Absorbent article

Abstract

To provide an absorbent article capable of preventing displacement of an absorbent pad used therewith.SOLUTION: An absorbent article comprises: a skin surface part with water permeability disposed on a skin surface side of a wearer; and a first pad fixing part composed of a sheet that extends in a longitudinal direction, having a first joint part that is joined to the skin surface part outside in a width direction or the longitudinal direction on the skin surface side of the skin surface part, and a first non-joint part where an inner side from the first joint part is not joined to the skin surface part, for fixing an absorbent pad by having a portion of the absorbent pad used with the absorbent article inserted between itself and the skin surface part. The first pad fixing part has a first pleat row that is disposed on the first non-joint part, and in which a plurality of first pleats is aligned in the longitudinal direction at a first interval, and a second pleat row that is disposed on the first non-joint part, and in which a plurality of second pleats is aligned in the longitudinal direction at a second interval which is different from the first interval.SELECTED DRAWING: Figure 5

Description

[Technical field]

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

[0002] 2. Description of the Related Art Absorbent articles such as disposable diapers are known in the art (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-068464 A Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, disposable diapers are used in combination with an absorbent pad placed inside the diaper. Liquids discharged by the wearer of the diaper are absorbed and retained in the absorbent pad. If the wearer is a care recipient who wears diapers on a daily basis, the caregiver's burden of changing diapers can be reduced by frequently changing the absorbent pad and changing the disposable diaper every few days (e.g., every three days).

[0005] Disposable diapers are thus used in conjunction with absorbent pads, but if the absorbent pad becomes misaligned within the diaper, the absorbent pad will not be able to properly absorb discharged liquids such as urine, which may leak to the outside.

[0006] An object of the present invention is to provide an absorbent article capable of preventing displacement of an absorbent pad used in combination therewith. [Means for solving the problem]

[0007] An absorbent article according to one aspect of the present invention comprises: A length along a longitudinal direction corresponding to the front-to-back direction of the wearer; A length along a width direction perpendicular to the longitudinal direction; A water-permeable skin-facing portion disposed on the skin-facing side of the wearer; a first pad fixing portion which is made of a sheet extending in the longitudinal direction and has a first bonding portion which is bonded to the skin-facing portion on the skin-facing side of the skin-facing portion on the outer side in the width direction or the longitudinal direction, and a first non-bonding portion which is not bonded to the skin-facing portion on the inner side of the first bonding portion, and which fixes the absorbent pad by inserting a part of an absorbent pad used in combination with the absorbent article between the skin-facing portion and the first pad fixing portion, the first pad fixing portion having a first pleat row which is provided in the first non-bonding portion and has a plurality of first pleats lined up in the longitudinal direction at a first interval, and a second pleat row which is provided in the first non-bonding portion and has a plurality of second pleats lined up in the longitudinal direction at a second interval different from the first interval; Equipped with. Effect of the Invention

[0008] According to the present invention, it is possible to prevent the absorbent pad used in combination from shifting out of position. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a diaper according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the diaper according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of the diaper according to the embodiment when not being worn, taken along the width direction at the center in the longitudinal direction. [Figure 4] FIG. 4 is a plan view of the diaper according to the embodiment in a stretched state, as viewed from the skin-facing side. [Diagram 5] FIG. 5 is a plan view of the diaper according to the embodiment in a stretched state, as viewed from the skin-facing side. [Figure 6] FIG. 6 is an enlarged view showing a part of the pad fixing portion of the diaper according to the embodiment. [Figure 7] FIG. 7 is a plan view of the diaper according to the embodiment in a stretched state, as viewed from the skin-facing side. [Figure 8]FIG. 8 is an enlarged view showing a part of the pad fixing portion of the diaper according to the embodiment. [Figure 9] FIG. 9 is a plan view of the diaper according to the embodiment in a stretched state, as viewed from the skin-facing side. [Figure 10] FIG. 10 is a plan view of the diaper according to the first modification of the embodiment in a stretched state, as viewed from the skin-facing side. [Figure 11] FIG. 11 is a plan view of a diaper according to the second modification of the embodiment in a stretched state, as viewed from the skin-facing side. [Figure 12] FIG. 12 is a plan view of a diaper according to the third modification of the embodiment in a stretched state, as viewed from the skin-facing side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, absorbent articles according to embodiments of the present invention will be described with reference to the drawings. Note that the configurations of the following embodiments are merely examples, and the present invention is not limited to the configurations of these embodiments.

[0011] <Embodiment> In this embodiment, the longitudinal direction of a tape-type disposable diaper (an example of an "absorbent article" in the present application, hereinafter simply referred to as a "diaper") is the direction connecting the front body arranged opposite the wearer's abdomen and the rear body arranged opposite the wearer's back. Between the front body (one side in the longitudinal direction) and the rear body (the other side in the longitudinal direction) (the center in the longitudinal direction), a crotch portion arranged under the wearer's crotch (opposed to the crotch). In addition, when the diaper is worn by a wearer (hereinafter abbreviated as "worn state"), the side facing the wearer's skin (the inner side when worn) is the skin-facing side, and the opposite side to the skin-facing side (the outer side when worn) is the non-skin-facing side. Furthermore, the direction connecting the skin-facing side and the non-skin-facing side is the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is the width direction. In addition, the view from the thickness direction is the planar view. A diaper has a length along a longitudinal direction corresponding to the front-to-back direction of a wearer and a length along a width direction perpendicular to the longitudinal direction, and is worn under the crotch of a wearer. In addition, terms related to directions used in this application mean directions corresponding to the front-to-back, left-to-right and right-to-left directions of a wearer when the diaper is worn. For example, the left-to-right direction in this application means a direction corresponding to the left-to-right directions of a wearer when the diaper is worn.

[0012] FIG. 1 is a perspective view of a diaper according to this embodiment. The diaper 1 according to this embodiment is for adults (for nursing care). The diaper 1 has a crotch region 1B, which is a region corresponding to the crotch covering the pubic area of ​​the wearer when worn, a front body region 1F, which is located in front of the crotch region 1B and corresponds to the waist of the wearer's abdomen, and a back body region 1R, which is located behind the crotch region 1B and corresponds to the waist of the wearer's back. On both left and right edges of the back body region 1R, there are provided front patches 2F, which have hooks on the wearer's skin side and are provided on the front body region 1F and have loop processing on the non-skin side, and tapes 2L1, 2L2, 2R1, and 2R2 that can be attached by mechanical fasteners. When the tapes 2L1, 2L2, 2R1, and 2R2 are attached to the front patch 2F with the front body region 1F positioned on the wearer's abdomen and the rear body region 1R positioned on the wearer's back, the diaper 1 is worn in a state where it surrounds the wearer's waist circumference and thighs. The diaper 1 is fixed to the wearer's body in this manner. Since the diaper 1 is fixed to the wearer's body in this manner, the wearer can freely change his or her body position while wearing the diaper 1. The non-skin facing sides of the tapes 2L1, 2L2 and the tapes 2R1, 2R2 are looped in the same manner as the non-skin facing side of the front patch 2F. Therefore, the tapes 2L1, 2L2, 2R1, 2R2 can be overlapped on the front patch 2F.

[0013] In the diaper 1, an absorbent 6 capable of absorbing and retaining liquid is disposed mainly around the crotch region 1B. In addition, in order to prevent the formation of gaps between the diaper 1 and the wearer's skin that could serve as a liquid outflow path, the diaper 1 is provided with leg gathers 3AL, 3AR in areas along the wearer's leg circumference (thighs) and with a waist gather 3R in areas along the wearer's abdominal circumference. The leg gathers 3AL, 3AR and the waist gather 3R are brought into close contact with the wearer's skin by the elastic force of the elastic member. The elastic member may be, for example, a thread-like or strip-like rubber.

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

[0015] The diaper 1 has a back sheet 5 (non-skin-facing sheet), an absorbent 6, and a top sheet 7 (an example of the "skin-facing portion" in this application) laminated in this order on the skin-facing side of the cover sheet 4. The back sheet 5 has the same planar shape as the cover sheet 4. The back sheet 5 is a sheet-like member having a substantially rectangular appearance with constrictions 5KL, 5KR at the portions corresponding to the long sides, and is disposed on the skin-facing side of the cover sheet 4. The constrictions 5KL, 5KR are provided at the portions where the wearer's thighs are located (leg surrounding portions 10L, 10R shown in FIG. 4). The top sheet 7 is a sheet-like member having a substantially rectangular appearance. The top sheet 7 is made of a water-permeable sheet. The absorbent core of the absorbent 6 is a mat-like member having a substantially hourglass-shaped appearance. The top sheet 7 may have constrictions at the portions corresponding to the long sides, similar to the back sheet 5.

[0016] The back sheet 5, absorbent 6, and top sheet 7 are laminated in order on the cover sheet 4 with their longitudinal direction coinciding with the longitudinal direction of the cover sheet 4. The back sheet 5, like the cover sheet 4, is a film formed of a liquid-impermeable thermoplastic resin material to suppress leakage of discharged liquid. The back sheet 5 is preferably made of a material that also has moisture permeability to suppress stuffiness when worn. The top sheet 7 is a sheet-like member that is placed on the wearer's skin side so as to cover the water-absorbing surface of the absorbent 6. This top sheet 7 has water permeability in part or all of it. Therefore, when the diaper 1 is worn, the discharged liquid discharged by the wearer passes through the top sheet 7 that may come into contact with the wearer's skin and enters the absorbent 6, where it is absorbed. For example, a woven fabric, a nonwoven fabric, or a porous film is used as the material for the top sheet 7. The top sheet 7 may be hydrophilic. The joining of the sheets and the like includes adhesion with a hot melt adhesive, ultrasonic fusion, and the like.

[0017] The back sheet 5, absorbent body 6, and top sheet 7 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's private parts are covered with the cover sheet 4 in which the back sheet 5, absorbent body 6, and top sheet 7 are laminated, both ends in the longitudinal direction of the back sheet 5, absorbent body 6, and top sheet 7 are located on the wearer's ventral side and back side. In other words, the wearer's private parts are covered by the absorbent body 6 from the wearer's ventral side to the back side. Therefore, whether the wearer is lying in a supine position or a prone position, the discharged liquid comes into contact with the absorbent body 6 via the top sheet 7.

[0018] The diaper 1 is provided with elastic members 4SL, 4SR for forming the leg gathers 3AL, 3AR between the cover sheet 4 and the back sheet 5 so as to stretch in the longitudinal direction of the diaper 1. The elastic members 4SL, 4SR are provided in an appropriate number (three in this embodiment) determined according to the elastic force (contractile force) required in the design of the diaper 1. As shown in FIG. 4, the leg gathers 3AL, 3AR are arranged at both ends in the width direction of the crotch region 1B, including the leg surrounding portions 10L, 10R that are portions that follow the circumference of the legs of the wearer. The leg surrounding portions 10L, 10R are arranged at both ends in the width direction of the crotch region 1B, and the elastic members 4SL, 4SR are bonded to the leg surrounding portions 10L, 10R in a stretched state so as to extend in the longitudinal direction, thereby stretching the leg surrounding portions 10L, 10R in the longitudinal direction. The stretchable regions of the elastic members 4SL, 4SR become the leg gathers 3AL, 3AR.

[0019] The diaper 1 also has elongated, strip-shaped pad position fixing sheets 8L, 8R. The absorbent pad is fixed by inserting both widthwise sides of the absorbent pad used with the diaper 1 between the pad position fixing sheets 8L, 8R and the top sheet 7. An example of the absorbent pad used with the diaper 1 is the absorbent article disclosed in JP 2016-140559 A. The pad position fixing sheets 8L, 8R are liquid-impermeable sheets provided on the long sides of the top sheet 7. The pad position fixing sheets 8L, 8R are disposed outside the center of the diaper 1 in the width direction. The pad position fixing sheets 8L, 8R are provided with constrictions 8KL, 8KR at the locations where the wearer's thighs are located (leg surrounding portions 10L, 10R shown in FIG. 4), similar to the cover sheet 4. Elastic members 8EL, 8ER (an example of the "first elastic member" in this application) are arranged in a stretched state along the longitudinal direction of the pad position fixing sheets 8L, 8R. The pad position fixing sheets 8L, 8R are pulled in the longitudinal direction by the contractile force of the elastic members 8EL, 8ER and rise from the top sheet 7 to the skin-facing side. This makes it easier to insert an absorbent pad into the non-skin-facing side of the pad position fixing sheets 8L, 8R. One or more elastic members 8EL, 8ER (three in this embodiment) are provided depending on the required elastic force.

[0020] The diaper 1 also has a pad position fixing sheet 8C disposed between the pad position fixing sheets 8L, 8R and the top sheet 7. The rear side of an absorbent pad used in combination with the diaper 1 is inserted between the pad position fixing sheet 8C and the top sheet 7 to fix the absorbent pad. The pad position fixing sheet 8C is a liquid-impermeable sheet provided on the rear body region 1R side of the top sheet 7. The pad position fixing sheet 8C is folded back at a fold line along the width direction of the diaper 1 to form a double layer (an example of a "two-layer structure" as referred to in this application), with a gap formed between the front side and the top sheet 7, and the rear side joined to the top sheet 7. An elastic member 8EC (an example of a "second elastic member" as referred to in this application) is disposed between the double pad position fixing sheets 8C in a stretched state along the width direction. Rubber thread is used for the elastic member 8EC. The front side of the pad position fixing sheet 8C is pulled in the width direction by the contraction force of the elastic member 8EC and rises from the top sheet 7 to the skin side. This makes it easier to insert the absorbent pad onto the non-skin facing side of the pad position fixing sheet 8C.

[0021] The cover sheet 4 includes an elastic member 4C (an example of the "third elastic member" in the present application) that prevents the gap between the diaper 1 and the wearer's crotch from widening. The elastic member 4C is bent inwardly in the longitudinal center of the diaper 1. The elastic members 4C are arranged in a curved shape extending outward in the width direction at both longitudinal end sides. An appropriate number of elastic members 4C (three in this embodiment) is provided depending on the elastic force (contractile force) required for the design of the diaper 1.

[0022] The elastic member 9ER for forming the waist gather 3R is provided between the double pad position fixing sheets 8C at a position further back than the end of the absorbent body 6. The elastic member 9ER is provided with its longitudinal direction, which is the stretch direction, oriented in the left-right direction of the diaper 1. When the tapes 2L1, 2L2, 2R1, 2R2 provided on both the left and right sides of the elastic member 9ER are attached to the front patch 2F on the abdominal side of the wearer, the elastic member 9ER exerts a contractile force to bring the diaper 1 into close contact with the wearer and prevent the formation of a gap between the diaper 1 and the abdominal circumference of the wearer. The elastic member 9ER may be provided between the top sheet 7 and the back sheet 5.

[0023] The absorbent body 6 has an absorbent core 6C and a core wrap sheet 6W that wraps the absorbent core 6C. In this embodiment, the absorbent core 6C is formed by laminating a plurality of absorbent mats. In this embodiment, the absorbent core 6C has an upper absorbent mat 6A arranged on the skin side and a lower absorbent mat 6B arranged on the non-skin side. The upper absorbent mat 6A is an absorbent mat that is located on the skin side of the wearer when worn, and is hourglass-shaped with a constriction in the crotch region 1B when viewed from above. In contrast, the lower absorbent mat 6B is an absorbent mat that is located on the non-skin side of the wearer when worn, and is rectangular when viewed from above. The lower absorbent mat 6B is centered on the center part of the absorbent body 6 in the width direction, and its total width is equal to or less than the constriction part of the upper absorbent mat 6A. That is, the lower absorbent mat 6B is laminated with the upper absorbent mat 6A so that it is entirely hidden by the upper absorbent mat 6A when viewed from the skin side.

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

[0025] The absorbent core 6C has a structure in which granular absorbent resin such as SAP (Super Absorbent Polymer), a hydrophilic polymer with a cross-linked structure capable of absorbing and retaining water, is held in the gaps between short fibers (absorbent materials) of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or between short fibers of synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been hydrophilized. Therefore, in the absorbent core 6C, the volumetric change of the absorbent resin before and after absorbing liquid basically occurs within the short fibers that hold the absorbent resin in the gaps. Therefore, when the absorbent core 6C is viewed as a whole, it can be said that the expansion rate of the thickness of the absorbent core 6C that absorbs liquid is not as large as the expansion rate of the absorbent resin itself.

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

[0027] The upper absorbent mat 6A is provided with a pair of slits 6H on the left and right. The slits 6H extend obliquely with respect to the longitudinal direction of the diaper 1 so that the front side faces outward in the width direction. The slits 6H penetrate the upper absorbent mat 6A in the thickness direction. The upper absorbent mat 6A is formed using a mold that does not allow absorbent materials such as short fibers to be laminated in the formation area of ​​the slits 6H, so that the slits 6H are also formed. In this embodiment, the slits 6H are of the through type, but they may be of the non-through type. The lower absorbent mat 6B may also be provided with a through type slit, and in this case, the slits provided in the upper absorbent mat 6A and the lower absorbent mat 6B may overlap each other in the thickness direction. Instead of the slits 6H, grooves may be provided by compressing the skin-facing side of the upper absorbent mat 6A. When the diaper 1 according to this embodiment is not used in combination with an absorbent pad, the absorbent body 6 absorbs and retains urine discharged by the wearer. In the diaper 1, urine can be dispersed along the slits 6H, and therefore the urine can be absorbed and retained by the entire upper absorbent mat 6A and the lower absorbent mat 6B.

[0028] The core wrap sheet 6W is a thin liquid-permeable sheet, and wrapping the absorbent core 6C with the core wrap sheet 6W makes it difficult for the SAP of the absorbent core 6C to be mixed with other structures. In addition, the absorbent core 6C is prevented from losing its shape. The core wrap sheet 6W can be made of pulp fiber, and tissue paper can be used as an example. The absorbent body 6 is wrapped in the back sheet 5 and the top sheet 7, and these sheets can also prevent the absorbent body 6 from losing its shape, so the core wrap sheet 6W may not be provided.

[0029] As described above, the diaper 1 according to this embodiment is intended to be used in combination with an absorbent pad disposed on the wearer side. For this reason, the diaper 1 includes a pad fixing portion for fixing the absorbent pad. This pad fixing portion will be described with reference to Fig. 5. Fig. 5 is a plan view of the diaper 1 similar to Fig. 4. For the sake of explanation, the elastic members 4C, 4SL, 4SR and the slit 6H are omitted from Fig. 5 and subsequent figures.

[0030] An absorbent pad (not shown) is placed on the skin-facing portion formed of a water-permeable top sheet 7. The diaper 1 includes pad fixing portions 80L, 80R, 80C for fixing the absorbent pad placed on the skin-facing portion. The pad fixing portions 80L, 80R (an example of the "first pad fixing portion" in the present application) are formed by pad position fixing sheets 8L, 8R, and the absorbent pad is fixed by inserting both widthwise sides of the absorbent pad between the top sheet 7 and the pad position fixing sheets 8L, 8R. The pad fixing portions 80L, 80R have, on the skin-facing side of the top sheet 7, joining portions 81L, 81R (an example of the "first joining portion" in the present application) that join to the top sheet 7 on the outer side in the width direction of the diaper 1, and non-joining portions 82L, 82R (an example of the "first non-joining portion" in the present application) that are not joined to the top sheet 7 on the inner side in the width direction of the joining portions 81L, 81R. The pad position fixing sheets 8L, 8R are joined to the top sheet 7 at joints 81L, 81R, and on the outside of the top sheet 7, the pad position fixing sheets 8L, 8R are joined to the back sheet 5 arranged on the non-skin facing side. Hot melt adhesive is applied to the top sheet 7 and back sheet 5 arranged on the non-skin facing side of the pad position fixing sheets 8L, 8R, and the pad position fixing sheets 8L, 8R are laminated on top of that to form the joints 81L, 81R.

[0031] In the non-joined portions 82L, 82R that are located on the inside in the width direction of the joined portions 81L, 81R, the pad position fixing sheets 8L, 8R are not joined to the top sheet 7. In addition, the pad fixing portions 80L, 80R have temporary adhesion portions 83L, 83R (an example of a "first temporary adhesion portion" in this application) that are temporarily adhered to the top sheet 7 in at least a part of the non-joined portions 82L, 82R. In FIG. 5, the areas of the non-joined portions 82L, 82R are shown shaded, and the temporary adhesion portions The 83L and 83R are provided in at least a part of the filled area. Here, the term "temporarily bonded" refers to a state in which the two temporarily bonded materials are bonded with an adhesive strength sufficient to allow the two materials to be peeled off without breaking, such as tearing, the materials of the diaper 1. The term "bonded" refers to a state in which the two bonded materials cannot be peeled off without breaking, such as tearing, the materials of the diaper 1. In this embodiment, the pad position fixing sheets 8L and 8R and the top sheet 7 can be peeled off at the temporary bonded portions 83L and 83R without breaking the pad position fixing sheets 8L and 8R and the top sheet 7. Such temporary bonded portions 83L and 83R are formed by applying a small amount of hot melt adhesive between the pad position fixing sheets 8L and 8R and the top sheet 7. Also, for example, the top sheet 7 may be bonded to a material arranged on the non-skin side (e.g., core wrap sheet 6W, see FIG. 3) with a hot melt adhesive, and a small amount of this hot melt adhesive may permeate the skin side of the top sheet 7, and the top sheet 7 and the pad position fixing sheets 8L, 8R may be bonded with a weak force to form temporary adhesive portions 83L, 83R. In this case, it is preferable that the top sheet 7 has a mesh size (basis weight) that allows the hot melt adhesive to seep out to the skin side. It is also preferable that the hot melt adhesive is applied to the non-skin side of the top sheet 7 to such an extent that a small amount of hot melt adhesive seeps out to the skin side of the top sheet 7 to achieve temporary adhesion.

[0032] At both longitudinal ends of the non-jointed portions 82L, 82R of the pad fixing portions 80L, 80R, fixing portions 90L, 90R, 91L, 91R are provided that fix the pad position fixing sheets 8L, 8R to the top sheet 7 with hot melt adhesive. The fixing portions 90L, 90R are provided in the rear body region 1R, and the fixing portions 91L, 91R are provided in the front body region 1F. The fixing portions 90L, 90R, 91L, 91R are formed by hot melt adhesive applied in stripes between the pad position fixing sheets 8L, 8R and the top sheet 7, and adhere and fix the pad position fixing sheets 8L, 8R to the top sheet 7.

[0033] In the pad fixing parts 80L, 80R, the non-jointed parts 82L, 82R between the front and rear fixing parts 90L, 90R, 91L, 91R rise from the top sheet 7 to the skin side. More specifically, the pad position fixing sheets 8L, 8R are the boundaries between the jointed parts 81L, 81R and the non-jointed parts 82L, 82R, and the inner non-jointed parts 82L, 82R rise to the skin side at the curved upright lines 84L, 84R. This forms a gap between the pad position fixing sheets 8L, 8R and the top sheet 7. The absorbent pad is inserted into this gap, and the non-jointed parts 82L, 82R of the pad fixing parts 80L, 80R press the absorbent pad against the top sheet side, preventing the absorbent pad from shifting from the diaper 1. The absorbent pads that can be used vary in size for each product. In the diaper 1 according to this embodiment, temporary adhesive portions 83L, 83R are provided at least in part of the non-jointed portions 82L, 82R, and the temporary adhesive is peeled off just enough to form a gap necessary for inserting an absorbent pad to be used with the diaper 1, so that the absorbent pad can be fixed in a gap of an area suitable for the size of the absorbent pad without inserting the absorbent pad all the way into the non-jointed portions 82L, 82R. Since the diaper 1 can fix the absorbent pad, the absorbent pad can be positioned in an appropriate position with respect to the urethral opening and anus, which are the excretion positions of the wearer.

[0034] In this embodiment, the pad fixing parts 80L, 80R are provided on both the left and right sides of the diaper 1. Here, the pad fixing parts 80L, 80R have free ends 82LA, 82RA arranged inside the non-joined parts 82L, 82R, and the above-mentioned elastic members 8EL, 8ER arranged on the free end side. If the free ends 82LA, 82RA of the non-joined parts 82L, 82R are easily peeled off from the top sheet 7, it becomes easier to insert an absorbent pad between the non-joined parts 82L, 82R and the top sheet 7. When an absorbent pad is inserted between the non-joined parts 82L, 82R and the top sheet 7, it is preferable to raise the free ends 82LA, 82RA from the top sheet 7 to the skin side by the contraction force of the elastic members 8EL, 8ER. In addition, the non-joined parts 82L, 82R are free ends of the parts where the temporary adhesion by the temporary adhesion parts 83L, 83R has been peeled off. The ends 82RA, 82RL come into contact with the wearer's skin. The pad position fixing sheets 8L, 8R are impermeable, so that the non-joined portions 82L, 82R rise up and come into contact with the wearer's skin, eliminating any gaps that may form between the diaper 1 and the skin, thereby preventing urine and other excrement from leaking to the outside. The non-joined portions 82L, 82R tend to rise up from the top sheet 7 in the area where the contraction force of the elastic members 8EL, 8ER is applied, and the raised portions function as a leakage barrier that prevents excreted liquid and excrement from leaking to the outside. The elastic members 8EL, 8ER exert their contraction force mainly in the crotch region 1B, so that the non-joined portions 82L, 82R can function as a leakage barrier in the crotch region 1B where the top sheet 7 and absorbent pad are furthest from the wearer's skin. For this reason, it is preferable that the temporary adhesive parts 83L, 83R are not provided near the longitudinal center of the crotch region 1B, and the non-adhesive parts 82L, 82R are raised toward the skin side to function as a leakage barrier.

[0035] In addition, the pad position fixing sheets 8L, 8R are doubled in the thickness direction by folding back a single sheet at the inner end (free end 82LA, 82RA side) in the width direction. The elastic members 8EL, 8ER are sandwiched between the double sheets. In addition, non-adhesive regions 85L, 85R, 86L, ​​86R in which the double sheets are not adhered to each other are provided on the end side of the longitudinal direction of the diaper 1 from the stretchable region where the elastic members 8EL, 8ER stretch. The non-adhesive regions 85L, 85R are provided in the rear body region 1R, and the non-adhesive regions 86L, ​​86R are provided in the front body region 1F. By providing the non-adhesive regions 85L, 85R, 86L, ​​86R on the extension line of the stretchable region of the elastic members 8EL, 8ER, the non-joined parts 82L, 82R in the stretchable region are easily raised to the skin surface side, and the free end 82LA, 82RA side is easily pinched with fingers. This allows the user to widen the gap between the non-jointed portions 82L, 82R and the top sheet 7, making it easier to insert the absorbent pad 1 between the non-jointed portions 82L, 82R and the top sheet 7. The pad position fixing sheets 8L, 8R may be doubled by laminating two separate sheets. By providing the temporary adhesive portions 83L, 83R, Therefore, it may be difficult for the non-bonded portions 82L, 82R to rise from the top sheet 7, but by providing the non-bonded regions 85L, 85R, 86L, ​​86R, the non-bonded portions 82L, 82R are more likely to rise due to the elasticity of the elastic members 8EL, 8ER. Furthermore, by rising, the non-bonded portions 82L, 82R can function better as leak-proof walls.

[0036] Next, the pleat rows provided in the non-joined portions 82L, 82R will be described. FIG. 6 is a schematic diagram of a part of the upright non-joined portion 82L as viewed from the inside in the width direction of the diaper 1. In FIG. 6, the pad fixing portion 80L on the left side is illustrated, but the pad fixing portion 80R on the right side has the same configuration as the pad fixing portion 80L. The pad fixing portions 80L, 80R have pleat rows 85 (an example of the "first pleat row" in this application) and pleat rows 86 (an example of the "second pleat row" in this application) provided in the non-joined portions 82L, 82R. The pleat rows 85, 86 are formed by contracting the non-joined portion 82L by the contraction force of the elastic member 8EL arranged in the non-joined portion 82L. In the pleat row 85, a plurality of pleats 85A are formed side by side in the longitudinal direction of the diaper 1. In the pleat row 86, a plurality of pleats 86A are formed side by side in the longitudinal direction of the diaper 1. The pleats 85A, 86A are different in size and the intervals between the pleats in the pleat rows 85, 86. The intervals between the pleats 85A are a first interval, and the intervals between the pleats 86A are a second interval.

[0037] As shown in FIG. 6, the elastic members 8EL are designated as elastic member 8EL1, elastic member 8EL2, and elastic member 8EL3 in this order from the free end 82LA side toward the rising line 84L. The elastic members 8EL1, 8EL2, and 8EL3 are arranged spaced apart from one another in the width direction of the diaper 1. The distance between the elastic members 8EL1 and 8EL2 arranged on the free end side is narrower than the distance between the elastic members 8EL2 and 8EL3. Therefore, the pleat row 85 formed between these elastic members due to the contraction of the elastic members 8EL1 and 8EL2 has a narrower distance between the pleats and a smaller size than the pleat row 86 formed between these elastic members due to the contraction of the elastic members 8EL2 and 8EL3. The surface of the absorbent pad used in combination also becomes uneven due to the contraction force of the elastic members, etc. The pleats of the pleat rows 85, 86 can be engaged with the unevenness of the absorbent pad to fix the absorbent pad to the diaper 1. If there is only one type of pleat row, it is assumed that the unevenness of the absorbent pad used in combination with the diaper 1 may not be engaged. On the other hand, in this embodiment, the pad fixing part 80L has two pleat rows 85, 86, large and small, in the non-joining part 82L. By having multiple types of pleat rows 85, 86, the pad fixing part 80L can increase the possibility of engaging with the unevenness of various absorbent pads that can be used in combination. As a result, the diaper 1 according to this embodiment can fix various absorbent pads that can be used in combination.

[0038] The contractile forces of the elastic members 8EL1 to 8EL3 may be made different in order to make the pleats in the pleat rows 85 and 86 different in size. For example, the contractile forces of the elastic members 8EL1 and 8EL2 forming the pleat row 85 with supposedly small pleats may be made relatively small, and the contractile force of the elastic member 8EL3 may be made relatively large. The contractile forces can be adjusted by the draft ratio and elastic modulus of the elastic members.

[0039] Next, the interval between the joining portions 81L, 81R of the pair of left and right pad fixing portions 80L, 80R will be described with reference to FIG. 7. FIG. 7 is a plan view showing the diaper 1 according to this embodiment, similar to FIG. 5. The interval between the joining portions 81L, 81R is synonymous with the interval between the rising lines 84L, 84R which are the boundaries between the joining portions 81L, 81R and the non-joining portions 82L, 82R. As shown in FIG. 7, the rising lines 84L, 84R are bent inward in the width direction at the longitudinal center of the diaper 1. If the interval between the rising lines 84L, 84R at the longitudinal center of the diaper 1 is L1, the interval between the rising lines 84L, 84R at the longitudinal front side of the diaper 1 is L2, and the interval between the rising lines 84L, 84R at the longitudinal rear side of the diaper 1 is L3, L2 and L3 are longer than L1.

[0040] Generally, an absorbent pad is relatively wide at the front and rear sides in the front-rear direction and relatively narrow at the center in the front-rear direction. In the diaper 1 according to the present embodiment, the distance between the left and right joint parts 81L, 81R is wide at the front and rear sides and narrow at the center, so that the shape of the innermost end of the non-joined parts 82L, 82R can be made to match the shape of the absorbent pad to be used in combination. In the diaper 1, the absorbent pad can be fixed by the pad fixing parts 80L, 80R by inserting the absorbent pad into the non-skin-facing side of the non-joined parts 82L, 82R whose innermost end matches the shape of the non-joined parts 82L, 82R. In the diaper 1, the position of the absorbent pad can be prevented from shifting relative to the diaper 1.

[0041] Next, the rear pad fixing part 80C (an example of the "second pad fixing part" in the present application) will be described with reference to Fig. 5. The pad fixing part 80C is formed of a pad position fixing sheet 8C, and the rear side of the absorbent pad is inserted between the top sheet 7 and the pad position fixing sheet 8C to fix the absorbent pad. The pad fixing part 80C has a bonding part 81C (an example of the "second bonding part" in the present application) that is bonded to the top sheet 7 on the skin-facing side of the top sheet 7 relatively outside when the diaper 1 is viewed in the longitudinal direction, and a non-bonding part 82C (an example of the "second non-bonding part" in the present application) that is not bonded to the top sheet 7 on the inside of the bonding part 81C in the longitudinal direction of the diaper. The pad position fixing sheet 8C is bonded to the top sheet 7 at the bonding part 81C. A hot melt adhesive is applied to the top sheet 7, which is placed on the non-skin facing side of the pad position fixing sheet 8C, and the pad position fixing sheet 8C is laminated thereon to form a joint 81C.

[0042] In a non-joined portion 82C that is disposed longitudinally inward of the joined portion 81C, the pad position fixing sheet 8C and the top sheet 7 are not joined. In addition, the pad fixing portion 80C has a temporary adhesion portion 83C (second temporary adhesion portion) that is temporarily adhered to the top sheet 7 in at least a part of the non-joined portion 82C. In FIG. 5, the area of ​​the non-joined portion 82C is shown shaded with diagonal lines, The temporary adhesive portion 83C is provided in at least a part of the filled region. In this embodiment, the pad position fixing sheet 8C and the top sheet 7 can be peeled off at the temporary adhesive portion 83C without tearing them. Such a temporary adhesive portion 83C is formed by applying a small amount of hot melt adhesive between the pad position fixing sheet 8C and the top sheet 7. Also, for example, the top sheet 7 may be bonded to a material arranged on the non-skin side (e.g., core wrap sheet 6W, see FIG. 3) with hot melt adhesive, and a small amount of this hot melt adhesive may permeate the skin side of the top sheet 7 to weakly bond the top sheet 7 and the pad position fixing sheet 8C to each other, thereby forming the temporary adhesive portion 83C.

[0043] In the pad fixing portion 80C, the non-jointed portion 82C rises from the top sheet 7 toward the skin side. More specifically, the pad position fixing sheet 8C has the inner non-jointed portion 82C rise toward the skin side at the rising line 84C, which is the boundary between the jointed portion 81C and the non-jointed portion 82C. This forms a gap between the pad position fixing sheet 8C and the top sheet 7. The absorbent pad is inserted into this gap, and the non-jointed portion 82C of the pad fixing portion 80C presses the absorbent pad toward the top sheet 7 side, thereby preventing the absorbent pad from shifting its position relative to the diaper 1. In addition, the absorbent pads that can be used vary in size for each product. In the diaper 1 according to this embodiment, a temporary adhesive portion 83C is provided in at least a part of the non-jointed portion 82C, and the temporary adhesive is peeled off to form a gap necessary for inserting the absorbent pad to be used with the diaper 1, so that the absorbent pad can be fixed in a gap of an area suitable for the size of the absorbent pad without inserting the absorbent pad deep into the non-jointed portion 82C. Since the diaper 1 can fix the absorbent pad, the absorbent pad can be positioned appropriately with respect to the wearer's excretion positions, that is, the urethral opening and anus.

[0044] In this embodiment, the pad fixing portion 80C is provided on the rear side of the diaper 1. Here, the pad fixing portion 80C has a free end 82CA arranged inside the non-joined portion 82C and the above-mentioned elastic member 8EC arranged on the free end side. If the free end 82CA of the non-joined portion 82C is easily peeled off from the top sheet 7, it is easy to insert an absorbent pad between the non-joined portion 82C and the top sheet 7, so it is preferable to raise the free end 82CA from the top sheet 7 to the skin side by the contractile force of the elastic member 8EC. In addition, the non-joined portion 82C forms a gap between the top sheet 7 and the portion where the temporary adhesion by the temporary adhesive portion 83C is peeled off. Since the pad position fixing sheet 8C has water impermeability, the non-joined portion 82C forms a gap between the top sheet 7 and the top sheet 7 to form a space between the top sheet 7, and the wearer's discharged liquid and discharged matter can be contained in the space. This makes it possible for the diaper 1 to prevent discharged liquid and discharged matter from leaking out from the rear end (back side) of the rear side.

[0045] As described above, the diaper 1 according to this embodiment includes pad fixing parts 80L, 80R, and 80C. The diaper 1 can fix the absorbent pad by these pad fixing parts. The diaper 1 may have at least one of the pad fixing parts 80L, 80R, and 80C. That is, the pad fixing part may be provided only on one of the left and right sides, only on the rear body region 1R, only on the front body region 1F, or both on the front body region 1F and the rear body region 1R. The pad fixing part 80C extending in the width direction may be provided not on the rear body region 1R but on the front body region 1F. In this case, the pad fixing part 80C functions as a leak-proof wall to prevent discharged liquid or discharged matter from leaking out from the front rear end (abdominal side). The diaper 1 can fix the absorbent pad by providing the pad fixing part at least on the left, right, front, and rear sides.

[0046] In addition, the pad fixing portion 80C has two elastic members 8EC that are stretched on the pad position fixing sheet 8C, thereby forming pleats. 1 is a schematic diagram of a joining portion 82C as viewed from the non-skin facing side. The pad fixing portion 80C has a pleat row 87 (third pleat row) provided in the non-joined portion 82C. The pleat row 87 is formed by contracting the non-joined portion 82C by the contractile force of an elastic member 8EC arranged in the non-joined portion 82C. In the pleat row 87, a plurality of pleats 87A are formed side by side in the width direction of the diaper 1. Each pleat in the pleat row 87 engages with an unevenness of the absorbent pad, thereby fixing the absorbent pad to the diaper 1. The diaper 1 according to this embodiment is able to suppress misalignment of the absorbent pad in the width direction by providing the pad fixing portion 80C with the pleat row 87 extending in the width direction.

[0047] Next, the relationship between the elastic member 4C and the non-joined portions 82L, 82R will be described with reference to FIG. 9. For the sake of explanation, the slit 6H is omitted in FIG. 9. The elastic member 4C arranged between the cover sheet 4 and the back sheet 5 is curved inward in the width direction at the center side in the longitudinal direction of the diaper 1, and a part of it extends in the area overlapping the non-joined portions 82L, 82R. The contraction force of the elastic member 4C is transmitted to the top sheet 7 via the back sheet 5 and the absorbent body 6. This contraction force forms wrinkles in the area overlapping the non-joined portions 82L, 82R in the top sheet 7. In this way, the elastic member 4C extends in the area overlapping the non-joined portions 82L, 82R, and forms wrinkles in the top sheet 7 in this area. The diaper 1 according to this embodiment forms wrinkles in the top sheet 7, so that the wrinkles can be engaged with the absorbent pad inserted on the non-skin-facing side of the non-joined portions 82L, 82R. This allows the diaper 1 to better fix the absorbent pad.

[0048] As shown in FIG. 9, the elastic member 4C extends in a curved shape that draws an arc in the area overlapping with the non-jointed portions 82L, 82R. The contractile force of the elastic member 4C forms wrinkles in the top sheet 7 that extend obliquely with respect to the longitudinal direction of the diaper. By forming oblique wrinkles in the top sheet 7, the diaper 1 can more firmly fix an absorbent pad that does not engage with the pleats of the pleat rows 85, 86 extending in the longitudinal direction of the diaper 1 or the pleats of the pleat row 87 extending in the width direction of the diaper 1, if the absorbent pad can be engaged with the oblique wrinkles of the top sheet 7. The diaper 1 can fix various absorbent pads. The diaper 1 can also more firmly fix an absorbent pad by engaging the absorbent pad with both the pleats of the pleat rows 85, 86 and the wrinkles formed in the top sheet 7. The diaper 1 can fix the absorbent pad from both the skin-facing side and the non-skin-facing side by engaging the skin-facing side of the absorbent pad with each pleat of the pleat rows 85, 86 and engaging the wrinkles formed in the top sheet 7 with the non-skin-facing side of the absorbent pad.

[0049] Moreover, the elastic members 4C do not extend inward in the width direction behind the longitudinal center of the diaper 1. The longitudinal center of the diaper 1 is a buttocks-corresponding region 88 corresponding to the buttocks of the wearer, and the elastic members 4C extend to avoid the buttocks-corresponding region 88. When wrinkles are formed in the top sheet 7 within the buttocks-corresponding region 88 of the diaper 1, the unevenness caused by the wrinkles comes into contact with the skin surface of the wearer, degrading the comfort of wearing the diaper 1. By extending the elastic members 4C to avoid the buttocks-corresponding region 88, the diaper 1 can prevent unnecessary wrinkles from being formed in the buttocks-corresponding region 88. This improves the comfort of wearing the diaper 1 and eliminates the need to smooth out wrinkles in the buttocks-corresponding region 88 when wearing the diaper 1. Furthermore, the diaper 1 prevents unwanted wrinkles from being formed in the buttocks-corresponding region 88, thereby preventing bedsores caused by wrinkles coming into contact with the skin surface.

[0050] <Variation 1> Next, a diaper 1 according to a first modified example of this embodiment will be described. Fig. 10 is a plan view showing the diaper according to the first modified example. For the sake of explanation, the slit 6H is omitted from Fig. 10. The elastic members 4SL, 4SR (an example of the "third elastic member" as referred to in this application) arranged between the cover sheet 4 and the back sheet 5 are curved inward in the width direction at the front side in the longitudinal direction of the diaper 1, and part of them extends in the area overlapping with the non-jointed portions 82L, 82R. The elastic members 4SL, 4SR The contractile force of the elastic member 4SL and the elastic member 4SR is transmitted to the top sheet 7 via the back sheet 5 and the absorbent body 6. This contractile force causes wrinkles to form in the areas of the top sheet 7 overlapping with the non-jointed portions 82L and 82R. In this manner, the elastic members 4SL and 4SR extend in the areas overlapping with the non-jointed portions 82L and 82R, forming wrinkles in the top sheet 7 in these areas. The elastic members 4SL and 4SR also extend in the areas overlapping with the non-jointed portions 82L and 82R, forming wrinkles in the top sheet 7 in these areas. In the diaper 1 according to this modification, the elastic members 4C and the elastic members 4SL and 4SR extend along different extension lines. In the diaper 1 according to this modification, wrinkles extending in various directions are formed in the top sheet 7 by the elastic members 4C and the elastic members 44SL and 4SR. In the diaper 1, by forming various wrinkles in the top sheet 7, even if the absorbent pad does not engage with each pleat of the pleat rows 85, 86 extending in the longitudinal direction of the diaper 1 or each pleat of the pleat row 87 extending in the width direction of the diaper 1, the absorbent pad can be more firmly fixed if it can be engaged with the diagonal wrinkles of the top sheet 7. Furthermore, in the diaper 1, by engaging the absorbent pad with both the pleats of the pleat rows 85, 86 and the wrinkles formed in the top sheet 7, the absorbent pad can be more firmly fixed.

[0051] <Variation 2> Next, a diaper 1 according to Modification 2 of this embodiment will be described. Fig. 11 is a plan view showing the diaper according to Modification 2. In Fig. 11, the areas where the temporary adhesive portions 83L, 83R are formed are indicated by hatching. As shown in Fig. 11, in this modification, the temporary adhesive portions 83L, 83R are provided in the front body region 1F and the back body region 1R, but not in the crotch region 1B.

[0052] In order to insert an absorbent pad between the non-jointed portions 82L, 82R and the top sheet 7, it is preferable to provide temporary adhesive portions 83L, 83R in parts of the non-jointed portions 82L, 82R. For example, by providing the temporary adhesive portions 83L, 83R on the front and rear sides as in this modified example, after the non-jointed portions 82L, 82R in the temporary adhesive portions 83L, 83R are peeled off from the top sheet 7, the four corners of the absorbent pad are positioned at the positions where the temporary adhesive portions 83L, 83R were, and therefore the four corners of the absorbent pad can be fixed by the adhesiveness remaining in the temporary adhesive portions 83L, 83R.

[0053] In addition, if the tape-type diaper 1 is divided into three regions, a front body region 1F, a crotch region 1B, and a back body region 1R, in the front body region 1F and the back body region 1R, the skin-facing sides of the non-joined portions 82L, 82R are pressed against the wearer's skin when worn, so the non-joined portions 82L, 82R do not rise up against the skin. On the other hand, in the crotch region 1B, the non-joined portions 82L, 82R are not pressed against the wearer's skin, but rise up against the skin, forming a leak-proof wall. For this reason, by not providing the temporary adhesive portions 83L, 83R in the crotch region 1B, the non-joined portions 82L, 82R in the crotch region 1B are easily raised up and a leak-proof wall is easily formed.

[0054] <Modification 3> Next, a diaper 1 according to Modification 3 of this embodiment will be described. Fig. 12 is a plan view of the diaper according to Modification 3. In Fig. 12, the areas where the temporary adhesion parts 83L, 83R are formed are indicated by hatching. As shown in Fig. 12, in this modification, the pad position fixing sheets 8L, 8R are not adhered to the top sheet 7 in the stretchable areas where the elastic members 8EL, 8ER stretch. This non-adhesion does not include temporary adhesion. In other words, the above-mentioned temporary adhesion parts 83L, 83R are not provided in the stretchable areas where the elastic members 8EL, 8ER stretch.

[0055] In the diaper 1 according to this modification, the free ends 82LA, 82RA of the pad fixing parts 80L, 80R are easily raised from the top sheet 7 by the force of contraction of the elastic members 8EL, 8ER. This makes it easier to insert the absorbent pad into the pad fixing parts 80L, 80R from the free ends 82LA, 82RA. By providing the temporary adhesive parts 83L, 83R in region 1F and the back body region 1R, the four corners of the absorbent pad are located at the positions of the temporary adhesive parts 83L, 83R after the non-jointed parts 82L, 82R in the temporary adhesive parts 83L, 83R are peeled off from the top sheet 7, so that the four corners of the absorbent pad can be fixed by the adhesiveness remaining in the temporary adhesive parts 83L, 83R. Furthermore, by not providing the temporary adhesive parts 83L, 83R in the stretchable region, the non-jointed parts 82L, 82R are easily raised by the contractile force of the elastic members 8EL, 8ER, and a leakproof wall is easily formed.

[0056] <Other embodiments> Although the present embodiment has been described above, the contents of the present invention are not limited to the above embodiment. In the above embodiment, a tape-type disposable diaper has been described as an example, but the present invention is not limited to this, and the present invention can also be applied to absorbent articles such as pants-type disposable diapers.

[0057] In the above embodiment, the top sheet 7 forming the skin-facing portion and the pad position fixing sheets 8L, 8R forming the pad fixing portions 80L, 80R are separate sheets, but this is not limited to the above. For example, the pad fixing portions 80L, 80R may be formed by the top sheet 7 by folding back the top sheet 7 at the end sides in the width direction. Similarly, the pad fixing portion 80C may be formed by the top sheet 7 by folding back the top sheet 7 at the end sides in the longitudinal direction.

[0058] The embodiments and modifications thereof disclosed above can be combined with each other. [Explanation of symbols]

[0059] 1. Diapers 1B...Inseam area 1F: Front body area 1R: Back body area 2F: Front patch 2L1, 2L2, 2R1, 2R2... Tape 3AL, 3AR Leg Gathers 3R: Waist gather 4. Cover sheet 4KL, 4KR... Constriction 4C, 4SL, 4SR, 8EL, 8ER, 9ER, 22, 24 Elastic member 5. Back sheet 6. Absorber 6C··Absorbent core 6A··Upper layer absorbent mat 6B··Lower layer absorbent mat 6W··Core wrap sheet 6H··Slit 7. Top sheet 8L, 8R, 8C ··Pad position fixed seat 81L, 81R, 81C...Joint part 82L, 82R, 82C...Non-joint part 83L, 83R, 83C Temporary adhesive part 84L, 84R, 84C...Standing line 85,86,87...fold row 88. Buttocks area 85L,85R,86L,86R...Non-adhesive area 90L,90R,91L,91R・Fixed part 10L, 10R: Leg area

Claims

1. A length along a longitudinal direction corresponding to the front-to-back direction of the wearer; A length along a width direction perpendicular to the longitudinal direction; A water-permeable skin-facing portion disposed on the skin-facing side of the wearer; a first pad fixing portion which is made of a sheet extending in the longitudinal direction and has a first bonding portion which is bonded to the skin-facing portion on the skin-facing side of the skin-facing portion on the outer side in the width direction or the longitudinal direction, and a first non-bonding portion which is not bonded to the skin-facing portion on the inner side of the first bonding portion, and which fixes the absorbent pad by inserting a part of an absorbent pad used in combination with the absorbent article between the skin-facing portion and the first pad fixing portion, the first pad fixing portion having a first pleat row which is provided in the first non-bonding portion and in which a plurality of first pleats are aligned in the longitudinal direction at a first interval, and a second pleat row which is provided in the first non-bonding portion and in which a plurality of second pleats are aligned in the longitudinal direction at a second interval different from the first interval; An absorbent article comprising:

2. the first pad fixing portion has a plurality of first elastic members provided in a stretched state in the first non-joint portion, the first pleat row and the second pleat row are formed by contracting the first non-jointed portion due to a contractile force of the first elastic members; The first elastic members are spaced apart from one another in the width direction, a distance between the first elastic members forming the first pleat row is narrower than a distance between the first elastic members forming the second pleat row; The absorbent article of claim 1.

3. the first pad fixing portion has a plurality of first elastic members provided in a stretched state in the first non-joint portion, the first pleat row and the second pleat row are formed by contracting the first non-jointed portion due to a contractile force of the first elastic members; The first elastic members are spaced apart from one another in the width direction, The first elastic members forming the first pleat row have a greater contractile force than the first elastic members forming the second pleat row. The absorbent article of claim 1.

4. A pair of the sheets arranged on both sides in the width direction is provided, so that the first pad fixing portion is arranged on both sides in the width direction, the first bonded portion is bonded to the skin-facing portion on an outer side of the first non-bonded portion in the width direction, a distance between the first joint portions of the pair of first pad fixing portions in the width direction is longer on the front side and the rear side than at a central portion in the longitudinal direction; The absorbent article according to any one of claims 1 to 3.

5. a second pad fixing portion that is configured of a sheet extending in the width direction and has a second bonding portion that is bonded to the skin-facing portion on the skin-facing side of the skin-facing portion on the outer side in the longitudinal direction, and a second non-bonding portion that is not bonded to the skin-facing portion on the inner side of the second bonding portion, and that fixes the absorbent pad by inserting a part of the absorbent pad between the skin-facing portion and the second pad fixing portion, The second pad fixing portion has a second elastic member provided in a stretched state on the sheet constituting the second pad fixing portion. The absorbent article according to any one of claims 1 to 3.

6. a third elastic member that extends through a region overlapping with the first non-jointed portion in a plan view and forms wrinkles on the skin-facing portion in the region; The absorbent article according to any one of claims 1 to 3.

7. The third elastic member extends in a curved shape in a region overlapping with the first non-joined portion. The absorbent article of claim 6.

8. The third elastic member includes a plurality of third elastic members extending along different extension lines. The absorbent article of claim 6.

9. The third elastic member extends to avoid an area corresponding to the buttocks of the wearer. The absorbent article of claim 6.

10. The first pad fixing portion has a first temporary adhesive portion that is temporarily attached to the skin-facing portion in at least a part of the first non-adhesive portion. The absorbent article according to any one of claims 1 to 3.

11. The skin-facing portion is bonded to a material arranged on a non-skin-facing side of the skin-facing portion by an adhesive, and the adhesive permeates into the skin-facing side of the skin-facing portion to form the first temporary adhesive portion. The absorbent article of claim 10.

12. the first pad fixing portion extends in the longitudinal direction and is composed of one of the sheets arranged on one side in the width direction or a pair of the sheets arranged on both sides in the width direction, The first bonded portion is bonded to the skin-facing portion on the outer side in the width direction than the first non-bonded portion. The absorbent article according to any one of claims 1 to 3.

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