Absorbent article

Abstract

To provide an absorbent article that is easy to be fixed to an underwear of various crotch widths and can be prevented from being detached from the underwear.SOLUTION: An absorbent article 10 according to the present disclosure includes: an absorbent body 20 having a top sheet, a back sheet 22, and an absorbent; right and left wings 32 arranged on both sides in a width direction of a non-skin side surface 20b of the absorbent body 20 and extending from a proximal end 32a located further inside in the width direction than a side edge 20c in the width direction of the absorbent body 20 to further outside in the width direction than the side edge 20c; and an adhesive layer 40 enabling the absorbent body 20 to be attached to an attachment target. The non-skin side surface 20b of the absorbent body 20 has: a middle region 24 located in a middle part in a longitudinal direction and provided with the right and left wings 32; and an outside region 25 further on both sides in the longitudinal direction than the middle region 24. The right and left wings 32 are arranged at positions different from each other in the longitudinal direction. The adhesive layer 40 is provided at least in the outside region 25 of the absorbent body 20 and the non-skin side surface of the right and left wings 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to absorbent articles. [Background technology]

[0002] Patent Document 1 discloses a sanitary napkin. The back surface of the back sheet of this sanitary napkin is coated with a strip of adhesive that is usually used in this type of absorbent article to fix the sanitary napkin to shorts, providing multiple adhesive areas. The sanitary napkin is provided with a pair of left and right fixing tongues on both left and right sides in the width direction of the back sheet side to fix the napkin to undergarments, with their base ends positioned inward from the side edges of the back sheet. The inner surface of the fixing tongues is coated with adhesive to form a rectangular adhesive area. The area between the base ends of the fixing tongues on both sides is subjected to a release treatment. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-290556 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the crotch width of general shorts (underwear) varies, but in many cases the width of the crotch of shorts is narrower than that of light incontinence products or sanitary products (hereinafter referred to as "absorbent articles"). There are products with wings to prevent the absorbent article from slipping, but if wings are attached to fit the narrow crotch width of shorts, the main body of the absorbent article may deform, compromising comfort and functionality.

[0005] In the sanitary napkin (absorbent article) described in Patent Document 1, the base end of the fixing tongue (wing) is located inward from the side edge of the back sheet, taking into consideration the wearing of the napkin on shorts with a narrow crotch width. However, if the left and right wings overlap, the wearing comfort may be reduced. In addition, there is no adhesive part in the area between the wings, which leads to a decrease in the overall peel strength and is not able to support the absorbent article that has absorbed water and swelled, which may cause the article to slip or twist, or to unexpectedly come off from the shorts when the underwear is removed in the toilet.

[0006] Therefore, an object of the present disclosure is to provide an absorbent article that can be easily fixed to undergarments of various crotch widths and that can be prevented from coming off. [Means for solving the problem]

[0007] In order to solve the above problems, an absorbent article according to a first aspect of the present invention has a liquid-permeable top sheet on the skin side, a liquid-impermeable back sheet on the non-skin side, and an absorbent body located between the top sheet and the back sheet, and comprises an absorbent main body that is long in a first direction and short in a second direction intersecting with the first direction, and a pair of absorbent bodies that are arranged on both sides of the non-skin side of the absorbent main body in the second direction, extend from a base end located inside the side edges of the absorbent main body in the second direction to an outer side of the side edges in the second direction, and extend about an axis extending from the base end. and left and right wings that can be tilted as an attachment means, and an adhesive layer that can attach the absorbent body to an attachment target, the non-skin side of the absorbent body having a middle region located midway in the first direction where the left and right wings are provided, and outer regions on both sides in the first direction beyond the middle region, the left and right wings are arranged at different positions from each other in the first direction, and the adhesive layer is provided at least on the outer regions on both sides in the first direction of the non-skin side of the absorbent body and on the non-skin side of the left and right wings.

[0008] A second aspect of the present invention is an absorbent article according to the first aspect described above, wherein the base ends of the left and right wings are spaced apart from each other in the second direction, and wing fixing portions are provided between the base ends of the left and right wings to connect the base ends of the left and right wings and fix the left and right wings to the non-skin side of the absorbent main body, and the adhesive layer is also provided on the non-skin side of the wing fixing portions.

[0009] A third aspect of the present invention is an absorbent article of the second aspect described above, wherein the length of the wing fixing portion in the second direction is 20 mm or more and 50 mm or less, and is 20% or more and 60% or less of the length of the intermediate region of the absorbent main body in the second direction.

[0010] A fourth aspect of the present invention is an absorbent article of the first aspect or the second aspect, wherein the areas of the non-skin side of the absorbent body that overlap with the left and right wings are non-adhesive areas where the adhesive layer is not provided.

[0011] A fifth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the adhesive layer is made of a hot melt adhesive, and a region of the left and right wings extending from the one side wing located closest to one side in the first direction to the one side by 5 mm to 10 mm, and a region of the other side wing located closest to the other side in the first direction to the other side by 5 mm to 10 mm, are non-adhesive regions in which the adhesive layer is not provided.

[0012] A sixth aspect of the present invention is an absorbent article of the second aspect described above, wherein the area of ​​the adhesive layer provided in the outer regions on both sides of the non-skin side of the absorbent main body in the first direction is between 20% and 60% of the area of ​​the outer regions of the absorbent main body taken as 100%, and the area of ​​the adhesive layer provided in the left and right wings and the wing fixing portion is between 30% and 70% of the area of ​​the left and right wings and the wing fixing portion taken as 100%.

[0013] A seventh aspect of the present invention is an absorbent article of the first aspect or the second aspect, wherein the longitudinal distance between the first direction end of the absorbent main body and the wing of the left and right wings that is closest to the end of the absorbent main body is 50 mm or more and 100 mm or less.

[0014] An eighth aspect of the present invention is an absorbent article according to the first aspect or the second aspect, wherein the length in the second direction of the central part in the first direction of the absorbent main body is 30 mm or more and 150 mm or less.

[0015] A ninth aspect of the present invention is an absorbent article of the second aspect described above, wherein the length in the second direction from the tip of one of the left and right wings to the tip of the other wing is longer than the length of the absorbent main body in the second direction by a range of 20 mm to 70 mm, and the length in the first direction of the wing fixing portion is 30 mm to 120 mm.

[0016] A tenth aspect of the present invention is the absorbent article according to the first or second aspect, wherein the length of the left and right wings in the first direction is 10 mm or more and 50 mm or less. Effect of the Invention

[0017] According to the present disclosure, it is possible to provide an absorbent article that can be easily fixed to undergarments of various crotch widths and that can prevent peeling off. [Brief description of the drawings]

[0018] [Figure 1] 1 is a plan view of an absorbent article according to one embodiment of the present invention, viewed from the skin side. [Diagram 2] FIG. 2 is a plan view of the absorbent article of FIG. 1, viewed from the non-skin side. [Diagram 3] FIG. 2 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] 13 is a plan view of an absorbent article viewed from the non-skin side, showing a modified example of the position of the adhesive layer. FIG. [Diagram 5]FIG. 2 is an explanatory diagram showing the absorbent article attached to shorts as viewed from the non-skin side of the shorts. [Figure 6] 6 is a cross-sectional view taken along the line VI-VI in FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an absorbent article according to one embodiment of the present invention will be described with reference to the drawings.

[0020] In this specification, wearing an absorbent article means a state in which shorts (underwear) with an absorbent article attached are worn on the body, regardless of whether the absorbent article is attached before, during, or after the absorption of bodily fluids. In addition, the "front side" means a direction that is the wearer's ventral side when the absorbent article is worn, and the "rear side" means a direction that is the wearer's back side. In addition, the left-right direction means a left-right direction as seen from a wearer facing forward. In addition, the longitudinal direction (first direction) of each component of the absorbent article means the longitudinal direction of the absorbent article, which is a direction along the front and back of the wearer when worn, and is a direction along the arrow X in the figure. In addition, the width direction (second direction) of each component of the absorbent article means a direction that intersects (is perpendicular to) the longitudinal direction, which is a direction along the left and right of the wearer when worn, and is a direction along the arrow Y in the figure. In addition, the thickness direction of each component of the absorbent article means a direction in which each component is layered, and is a direction along the arrow Z in the figure. In addition, "skin side" means the direction toward the wearer's body when the absorbent article is worn in the thickness direction, and "non-skin side" means the direction opposite to the skin side in the thickness direction. In addition, bodily fluids refer to liquids discharged from the body to the outside, such as urine, blood, and water in loose stools. In addition, examples of absorbent articles include sanitary napkins and products for light incontinence, but are not limited to these, and may be other absorbent articles.

[0021] [Absorbent articles] Fig. 1 is a plan view of an absorbent article according to one embodiment of the present invention, as viewed from the skin side. Fig. 2 is a plan view of the absorbent article of Fig. 1, as viewed from the non-skin side. Fig. 3 is a cross-sectional view taken along the line III-III in Fig. 1. Fig. 4 is a plan view of an absorbent article, as viewed from the non-skin side, showing a modified example of the position of the adhesive layer. Fig. 3 shows a schematic cross section of the absorbent article.

[0022] The absorbent article 10 according to the present disclosure is an article for absorbing and retaining bodily fluids, and is attached to the skin side of the crotch portion 1a of underwear, shorts (attachment subject) 1 when in use. Note that the absorbent article 10 in Fig. 1 is the absorbent article 10 before being attached to the shorts 1, but the shorts 1 are tentatively illustrated by two-dot chain lines to show the attachment position.

[0023] As shown in Figures 1 to 3, the absorbent article 10 comprises an absorbent main body 20 that absorbs and retains bodily fluids, wing members 30 that prevent the absorbent main body 20 from shifting relative to the shorts 1, and an adhesive layer 40 that can attach the absorbent main body 20 to the shorts 1.

[0024] [Absorbent body] The absorbent main body 20 has a liquid-permeable top sheet 21, a liquid-permeable back sheet 22, and an absorbent body 23 disposed between the top sheet 21 and the back sheet 22. The absorbent main body 20 is formed long in a first direction (hereinafter referred to as the "longitudinal direction") and short in a second direction (hereinafter referred to as the "width direction"). The top sheet 21 is positioned on the skin side when worn. The back sheet 22 is positioned on the non-skin side when worn. In addition to the top sheet 21, the back sheet 22, and the absorbent body 23, the absorbent main body 20 may have other members (for example, a cover sheet that wraps the absorbent body 23, three-dimensional gathers on both sides in the width direction, etc.).

[0025] The shape of the absorbent main body 20 is not particularly limited, but examples include an hourglass shape, a substantially rectangular shape, an oval shape, etc. In this embodiment, an oval-shaped absorbent main body 20 will be described.

[0026] (Absorbent body dimensions) The longitudinal length (longest dimension; the same applies below) L1 of the absorbent main body 20 is preferably 140 mm or more and 400 mm or less. The widthwise length W1 of the absorbent main body 20 is preferably 30 mm or more and 180 mm or less. By adjusting the dimensions of the absorbent main body 20 within the above ranges, it is possible to obtain an absorbent main body 20 suitable for sanitary napkins and light incontinence products.

[0027] (Top sheet) The top sheet 21 is a liquid-permeable sheet-like substrate that quickly passes bodily fluids toward the absorbent body 23 and diffuses the bodily fluids in the surface direction of the absorbent body 23. The top sheet 21 is preferably a substrate that is soft to the touch and does not irritate the skin so that it may be in direct contact with the wearer's skin. Examples of substrates include nonwoven fabrics such as air-through nonwoven fabrics, thermal bond nonwoven fabrics, and spunbond nonwoven fabrics, open-type films such as open-type polyethylene films, foamed films such as polyethylene foams and urethane foams, and multilayer sheets formed by laminating two or more of these.

[0028] The surface of the top sheet 21 may be embossed or perforated to improve liquid permeability. Any known method may be used for embossing or perforating the top sheet 21 without any restrictions. Furthermore, the top sheet 21 may contain lotion, antioxidant, anti-inflammatory component, pH adjuster, antibacterial agent, moisturizer, etc. to reduce irritation to the skin.

[0029] (Back seat) The back sheet 22 may be formed using a liquid-impermeable substrate that prevents the body fluid held by the absorber 23 from wetting the wearer's clothing, and examples of the substrate include a resin film and a composite sheet that is a laminate of a resin film and a nonwoven fabric. The nonwoven fabric used in the composite sheet is not particularly limited in its manufacturing method, and examples thereof include single-layer nonwoven fabrics such as spunbond nonwoven fabrics and meltblown nonwoven fabrics, composite nonwoven fabrics such as spunbond nonwoven fabrics / meltblown nonwoven fabric laminates, and composite materials thereof. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and composite films of polyethylene and polypropylene.

[0030] It is preferable that the back sheet 22 has breathability to prevent stuffiness during wear. In order to provide the back sheet 22 with breathability, for example, a filler may be blended into the resin film of the base material, or the back sheet 22 may be embossed. An example of the filler is calcium carbonate, and the blending method may be any known method without any restrictions.

[0031] (Absorbent) Examples of the absorbent body 23 include a fluff absorbent body containing absorbent fibers and superabsorbent polymer (hereinafter sometimes referred to as "SAP"), and a SAP sheet in which SAP particles are fixed between liquid absorbent sheets.

[0032] The absorbent fiber is not particularly limited as long as it is generally used in absorbent articles such as sanitary napkins, paper diapers, and urine pads, and examples thereof include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic nonwoven fabric, etc. Examples of fluff pulp include wood pulp (e.g., bleached coniferous kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fiber, resin fiber, non-wood pulp, etc. that have been defibrated into a cotton-like state. Examples of the liquid absorbent sheet include sheets composed of one or more of the above absorbent fibers.

[0033] The superabsorbent polymer is not particularly limited as long as it can absorb body fluids and prevent backflow, and examples thereof include polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and saponification products thereof. Among these, from the viewpoint of absorption amount per weight, polyacrylates are preferred, polyacrylic acid alkali metal salts are more preferred, and polyacrylate sodium is even more preferred. The superabsorbent polymers can be used alone or in combination of two or more.

[0034] In the absorbent body 23, the absorbent fibers and SAP may be in the form of a mixture of SAP particles in the absorbent fibers, or SAP particles may be fixed between the absorbent fibers.

[0035] (Cover sheet) A cover sheet (not shown) may be provided to encase the absorbent body 23 in order to prevent leakage of the SAP particles and to stabilize the shape of the absorbent body 23. The base material of the cover sheet may be any material that has hydrophilic properties, and examples of such base materials include hydrophilic nonwoven fabrics such as tissue, absorbent paper, airlaid nonwoven fabrics, and spunbond nonwoven fabrics. Among these, spunbond nonwoven fabrics are preferable. When multiple cover sheets are provided, the base materials of the multiple cover sheets may be the same or different.

[0036] (3D gathers) Furthermore, left and right three-dimensional gathers may be provided on the skin side 20a of the absorbent body 20 to prevent side leakage, etc., of bodily fluids excreted by the wearer. The three-dimensional gathers are provided to extend along the longitudinal direction at both ends in the width direction of the skin side of the top sheet 21. The three-dimensional gathers include a water-repellent and / or waterproof gathered sheet, and an elastic stretchable member such as rubber thread that imparts uprightness to the free end side of the gathered sheet.

[0037] [Wing parts] The wing members 30 are members that enable the absorbent main body 20 to be attached to the crotch portion 1a of the shorts 1 and prevent the absorbent main body 20 attached to the shorts 1 from shifting, and are provided on the non-skin side 20b of the absorbent main body 20. Examples of the base material for the wing members 30 include nonwoven fabric, resin film, and composite sheets that are laminates of resin film and nonwoven fabric.

[0038] The wing member 30 integrally comprises a wing fixing part 31 on the widthwise center side fixed to the non-skin side 20b of the absorbent main body 20, and left and right wings 32 extending outward in the width direction (in a direction away from the widthwise center) from both widthwise ends of the wing fixing part 31. That is, the absorbent article 10 comprises left and right wings 32.

[0039] (Wing fixing part) The wing fixing part 31 is a part that fixes the left and right wings 32 to the non-skin side surface 20b of the absorbent main body 20, and is located between the base ends 32a (positions shown by dashed lines in FIG. 2) of the left and right wings 32, which will be described later, and connects the base ends 32a of the left and right wings 32 to each other. That is, the wing fixing part 31 is a part of the wing member 30 that is located between the base ends 32a of the left and right wings 32. The wing fixing part 31 is a non-movable part that does not move relative to the absorbent main body 20. The shape of the wing fixing part 31 in this embodiment is rectangular. The wing fixing part 31 is fixed to the middle region 24 located in the middle of the non-skin side surface 20b of the absorbent main body 20 in the longitudinal direction. Both ends in the width direction of the wing fixing part 31 are located at positions spaced apart from the side edges 20c on both sides in the width direction of the non-skin side surface 20b of the absorbent main body 20 toward the inside in the width direction (toward the center in the width direction).

[0040] The intermediate region 24 of the non-skin side 20b of the absorbent main body 20 does not include the longitudinal ends of the absorbent main body 20, but includes at least the longitudinal center of the absorbent main body 20, and is the region where the wing members 30 (left and right wings 32) are provided. The intermediate region 24 is a region of the non-skin side 20b of the absorbent main body 20, the both longitudinal sides of which are partitioned by the longitudinal ends on one side and the longitudinal ends on the other side of the wing members 30 (left and right wings 32). On the outer sides of both longitudinal sides of the intermediate region 24 of the non-skin side 20b of the absorbent main body 20, front and rear outer regions 25 where the left and right wings 32 are not provided are provided.

[0041] The widthwise length W2 of the longitudinal center portion of the absorbent body 20 (the widthwise length of the intermediate region 24 in this embodiment) is preferably 30 mm or more and 150 mm or less. If the widthwise length W2 of the longitudinal center portion of the absorbent body 20 is shorter than 30 mm, it will be unnecessarily thin relative to the crotch portion 1a of the shorts 1, and will not be able to fulfill its role as the absorbent body 20. On the other hand, if the widthwise length W2 of the longitudinal center portion of the absorbent body 20 is longer than 150 mm, it will be too wide and will significantly protrude from the crotch portion 1a, significantly reducing comfort when worn.

[0042] The length L2 of the wing fixing part 31 in the longitudinal direction is preferably 30 mm or more and 120 mm or less. If the length L2 of the wing fixing part 31 in the longitudinal direction is shorter than 30 mm, the left and right wings 32 become unstable and difficult to handle, and the length of the left and right wings 32 in the longitudinal direction becomes too short, so that they may not be firmly fixed to the underwear. On the other hand, if the length L2 of the wing fixing part 31 in the longitudinal direction is longer than 120 mm, the length of the left and right wings 32 in the longitudinal direction becomes longer, so that the left and right wings 32 may get caught on the front and rear curves (wide parts of the fabric) of the leg openings of the shorts 1, and the left and right wings 32 may not be neatly folded when worn.

[0043] The widthwise length W3 of the wing fixing part 31 is preferably 20 mm or more and 50 mm or less, and is preferably 20% or more and 60% or less of the widthwise length W2 of the intermediate region 24 of the absorbent main body 20. If the widthwise length W3 of the wing fixing part 31 is made shorter than 20 mm or smaller than 20% of the widthwise length W2 of the intermediate region 24, the left and right wings 32 become unstable, making handling during wearing difficult, and the range of motion of the left and right wings 32 becomes too large, causing the left and right wings 32 to move too freely and possibly unexpectedly adhering to the adhesive layer 40 of the absorbent main body 20, which will be described later. Furthermore, the wing fixing part 31 becomes easily damaged when removed, and the absorbent main body 20 and the left and right wings 32 may separate. On the other hand, if the widthwise length W3 of the wing fixing portion 31 is made longer than 50 mm or greater than 60% of the widthwise length W2 of the intermediate region 24, it will not be possible to accommodate shorts 1 with a short (thin) widthwise length of the crotch portion 1a, and the absorbent body 20 may deform when worn, compromising the wearing comfort and functionality.

[0044] (Left and right wings) The left and right wings 32 are disposed on both sides in the width direction of the non-skin side surface 20b of the absorbent main body 20. The left and right wings 32 extend from base ends 32a located on the inner side of the side edges 20c on both sides in the width direction of the absorbent main body 20 to the outer side of the side edges 20c of the absorbent main body 20 in the width direction. The left and right wings 32 of this embodiment extend outward in the width direction from both ends in the width direction of the wing fixing portion 31. That is, the base ends 32a of the left and right wings 32 are spaced apart from each other in the width direction, and the left and right wings 32 protrude outward in the width direction from the side edges 20c of the absorbent main body 20. The tip ends 32b of the left and right wings 32 are free ends, and the left and right wings 32 can tilt about the base ends 32a (see the two-dot chain line in FIG. 3). That is, the left and right wings 32 of the wing member 30 are movable regions, and the wing fixing portion 31 is a non-movable region. Note that the left and right wings 32 are folded when the absorbent article 10 is worn, but in the following description, unless otherwise specified, the left and right wings 32 are described in an unfolded, unfolded state (as shown in each drawing).

[0045] The left and right wings 32 are disposed at different positions in the longitudinal direction. In this embodiment, one wing 32A is provided on one side in the width direction, and two wings 32B and 32C are provided on the other side, totaling three wings 32A, 32B, and 32C. The wings 32B and 32C on the other side in the width direction are disposed spaced apart from each other in the longitudinal direction. Moreover, the wing 32A on one side in the width direction is disposed at a position in the longitudinal direction between the two wings 32B and 32C on the other side.

[0046] The number of left and right wings 32 is not particularly limited. For example, as shown in FIG. 4(c), at least one pair may be provided at different positions in the longitudinal direction, or four or more wings may be provided at different positions in the longitudinal direction.

[0047] Of the left and right wings 32, the distance L3 between the wing 32 (in this embodiment, the wing (one-side wing) 32B) located closest to one side in the longitudinal direction (for example, the upper side in FIG. 2) and the end 20d of the one side in the longitudinal direction of the absorbent main body 20 is preferably 50 mm or more and 100 mm or less. Also, the distance L4 between the wing 32 (in this embodiment, the wing (other-side wing) 32C) located closest to the other side in the longitudinal direction (for example, the lower side in FIG. 2) and the end 20d of the other side in the longitudinal direction of the absorbent main body 20 is preferably 50 mm or more and 100 mm or less. In other words, the longitudinal distances L3, L4 between the end 20d of the absorbent main body 20 in the longitudinal direction and the wings 32B, 32C located closest to the end 20d are preferably 50 mm or more and 100 mm or less. The positions of the left and right wings 32 are often used as a reference when attaching the absorbent body 20 to the shorts 1, so if the distances L3, L4 from the longitudinal ends 20d of the absorbent body 20 to the wings 32B, 32C are set outside the above range, when the left and right wings 32 are attached to the crotch portion 1a, the absorbent body 20 will be positioned misaligned front to back, making the absorbent body 20 extremely long or short front to back, which may make it difficult to attach the absorbent body 20 in the appropriate position.

[0048] The widthwise length W4 of the left and right wings 32 from the tip of one wing 32A to the tip of the other wing 32B, 32C in the widthwise direction (hereinafter referred to as "maximum width W4 of the left and right wings 32") is preferably longer than the widthwise length W1 of the absorbent body 20 by 20 mm to 70 mm. If the maximum width W4 of the left and right wings 32 is shorter than 20 mm, the length is insufficient for folding back along the crotch portion 1a, making it difficult to put on, and even if it can be put on, it may not be firmly attached, making the absorbent body 20 unstable and reducing the slip prevention effect. On the other hand, if the maximum width W4 of the left and right wings 32 is longer than 70 mm, the left and right wings 32 may become unnecessarily long.

[0049] The length L5 of the left and right wings 32 in the longitudinal direction is preferably 10 mm or more and 50 mm or less. If the length L5 of the left and right wings 32 in the longitudinal direction is shorter than 10 mm, the left and right wings 32 may become easily detached from the shorts 1, and the slip prevention effect may decrease. On the other hand, if the length L5 of the left and right wings 32 in the longitudinal direction is longer than 50 mm, the left and right wings 32 may become bulky and cause discomfort, and the length of the left and right wings 32 in the longitudinal direction may exceed the length of the crotch portion 1a or be too long to be worn properly.

[0050] [Adhesive layer] The adhesive layer 40 is an adhesive layer for attaching the absorbent main body 20 to the shorts 1, and is provided at least on outer regions 25 on both longitudinal sides of the non-skin side surface 20b of the absorbent main body 20 and on the non-skin side surfaces of the left and right wings 32. In this embodiment, it is also provided on the non-skin side surfaces of the wing fixing portions 31 of the wing member 30. That is, the adhesive layer 40 of this embodiment includes an adhesive layer 40a provided in the outer region 25 of the non-skin side surface 20b of the absorbent main body 20, an adhesive layer 40b provided on the non-skin side surfaces of the left and right wings 32, and an adhesive layer 40c provided on the non-skin side surfaces of the wing fixing portions 31.

[0051] The adhesive for forming the adhesive layer 40 is not particularly limited, and examples thereof include hot melt adhesives such as polyacrylic acid ester, vinyl acetate-ethylene copolymer, vinyl acetate-acrylic copolymer, polymethyl methacrylate, polystyrene, styrene-acrylic copolymer, polyester resin, epoxy resin, butadiene-styrene copolymer, etc. These may be used alone or in combination. The adhesive layer 40 can be formed by applying the above adhesive to the non-skin side surface 20b of the absorbent body 20 and the non-skin side surface of the wing member 30. A removable sheet (such as release paper) may be attached to the adhesive layer 40 of the absorbent article 10 before use to protect the adhesive layer 40.

[0052] The area (total area; the same applies below) of the adhesive layer 40a provided on both sides of the outer region 25 in the longitudinal direction of the non-skin side 20b of the absorbent body 20 is preferably 20% to 60% of the area of ​​the outer region 25 of the non-skin side 20b of the absorbent body 20 (hereinafter, sometimes referred to as the "area of ​​the outer region 25") taken as 100%. If the ratio of the area of ​​the adhesive layer 40a to the area of ​​the outer region 25 taken as 100% is less than 20%, sufficient fastening force may not be obtained, and the desired anti-slip effect may not be obtained. On the other hand, if the ratio of the area of ​​the adhesive layer 40a to the area of ​​the outer region 25 taken as 100% is more than 60%, the shorts 1 may be damaged.

[0053] The area of ​​the adhesive layers 40b, 40c provided on the left and right wings 32 and the wing fixing portion 31 (wing member 30) is preferably 30% or more and 70% or less when the area of ​​the left and right wings 32 and the wing fixing portion 31 (hereinafter sometimes referred to as the "area of ​​the wing member 30") is 100%. If the ratio of the area of ​​the adhesive layers 40b, 40c to the area of ​​the wing member 30 is 100%, sufficient fastening force cannot be obtained, and the desired anti-slip effect may not be obtained. On the other hand, if the ratio of the area of ​​the adhesive layers 40b, 40c to the area of ​​the wing member 30 is 100%, the shorts 1 may be damaged if the ratio of the area of ​​the adhesive layers 40b, 40c to the area of ​​the wing member 30 is 100% and more than 70%.

[0054] (Non-adhesive area) The regions of the non-skin side surface 20b of the absorbent main body 20 that overlap with the left and right wings 32 are non-adhesive regions 41 where no adhesive layer 40 is provided. By making the non-skin side surface 20b of the absorbent main body 20 located on the skin side of the left and right wings 32 into the non-adhesive region 41 in this way, even if the non-skin side surface 20b of the absorbent main body 20 located on the skin side of the left and right wings 32 is exposed when the left and right wings 32 are folded while wearing the absorbent article 10, it is only the non-adhesive region 41 that is exposed (see FIG. 5), and the adhesive layer 40 is not exposed.

[0055] Of the left and right wings 32, a region of 5 mm to 10 mm from the wing 32 (wing 32B in this embodiment) located on the furthest one side in the longitudinal direction (e.g., the upper side in FIG. 2) to the one side (upper side) and a region of 5 mm to 10 mm from the wing 32 (wing 32C in this embodiment) located on the furthest other side in the longitudinal direction (e.g., the lower side in FIG. 2) to the other side (lower side) are non-adhesive regions 42 where no adhesive layer 40 is provided. In this embodiment, the regions of 5 mm to 10 mm from the left and right wings 32B, 32C are non-adhesive regions 42, so that the left and right wings 32 can be easily raised, and unexpected adhesion of the left and right wings 32 to the adhesive layer 40 on the absorbent main body 20 side after the raising can be suppressed. For example, if the adhesive layer 40 is provided so as to continue from the non-skin side surface 20b of the absorbent main body 20 to the left and right wings 32, when the left and right wings 32 are raised during use, the hand will touch the adhesive layer 40 on the absorbent main body 20 side, making it difficult to raise the left and right wings 32. In addition, after the left and right wings 32 are raised, there is a possibility that the left and right wings 32 will unexpectedly adhere to the adhesive layer 40 on the absorbent main body 20 side.

[0056] (Arrangement of adhesive layer) Next, an example of the arrangement of the adhesive layer 40 will be described with reference to Fig. 2 and Fig. 4. In the modification of Fig. 4, the same members as those in this embodiment are denoted by the same reference numerals as those in this embodiment.

[0057] For example, as shown in FIG. 2, the adhesive layer 40a provided in the outer region 25 of the non-skin side surface 20b of the absorbent main body 20 (hereinafter referred to as the "adhesive layer 40a of the outer region 25") may be four strip-shaped adhesive layers 40a arranged at a distance from each other in the width direction and extending in the longitudinal direction. Also, the adhesive layer 40b provided on the non-skin side surfaces of the left and right wings 32 (hereinafter referred to as the "adhesive layers 40b of the left and right wings 32") may be two strip-shaped adhesive layers 40b provided at the tip portions of each wing 32, arranged at a distance from each other in the width direction and extending in the longitudinal direction. Also, the adhesive layer 40c provided on the non-skin side surface of the wing fixing portion 31 (hereinafter referred to as the "adhesive layer 40c of the wing fixing portion 31") may be four strip-shaped adhesive layers 40c arranged at a distance from each other in the width direction and extending in the longitudinal direction, and may be located at the same widthwise position as the adhesive layer 40a of the outer region 25.

[0058] 4(a), the adhesive layer 40a in the outer region 25 may be five strip-shaped adhesive layers 40a arranged at a distance from one another in the width direction and extending in the longitudinal direction. The adhesive layers 40b in the left and right wings 32 may be rectangular adhesive layers 40b provided at the tip portions of the respective wings 32. The adhesive layer 40c in the wing fixing portion 31 may be five strip-shaped adhesive layers 40c arranged at a distance from one another in the width direction and extending in the longitudinal direction, and may be arranged at the same widthwise position as the adhesive layer 40a in the outer region 25.

[0059] 4(b), the adhesive layer 40a in the outer region 25 may be three strip-shaped adhesive layers 40a spaced apart from one another in the longitudinal direction and extending in the width direction. The adhesive layers 40b in the left and right wings 32 may be rectangular adhesive layers 40b provided at the tip portions of the respective wings 32. The adhesive layer 40c in the wing fixing portion 31 may be three strip-shaped adhesive layers 40c spaced apart from one another in the longitudinal direction and extending in the width direction, and the longitudinal length of the middle adhesive layer 40c may be longer than the longitudinal lengths of the other adhesive layers 40c on both sides.

[0060] Alternatively, as shown in FIG. 4(c), the adhesive layer 40a in the outer region 25 may be two strip-shaped adhesive layers 40a arranged at a distance from each other in the width direction and extending in the longitudinal direction. The adhesive layers 40b in the left and right wings 32 may be rectangular adhesive layers 40b provided at the tip portions of the wings 32. The adhesive layer 40c in the wing fixing portion 31 may be two strip-shaped adhesive layers 40c arranged at a distance from each other in the width direction and extending in the longitudinal direction, and may be arranged at the same widthwise position as the adhesive layer 40a in the outer region 25. FIG. 4(c) illustrates an embodiment having two left and right wings 32 arranged at different positions in the longitudinal direction.

[0061] Next, the case where the absorbent article 10 is attached to the shorts 1 will be described.

[0062] Fig. 5 is an explanatory diagram showing the absorbent article worn in shorts as viewed from the non-skin side of the shorts, Fig. 6 is a cross-sectional view taken along line VI-VI in Fig. 5.

[0063] When the absorbent article 10 is attached to the shorts 1, the adhesive layer 40a (see FIG. 2) of the outer region 25 of the non-skin side 20b of the absorbent main body 20 and the adhesive layer 40c (see FIG. 2) of the wing fixing portion 31 are attached to the skin side of the crotch portion 1a of the shorts 1. Next, as shown in FIG. 5 and FIG. 6, the left and right wings 32 are folded inward in the width direction along the side edges in the width direction of the crotch portion 1a, and the adhesive layers 40b of the left and right wings 32 are attached to the non-skin side of the crotch portion 1a. In this manner, the absorbent article 10 is attached to the shorts 1.

[0064] The absorbent article 10 configured as described above includes left and right wings 32 that extend from a base end 32a located on the inner side of the widthwise side edge 20c of the absorbent main body 20 to the outer side of the widthwise side edge 20c of the absorbent main body 20 and can tilt around the base end 32a as an axis. Therefore, even if the width (crotch width) of the crotch portion 1a of the shorts 1 is narrower than the width of the absorbent main body 20, the left and right wings 32 can be folded along the widthwise side edges of the crotch portion 1a without rolling up the absorbent main body 20 (see Figs. 5 and 6). In this way, the absorbent article 10 can be attached to the crotch portion 1a of the shorts 1 while suppressing deformation of the absorbent main body 20, so that the comfort of the absorbent main body 20 when worn and the deterioration of the functionality of the absorbent main body 20 can be suppressed.

[0065] Since the left and right wings 32 can be folded along the side edges in the width direction of the crotch portion 1a, it is possible to accommodate shorts (underwear) 1 with various crotch widths, and the absorbent article 10 can be securely attached to the crotch portion 1a of the shorts 1. As a result, shifting of the absorbent article 10 relative to the shorts 1 can be suppressed.

[0066] Furthermore, since the left and right wings 32 can be folded along the side edges in the width direction of the crotch portion 1a, there is no need to forcibly roll up the left and right wings 32 to match the width of the crotch portion 1a, unlike when the left and right wings extend from both ends in the width direction of the absorbent main body. This makes it easier to wear the absorbent article 10 on the shorts 1.

[0067] In addition, since the left and right wings 32 are disposed at different positions from each other in the longitudinal direction, even if the left and right wings 32 are folded along the side edges in the width direction of the crotch portion 1a, the left and right wings 32 can be prevented from overlapping on the non-skin side of the crotch portion 1a. This allows the adhesive layer 40b provided on the left and right wings 32 to function effectively, so that the absorbent body 20 that has absorbed water and swelled can be firmly supported, and the occurrence of slippage and twisting can be suppressed. In addition, it is possible to prevent the shorts 1 from unexpectedly peeling off from the shorts 1 when the shorts 1 are taken off in the toilet.

[0068] Therefore, according to this embodiment, it is possible to provide an absorbent article 10 that can be easily fixed to shorts (undergarments) 1 having various crotch widths and that can be prevented from coming off.

[0069] In addition, by providing a wing fixing portion 31, it is possible to provide left and right wings 32 whose base ends 32a are positioned widthwise inward of the side edges 20c of the absorbent main body 20 with a simple configuration of fixing the wing fixing portion 31 on the widthwise center side of a single wing member 30 to the non-skin side surface 20b of the absorbent main body 20.

[0070] Furthermore, by providing the adhesive layer 40c on the non-skin side of the wing fixing portion 31, the absorbent main body 20 can be more firmly attached to the skin side of the crotch portion 1a of the shorts 1. This makes it possible to further prevent the absorbent article 10 from peeling off and from shifting relative to the shorts 1.

[0071] In this embodiment, wing fixing portion 31 is provided to connect base ends 32a of left and right wings 32, but the present invention is not limited to this, and left and right wings 32 may be provided without providing such wing fixing portion 31. That is, in this embodiment, wing member 30 having wing fixing portion 31 and left and right wings 32 is provided, but the present invention is not limited to this, and it is sufficient to have at least left and right wings 32. When wing fixing portion 31 is not provided, adhesive layer 40 is preferably provided in the region between base ends 32a of left and right wings 32 (region where wing fixing portion 31 of this embodiment is provided).

[0072] In addition, in this embodiment, the base ends 32a of the left and right wings 32 are spaced apart from each other in the width direction, but this is not limited thereto, and it is sufficient that the base ends 32a of the left and right wings 32 are located widthwise inward of the widthwise side edges 20c of the absorbent main body 20. For example, the base ends 32a of the left and right wings 32 may be located at the same position in the width direction (such as the widthwise center of the non-skin side surface 20b of the absorbent main body 20).

[0073] Although the present invention has been described based on the above embodiment, the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention. EXAMPLES

[0074] The present invention will be described below with reference to examples, but the present invention is not limited to these examples in any way.

[0075] Absorbent articles (napkins) of the following Examples 1 to 6 and Comparative Examples 1 to 7 were prepared.

[0076] Example 1 The shape of the wings of the absorbent article of Example 1 (the "Wing Pattern" column in the table; the same applies below) is a shape with one on each side and two on the other, for a total of three left and right wings. The widthwise length of the wing fixing part (the "Wing non-moving range (mm)" column in the table; the same applies below) is 20 mm, and the ratio of this to the widthwise length of the middle region of the absorbent main body (90 mm; the same applies below) (the "Wing non-moving range (%)" column in the table; the same applies below) is 22%. The area of ​​the adhesive layer provided in the outer region of the absorbent main body (the "Main body slip prevention area rate (%)" column in the table; the same applies below, except for Comparative Example 7) is 30% when the area of ​​the outer region is 100%. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing parts (hereinafter referred to as "wing members") (the column "Wing slip prevention area rate (%)" in the table; the same applies below) is 40% of the area of ​​the wing members, which is 100%.

[0077] Example 2 The shape of the wings of the absorbent article of Example 2 is an absorbent article having a pair of left and right wings at different positions in the longitudinal direction. The width direction length of the wing fixing part is 20 mm, which is 22% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 30% of the area of ​​the outer region as 100%. The area of ​​the adhesive layer provided in the left and right wings and the wing fixing part is 40% of the area of ​​the wing member as 100%.

[0078] Example 3 The shape of the wings of the absorbent article of Example 3 is a shape having three wings, one on each side, and two on the other, at different positions in the longitudinal direction. The width direction length of the wing fixing part is 50 mm, which is 55% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 30% of the area of ​​the outer region. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 46% of the area of ​​the wing member taken as 100%.

[0079] Example 4 The shape of the wings of the absorbent article of Example 4 is a shape having one left and right wing on either side and two on the other, a total of three wings at different positions in the longitudinal direction. The width direction length of the wing fixing part is 40 mm, which is 44% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 60% of the area of ​​the outer region as described above. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 40% of the area of ​​the wing member as 100%.

[0080] Example 5 The shape of the wings of the absorbent article of Example 5 is a shape having one on either side and two on the other, a total of three left and right wings at different positions in the longitudinal direction. The width direction length of the wing fixing part is 40 mm, which is 44% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 30% of the area of ​​the outer region as described above. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 70% of the area of ​​the wing member as 100%.

[0081] Example 6 The shape of the wings of the absorbent article of Example 6 is a shape having one on either side and two on the other, a total of three left and right wings at different positions in the longitudinal direction. The width direction length of the wing fixing part is 40 mm, which is 44% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 20% of the area of ​​the outer region as 100%. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 30% of the area of ​​the wing member as 100%.

[0082] Comparative Example 1 The shape of the wings of the absorbent article of Comparative Example 1 is a shape having three wings, one on each side, and two on the other, at different positions in the longitudinal direction. The width direction length of the wing fixing part is 10 mm, which is 11% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 50% of the area of ​​the outer region. The area of ​​the adhesive layer provided in the left and right wings and the wing fixing part is 40% of the area of ​​the wing member is 100%.

[0083] Comparative Example 2 The shape of the wings of the absorbent article of Comparative Example 2 is a shape having three wings, one on each side, and two on the other, at different positions in the longitudinal direction. The width of the wing fixing part is 60 mm, which accounts for 66% of the width of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 50% of the area of ​​the outer region. The area of ​​the adhesive layer provided in the left and right wings and the wing fixing part is 40% of the area of ​​the wing member is 100%.

[0084] Comparative Example 3 The shape of the wings of the absorbent article of Comparative Example 3 is a shape having one left and right wing on either side and two on the other, a total of three wings at different positions in the longitudinal direction. The width direction length of the wing fixing part is 40 mm, which is 44% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 10% of the area of ​​the outer region. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 40% of the area of ​​the wing member taken as 100%.

[0085] Comparative Example 4 The shape of the wings of the absorbent article of Comparative Example 4 is a shape having three wings, one on each side, and two on the other, at different positions in the longitudinal direction. The width direction length of the wing fixing part is 40 mm, which is 44% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 50% of the area of ​​the outer region. The area of ​​the adhesive layer provided on the left and right wings and the wing fixing part is 20% of the area of ​​the wing member taken as 100%.

[0086] Comparative Example 5 The shape of the wings of the absorbent article of Comparative Example 5 is a shape having a pair of left and right wings extending continuously from both ends of the absorbent main body in the width direction outward in the width direction at approximately the same position in the longitudinal direction. That is, no wing fixing part is provided, and the left and right wings extend from both ends of the absorbent main body in the width direction. The width direction length of the region between the base ends of the left and right wings (the column "Wing non-moving range (mm)" in the table) is 90 mm, and the ratio to the width direction length of the middle region of the absorbent main body is 100%. The area of ​​the adhesive layer provided in the outer region of the absorbent main body (the region located on both sides of the left and right wings in the longitudinal direction in Comparative Example 5) is 30% when the area of ​​the outer region is 100%. The area of ​​the adhesive layer provided in the left and right wings and the region between the left and right wings of the absorbent main body (region excluding the outer region) is 30% when the total area of ​​the left and right wings and the region between the left and right wings of the absorbent main body is 100%.

[0087] Comparative Example 6 The shape of the wings of the absorbent article of Comparative Example 6 is an absorbent article having a pair of left and right wings at approximately the same position in the longitudinal direction. The width direction length of the wing fixing part is 50 mm, which is 55% of the width direction length of the middle region of the absorbent main body. The area of ​​the adhesive layer provided in the outer region of the absorbent main body is 50% when the area of ​​the outer region is 100%. The area of ​​the adhesive layer provided on the left and right wings is 27% when the area of ​​the wing member is 100%. Note that no adhesive layer is provided in the wing fixing part of Comparative Example 6.

[0088] Comparative Example 7 No left or right wings are provided in the absorbent article of Comparative Example 7. The column for "Main body slip prevention area ratio (%)" of Comparative Example 7 shows the percentage of the adhesive layer provided on the non-skin side of the absorbent body when the entire non-skin side of the absorbent body is taken as 100%, and this value is 30%.

[0089] The absorbent articles obtained as described above were evaluated for the following four items (peel strength, ease of wearing, resistance to slippage, and the presence or absence of deformation of the absorbent main body).

[0090] (peel strength) The peel strength is the peel strength of the absorbent article against the cotton shorts (underwear), and was measured as follows. First, the adhesive layer on the non-skin side of the absorbent body of the prepared absorbent article is lightly attached to the skin side of the cotton shorts, and the wings are folded to lightly attach the adhesive layer of the wings to the non-skin side of the cotton shorts. Next, a roller weighing 2 kg is moved back and forth once over the entire absorbent body from above the absorbent body to apply a load, and the absorbent article is attached to the cotton shorts. Next, the distance between the chucks of the Tensilon type tensile tester is set to 50 mm, one end of the absorbent body in the longitudinal direction is attached to one chuck, and one end of the cotton shorts is attached to the other chuck, and the material is pulled at a speed of 300 mm / min and a tensile direction of 180 degrees, and the average value of the maximum point load is measured as the peel strength. The stronger the peel strength, the more difficult it is to peel off and to shift.

[0091] (Ease of installation) Ease of wearing was a sensory evaluation of the ease of wearing the absorbent article in shorts, and 10 female monitors in their 20s to 50s were asked to use each absorbent article and rate the ease of wearing the absorbent article in shorts using the following scale: "Difficult to wear: 0 points, Neutral: 1 point, Easy to wear: 2 points." Then, based on the total score of each absorbent article, evaluation was performed according to the following criteria. ◎: 15 points or more and 20 points or less ○: 10 points or more and 14 points or less ×: 0 points or more and 9 points or less

[0092] (Difficult to slip) The resistance to slipping was a sensory evaluation of the resistance of the absorbent article to slipping while in use. Ten female monitors in their 20s to 50s were asked to wear each absorbent article and, after engaging in their daily activities (daily life) for 7 hours, they were asked to evaluate whether the absorbent article "slipped" or "did not slip", and the results were calculated according to the following criteria. ◎: 0 to 3 people rated "off" ○: 4 to 5 people rated "off" ×: 6 to 10 people rated "off"

[0093] (Whether or not the absorbent body is deformed) The presence or absence of deformation of the absorbent main body was evaluated by observing the state of the absorbent main body when the absorbent article was attached to the shorts, and judging according to the following criteria as "deformed" or "not deformed". "No deformation": The absorbent body does not unnaturally curl or ripple and remains flat. "Deformed": The absorbent body is pulled by the wings, rolled up or wavy under the crotch, and does not remain flat.

[0094] The results obtained are shown in Table 1.

[0095] [Table 1]

[0096] From the above, it was confirmed that the absorbent article of the present invention can be easily fixed to underwear of various crotch widths and is not easily peeled off. [Explanation of symbols]

[0097] 1: Shorts (underwear) 10: Absorbent articles 20: Absorbent body 21: Top sheet 22: Back seat 23: Absorbent 24: Middle area 25:Outer area 31: Wing fixing part 32: Left and right wings 40: Adhesive layer 41,42: Non-adhesive area

Claims

1. an absorbent body having a liquid-permeable top sheet on the skin side, a liquid-impermeable back sheet on the non-skin side, and an absorbent body located between the top sheet and the back sheet, the absorbent body being long in a first direction and short in a second direction intersecting the first direction; left and right wings that are disposed on both sides in the second direction of the non-skin side of the absorbent body, extend from base ends located on the inside of the side edges of the absorbent body in the second direction to outside the side edges in the second direction, and are tiltable about the base ends as axes; An adhesive layer capable of attaching the absorbent body to an attachment target, The non-skin side of the absorbent body has a middle region located at the middle in the first direction and in which the left and right wings are provided, and outer regions on both sides of the middle region in the first direction, The left and right wings are disposed at different positions in the first direction, The adhesive layer is provided at least on both outer regions of the non-skin side of the absorbent body in the first direction and on the non-skin side of the left and right wings. An absorbent article characterized by:

2. The base ends of the left and right wings are spaced apart from each other in the second direction, A wing fixing portion is provided between the base ends of the left and right wings to connect the base ends of the left and right wings to fix the left and right wings to the non-skin side of the absorbent body, The adhesive layer is also provided on the non-skin side of the wing fixing portion.

2. The absorbent article according to claim 1.

3. The length of the wing fixing portion in the second direction is 20 mm or more and 50 mm or less, and is 20% or more and 60% or less of the length of the absorbent body in the second direction.

3. The absorbent article according to claim 2.

4. The areas of the non-skin side of the absorbent body that overlap with the left and right wings are non-adhesive areas where the adhesive layer is not provided.

3. The absorbent article according to claim 1 or 2.

5. The adhesive layer is made of a hot melt adhesive, Of the left and right wings, a region extending from one wing located closest to one side in the first direction to the one side by 5 mm to 10 mm and a region extending from the other wing located closest to the other side in the first direction to the other side by 5 mm to 10 mm are non-adhesive regions where the adhesive layer is not provided.

3. The absorbent article according to claim 1 or 2.

6. an area of ​​the adhesive layer provided in the outer region on both sides of the non-skin side of the absorbent body in the first direction is 20% or more and 60% or less when the area of ​​the outer region of the absorbent body is 100%, The area of ​​the adhesive layer provided on the left and right wings and the wing fixing portion is 30% or more and 70% or less when the area of ​​the left and right wings and the wing fixing portion is 100%.

3. The absorbent article according to claim 2.

7. The distance in the longitudinal direction between the end of the absorbent body in the first direction and one of the left and right wings that is located closest to the end of the absorbent body is 50 mm or more and 100 mm or less.

3. The absorbent article according to claim 1 or 2.

8. The length in the second direction of the central portion in the first direction of the absorbent body is 30 mm or more and 150 mm or less.

3. The absorbent article according to claim 1 or 2.

9. The length in the second direction from the tip of one of the left and right wings to the tip of the other wing is longer than the length of the absorbent body in the second direction by 20 mm or more and 70 mm or less, The length of the wing fixing portion in the first direction is equal to or greater than 30 mm and equal to or less than 120 mm.

3. The absorbent article according to claim 2.

10. The length of the left and right wings in the first direction is 10 mm or more and 50 mm or less.

3. The absorbent article according to claim 1 or 2.

Images