Absorbent article

Abstract

To provide an absorbent article that is easy to wear.SOLUTION: An absorbent article includes: a length along a longitudinal direction corresponding to a front-back direction of a wearer; a length along a width direction orthogonal to the longitudinal direction; a front body region located on a front side of the wearer in the front-back direction; a back body region located on a back side of the wearer in the front-back direction; a crotch region whose width is narrower than the front body region and the back body region, in a part between the front body region and the back body region; and an absorbent core for absorbing urine, provided at a center in the width direction of the front-side end and having a cutout part cut out toward the back side.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

[0002] Absorbent articles such as disposable diapers, absorbent pads, and sanitary products have been developed (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-140559 Summary of the Invention [Problem to be solved by the invention]

[0004] Absorbent articles are folded when distributed. Therefore, when putting on an absorbent article, it is necessary to unfold the folded absorbent article. However, the edges of the folded absorbent article are in close contact with the exterior surface of the absorbent article, making it difficult for fingers to catch and for the article to be unfolded, which can make putting on an absorbent article time-consuming.

[0005] An object of the present invention is to provide an absorbent article that is easy to put on. [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; a front body region located in front of the wearer in the front-to-back direction, a back body region located behind the wearer, and a crotch region between the front body region and the back body region, the crotch region having a length in the width direction narrower than the front body region and the back body region; The absorbent core has a notch provided at the center of the front end in the width direction and cut out toward the rear, and is configured to absorb urine. [Effects of the Invention]

[0007] According to the present invention, the installation work can be facilitated. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of the appearance of an absorbent pad according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the absorbent pad according to the embodiment. [Figure 3] FIG. 3 is a plan view of the absorbent pad according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of an absorbent pad according to an embodiment. [Figure 5] FIG. 5 is a plan view showing a restricting portion that restricts displacement of the absorbent pad according to the embodiment. [Figure 6] FIG. 6 is a diagram showing an example of folding the absorbent pad according to the embodiment. [Figure 7] FIG. 7 is a plan view of an absorbent pad according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following describes an embodiment of the present invention. The embodiment described below is one aspect of the present invention and does not limit the technical scope of the present invention.

[0010] <Embodiment> In this embodiment, the longitudinal direction of a disposable absorbent pad (an example of an "absorbent article" in this application) is the direction connecting the front body portion facing the wearer's abdomen and the back body portion facing the back. A crotch section, which is positioned between the front body portion (one side in the longitudinal direction) and the back body portion (the other side in the longitudinal direction) (at the center in the longitudinal direction) and is located adjacent to the wearer's crotch area (facing the crotch area). When the absorbent pad is worn on a wearer (hereinafter referred to as the "worn state"), the side facing the wearer's skin (the inner side in the worn state) is the skin-facing side, and the side opposite the skin-facing side (the outer side in the worn state) is the non-skin-facing side. The thickness direction is the direction connecting the skin-facing side and the non-skin-facing side, and the width direction is the direction perpendicular to both the longitudinal and thickness directions. A view from the thickness direction is a planar view. The absorbent pad has a length along the longitudinal direction, which corresponds to the front-to-back direction of the wearer, and a length along the width direction, which is perpendicular to the longitudinal direction. Furthermore, terms relating to directions used in this application refer to directions that correspond to the front, back, left, and right of the wearer when the absorbent pad is worn on the wearer. For example, the front-to-back direction in this application means the direction that corresponds to the front and back of the wearer when the absorbent pad is worn on the wearer, and the left-to-right direction in this application means the direction that corresponds to the left and right of the wearer when the absorbent pad is worn on the wearer.

[0011] 1 is a perspective view of an absorbent pad 1 according to an embodiment. The absorbent pad 1 is used to absorb and retain liquids such as urine, and can be used alone by placing it on the skin-facing side of underwear, or can be used layered inside a disposable diaper. The absorbent pad 1 has a crotch region 1B corresponding to the crotch area that covers the wearer's genitals when worn, a front body region 1F located in front of the crotch region 1B and corresponding to the front side of the wearer, and a back body region 1R located behind the crotch region 1B and corresponding to the back side of the wearer.

[0012] The absorbent pad 1 has an absorbent body 6, which can absorb and retain liquid, arranged mainly around the crotch region 1B. The absorbent pad 1 also has three-dimensional gathers 3L, 3R (an example of a "leak-proof wall" as referred to in this application) arranged mainly around the crotch region 1B of the wearer to prevent the formation of gaps between the absorbent pad 1 and the wearer's skin that could serve as a liquid leakage path. The three-dimensional gathers 3L, 3R adhere closely to the wearer's skin due to the elastic force of the elastic members. Therefore, liquid excreted by the wearer is absorbed by the absorbent body 6 without leaking from the absorbent pad 1. The elastic members can be selected from thread-like or strip-like rubber, etc., as appropriate.

[0013] FIG. 2 is an exploded perspective view of the absorbent pad 1 according to the embodiment. FIG. 3 is a plan view of the absorbent pad 1 according to the embodiment when stretched and viewed from the skin-facing side. FIG. 4 is a cross-sectional view of the absorbent pad 1 according to the embodiment taken along line AA in FIG. 3. In the cross-sectional views shown below, each component is illustrated thicker than it actually is to facilitate understanding of the internal structure of the absorbent pad 1. However, the absorbent pad 1 is actually very thin. As shown in FIG. 3, the front body region 1F is a wide region at the front side of the absorbent pad 1, and the back body region 1R is a wide region at the back side of the absorbent pad 1. The crotch region 1B is narrower than the front body region 1F and the back body region 1R. The center of the crotch region 1B (an example of the "crotch region center" in this application) is located at the center of the narrowest region of the absorber 6 in the longitudinal and width directions, and is located 145 mm forward from the rear end of the upper-layer absorbent mat 6A (described later). If the distance from the center of the crotch region 1B to the rear end of the upper absorbent mat 6A is 145 mm, when the absorbent pad 1 is worn by aligning the wearer's crotch area with the crotch region 1B, the widthwise outer end of the rear end of the absorbent pad 1 can be worn so that it is aligned with the wearer's ilium.

[0014] In the absorbent pad 1 according to this embodiment, the front body region 1F and the back body region 1R are wider than the crotch region 1B in a plan view, and the crotch region 1B has a narrowed shape. Both longitudinal ends of the absorbent pad 1 are formed in a curved shape, and the front end of the front body region 1F is The central portion has an arc-shaped cutout toward the crotch region 1B, and the rear end of the back body region 1R has a shape in which the widthwise central portion protrudes outward in an arc-shaped manner in the longitudinal direction. Furthermore, at both longitudinal ends of the absorbent pad 1, the widthwise outer ends have an arc-shaped cutout toward the crotch region 1B. The narrowed region in the crotch region 1B has a shape in which multiple arcs (e.g., three arcs in this embodiment) extending outward in the width direction are connected. This planar shape allows the absorbent pad 1 to easily fit the wearer's abdomen and buttocks when worn.

[0015] The front end of the front body region 1F is approximately parallel to the front end of the absorbent core 6C (described later). By aligning the front end of the front body region 1F approximately parallel to the front end of the absorbent core 6C formed along the wearer's abdomen, no gap is formed between the front body region 1F and the skin, thereby preventing urine leakage.

[0016] The absorbent pad 1 includes a top sheet 8 (an example of the "water-permeable sheet" referred to in this application) that is disposed on the skin-facing side when the absorbent pad 1 is worn. The top sheet 8 is the portion that contacts the wearer's skin when the absorbent pad 1 is worn, and is a water-permeable sheet made of a liquid-permeable material that allows liquids such as urine to pass through. The top sheet 8 may be made of a woven fabric, a nonwoven fabric, a porous film, or the like. The nonwoven fabric may be made of thermoplastic resin fibers such as polypropylene, polyethylene, polyester, or nylon that have been hydrophilized, or may be an air-through nonwoven fabric, a point-bonded nonwoven fabric, a spun-bonded nonwoven fabric, or a melt-blown nonwoven fabric.

[0017] The absorbent pad 1 comprises an absorbent body 6, a back sheet 5, and a cover sheet 4, which are laminated in this order on the non-skin facing side of the top sheet 8.

[0018] The absorbent body 6 absorbs and retains liquids such as urine. The absorbent body 6 is disposed on the non-skin-facing side of the top sheet 8, including the crotch region 1B, to absorb liquids excreted by the wearer. A hot melt adhesive HM is applied to the skin-facing side of the absorbent body 6 in multiple rows of stripes spaced apart in the width direction, and this hot melt adhesive HM bonds the absorbent body 6 to the top sheet 8. In this embodiment, the absorbent body 6 has an absorbent core 6C containing an absorbent material and a core wrap sheet 7 that wraps the top and bottom of the absorbent core 6C. The longitudinal direction of the absorbent body 6 coincides with the longitudinal directions of the absorbent core 6C and core wrap sheet 7 and the absorbent pad 1.

[0019] The absorbent core 6C has a structure in which granular absorbent resin (polymeric water-absorbing material) such as SAP (Super Absorbent Polymer), a hydrophilic polymer with a cross-linked structure that can absorb and retain water, is held in the gaps between short fibers of cellulosic fibers such as pulp, rayon, or cotton, or short fibers made from synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been hydrophilically treated. These short fibers and SAP are examples of absorbent materials.

[0020] In this embodiment, SAP particles refer to a resin composition containing SAP in a granular form. The term "SAP-containing resin composition" as used herein encompasses both compositions consisting solely of SAP and compositions containing SAP as the primary component, with other substances added to the extent that they do not adversely affect water absorption. Examples of "other substances" include additives such as surface modifiers added to hydrophobize the particle surface, and unreacted monomers remaining during the synthesis of SAP. SAP particles can absorb approximately 10 to 100 times their own weight in liquid. The SAP particles may be, for example, granular particles with a diameter of approximately 0.1 to 0.5 mm before absorbing liquid.

[0021] Although SAP particles can gel and retain liquid, it takes a certain amount of time to absorb the liquid. The short fibers of the absorbent pad 1 do not slow down the discharged liquid until the SAP particles have absorbed the liquid. However, the liquid is diffused inside the absorbent core 6C, and the discharged liquid is absorbed by a wide range of SAP particles, preventing the liquid from flowing back.

[0022] The absorbent core 6C has an upper absorbent mat 6A arranged on the top sheet 8 side and a lower absorbent mat 6B arranged on the non-skin-facing side. The absorbent core 6C has a structure in which two mats, the upper absorbent mat 6A and the lower absorbent mat 6B, are stacked together. The upper absorbent mat 6A and the lower absorbent mat 6B are made of the above-mentioned short fibers. In this embodiment, SAP is mixed into the upper absorbent mat 6A and the lower absorbent mat 6B.

[0023] Alternatively, the SAP particles may be unevenly distributed in either the upper absorbent mat 6A or the lower absorbent mat 6B. For example, the SAP particles may be distributed only in the upper absorbent mat 6A, but not in the lower absorbent mat 6B. In this case, the lower absorbent mat 6B is made of short fibers only, and serves to retain and diffuse the discharged liquid and prevent it from flowing back in until it is absorbed by the SAP particles contained in the upper absorbent mat 6A.

[0024] The absorbent core 6C may also have an SAP layer (not shown) formed of a large number of SAP particles, which is disposed between the upper absorbent mat 6A and the lower absorbent mat 6B. The absorbent core 6C diffuses liquids such as urine through the lower absorbent mat 6B, and retains the liquid through the SAP layer and the SAP contained in the upper absorbent mat 6A.

[0025] When the absorbent pad 1 is viewed from above, the upper-layer absorbent mat 6A extends in the longitudinal direction of the absorbent pad 1, with its front end located 121 mm from the center of the crotch region 1B. The front body region 1F side of the upper-layer absorbent mat 6A is wider than the crotch region 1B and has a generally elliptical shape with its major axis extending in the width direction of the absorbent pad 1. The rear body region 1R side of the upper-layer absorbent mat 6A is wider than the crotch region 1B and has a generally triangular shape with the widthwise center of its outer longitudinal end located at the rear. The upper-layer absorbent mat 6A does not reach the rear end of the absorbent core 6 and is formed short within the absorbent core 6 when viewed in the longitudinal direction of the absorbent pad 1.

[0026] Furthermore, when the absorbent pad 1 is viewed from above, the area of the skin-facing side of the upper-layer absorbent mat 6A is preferably smaller than that of the non-skin-facing side, and the outer edge of the upper-layer absorbent mat 6A is preferably inclined from the non-skin-facing side toward the skin-facing side. This shape prevents acute angles from being formed on the skin-facing side of the upper-layer absorbent mat 6A, improving the feel against the skin when worn.

[0027] The lower absorbent mat 6B is disposed on the non-skin-facing side of the upper absorbent mat 6A when viewed from the top sheet 8 side, and has substantially the same planar shape as the absorbent pad 1. The upper absorbent mat 6A and the lower absorbent mat 6B are stacked in the thickness direction so that their respective widthwise centers are substantially aligned. In addition, in a planar view, the lower absorbent mat 6B is formed to be larger than the upper absorbent mat 6A. The longitudinal direction of the absorbent body 6 coincides with the longitudinal directions of the upper and lower absorbent mats 6A and 6B and the absorbent pad 1.

[0028] The lower absorbent mat 6B has both longitudinal ends with an arc-shaped cutout at the widthwise outer end toward the center of the crotch region 1B. The widthwise outer end of the longitudinal rear end of the lower absorbent mat 6B is the position where the wearer's ilium protrudes when worn. Therefore, by cutting out the rear end of the lower absorbent mat 6B in a roughly arc-shaped shape, it conforms to the wearer's ilium when worn, preventing the absorbent core 6C from overlapping and compressing the ilium.

[0029] The lower absorbent mat 6B has a longitudinal rear end portion, and both widthwise outer ends thereof have an arc shape cut out toward the center of the crotch region 1B. The absorbent mat 6B has an absorbent core non-extending region 11 at both widthwise outer ends of the longitudinal rear end. The absorbent core non-extending region 11 extends from 45 mm to 120 mm from the rear end of the absorbent pad 1. The boundary between the absorbent core non-extending region 11 and the absorbent core 6C is the rear end of the lower absorbent mat 6B and is curved. Because the boundary between the absorbent core non-extending region 11 and the absorbent core 6C is curved, the absorbent pad 1 does not have corners where the angle changes suddenly, like a square wave. Corners where the angle changes suddenly tend to become base points for the absorbent pad 1 to bend along linear edges. Therefore, the absorbent pad 1 prevents bending at corners where the angle changes suddenly, thereby preventing pressure against the wearer's skin and bedsores. Furthermore, when worn, the absorbent core non-extending region 11 corresponds to the position where the wearer's ilium protrudes. Therefore, pressure on the ilium by the absorbent core 6C can be suppressed, and bedsores can be prevented.

[0030] The lower absorbent mat 6B has cutouts 12 at both longitudinal ends, with the widthwise center cut out toward the crotch region 1B. By providing the cutouts 12 in the absorbent pad 1, any creases that occur during the putting-on process can be adjusted by moving the cutouts 12 in the width direction, and the rear end of the absorbent core 6C can be put on so that it is aligned with the ilium.

[0031] In the front body region 1F, the cutout 12 extends within 50 mm from the widthwise center of the rear end of the cutout 12, the distance from the center of the crotch region 1B to the widthwise center of the rear end of the cutout 12 is 125 mm to 136 mm, and the distance to the widthwise outer end of the cutout 12 is 110 mm. The distance from the center of the crotch region 1B to the front end of the lower absorbent mat 6B continuously increases from the cutout 12 to the widthwise outer side, and the distance to the front end located foremost in the lower absorbent mat 6B is 175 mm to 186 mm.

[0032] The absorbent pad 1 includes grooves 6L, 6H, and 6R in the absorbent core 6C that penetrate the absorbent core 6C in the thickness direction. The groove 6H is located within the longitudinal length of the absorbent core 6C, and its front-to-rear ends are contained within the absorbent core 6C. The groove 6H is located in the widthwise center of the absorbent core 6C so as to extend longitudinally. In this embodiment, the groove 6H penetrates the absorbent core 6C, which is formed from the upper-layer absorbent mat 6A and the lower-layer absorbent mat 6B, at a position corresponding to the wearer's midline when worn. Excreted liquid, such as urine, flows into the grooves 6H, moves longitudinally along the grooves 6H, and is rapidly absorbed over a wide area in the longitudinal direction of the absorbent body 6. Therefore, the absorbent pad 1 according to this embodiment includes the grooves 6H, allowing for rapid diffusion of excreted liquid. Furthermore, as shown in FIG. 3, the grooves 6H do not reach the longitudinal ends of the absorbent body 6. Therefore, the discharged liquid that has moved outward in the longitudinal direction does not reach the longitudinal ends of the absorbent body 6, but remains inside the grooves 6H and is gradually absorbed. The grooves 6H may be formed so that the skin-facing side is concave by making the absorbent material, such as short fibers, that forms the absorbent core 6C less than in parts other than the grooves 6H, or may be formed by squeezing the absorbent material that forms the skin-facing side of the absorbent core 6C in the thickness direction.

[0033] As shown in FIG. 3, in a plan view, the groove 6H has a rectangular shape with both front and rear ends formed in an arc. The front end of the groove 6H is located midway through the crotch region 1B, and the rear end of the groove 6H is located at the front of the back body region 1R. The groove 6H has a certain width. For example, the width is 7 mm or more and 25 mm or less. The length of the groove 6H is 110 mm or more and 150 mm or less. An absorbent pad 1 having a groove 6H of this size is suitable for adults (for nursing care). The groove 6H may be formed in a polygonal or elliptical shape instead of a rectangular shape in a plan view.

[0034] The groove 6H is formed by a groove 6AH formed through the upper absorbent mat 6A and a groove 6AH formed through the lower absorbent mat 6 The absorbent pad 1 has a groove 6BH formed through the absorbent pad 1B. The grooves 6AH and 6BH have the same shape. The grooves 6BH are formed longer in the longitudinal direction of the absorbent pad 1 than the grooves 6AH. By shortening the grooves 6AH, the amount of urine absorbed by the upper-layer absorbent mat 6A in the crotch region 1B can be increased. Furthermore, the grooves 6BH are formed so that their front ends are aligned in the longitudinal direction with the front ends of the regions of the grooves 6L and 6R that are formed parallel to the longitudinal direction of the grooves 6H. By forming the grooves 6BH as described above, when the front end of the absorbent pad 1 is lifted to put on the wearer, the absorbent pad 1 is easily bent on an imaginary line connecting the front ends of the grooves 6BH and the front ends of the regions of the grooves 6L and 6R that are linear in the longitudinal direction, making it easier to put on the absorbent pad 1 by aligning the wearer's crotch region with the crotch region 1B.

[0035] The grooves 6L and 6R are located within the longitudinal length of the absorbent core 6C, with their front-to-rear ends contained within the absorbent core 6C. The grooves 6L and 6R are located widthwise outside of the groove 6H and penetrate the lower absorbent mat 6B. The front ends of the grooves 6L and 6R are located on the widthwise outer edges of the lower absorbent mat 6B, while the rear ends of the grooves 6L and 6R do not reach the widthwise outer edges of the lower absorbent mat 6B. The grooves 6L and 6R extend parallel to the groove 6H over a region of 143 mm from the center of the crotch region 1B. The region from 12 mm forward of the center of the crotch region 1B to the front end extends obliquely forward, and the region from 33 mm rearward of the center of the crotch region 1B to the rear end extends obliquely rearward. The groove portions 6L, 6R may be formed so that the skin-facing side is concave by making the absorbent material such as short fibers that form the absorbent core 6C less than the portions other than the groove portions 6L, 6R, or may be formed by squeezing the absorbent material that forms the skin-facing side of the absorbent core 6C in the thickness direction.

[0036] In this embodiment, the absorbent body 6 has a core wrap sheet 7. The core wrap sheet 7 is a water-permeable sheet that sandwiches the absorbent core 6C from above and below and is approximately rectangular with its long sides extending in the longitudinal direction. The core wrap sheet 7 covers the skin-facing and non-skin-facing sides of the absorbent core 6C. When not in contact with exudate, the core wrap sheet 7 protects the shape of the absorbent core 6C, preventing it from losing its shape, and prevents the SAP particles contained in the upper absorbent mat 6A and the SAP particles contained in the SAP layer from escaping. Furthermore, SAP particles in an unabsorbed state are hard, sand-like particles, and if these escaping SAP particles come into direct contact with the wearer's skin, they may cause discomfort to the wearer. For this reason, the absorbent core 6C is sandwiched between the core wrap sheets 7 to prevent the absorbent core 6C from losing its shape and to prevent the SAP particles from escaping outside the absorbent body 6.

[0037] In this embodiment, the core wrap sheet 7 is formed of two sheets: an upper-layer core wrap sheet 7A disposed between the upper-layer absorbent mat 6A and the top sheet 8, and a lower-layer core wrap sheet 7B disposed on the non-skin-facing side of the lower-layer absorbent mat 6B. The core wrap sheet 7 is made of a pulp fiber sheet, a thin nonwoven fabric, or the like. In this embodiment, a nonwoven fabric is used for the upper-layer core wrap sheet 7A, and a tissue paper is used for the lower-layer core wrap sheet 7B. Alternatively, tissue paper may be used for the upper-layer core wrap sheet 7A, and a nonwoven fabric may be used for the lower-layer core wrap sheet 7B. Alternatively, the upper-layer core wrap sheet 7A and the lower-layer core wrap sheet 7B may be made of the same material, and nonwoven fabric or tissue paper may be used for both. Alternatively, the core wrap sheet 7 may be formed of a single sheet. Alternatively, the core wrap sheet 7 may completely encase the absorbent core 6C. In this case, the core wrap sheet may be formed of a single sheet or two sheets.

[0038] As described above, the absorbent core 6C has the grooves 6L, 6H, and 6R. As shown in FIG. 4, in the grooves 6L, 6H, and 6R, the upper core wrap sheet 7A is in contact with the lower core wrap sheet 7B. The upper layer core wrap sheet 7A and the lower layer core wrap sheet 7B are bonded together on the lower layer core wrap sheet 7B with a hot melt adhesive HM. This prevents SAP particles from spilling into the grooves 6L, 6H, and 6R. The upper layer core wrap sheet 7A does not have to be recessed toward the lower layer core wrap sheet 7B in the grooves 6L, 6H, and 6R. In this case, the upper layer core wrap sheet 7A and the lower layer core wrap sheet 7B may not be bonded together. This prevents the volume of the grooves 6L, 6H, and 6R from being reduced by the volume of the upper layer core wrap sheet 7A, improving the urine diffusion ability of the grooves 6L, 6H, and 6R. The core wrap sheet 7 is also configured not to sink into the grooves 6L, 6H, and 6R. In this embodiment, an upper layer absorbent mat 6A is laminated to a portion of the skin-facing side of the grooves 6L and 6R. Furthermore, an upper absorbent mat 6A may be laminated over the entire surface of the skin-facing side of the grooves 6L and 6R.

[0039] The absorbent pad 1 includes a water-impermeable back sheet 5 (an example of the "water-impermeable sheet" referred to in this application) arranged on the non-skin-facing side of the absorbent body 6. The back sheet 5 has substantially the same planar shape as the absorbent pad 1. The back sheet 5 is a sheet formed from a thermoplastic water-impermeable resin material such as polyethylene film to suppress leakage of excreted liquid that has flowed into the absorbent body 6. The back sheet 5 has water-repellent properties to prevent urine and moisture from seeping out of the absorbent pad 1 and breathability to prevent the absorbent pad from becoming stuffy when worn. The back sheet 5 may be breathable by having many minute ventilation holes formed therein.

[0040] The absorbent pad 1 includes a cover sheet 4 disposed on the non-skin-facing side of the back sheet 5. The cover sheet 4 has substantially the same planar shape as the absorbent pad 1. The cover sheet 4 forms the exterior surface of the absorbent pad 1 and has enough rigidity to withstand friction with diapers, underwear, etc. used in combination, thereby preventing damage to the back sheet 5. The cover sheet 4 is generally made of a nonwoven fabric composed of synthetic fibers such as polypropylene, polyethylene, or polyethylene terephthalate. The cover sheet 4 is liquid-impermeable and moisture-permeable. In the absorbent pad 1, the cover sheet 4 and the back sheet 5 are formed to be the same size and shape. Furthermore, the side sheets 9L and 9R are formed to be the same shape as the cover sheet 4 and the back sheet 5 at their widthwise ends. Furthermore, the top sheet 8 is formed to be the same shape as the cover sheet 4 and the back sheet 5 at the widthwise center of the longitudinal ends of the absorbent pad 1. Therefore, the cover sheet 4, the back sheet 5, the side sheets 9L and 9R, and a portion of the top sheet 8 form the peripheral shape (outline) of the absorbent pad 1. For example, the shapes of the cover sheet 4, the back sheet 5, the side sheets 9L, 9R, and a portion of the top sheet 8 form the arc-shaped cutouts in the front body region 1F and the back body region 1R and the shape of the widthwise end of the crotch region 1B. Note that, since the back sheet 5 of the absorbent pad 1 is impermeable, the cover sheet 4 may be omitted and the back sheet 5 may form the exterior surface. As described above, the cover sheet 4, the back sheet 5, and a portion of the top sheet 8 are formed in the back body region 1R with a cutout shape corresponding to the wearer's ilium, so that the widthwise outer edge of the rear end of the absorbent pad 1 can be worn along the wearer's ilium.

[0041] A fastening tape may be provided on a portion of the exterior surface of the absorbent pad 1. In the absorbent pad 1 according to this embodiment, the cover sheet 4 forms the exterior surface. The fastening tape is an adhesive tape that prevents the absorbent pad 1 from slipping relative to the diaper, underwear, etc. that is used in combination. Alternatively, the cover sheet 4 may be formed from a material with a high coefficient of friction without providing the fastening tape, thereby suppressing slippage relative to the diaper, etc. Also, a hot melt adhesive may be applied to the non-skin-facing side of the cover sheet 4 to prevent slippage.

[0042] The absorbent pad 1 further includes a pair of water-impermeable side sheets 9L, 9R (referred to as "leak-proof" in the present application) disposed on both skin-facing sides in the width direction of the absorbent pad 1 and extending along the longitudinal direction. The side sheets 9L, 9R are arranged so that their longitudinal ends coincide with the longitudinal ends of the top sheet 8. The side sheets 9L, 9R have fixing regions 9LA, 9RA (an example of a "joint portion" as referred to in this application) arranged on the outer sides in the width direction. The fixing regions 9LA, 9RA are bonded to the top sheet 8, which is the component arranged on the non-skin-facing side, with a hot melt adhesive HM.

[0043] The side sheets 9L, 9R are bonded to the top sheet 8 with a hot melt adhesive HM. The widthwise inner ends of this hot melt adhesive HM form standing lines 3LL, 3LR (see FIG. 3), and the insides of the standing lines 3LL, 3LR form upstanding three-dimensional gathers 3L, 3R. The widthwise inner sides of the side sheets 9L, 9R from the standing lines 3LL, 3LR are the three-dimensional gathers 3L, 3R, and the widthwise inner ends of the side sheets 9L, 9R are free ends 9LB, 9RB, which are the tips of the three-dimensional gathers 3L, 3R. Two rubber threads 3BL, 3BR, which are thread-like elastic members, are provided widthwise near the free ends 9LB, 9RB of the side sheets 9L, 9R. Note that one rubber thread 3BL, 3BR may also be provided. The rubber threads 3BL, 3BR are fixed to the side sheets 9L, 9R with the hot melt adhesive HM in a stretched state in the longitudinal direction of the absorbent pad 1. The side sheets 9L, 9R have fixing portions 33L, 33R near their longitudinal ends. The fixing portions 33L, 33R fix the side sheets 9L, 9R to the top sheet 8, and serve as longitudinal starting points for the standing up of the three-dimensional gathers 3L, 3R. The side sheets 9L, 9R are also bonded to the top sheet 8 on their widthwise outer sides, but on the longitudinal inner side of the fixing portions 33L, 33R, the part inward in the widthwise direction from the hot melt adhesive HM is not bonded, allowing them to stand up toward the skin. When the elastic threads 3BL, 3BR contract, the three-dimensional gathers 3L, 3R inside the standing lines 3LL, 3LR stand up toward the skin, and the free ends 9LB, 9RB become the tips on the skin-facing side. The standing three-dimensional gathers 3L, 3R prevent liquids and loose stools from moving outward in the width direction of the three-dimensional gathers 3L, 3R, suppressing side leakage.

[0044] The fixing portions 33L, 33R are located outside the widthwise center of the rear end of the absorbent core 6C. Because the fixing portions 33L, 33R are located outside the widthwise center of the rear end of the absorbent core 6C, when the rubber threads 3BL, 3BR contract, the contraction force is transmitted widthwise outward. In addition, the back body region 1R is provided with a cutout portion 12 and an arc-shaped protruding region. The arc-shaped protruding region acts as a beam to counter the contraction force of the rubber threads 3BL, 3BR, and the cutout portion 12 tends to bulge toward the non-skin side. This makes it easier to wear the absorbent pad 1 along the ilium.

[0045] The fixing portions 33L, 33R are provided in the front body region 1F at positions overlapping the front end of the absorbent core 6C in the thickness direction. More specifically, the fixing portions 33L, 33R are provided in the front body region 1F at positions overlapping the thickness direction of the lower absorbent mat 6B having the cutout 12. By providing the fixing portions 33L, 33R so as to overlap the lower absorbent mat 6B, the front end of the lower absorbent mat 6B is pulled rearward by the contraction force of the rubber threads 3BL, 3BR during putting on the diaper, forming a cup shape with a space starting from the cutout 12.

[0046] In the front body region 1F, the rear ends of the fixed portions 33L, 33R are located further rearward than the rear ends of the cutout portions 12. The contractile force of the elastic threads 3BL, 3BR contracting is easily transmitted to the cutout portions 12, making it easy to form a cup shape.

[0047] When the absorbent pad 1 is viewed from above, the regions extending outward in the width direction of the standing lines 3LL, 3LR of the three-dimensional gathers 3L, 3R are the ear portions 10L, 10R. The ear portions 10L, 10R are composed of the side sheets 9L, 9R, the top sheet 8, the back sheet 5, and the cover sheet 4. In this embodiment, the ear portions 10L, 10R are formed by the front body region 1F and the back body region 1R. The lower absorbent mat 6B is formed in the width direction of the absorbent pad 1. The lower absorbent mat 6B is positioned so as to include the outer sides of the free ends 9LB, 9RB in the width direction. The absorbent pad 1 can increase the amount of liquid absorbed by increasing the cushioning properties of the ear portions 10L, 10R while forming the lower absorbent mat 6B large. The ear portions 10L, 10R may be formed in either the front body region 1F or the back body region 1R.

[0048] The absorbent pad 1 includes restriction portions 13, 14, 15, and 16 that prevent the absorbent pad 1 from shifting out of position relative to the wearer when the absorbent pad 1 is worn. Fig. 5 is a plan view showing the restriction portions 13, 14, 15, and 16 that prevent the absorbent pad 1 from shifting out of position. For the sake of explanation, rubber threads 3BL and 3BR are not shown in Fig. 5.

[0049] The restricting portion 13 (an example of the "first restricting portion" in this application) is disposed at the rear end of the upper-layer absorbent mat 6A and restricts longitudinal displacement of the absorbent pad 1 when worn. The restricting portion 13, located at the rear end of the upper-layer absorbent mat 6A, is located behind the center of the crotch region 1B and in front of the area that comes into contact with the wearer's buttocks when worn. Therefore, in the worn state, the upper-layer absorbent mat 6A is stacked on the lower-layer absorbent mat 6B in front of the wearer's buttocks, and has a height equivalent to the thickness of the upper-layer absorbent mat 6A. Therefore, in the worn state, the restricting portion 13 catches on the wearer's buttocks, preventing displacement of the absorbent core 6C toward the wearer's buttocks. Furthermore, because the position of the buttocks on the absorbent core 6C is restricted, the absorbent pad 1 can be easily worn in the correct position and the rear end of the absorbent core 6C is prevented from overlapping and compressing the wearer's ilium. The restricting portion 13 does not need to be restricted by the upper-layer absorbent mat 6A, and may change the coefficient of friction of the top sheet 8 to restrict displacement of the absorbent pad 1.

[0050] In the worn state, the restricting portion 14 (an example of the "second restricting portion" referred to herein) is formed 41 mm forward from the center of the crotch region 1B, conforming to the wearer's groin, and restricts the absorbent pad 1 from shifting backward. In this embodiment, the restricting portion 14 corresponds to the front end of the upper-layer absorbent mat 6A in the crotch region 1B and is curved to conform to the wearer's groin. Therefore, in the worn state, the upper-layer absorbent mat 6A is stacked on the lower-layer absorbent mat 6B in front of the wearer's groin, and the restricting portion 14 has a height equivalent to the thickness of the upper-layer absorbent mat 6A. Therefore, in the worn state, the absorbent core 6C is caught in the wearer's groin by the restricting portion 14, preventing the absorbent core 6C from shifting backward. Furthermore, because the position of the absorbent core 6C in the groin is restricted, the absorbent pad 1 can be easily worn in the correct position and the rear end of the absorbent core 6C is prevented from overlapping and compressing the wearer's ilium. The restricting portion 14 only needs to be formed along the groin area, and may be formed by compressing the upper absorbent mat 6A, or may be formed by a slit formed through the upper absorbent mat 6A.

[0051] In the worn state, the restricting portion 14 is formed so that both widthwise ends of the upper-layer absorbent mat 6A are aligned with the wearer's groin, continuously expanding diagonally outward in the widthwise direction toward the front. Therefore, in the absorbent pad 1, the upper-layer absorbent mat 6A is fitted along the wearer's groin, no gap is formed between the groin and the absorbent pad 1, and abdominal leakage, in which urine flows out of the absorbent pad 1 along the groin, can be suppressed. Furthermore, the lower-layer absorbent mat 6B extends more widely in the widthwise direction than the upper-layer absorbent mat 6A. Therefore, the gap formed between the lower-layer absorbent mat 6B, where the upper-layer absorbent mat 6A is not layered, and the wearer's skin on the front side of the crotch region 1B temporarily retains urine that has flowed toward the abdominal area. Furthermore, when worn, the lower absorbent mat 6B, which is located widthwise outside the upper absorbent mat 6A in the area that comes into contact with the wearer's groin and to which the upper absorbent mat 6A is not laminated, bends so that the skin-facing side is convex at the wearer's groin, and the skin-facing side fits closely to the inside of the wearer's leg, thereby preventing lateral leakage of urine from the widthwise outside of the absorbent pad 1.

[0052] The lower-layer absorbent mat 6B extends forward of the region that contacts the wearer's groin. When the lower-layer absorbent mat 6B extends forward of the region that contacts the wearer's groin, the upper-layer absorbent mat 6A is worn along the wearer's groin, preventing urine from leaking out of the absorbent pad 1 along the groin. In addition, because the lower-layer absorbent mat 6B is worn along the wearer's abdomen, it is possible to minimize leakage of urine from the front body region 1F.

[0053] The restricting portion 15 (an example of the "third restricting portion" referred to in the present application) is located 59 mm rearward from the center of the crotch region 1B and is formed to fit along the wearer's crotch when worn, thereby restricting the absorbent pad 1 from shifting forward. In this embodiment, the restricting portion 15 corresponds to the rear end of the upper-layer absorbent mat 6A in the crotch region 1B. Therefore, when worn, the upper-layer absorbent mat 6A is stacked on the lower-layer absorbent mat 6B at the rear of the wearer's thighs (the rear of the crotch), and the restricting portion 15 has a height equivalent to the thickness of the upper-layer absorbent mat 6A. Therefore, when worn, the restricting portion 15 catches the absorbent core 6C on the wearer's thighs, thereby preventing the absorbent core 6C from shifting forward. Furthermore, because the position of the absorbent core 6C corresponding to the wearer's crotch is restricted, the absorbent pad 1 can be easily worn in the correct position and the rear end of the absorbent core 6C is prevented from overlapping and compressing the wearer's ilium. The restricting portion 15 may be formed by squeezing the upper absorbent mat 6A, or may be formed by a slit formed through the upper absorbent mat 6A, as long as it is formed to fit along the crotch area of the wearer.

[0054] The restricting portions 16 (an example of the "fourth restricting portion" referred to in the present application) are formed on both widthwise sides of the crotch region 1B so as to conform to the wearer's legs and restrict displacement of the absorbent pad 1. In this embodiment, the restricting portions 16 have a shape formed by connecting three arcs extending outward in the widthwise direction. The restricting portions 16 are attached so as to conform to the wearer's legs along the fold-back lines 16B located closer to the center in the widthwise direction than the restricting portions 16. Therefore, when the absorbent pad 1 is worn, the restricting portions 16 abut against the wearer's legs and restrict displacement of the absorbent pad 1. Furthermore, since the position of the absorbent core 6C corresponding to the wearer's crotch is restricted, the absorbent pad 1 can be easily attached in the correct position and the rear end of the absorbent core 6C can be prevented from overlapping and compressing the wearer's ilium. The shape and size of the restricting portions 16 can be selected as appropriate. For example, the size of the restricting portions 16 on both widthwise sides may be different, the number of arcs may be increased or decreased, or the three connected arcs may be different sizes.

[0055] Fig. 6 is a diagram showing an example of a folded state of the absorbent pad 1 according to this embodiment in a distribution state. The worn state of the absorbent pad 1 is the form shown in Fig. 1, but it is folded in a product shipping state and distribution state. By folding the absorbent pad 1 in an unused state, it is possible to handle it in a compressed and reduced bulk state while protecting the skin side that comes into contact with the wearer's skin and therefore must maintain a delicate feel.

[0056] More specifically, the absorbent pad 1 in its distributed state is folded in half so as to divide the absorbent pad 1 into approximately two equal parts in the longitudinal direction, as shown in Fig. 6. After being folded as shown in Fig. 6, the absorbent pad 1 is packaged by storing a plurality of sheets in a package. Note that the absorbent pad 1 in its distributed state is not limited to being folded in half, but may also be folded in thirds with the front body region 1F facing outward. Furthermore, before being folded in half so as to divide the absorbent pad 1 into approximately two equal parts in the longitudinal direction, the absorbent pad 1 may be folded back in a C-shape from the non-skin-facing side to the skin-facing side on the outer side in the width direction along a fold line (not shown) that passes through the absorbent pad 1 in the longitudinal direction.

[0057] In the folded state, the entire outer surface of the absorbent pad 1 is covered with the cover sheet 4. The cover sheet 4 is a strong member that is expected to rub against underwear or a diaper when worn. Therefore, the folded absorbent pad 1 does not take pressure when distributed. Even if it is received, it can still maintain its function.

[0058] When the absorbent pad 1 is used, it is spread out flat and put on by the wearer. At this time, the widthwise center of the front body region 1F of the absorbent pad 1 is raised from the back body region 1R by the cutout portion 12 provided in the front body region 1F, and a mountain-shaped tab portion 17 is formed with the widthwise center of the rear end of the cutout portion 12 as a base point. Therefore, when putting on the absorbent pad 1, the operator can easily unfold the absorbent pad 1 by pinching the tab portion 17 formed in the widthwise center of the front body region 1F with his / her fingers. Furthermore, the tab portion 17 forms a gap between the front body region 1F and the back body region 1R. Therefore, when putting on the absorbent pad 1, the operator can pinch the front end of the front body region 1F in the thickness direction by inserting his / her fingers into the gap formed in the widthwise center of the front body region 1F, making it easier to unfold the absorbent pad 1.

[0059] The grip portion 17 is formed by a cutout 12 provided in the front body region 1F. The cutout 12 is a region where the absorbent core 6C is not arranged, and is less rigid than the region where the absorbent core 6C is arranged. Therefore, the widthwise outer side of the cutout 12 is likely to move toward the widthwise center. Therefore, the absorbent pad 1 is mountain-folded from the widthwise center of the rear end of the cutout 12 provided in the front body region 1F as a base point, and moves away from the back body region 1R from the cutout 12 as a base point. Therefore, the widthwise center of the front body region 1F rises from the back body region 1R, forming the grip portion 17.

[0060] Furthermore, when unfolding the folded absorbent pad 1, it is possible to easily unfold it with one hand by pinching the grip portion 17 with the fingers and shaking the absorbent pad 1 up and down.

[0061] Furthermore, since the grip portion 17 is formed in the widthwise center of the front body region 1F, the widthwise center of the absorbent pad 1 can be confirmed during the putting operation without checking the center line or the like marked on the non-skin-facing side of the absorbent pad 1. Therefore, the absorbent pad 1 can be put on the wearer in the correct position.

[0062] When the absorbent pad 1 is worn, if a gap is formed between the wearer and the absorbent pad 1, urine may leak through the gap. Furthermore, if the non-skin-facing side of the absorbent pad 1 is provided with an uneven shape, it may feel uncomfortable against the skin and a gap may be formed between the non-skin-facing side of the absorbent pad 1 and an undergarment or diaper placed on the non-skin-facing side of the absorbent pad 1, which may cause the absorbent pad to become misaligned when worn. On the other hand, when the absorbent pad 1 according to this embodiment is worn on a wearer, the gap formed by the tabs 17 and the tabs 17 expands in the width direction of the absorbent pad 1, forming a cup shape that conforms to the wearer's abdomen. Therefore, the front body region 1F is worn along the curve of the wearer's abdomen, preventing the absorbent pad 1 from penetrating outside the absorbent pad 1. This prevents urine leakage from the abdomen and prevents the non-skin-facing side of the absorbent pad 1 from being worn on the wearer with an uneven shape.

[0063] The cup shape is formed by a cutout 12 provided in the front body region 1F. The cutout 12 is a region where the absorbent core 6C is not arranged, and has lower rigidity than the region where the absorbent core 6C is arranged. Therefore, the widthwise outer side of the cutout 12 is likely to move toward the widthwise center. As a result, the absorbent pad 1 is folded toward the skin side from the widthwise center of the rear end of the cutout 12 as a base point, and moves away from the wearer's skin surface from the cutout 12 as a base point. Therefore, the front body region 1F has a cup shape with a rounded space formed from the cutout 12 as a base point. Therefore, in the front body region 1F, the front end of the absorbent core 6C forms a cup shape that follows the curve of the wearer's abdomen. When worn, the front body region 1F is worn along the wearer's abdomen, preventing the absorbent pad 1 from penetrating outside the absorbent pad 1. In this way, the absorbent pad 1 prevents urine from leaking from the abdomen.

[0064] Additionally, a region where rigidity changes or a folding portion that serves as a base point for folding the absorbent pad 1 is provided behind the cutout portion 12 provided in the front body region 1F. By arranging the region where rigidity changes or the folding portion behind the cutout portion 12, the region becomes a base point for folding the absorbent pad 1, forming the rear end of the cup shape. Therefore, by not arranging the region where rigidity changes or the folding portion, the cup shape is formed over a wide area, and the crotch region 1B is separated from the wearer's urethral opening, preventing the absorber 6 from absorbing urine.

[0065] In this embodiment, the upper absorbent mat 6A is layered on the skin-facing side of the lower absorbent mat 6B, rearward of a position 145 mm forward from the center of the crotch region 1B, and the absorbent core 6C has a raised shape toward the skin-facing side. Therefore, the front end of the upper absorbent mat 6A forms the rear end of the cup shape, so that the area around the wearer's urethral opening abuts the upper absorbent mat 6A, and the front body region 1F conforms to the wearer's abdomen. In this state, the area in front of the upper absorbent mat 6A forms a cup shape, and the absorbent pad 1 is spaced from the wearer's skin, reducing pressure on the wearer's skin. By layering the upper absorbent mat 6A rearward of a position 145 mm forward from the center of the crotch region 1B, the cup shape can be formed in a position that conforms to the shape of the wearer's abdomen, and the upper absorbent mat 6A can abut the wearer's urethral opening. The cutout 12 extends within 50 mm of the rear end of the cutout 12 from the widthwise center. If the cutout portion 12 extends to this region, a cup shape can be formed that conforms to the shape of the wearer's abdomen.

[0066] When worn, the upper-layer absorbent mat 6A in the front body region 1F is wider than the crotch region 1B and has a shape that fits the front side of the wearer's urethral opening, so it abuts the wearer's urethral opening and fits closely to the lower abdomen, preventing urine leakage from the front body region 1F. Also, the cup shape formed in the front side of the upper-layer absorbent mat 6A separates the absorbent pad 1 from the wearer's abdomen, reducing the feeling of pressure on the skin and absorbing the movement of the wearer's abdomen due to breathing, etc., preventing relative displacement.

[0067] The distance from the center of the crotch region 1B to the front end of the lower absorbent mat 6B continuously increases from the cutout 12 in the front body region 1F to the widthwise outer side. The distance from the center of the crotch region 1B to the widthwise center of the cutout 12 in the front body region 1F is 125 mm to 140 mm, the distance to the widthwise outer end of the cutout 12 in the front body region 1F is 110 mm, and the distance to the front end of the lower absorbent mat 6B located at the forefront is 175 mm to 190 mm. The cutout 12 having the above-described shape makes it easy to insert a finger into the gap formed by the tab 17. Furthermore, because the front end of the lower absorbent mat 6B gradually increases in length from the cutout 12 in the front body region 1F to the widthwise outer side, it can be worn along the curve of the wearer's abdomen, preventing the absorbent pad 1 from shifting out of position. It is preferable to increase the distance extending forward as it moves outward in the width direction from the cutout portion 12. Increasing the distance extending forward as it moves outward in the width direction makes it easier to fit the lower abdomen of the wearer, and can more effectively prevent positional shifting.

[0068] As described above, the absorbent pad 1 according to this embodiment has a cutout 12 in the widthwise center of the longitudinal front end of the absorbent core 6C. In a distributed state, the cutout 12 forms a gripping portion 17, making it easier to grip the absorbent pad 1, and also forms a cup shape in the front body region 1F, allowing it to be worn along the wearer's abdomen, facilitating the donning process.

[0069] <Modification> Next, an absorbent pad 1 according to a modified example of this embodiment will be described. In this modified example, the four corners of the absorbent pad 1 are formed in a generally arc-shaped configuration with notches cut out toward the center of the crotch region 1B. However, these corners do not have to be generally arc-shaped. FIG. 7 is a plan view of the absorbent pad 1 according to the modified example. In plan view, the absorbent pad 1 according to this modified example has corners formed by connecting the linear outer edges of the absorbent pad 1 at the widthwise outer edges of both longitudinal ends. In the absorbent pad 1, the cover sheet 4 and the back sheet 5 are formed to be the same size and shape. Furthermore, the side sheets 9L and 9R are formed to be the same shape as the cover sheet 4 and the back sheet 5 at their widthwise ends. Furthermore, at the widthwise center of the longitudinal ends of the absorbent pad 1, the top sheet 8 is formed to be the same shape as the cover sheet 4 and the back sheet 5. Therefore, the cover sheet 4, the back sheet 5, the side sheets 9L and 9R, and a portion of the top sheet 8 form the outer peripheral shape (outer shape) of the absorbent pad 1. In addition, since the back sheet 5 of the absorbent pad 1 is water-impermeable, the cover sheet 4 may be omitted and the back sheet 5 may form the exterior surface.

[0070] The corners formed by the cover sheet 4, the back sheet 5, and the top sheet 8 correspond to the absorbent core non-extending regions 11 where the absorbent body 6 does not extend, and are formed by laminating the top sheet 8 and the back sheet 5 on the cover sheet 4. The absorbent core non-extending regions 11 abut against the wearer's ilium when worn. When worn, the wearer's ilium protrudes outward, easily forming a gap between the absorbent pad 1 and the wearer. This can cause urine to leak through the gap and soil the underwear or diaper worn on the non-skin-facing side of the absorbent pad 1. With the absorbent pad 1 of this modification, the absorbent core non-extending regions 11 of the absorbent pad 1 extend to a position that abuts the ilium, thereby preventing soiling of the underwear or diaper worn on the non-skin-facing side of the absorbent pad 1.

[0071] The configuration of the absorbent body 6 is substantially the same as in the embodiment, but the arc-shaped widthwise outer edges of the lower-layer absorbent mat 6B at both longitudinal ends extending toward the center of the crotch region 1B are formed as arcs originating from the four corners of the top sheet 8. The widthwise outer edges of the longitudinal rear end of the lower-layer absorbent mat 6B are positioned where the wearer's ilium overhangs when worn. Therefore, the substantially arc-shaped edges of the lower-layer absorbent mat 6B conform to the wearer's ilium when worn, preventing the absorbent core 6C from overlapping and compressing the ilium. Furthermore, by wearing the absorbent pad 1 so that the absorbent core 6C conforms to the ilium and buttocks, the position of the absorbent core 6C is stabilized, preventing the top sheet 8 from moving out of its position where it abuts the ilium.

[0072] <Other embodiments> The present invention is applicable not only to absorbent pads but also to pants-type diapers and tape-type diapers.

[0073] In this embodiment, the absorbent core 6C has a notch 12 in the widthwise center of the front end portion thereof, but this is not limited to the notch 12. For example, the rigidity may be reduced by reducing the number of laminated members compared to the adjacent absorbent cores 6C, or the absorbent core 6C may be made compressible by providing folds or elastic members.

[0074] The features included in each of the embodiments and modifications thereof disclosed above can be combined with each other. [Explanation of symbols]

[0075] 1. Absorbent pad 1F: Front body area 1B...Inseam area 1R: Back area 3BL, 3BR... Elastic thread 3LL,3LR･･･Rise line 3L, 3R: 3D gathers 33L,33R・Fixed part 4. Cover sheet 5. Back seat 6. Absorber 6C··Absorbent Core 6A··Upper layer absorbent mat 6B Lower layer absorbent mat 6H, 6AH, 6BH, 6L, 6R Groove 6S...SAP layer 7. Core wrap sheet 7A··Upper layer core wrap sheet 7B··Lower layer core wrap sheet 8. Top sheet 9L, 9R side seats 9LA,9RA·Fixed area 9LB,9RB··Free end 10L,10R・Ear part 11. Absorbent core non-extending region 12. Notch 13, 14, 15, 16 Regulatory Department 16B··Folded line 17··Knob part

Claims

1. a length along a longitudinal direction corresponding to the front-to-back direction of the wearer; a length along a width direction perpendicular to the longitudinal direction; a front body region located in front of the wearer in the front-to-back direction, a back body region located behind the wearer, and a crotch region between the front body region and the back body region, the crotch region having a length in the width direction narrower than the front body region and the back body region; an absorbent core having a notch provided at the center of the front end in the width direction and cut out toward the rear, for absorbing urine; Absorbent articles.

2. The absorbent core is formed by stacking absorbent mats for absorbing urine in the thickness direction, and includes an upper-layer absorbent mat arranged on the wearer's skin side among the stacked absorbent mats, and a lower-layer absorbent mat stacked on the non-skin-facing side of the upper-layer absorbent mat, The crotch region has a crotch region center portion at a position 145 mm from the rear end of the upper-layer absorbent mat, the cutout portion is located between 125 mm and 140 mm from the center of the crotch region, a front end portion of the absorbent core extending forward from the notch portion toward the outside in the width direction; The length from the center of the crotch region to the front end of the absorbent core is 175 mm or more and 190 mm or less. The absorbent article of claim 1.

3. The extension length from the center of the crotch region to the front end of the absorbent core increases from the center in the width direction to the outer sides in the width direction. The absorbent article of claim 2.

4. The absorbent core has a first restriction portion formed along the buttocks of the wearer on the rear side of the central portion of the crotch region, and restricts positional deviation when the absorbent core is worn. The absorbent article of claim 2.

5. The absorbent core has a second restriction portion formed along the groin of the wearer on the front side of the central portion of the crotch region, and restricts displacement of the absorbent core when the absorbent core is worn. The absorbent article of claim 2.

6. The absorbent core has a third restriction portion formed along the crotch of the wearer on the rear side of the central portion of the crotch region, and restricts positional deviation when the absorbent core is worn. The absorbent article of claim 2.

7. The upper-layer absorbent mat has a shape that is inclined outward in the width direction toward the front side, The lower absorbent mat extends in the width direction in a region that comes into contact with the wearer's groin. The absorbent article of claim 2.

8. The absorbent article includes a water-permeable sheet disposed on the wearer's skin side of the absorbent core; a pair of leak-proof wall-forming sheets arranged outside the center in the width direction, The pair of leak-proof wall-forming sheets are A joining portion in which the outer side in the width direction is joined to the water-permeable sheet; a leak-proof wall that stands up on the wearer's skin side on the inner side of the joint in the width direction; an elastic member bonded to a free end portion of the leak-barrier wall, which is an end portion of the leak-barrier wall facing the skin of the wearer, so as to extend in a stretched state in the longitudinal direction; a fixing portion connected to the water-permeable sheet on the outer side in the extension direction of the elastic member, The fixed portion overlaps the front end portion of the absorbent core in the thickness direction in the front body region. The absorbent article according to any one of claims 1 to 7.

9. In the front body region, a rear end of the fixed portion is located rearward of a rear end of the cutout portion. The absorbent article of claim 8.

10. The absorbent core has a shape that is raised toward the wearer's skin side, behind the cutout portion. The absorbent article according to any one of claims 1 to 7.

11. In the crotch region, a fourth restriction portion is provided which extends in an arc shape outward in the width direction and restricts positional deviation when worn. The absorbent article according to any one of claims 1 to 7.

12. The absorbent core has a shape in which both sides of the rear end in the width direction are cut out toward the crotch region. The absorbent article according to any one of claims 1 to 7.

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