non-fixed portion 73, and may include the fixing portion 72. In the present embodiment, as shown in FIG. 4, the free end portion 75 includes the fixing portion 72. Specifically, the non-fixed portion 73 is located between a pair of adjacent fixing portions 72, 72 in the lateral direction Y. The non-fixed portion 73 is located at the central portion in the lateral direction Y of the absorbent pad 1.

[0029] As will be described below, the second leak-proof cuff 7 is configured such that the free end portion 75 stands up starting from the base end portion 74 in the worn state of the absorbent pad 1. As shown in FIG. 4, a second elastic member 71 extending in the lateral direction Y is disposed on the free end portion 75 of the second leak-proof cuff 7, more specifically, on the end portion in the longitudinal direction X (inner end portion in the longitudinal direction X) on the inner side in the longitudinal direction X of the longitudinal inner end 70X2 of the second leak-proof sheet 70 so as to be stretchable in the lateral direction Y. In the present embodiment, the second elastic member 71 is disposed so as to straddle a pair of fixing portions 72, 72 and the non-fixed portion 73 therebetween in the lateral direction Y. However, in the present invention, the arrangement pattern of the second elastic member 71 is not particularly limited. For example, in the form shown in FIG. 4, the second elastic member 71 may be disposed only in a region overlapping the non-fixed portion 73 in plan view and may not extend to a pair of fixing portions 72, 72 on both sides of the non-fixed portion 73 in the lateral direction Y. Alternatively, the fixing portion 72 may not be disposed in a region overlapping the second elastic member 71 and its virtual extension line in plan view (a region at the same position as the second elastic member 71 in the longitudinal direction X). In the worn state or natural state of the absorbent pad 1, due to the contraction of the second elastic member 71, the non-fixed portion 73 at the free end 75 of the second leakage-preventing cuff 7 (second leakage-preventing sheet 70) stands up on the wearer's skin side, and an internal space 76 (see Fig. 3(b)) defined by the standing non-fixed portion 73 and another member (such as the absorbent main body 2) facing it, and a pocket portion 78 (see Fig. 1) having an opening 77 that opens inward in the longitudinal direction X are formed. The non-fixed portion 73 at the free end 75 of the second leakage-preventing cuff 7 is a stretchable region that can expand and contract in the lateral direction Y. When the excrement excreted in the crotch portion M of the absorbent pad 1 (diaper 10) migrates to the ventral side portion F or the dorsal side portion R during the wearing of the absorbent pad 1, the excrement that has migrated from the crotch portion M is accommodated in the internal space 76 of the pocket portion 78 through the opening 77, so it does not migrate to the holder 11 to which the absorbent pad 1 is fastened. Therefore, by providing the absorbent pad 1 with the pocket portion 78, the inconvenience of excrement adhering to the holder 11 is prevented, and the usable period of the holder 11 is extended.

[0030] The absorbent pad 1 has a pad-side fastening structure 8 at the end region in the longitudinal direction X that can be detached from and attached to the holder 11. In this embodiment, as shown in Fig. 1 and the like, the pad-side fastening structure 8 extends in the lateral direction Y. Specifically, the pad-side fastening structure 8 is provided on the skin-facing surface (inner surface) of the absorbent pad 1, has a rectangular shape in plan view, and its longitudinal direction is aligned with the lateral direction Y, and is continuous over the entire length of the absorbent pad 1 in the lateral direction Y.

[0031] 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 (such as the surface sheet 3) 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 include the second leak-proof sheet 70 (the 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, when the excrement excreted in the crotch portion M of the absorbent pad 1 migrates to the ventral portion F or the dorsal portion R, there is a concern that the excrement will adhere to the holder 11 and the service life of the holder 11 will be shortened. However, in the absorbent pad 1 of this embodiment, since 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, such a concern is eliminated.

[0032] As the pad-side fastening structure 8, any structure that can be detachably fastened to the holder-side fastening structure 14 (see FIG. 5) of the holder 11 may be used, and a known detachable fastening structure can be used without particular limitation. For example, one or both of the pad-side fastening structure 8 and the holder-side fastening structure 14 may include an adhesive portion formed by applying an adhesive, and the pad-side fastening structure 8 may be detachably fastened to the holder-side fastening structure 14 through the adhesive portion.

[0033] In this embodiment, a mechanical surface fastener is adopted as the fastening structure including the pad-side fastening structure 8 and the holder-side fastening structure 14. The "mechanical surface fastener" as used herein refers to a fastener in which a face member (male member) having hook members (engaging members) formed of hook-shaped protrusions arranged on one surface and a face member (female member) having loop members formed of pile-shaped protrusions arranged on one surface are paired. A specific example of the mechanical surface fastener is Velcro (registered trademark). Specifically, in this embodiment, the pad-side fastening structure 8 is the male member of the mechanical surface fastener, and typically has a configuration in which a large number of the hook members are arranged on the surface of a base material made of a resin film, woven fabric, non-woven fabric, or the like. The holder-side fastening structure 14 is the female member of the mechanical surface fastener, and includes a base material and a fastened 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.

[0034] One of the main features of the absorbent pad 1 is that the non-fixed region 69 in the first leak-proof cuff 6 and the pad-side fastening structure 8 are located at the same position in the longitudinal direction X. In the present embodiment, as shown in FIG. 6, in the longitudinal direction X, the outer end of the non-fixed region 69 is located outside the outer end of the pad-side fastening structure 8, and the pad-side fastening structure 8 does not extend from the non-fixed region 69. In FIGS. 2 and 6, the region with downward-slanting hatching is the fixed region 68. Note that in FIG. 6, for the sake of convenience of explanation, the illustration of the absorbent main body 2 and the like is omitted. The advantages of the non-fixed region 69 in the first leak-proof cuff 6 and the pad-side fastening structure 8 being located at the same position in the longitudinal direction X are as follows.

[0035] When the non-fixed region in the first leak-proof cuff and the pad-side fastening structure are not located at the same position in the longitudinal direction, that is, when the fixed region in the first leak-proof cuff and the pad-side fastening structure are located at the same position in the longitudinal direction, the first leak-proof cuff is fixed in the region overlapping the pad-side fastening structure, so it is difficult to stand up in the vicinity of the pad-side fastening structure. Therefore, when the wearer of a separate-type diaper raises a leg and the absorbent pad is pushed to the front side of the wearer by the leg, as shown in FIG. 10, the first leak-proof cuff 91 does not stand up sufficiently in the vicinity of the wearer's groin, and a gap 92 is generated between the wearer and the absorbent pad 9, and as a result, there is a risk of leakage from the gap 92.

[0036] On the contrary, as in the present embodiment, when the non-fixed region 69 in the first leak-proof cuff 6 and the pad-side fastening structure 8 are located at the same position in the longitudinal direction X, the first leak-proof cuff 6 is not fixed in the region overlapping the pad-side fastening structure 8, so it is easy to stand up even in the vicinity of the pad-side fastening structure 8. Therefore, even when the absorbent pad 1 is pushed to the front side of the wearer, as shown in FIG. 7, the first leak-proof cuff 6 stands up sufficiently in the vicinity of the wearer's groin, and it is difficult for a gap to be generated between the wearer and the absorbent pad 1, and leakage from the gap can be prevented.

[0037] From the viewpoint of making the above-described effects more remarkable, the ratio La / L of the length La (see FIG. 6) in the longitudinal direction X of the fixing region 68 of the first leak-proof cuff 6 to the length L (see FIG. 2) in the longitudinal direction X of the first leak-proof cuff 6 is preferably 0.1 or less, more preferably 0.08 or less, and still more preferably 0.05 or less. Also, from the viewpoint of ensuring a sufficient length in the longitudinal direction X of the standing portion 62, the ratio La / L is preferably 0.01 or more, more preferably 0.02 or more, and still more preferably 0.03 or more. Further, from the viewpoint of achieving both of these, the ratio La / L is preferably 0.01 or more and 0.1 or less, more preferably 0.02 or more and 0.08 or less, and still more preferably 0.03 or more and 0.05 or less. In the absorbent pad 1 of the present embodiment, since it has the fixing region 68 on both the ventral side portion F and the dorsal side portion R, it is preferable that the ratio La / L is within the above-described range in either one of the fixing region 68 of the ventral side portion F and the fixing region 68 of the dorsal side portion R, and it is more preferable that the ratio La / L is within the above-described range in both the fixing region 68 of the ventral side portion F and the fixing region 68 of the dorsal side portion R. The fixing region 68 of the ventral side portion F and the fixing region 68 of the dorsal side portion R may have the same length La in the longitudinal direction X or may be different.

[0038] It is also preferable that the absorbent pad 1 has a region where, in plan view of the absorbent pad 1, the non-fixed region 69 of the first leak-proof cuff 6 and the side region in the lateral direction Y of the pad-side fastening structure 8 do not overlap. By doing so, the first leak-proof cuff 6 is more likely to stand up in the vicinity of the pad-side fastening structure 8, so that a gap is less likely to occur between the wearer and the absorbent pad 1, and leakage from the gap can be more effectively prevented. In the present embodiment, as shown in FIG. 6, the lateral edge in the lateral direction Y of the pad-side fastening structure 8 is located between the both side edges in the lateral direction Y of the non-fixed region 69, and a part of the side region of the pad-side fastening structure 8 and the non-fixed region 69 overlap. In other words, the absorbent pad 1 has a region where, in plan view of the absorbent pad 1, the non-fixed region 69 of the first leak-proof cuff 6 and the side region in the lateral direction Y of the pad-side fastening structure 8 do not overlap, and a region where the non-fixed region 69 and the side region overlap. Instead of this, the lateral edge in the lateral direction Y of the pad-side fastening structure 8 does not reach the inner-side edge in the lateral direction Y of the non-fixed region 69, and the side region of the pad-side fastening structure 8 and the non-fixed region 69 may not completely overlap.

[0039] As described above, the first leak-proof cuff 6 has elasticity along the longitudinal direction X. It is preferable that the start position 6A of the expansion and contraction of the first leak-proof cuff 6 coincides with the position of the inner end edge 8A in the longitudinal direction X of the pad-side fastening structure 8 or is located outward in the longitudinal direction X beyond the inner end edge 8A. The advantages of the positional relationship between the start position 6A of the expansion and contraction of the first leak-proof cuff 6 and the inner end edge 8A of the pad-side fastening structure 8 as described above will be described later.

[0040] In the present embodiment, a pair of start positions 6A of the expansion and contraction of the first leak-proof cuff 6 are formed at both end regions in the longitudinal direction X of the first elastic member 61. The region outward in the longitudinal direction X from the start position 6A of the expansion and contraction in the first leak-proof cuff 6 does not have elasticity. The start position 6A of the expansion and contraction in the first leak-proof cuff 6 and the part inward in the longitudinal direction X from the position 6A have elasticity, and the standing portion 62 of the first leak-proof cuff 6 is formed at the part.

[0041] In one embodiment, the start position 6A of the expansion and contraction of the first leak-proof cuff 6 is, for example, the position of the end of the first elastic member 61 as shown in FIG. 2. As another embodiment of the start position 6A of the expansion and contraction, for example, it can be an end fixing portion (not shown) formed by fixing both end regions in the longitudinal direction X of the first elastic member 61 to the first leak-proof sheet 60 with an adhesive. This end fixing portion is different from the fixing portion 63 described above. As in the present embodiment, it is preferable that the ends of all the first elastic members 61 are located outside in the longitudinal direction X beyond the inner edge 8A, thereby forming the start position 6A of the expansion and contraction. In the present invention, at least one first elastic member 61 may be fixed at the position of the inner edge 8A or at a position outside in the longitudinal direction X than the inner edge 8A. In this case, the start position 6A of the expansion and contraction of the first leak-proof cuff 6 is the position or the fixed position of the end of the first elastic member 61 having the longest length.

[0042] Also, as described above, the leg cuff 65 also has elasticity along the longitudinal direction X. As shown in FIGS. 2 and 3, the leg cuff 65 is disposed at a position outside in the lateral direction Y than both side edges in the lateral direction Y of the absorber 5. And it is preferable that the start position 6B of the expansion and contraction of the leg cuff 65 coincides with the position of the inner edge 8A in the longitudinal direction X in the pad-side fastening structure 8 or is located outside in the longitudinal direction X beyond the inner edge 8A. The advantages of the above-described positional relationship between the start position 6B of the expansion and contraction of the leg cuff 65 and the inner edge 8A of the pad-side fastening structure 8 will be described later. In a plan view, the positions of the leg cuff 65 and the pad-side fastening structure 8 may overlap each other as shown in FIG. 3, or alternatively, they may not overlap each other.

[0043] In the present embodiment, the leg cuff 65 is located outside in the lateral direction Y than the first leak-proof cuff 6. The start positions 6B of the expansion and contraction of the leg cuff 65 are formed in a pair at both end regions in the longitudinal direction X of the elastic member 66 for forming the leg cuff. The portion outside in the longitudinal direction X than the start position 6B of the expansion and contraction in the leg cuff 65 does not have elasticity. The start position 6B of the expansion and contraction in the leg cuff 65 and the portion inside in the longitudinal direction X than the position 6B have elasticity, and leg gathers are formed in the portion.

[0044] The expansion and contraction start position 6B of the leg cuff 65 is, similar to the embodiment of the expansion and contraction start position 6A of the first leak - proof cuff 6, for example, an aspect that is the end of the elastic member 66 for forming the leg cuff, or an end fixing portion (not shown) formed by fixing both end regions in the longitudinal direction X of the elastic member 66 for forming the leg cuff to the first leak - proof 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 the ends of all the elastic members 66 for forming the leg cuff are located outward in the longitudinal direction X beyond the inner edge 8A, thereby forming the expansion and contraction start position 6B. In the present invention, at least one elastic member 66 for forming the leg cuff may be fixed at the position of the inner edge 8A or at a position outward in the longitudinal direction X of the inner edge 8A. In this case, the expansion and contraction start position 6B of the leg cuff 65 is the position or the fixed position of the end of the elastic member 66 for forming the leg cuff having the longest length.

[0045] As described above, by configuring the expansion and contraction start positions 6A and 6B of the first leak - proof cuff 6 and the leg cuff 65 to coincide with the position of the inner edge 8A in the longitudinal direction X in the pad - side fastening structure 8 or to be located outward in the longitudinal direction X beyond the inner edge 8A, the first leak - proof cuff 6 can effectively stand up more easily from the position of the inner edge 8A in the longitudinal direction X of the pad - side fastening structure 8 and its vicinity. Therefore, when the absorbent pad 1 is fixed to the holder and worn, a gap between the absorbent pad and the holder is less likely to occur. In addition, since the leg gathers are formed up to the upper part around the wearer's leg, when the absorbent pad 1 is fixed to the holder and worn, a gap between the absorbent pad and the holder is less likely to occur. As a result, leakage of excrement from between the absorbent pad and the holder is less likely to occur, and the leak - proof property is further excellent. Furthermore, since the erected first leak - proof cuff 6 and the leg gathers are arranged in a state of being in close contact with the wearer, the fitting property of the wearing state of the absorbent pad 1 is improved, and the usability is excellent.

[0046] Also, as shown in FIG. 4, when the absorbent pad 1 is viewed along the longitudinal direction X, it is preferable that the leg cuff 65 and the pad-side fastening structure 8 are arranged so as not to overlap each other. This is synonymous with the fact that in the plan view of the absorbent pad 1, all of the constituent members of the leg cuff 65 and the pad-side fastening structure 8 do not overlap each other. In order to achieve such an arrangement position, for example, the arrangement position of the leg cuff 65 in the plan view of the absorbent pad 1 may be configured to be located outward in the lateral direction Y from both side edges in the lateral direction Y of the pad-side fastening structure 8. With such an arrangement relationship, the leak prevention property, fit, and usability in the worn state of the absorbent pad 1 can be further enhanced, and the usability is also improved by making it difficult to inhibit the movement of the wearer's legs.

[0047] Next, another preferred embodiment of the absorbent pad of the present invention will be described with reference to FIGS. 8 and 9. In the absorbent pad 1 shown in FIG. 8, in the plan view of the absorbent pad 1, the first elastic member 61 and the pad-side fastening structure 8 overlap. By doing so, the first leak prevention cuff 6 becomes even more likely to stand up in the vicinity of the pad-side fastening structure 8, so that a gap is even less likely to occur between the wearer and the absorbent pad 1, and leakage from the gap can be more effectively prevented. When the absorbent pad 1 has a plurality of first elastic members 61, the pad-side fastening structure 8 may overlap all of the first elastic members 61 or only some of the first elastic members 61.

[0048] In the absorbent pad 1 shown in Fig. 9, a second pad-side fastening structure 81 is disposed at a position closer to the inner side in the longitudinal direction X than the pad-side fastening structure 8 and at a distance from the pad-side fastening structure 8. The second pad-side fastening structure 81 extends along the lateral direction Y. The second pad-side fastening structure 81 is arranged on the skin-facing surface side of the absorbent pad 1, similarly to the pad-side fastening structure 8. By adopting the second pad-side fastening structure 81 in addition to the pad-side fastening structure 8, the load on the pad-side fastening structure 8 can be reduced. Further, when the holder 11 is deformed, the absorbent pad 1 deforms starting from between the adjacent pad-side fastening structure 8 and the second pad-side fastening structure 81, and the absorbent pad 1 becomes more likely to follow the holder 11. Thereby, the inconvenience that the absorbent pad 1 peels off from the holder 11 during wearing of the diaper 10 is effectively prevented.

[0049] The pad-side fastening structure 8 and the second pad-side fastening structure 81 are both rectangular in plan view, and their longitudinal directions substantially coincide with the lateral direction Y of the absorbent pad 1. The pad-side fastening structure 8 and the second pad-side fastening structure 81 have the same shape and dimensions in plan view. The pad-side fastening structure 8 and the second pad-side fastening structure 81 are arranged parallel to each other. In the lateral direction Y, the position of one end of the pad-side fastening structure 8 coincides with the position of one end of the second pad-side fastening structure 81. Also in the lateral direction Y, the position of the other end of the pad-side fastening structure 8 coincides with the position of the other end of the second pad-side fastening structure 81. Both ends in the lateral direction Y of each of the pad-side fastening structure 8 and the second pad-side fastening structure 81 do not reach each side edge of the absorbent pad 1 and terminate inward of the lateral direction Y from the side edge. Here, "in the lateral direction Y, the position of one end of the pad-side fastening structure 8 coincides with the position of one end of the second pad-side fastening structure 81" means that, as shown in FIG. 9, when the positions of both in the lateral direction Y completely coincide, and when the positions of both are preferably separated by 5 mm or less, more preferably 3 mm or less, and still more preferably 1 mm or less in the lateral direction Y. Also, "in the lateral direction Y, the position of the other end of the pad-side fastening structure 8 coincides with the position of the other end of the second pad-side fastening structure 81" means that, as shown in FIG. 9, when the positions of both in the lateral direction Y completely coincide, and when the positions of both are preferably separated by 5 mm or less, more preferably 3 mm or less, and still more preferably 1 mm or less in the lateral direction Y.

[0050] The pad-side fastening structure 8 and the second pad-side fastening structure 81 may have the same length along the longitudinal direction X or may be different. When they are different, either one may be longer. When the length H1 of the pad-side fastening structure 8 along the vertical direction X is longer than the length H2 of the second pad-side fastening structure 81 along the vertical direction X, the second pad-side fastening structure 81 has a stronger fastening force to the holder-side fastening structure 14 than the pad-side fastening structure 8. The second pad-side fastening structure 81, which is relatively located on the outer side in the vertical direction X, is usually the part where the wearer of the diaper 10 first picks it with a finger and peels it off from the holder 11 when removing the diaper 10 by himself / herself. By strengthening the fastening force of this part to the holder 11 compared to that of the pad-side fastening structure 8, which is relatively located on the inner side in the vertical direction X, it is possible to prevent the wearer from removing the absorbent pad 1 from the holder 11. On the other hand, since the pad-side fastening structure 8, which is relatively located on the inner side in the vertical direction X, has a relatively weak fastening force to the holder 11, when a third party other than the wearer removes the diaper 10, the absorbent pad 1 can be peeled off from the pad-side fastening structure 8 side, and the operation of removing the diaper 10 can be smoothly performed. From the viewpoint of making these effects more prominent, the ratio H1 / H2 of the length H1 to the length H2 is preferably 1.05 or more, more preferably 1.1 or more, and still more preferably 1.2 or more. The upper limit of the ratio H1 / H2 can be, for example, 2.5.

[0051] When the length H1 of the pad-side fastening structure 8 along the vertical direction X is shorter than the length H2 of the second pad-side fastening structure 81 along the vertical direction X, the second pad-side fastening structure 81 has a weaker fastening force to the holder-side fastening structure 14 than the pad-side fastening structure 8. Since the fastening force of the second pad-side fastening structure 81 located relatively on the outer side in the vertical direction X to the holder 11 is weaker than that of the pad-side fastening structure 8 located relatively on the inner side in the vertical direction X, even when the force to peel the absorbent pad 1 from the holder 11 is relatively weak, the operation of peeling the absorbent pad 1 from the holder 11 can be performed smoothly. On the other hand, since the pad-side fastening structure 8 located relatively on the inner side in the vertical direction X has a relatively strong fastening force to the holder 11, it is unlikely that the absorbent pad 1 will be unintentionally peeled from the holder 11 during wearing of the diaper 10. From the viewpoint of making these effects more prominent, the ratio H2 / H1 of the length H2 to the length H1 is preferably 1.05 or more, more preferably 1.1 or more, and still more preferably 1.2 or more. The upper limit of the ratio H2 / H1 can be, for example, 2.5.

[0052] Also, the pad-side fastening structure 8 and the second pad-side fastening structure 81 may have the same length along the lateral direction Y, or may be different. When they are different, either one may be longer. When the length D1 of the pad-side fastening structure 8 along the lateral direction Y is longer than the length D2 of the second pad-side fastening structure 81 along the lateral direction Y, the second pad-side fastening structure 81 has a stronger fastening force to the holder-side fastening structure 14 than the pad-side fastening structure 8. Therefore, it is possible to prevent the wearer from removing the absorbent pad 1 from the holder 11, and it becomes possible to smoothly perform the operation of removing the diaper 10 by a third party other than the wearer. From the viewpoint of making these effects more prominent, the ratio D1 / D2 of the length D1 to the length D2 is preferably 1.05 or more, more preferably 1.1 or more, and still more preferably 1.2 or more. The upper limit of the ratio D1 / D2 can be, for example, 1.8.

[0053] When the length D1 of the pad-side fastening structure 8 along the horizontal direction Y is shorter than the length D2 of the second pad-side fastening structure 81 along the horizontal direction Y, since the second pad-side fastening structure 81 has a weaker fastening force with respect to the holder-side fastening structure 14 than the pad-side fastening structure 8, even when the force to peel the absorbent pad 1 from the holder 11 is relatively weak, the operation of peeling the absorbent pad 1 from the holder 11 can be performed smoothly, and the inconvenience of the absorbent pad 1 being unintentionally peeled from the holder 11 during the wearing of the diaper 10 can be prevented. From the viewpoint of making these effects more prominent, the ratio D2 / D1 of the length D2 to the length D1 is preferably 1.05 or more, more preferably 1.1 or more, and still more preferably 1.2 or more. The upper limit of the ratio D2 / D1 can be, for example, 1.8.

[0054] The present invention is not limited to the above-described embodiment and can be appropriately changed without departing from the gist of the present invention. For example, the absorbent pad of the present invention may 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 rolled-up used absorbent pad when the used absorbent pad is rolled up and discarded. The disposal tape is typically provided on the non-skin-facing surface (outer surface) of the absorbent pad, and during use, one longitudinal end exposed on the outer surface of the absorbent pad that is rolled up longitudinally with the skin-facing surface (inner surface) facing inward is arranged to straddle in the same direction, thereby maintaining the rolled-up state of the absorbent pad. Further, the indicator is used for the purpose of notifying the replacement timing of the absorbent pad, and typically, it is made to change visually, such as by changing color upon contact with urine, and the color change of the indicator can be visually recognized from the outside of the absorbent pad. As the above-described disposal tape and indicator, those conventionally used in this type of absorbent article can be used without particular limitation.

[0055] In the present invention, the pad-side fastening structure 8 and the second pad-side fastening structure 81 may extend continuously in the lateral direction Y as in the above-described embodiment, or may extend discontinuously in the lateral direction Y. In addition to the pad-side fastening structure 8 and the second pad-side fastening structure 81, a third pad-side fastening structure may be provided at a position closer to the outside in the longitudinal direction X than the second pad-side fastening structure 81 and at a distance from the second pad-side fastening structure 81. The third pad-side fastening structure may have the same configuration as the pad-side fastening structure 8 or the second pad-side fastening structure 81. The second pad-side fastening structure 81 and the third pad-side fastening structure may or may not be located at the same position in the longitudinal direction X as the non-fixed region 69 of the first leak-proof cuff 6. From the viewpoint of sufficiently raising the first leak-proof cuff 6 and further improving the leak-proof property also in the vicinity of the second pad-side fastening structure 81 and the third pad-side fastening structure, it is preferable that the second pad-side fastening structure 81 and the third pad-side fastening structure are located at the same position in the longitudinal direction X as the non-fixed region 69 of the first leak-proof cuff 6.

[0056] In the above-described embodiment, the expansion / contraction start position 6A of the first leak-proof cuff 6 and the expansion / contraction start position 6B of the leg cuff 65 were in the same position in the longitudinal direction X. Instead of this, the expansion / contraction start position 6A of the first leak-proof cuff 6 and the expansion / contraction start position 6B of the leg cuff 65 may be different in the longitudinal direction X. When they are different, the expansion / contraction start position 6A of the first leak-proof cuff 6 may be located outside in the longitudinal direction X than the expansion / contraction start position 6B of the leg cuff 65, or vice versa.

[0057] In the above-described embodiment, the lateral ends in the lateral direction Y of the pad-side fastening structure 8 were located between the both side edges in the lateral direction Y of the non-fixed region 69. Instead of this, the lateral ends in the lateral direction Y of the pad-side fastening structure 8 may reach the outer side edge in the lateral direction Y of the non-fixed region 69. Among the both lateral ends in the lateral direction Y of the pad-side fastening structure 8, only one of them may reach the outer side edge in the lateral direction Y of the non-fixed region 69, or both of them may reach the outer side edge in the lateral direction Y of the non-fixed region 69.

[0058] In the above embodiment, the expansion / contraction start position 6A of the first leak-proof cuff 6 and the expansion / contraction start position 6B of the leg cuff 65 were the same in the vertical direction X. However, alternatively, the expansion / contraction start position 6A of the first leak-proof cuff 6 and the expansion / contraction start position 6B of the leg cuff 65 may be different in the vertical direction X. When they are different, the expansion / contraction start position 6A of the first leak-proof cuff 6 may be located outward in the vertical direction X from the expansion / contraction start position 6B of the leg cuff 65, or vice versa.

[0059] In the above embodiment, the pad-side fastening structure 8 was provided on the skin-facing surface (inner surface) of the absorbent pad 1. However, in the present invention, the pad-side fastening structure 8 may be provided on the non-skin-facing surface (outer surface) of the absorbent pad 1. In that case, for example, the pad-side fastening structure 8 can be fixed to the non-skin-facing surface of the back sheet 4. In this case, in the holder 11 that constitutes the diaper 10 in combination with the absorbent pad 1, the holder-side fastening structure 14 to which the pad-side fastening structure 8 is fastened is arranged on the skin-facing surface (inner surface) of the holder main body portion 12.

[0060] In the above embodiment, the pad-side fastening structure 8 was the male member of the mechanical surface fastener and the holder-side fastening structure 14 was the female member of the mechanical surface fastener. However, conversely in the present invention, the pad-side fastening structure 8 may be the female member of the mechanical surface fastener and the holder-side fastening structure 14 may be the male member of the mechanical surface fastener.

Explanation of Reference Numerals

[0061] 1 Absorbent pad F Ventral part M Lower crotch R Dorsal part 2 Absorbent main body 3 Surface sheet 4 Back sheet 5 Absorbent body 6 First leak-proof cuff (side cuff) 60 First leak-proof sheet 61 First elastic member 68 Fixed region 69 Non-fixed region 7 Second leak-proof cuff 70 Second leak-proof sheet 71 Second elastic member 72 Fixed part 73 Non-fixed part 74 Base end part 75 Free end part 76 Internal space 77 Opening 78 Pocket part 79 Fixing means 8 Pad-side fastening structure 10 Disposable diaper (absorbent article of separate type) 11 Holder 14 Holder-side fastening structure X Longitudinal direction Y Transverse direction

Claims

1. An absorbent pad comprising a front surface sheet positioned closer to the wearer's skin in the worn state, a back surface sheet positioned farther from the wearer's skin, and an absorber positioned between the two sheets, having a longitudinal direction and a transverse direction orthogonal thereto, which is removably fixed to a holder that is annularly worn around the wearer's waist and used, wherein an end region in the longitudinal direction has a pad-side fastening structure that can be attached to and detached from the holder, wherein a side region in the transverse direction has a side cuff extending along the longitudinal direction, wherein the side cuff has a fixed region in the end region where the side cuff is fixed in a state of falling outward in the transverse direction, an absorbent pad, wherein a non-fixed region other than the fixed region in the side cuff and the pad-side fastening structure are located at the same position in the longitudinal direction.

2. The pad-side fastening structure extends in the transverse direction, The absorbent pad according to claim 1, having a region in which the non-fixed region of the side cuff and the side region in the transverse direction of the pad-side fastening structure do not overlap in a plan view of the absorbent pad.

3. The side cuff has elasticity along the longitudinal direction, The absorbent pad according to claim 2, wherein a start position of the expansion and contraction of the side cuff coincides with an inner edge in the longitudinal direction of the pad-side fastening structure or is located outward in the longitudinal direction beyond the inner edge.

4. having a leg cuff extending along the longitudinal direction at a position outward of the side cuff in the transverse direction, the leg cuff having elasticity along the longitudinal direction, The absorbent pad according to claim 2 or 3, wherein a start position of the expansion and contraction of the leg cuff coincides with an inner edge in the longitudinal direction of the pad-side fastening structure or is located outward in the longitudinal direction beyond the inner edge.

5. having a leg cuff extending along the longitudinal direction at a position outward of the side cuff in the transverse direction, The absorbent pad according to any one of claims 1 to 4, wherein the leg cuff and the pad-side fastening structure do not overlap when viewed along the longitudinal direction.

6. A second pad-side fastening structure, which is arranged at a position closer to the outer side in the longitudinal direction than the pad-side fastening structure and at a distance from the pad-side fastening structure, extends in the transverse direction. The absorbent pad according to any one of claims 1 to 5.

7. The absorbent pad according to claim 6, wherein the length of the pad-side fastening structure along the longitudinal direction is different from the length of the second pad-side fastening structure.

8. The absorbent pad according to claim 6 or 7, wherein the length of the pad-side fastening structure along the transverse direction is different from the length of the second pad-side fastening structure.

9. The side cuff has an elastic member arranged in an extended state along the longitudinal direction, The absorbent pad according to any one of claims 1 to 8, wherein in a plan view of the absorbent pad, the elastic member and the pad-side fastening structure overlap each other.

10. An absorbent pad according to any one of claims 1 to 9, A holder worn around the waist of a wearer, An absorbent article comprising the same.

Images