Absorbent article

Abstract

To provide an absorbent article capable of suppressing leakage of excrement.SOLUTION: An absorbent article comprises: an absorber; an upper side sheet arranged at a skin face side of the absorber; a lower side sheet arranged at a non-skin face side of the absorber; a sheet region disposed on a rear side of the absorber and formed by including the upper side sheet and the lower side sheet without the presence of the absorber; a waist shrinking part formed in a position separated from a rear side end portion of the absorber, having a first elastic member disposed in a stretched state in the width direction, and shrinking in the width direction at least in a part of the waist of a wearer; a pair of side shrinking parts disposed at least on left and right both sides of the sheet region, having a second elastic member fixed in a stretched state to at least one of the upper side sheet and the lower side sheet, and shrinking in the width direction on both left and right sides of the sheet region; and a non-existence region disposed at least in a part of the sheet region without the presence of the second elastic member acting on the upper side sheet and the lower side sheet.SELECTED DRAWING: Figure 7

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 diapers are known in the art (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-87383 A Summary of the Invention [Problem to be solved by the invention]

[0004] In general, absorbent articles are worn in a state where they are tightly fitted around the wearer's waist by the contractile force of an elastic member so as to prevent leakage of excrement such as urine and feces. There is room for improvement in technology for preventing leakage of excrement from the waist in absorbent articles.

[0005] An object of the present invention is to provide an absorbent article capable of suppressing leakage of body waste. [Means for solving the problem]

[0006] 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; In the front-to-rear direction, a front body region located in front of the wearer, a rear body region located behind the wearer, and a crotch region located between the front body region and the rear body region; An absorbent disposed at least in the crotch region; An upper sheet disposed on the skin side of the absorbent body; A lower sheet disposed on the non-skin facing side of the absorbent body; a sheet region provided behind the absorbent body, the sheet region being formed including the upper sheet and the lower sheet without the absorbent body being present; a waist contraction portion that is formed at a position spaced from the rear end portion of the absorbent body, has a first elastic member that is stretched in the width direction, and contracts in the width direction around at least a portion of the waist of the wearer; a pair of side contraction portions provided on at least both left and right sides of the seat area, each having a second elastic member fixed in a stretched state to at least one of the upper sheet or the lower sheet, and contracting in the width direction on both left and right sides of the seat area; a non-existence region provided in at least a part of the sheet region, where the second elastic member acting on the upper sheet and the lower sheet is not present; Equipped with. Effect of the Invention

[0007] According to the present invention, leakage of excrement can be suppressed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a diaper according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the diaper according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of the diaper according to the embodiment 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. [Diagram 5] FIG. 5 is a cross-sectional view of an absorbent core of a diaper according to an embodiment. [Figure 6] FIG. 6 is a cross-sectional view of the diaper according to the embodiment, taken along the longitudinal direction at the center in the width direction. [Figure 7] FIG. 7 is a plan view of the rear body region of the diaper according to the embodiment in a stretched state. [Figure 8]FIG. 8 is a plan view of the rear body region of the diaper according to the first modification in a stretched state. [Figure 9] FIG. 9 is a plan view of the rear body region of the diaper according to the second modification in a stretched state. [Figure 10] FIG. 10 is a plan view of the rear body region of the diaper according to the third modification in a stretched state. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0010] <Embodiment> In this embodiment, the longitudinal direction of a tape-type disposable diaper (an example of an "absorbent article" in the present application, hereinafter simply referred to as a "diaper") is the direction connecting the front body arranged opposite the wearer's abdomen and the rear body arranged opposite the wearer's back. Between the front body (one side in the longitudinal direction) and the rear body (the other side in the longitudinal direction) (the center in the longitudinal direction), a crotch portion arranged under the wearer's crotch (opposed to the crotch). In addition, when the diaper is worn by a wearer (hereinafter abbreviated as "worn state"), the side facing the wearer's skin (the inner side when worn) is the skin-facing side, and the opposite side to the skin-facing side (the outer side when worn) is the non-skin-facing side. Furthermore, the direction connecting the skin-facing side and the non-skin-facing side is the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is the width direction. In addition, the view from the thickness direction is the planar view. Additionally, the front, back, left and right of the diaper 1 refer to the directions that correspond to the front, back, left and right of the wearer when the diaper 1 is worn by the wearer. For example, the left and right direction in this application refers to the directions that correspond to the left and right of the wearer when the diaper 1 is worn by the wearer, and the front and back direction in this application refers to the directions that correspond to the front and back of the wearer when the diaper 1 is worn by the wearer.

[0011] FIG. 1 is a perspective view of a diaper according to the present embodiment. The diaper 1 has a length along the longitudinal direction and a length along the width direction perpendicular to the longitudinal direction. The diaper 1 has a crotch region 1B, which is a region corresponding to the crotch of the wearer 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 front body of the wearer, and a back body region 1R, which is located behind the crotch region 1B and corresponds to the back body of the wearer. Tapes 2L and 2R that can be attached to a front patch 2F provided on the non-wearer side surface of the front body region 1F are provided on both left and right edges of the back body region 1R. When the tapes 2L and 2R are attached to the front patch 2F (an example of the "attached portion" of the present disclosure) with the front body region 1F arranged on the wearer's abdominal side and the back body region 1R arranged on the wearer's back side, the diaper 1 is fixed to the wearer's body in a state of surrounding the wearer's abdominal circumference and thighs. Since the diaper 1 is fixed to the wearer's body in this manner, the wearer can stand and walk around while wearing the diaper 1.

[0012] In the diaper 1, an absorbent capable of absorbing and retaining liquid is disposed mainly in the crotch region 1B. In addition, the diaper 1 has a liquid outflow path between the diaper 1 and the wearer's skin. In order to prevent the formation of gaps that would cause leakage, leg gathers 3AL, 3AR are provided in the areas surrounding the wearer's legs (thighs), three-dimensional gathers 3BL, 3BR (an example of the "leak-proof wall" of the present disclosure) are provided on the inner side of the leg gathers 3AL, 3AR in the width direction of the diaper 1, and waist gathers 3R (an example of the "waist contraction portion" of the present disclosure) are provided in the area surrounding the wearer's abdominal circumference. The leg gathers 3AL, 3AR, three-dimensional gathers 3BL, 3BR, and waist gathers 3R are brought into close contact with the wearer's skin by the elastic force (stretching force) of the elastic members. Thus, liquid discharged from the wearer's private parts is absorbed into the absorbent body of the diaper 1 without leaking out of the diaper 1. As the elastic member, a thread-like rubber (thread rubber), a strip-like rubber, or the like can be appropriately selected.

[0013] FIG. 2 is an exploded perspective view of the diaper 1. FIG. 3 is a cross-sectional view of the diaper 1 when not worn, cut in the width direction at the center in the longitudinal direction. FIG. 4 is a plan view of the diaper 1 when stretched, as viewed from the skin-facing side. Note that the elastic members 4C, 4SL, and 4SR are omitted in FIG. 4. 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 and 4KR at the positions corresponding to the long sides, and forms the exterior surface of the diaper 1. The constrictions 4KL and 4KR are provided at the positions where the wearer's thighs are located (leg surrounding regions 10L and 10R shown in FIG. 4). The cover sheet 4 is provided to reinforce the back sheet 5 described later and to improve the feel, and 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 (two-layer) structure having an inner cover sheet and an outer cover sheet. The cover sheet 4 forms the outer peripheral shape (outer shape) of the absorbent pad 1. The cover sheet 4 forms an exterior surface where the front body region 1F, the crotch region 1B, and the back body region 1R are connected.

[0014] The diaper 1 has a back sheet 5 (an example of the "lower sheet" of the present disclosure), an absorbent 6, and a top sheet 7 (an example of the "upper sheet" of the present disclosure) which are laminated in this order on the skin-facing side of the cover sheet 4. The back sheet 5, the absorbent 6, and the top sheet 7 are all sheet-like members having a substantially rectangular appearance, and are laminated in this order on the cover sheet 4 with their longitudinal directions coinciding with the longitudinal direction of the cover sheet 4. The back sheet 5, like the cover sheet 4, is a sheet formed of a water-impermeable thermoplastic resin material to suppress leakage of excrement. 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 disposed on the skin-facing side of the wearer. The top sheet 7 is liquid-permeable in part or in its entirety. Therefore, when the diaper 1 is worn, liquid excreted from the wearer passes through the top sheet 7, which may come into contact with the wearer's skin, into the absorbent 6, and is absorbed therein. For example, a woven fabric, a nonwoven fabric, or a porous film can be used as the material for the top sheet 7. The top sheet 7 may be hydrophilic. The basis weight of the top sheet 7 is, for example, 15 to 30 g / m 2 It is.

[0015] The back sheet 5, the absorbent 6, and the top sheet 7 all extend from the front body region 1F to the rear body region 1R. Therefore, when the cover sheet 4, in which the back sheet 5, the absorbent 6, and the top sheet 7 are laminated, covers the wearer's private parts, the longitudinal ends of the back sheet 5, the absorbent 6, and the 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 6 from the ventral side to the back side. Therefore, whether the wearer is in a ventral or back-down position when excreting liquid, the excreted liquid comes into contact with the absorbent 6 via the top sheet 7. The top sheet 7 and the back sheet 5 are longer in the longitudinal direction than the absorbent 6, and extend to the ends of the front body region 1F and the rear body region 1R of the diaper 1.

[0016] The diaper 1 also includes 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 in both widthwise end portions of the crotch region 1B, including the leg surrounding regions where the wearer's thighs are located. The leg surrounding regions 10L, 10R are arranged at both widthwise end portions of the crotch region 1B. The leg gathers 3AL, 3AR (see FIG. 1) are formed in the areas where the elastic members 4SL, 4SR are arranged.

[0017] The diaper 1 also has long, narrow, strip-shaped side sheets 8L, 8R (an example of the "pair of left and right leak-proof sheets" of the present disclosure). The side sheets 8L, 8R are non-permeable (liquid-impermeable) sheets provided on the long sides of the top sheet 7. Similarly to the cover sheet 4, the side sheets 8L, 8R have constrictions 8KL, 8KR at the sites where the wearer's thighs are located (leg-surrounding regions 10L, 10R shown in FIG. 4). The side sheets 8L, 8R have elastic members 8EL, 8ER (an example of the "third elastic member" of the present disclosure) for forming three-dimensional gathers 3BL, 3BR arranged along the longitudinal direction of the diaper 1. When the diaper 1 is worn, i.e., when the diaper 1 is U-shaped in side view, the side sheets 8L, 8R are drawn in the longitudinal direction by the contractile force of the elastic members 8EL, 8ER and rise from the top sheet 7 to form three-dimensional gathers 3BL, 3BR that prevent liquid from leaking out.

[0018] The cover sheet 4 is provided with elastic members 4C, which prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference, on the inner side in the width direction of the diaper 1 than the elastic members 4SL, 4SR and along the longitudinal direction of the diaper 1. The elastic members 4C are provided according to the elastic force (contractile force) required for the design of the diaper 1.

[0019] The elastic member 9ER for forming the above-mentioned waist gather 3R is disposed on the waist sheet 9R provided between the back sheet 5 and the top sheet 7 at a position further back than the end of the absorbent body 6. The elastic member 9ER is disposed between the top sheet 7 and the back sheet 5 at a position farther from the absorbent body 6 than the end of the rear body region 1R side of the waist gather 3R (the rear end side of the diaper 1), and is a sheet-like member extending wider in the width direction than the absorbent body 6. The waist sheet 9R is formed by laminating two nonwoven fabric sheets, and the elastic member 9ER is bonded between the two nonwoven fabric sheets in a stretched state in the width direction of the diaper 1. The elastic member 9ER is disposed on the waist sheet 9R with the longitudinal direction, which is the stretch direction, oriented in the left-right direction of the diaper 1. For this reason, the waist sheet 9R has contractibility in the width direction of the diaper 1, and functions as a strip-shaped elastic member together with the elastic member 9ER. When the tapes 2L, 2R provided on both the left and right sides of the waist sheet 9R are attached to the front patch 2F on the abdominal side of the wearer, the elastic member 9ER exerts a contractile force to fit the diaper 1 to the wearer and prevent the formation of a gap between the diaper 1 and the wearer's abdominal circumference.

[0020] A waist sheet 9F is provided between the back sheet 5 and the top sheet 7 at a position further to the ventral side than the end of the absorbent body 6. The waist sheet 9F is disposed between the top sheet 7 and the back sheet 5 at a position further away from the absorbent body 6 than the end of the front body region 1F side of the absorbent body 6 on the tip side (the front end side of the diaper 1), and is a sheet-like member extending wider in the width direction than the absorbent body 6. The waist sheet 9F is formed by laminating two nonwoven fabric sheets, similar to the waist sheet 9R. Note that no elastic member is disposed in the waist sheet 9F, and therefore the waist sheet 9F does not have contractibility. Note that the basis weight of the waist sheets 9F, 9R is, for example, 12 to 25 g / m 2 It is.

[0021] In the present application, the state in which sheets are overlapped is not limited to a state in which the overlapping sheets are in full contact with each other, but includes a concept including a state in which the sheets are partially overlapping each other. In addition, the state in which sheets are bonded to each other includes a concept including a state in which another sheet is interposed between the sheets and the sheets are bonded to each other via the other sheet.

[0022] Next, the absorbent body 6 will be described. The absorbent body 6 according to this embodiment has a substantially rectangular shape. In the diaper 1 according to this embodiment, the absorbent body 6 has a configuration in which the proportion of SAP is relatively high.

[0023] FIG. 5 is a cross-sectional view showing the absorbent body 6 extracted from the cross-sectional view of FIG. 3. The absorbent body 6 has an absorbent core 6C and a core wrap sheet 6W that wraps the absorbent core 6C. The core wrap sheet 6W is made of a sheet that has water permeability at least on the skin-facing side, and allows liquid that has passed through the top sheet 7 to flow into the absorbent core 6C. In this embodiment, the core wrap sheet 6W is made of two tissues. One of the two tissues is placed on the non-skin-facing side, folded into the widthwise end of the skin-facing side, and bonded to the other tissue placed on the skin-facing side, including the widthwise end of the skin-facing side. As a result, the core wrap sheet 6W covers the skin-facing side and non-skin-facing side of the absorbent core 6C to wrap the absorbent core 6C and prevent the absorbent core 6C from losing its shape. The core wrap sheet 6W may be made of a single sheet.

[0024] The absorbent core 6C has a layered structure in which, from the non-skin facing side, a flow guide layer 60A, a lower SAP layer 60B, a base layer 60C, an upper SAP layer 60D, and a diffusion layer 60E are laminated. The flow guide layer 60A and the diffusion layer 60E are formed of nonwoven fabric. The flow guide layer 60A has the function of diffusing urine throughout the entire absorbent core 6C on the non-skin facing side. The diffusion layer 60E has the function of diffusing urine throughout the entire absorbent core 6C on the skin facing side. In this embodiment, the flow guide layer 60A and the diffusion layer 60E have a basis weight of, for example, 45 g / m 2 It is formed of an airlaid nonwoven fabric.

[0025] The lower SAP layer 60B is formed by bonding a large number of SAP (Super Absorbent Polymer) particles to the skin-facing side of the flow guidance layer 60A with a hot melt adhesive. In this way, the lower SAP layer 60B, which is formed by containing SAP particles, a super absorbent polymer, is disposed on the skin-facing side of the flow guidance layer 60A. The upper SAP layer 60D is formed by bonding a large number of SAP particles to the non-skin-facing side of the diffusion layer 60E with a hot melt adhesive. In this way, the upper SAP layer 60D, which is formed by containing SAP particles, a super absorbent polymer, is disposed on the non-skin-facing side of the diffusion layer 60E. Thus, in this embodiment, two SAP layers are formed in the absorbent core 6C.

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

[0027] The base layer 60C is disposed between the two SAP layers and is made of a bulky air-through nonwoven fabric. The base layer 60C is liquid permeable and diffuses liquids such as urine into the lower SAP layer 60B and the upper SAP layer 60D. The absorbent body 6 can absorb and retain liquids such as urine by the entire lower SAP layer 60B and upper SAP layer 60D.

[0028] FIG. 6 shows a cross-sectional view of the diaper 1 when not being worn, taken along the longitudinal direction at the center in the width direction. 6 is a cross-sectional view of the core wrap sheet 6W. As shown in Fig. 6, the skin-facing side and non-skin-facing side of the core wrap sheet 6W are not bonded to each other at the longitudinal end portions of the diaper 1. The reason for this non-adhesion will be described later. The skin-facing side of the waist sheets 9F, 9R is bonded to the top sheet 7, and the non-skin-facing side is bonded to the back sheet 5. For example, a hot melt adhesive is used for this adhesion.

[0029] When the absorbent core is made of pulp, the SAP particles are entangled with the pulp fibers and are unlikely to fall off from the absorbent core. However, in this embodiment, the absorbent core 6C does not contain pulp. In this embodiment, the SAP particles are adhered to the flow guide layer 60A made of an airlaid nonwoven fabric and the diffusion layer 60E made of an airlaid nonwoven fabric. In the absorbent body 6 having such a configuration, the SAP particles are unlikely to be entangled with the fibers and the like, and the SAP particles are likely to fall off at the end sides of the absorbent body 6 in the width direction and the length direction.

[0030] Although the SAP particles in the lower SAP layer 60B are adhered to the flow guide layer 60A with a hot melt adhesive, some SAP particles may peel off and fall off from the flow guide layer 60A. For this reason, the diaper 1 according to this embodiment may contain unfixed SAP particles. If no measures are taken in the diaper, these SAP particles may leak out to the outside of the diaper. For example, if a gap is formed between the top sheet and the back sheet, the SAP particles that have fallen off from the absorbent body may spread to the longitudinal end sides of the diaper and leak out from between the top sheet and the back sheet.

[0031] Therefore, the diaper 1 according to this embodiment includes waist sheets 9F, 9R arranged at the end side of the absorbent body 6 in the longitudinal direction. The top sheet 7 and the back sheet 5 are weakly bonded or non-bonded to each other at the end side of the absorbent body 6, i.e., between the absorbent body 6 and the waist sheets 9F, 9R. More specifically, the top sheet 7 and the back sheet 5 are weakly bonded or non-bonded in the areas D1 and D2 shown in FIG. 6. D1 is the distance between the absorbent body 6 and the waist sheet 9R on the side of the rear body region 1R. D2 is the distance between the absorbent body 6 and the waist sheet 9F on the side of the front body region 1F. The specific lengths of D1 and D2 are omitted. Here, the term "weakly bonded" refers to an adhesive strength that allows the sheets bonded to each other to be peeled off without tearing, and is an adhesive strength that is expected to cause the sheets to naturally peel off due to the action (for example, the contraction force of an elastic member) that occurs when the diaper 1 is worn. By making the top sheet 7 and the back sheet 5 non-bonded or weakly bonded in the regions D1 and D2, the SAP particles fall off the lower SAP layer 60B and the upper SAP layer 60D, enter between the top sheet 7 and the back sheet 5, and pull them apart, forming a space (hereinafter sometimes referred to as the "SAP storage space") between the top sheet 7 and the back sheet 5, and the SAP particles can be stored in the SAP storage space. In addition, since the waist sheets 9F and 9R are arranged on the longitudinal end side of the SAP storage space, the SAP particles are prevented from moving toward the end side of the waist sheets 9F and 9R. Since the waist sheets 9F and 9R are bonded relatively strongly to the top sheet 7 and the back sheet 5, the SAP storage space is prevented from communicating with the outside of the diaper 1, and the leakage of the SAP particles to the outside can be prevented. Furthermore, since the waist sheets 9F, 9R are wider than the absorbent body 6, even if SAP particles that have leaked into the SAP storage space move in the width direction, the waist sheets 9F, 9R can suppress the leakage of the SAP particles.

[0032] In the region D2, when the top sheet 7 and the back sheet 5 are not bonded, no hot melt adhesive is applied between the top sheet 7 and the back sheet 5, and when the top sheet 7 and the back sheet 5 are weakly bonded, a small amount of hot melt adhesive is applied between the top sheet 7 and the back sheet 5, so that the region D2 has a relatively low rigidity and is easily folded. Here, when the diaper 1 is worn, the hook portions 20L, 20R of the tapes 2L, 2R are affixed to the loop portions of the front patch 2F, and the tapes 2L, 2R When the front (abdominal) end and the region within D2 overlap in the thickness direction, the diaper 1 is more likely to bend toward the non-skin facing side in front of the front end. In this way, when the diaper 1 is worn, the top sheet 7 and the back sheet 5 bend toward the non-skin facing side in the region within D2, and the SAP particles can be blocked at the bent portion.

[0033] Furthermore, the waist sheets 9F, 9R have a thickness larger than the average particle size of the SAP particles. For example, the average particle size of the SAP particles is 0.3 to 0.4 mm, and the waist sheets 9F, 9R are thicker than 0.4 mm, for example, about 1 mm to 1.5 mm. Even if the SAP particles move into the SAP storage space, the SAP storage space is located between the absorbent body 6 and the waist sheets 9F, 9R, and therefore the thickness of the absorbent body 6 and the waist sheets 9F, 9R can prevent the SAP in the SAP storage space from coming into contact with the wearer's skin surface via the top sheet 7. This makes it possible for the diaper 1 to prevent the SAP particles that have moved into the SAP storage space from feeling thick and giving a foreign body sensation to the wearer.

[0034] Furthermore, when the distances D1, D2 between the absorbent body 6 and the waist sheets 9F, 9R are 10 mm or less, the skin of the wearer's abdomen and back is curved, so that the skin is unlikely to come into contact with the top sheet 7 above the SAP storage space, and the SAP does not give a foreign body sensation to the skin even when body pressure is applied to the diaper 1. By setting the absorbent body 6 and the waist sheets 9F, 9R to a thickness of 1 mm or more, the wearer's skin comes into contact with the absorbent body 6 and the waist sheets 9F, 9R, and the wearer's skin is prevented from coming into contact with the SAP in the SAP storage space. Therefore, the diaper 1 can prevent the wearer from feeling uncomfortable due to contact with SAP particles.

[0035] Moreover, each distance D1, D2 between the absorbent body 6 and the waist sheets 9F, 9R in the longitudinal direction of the diaper 1 is preferably at least twice the average particle size of the SAP particles. More preferably, each distance D1, D2 is at least 10 times the average particle size of the SAP particles. When the SAP particles fall off the lower SAP layer 60B and the upper SAP layer 60D and a space for storing SAP is formed between the top sheet 7 and the back sheet 5, by setting each distance between the absorbent body 6 and the waist sheets 9F, 9R as described above, it is possible to prevent the force of the SAP particles peeling the top sheet 7 and the back sheet 5 from acting on the adhesion between the waist sheets 9F, 9R and the top sheet 7 and the back sheet 5. Therefore, the diaper 1 can prevent the waist sheets 9F, 9R from peeling off the top sheet 7 and the back sheet 5, and suppress leakage of the SAP particles.

[0036] In addition, the waist sheet 9F on the front body region 1F side does not have contractility. Therefore, in the front body region 1F side, the core wrap sheet 6W is not subjected to a contraction force in the width direction, and the core wrap sheet 6W is prevented from opening in the thickness direction. In addition, when a contraction force is applied to the absorbent 6, the SAP particles are likely to fall off from the lower SAP layer 60B and the upper SAP layer 60D, but in the front body region 1F side, the absorbent 6 is not subjected to a contraction force, and the SAP particles are less likely to fall off.

[0037] The crotch region side of the waist sheet 9F and the back sheet 5 may be weakly bonded or not bonded at all. This forms a space for storing SAP between the crotch region side of the waist sheet 9F and the back sheet 5, and when SAP particles are stored in the space, the waist sheet 9F is disposed closer to the skin than the space, thereby reducing the contact with the skin (foreign body sensation) of the SAP particles in the space. As described above, the top sheet 7 and the back sheet 5 are folded toward the non-skin side in the region within D2 when worn, thereby further reducing the contact with the skin of the SAP particles in the space.

[0038] As shown in FIG. 4, the side sheets 8L, 8R form three-dimensional gathers 3BL, 3BR by the contraction force of the elastic members 8EL, 8ER, which are arranged along the widthwise ends of the top sheet 7 and extend in the longitudinal direction of the diaper 1. The side sheets 8L, 8R are not bonded to the top sheet 7 at their widthwise inner ends, and the widthwise inner ends become free ends 8AL, 8AR to form the three-dimensional gathers 3BL, 3BR standing on the skin-facing side. The side sheets 8L, 8R are provided with joints 8BL, 8BR at their widthwise outer ends to be joined to the sheets arranged on the non-skin-facing side. Specifically, the joints 8BL, 8BR are areas that are bonded to the top sheet 7, back sheet 5 and cover sheet 4 arranged on the non-skin-facing side by a hot melt adhesive. The inner ends of the joints 8BL, 8BR in the widthwise direction of the diaper become the fold-back lines 30L, 30R that become the standing ends of the widthwise three-dimensional gathers 3BL, 3BR. The joints 8BL, 8BR are joints that form the fold lines 30L, 30R, since their widthwise ends become the fold lines 30L, 30R. The side sheets 8L, 8R are not bonded to the top sheet 7 on the inside of the fold lines 30L, 30R. Therefore, when the diaper 1 is worn, the inside of the fold lines 30L, 30R of the side sheets 8L, 8R rise up toward the skin side due to the contractile force of the elastic members 8EL, 8ER provided on the side sheets 8L, 8R in a state in which the diaper 1 is stretched in the longitudinal direction, forming three-dimensional gathers 3BL, 3BR.

[0039] When the three-dimensional gathers 3BL, 3BR are raised, the fixed parts 31L, 31R (one example of the "pair of front and rear fixed parts" of the present disclosure) are formed as the raised ends in the longitudinal direction of the diaper 1. In FIG. 4, the fixed parts 31L, 31R are illustrated as being filled in. The fixed parts 31L, 31R are formed on both ends of the diaper 1 in the longitudinal direction, inside the fold lines 30L, 30R in the width direction of the diaper 1. The fixed parts 31L, 31R are formed on both sides of the front body region 1F and the back body region 1R, and each fixed part 31L, 31R is disposed across the absorbent body 6 and the waist sheets 9F, 9R when viewed in the thickness direction. The fixed parts 31L, 31R are formed by applying a hot melt adhesive between the non-skin facing sides of the side sheets 8L, 8R and the top sheet 7. The side sheets 8L, 8R are also fixed to the top sheet 7 by fixing portions 31L, 31R.

[0040] Here, there is no non-adhesive region between the fixing parts 31L, 31R and the layers between the top sheet 7 and the absorbent body 6, and between the top sheet 7 and the waist sheet 9F, 9R. The "between layers" refers to the between the sheets, and the top sheet 7 and the absorbent body 6, and the top sheet 7 and the waist sheet 9F, 9R are adhered to the non-skin-facing side of the fixing parts 31L, 31R. The fixing parts 31L, 31R increase the rigidity of the longitudinal end side of the absorbent body 6. In addition, since the fixing parts 31L, 31R are arranged across the waist sheet 9F, which has no contractile force, contraction of the absorbent body 6 is also suppressed on the front body region 1F side, and therefore, on the front side of the absorbent body 6, it is possible to suppress the SAP particles from falling off the lower SAP layer 60B and the upper SAP layer 60D. Furthermore, even if the fixing parts 31L, 31R are disposed across the waist sheet 9R having a contractile force, the rigidity of the absorbent body 6 on the rear body region 1R side can be increased, thereby preventing the rear end of the absorbent body 6 from twisting. Note that, in order to prevent the absorbent body 6 from twisting, the fixing parts 31L, 31R are preferably formed so as to overlap the absorbent body 6 on the end side in the width direction of the absorbent body 6.

[0041] Furthermore, even if the SAP particles leak outside the fold lines 30L, 30R and penetrate between the side sheets 8L, 8R and the top sheet 7 or the back sheet 5, the SAP can be contained in the SAP containing space and the waist sheets 9F, 9R can prevent the SAP particles from leaking to the outside.

[0042] As shown in Fig. 4, the top sheet 7 has embossed grooves 20 formed in a diagonal lattice pattern. The embossed grooves 20 are formed by embossing the top sheet 7 (3D embossing). The top sheet 7 is made by laminating two nonwoven fabric sheets. The two nonwoven fabric sheets may be embossed to form the embossed grooves 20. The top sheet 7 may be composed of a single nonwoven fabric sheet, and the embossed grooves 20 may be formed by embossing this nonwoven fabric sheet. By forming the embossed grooves 20 in the top sheet 7, the diaper 1 can be made less susceptible to the wearer to the particle sensation of the SAP particles contained in the lower SAP layer 60B and the upper SAP layer 60D of the absorbent body 6, and the SAP particles that have fallen off the flow guide layer 60A and the diffusion layer 60E, and can thus suppress a decrease in comfort when worn.

[0043] Next, the rear body region 1R of the diaper 1 according to this embodiment will be described with reference to Fig. 7. Fig. 7 is a view showing only the rear body region of the diaper according to this embodiment in a stretched state. Note that Fig. 7 shows the state in which the tape 2L is folded.

[0044] The diaper 1 according to this embodiment includes a sheet region 11 that is located behind the absorbent body 6 and is formed without the absorbent body and includes the top sheet 7 and the back sheet 5. The sheet region 11 is an area formed by the sheet materials of the top sheet 7, the back sheet 5, the waist sheet 9R and the cover sheet 4. Elastic members 9ER are arranged in the sheet region 11. In this embodiment, the elastic members 9ER are rubber threads, and a plurality of rubber threads as the elastic members 9ER are provided in a stretched state in the width direction of the diaper 1.

[0045] Here, the elastic members 9ER are divided into an elastic member 9ER1 (an example of a "first elastic member" in the present disclosure) that is arranged relatively to the rear side of the diaper 1, and an elastic member 9ER2 (an example of a "second elastic member" in the present disclosure) that is arranged relatively to the front side of the diaper 1. The elastic member 9ER1 is an elastic member for forming a waist gather 3R. The waist gather 3R contracts the rear waist circumference of the diaper 1 in the width direction when worn, and fits the diaper 1 closely to the waist circumference of the wearer.

[0046] The elastic member 9ER2 is provided in the sheet region 11, and is fixed in a stretched state to the top sheet 7 and the back sheet 5 via the waist sheet 9R. The elastic member 9ER2 may be fixed to only one of the top sheet 7 or the back sheet 5 via the waist sheet 9R. The extending region of the elastic member 9ER2 is provided with a non-existence region 13 in which the elastic member 9ER2 acting on neither the top sheet 7 nor the back sheet 5 is present. The elastic member 9ER2 is bonded to the waist sheet 9R, and in the non-existence region 13, the waist sheet 9R is not bonded to the top sheet 7 and the back sheet 5. Therefore, in the non-existence region 13, the elastic member 9ER2 is not bonded to the top sheet 7 and the back sheet 5, and the non-existence region 13 is a region in which the elastic member 9ER2 acting on the elastic force is not present.

[0047] The non-existent region 13 is provided so that its longitudinal direction extends in the width direction of the diaper 1, centered at the center in the width direction of the diaper 1. On both left and right sides of the non-existent region 13, elastic members 9ER2 are fixed to the top sheet 7 and the back sheet 5 via the waist sheet 9R, and a pair of side gathers 12L, 12R (an example of the "side contraction portion" of the present disclosure) that contract in the width direction of the diaper 1 on both left and right sides of the sheet region 11 due to the elastic force of the elastic members 9ER2 are formed.

[0048] Waist gathers 3R and side gathers 12L, 12R are provided on the rear and left and right sides of the non-existent region 13 where the absorbent body 6 is not present and where the elastic force of the stretched elastic member does not act. The diaper 1 fits closely to the wearer's skin by contracting the waist gathers 3R and side gathers 12L, 12R. Because the waist gathers 3R and side gathers 12L, 12R fit closely to the skin, the non-existent region 13 is relatively raised above the skin surface. When the diaper 1 is worn, the non-existent region 13 is raised above the skin surface, thereby preventing the non-existent region 13 from being pulled out of the skin. 13 deforms toward the non-skin facing side, forming a space between the non-existence region 13 and the skin. The diaper 1 can store feces (e.g., watery feces) excreted by the wearer in this space. Furthermore, when the wearer excretes a large amount of urine while lying on his / her back, the diaper 1 can temporarily store urine in this space. In this way, the diaper 1 according to this embodiment can prevent excrement from leaking from the back side by forming a space for storing watery feces and urine that has flowed behind the absorbent body 6. The diaper 1 according to this embodiment can prevent excrement from leaking.

[0049] 7, the rear fixed parts 31L, 31R are provided on the rear side of the diaper 1 relative to the non-existence region 13. With this configuration, the three-dimensional gathers 3BL, 3BR stand upright in the left-right direction of the non-existence region 13 in the diaper 1, and thus can block excrement such as urine and watery stool that leaks outward in the width direction from the non-existence region 13. Thus, the diaper 1 can prevent lateral leakage of excrement. In addition, in the longitudinal direction of the diaper 1, the three-dimensional gathers 3BL, 3BR stand upright from the fixed parts 31L, 31R, and thus the three-dimensional gathers 3BL, 3BR stand upright on the width direction outer side of the non-existence region 13. When the rear fixing parts 31L, 31R are provided so as to partially overlap the non-existence region 13, the front end parts of the fixing parts 31L, 31R become the folding starting points of the non-existence region 13, forming spaces on the non-skin side of the non-existence region 13, and allowing the three-dimensional gathers 3BL, 3BR to stand up from the skin-facing side of the spaces. This configuration also enables the diaper 1 to prevent excrement from leaking from the back.

[0050] Moreover, the side gathers 12L, 12R are provided on the outer side in the width direction of the diaper 1 than the fold lines 30L, 30R which are the widthwise standing ends of the three-dimensional gathers 3BL, 3BR. With this configuration, the diaper 1 can arrange the widthwise standing ends of the three-dimensional gathers 3BL, 3BR at the left and right ends of the non-existence region 13, and the contraction of the side gathers 12L, 12R can press the three-dimensional gathers 3BL, 3BR against the wearer's skin. Therefore, the diaper 1 can make the three-dimensional gathers 3BL, 3BR stand up toward the skin, thereby suppressing side leakage of excrement.

[0051] In addition, if the non-existence region 13 is provided only in the widthwise center of the diaper 1, and the side gathers 12L, 12R are formed to extend to the inside of the fold lines 30L, 30R in the widthwise direction, the non-skin side of the non-existence region 13 is pulled outward in the widthwise direction by the contraction of the side gathers 12L, 12R, making it difficult to form a space on the non-skin side of the non-existence region 13. As a result, the diaper cannot contain excrement in this space, and cannot prevent back leakage. In addition, the contraction of the side gathers 12L, 12R pulls the non-existence region 13 outward in the widthwise direction, making the non-existence region 13 closer to a flat state, making it easier for liquids such as urine to flow outward from the non-existence region 13.

[0052] On the other hand, in the diaper 1 of this embodiment, the non-existence region 13 is arranged to extend widthwise outward of the fold-back lines 30L, 30R, and as a result, the side gathers 12L, 12R are arranged widthwise outward of the fold-back lines 30L, 30R, so that the non-existence region 13 deforms to bulge toward the non-skin facing side, forming a space, which can prevent back leakage.

[0053] Furthermore, the length of the non-present region 13 in the longitudinal direction of the diaper 1 is equal to or greater than the thickness of the rear end of the absorbent body 6. With this configuration, when the diaper 1 is folded starting from the rear end of the absorbent body 6, the non-present region 13 has the necessary length to swell toward the non-skin facing side to form a space, making it easier to form the space. For example, it is preferable that the thickness of the rear end of the absorbent body 6 is 1.5 to 4.0 mm, and the length of the non-present region 13 in the longitudinal direction of the diaper 1 is 10 mm or more.

[0054] As described above, in the non-existence region 13, the elastic member 9ER2 is not attached to the top sheet 7 and the back sheet 5. That is, in the non-existence region 13, the elastic member 9ER2 extends in a state of not being attached to either the top sheet 7 or the back sheet 5. Before the diaper 1 is worn, the waist gather 3R contracts in the left-right direction, but since the absorbent body 6, which has a relatively high rigidity, is disposed on the crotch region side of the waist gather 3R, the rear end of the absorbent body 6 is in a non-contracted state. Therefore, the elastic member 9ER2 in the non-existence region 13 and the waist sheet 9R to which the elastic member 9ER2 is attached move closer to the contracted waist gather 3R side. Even when the diaper 1 is worn, the waist gather 3R contracts more than the absorbent body 6 in the crotch region side, so that the elastic member 9ER2 in the non-existence region 13 and the waist sheet 9R to which the elastic member 9ER2 is attached move closer to the contracted waist gather 3R side. As a result, the elastic members 9ER2 in the non-present regions 13 are closer to the waist gathers 3R, and the non-present regions 13 are more likely to bend toward the non-skin side in the extending regions of the elastic members 9ER2 closer to the waist gathers 3R. As a result, the non-present regions 13 of the diaper 1 are more likely to deform so as to bulge toward the non-skin side, forming a space between the non-present regions 13 and the skin side.

[0055] Furthermore, in the non-present region 13, the top sheet 7 and the back sheet 5 are not adhered to the waist sheet 9R, and therefore the top sheet 7 and the back sheet 5 are not adhered to each other. Since the top sheet 7 and the back sheet 5 are not adhered to each other, the non-present region 13 has a relatively lower rigidity than the surrounding area where the top sheet 7 and the back sheet 5 are adhered. For this reason, the non-present region 13 is prone to deform so as to bulge towards the non-skin facing side, and spaces are easily formed.

[0056] The diaper 1 also includes tapes 2L, 2R arranged on the outer side of the waist gather 3R in the width direction. As shown in Figs. 4 and 7, the tapes 2L, 2R have hook portions 20L, 20R (an example of the "adhesive portion" of the present disclosure) arranged on the wearer's skin side. The hook portions 20L, 20R are attached to the front patch 2F, which is provided on the exterior surface of the front body region 1F and has an adhesive loop formed thereon. This allows the diaper 1 to be fixed around the wearer's waist. Here, as shown in Fig. 7, the hook portions 20L, 20R are arranged on the rear side of the diaper 1 relative to the non-existence region 13. When the diaper 1 is worn, the area connecting the left and right hook portions 20L, 20R is the waist circumference, which is the part that is most stretched in the width direction, and the areas before and after the area are in a state of being shrunk in the width direction compared to the area connecting the hook portions 20L, 20R. For this reason, even when the wearer's waist circumference is near the upper limit of the size of the diaper 1 and the area connecting the hook portions 20L, 20R is stretched to its maximum, the non-existent area 13 located in front of the waist gather 3R is not completely stretched in the width direction of the diaper 1, and the non-existent area 13 bulges toward the non-skin side, forming a space between the non-existent area 13 and the skin side.

[0057] In the diaper 1 according to the present embodiment, the corners on both outer sides in the width direction at the rear end of the absorbent body 6 can be folded inward by contraction of the waist gathers 3R. If the corners of the absorbent body are not folded by contraction of the waist gathers because the rigidity of the absorbent body is too high, the contraction of the non-existence region 13 is also suppressed, and there is no room for the non-existence region 13 to bulge toward the non-skin side, and as a result, no space is formed between the non-existence region 13 and the skin side. On the other hand, the diaper 1 according to the present embodiment is formed with a rigidity such that the corners on the rear side of the absorbent body 6 are folded inward, so that the non-existence region 13 can also be contracted by the contraction force of the waist gathers 3R and bulge toward the non-skin side to form a space. In addition, the absorbent body 6 may be provided with a folding line so that the corners of the absorbent body 6 can be easily folded inward. The folding line is formed on both the left and right sides of the rear side of the absorbent body 6 so as to extend from the outer side in the width direction to the inner side in the width direction from the front side to the rear side. The folding lines may be compressed grooves, slits, or may be formed by actually folding the absorbent body 6.

[0058] <Variation 1> Next, a diaper according to Modification 1 of this embodiment will be described with reference to Fig. 8. Fig. 8 is a view showing only the rear body region of the diaper according to Modification 1 in an expanded state. Note that Fig. 8 illustrates a state in which tape 2L is folded.

[0059] The diaper 1 according to this modification is characterized in that the elastic members 9ER2 are not actually present in the non-existence region 13. As shown in FIG. 8, the elastic members 9ER2 are present only on the left and right sides of the non-existence region 13, and do not extend through the non-existence region 13. In the diaper 1 according to this modification, the waist gathers 3R and the side gathers 12L, 12R are in close contact with the skin, so that the non-existence region 13 is relatively raised above the skin surface. When the diaper 1 is worn, the non-existence region 13 is raised above the skin surface, so that the non-existence region 13 bulges toward the non-skin surface side, and a space is formed between the non-existence region 13 and the skin. The diaper 1 according to this modification stores excrement in this space, thereby preventing leakage of the excrement.

[0060] <Variation 2> Next, a diaper according to Modification 2 of the present embodiment will be described with reference to Fig. 9. Fig. 9 is a view showing only the rear body region of the diaper according to Modification 2 in an expanded state. Note that Fig. 9 illustrates a state in which tape 2L is folded.

[0061] The diaper 1 according to this modification is characterized in that the rear end portion of the absorbent body 6 has a shape in which there are no corners on either outer side in the width direction. Specifically, the rear end portion of the absorbent body 6 is formed into a chamfered shape 6M in which both outer sides in the width direction are chamfered. The corners of the absorbent body 6 may be chamfered after it is formed, or it may be formed so that there are no corners from the beginning.

[0062] At the rear end of the absorbent body 6, both outer sides in the width direction are likely to shrink inward due to the shrinkage of the waist gathers 3R due to the absence of corners. As a result, the non-existent regions 13 also shrink due to the shrinkage force of the waist gathers 3R, and can swell towards the non-skin facing side to form a space.

[0063] <Variation 3> Next, a diaper according to Modification 3 of the present embodiment will be described with reference to Fig. 10. Fig. 10 is a view showing only the rear body region of the diaper according to Modification 3 in an expanded state. Note that Fig. 10 illustrates a state in which tape 2L is folded.

[0064] In the diaper 1 according to this modification, when viewed in the thickness direction, the absorbent body 6 extends in part of the width direction at a position overlapping the front end of the non-present region 13. This configuration allows a step to be formed at the boundary between the non-present region 13 and the absorbent body 6, and allows the non-present region 13 to be deformed further toward the non-skin facing side to form a space.

[0065] The absorbent body 6 also has SAP particles at a position overlapping with the front end of the non-presence region 13. These SAP particles are arranged in a lower SAP layer 60B and an upper SAP layer 60D shown in Fig. 5. The SAP particles near the boundary with the non-presence region 13 absorb moisture and expand, thereby making it possible to enlarge the step formed at the boundary between the non-presence region 13 and the absorbent body 6 and to deform the non-presence region 13 further toward the non-skin facing side to form a space.

[0066] In addition, the upper SAP layer 60D may contain more SAP particles than the lower SAP layer 60B at the position overlapping the front end of the non-existent region 13. If a large amount of SAP particles are arranged in the upper SAP layer 60D, which is on the skin side near the boundary with the non-existent region 13, and the SAP particles in the upper SAP layer 60D absorb moisture and expand, the SAP particles formed in the boundary between the non-existent region 13 and the absorbent body 6 will expand. Therefore, the non-existence region 13 can be expanded further toward the non-skin surface side to form a space.

[0067] <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 absorbent pads and pants-type disposable diapers.

[0068] For example, even in a pants-type diaper, by providing the non-existent region 13 and the side gathers 12L, 12R in front of the waist gathers in the rear body region, the non-existent region 13 can be expanded toward the non-skin side, thereby forming a space between the non-existent region 13 and the skin surface. This allows the pants-type diaper to suppress leakage of excrement.

[0069] Furthermore, when the present invention is applied to a tape-type or pants-type diaper, even if the wearer's abdomen expands due to breathing or ingesting food and drink, a space can be formed by the non-existent area 13, and the stuffy air can be discharged from the waist gathers through this space, thereby suppressing stuffiness.

[0070] The features included in each of the embodiments and the modified examples thereof disclosed above can be combined with each other. [Explanation of symbols]

[0071] 1. Diapers 1B...Inseam area 1F: Front body area 1R: Back body area 2L, 2R Tape 2F: Front patch 3BL, 3BR Elastic member 3L, 3R: 3D gathers 4. Cover sheet 5. Back sheet 6. Absorber 6C··Absorbent core 6W··Core wrap sheet 6M·· Chamfered shape 7. Top sheet 8R, 8L··Side seat 8EL, 8ER Elastic material 9F, 9R West Seat 9ER Elastic material 11. Sheet area 12L, 12R: Side gathers 13...Non-existence area 20 Embossed groove 30L, 30R ·· Folding line 31L, 31R · Fixed part 60A･･･Driving layer 60B...Lower SAP layer 60C·Base layer 60D··Upper SAP layer 60E Diffusion layer

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; In the front-to-rear direction, a front body region located in front of the wearer, a rear body region located behind the wearer, and a crotch region located between the front body region and the rear body region; An absorbent body disposed at least in the crotch region; An upper sheet disposed on the skin side of the absorbent body; A lower sheet disposed on the non-skin facing side of the absorbent body; a sheet region provided behind the absorbent body, the sheet region being formed including the upper sheet and the lower sheet without the absorbent body being present; a waistline contraction portion that is formed at a position spaced from the rear end portion of the absorbent body, has a first elastic member that is stretched in the width direction, and contracts in the width direction around at least a portion of the waistline of the wearer; a pair of side contraction portions provided at least on both the left and right sides of the seat area, the side contraction portions having second elastic members fixed in a stretched state to at least one of the upper sheet or the lower sheet, and contracting in the width direction on both the left and right sides of the seat area; a non-existence region provided in at least a portion of the sheet region, where the second elastic member acting on the upper sheet and the lower sheet is not present; An absorbent article comprising:

2. A pair of left and right leak-proof sheets are disposed on both sides of the upper sheet in the width direction and extend in the longitudinal direction, The leak-proof sheet is a leak-preventing wall having an inner side in the width direction that is not bonded to the upper sheet and an inner end portion in the width direction that is a free end and stands on the skin side; a third elastic member provided on the leak preventing wall in a stretched state in the longitudinal direction; a joint portion that is provided on the outer side of the leak preventing wall in the width direction and that is joined to the upper sheet to form a standing end of the leak preventing wall in the width direction; a pair of front and rear fixing parts that are provided on both outer sides of the leak preventing wall in the longitudinal direction and form upstanding ends in the longitudinal direction when the leak preventing wall stands up; having The rear fixing portion is provided rearward of the non-existence region. The absorbent article of claim 1.

3. The pair of side contraction portions are provided on the outer side in the width direction than the upright ends in the width direction. The absorbent article of claim 2.

4. The length of the non-existent region in the longitudinal direction is equal to or greater than the thickness of the rear end portion of the absorbent body. The absorbent article according to any one of claims 1 to 3.

5. the second elastic member extends in the non-existing region without being attached to either the upper sheet or the lower sheet; The absorbent article according to any one of claims 1 to 3.

6. In the non-existence region, the upper sheet and the lower sheet are not adhered to each other. The absorbent article according to any one of claims 1 to 3.

7. A tape having an adhesive portion disposed on the skin side and disposed outside the waistline contraction portion in the width direction; an attachment portion provided on an exterior surface of the front body region and to which the attachment portion can be attached; Equipped with The adhesive portion is provided on the rear side of the non-existence area. The absorbent article according to any one of claims 1 to 3.

8. At the rear end portion of the absorbent body, both outer sides in the width direction are bendable by contraction of the waistline contraction portion. The absorbent article according to any one of claims 1 to 3.

9. The rear end of the absorbent body has a shape in which there are no corners on either outer side in the width direction. The absorbent article according to any one of claims 1 to 3.

10. When viewed in the thickness direction, the absorbent body extends in a part of the width direction at a position overlapping with the front end portion of the non-existent region. The absorbent article according to any one of claims 1 to 3.

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