Absorbent articles
The absorbent article design with elastic-contracted leak-proof sheets forms three-dimensional gathers to improve lateral leakage prevention, addressing the need for cost-effective and efficient containment in absorbent articles.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- OJI HLDG CORP
- Filing Date
- 2022-07-07
- Publication Date
- 2026-06-23
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Absorbent articles like disposable diapers require a simple structure to effectively prevent lateral leakage of excretions while being cost-effective.
An absorbent article with a design featuring a water-permeable skin-side sheet and non-water-permeable leak-proof sheets on both sides, where the leak-proof sheets have free ends that rise due to elastic contraction, forming three-dimensional gathers to prevent lateral leakage.
Enhances the effectiveness of lateral leakage prevention without increasing complexity or cost, ensuring efficient absorption and containment of excretions.
Smart Images
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Abstract
Description
Technical Field
[0001] The present invention relates to absorbent articles.
Background Art
[0002] Disposable diapers, urine pads, etc. are known as absorbent articles. These absorbent articles have a function of suppressing leakage to the outside of excretions such as feces and urine discharged from the wearer. As one of the means for achieving this function, non-water-permeable sheets arranged on both sides in the width direction are urged with thread rubber or the like and brought into contact with the skin of the wearer to prevent lateral leakage of excretions (Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Absorbent articles such as disposable diapers are frequently replaced and are required to be inexpensive. For this reason, it is desirable to exhibit a lateral leakage prevention effect with a structure as simple as possible.
Means for Solving the Problems
[0005] An absorbent article according to one aspect of the present invention is an absorbent article comprising a front body region facing the wearer's abdomen, a back body region facing the wearer's back, and a crotch region located between the front body region and the back body region where an absorbent is placed, all connected together, the absorbent article comprising: an absorbent; a water-permeable skin-side sheet provided on the skin-side side of the absorbent; and a pair of non-water-permeable leak-proof sheets provided on both sides in the width direction of the skin-side side of the skin-side sheet and extending in the longitudinal direction, wherein on the inside in the width direction of the leak-proof sheet is a leak-proof portion that is connected to the skin-side sheet on the outside in the width direction, with the inside end in the width direction being a free end, and is provided near the inside end in the width direction and stands upright on the skin side by the contraction force of a contraction member extending in the longitudinal direction, the longitudinal end of the leak-proof portion is bonded to the skin-side sheet to form a fixed portion, and the free end side of the leak-proof portion is bent outward in the width direction, the absorbent article. [Effects of the Invention]
[0006] According to the present invention, the effect of preventing lateral leakage of absorbent articles can be improved. [Brief explanation of the drawing]
[0007] [Figure 1] Figure 1 is an external perspective view of the absorbent pad according to the embodiment. [Figure 2] Figure 2 is a plan view of an absorbent pad according to an embodiment. [Figure 3] Figure 3 is a cross-sectional view of an absorbent pad according to an embodiment. [Figure 4] Figure 4 shows the absorbent pad according to the embodiment folded in the width direction. [Figure 5] Figure 5 shows the absorbent pad according to the embodiment folded in the longitudinal direction. [Figure 6] Figure 6 shows the packaging state of the absorbent pad according to the embodiment. [Modes for carrying out the invention]
[0008] The following describes an absorbent article according to an embodiment of the present invention with reference to the drawings. Note that the configurations of the following embodiments are illustrative, and the present invention is not limited to these embodiments.
[0009] In this embodiment, for a replaceable absorbent pad (an example of an "absorbent article" as referred to in this application), the direction connecting the front panel positioned opposite the wearer's abdomen and the back panel positioned opposite the wearer's back is defined as the longitudinal direction. Between these front panel (one side in the longitudinal direction) and back panel (the other side in the longitudinal direction) (in the center in the longitudinal direction), the inseam section, positioned between the wearer's legs (opposite the crotch), is connected. Furthermore, when the absorbent pad is attached to the wearer (hereinafter abbreviated as "attached state"), the side facing the wearer's skin (the inside when attached) is defined as the skin side, and the side opposite the skin side (the outside when attached) is defined as the non-skin side. In addition, the direction connecting the skin side and the non-skin side is defined as the thickness direction, and the direction perpendicular to both the longitudinal direction and the thickness direction is defined as the width direction. Moreover, viewing from the thickness direction is defined as a plan view.
[0010] In this embodiment, a replaceable absorbent pad will be used as an example. This embodiment relates to an absorbent article that is biased with elastic thread or the like (three-dimensional gathers), and is also applicable to pant-type diapers and tape-type diapers equipped with three-dimensional gathers.
[0011] Figure 1 is an external perspective view of an absorbent pad according to an embodiment. The absorbent pad 1 is an absorbent article that comes into contact with the wearer's skin by being placed between the diaper or undergarment and the skin. When the absorbent pad 1 is placed inside a tape-type diaper or a pull-up type diaper, the absorbent pad 1 holds and absorbs the waste, so the waste does not flow into the diaper, and the time the diaper can be used can be extended.
[0012] The absorbent pad 1 has a crotch area 1B that covers the wearer's genitals when worn, a front body area 1F located in front of the crotch area 1B and corresponding to the wearer's front body, and a back body area 1R located behind the crotch area 1B and corresponding to the wearer's back body. The absorbent pad 1 has a constricted crotch area 1B, a front body area 1F that is wider than the crotch area 1B, and a back body area 1R that is wider than the front body area 1F, and as a whole, it has a roughly gourd-shaped outer form.
[0013] The front body region 1F, back body region 1R, and crotch region 1B of the absorbent pad 1 incorporate a gourd-shaped absorbent body 6, with the crotch area narrowed, centered around the crotch region 1B. A back sheet 5, substantially the same shape as the absorbent body 6, is provided on the non-skin side of the absorbent body 6. The back sheet 5 is a sheet formed from a thermoplastic liquid-impermeable resin such as polyethylene film to suppress leakage of discharged liquid that flows into the absorbent body 6. The back sheet 5 may also be made of a material that has breathability to suppress stuffiness when worn.
[0014] A cover sheet 4 is provided on the non-skin side of the back sheet 5. The cover sheet 4 forms the outer surface of the absorbent pad 1 and has rigidity to withstand friction with other diapers, underwear, etc. Generally, a nonwoven fabric made of synthetic fibers such as polypropylene, polyethylene, or polyethylene terephthalate is used for the cover sheet 4. The cover sheet 4 may be permeable to liquids or may be impermeable to liquids.
[0015] The absorbent core 6 is provided with a top sheet 8, which is a water-permeable skin-facing sheet. The top sheet 8 is a sheet made of a spunbond nonwoven fabric containing thermoplastic resin fibers, an air-through nonwoven fabric, etc., which is positioned on the skin-facing side of the wearer so as to cover the absorbent surface of the absorbent core 6. The top sheet 8 is partially or entirely permeable to liquids. When the absorbent pad 1 is attached, the discharged liquid from the wearer enters the absorbent core 6 through the top sheet 8, which can come into contact with the wearer's skin, and is absorbed there. The top sheet 8 may also be hydrophilic.
[0016] On both sides of the width direction of the absorbent pad 1, a pair of leak-proof side sheets 9L and 9R are provided. The side sheets 9L and 9R are made of a nonwoven fabric that is breathable but not water-permeable. The side sheets 9L and 9R are bonded to other sheets on their outer widthwise sides, but their inner widthwise ends are free ends that are not bonded to other sheets. Elastic threads are arranged parallel to the longitudinal direction at the free ends. When worn, the biasing force of these elastic threads causes the free ends to rise towards the skin side, functioning as three-dimensional gathers 3L and 3R, which are leak-proof sections that prevent lateral leakage of waste. In this way, the side sheets 9L and 9R protect the outer widthwise side of the absorbent pad 1 on the skin side, and the three-dimensional gathers 3L and 3R prevent lateral leakage of waste.
[0017] In the areas of the outer circumference of the absorbent pad 1 where the absorbent material 6 does not extend, each sheet covering the absorbent material 6 is bonded with a hot-melt adhesive or the like. By bonding each sheet to the outside of the outer circumference of the absorbent material 6, it is possible to prevent the inflow of bodily fluids from the unbonded areas and to maintain a constant position for the absorbent material 6.
[0018] Figure 2 is a plan view of the absorbent pad according to the embodiment. The cover sheet 4, the back sheet 5, the absorber 6, and the top sheet 8 all extend from the front body region 1F to the back body region 1R. Therefore, when the crotch of the wearer is covered with the cover sheet 4 in which the back sheet 5, the absorber 6, and the top sheet 8 are laminated, both longitudinal ends of the back sheet 5, the absorber 6, and the top sheet 8 are in a state of being located on the ventral side and the dorsal side of the wearer.
[0019] As described above, since the side sheets 9L and 9R adhere closely to the skin as three-dimensional gathers 3L and 3R, the excretions contacting the side sheets 9L and 9R do not leak any further in the width direction of the absorbent pad 1, and the moisture contained in the excretions is sequentially absorbed by the absorber 6. The top sheet 8 has a good texture and is a hydrophilic non-woven fabric. It contacts the skin to directly receive body fluids and plays a role of sequentially absorbing them into the absorber 6. Also, it prevents the backflow of the discharged liquid already absorbed by the absorber 6.
[0020] The absorber 6 has a structure in which granular absorbent resins (high molecular water absorbents) such as SAP (Super Absorbent Polymer), which are hydrophilic polymers having a cross-linked structure capable of absorbing and holding water, are held in the gaps between short fibers of cellulosic fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers obtained by subjecting synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate to a hydrophilization treatment. In the present embodiment, the absorber 6 has a two-layer structure of a wide and substantially ladle-shaped upper absorber and a rectangular lower absorber.
[0021] The SAP particles in the present embodiment refer to those in which a resin composition containing SAP is formed into granules. The "resin composition containing SAP" mentioned here is a concept encompassing both a composition consisting only of SAP and a composition having SAP as the main component and containing other substances to such an extent that it does not adversely affect water absorption. Examples of the "other substances" include additives (such as surface modifiers added for the purpose of hydrophobizing the particle surface) and unreacted monomers remaining during the synthesis of SAP.
[0022] Although not shown in Figure 2, the absorbent material 6 is covered with a permeable core wrap sheet 7 made of pulp fibers or nonwoven fabric. The core wrap sheet 7 prevents the absorbent material 6 from losing its shape and prevents the SAP particles contained in the absorbent material 6 from scattering to other structures.
[0023] When the wearer is lying on their back or stomach, the discharge spreads evenly between the body surface and the top sheet 8 and is gradually absorbed by the absorbent material 6. However, when the wearer is lying on their side, the discharge may flow to one side in the width direction before the absorbent material 6 has completely absorbed it, increasing the importance of the three-dimensional gathers 3L and 3R that catch the discharge and prevent lateral leakage.
[0024] The 3L and 3R three-dimensional gathers are finished with hot melt adhesive at both ends in the width direction. It is bonded and connected to the sheet 8. The three-dimensional gathers 3L and 3R rise from the upright lines 3LL and 3LR provided near the widthwise ends of the lower absorbent extension region, with their widthwise inner ends being free ends. Near the free ends, which are the widthwise inner ends of the three-dimensional gathers 3L and 3R, elastic shrinkage members, namely thread rubber 3BL and 3BR, are provided, and these thread rubber 3BL and 3BR extend parallel to the longitudinal direction.
[0025] At the longitudinal ends of the absorbent pad 1, the three-dimensional gathers 3L and 3R are bonded to the top sheet 8 by hot melt adhesive or heat welding, forming a fixed portion 3E. When the elastic threads 3BL and 3BR exert their contractile force and the three-dimensional gathers 3L and 3R rise along the wearer's skin, the fixed portions 3E at both longitudinal ends become the starting points of contraction. The contractile force of the elastic threads 3BL and 3BR is then transmitted to both longitudinal ends of the absorbent pad 1, raising the front body region 1F and the back body region 1R towards the skin. As a result, the absorbent pad 1 can conform more easily to the wearer's skin.
[0026] A high-rigidity section 3HL is provided between the elastic thread 3BL and the upright line 3LL, formed by welding a three-dimensional gather 3L to it. A similar high-rigidity section 3HR is also provided between the elastic thread 3BR and the upright line 3LR. Because the three-dimensional gathers 3L and 3R are welded to these high-rigidity sections 3HL and 3HR, displacement of the elastic threads 3BL and 3BR is suppressed. Therefore, when the absorbent pad 1 is worn, the elastic threads 3BL and 3BR exert appropriate biasing force, properly raising the three-dimensional gathers 3L and 3R and bringing them into contact with the wearer's skin. The three-dimensional gathers 3L and 3R do not have high rigidity because they are not bonded to other sheets, but in the high-rigidity sections 3HL and 3HR, the upright side sheets 9L and 9R and the side sheets 9L and 9R that are folded back at the free ends are welded together in a double layer, making them more rigid than other parts of the three-dimensional gathers 3L and 3R.
[0027] Figure 3 is a cross-sectional view of the absorbent pad when the central part is cut along the width direction. In this embodiment, the absorbent body 6 has an upper absorbent mat 6a and a lower absorbent mat 6b. The upper absorbent mat 6a is wider than the lower absorbent mat 6b in its entire extended area, and when observed from the skin side, the lower absorbent mat 6b fits inside the upper absorbent mat 6a in the width direction. An SAP region 6s, in which SAP particles are arranged, is provided between the upper absorbent mat 6a and the lower absorbent mat 6b. The upper absorbent mat 6a has a roughly gourd-shaped outer form and extends to the outside in the width direction of the vertical lines 3LL and 3RL in the front body region 1F and back body region 1R. Therefore, in the front body region 1F and back body region 1R, the upper absorbent mat 6a extends to the outside in the width direction of the three-dimensional gathers 3L and 3R. On the other hand, in the crotch area 1B, the upper absorbent mat 6a is constricted in the width direction, and its end is contained within the upright lines 3LL and 3LR of the three-dimensional gathers 3L and 3R.
[0028] The width of the area sandwiched between the three-dimensional gathers 3L and 3R and the upright lines 3LL and 3LR is narrower than the width of the lower absorbent mat 6b. Therefore, in the area on the inside of the three-dimensional gathers 3L and 3R in the width direction that comes into contact with the wearer's skin, the absorbent body 6 has multiple absorbent mats.
[0029] The absorbent body 6 is covered with a core wrap sheet 7. The core wrap sheet 7 is a thin, water-permeable sheet, and one example is a sheet made of pulp fibers such as tissue paper. By covering the absorbent body 6 with the core wrap sheet 7 and bonding each absorbent mat constituting the absorbent body 6 with an adhesive such as hot melt, deformation of the absorbent body 6 can be suppressed even when the absorbent body 6 is composed of multiple absorbent mats, as in this embodiment.
[0030] In this embodiment, the core wrap sheet 7 has an upper core wrap sheet 7a and a lower core wrap sheet 7b. The upper core wrap sheet 7a covers the skin-facing side of the absorbent 6. The lower core wrap sheet 7b covers the non-skin-facing side and the side portion of the absorbent 6. Its edge overlaps with the skin-facing side of the widthwise edge of the upper absorbent mat 6a.
[0031] Side sheets 9L and 9R rise from the area corresponding to the widthwise edge of the lower absorbent mat 6b and are bonded to the top sheet 8 with hot melt adhesive HM or the like. The widthwise inner edges of the upright lines 3LL and 3LR of side sheets 9L and 9R are not restricted and are free ends. Elastic threads 3BL and 3BR are provided at the widthwise inner edges of the free ends. When the absorbent pad 1 is worn, the widthwise inner free ends of side sheets 9L and 9R rise due to the biasing force of the elastic threads 3BL and 3BR, functioning as three-dimensional gathers 3L and 3R.
[0032] The side sheets 9L and 9R are folded back at the free ends where the elastic threads 3BL and 3BR are located, enclosing the elastic threads 3BL and 3BR. The folded side sheets 9L and 9R are then bonded between the elastic threads 3BL and 3BR and the upright lines 3LL and 3LR by methods such as heat welding, forming high-rigidity sections 3HL and 3HR. Because the free ends and high-rigidity sections 3HL and 3HR prevent the elastic threads 3BL and 3BR from shifting, they can exert their biasing force as designed.
[0033] In this embodiment, the three-dimensional gathers 3L and 3R are bent outward in the width direction at the high-rigidity sections 3HL and 3HR. Therefore, the three-dimensional gathers 3L and 3R rise inward in the width direction of the upright lines 3LL and 3LR, bending in the region where the high-rigidity sections 3HL and 3HR exist as a bent portion, and rising with their free ends facing outward in the width direction. As a result, the area between the high-rigidity sections 3HL and 3HR and the free ends of the three-dimensional gathers 3L and 3R is more likely to come into contact with the wearer's skin as a surface. When the ends of the three-dimensional gathers 3L and 3R come into contact with the wearer's skin as a surface, the contact with the skin is softer compared to when the three-dimensional gathers 3L and 3R simply rise in one direction and come into contact with the wearer's skin as a line. Furthermore, lateral leakage of waste can be suppressed more effectively. In this embodiment, no shrinkage member is attached near the bent portion, and the three-dimensional gathers 3L and 3R rise and perform their function due to the shrinkage force of the elastic threads 3BL and 3BR present on the free end side.
[0034] More preferably, the bent portion should coincide with the widthwise end of the high-rigidity sections 3HL and 3HR. When the bent portion coincides with the widthwise end of the high-rigidity sections 3HL and 3HR, the three-dimensional gathers 3L and 3R will bend more easily as the ends of the high-rigidity sections 3HL and 3HR become fold lines. Also, even if a flexible nonwoven fabric is used as the material to improve the feel against the skin of the side sheets 9L and 9R, fold lines are more likely to form if the widthwise end of the high-rigidity sections 3HL and 3HR is used.
[0035] Next, we will describe how to form the three-dimensional gathers 3L and 3R of this shape. Absorbent items such as absorbent pad 1 are folded, compressed, and packaged in the factory. Folding and packaging reduces the bulk of absorbent items such as absorbent pad 1 during distribution, improving handling during distribution.
[0036] Figure 4 shows the absorbent pad according to the embodiment folded in the width direction. The absorbent pad 1 bends inward in the width direction along a pair of fold lines extending in the longitudinal direction, and is folded in a so-called double-fold shape as shown in Figure 4. The pair of fold lines are formed near the high-rigidity sections 3HL and 3HR provided in the three-dimensional gathers 3L and 3R. Therefore, the upright lines 3LL and 3LR sides of the three-dimensional gathers 3L and 3R bend towards the skin side along the pair of fold lines, with the high-rigidity sections 3HL and 3HR acting as the bending points.
[0037] The absorbent pad 1 shown in Figure 4 is further folded before being placed in the package. In Figure 4, the fold lines 10F and 10R, which are made when the absorbent pad 1, which is bent in the longitudinal direction, is folded and placed in the package, are shown as dashed lines.
[0038] Figure 5 shows the absorbent pad according to the embodiment folded in the longitudinal direction. When stored in the package, the absorbent pad 1, which is folded inward in the width direction as shown in Figure 4, is further folded in three along the fold lines 10F and 10R in the longitudinal direction in the direction of the arrows, so that the back body region 1R and the front body region 1F overlap the skin side of the crotch region 1B. In this state, the cover sheet 4 is exposed on the entire outer surface of the absorbent pad 1. Therefore, consumers can grasp and handle the absorbent pad 1 at any point without touching the relatively delicate absorbent material 6 side relative to the cover sheet 4.
[0039] Figure 6 shows the packaging state of the absorbent pad according to the embodiment. The absorbent pad 1, folded as shown in Figure 5, is stacked with other absorbent pads 1 to form a stack, and is stored in a compressed state in the package 20, which is the packaging body. The stack may be one layer or multiple layers as shown in Figure 6. By stacking and compressing the absorbent pads in this way and sealing them in the package 20, the absorbent pads 1 become easier to distribute. The package 20 may be made of a resin film, paper, nonwoven fabric, or the like.
[0040] When folded in this manner, a bending habit in the opposite direction is applied to the high-rigidity sections 3HL and 3HR of the three-dimensional gathers 3L and 3R of the absorbent pad 1. Since the high-rigidity sections 3HL and 3HR are more rigid than other parts of the three-dimensional gathers 3L and 3R, the bending habit is more likely to become fixed there. Furthermore, as the folded absorbent pad 1 is compressed in the thickness direction, pressure is applied to the bending habit, and the bending habit becomes fixed in the high-rigidity sections 3HL and 3HR. Note that compression does not necessarily have to be performed with the absorbent pad 1 completely folded as shown in Figure 5, but may also be performed in the state shown in Figure 4, where the outer side in the width direction of the absorbent pad 1 is bent inward in the width direction along a folding line provided parallel to the longitudinal direction. Compression may be performed twice, once in the state shown in Figure 4 and again in the state shown in Figure 5.
[0041] Before use, when the wearer or caregiver unfolds the folded absorbent pad 1, the upright lines 3LL and 3LR of the three-dimensional gathers 3L and 3R unfold outward in the width direction, and the three-dimensional gathers 3L and 3R rise inward in the width direction towards the elastic threads 3BL and 3BR located at the free ends. However, the high-rigidity sections 3HL and 3HR between the upright lines 3LL and 3LR and the free ends have a fixed bending habit due to bending and compression in the flow state as shown in Figures 4 to 6. As a result, the three-dimensional gathers 3L and 3R change direction at the high-rigidity sections 3HL and 3HR, and the free ends to which the elastic threads 3BL and 3BR are attached rise outward in the width direction.
[0042] In this embodiment, the absorbent pad 1 has a section between the high-rigidity parts 3HL and 3HR and the free end that rises outward in the width direction. Therefore, the area between the upright lines 3LL and 3LR of the three-dimensional gathers 3L and 3R and the high-rigidity parts 3HL and 3HR rises inward in the width direction. Also, the area between the high-rigidity parts 3HL and 3HR and the free end rises outward in the width direction and comes into contact with the wearer's skin.
[0043] Due to these features, the three-dimensional gathers 3L and 3R of the absorbent pad 1 in this embodiment can block highly fluid excretions such as urine between the upright lines 3LL and 3LR that rise inward in the width direction and the high-rigidity parts 3HL and 3HR, allowing them to be quickly absorbed by the absorbent material 6. Furthermore, because the area between the high-rigidity parts 3HL and 3HR and the elastic threads 3BL and 3BR is in contact with the wearer's skin, excretions such as feces can be quickly absorbed. solid It suppresses the outflow of waste products containing a large amount of body components in the width direction.
[0044] In the absorbent pad 1 according to this embodiment, there is no need to fold the three-dimensional gathers 3L and 3R during the manufacturing process, nor is it necessary to add special elastic threads at the expected bending positions. In the absorbent pad 1 according to this embodiment, high-rigidity sections 3HL and 3HR are provided at appropriate positions on the three-dimensional gathers 3L and 3R, and when bending to a shape suitable for distribution, the high-rigidity sections 3HL and 3HR are provided. It is possible to form a kinks at the appropriate bending position and fix them through compression.
[0045] The bending crease added to the three-dimensional gathers 3L and 3R is maintained even when worn. Therefore, the absorbent pad 1 according to this embodiment can provide three-dimensional gathers 3L and 3R that are effective against various forms of waste without employing a costly manufacturing configuration.
[0046] The features of the present invention have been described above in terms of embodiments, but the content of the present invention is not limited to the above embodiments. For example, it is possible to create a bending habit in the three-dimensional gathers 3L and 3R of the absorbent pad 1 by applying an appropriate bending treatment during the manufacturing process or by adding elastic threads at the expected bending positions. Then, when folding the absorbent pad 1 for distribution, selecting an appropriate folding position and further compressing it will fix the bending habit, thereby exhibiting a synergistic effect and providing an absorbent pad 1 with three-dimensional gathers 3L and 3R that exhibit a more stable lateral leakage prevention effect for various forms of waste. [Explanation of symbols]
[0047] 1. Absorbent pad 1B...Inseam area 1F ··Front bodice area 1R · Back panel area 3BL, 3BR... elastic thread 3HL,3HR·High rigidity part 3L, 3R... 3D Gathered 3LL,3LR･･･Rise line 4. Cover Sheet 5. Back seat 6. Absorbent 7. Core Wrap Sheet 8. Top sheet 9L, 9R... Side seats 20 packages
Claims
1. An absorbent article comprising a front body region facing the wearer's abdomen, a back body region facing the wearer's back, and a crotch region located between the front and back body regions where an absorbent material is placed, all connected together, The absorbent body, A water-permeable skin-side sheet provided on the skin-side of the absorbent, A pair of non-permeable leak-proof sheets are provided on both sides in the width direction of the skin-side sheet and extend in the longitudinal direction, Equipped with, On the inner side in the width direction of the aforementioned leak-proof sheet, there is a leak-proof portion that is connected to the skin-side sheet on the outer side in the width direction, has a free end on the inner end in the width direction, and is provided near the inner end in the width direction, and stands upright on the skin-side due to the contraction force of a contraction member that extends in the longitudinal direction. The longitudinal end of the leak-proof portion is bonded to the skin-side sheet to form a fixed portion. The free end of the aforementioned leak-proof portion is bent outward in the width direction. The bent portion of the leak-proof section is provided with a high-rigidity section that is more rigid than the other parts forming the leak-proof section. The high-rigidity portion is formed by folding the leak-proof sheet back at the free end, and the folded portion of the leak-proof sheet being bonded to the leak-proof sheet up to the bent portion. Absorbent material.
2. The outward bending in the width direction on the free end side of the leak-proof portion is formed by the folding of both sides of the absorbent article in the width direction parallel to the longitudinal direction. The absorbent article according to claim 1.
3. The widthwise end of the high-rigidity portion is arranged along the bent portion. The absorbent article according to claim 1 or 2.
4. The leak-proof portion rises outward in the width direction between the high-rigidity portion and the free end, and the side of the skin-side sheet rises inward from the width-direction inner end of the high-rigidity portion. 、 The absorbent article according to claim 3.
5. The shrinking member is attached near the free end. The shrinking member is not attached near the bent portion of the leak-proof section. The absorbent article according to claim 1 or 2.
6. It is folded inward in the longitudinal direction at a folding position that extends in the width direction, and compressed in the thickness direction. The absorbent article according to claim 2.
7. At the folding position that extends parallel to the longitudinal direction, it folds inward in the width direction and bends, Furthermore, at the folding position that extends parallel to the width direction, it folds inward in the longitudinal direction and bends, It is enclosed in the packaging that contains the absorbent material. The absorbent article according to claim 1.