Absorbent article

Abstract

To provide an absorbent article which can suppress leakage and can be easily detached from an underwear after use of the article.SOLUTION: An absorbent article 10 comprises: an absorbent body 20 which has a skin side top sheet, a non-skin side back sheet 22, and an absorber arranged between the top sheet and the back sheet 22, the absorbent body extending in a longer direction; four wings 30 which protrude outward in the longer direction and in a width direction from both ends of the absorbent body 20 in the longer direction, and protrude in a direction inclined to the longer direction; and an adhesive layer 40 which is provided on non-skin side surfaces of the absorbent body 20 and the four wings 30. The non-skin side surface of the absorbent body 20 has: a non-adhesive region 25 including a center in the longer direction of the absorbent main body 20 and having no adhesive layer 40; and adhesive regions 26 provided on both sides in the longer direction of the non-adhesive region 25 and having the adhesive layer 40.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] In recent years, women are being encouraged to work after raising children in order to secure the workforce. Employment is also being extended due to the aging of society as a whole. Due to the structure of their bodies, many women experience a small amount of incontinence when they put pressure on their stomachs, such as when they sneeze. This symptom can become more pronounced after childbirth or with age, and many female workers are troubled by stains on their underwear (pants, etc.) due to minute urine leakage. One way to deal with urinary leakage is to wear a compact light incontinence liner in their underwear, which is designed for people with mild urinary leakage. Many of these light incontinence liners also function as panty liners.

[0003] These products have an adhesive part to prevent slippage and attach them to underwear, but with relatively small products, the entire product is strongly pressed against the underwear when body pressure is applied, such as when sitting, and the adhesive part to prevent slippage may stick firmly to the underwear and become impossible to remove. This problem can be solved by making the product larger, but wearing a product with excessive absorption capacity for mild incontinence symptoms is economically expensive, and since a smaller product would suffice, the comfort of wearing it would be compromised.

[0004] There are also products with wings, but these attach to the crotch (groin) area of ​​the underwear and become one with it, so when body pressure is applied to the absorbent core, the adhesive part of the wings that prevents slipping is also subjected to body pressure, which also tends to cause the adhesive strength to become excessively strong and make them difficult to remove.

[0005] Examples of absorbent articles that are designed to be easy to remove include the following.

[0006] Patent Document 1 discloses an auxiliary sheet for absorbent articles that is attached to underwear and that is used by attaching an absorbent article to the surface facing the user. The auxiliary sheet is provided with a peel-off treatment part (a material such as a film without an adhesive part) at a position corresponding to the anti-slip adhesive part of the absorbent article, making it easy to peel off.

[0007] Patent Document 2 also discloses an absorbent article such as a sanitary napkin. The absorbent article has left and right wings (first and second wings) that can be folded back toward the underwear when the absorbent article is worn. An adhesive portion is provided on the non-skin side of the left and right wings before they are folded back. An easy peelable area is formed on the skin side of the first wing before it is folded back. When the absorbent article is worn, the first wing is folded back so that the adhesive portion of the first wing is bonded to the underwear. After that, when the second wing is further folded back so as to overlap the first wing, the adhesive portion of the second wing faces the easy peelable area of ​​the first wing (such as a release agent layer coated with silicone resin or fluororesin). This makes it easy to peel off the absorbent article. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2004-290546 A [Patent Document 2] Patent Publication No. 2022-85587 Summary of the Invention [Problem to be solved by the invention]

[0009] However, the auxiliary sheet described in Patent Document 1 is a separate component from the absorbent article, and it is necessary to align the two and attach them in place, making the operation of putting it on cumbersome and not sufficiently considerate of workers who are short on time.

[0010] In addition, in the absorbent article described in Patent Document 2, since the absorbent article main body (hereinafter referred to as the "absorbent article main body") is not provided with a slip-stop adhesive portion, when the absorbent article main body moves in accordance with the crotch portion of the underwear, a physical load is generated between the absorbent article main body and the fixed portion of the wing, which may cause the absorbent article main body to deform and twist. Even if the absorbent article main body is provided with a slip-stop adhesive portion, if the adhesive strength is weak, the absorbent article main body moves in accordance with the crotch portion of the underwear, which may cause the slip-stop adhesive portion of the absorbent article main body to partially peel off from the underwear side, and as described above, a physical load is generated between the fixed portion of the wing, which may cause the absorbent article main body to deform and twist. If twisting occurs, there is a risk of urine leakage. On the other hand, if the slip-stop adhesive portion of the absorbent article main body has an adhesive strength, the adhesive strength increases due to body pressure, which may make it difficult to remove from the underwear.

[0011] Therefore, an object of the present disclosure is to provide an absorbent article that can prevent leakage and can be easily peeled off from underwear after use. [Means for solving the problem]

[0012] In order to solve the above problems, the absorbent article of a first aspect of the present invention has a skin-side top sheet, a non-skin-side back sheet, and an absorbent body arranged between the top sheet and the back sheet, and is provided with an absorbent main body extending in the longitudinal direction, four wings protruding from both longitudinal ends of the absorbent main body toward the longitudinal and widthwise outer sides in a direction inclined with respect to the longitudinal direction, and an adhesive layer provided on the non-skin side of the absorbent main body and the four wings, and the non-skin side of the absorbent main body has a non-adhesive region including the longitudinal centre of the absorbent main body where the adhesive layer is not provided, and adhesive regions located on both longitudinal sides of the non-adhesive region where the adhesive layer is provided.

[0013] A second aspect of the present invention is an absorbent article of the first aspect described above, wherein the longitudinal length of the absorbent article is 160 mm or more and 220 mm or less, the longitudinal length of the absorbent body of the absorbent main body is 100 mm or more and 160 mm or less, and the widthwise length of the absorbent body of the absorbent main body is 40 mm or more and 65 mm or less.

[0014] A third aspect of the present invention is an absorbent article of the first aspect or the second aspect, wherein the longitudinal length of the non-adhesive region of the absorbent main body is 20% or more and 40% or less of the longitudinal length of the absorbent body of the absorbent body, taken as 100%.

[0015] A fourth aspect of the present invention is an absorbent article of the first aspect or the second aspect, wherein the four wings have an axisymmetric shape centered on a wing center line that is inclined relative to the longitudinal direction, and the inclination angle of the wing center line relative to the longitudinal direction is greater than or equal to 30 degrees and less than or equal to 45 degrees.

[0016] A fifth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the four wings have an axisymmetric shape centered on a wing center line that is inclined relative to the longitudinal direction, the adhesive layer includes a main body adhesive layer provided in the adhesive region of the absorbent main body, and a wing adhesive layer extending continuously from the main body adhesive layer to the four wings, and the maximum length of the wing adhesive layer along the wing center line is 30 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 prevent leakage and can be easily peeled off from underwear after use. [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] FIG. 2 is an explanatory diagram of the absorbent article in a state where it is worn undergarments. 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 underwear (shorts, etc.) with an absorbent article attached is 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 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 inner side in the longitudinal direction means a direction toward the center in the longitudinal direction, and the outer side in the longitudinal direction means a direction away from the center in the longitudinal direction. In addition, the width 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. The inside of the width direction is the direction toward the center of the width direction, and the outside of the width direction is the direction away from the center of the width direction. The thickness direction of each component of the absorbent article refers to the direction in which each component is stacked, and is the direction that intersects (is perpendicular to) both the longitudinal direction and the width direction, and is the direction along the arrow Z in the figure. The "skin side" refers to the direction toward the wearer's body when the absorbent article is worn in the thickness direction, and the "non-skin side" refers to the direction opposite to the skin side in the thickness direction. Body fluids refer to liquids discharged from the body to the outside, such as urine, blood, and water in loose stools.

[0021] (Absorbent articles) Fig. 1 is a plan view of an absorbent article according to one embodiment of the present invention, seen from the skin side. Fig. 2 is a plan view of the absorbent article of Fig. 1, seen from the non-skin side. Fig. 3 is a cross-sectional view taken along the line III-III in Fig. 1. Fig. 4 is an explanatory diagram of the absorbent article in a state of being worn undergarments. 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 (see FIG. 4) of an undergarment 1 such as shorts when in use. Examples of the absorbent article 10 include light incontinence liners and sanitary napkins, and among these, light incontinence liners are preferred.

[0023] As shown in Figures 1 to 3, the absorbent article 10 comprises an absorbent main body 20 that mainly absorbs and retains bodily fluids, four wings 30 that prevent the absorbent main body 20 from shifting relative to the underwear 1 (see Figure 4), and an adhesive layer 40 provided on the non-skin side 10a of the absorbent article 10. (Longitudinal dimension of absorbent article)

[0024] The longitudinal length L1 of the absorbent article 10 is preferably 160 mm or more and 220 mm or less. By setting the longitudinal length L1 of the absorbent article 10 within the above range, an absorbent article 10 suitable for pad products such as light incontinence products, sanitary napkins, and panty liners can be obtained.

[0025] (Absorbent body) 1 to 3, the absorbent main body 20 has a liquid-permeable top sheet 21 on the skin side, a liquid-impermeable back sheet 22 on the non-skin side, and an absorbent body 23 disposed between the top sheet 21 and the back sheet 22, and extends in the longitudinal direction (X direction). In addition to the top sheet 21, the back sheet 22, and the absorbent body 23, the absorbent main body 20 of this embodiment has three-dimensional gathers 24 provided on both sides in the width direction (Y direction) on the skin side. The absorbent article 10 may have other members (for example, a cover sheet that wraps the absorbent body 23, etc.).

[0026] The absorbent body 20 is a part of the absorbent article 10 that has the shape of a general absorbent article without wings and mainly absorbs and retains bodily fluids. That is, the absorbent body 20 is a region of the absorbent article 10 excluding the protruding parts (wings 30). The shape of the absorbent body 20 is not particularly limited, but may be, for example, an hourglass shape, a substantially rectangular shape, an oval shape, etc., which are symmetrical in the width direction, as in the shape of a general absorbent article without wings. For example, in this embodiment, as shown by the two-dot chain line a in Figs. 1 and 2, the shape of the absorbent body 20 is an oval shape that is symmetrical in the width direction in accordance with the shape of the absorbent body 23. In Fig. 1, the center line of the absorbent body 20 in the width direction is shown by the one-dot chain line CL.

[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 fibers are not particularly limited as long as they are generally used in absorbent articles such as sanitary napkins, paper diapers, light incontinence liners, 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 fibers, resin fibers, non-wood pulp, etc. that have been defibrated into a cotton-like state. Examples of liquid absorbent sheets 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] (Absorbent dimensions) The length L2 in the longitudinal direction of the absorbent body 23 of the absorbent main body 20 is preferably 100 mm or more and 160 mm or less. If the length L2 in the longitudinal direction of the absorbent body 23 is shorter than 100 mm, leakage may occur and a sufficient amount of absorption may not be ensured. On the other hand, if the length L2 in the longitudinal direction of the absorbent body 23 is longer than 160 mm, the absorbent article 10 of the present application, which is suitable for mild incontinence, i.e., a small amount of urine leakage, becomes too long unnecessarily, which may make the absorbent article economically expensive and may also impair comfort when worn.

[0036] The widthwise length W of the absorbent body 23 of the absorbent main body 20 is preferably 40 mm or more and 65 mm or less. If the widthwise length W of the absorbent body 23 is shorter than 40 mm, leakage may occur and a sufficient amount of absorption may not be ensured. On the other hand, if the widthwise length W of the absorbent body 23 is longer than 65 mm, it becomes longer than necessary for the absorbent article 10 of the present application, which is suitable for mild incontinence, i.e., a small amount of urine leakage, and may be economically expensive and may also be less comfortable to wear.

[0037] (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.

[0038] (3D gathers) 1, the left and right three-dimensional gathers 24 are provided on both the left and right sides of the skin side surface 10b of the absorbent article 10 in order to prevent side leakage, etc., of bodily fluids excreted by the wearer. The three-dimensional gathers 24 are provided to extend along the longitudinal direction at both widthwise ends of the skin side surface of the top sheet 21. The three-dimensional gathers 24 include a water-repellent and / or waterproof gathered sheet 24a, and an elastic stretchable member (not shown) such as rubber thread that is provided on the free end side (inner end side in the widthwise direction) of the gathered sheet 24a and provides it with standing ability.

[0039] (wing) As shown in Figs. 1 and 2, the four wings 30 are members that enable the absorbent body 20 to be attached to the crotch portion 1a (see Fig. 4) of the underwear 1 and prevent the absorbent body 20 attached to the underwear 1 from shifting. The four wings 30 are formed in a sheet shape protruding from the absorbent body 20 in a direction intersecting the thickness direction. The four wings 30 protrude from both ends of the absorbent body 20 in the longitudinal direction toward the outside in the longitudinal direction and the outside in the width direction in a direction inclined with respect to the longitudinal direction. The four wings 30 of this embodiment have a shape that is line-symmetrical with respect to the wing center line CLw that is inclined with respect to the longitudinal direction. That is, the protruding direction of the four wings 30 of this embodiment is a direction along the wing center line CLw of the wings 30. The shape of the four wings 30 is not limited to a shape that is line-symmetrical with respect to a predetermined axis.

[0040] Examples of the base material of the four wings 30 include a nonwoven fabric, a resin film, a composite sheet which is a laminate of a resin film and a nonwoven fabric, etc. For example, the four wings 30 may be configured to include at least one of the top sheet 21 and the back sheet 22 which extend continuously from the absorbent main body 20, or may be configured of a sheet different from the top sheet 21 and the back sheet 22.

[0041] (Tilt angle) As shown in FIG. 1, the inclination angle θ of the wing center line CLw of the four wings 30 with respect to the longitudinal direction (for example, the center line CL in the width direction of the absorbent body 20 in the figure) (hereinafter, sometimes simply referred to as the "inclination angle θ of the wing 30") is preferably 30 degrees or more and 45 degrees or less. If the inclination angle θ of the wing 30 is made smaller than 30 degrees, the inclination angle θ of the wing 30 may be too small, and the wing adhesive layer 42 described below may not be able to avoid body pressure, and the adhesive layer 40 tends to adhere firmly to the underwear 1. On the other hand, if the inclination angle θ of the wing 30 is made larger than 45 degrees, the inclination angle θ of the wing 30 is too large, making the operation at the time of putting on the underwear 1 complicated, and the wing adhesive layer 42 described below may easily adhere to an unintended position. The inclination angle θ of the four wings 30 with respect to the longitudinal direction means the inclination angle formed by the center line CL of the absorbent main body 20 and the wing center line CLw at the longitudinal front end or rear end of the absorbent article 10. In this embodiment, the left and right wings 30 at the front end or rear end of the absorbent article 10 are provided symmetrically on the left and right of the absorbent article 10, and the inclination angles θ of the left and right wings 30 are the same.

[0042] (Adhesive layer) As shown in Figures 2 and 3, the adhesive layer 40 is an anti-slip adhesive layer that attaches the absorbent article 10 to the underwear 1 (see Figure 4) and prevents the absorbent main body 20 from slipping relative to the underwear 1, and is provided on the non-skin sides of the absorbent main body 20 and the four wings 30.

[0043] 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 of the absorbent body 20 and the four wings 30. Note that 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.

[0044] As shown in FIG. 2, the adhesive layer 40 includes a main body adhesive layer 41 provided on the absorbent body 20, and a wing adhesive layer 42 extending continuously from the main body adhesive layer 41 to the four wings 30. The main body adhesive layer 41 is an adhesive layer (an adhesive layer having an outer edge indicated by a two-dot chain line b in the figure) provided on an absorbent article without wings 30 (an absorbent article having an outer edge indicated by a two-dot chain line a in the figure) among the adhesive layers 40 provided on the absorbent body 20. On the other hand, the wing adhesive layer 42 is an adhesive layer (an adhesive layer located on the tip side of the wing 30 from the two-dot chain line b in the figure) additionally provided when wings 30 are provided on an absorbent article without wings 30 as described above. In this embodiment, the wing adhesive layer 42 is provided in a manner extending continuously from the main body adhesive layer 41, but is not limited thereto, and the wing adhesive layer 42 may be provided in a manner spaced apart from the main body adhesive layer 41.

[0045] (Main body adhesive layer) The main body adhesive layer 41 is not provided in the longitudinal center of the absorbent main body 20, but is provided on both sides in the longitudinal direction, spaced apart from each other. That is, the non-skin side of the absorbent main body 20 has a non-adhesive region 25 located at the longitudinal center where the adhesive layer 40 is not provided, and adhesive regions 26 located on both longitudinal sides of the non-adhesive region 25 where the adhesive layer 40 is provided. The non-adhesive region 25 is a region including the longitudinal center of the absorbent main body 20 (the position indicated by the dashed dotted line c in the figure). The back sheet 22 is exposed in the non-adhesive region 25.

[0046] The length L3 in the longitudinal direction of the non-adhesive region 25 of the absorbent body 20 is preferably 20% or more and 40% or less of the length L2 in the longitudinal direction of the absorbent body 23 of the absorbent body 20, which is 100%. If the length L3 in the longitudinal direction of the non-adhesive region 25 is shorter than 20% of the length L2 in the longitudinal direction of the absorbent body 23, the absorbent body 20 may be firmly attached to the underwear when body pressure is applied to the absorbent body 20 during wearing, and may be difficult to remove. On the other hand, if the length L3 in the longitudinal direction of the non-adhesive region 25 is longer than 40% of the length L2 in the longitudinal direction of the absorbent body 23, the absorbent body 20 may be easily moved relative to the underwear 1 during wearing, and may be twisted.

[0047] (Wing adhesive layer) The wing adhesive layer 42 protrudes from the main body adhesive layer 41 along the protruding direction of the wing 30. The wing adhesive layer 42 of this embodiment is formed substantially line-symmetrically with respect to the wing center line CLw of the wing 30. The shape of the wing adhesive layer 42 is not limited to a shape that is line-symmetric with respect to a predetermined axis.

[0048] (Wing adhesive layer length) The maximum length L4 of the wing adhesive layer 42 along the wing center line CLw (hereinafter simply referred to as "length L4 of the wing adhesive layer 42") is preferably 30 mm or more and 50 mm or less. If the length L4 of the wing adhesive layer 42 is shorter than 30 mm, the wing adhesive layer 42 is too short, making it difficult to fold the wing 30 back and attach it to the underwear 1 when wearing it on the underwear 1. On the other hand, if the length L4 of the wing adhesive layer 42 is longer than 50 mm, the wing 30 itself becomes too long, making wearing operation complicated. Note that the maximum length L4 of the wing adhesive layer 42 along the wing center line CLw means the longest length along the wing center line between the point of the wing adhesive layer 42 closest to the main body adhesive layer 41 along the direction of the wing center line CLw (p1 in FIG. 2) and the point closest to the tip of the wing 30 (p2 in FIG. 2).

[0049] (How to use) Next, a description will be given of an example of the case where the absorbent article 10 is attached to the underwear 1. Note that the method of attaching the absorbent article 10 is not limited to the following.

[0050] As shown in FIG. 4, when the absorbent article 10 is attached to the underwear 1, the absorbent main body 20 is placed on the skin side of the crotch portion 1a of the underwear 1, and the main body adhesive layer 41 (see FIG. 3) of the front and rear adhesive regions 26 of the non-skin side of the absorbent main body 20 is fastened to the skin side of the crotch portion 1a. Next, the left and right wings 30 protruding outward from the left and right leg openings 2 of the underwear 1 are folded toward the non-skin side along the edges of the leg openings 2 and folded back inward in the width direction, and the wing adhesive layer 42 of the left and right wings 30 is fastened to the non-skin side of the underwear 1. As shown in FIG. 4, it is preferable to fold back the left and right wings 30 located on the front side in the width direction and fasten them to the non-skin side of the front body 1b of the underwear 1, and it is preferable to fasten the left and right wings 30 located on the rear side to the skin side of the rear body 1c of the underwear 1. In this manner, the absorbent article 10 can be attached to the underwear 1.

[0051] In the absorbent article 10 configured as described above, the four wings 30 protrude from both longitudinal ends of the absorbent main body 20 toward the longitudinal and widthwise outer sides in a direction inclined with respect to the longitudinal direction. This allows the adhesion positions of the four wings 30 to the underwear 1 to be located forward or backward from the adhesion position of the absorbent main body 20. This allows the adhesion positions of the four wings 30 to be located in positions where body pressure is less likely to be applied, making it easy to peel off the wing adhesive layers 42 of the four wings 30 from the underwear 1 after use.

[0052] In addition, the non-skin side of the absorbent main body 20 has a non-adhesive region 25 that includes the longitudinal center of the absorbent main body 20 and where the adhesive layer 40 is not provided. Therefore, the non-adhesive region 25 in the longitudinal central portion of the absorbent main body 20 is not fastened to the underwear 1, making it easy to peel the absorbent main body 20 from the underwear 1 after use. In addition, the non-adhesive region 25 of the absorbent main body 20 can be used as a starting point for peeling the absorbent main body 20 from the underwear 1, improving the ease of peeling after use.

[0053] In addition, the non-skin side of the absorbent body 20 has adhesive regions 26 located on both sides of the non-adhesive region 25 in the longitudinal direction and provided with an adhesive layer 40 (main body adhesive layer 41). Therefore, when the absorbent article 10 is attached to the underwear 1, both front and rear sides of the absorbent body 20 are fastened to the underwear 1, and the middle part in the front-rear direction (longitudinal direction) is free relative to the underwear 1. In this way, the absorbent body 20 can be attached to the underwear 1 like a hammock with both front and rear ends supported by the underwear 1, so that even if the crotch part 1a of the underwear 1 is displaced in the left-right direction relative to the private parts from which urination occurs, the absorbent body 20 can be made to follow the private parts. Therefore, it becomes easier to maintain the adhesion of the absorbent body 20 to the private parts, so that leakage (urine leakage) can be suppressed and the underwear 1 is less likely to be stained.

[0054] Thus, according to this embodiment, it is possible to provide an absorbent article 10 that can prevent leakage and can be easily peeled off from the underwear 1 after use.

[0055] Furthermore, by setting the length L4 of the wing adhesive layer 42 to 30 mm or more and 50 mm or less, it is possible to obtain an absorbent article 10 that can alleviate body pressure while avoiding complicated attachment, that is less likely to cause the absorbent body 20 to twist even when the body position is changed, that has high conformability to private parts, that can suppress stains, and that is easy to wear and use, while providing the absorbent article 10.

[0056] In this embodiment, the three-dimensional gathers 24 are provided, but the three-dimensional gathers 24 do not necessarily have to be provided.

[0057] In addition, in this embodiment, the four wings 30 are not provided with an absorbent body, but this is not limiting and the four wings 30 may be provided with an absorbent body.

[0058] 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. [Explanation of symbols]

[0059] 10: Absorbent articles 20: Absorbent body 21: Top sheet 22: Back seat 23: Absorbent 25: Non-adhesive area 26: Adhesive area 30: Four Wings 40:Adhesive layer 41: Main body adhesive layer 42: Wing adhesive layer

Claims

1. an absorbent body having a skin-side top sheet, a non-skin-side back sheet, and an absorbent body disposed between the top sheet and the back sheet, the absorbent body extending in a longitudinal direction; Four wings protruding from both ends of the absorbent body in the longitudinal direction toward the outside in the longitudinal direction and the outside in the width direction in a direction inclined with respect to the longitudinal direction; and an adhesive layer provided on the non-skin side of the absorbent body and the four wings, The non-skin side of the absorbent body has a non-adhesive region including the center in the longitudinal direction of the absorbent body where the adhesive layer is not provided, and adhesive regions located on both sides in the longitudinal direction of the non-adhesive region and where the adhesive layer is provided. An absorbent article characterized by:

2. The length of the absorbent article in the longitudinal direction is 160 mm or more and 220 mm or less, The length of the absorbent body in the longitudinal direction is 100 mm or more and 160 mm or less, The length of the absorbent body in the width direction is 40 mm or more and 65 mm or less.

2. The absorbent article according to claim 1.

3. The length in the longitudinal direction of the non-adhesive region of the absorbent body is 20% or more and 40% or less of the length in the longitudinal direction of the absorbent body of the absorbent body, where the length is 100%.

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

4. The four wings have a shape that is symmetrical about a wing center line that is inclined with respect to the longitudinal direction, The inclination angle of the wing center line with respect to the longitudinal direction is 30 degrees or more and 45 degrees or less.

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

5. The four wings have a shape that is symmetrical about a wing center line that is inclined with respect to the longitudinal direction, The adhesive layer includes a main body adhesive layer provided in the adhesive region of the absorbent body, and a wing adhesive layer extending continuously from the main body adhesive layer to the four wings, The maximum length of the wing adhesive layer along the wing center line is 30 mm or more and 50 mm or less.

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

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