KR20230010665A - absorbent article - Google Patents

Abstract

INDUSTRIAL APPLICABILITY The present invention improves wearing comfort in an absorbent article used continuously for a long time. The absorbent article includes an absorbent core 31 that absorbs body fluids, a topsheet 10 having absorbent fibers disposed on the skin side of the absorbent core, and a liquid impervious bag disposed on the non-skin side of the absorbent core. prepare a sheet The sweat transfer value, which indicates the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article, is the weight of sweat transferred to the absorbent article after 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet. Regarding the ratio of , when the sweat transfer value is measured twice in succession, the second sweat transfer value is higher than the first sweat transfer value.

Description

absorbent article

The present invention relates to an absorbent article having a topsheet comprising absorbent fibers.

Patent Literature 1 discloses an absorbent article having cotton fibers as absorbent fibers in a topsheet. A water repellent agent is applied to the top sheet of Patent Literature 1. The absorbent article of Patent Literature 1 is structured so as to be able to achieve both improvement in texture by cotton fibers and suppression of rewet, in which absorbed excreted fluid returns to the surface side of the topsheet.

Japanese Patent Laid-Open No. 2010-269029

[0003] A topsheet containing cotton fibers has a problem in that, while being able to improve the feel, the topsheet itself has high liquid retaining properties and tends to leave a sticky feeling on the surface. In particular, since absorbent articles such as sanitary pads and exudate sheets adhere to the skin through the wearable articles, the sticky feeling of the topsheet is remarkably felt in some cases. In addition, some absorbent articles may be used continuously for a long time, and further improvement in wearing comfort is required.

An absorbent article according to one aspect includes: an absorbent core for absorbing body fluids, a top sheet having absorbent fibers disposed on the skin side of the absorbent core, and a topsheet disposed on the non-skin side of the absorbent core; A permeable back sheet is provided. A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet Regarding the perspiration weight ratio, the second sweat transfer value when the sweat transfer value is measured twice consecutively is higher than the first sweat transfer value.

An absorbent article according to another aspect includes: an absorbent core for absorbing body fluids, a topsheet disposed on the skin side of the absorbent core and having absorbent fibers, and a liquid impervious bag disposed on the non-skin side of the absorbent core. prepare a sheet A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet When defined as a ratio of sweat weight, the first sweat transfer value is 0.43 or more. In the first measurement of the sweat transfer value, the ratio of the weight of sweat transferred to the absorbent article to the weight of sweat transferred to the skin side of the topsheet is 0.22 or less.

Fig. 1 is a plan view of an absorbent article according to a first embodiment seen from the skin side.
Fig. 2 is a plan view of the absorbent article according to the first embodiment seen from the non-skin surface side.
Fig. 3 is a cross-sectional view taken along line AA shown in Fig. 1 .
Fig. 4 is a diagram showing the bonding area of the top sheet.
Fig. 5 is a plan view of the absorbent article according to the second embodiment in a deployed state.
6 is a schematic cross-sectional view of a laminated sheet.

(1) Outline of Embodiments

From the description of this specification and accompanying drawings, at least the following matters become clear.

An absorbent article according to one aspect includes: an absorbent core for absorbing body fluids, a topsheet disposed on the skin side of the absorbent core and having absorbent fibers, and a liquid impermeable bag disposed on the non-skin side of the absorbent core. prepare a sheet A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet Regarding the perspiration weight ratio, the second sweat transfer value when the sweat transfer value is measured twice consecutively is higher than the first sweat transfer value. According to this aspect, the power to draw in sweat discharged on the top sheet is higher in the second time than in the first time, and it is possible to continuously introduce sweat. In addition to improving the touch by using absorbent fibers such as cotton fibers for the topsheet, the sticky feeling caused by continuously drawing in sweat can be suppressed, and the wearing feeling can be further improved.

According to a preferred aspect, the first sweat transfer value is 0.43 or more. According to this aspect, since the first sweat transfer value is 0.43 or more and the sweat draw-in property is high, the sticky feeling caused by the draw-in of sweat can be suppressed, and the wearing feeling can be further improved.

According to a preferred aspect, the ratio of the weight of sweat that has returned to the skin side of the topsheet to the weight of sweat that has transferred to the absorbent article in the second measurement of the sweat transfer value is 0.22 or less. According to this aspect, it is possible to suppress liquid return of perspiration once taken in. By suppressing the rewet, the wearing feeling can be further improved.

An absorbent article according to another aspect includes: an absorbent core for absorbing body fluids, a topsheet disposed on the skin side of the absorbent core and having absorbent fibers, and a liquid impervious bag disposed on the non-skin side of the absorbent core. prepare a sheet A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet Regarding the weight ratio of sweat, the first sweat transfer value is 0.43 or more, and the weight of the sweat transferred to the absorbent article in the measurement of the first sweat transfer value is the amount returned to the skin side of the topsheet. The weight ratio of sweat is 0.22 or less. Since the first sweat transfer value is 0.43 or more and the sweat pull-in property is high, the sticky feeling caused by the draw-in of sweat can be suppressed, and the wearing feeling can be further improved. Moreover, it is possible to suppress the liquid return of perspiration once taken in. By suppressing the rewet, the wearing feeling can be further improved.

According to a preferred aspect, when the sweat transfer value is measured twice consecutively, the second sweat transfer value is 0.49 or more. According to this aspect, since the second sweat transfer value is 0.49 or more and the sweat draw-in property is high, the sticky feeling caused by the draw-in of sweat can be suppressed, and the wearing feeling can be further improved.

According to a preferred aspect, a plurality of bending starting point portions serving as starting points for bending the absorbent article are provided in the core arrangement region where the absorbent core is disposed, and the plurality of bending starting point portions are spaced apart in the front-back direction. It is installed, and the widest interval among the intervals between the bending starting points is 20 mm or less. According to this aspect, in the core arrangement region, an absorbent core having relatively high rigidity is disposed in the absorbent article, and there is a concern that it is difficult to conform to the body. However, since the bending starting point portion is provided, it is easy to deform through the bending starting point portion. The widest interval among the intervals of the bending starting points is 20 mm or less, and since the bending starting points are arranged at relatively short intervals, it is easy to make the absorbent article conform to the body in the cross section along the front-back direction. By positioning the absorbent article along the body, it is easy to bring the topsheet against the body over the entirety of the absorbent article. It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved.

According to a preferred aspect, an adhesive region coated with an adhesive is provided on the non-skin surface of the top sheet, the adhesive region is provided at intervals in the front-back direction, and the average interval between the adhesive regions is, It is less than the widest interval among the intervals of the bending starting point. According to this aspect, in the bonding area, since the top sheet is adhered to the member located on the non-skin surface side, the top sheet is prevented from floating and is easily disposed along the body along with the absorbent core. Since the average interval between the bonding regions is equal to or less than the widest interval among the intervals between the starting points for bending, the topsheet can be made to follow the body together with the absorbent core within the widest interval between the starting points for bending, so that the entire absorbent article is covered. It is easy to make the top sheet abut against the body. It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved.

According to a preferred aspect, an adhesive portion for bonding the absorbent article to a wearable article is provided on the non-skin surface of the absorbent article, the adhesive portion is provided at intervals in the front-back direction, and the adhesive regions The average interval is less than or equal to the widest interval among the intervals of the bending starting point. According to this aspect, in the adhesive portion, since the absorbent article is joined to the wearable article, the absorbent article is easily disposed along the body. Since the average interval between the adhesive portions is equal to or less than the widest interval among the intervals between the fold starting points, the topsheet can be made to follow the body within the widest interval between the fold starting points, and the topsheet can be placed along the body over the entirety of the absorbent article. It is easy to touch the It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved.

According to a preferred aspect, the absorbent article is provided with a transfer facilitating unit that promotes the transfer of sweat from the topsheet to the absorbent core, and the transfer facilitating unit compresses at least the topsheet in the thickness direction to press a sheet. It is constituted by at least one of a portion and a sheet opening formed in the top sheet. According to this aspect, the transfer of sweat from the topsheet to the absorbent core can be promoted by the transfer accelerator, the sticky feeling caused by drawing in perspiration can be suppressed, and the wearing feeling can be further improved.

According to a preferred aspect, the sheet crimping portion as the migration accelerator is provided, and the top sheet has an upper layer mainly composed of cotton fibers and a heat-sealable fiber, and is located on a non-skin surface side of the upper layer. It is a laminated sheet with a lower layer. According to this aspect, the lower layer has heat-fusible fibers, and the fibers are fused to each other when the sheet crimping portion is formed, so that the shape is easily maintained. Therefore, while the texture is improved by the upper layer mainly containing cotton fibers, the entrainment of bodily fluids can also be improved by the transfer promoting portion.

According to a preferred aspect, the absorbent fiber is cotton fiber, and the absorbent article has a plant-derived fragrance component or a plant-reminiscent fragrance component. According to this aspect, the wearer can obtain a sense of security that is mild to the skin by the plant-derived fragrance component while realizing the tactile effect such as the good touch by the cotton fiber. In addition, when realizing the effect of improving the wearing feeling by actual function such as perspiration, cotton fiber and plant-derived fragrance components give a suitable effect to the deep skin, and functional cotton and deep skin. The user's wearing feeling can be further improved by the synergistic effect of both sides.

According to a preferred aspect, the topsheet has a refold portion folded back toward the non-skin surface side on the outer edge of the topsheet, and a bonding portion with an adhesive is provided on the non-skin surface of the refold portion. The bonding portion is arranged on the inner side in the width direction of the outer edge of the top sheet. According to this aspect, the joining part of the folded-back part of the topsheet is located on the inner side in the width direction of the outer edge of the topsheet. Therefore, the outer edge of the folded portion (outer edge of the top sheet) tends to rise toward the skin surface from the joined portion as a starting point. As the upright part easily adheres to the groin area, sweat can be effectively absorbed, leading to improved wearing comfort.

According to a preferred aspect, there is provided an absorbent body including the absorbent core, the top sheet, and the back sheet, and a waist member disposed on a non-skin surface side of the absorbent body and covering the wearer's torso, The circumference member has a waist circumferential skin-side sheet in contact with the wearer's skin. The waist-side skin-side sheet is a laminated sheet in which an elastic sheet and an inelastic sheet are bonded to each other via a plurality of joints and laminated. According to this aspect, the waist skin-side sheet is formed with concave grooves constituted by the sheet junctions and convex grooves between the junctions. A space is formed between the body and the torso-side skin-side sheet by the concave and concave sections, and sweat can be held in the space. Accordingly, not only the top sheet of the absorbent main body allows perspiration to enter, but also the waist-circumference member to allow perspiration to pass through, so that the wearing comfort can be improved over the entire waist and crotch area.

(2) Composition of the absorbent article

Hereinafter, the absorbent article according to the first embodiment will be described with reference to the drawings. The absorbent article may be an absorbent article such as a sanitary pad, panty liner, hard incontinence liner, breast milk pad, adult incontinence pad, feces pad or sweat sheet. In particular, the absorbent article may be an article attached to the inside of a wearable article such as a user's underwear. In addition, in description of the following drawings, the same or similar code|symbol is attached|subjected to the same or similar part. However, it should be noted that the drawing is typical and the ratio of each dimension may differ from the actual one. Therefore, specific dimensions and the like must be determined in consideration of the following description. Moreover, even between drawings, there may be a case where a part where the relation or ratio of dimensions to each other is different is included.

Fig. 1 is a plan view of the absorbent article 1 according to the first embodiment, seen from the skin side. Here, the "skin surface side" corresponds to the side facing the wearer's skin during use. The "non-skin side" corresponds to the side facing away from the wearer's skin during use. Fig. 2 is a plan view of the absorbent article 1 according to the first embodiment seen from the non-skin surface side. Fig. 3 is a cross-sectional view taken along the line A-A shown in Fig. 1, and Fig. 4 is a diagram showing the bonding area of the top sheet.

The absorbent article 1 has a front-back direction (L) and a width direction (W). The front-back direction L is a direction extending from the wearer's front side (ventral side) to the rear side (dorsal side), or a direction extending from the wearer's rear side to the front side. The width direction W is a direction orthogonal to the front-back direction L. The absorbent article 1 has a thickness direction T extending to the wearer's skin side T1 and non-skin side T2. The absorbent article 1 includes a front region R1, a rear region R2, and a center region R3. The central region R3 is disposed over the center of the absorbent article in the front-back direction and includes an excretory orifice abutting portion facing the wearer's excretory orifice (for example, the vaginal orifice). When the absorbent article 1 is worn on undergarments, the central region R3 is located under the crotch of the undergarment, and is a region disposed under the wearer's crotch, that is, between the wearer's legs. The front region R1 is located on the front side of the center region R3. The shear edge of the front region R1 defines the shear edge of the absorbent article 1 . The rear region R2 is located behind the center region R3. The rear edge of the rear region R2 defines the rear edge of the absorbent article 1 .

The wing 3 may be provided in center area|region R3. In addition, a hip flap that bulges outward in the width direction W may be provided in the rear region R2. The shear edge of the wing 3 is defined by the main branch of the wing 3, and corresponds to the part located on the front side among the two parts most indented inward in the width direction W. The front edge of the wing 3 may define the boundary between the center region R3 and the front region R1. The rear end edge of the wing 3 is defined by the main branch of the wing 3 and corresponds to the part located on the rear side among the two parts most indented inward in the width direction W. The rear edge of the wing 3 may define the boundary between center region R3 and rear region R2.

An absorbent article 1 includes an absorbent core 31 that absorbs body fluids, a topsheet 10 disposed on the skin surface side T1 of the absorbent core 31 and having absorbent fibers, and an absorbent core 31. Rather, it is disposed on the non-skin surface side T2 and includes a liquid impervious back sheet 20. The top sheet 10 faces the wearer's skin, and the back sheet 20 faces the side opposite to the wearer's skin. The absorbent core 31 is installed between the top sheet 10 and the back sheet 20 .

The topsheet 10 may cover the central portion of the absorbent core 31 in the width direction W. The topsheet 10 may extend in the front-back direction L from the front region R1 to the rear region R2. The top sheet 10 may include a center sheet 11 and a second sheet 12 disposed outside the center sheet 11 in the width direction W. The second sheet 12 may be arranged on a non-skin surface side rather than the center sheet 11 . The second sheet 12 may be disposed in a region overlapping the center sheet 11 and may extend outward from the center sheet 11 in the width direction W. In addition, the top sheet 10 may be constituted only by the center sheet 11 .

The topsheet 10 has absorbent fibers. Absorbent fiber can illustrate cotton fiber. Absorbent fibers may be provided on at least one of the center sheet 11 and the second sheet 12 . Preferably, the center sheet 11 having a relatively large area in contact with the skin may have absorbent fibers. The fiber length of cotton fiber should just be 5-35 mm. The center sheet 11 can be exemplified by cotton nonwoven fabric. The basis weight of the cotton nonwoven fabric may be 30 g/m 2 . In addition, the center sheet 11 may have a two-layer structure. More specifically, an upper layer 11A mainly containing cotton fibers (more than 50%), cotton fibers and heat-sealable fibers (hydrophilic fibers obtained by coating hydrophilic oil on hydrophobic fibers or non-absorbent fibers) It may be constituted by a laminated sheet with a lower layer 11B in which a mixture of fibers of) is mixed. That is, the upper layer 11A of the center sheet 11 constitutes the upper layer of the present invention, the lower layer 11B of the center sheet 11 has heat-sealable fibers, and the center sheet 11 of this embodiment is a laminated sheet of an upper layer and a lower layer. The elongation at break of the center sheet 11 may be 30 to 70 N/25 mm in strength along the fiber orientation direction, and 5 to 10 N/25 mm in strength in a direction orthogonal to the fiber orientation direction.

The second sheet 12 may also contain heat-sealable fibers. The second sheet 12 has a non-folded portion 12A that is not folded back toward the non-skin surface side T2, and an outer edge 12E of the second sheet 12 that is folded back toward the non-skin surface side T2. It has a folded portion 12B. The folded portion 12B of the second sheet 12 is bonded to an extension sheet 13 to be described later at a bonding portion 15. The bonding portion 15 is bonded to a member that is in contact with the non-skin surface of the top sheet 10 with an adhesive such as a hot melt type adhesive.

As shown in Fig. 4, on the non-skin surface of the top sheet 10, an adhesive area RA is provided. Fig. 4 is a diagram schematically showing the non-skin surface of the topsheet 10 of the B portion shown in Fig. 1 . The bonding area RA is an area to be bonded to a member (for example, a core wrap) in contact with the non-skin surface of the top sheet 10 . The adhesive area RA is a portion to which an adhesive is attached. The bonding area RA extends in the width direction W and is provided at intervals in the front-back direction L. Further, at least a part of the bonding area RA may be provided at intervals in the front-back direction L, and the bonding area RA may be a continuous portion in the front-back direction. In addition, the space|interval RAG of the front-back direction of bonding area|region RA may be constant or may be irregular.

The back sheet 20 is a liquid impervious sheet. For the back sheet 20, a laminated nonwoven fabric mainly composed of polyethylene sheet, polypropylene, etc., a breathable resin film, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as spunbond or spunlace, etc. can be used. An adhesive portion 70 may be provided on the non-skin surface of the back sheet 20 to bond the absorbent article 1 to a wearable article (eg, underwear). The adhesive portion 70 may be a portion to which an adhesive such as a hot melt type adhesive is adhered, or a portion to which an engaging member such as a mechanical fastener is attached. The outer edge of the adhesive portion 70 in the front-back direction constitutes a bending starting point portion described later. The adhesive portion 70 extends in the width direction W and may be disposed at intervals in the front-back direction L. In the configuration in which a plurality of adhesive portions are disposed at intervals in the front-back direction L, the outer edge in the front-back direction of each adhesive portion 70 constitutes a bending starting point. In addition, the space|interval 70G of the front-back direction of adhesive part 70 comrades may be constant or may be irregular.

The absorbent core 31 is disposed at least in the central region R3 and the rear region R2. Also, the absorbent core 31 may extend from the central region R3 to the front region R1. The absorbent core 31 includes an absorbent material that absorbs liquid. The absorbent core 31 may be wrapped with a core wrap. The absorbent material constituting the absorbent core 31 may be formed of, for example, pulp and superabsorbent polymer (SAP). In the absorbent core 31, a high basis weight portion 26 having a basis weight of the absorbent material higher than that of the surrounding area or a low basis weight portion 25 having a basis weight of the absorbent material lower than that of the surrounding area may be formed. The core wrap can be composed of, for example, a nonwoven fabric or a tissue sheet.

In the core arrangement region R31 where the absorbent core 31 is disposed, a plurality of bending starting point portions 80 serving as starting points for bending the absorbent article 1 may be provided. The core arrangement area R31 is an area where the absorbent core 31 is arranged in a plan view. The starting point portion 80 for bending serves as a starting point when bending the absorbent core 31 in the front-back direction L. The bending starting point portion 80 facilitates bending of the absorbent article 1 due to a difference in rigidity, a difference in thickness, a difference in basis weight, and the like. The bending starting point portion 80 only needs to be disposed at least in the core arrangement area R31, and in an area other than the core arrangement area R31 and the core arrangement area R31 (the area outside the core arrangement area R31). may be worn over

The bending starting point portion 80 may also include a core crimping portion 61 (see Fig. 3) in which at least the absorbent core 31 is compressed in the thickness direction T. More specifically, the front edge and the rear edge of the core crimping portion 61 constitute the starting point portion 80 for bending. In addition, in the configuration in which a plurality of crimping parts are displaced in the front-back direction, the front and rear edges of each crimping part constitute the starting point portion 80 for bending. The core crimping portion 61 has high rigidity and a thin thickness compared to a region in which the core crimping portion 61 is not formed. In the form in which the core crimping portion 61 constitutes the bending starting point portion 80, the absorbent article 1 is easily deformed due to a difference in thickness and rigidity. Preferably, the core crimping portion 61 may be recessed from the skin surface side T1 toward the non-skin surface side T2. Since the core crimping portion 61 is recessed from the skin surface side T1 toward the non-skin surface side T2, it is easy to deform so that the skin surface side T1 becomes closer, and the absorbent article 1 easily conforms to the wearer's body . In addition, the core crimping part 61 may be provided integrally with the sheet crimping part 60 formed in the topsheet 10 described later. In addition, the core crimping unit 61 may constitute a transition promoting unit described later.

The bending starting point portion 80 may also include a basis weight change portion. The basis weight change portion is a portion where the basis weight of the absorbent material of the absorbent core 31 differs from adjacent regions in the front-back direction L. Specifically, the front edge and rear edge of the absorbent core 31 constitute a basis weight change portion. The front and rear edge edges of the high basis weight portion 26 constitute the basis weight change portion. The low basis weight part 25 differs according to the length in the front-back direction. When the length of the low basis weight portion 25 in the front-back direction is less than 20 mm, the center of the front-back direction of the low basis weight portion constitutes the basis weight change portion. When the length of the low basis weight portion in the front-back direction is 20 mm or more, the front and rear edge edges of the low basis weight portion constitute the basis weight change portion. Further, when a plurality of low basis weight portions are provided apart from each other in the front-back direction, and the plurality of low basis-weight portions are continuous, each of the low basis weight portions separated from each other in the front-back direction constitutes a basis weight change portion. The basis weight changing portion configured in this way differs in basis weight of the absorbent material from adjacent regions in the front-back direction, so that the thickness and rigidity of the absorbent core 31 are different. Since the basis weight change portion constitutes the bending starting point portion 80, the absorbent article 1 is easily deformed due to the difference in thickness and stiffness. Preferably, the basis weight change part may be provided along the width direction W.

The bending starting point portion 80 may also include a core opening 32 (see FIG. 3 ) formed in the absorbent core 31 . The core opening 32 may penetrate at least the absorbent core 31 in the thickness direction T. The core opening part 32 of this embodiment is dotted, and may be formed in multiple numbers at intervals in the front-back direction L and the width direction W. The core opening 32 may constitute a transition promoting portion described later.

The bending starting point portion 80 may also include folds FL1 and FL2 that are folded so that the skin facing surfaces of the absorbent article 1 face each other. In the configuration in which the creases have a constant length in the front-back direction L, the front and rear edges of the creases FL1 and FL2 constitute the starting point portion 80 for bending. The folds of the folds FL1 and FLS2 tend to deform so that the skin surface side T1 becomes closer, and the absorbent article 1 easily conforms to the wearer's body.

The bending starting point portion 80 may also include an adhesive portion 70 . More specifically, the front and rear edges of the adhesive portion 70 constitute the starting point portion 80 for bending. The adhesive portion 70 is bonded to the wearable article, and the area where the adhesive portion is not provided floats with respect to the wearable article. The front edge and the rear edge of the adhesive portion 70 serve as a boundary in which the state of bonding to the wearable article is different, and constitutes the starting point portion 80 for bending. That is, the bending starting point portion 80 includes the core opening portion 32, the core crimping portion 61, the adhesive portion 70, the low basis weight portion 25, the high basis weight portion 26, and the folds FL1 and FL2. You may be comprised by at least any of them. By providing the bending starting point portion 80 in this way, the absorbent article 1 easily follows the roundness of the wearer's body extending in the front-rear direction, the absorbent article adheres to the skin, and more easily absorbs body fluids.

The interval G80 between the bending starting point portions 80 may be the distance in the front-back direction between the bending starting point portions 80 adjacent to each other in the front-back direction L. Further, in a configuration in which a plurality of bending starting point portions 80 are provided at intervals in the front-back direction, each function as a bending starting point portion 80. However, when the interval between the bending starting point portions 80 in the front-back direction is 5 mm or less, the entirety of the plurality of bending starting point portions 80 installed at intervals of 5 mm or less is one bending, since it functions as an integrated deformation starting point. make up the starting point. Further, in a configuration in which a plurality of starting point portions of the same shape are provided on the same line along the width direction W, only one of the starting point portions on the same line is selected to measure the interval in the front-back direction.

As described above, the absorbent article 1 has wings 3 . The wing 3 extends outward in the width direction W from the outer edge of the absorbent core 31 in the center region R3. The wing 3 may be configured by laminating the directing sheet 13 and the back sheet 20 . The directing sheet 13 is disposed on the non-skin surface side of the second sheet 12 and may extend outward from the second sheet 12 in the width direction. The wing 3 is configured to be foldable toward the back seat 20 side. The wing 3 is folded back to the non-skin side of the crotch portion of the underwear during use.

As shown in FIG. 1 , the absorbent article 1 may have a sheet crimping portion 60 that compresses at least the top sheet 10 in the thickness direction. In the sheet crimping unit 60, at least the top sheet 10 may be compressed, and the top sheet 10 and the absorbent core 31 may be compressed, and sheets other than these (eg, core wrap) may also be used. It may be compressed. As shown in FIG. 3 , the sheet crimping portion 60 of this embodiment is formed together with the core crimping portion 61 and overlaps the core crimping portion 61 . Also, the absorbent article 1 may have a sheet opening 65 formed in at least the top sheet 10 . The sheet opening 65 may pass through the top sheet 10 in the thickness direction T. The sheet opening 65 only needs to be formed in at least the topsheet 10, and may also be formed in other members (eg, core wrap, absorbent core) together with the topsheet 10. The sheet crimping portion 60 and the sheet opening portion 65 may constitute a transfer promoting portion of the present invention. The migration accelerator promotes the migration of sweat from the top sheet 10 to the absorbent core 31 . As shown in FIG. 3 , the sheet opening 65 of this embodiment is formed together with the core opening 32 and overlaps with the core opening 32 .

The absorbent article 1 of the present embodiment is configured to improve wearing comfort even when continuously used for a long time. More specifically, the absorbent article 1 is structured so that perspiration can be improved. Next, a configuration for improving sweat entrainment will be described in detail. The perspiration entrainability of the absorbent article can be evaluated by the perspiration transfer value. The sweat transfer value is a value that indicates the amount of sweat transfer from the skin-facing surface of the topsheet 10 to the inside of the absorbent article, and is the weight of sweat on the skin-facing surface of the topsheet 10 at the time of lapse of 120 seconds It is the percentage of the weight of sweat transferred to the absorbent article. It can be evaluated that the higher the sweat transfer value is, the higher the perspiration entrainability of the absorbent article is, and the lower the perspiration transfer value is, the lower the sweat entrainability of the absorbent article is. In addition, the perspiration entrainability can also be evaluated by the ratio of the weight of sweat that has returned to the skin surface of the top sheet 10 to the weight of sweat that has transferred to the absorbent article in the measurement of the sweat transfer value, that is, the reewet rate. . The lower the reeweet rate, the more difficult the sweat once drawn in is to return to the wearer, the higher the perspiration draw-in of the absorbent article, the lower the reeweet rate, the easier it is for the sweat once drawn in to return to the wearer's side, the sweat of the absorbent article can be evaluated as low.

The sweat transfer level can be measured by the following method. (1) A 40 g/m 2 air-laid nonwoven fabric is cut into sheet pieces having dimensions of 30 mm × 50 mm. As the air-laid nonwoven fabric, KS-40 from Oji Kinoclos Co., Ltd. was used. (2) A laminate is prepared by overlapping five sheets of the cut air-laid nonwoven fabric, and 1 ml of simulation sweat is absorbed with respect to the laminate. Simulated sweat dissolves 80 g of sodium chloride (purity of 99.0% or higher), 8 g of magnesium sulfate heptahydrate (MgSO4 7H2O), 3 g of calcium chloride dihydrate (CaCl2 2H2O), and 1 g of dye: Blue No. 1 in 10 L of ion-exchanged water. prepared by doing (3) The weight of the absorbent article, which is a measurement target of the sweat transfer value, is measured. (4) A laminate is placed on the topsheet 10 of the absorbent article to be measured, and a weight of 525 g is placed on the laminate. (5) After 120 seconds have elapsed since the weight was loaded, the laminate is removed and the weight of the absorbent article is measured. The difference in weight is taken as the first sweat transfer value. (6) Next, a new layered product is produced, and 1 ml of pseudo-sweat is absorbed into the layered product. (7) A laminate is placed on the topsheet 10 of the absorbent article to be measured, and a weight of 525 g is placed on the laminate. (8) After 120 seconds have elapsed since the weight was loaded, the laminate is removed and the weight of the absorbent article is measured. The difference in weight between the second test and the first test is taken as the second sweat transfer value.

A rewet rate can be measured by the following method. The first rewet rate is obtained by using simulated sweat similar to the sweat transfer value, and after performing (1) to (5) of the above method for measuring the sweat transfer value, filter paper (filter paper No. 2 manufactured by Advantech) 10 The sheets are stacked on the top sheet 10, and a weight of 525 g is placed thereon. After 60 seconds have elapsed, the weight of the absorbent article is measured. The difference between the weight measured in (5) and the weight after the rewet test is taken as the first rewet value. Table 1 shows the measurement results of the sweat transfer value and retweet rate of the absorbent article according to Example 3 in Example 1 and the absorbent article according to Comparative Example 3 in Comparative Example 1. In addition, using the absorbent article according to Example 1 in Example 1 and the absorbent article according to Comparative Example 3 in Comparative Example 1, 10 testers evaluated the sensitivity to fit. In the sensitivity evaluation, wearing comfort was evaluated when the absorbent article was worn by a user during a non-menstrual period or a period of low menstrual blood volume in the latter half of the menstrual period. If stickiness, sticking, or sweat loss due to sweat was felt, it was rated as "poor", and when stickiness, sticking, or sweat loss due to sweat was not felt, it was rated as "good", and if more than 8 people judged it as "good" was set as "◎", and the case where 6 or more and 8 or less people judged as "good" was set as "○", and the case where 5 or less people judged as "good" was set as "x".

In the absorbent article according to one aspect, when the sweat transfer value is measured twice in succession, the second sweat transfer value is higher than the first sweat transfer value. The force for drawing in the sweat discharged on the top sheet 10 is higher in the second time than in the first time, and the sweat can be drawn in continuously. By migrating and absorbing moisture into the absorber, surface diffusion of moisture is suppressed, and the contact area between the body and water is reduced, so that cooling of the body can be suppressed. Moreover, in addition to improving the feel by using absorbent fibers such as cotton fibers for the topsheet 10, the stickiness caused by continuously drawing in sweat can be suppressed, and the wearing feeling can be further improved.

In the absorbent article according to the first aspect, the first sweat transfer value may be 0.43 or more. Since the first sweat transfer value is 0.43 or more and the sweat pull-in property is high, the sticky feeling caused by the draw-in of sweat can be suppressed, and the wearing feeling can be further improved. In addition, because the first sweat transfer value is 0.52 or more, people who exceed 80% in sensory evaluation feel that it is suitable. The fact that people over 80% can feel the goodness means that even users with low interest in the product can feel the goodness when using it. Therefore, suitably, the sweat transfer value of the 1st time should just be 0.52 or more. In the absorbent article according to the first aspect, the retwet rate, which is the ratio of the weight of sweat that has returned to the skin surface of the topsheet 10 to the weight of sweat that has transferred to the absorbent article in the first measurement of the sweat transfer value It is good if silver is 0.22 or less. It is possible to suppress the liquid return of sweat once taken in. By suppressing the rewet, the wearing feeling can be further improved. In addition, because the rewet rate is 0.12 or less, people who exceed 80% in sensory evaluation feel that it is suitable. Therefore, suitably, the rewet rate should just be 0.12 or less.

Further, the absorbent article of another aspect has a first sweat transfer value of 0.43 or more and a first retweet rate of 0.22 or less. Since the first sweat transfer value is 0.43 or more and the sweat pull-in property is high, the sticky feeling caused by the draw-in of sweat can be suppressed, and the wearing feeling can be further improved. Moreover, it is possible to suppress the liquid return of perspiration once taken in. By suppressing the rewet, the wearing feeling can be further improved.

The second sweat transfer value may be 0.49 or more. The sweat transfer value of the second time is 0.49 or more, and the sweat transfer amount of the second time is also higher, so that about half of the sweat on the skin facing surface of the topsheet 10 can be taken in. The feeling of stickiness caused by drawing in sweat can be suppressed, and the wearing feeling can be further improved. In addition, since the first sweat transfer value was 0.66 or more, people who exceeded 80% in the sensory evaluation felt that it was suitable. Therefore, suitably, the sweat transfer value of the 2nd time should just be 0.66 or more.

The absorbent article is configured to conform easily to the body when worn. Since the absorbent article follows the body when worn, it is easier to absorb sweat, which is a body fluid. More specifically, in the core arrangement region R31 where the absorbent core 31 is disposed, a bending starting point portion 80 is provided. Among the intervals between the bending starting point portions 80, the widest interval may be 20 mm or less. In the core arrangement region R31, an absorbent core 31 having relatively high rigidity is disposed in the absorbent article 1, and there is a fear that it is difficult to conform to the body. However, since the bending starting point portion 80 is provided, it is easy to deform through the bending starting point portion 80 . Among the intervals of the bending starting point portions 80, the widest interval is 20 mm or less. That is, the intervals between the bending starting point portions 80 are all 20 mm or less. Since the bending starting point portions 80 are arranged at relatively short intervals, it is easy to make the absorbent article 1 follow the body in the cross section along the front-back direction L. By placing the absorbent article 1 along the body, it is easy to bring the topsheet 10 into contact with the body over the entirety of the absorbent article. It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved. The interval between the bending starting point portions 80 may be any interval between the bending starting point portions 80, such as the interval between the core crimping portion 61 and the core opening 32. The interval between the bending starting point portions 80 is not constant and may be irregular. The roundness along the front-back direction of the body is not a constant curvature, and the bending starting point portions 80 arranged at irregular intervals make it easier to follow the roundness of the body.

The average interval RAG between the bonding regions RA of the non-skin surface of the topsheet 10 may be equal to or less than the widest interval among the intervals of the starting point portions 80 for bending. In the bonding area RA, since the top sheet 10 is bonded to the member located on the non-skin surface side, the top sheet 10 is suppressed from floating and is easily disposed along the body along with the absorbent core 31. . Since the average interval RAG between the bonding regions RA is equal to or less than the widest interval among the intervals between the starting point portions 80 for bending, the topsheet 10 is absorbed within the widest interval between the starting point portions 80 for bending. It can conform to the body together with the core 31, making it easy to bring the top sheet 10 against the body over the entirety of the absorbent article 1. It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved.

The average interval 70G between the adhesive portions 70 may be less than or equal to the widest interval among the intervals between the starting point portions 80 for bending. In addition, since the adhesive portion 70 itself constitutes the bending starting point portion 80, the average interval 70G between the adhesive portions 70 is the interval among the bending starting point portions 80 other than the adhesive portion 70. It is good if it is less than the widest interval. In the adhesive portion 70, since the absorbent article adheres to the wearable article, the absorbent article is easy to be placed along the body. Since the average interval (70G) between the adhesive portions 70 is equal to or less than the widest interval among the intervals of the starting point portions for bending, the topsheet can be made to follow the body within the widest interval between the starting point portions 80 for bending, resulting in water absorbency. It is easy to bring the top sheet against the body throughout the article. It is possible to provide a wide area for drawing in sweat, so that the wearing feeling can be further improved.

The joint portion 15 of the non-skin surface of the second sheet 12 as the top sheet 10 may be arranged on the inner side in the width direction of the outer edge 12E of the second sheet 12 serving as the top sheet 10 . The joining portion 15 of the folded portion 12B of the topsheet 10 is located on the inner side of the outer edge of the topsheet 10 in the width direction. Therefore, the outer edge of the folded portion (the outer edge of the top sheet) is likely to be raised toward the skin surface starting from the joining portion 15. Since the upright portion is easily adhered to the groin area, sweat can be effectively absorbed, and the wearing feeling can be further improved.

The length of the second sheet 12 in the width direction W may be longer than the length of the center sheet 11 in the width direction W. The sweat perspiration property of the second sheet 12 may be higher than that of the center sheet 11 . Both the second sheet 12 and the center sheet 11 may be absorbent. A sanitary pad as an absorbent article is placed near the center in the width direction (W) to keep in close contact with the body. On the other hand, at a position near the outer side of the sanitary pad in the width direction (W), it repeatedly comes into contact with the skin or comes off in accordance with the movement of the leg. By narrowing the width of the center sheet 11 closest to the skin and widening the width of the second sheet having relatively low perspiration, it is possible to make it difficult to feel the stickiness of sweat when the wearer moves.

The absorbent article 1 is configured to easily draw in sweat. More specifically, a transfer facilitating unit may be provided to promote transfer of sweat from the top sheet 10 to the absorbent core 31 . The transition promoting unit may be constituted by at least one of the sheet crimping unit 60 and the sheet opening 65 . The migration promoting portion can promote the migration of sweat from the top sheet 10 to the absorbent core, suppress the sticky feeling caused by drawing in sweat, and further improve the wearing comfort. In another aspect, the transfer accelerating portion may also be constituted by either the core crimping portion 61 or the core opening portion 32 .

The center sheet 11, which is the top sheet 10, is mainly composed of absorbent fibers such as cotton fibers and rayon fibers (hydrophobic fibers coated with a hydrophilic emulsion and excluding hydrophilic fibers and non-absorbent fibers). The term "main" as used herein refers to those in which the fiber ratio of the absorbent fibers in the fibers of the topsheet is 50% or more. According to the topsheet, the transferability of sweat from the skin to the topsheet and the wearing comfort can be improved in a well-balanced manner. More preferably, the topsheet may be substantially constituted only of absorbent fibers. The topsheet substantially composed only of absorbent fibers may contain thermoplastic resin fibers or binder fibers at a fiber ratio of less than 10%. According to the topsheet, the transferability of sweat from the skin to the topsheet and the wearing feeling can be further improved.

Further, the topsheet 10 is composed of a laminate of an upper layer 11A mainly composed of cotton fibers and a lower layer 11B mainly composed of heat-sealable fibers and located on the non-skin surface side (T2) of the upper layer 11A. It may be a sheet. In this embodiment, the center sheet 11 as the top sheet 10 has an upper layer 11A and a lower layer 11B. According to the topsheet, the ability to transfer sweat from the skin to the topsheet, the ability to draw in sweat that has migrated to the surface of the topsheet to the non-skin side within the topsheet, and the sense of security and touch to the skin can be improved. there is. More preferably, it may be a laminated sheet of an upper layer 11A made of 100% cotton fibers and a lower layer 11B which has thermally fusible fibers and is located on the non-skin surface side of the upper layer. According to the topsheet, the transferability of sweat from the skin to the topsheet, the ability to draw in sweat that has migrated to the surface of the topsheet to the non-skin side within the topsheet, and the sense of security and touch to the skin can be further improved. can The absorbent article having a top sheet having an upper layer and a lower layer may be provided with a sheet crimping unit 60 as a transfer promoting unit. The lower layer has heat-fusible fibers, and when the crimping portion is formed, the fibers are fused together and the shape is easily maintained. Therefore, while the upper layer containing cotton fiber improves the feel and gives the impression of feeling safe and comfortable on the skin, the penetration promoting part can also improve the entrainability of body fluids.

The absorbent article may have other configurations that improve wearing comfort, in addition to sweat entrainment and feel. More specifically, the absorbent fiber is cotton fiber, and the absorbent article may have a plant-derived fragrance component or a plant-reminiscent fragrance component. The wearer can obtain a sense of security that is gentle on the skin by the plant-derived fragrance component while realizing the effect of the touch, such as the goodness of the touch by the cotton fiber. In addition, when realizing the effect of improving the wearing comfort by actual functions such as perspiration, cotton fiber and plant-derived fragrance components give a suitable effect to deep cotton, and increase both functional and deep cotton. As a result, the user's wearing feeling can be further improved.

The back sheet 20 may be formed of a sheet having air permeability. That is, the absorbent article 1 has not only air permeability on the skin surface side, but also air permeability on the non-skin surface side. By ensuring air permeability on the non-skin surface side of the absorbent article, it is possible to suppress sweating of the absorbent article and improve the wearing comfort. The absorbent core 31 may have a superabsorbent polymer as an absorbent material, or more preferably may be a superabsorbent sheet in which the superabsorbent polymer is sandwiched by a sheet. Moisture can be absorbed in the absorbent core 31, sweat breaking of the absorbent article can be suppressed, and wearing comfort can be improved.

The absorbent article 1 may be individually wrapped with an individual wrapping sheet before use. By being wrapped with an individual wrapping sheet, it is difficult for the absorbent article to absorb moisture before use, and hygroscopicity at the time of use can be ensured. Suitably, the individually wrapped sheet may be a film.

Next, based on FIG. 5, the absorbent article 1X according to the second embodiment will be described. The absorbent article 1X according to the second embodiment is a shorts-shaped sanitary pad formed in advance into a pants shape. The absorbent article according to the second embodiment and the absorbent article according to the present invention are not limited to shorts-type pads, and may be disposable diapers. Fig. 5 is a front view of the pants-shaped absorbent article. In the following description of the second embodiment, the same reference numerals are used for configurations similar to those of the above-described embodiment, and descriptions are omitted.

The absorbent article 1X has a front waist region S1, a rear waist region S2, and a crotch region S3. The front torso region S1 opposes the front side of the wearer's body when in use. The back torso region S2 opposes the rear side of the wearer's body when in use. The crotch region S3 is located between the front waist region S1 and the rear waist region S2, and is disposed below the crotch of the wearer during use. The crotch folding line FW1 which divides the absorbent article 1X into front and back passes through the crotch region S3. The crotch folding line FW1 extends along the width direction W. The absorbent article 1X is folded so that the front waist region S1 and the rear waist region S2 overlap with the crotch folding line FW1 as the starting point. In addition, a side joint 59 is formed in which the outer side of the front waist region S1 in the width direction W and the outer side of the rear waist region S2 in the width direction W are joined to each other. . The absorbent article 1X is formed with a waist-circumferential opening 5 into which the wearer's waist is inserted, and a pair of leg-circumferential openings 6 into which the wearer's legs are respectively inserted.

The absorbent article 1X includes an absorbent main body 58 and a waist member 50 . The absorbent main body 58 is provided at least in the crotch region S3. The absorbent body 58 includes a liquid permeable top sheet 10, a liquid impermeable back sheet 20, and an absorbent core 31 disposed between the top sheet 10 and the back sheet 20. at least provide The waist-circumference member 50 has a waist-circumference skin-side sheet 51 disposed on the non-skin surface side T2 of the absorbent body 58 and in contact with the wearer's skin. The waist skin-side sheet 51 is a laminated sheet in which an elastic sheet 52 and an inelastic sheet 53 are bonded to each other via a plurality of sheet joint portions 54 and laminated.

6 is a schematic cross-sectional view of a laminated sheet. In the laminated sheet, an elastic sheet 52 and an inelastic sheet 53 are bonded to each other via a plurality of sheet joint portions 54 and laminated. The sheet bonding portion 54 can be formed by welding fibers with an ultrasonic device, for example. The elastic sheet 52 contains elastic fibers, and in this embodiment, is formed of elastic fibers and non-elastic fibers, and is elastically stretchable in the width direction W. That is, the elastic sheet 52 is stretched 100% in the width direction W, and the residual strain when released from the stretched state is 30% or less, preferably 20% or less.

The elastic fiber may be formed only from a thermoplastic elastomer or may be formed by mixing a thermoplastic elastomer and another resin. It is preferable that the inelastic fiber contains a thermoplastic resin. Examples of the non-elastic sheet 53 include fibrous nonwoven fabrics produced by various manufacturing methods such as air-through nonwoven fabric, point bond nonwoven fabric (heat roll nonwoven fabric), spunlace nonwoven fabric, spunbond nonwoven fabric, and meltblown fiber nonwoven fabric. available. In addition to fibrous nonwoven fabric, woven fabric, knitted fabric, or resin film may also be used.

Referring to FIG. 6, the elastic sheet 52 includes a plurality of grooved portions 56 extending in the width direction W while overlapping the sheet joint 54, and adjacent to the grooved portion 56 in the width direction ( A plurality of barbed wire portions 55 extending in W) are formed. The barbed wire portion 55 becomes a ridge filled with fibers constituting the elastic sheet 52 on the inside thereof. However, it is not necessary that all of the convex portions 55 are filled with fibers, as long as they are present enough to maintain the volume of a sheet described later. The fibers in the barbed section 55 are bent or crimped (not shown), and when these fibers are stretched, the entire elastic sheet 52 is stretched in the front-back direction (L) and width direction (W). It becomes possible. In particular, in the width direction W, it becomes elastically stretchable. A space is formed between the body and the waist-skin-side sheet 51 by the convex portion 55 and the concave portion 56 of the waist-skin-side sheet 51, and sweat can be held in the space. . Therefore, sweat is drawn in not only by the top sheet 10 of the absorbent main body, but also by the waist member, so that the wearing comfort can be improved over the entire waist and crotch area.

As mentioned above, although this invention was demonstrated in detail using the above-mentioned embodiment, it is clear for those skilled in the art that this invention is not limited to the embodiment demonstrated in this specification. This invention can be implemented as a modification and change aspect, without deviating from the meaning and range of this invention defined by description of the claim. Therefore, the description in this specification is for the purpose of illustrative explanation, and does not have any limiting meaning to the present invention.

In addition, the entire contents of Japanese Patent Application No. 2020-085458 filed on May 14, 2020 are incorporated herein by reference.

1, 1X: absorbent article 10: top sheet
11: center sheet 11A: upper layer
11B: lower floor 12: second seat
12B: folded portion 12E: outer edge
15: junction 20: back seat
23: absorbent core 25: low basis weight portion (bending starting point portion)
31: absorbent core 50: waist member
51: body circumferential skin side sheet 52: elastic sheet
53: inelastic sheet 54: sheet joint
58: absorbent body 60: sheet compression unit (transition promotion unit)
61: core crimping portion (bending starting point portion) 65: sheet opening (transition promoting portion)
70: adhesive portion (bending starting point portion) 80: bending starting point portion
FL1, FL2: Folding crack (bending starting point) L: Front and rear direction
R31: core placement area RA: bonding area
T: thickness direction T1: skin side
T2: non-skin surface side W: transverse direction

Claims (13)

an absorbent core for absorbing body fluid;
a top sheet disposed closer to the skin surface than the absorbent core and having absorbent fibers;
An absorbent article disposed on a non-skin surface side of the absorbent core and provided with a liquid impermeable back sheet,
A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet When defined as a percentage of the weight of sweat,
The absorbent article according to claim 1 , wherein when the sweat transfer value is measured twice in succession, the second sweat transfer value is higher than the first sweat transfer value. According to claim 1,
The absorbent article, wherein the first sweat transfer value is 0.43 or more. According to claim 1 or 2,
The absorbent article according to claim 1 , wherein a ratio of a weight of sweat that has returned to the skin side of the topsheet to a weight of sweat that has transferred to the absorbent article in the first measurement of the sweat transfer value is 0.22 or less. an absorbent core for absorbing body fluid;
a top sheet disposed closer to the skin surface than the absorbent core and having absorbent fibers;
An absorbent article disposed on a non-skin surface side of the absorbent core and having a liquid impermeable back sheet,
A sweat transfer value indicating the amount of sweat transferred from the skin-facing surface of the topsheet to the inside of the absorbent article transferred to the absorbent article at 120 seconds relative to the weight of sweat on the skin-facing surface of the topsheet When defined as a percentage of the weight of sweat,
The first sweat transfer value is 0.43 or more,
The absorbent article according to claim 1 , wherein a ratio of a weight of sweat that has returned to the skin side of the topsheet to a weight of sweat that has transferred to the absorbent article in the first measurement of the sweat transfer value is 0.22 or less. According to any one of claims 1 to 4,
The absorbent article, wherein the second sweat transfer value when the sweat transfer value is measured twice in succession is 0.49 or more. According to any one of claims 1 to 5,
A plurality of bending starting points serving as starting points for bending the absorbent article are provided in a core arrangement region where the absorbent core is disposed,
The plurality of bending starting points are provided at intervals in the front-back direction,
The absorbent article according to claim 1 , wherein the widest interval among the intervals between the bending origins is 20 mm or less. According to claim 6,
On the non-skin surface of the top sheet, an adhesive area to which an adhesive is applied is provided;
The adhesive areas are provided at intervals in the front-back direction,
The absorbent article according to claim 1 , wherein an average distance between the bonding regions is equal to or less than the widest distance among the distances at the starting point of the bend. According to claim 6 or 7,
An adhesive portion for bonding the absorbent article to a wearable article is provided on the non-skin surface of the absorbent article;
The adhesive portion is installed at intervals in the front-back direction,
The absorbent article according to claim 1 , wherein an average distance between the bonding regions is equal to or less than the widest distance among the distances at the starting point of the bend. According to any one of claims 1 to 8,
The absorbent article is provided with a migration promoter that promotes the migration of sweat from the topsheet to the absorbent core;
The absorbent article according to claim 1 , wherein the transfer accelerating portion is constituted by at least one of a sheet crimping portion that compresses at least the topsheet in a thickness direction and a sheet opening formed in the topsheet. According to claim 9,
The sheet crimping portion as the transfer facilitating portion is provided,
The absorbent article according to claim 1 , wherein the topsheet is a laminated sheet of an upper layer mainly containing cotton fibers and a lower layer mainly containing heat-sealable fibers and located on a non-skin surface side of the upper layer. According to any one of claims 1 to 10,
The absorbent fiber is a cotton fiber,
The absorbent article has a plant-derived fragrance component or a plant-reminiscent fragrance component. According to any one of claims 1 to 11,
The top sheet has a folded portion folded back to the non-skin surface side at an outer edge of the top sheet,
On the non-skin surface of the folded portion, a bonding portion to which an adhesive is attached is provided,
The absorbent article according to claim 1 , wherein the bonding portion is disposed inside the outer edge of the topsheet in the width direction. According to any one of claims 1 to 12,
an absorbent body including the absorbent core, the top sheet, and the back sheet;
a waist-circumference member disposed on a non-skin surface side of the absorbent body and covering the wearer's torso;
The waist-circumference member has a waist-circumference skin-side sheet in contact with the wearer's skin;
The absorbent article according to claim 1 , wherein the waist skin-side sheet is a laminated sheet in which an elastic sheet and an inelastic sheet are bonded to each other via a plurality of sheet joints and laminated.

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