Pad-type absorbent article

Abstract

The utility model provides a sanitary napkin (1) serving as a pad-type absorbent article, which is provided with a wing part (6) extending outwards from the outer edge of an absorbent body (4), and the wing part (6) is provided with a pair of side wing parts (6S, 6S). The outer edge of the side wing section (6S) has a front constricted section (61) located in a front region (F) and a rear constricted section (62) located in a rear region (R), and the portion of the outer edge of the side wing section (6S) sandwiched by both constricted sections (61, 62) has a curved section (63) protruding outward in the transverse direction (Y). A non-skin-facing surface of the sanitary napkin (1) is provided with a fixing part (7) for fixing the sanitary napkin (1) to a garment of a wearer. The fixing part (7) is disposed in a region overlapping the absorber (4) in plan view.

Description

Technical Field

[0001] The utility model relates to an absorbent article which is worn on the crotch and used for absorbing excrement. Background Art

[0002] As a representative example of absorbent articles for women, sanitary napkins are known to include an absorbent body for absorbing and retaining menstrual blood and other excreta, and a flap portion extending outward from the outer edge of the absorbent body and forming the outline of the absorbent article, and a fixing portion for fixing the absorbent article to the wearer's clothing is arranged on the non-skin opposite side (clothing opposite side) (Patent Documents 1 to 3).

[0003] The absorbent articles described in Patent Documents 1 and 2 include a portion of the wing portion located on both sides of the absorbent body (side wing portion), including a longitudinal central portion, and a fin portion that extends laterally outward more significantly than the peripheral portion. The fin portion is used by being manually folded over to the non-skin-opposing surface (outer surface) of the crotch of clothing such as shorts by fingers when the absorbent article is fixed to the skin-opposing surface (inner surface) of the crotch, and a fixing portion is arranged on the surface opposite to the non-skin-opposing surface of the crotch of the clothing when folded over. On the other hand, in the absorbent article described in Patent Document 3, the extension length of the side wing portion to the lateral outward is relatively short, and no fixing portion is arranged on the side wing portion. When worn, the side wing portion is not folded over to the non-skin-opposing surface of the clothing, but extends downward along the legs of the wearer (Patent Document 3,

[0058] ).

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2020-5845

[0007] Patent Document 2: Japanese Patent Application Publication No. 2020-96779

[0008] Patent Document 3: International Publication No. 2019 / 26176 Summary of the invention

[0009] The utility model relates to a pad-type absorbent article, which has an absorbent body capable of absorbing and retaining body fluids, has a longitudinal direction corresponding to the front-back direction of a wearer and a transverse direction orthogonal to the longitudinal direction, and has an excretion portion relative area arranged relative to the excretion portion of the wearer when worn, a front area arranged at a position forward of the longitudinal direction than the excretion portion relative area, and a rear area arranged at a position rearward of the longitudinal direction than the excretion portion relative area.

[0010] In one embodiment, preferably, the absorbent article has a wing portion extending outward from the outer edge of the absorbent body to form the outline of the absorbent article, and the wing portion has a pair of side wing portions located at a position further outward in the horizontal direction than a pair of imaginary straight lines extending in the longitudinal direction through the outermost end of the absorbent body in the horizontal direction as a reference.

[0011] In one embodiment, preferably, the outer edge of the side wing portion has a front narrowing portion located in the front area and a rear narrowing portion located in the rear area, and the portion of the outer edge of the side wing portion sandwiched by the two narrowing portions has a curved portion convex to the outside in the lateral direction.

[0012] In one embodiment, it is preferable that a fixing portion for fixing the absorbent article to clothing of a wearer is arranged on the non-skin facing surface of the absorbent article, and the fixing portion is arranged in a region overlapping with the absorbent body in a plan view.

[0013] Other features, effects and implementation modes of the present invention are described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic plan view of the skin-opposing side of a sanitary napkin as one embodiment of the absorbent article of the present invention.

[0015] Figure 2 It is along Figure 1 A schematic cross-sectional view of a cross section along line II (a cross section along the thickness direction and along the transverse direction of the sanitary napkin).

[0016] Figure 3 yes Figure 1 A schematic plan view of the non-skin facing side of a sanitary napkin is shown.

[0017] Figure 4 yes Figure 1 The sanitary napkin shown in the figure is worn along the Figure 1 Schematic cross-sectional view of the cross section in the thickness direction and the transverse direction. DETAILED DESCRIPTION

[0018] When an absorbent article with a fin portion is worn on the crotch of the wearer, the fin portion needs to be bent, and the wearing operation takes time. In addition, when the fin portion cannot be perfectly bent and the absorbent article is worn in a state where the fin portion is wrinkled or twisted, the fixing force of the fixing portion arranged on the fin portion cannot be fully exerted, and sometimes the fixing of the fin portion is released during the wearing process of the absorbent article. In addition, in addition to such problems with the fin portion, in existing absorbent articles such as sanitary napkins, especially when worn for a long time, there is a problem of unwanted deformation such as twisting of the absorbent body, which causes leakage. There is no absorbent article that can solve the above-mentioned problems of the fin portion and the absorbent body, and can be easily worn without worrying about leakage of excrement.

[0019] The utility model relates to an absorbent article which can be easily worn, is not prone to wrinkles and twists during wearing, and has excellent leakage prevention performance.

[0020] Hereinafter, the preferred embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in the following description of the accompanying drawings, the same or similar parts are marked with the same or similar reference numerals. The accompanying drawings are basically schematic illustrations, and the ratios of various dimensions may sometimes differ from the actual situation.

[0021] Figure 1 to Figure 3 A sanitary napkin 1 (hereinafter also referred to as "sanitary napkin 1") is shown as one embodiment of the absorbent article of the present invention. The sanitary napkin 1 has a longitudinal direction X corresponding to the front-to-back direction of the wearer and extending from the front side (ventral side) of the wearer through the crotch to the rear side (dorsal side), and a lateral direction Y orthogonal to the longitudinal direction X.

[0022] In the present invention, “longitudinal front” refers to a position further forward (abdomen of the wearer) than a reference position in the longitudinal direction, and “longitudinal rear” refers to a position further rearward (back side of the wearer) than a reference position in the longitudinal direction.

[0023] In this embodiment, if Figure 1 and Figure 3 As shown, the sanitary napkin 1 is long in the longitudinal direction X, and its length direction is consistent with the longitudinal direction X.

[0024] In this embodiment, the sanitary napkin 1 is formed symmetrically on one side and the other side with respect to the transverse center line CLy. Figure 1 and Figure 3 The sanitary napkin 1 in the unfolded state shown is divided into two equal parts in the transverse direction Y and an imaginary straight line extending in the longitudinal direction X.

[0025] The sanitary napkin 1 has an absorbent body 4 that can absorb and retain body fluids (menstrual blood, urine, feces, sweat, etc.). In addition, the sanitary napkin 1 preferably also has a liquid-permeable front sheet 2 that can contact the wearer's skin and a leak-proof back sheet 3. In this case, Figure 2 As shown, the absorbent body 4 is arranged between the front sheet 2 and the back sheet 3. In the sanitary napkin 1, the front sheet 2 covers the entire area of ​​the skin-opposite surface of the absorbent body 4, and the back sheet 3 covers the entire area of ​​the non-skin-opposite surface of the absorbent body 4. As the two sheets 2, 3, the sheets commonly used in such absorbent articles can be used without special restrictions. As the front sheet 2, various sheets with liquid permeability can be used, for example, nonwoven fabrics, woven fabrics, and paper can be cited. As the back sheet 3, a sheet with leakproofness can be used, specifically, a sheet with liquid impermeability (the property of not permeating liquid at all) or liquid difficulty permeability (although it cannot be said to be liquid impermeability, it is difficult to permeate the property of liquid) can be used, for example, a resin film with moisture permeability, a laminate of the resin film and a nonwoven fabric can be cited.

[0026] In this embodiment, if Figure 1 As shown in FIG. 1 , a pair of side panels 5, 5 are arranged on both sides of the skin-facing surface of the sanitary napkin 1 (the skin-facing surface of the front sheet 2) along the longitudinal direction X. The pair of side panels 5, 5 are arranged to overlap with both sides of the absorbent body 4 along the longitudinal direction X in a plan view and to extend over substantially the entire length of the longitudinal direction X. In the side panels 5, as shown in FIG. Figure 2 As shown, the outer side of the side piece 5 along the two sides of the longitudinal direction X, including the outer side edge located outside the transverse direction Y, is formed as a fixed edge fixed to other components (in the illustrated embodiment, it is the back sheet 3), and the inner side including the inner side edge located inside the transverse direction Y is formed as a free edge not fixed to other components. When the sanitary napkin 1 is worn, the above-mentioned free edge of the side piece 5 stands up to the skin side of the wearer, thereby preventing excrement such as menstrual blood from flowing out to the outside of the transverse direction Y. As the side piece 5, a sheet with leakage resistance similar to the back sheet 3 can be used.

[0027] In the present invention, the "skin-opposing surface" refers to the surface of the absorbent article or its component (e.g., absorber 4) that faces the skin side of the wearer when the absorbent article is worn, that is, the outer surface on the side relatively close to the skin of the wearer. In addition, the "non-skin-opposing surface" refers to the outer surface of the absorbent article or its component that faces the side opposite to the skin side when the absorbent article is worn, that is, the side relatively far from the skin of the wearer. In addition, "when worn" as mentioned here refers to the state of maintaining the normal appropriate wearing position, that is, the correct wearing position of the absorbent article.

[0028] like Figure 1 and Figure 3As shown, the sanitary napkin 1 has an excretion area M relative to the wearer's excretion area, a front area F arranged in front of the excretion area M on the longitudinal direction X (ventral side), and a rear area R arranged in the rear (dorsal side) of the excretion area M on the longitudinal direction X.

[0029] In the present invention, "the area opposite to the excretion part" refers to an area in the absorbent body configuration area of ​​the absorbent article (the area overlapping with the absorbent body when viewed from above) that includes the excretion part opposite portion that is arranged opposite to the excretion part. The above-mentioned "excretion part" refers to the part where the body fluids (menstrual blood, urine, feces, sweat, etc.) of the wearer of the absorbent article are excreted, typically the vaginal opening, penis or anus, which varies depending on the purpose of the absorbent article, etc. The above-mentioned "excretion part opposite portion" refers to an area in the absorbent article that overlaps with the above-mentioned excretion part when viewed from above when worn. The above-mentioned excretion part opposite area can be, for example, the entire area in the absorbent body configuration area of ​​the absorbent article that is at the same position in the longitudinal direction as the above-mentioned excretion part opposite portion (the area that overlaps with the projection image when the above-mentioned excretion part opposite portion is projected horizontally). In the case where the absorbent article is an absorbent article for women such as a sanitary napkin and a panty liner, its excretion part opposite area refers to an area that is arranged opposite to only the vaginal opening when worn.

[0030] The boundary between the front region F and the excretion region M (the front end in the longitudinal direction X of the excretion region M) is typically present at a position 10% to 40% away from the longitudinal front end 1F of the sanitary napkin 1 to the rear in the longitudinal direction X by the total length of the sanitary napkin 1 in the longitudinal direction X. In addition, the boundary between the rear region R and the excretion region M (the rear end in the longitudinal direction X of the excretion region M) is typically present at a position 10% to 40% away from the longitudinal rear end 1R of the sanitary napkin 1 to the front in the longitudinal direction X by the total length of the sanitary napkin 1 in the longitudinal direction X. The "full length in the longitudinal direction X of the sanitary napkin 1" referred to herein refers to the length of the longitudinal front end 1F and the longitudinal rear end 1R of the sanitary napkin 1 in the natural state (state without external force applied) along the longitudinal direction X.

[0031] The absorbent body 4 includes at least an absorbent core 40. In the present embodiment, the absorbent core 40 has a shape that is long in the longitudinal direction X in a plan view, and the longitudinal direction thereof coincides with the longitudinal direction X of the sanitary napkin 1.

[0032] The absorbent core 40 constitutes the main body of the absorbent body 4, and can absorb and retain body fluids by containing a water-absorbent material. Examples of the water-absorbent material include water-absorbent fibers and water-absorbent polymers, and one of them can be used alone or in combination of two or more. Examples of the water-absorbent fiber include natural fibers such as wood pulp and hydrophilic fibers such as hydrophilic synthetic fibers. Examples of the water-absorbent polymer include any water-absorbent polymer used in such absorbent bodies in the past without particular limitation, and examples thereof include polymers or copolymers of acrylic acid or alkali metal salts of acrylic acid.

[0033] The absorbent core 40 may be a fiber accumulation type or a sheet type. The fiber accumulation type absorbent core typically has a structure in which an aggregate of fiber materials such as absorbent fibers is the main body, and absorbent polymer particles are carried on the aggregate as needed. The fiber accumulation type absorbent core can be manufactured in a conventional manner using a known fiber accumulation device having a rotating drum. On the other hand, the sheet type absorbent core typically has a structure in which absorbent polymer particles are fixed inside or on the surface of a fiber sheet, and is also referred to as an absorbent sheet. As the fiber sheet, for example, paper, nonwoven fabric, etc. can be used. The sheet type absorbent core is thinner and softer than the fiber accumulation type absorbent core. The sheet type absorbent core may, for example, have a structure in which absorbent polymer particles are arranged between two opposing fiber sheets.

[0034] In this embodiment, if Figure 2 As shown, the absorbent body 4 includes, in addition to the absorbent core 40, a liquid-permeable core sheet 41 covering the outer surface (skin-opposite side and non-skin-opposite side) of the absorbent core 40. The core sheet 41 is used for the purpose of improving the shape retention of the absorbent core 40, preventing the formation materials of the absorbent core 40 such as absorbent polymer particles from falling off, and is typically made of paper, permeable nonwoven fabric, etc. The core sheet 41 can be composed of only one sheet or a plurality of sheets. The absorbent core 40 and the core sheet 41 can also be joined by an adhesive such as a hot-melt adhesive.

[0035] In this embodiment, if Figure 2 As shown, the absorbent body 4 has a fiber block layer 42 mainly composed of fiber blocks 11 containing non-absorbent fibers in the excretion portion relative region M. Here, "mainly composed of fiber blocks" means that the fiber blocks 11 account for 90% by mass or more of all the fibers constituting the fiber block layer 42, preferably 95% by mass or more, and more preferably 100% by mass.

[0036] The fiber block layer 42 is covered by the core wrapping 41 together with the absorbent core 40. In addition, in the present embodiment, the fiber block layer 42 is arranged only in the entire area of ​​the excretion relative region M, and the arrangement area of ​​the fiber block layer 42 is the excretion relative region M. The non-arrangement area of ​​the fiber block layer 42 in the absorbent 4 (the portion located in the front region F and the rear region R of the absorbent 4) has the absorbent core 40 but does not have the fiber block layer 42. Therefore, the arrangement area of ​​the fiber block layer 42 is thicker and larger in volume than the non-arrangement area of ​​the fiber block layer 42. Due to the difference in thickness of the absorbent 4 caused by the presence or absence of the fiber block layer 42, the excretion relative region M, which is the arrangement area of ​​the fiber block layer 42, is raised on the skin-relative side compared to the front region F and the rear region R, which are the non-arrangement areas of the fiber block layer 42, forming a so-called middle high part.

[0037] The fiber mass 11 is a fiber aggregate in which a plurality of non-absorbent fibers are gathered into a mass and integrated, and exists in the absorbent body 4 (fiber mass layer 42) in a state of maintaining its shape. The fiber mass 11 mainly contributes to the improvement of the softness, cushioning, compression recovery, and shape retention of the absorbent body 4 due to its fiber aggregate shape.

[0038] As the non-absorbent fiber constituting the fiber mass 11, it is preferable to use a fiber (hydrophobic fiber) having a lower hydrophilicity than the absorbent fiber such as cellulose fiber used as the absorbent material in the absorbent core 40, and a specific example thereof is a synthetic fiber mainly composed of a thermoplastic resin. Since the fiber mass 11 is constituted by including the non-absorbent fiber, even when the fiber mass 11 comes into contact with body fluids, the characteristics such as softness of the fiber mass 11 can be fully exhibited.

[0039] The shape of the fiber block 11 is not particularly limited, and may be an amorphous shape, for example, a shaped fiber block such as a sheet obtained by cutting a synthetic fiber sheet into a certain size may be used. As such a shaped fiber block, for example, the fiber blocks described in Japanese Patent Publication No. 2019-063469, Japanese Patent Publication No. 2019-098157, and Japanese Patent Publication No. 2020-188918 can be appropriately used, and specifically, a fiber block having two opposing basic surfaces and a skeleton surface connecting the two basic surfaces can be appropriately used.

[0040] In the present embodiment, the fiber block layer 42 is a region where the fiber blocks 11 are present over the entire length of the transverse direction Y of the absorbent body 4. The fiber block layer 42 may be configured to include only the fiber blocks 11, but may also include a water-absorbent material in addition to the fiber blocks 11. The fiber block layer 42 including the water-absorbent material can absorb and retain body fluids, and can improve the absorption performance of the absorbent body 4. As the water-absorbent material used for the fiber block layer 42, any material that can be used for the absorbent core 40 can be used without particular limitation.

[0041] In this embodiment, if Figure 2 As shown, the fiber block layer 42 includes fiber blocks 11. In the fiber block layer 42, the fiber blocks 11 are intertwined (entangled) with each other, and in the fiber blocks 11 having the above-mentioned "two basic surfaces and a skeleton surface", the basic surfaces and the skeleton surfaces are intertwined with each other to form a three-dimensional entangled state. In addition, it is preferred that the fiber blocks 11 and the absorbent fibers 12 are intertwined with each other at the interface between the fiber block layer 42 and the absorbent core 40. By constructing the fiber block layer 42 in this way, the shape retention of the fiber block layer 42 is improved, and the absorbent body 4 having the fiber block layer 42 can be appropriately deformed with good tracking performance relative to the external forces received from all directions when worn, and has excellent softness, cushioning properties, and compression recovery properties. The sanitary napkin 1 having such an absorbent body 4 is easy to deform and recover relative to external forces, is not easy to twist, and has excellent fit relative to the wearer's body. The above-mentioned "entanglement" includes the following two forms: (i) a form in which the entangled objects (fiber blocks or fiber blocks and absorbent fibers) are not fused to each other, but their bonding state is maintained by the entanglement of the constituent fibers of the fiber blocks; and (ii) a form in which the fiber blocks or the fiber blocks and absorbent fibers are not bonded to each other in the natural state of the absorbent article (absorbent body) (a state in which no external force is applied), but when an external force is applied to the absorbent article (absorbent body), the fiber blocks or the fiber blocks and absorbent fibers can be bonded by the entanglement of the constituent fibers.

[0042] In this embodiment, in the discharge portion relative area M, as shown in FIG. Figure 2 As shown, the skin-opposite side of the absorbent body 4 is composed of an absorbent core 40 mainly composed of absorbent fibers 12 and absorbent polymer particles 13, and substantially does not contain fiber blocks 11. In contrast, the non-skin-opposite side of the absorbent body 4 is composed of a fiber block layer 42 mainly composed of fiber blocks 11.

[0043] More specifically, in the present embodiment, the ratio of the mass of the fiber mass to the total mass of the fiber mass and the water-absorbent fiber ("fiber mass / (fiber mass+water-absorbent fiber), hereinafter also referred to as fiber mass ratio") in the absorbent body 4 in the excretion portion relative region M is lower on the skin-opposing surface side than on the non-skin-opposing surface side. That is, in the present embodiment, in the excretion portion relative region M, the water-absorbent fiber is biasedly present on the skin-opposing surface side of the absorbent body 4, and the content of the fiber mass may be zero, whereas, on the non-skin-opposing surface side of the absorbent body 4, the fiber mass 11 is biasedly present, and the content of the water-absorbent fiber may be zero. As described above, in the absorbent body 4 in the excretion portion relative region M, the aforementioned size relationship "skin-opposing side of the absorbent body 4 < non-skin-opposing side of the absorbent body 4" holds true with respect to the fiber block ratio. As a result, through the action of the water-absorbent fibers biased toward the skin-opposing side of the absorbent body 4, the force (capillary force) of drawing body fluids into the absorbent body 4 is enhanced, thereby enhancing the liquid absorption. Furthermore, through the action of the fiber blocks 11 biased toward the non-skin-opposing side of the absorbent body 4, the cushioning properties of the absorbent body 4 can be enhanced.

[0044] The fiber mass ratio on the skin-opposing side of the absorber 4 is preferably 5% by mass or less, and more preferably 3% by mass or less, provided that the fiber mass ratio on the non-skin-opposing side of the absorber 4 is lower than that on the skin-opposing side of the absorber 4. The fiber mass ratio on the non-skin-opposing side of the absorber 4 is preferably 20% by mass or more, and more preferably 40% by mass or more, and preferably 100% by mass, provided that the fiber mass ratio on the skin-opposing side of the absorber 4 is higher than that on the skin-opposing side of the absorber 4. In addition, the "skin-opposing side of the absorber" referred to herein refers to the side including the skin-opposing side when the absorber 4 is divided into two equal parts in the thickness direction (the side relatively close to the wearer's skin), and the "non-skin-opposing side of the absorber" refers to the opposite side (the side relatively far from the wearer's skin).

[0045] like Figure 1 and Figure 3 As shown, the sanitary napkin 1 has wing portions 6 extending outward from the outer edge (peripheral edge) of the absorbent body 4 and forming the outline of the sanitary napkin 1. The wing portions 6 are regions where the absorbent body 4 is not arranged.

[0046] In the present embodiment, the wing portion 6 is composed of components arranged in a manner that the outer edge of the absorbent body 4 is spanned inside and outside, and in the illustrated manner, is composed of one or more of the front sheet 2, the back sheet 3, and the side sheet 5. The multiple components constituting the wing portion 6 are bonded to each other by bonding means such as adhesives, heat-based or ultrasonic welding, etc. In the present embodiment, an edge sealing portion 60 is formed in which the outer edge portion of the wing portion 6 (the outer edge of the wing portion 6 and its vicinity) is welded over the entire circumference.

[0047] The wing portion 6 includes: a pair of side wing portions 6S, 6S located at the outer side of the transverse direction Y than a pair of imaginary straight lines VL, VL passing through the outermost end of the transverse direction Y of the absorbent body 4 and extending in the longitudinal direction X; and a front wing portion 6F located at the inner side of the transverse direction Y than the reference and located in the front area F; and a rear wing portion 6R located at the inner side of the transverse direction Y than the reference and located in the rear area R.

[0048] The “lateral outermost end of the absorbent body” is the portion located most outside in the lateral direction Y on one side and the other side of the absorbent body 4 , and in the present embodiment, is a pair of side edges 4S, 4S of the absorbent body 4 along the longitudinal direction.

[0049] The side wing portion 6S is located outside the virtual straight line VL in the transverse direction Y, and the absorber 4 is required to be located inside the side wing portion 6S in the transverse direction Y. That is, the side wing portion of the present invention overlaps with the transverse projection image of the absorber.

[0050] The sanitary napkin 1 is a pad-type absorbent article. In the present utility model, "pad-type absorbent article" refers to an absorbent article that can be placed on the inner surface of clothing such as shorts for use, and does not include absorbent articles that can be used alone like diapers. The sanitary napkin 1 of this embodiment does not have a fin portion. Here, as mentioned above, the "fin portion" is a portion that is artificially folded to the non-skin-opposite side of the crotch using fingers when the absorbent article is fixed to the skin-opposite side of the crotch of clothing such as shorts. Typically, if the sanitary napkin 1 is taken as an example, the portion of the side wing portion 6S located in the excretion portion relative area M is a portion that extends more significantly to the outside of the horizontal direction Y than the peripheral portion. In addition, the fin portion typically has a fixing portion such as an adhesive, which is used to fix the crotch when the fin portion is folded to the non-skin-opposite side of the crotch of the clothing. The sanitary napkin 1 does not have a portion that is folded to the non-skin-opposite side of the clothing by artificial operation using fingers when wearing, such as the fin portion.

[0051] In addition, in the sanitary napkin 1, if Figure 1 and Figure 3 As shown, a portion of the outer edge of the side wing portion 6S has a curved portion 63 that protrudes outward in the transverse direction Y and extends outward in the transverse direction Y more than the peripheral portion, but the side wing portion 6S is not a structure that is folded to the non-skin opposite side of the clothing by manual operation using fingers when the sanitary napkin 1 is fixed to the clothing like the fin portion, and can be clearly distinguished from the fin portion.

[0052] In the sanitary napkin 1, the distance G1 (see Figure 1) is typically about 35 mm at most. In contrast, in absorbent articles having fins, from the perspective of facilitating the manual bending operation of the fins using fingers, the lateral length of the fins, that is, the distance between the front end of the fins (lateral outermost end) and the absorbent body, usually significantly exceeds the typical maximum value of 35 mm of the above-mentioned distance G1.

[0053] One of the main features of the sanitary napkin 1 is its outer shape, in particular, the outer shape of the side wings 6S that form the contour of the sanitary napkin 1 along the longitudinal direction X. Figure 1 and Figure 3 As shown, the outer edge of the side wing portion 6S, more specifically the side edge of the side wing portion 6S along the longitudinal direction X, has a front narrowing portion 61 located in the front area F and a rear narrowing portion 62 located in the rear area R, and the portion sandwiched by the two narrowing portions 61 and 62 has a curved portion 63 that protrudes outward in the transverse direction Y.

[0054] In the present embodiment, the two narrowed portions 61, 62 and the curved portion 63 are arranged in a pair on both sides of the transverse direction Y with the transverse center line CLy as a reference. The curved portion 63 extends over the entire length of the longitudinal direction X of the excretion portion relative area M. There is no inflection point in the portion of the outer edge of the side wing portion 6S sandwiched by the two narrowed portions 61, 62. Both the two narrowed portions 61, 62 are bent inwardly in the transverse direction Y and are formed by a curve. In the present utility model, either or both of the two narrowed portions 61, 62 may be bent inwardly in the transverse direction Y and be formed by a straight line.

[0055] like Figure 3 As shown, a fixing portion 7 for fixing the sanitary napkin 1 to the wearer's clothing is arranged on the non-skin-opposite surface of the sanitary napkin 1. As the fixing portion 7, a fixing portion used in the prior art as a means for fixing such an absorbent article to clothing such as shorts can be used without particular limitation, for example, an adhesive, a pressure-sensitive adhesive, etc. can be used.

[0056] Another main feature of the sanitary napkin 1 of this embodiment is that the fixing portion 7 is arranged in a region overlapping the absorbent body 4 in a plan view and is not arranged in the wings 6 (the side wings 6S, the front wings 6F, and the rear wings 6R).

[0057] The sanitary napkin 1 having the above-mentioned features eliminates the problem of complicated wearing operation that is unique to absorbent articles having a conventional fin portion, specifically a fin portion having a fixing portion and fixed to the non-skin-opposing surface of clothing such as shorts, and can be easily worn. That is, when the sanitary napkin 1 is worn on the crotch of the wearer, the shorts are usually first passed through the legs of the wearer, and before the shorts are attached to the crotch, the sanitary napkin 1 is fixed to the skin-opposing surface (inner surface) of the crotch of the shorts by means of the fixing portion 7, and then the shorts are pulled toward the crotch side and the sanitary napkin 1 is worn on the crotch. Figure 4, the sanitary napkin 1 is shown in the state of being worn on the crotch of the wearer. The sanitary napkin 1 is fixed to the skin-opposite surface of the crotch 21 of the shorts 20 by means of the fixing part 7, and a part of the side wing 6S (curved part 63 and its vicinity) is naturally bent along the side edge of the crotch 21 to the opposite side of the crotch side, and is arranged along the thigh 30 of the wearer. The bent part of the side wing 6S of the sanitary napkin 1 in this wearing state can prevent the sanitary napkin 1 from being displaced from the appropriate position during wearing, improve the fit of the sanitary napkin 1 to the body of the wearer, and prevent the leakage of excrement. In the sanitary napkin 1, when the side wing 6S is bent like this, the burden of the manual bending operation using fingers required for the fin part can be reduced. Such a convenient function can be greatly exerted under the action of the two narrowed parts 61 and 62 arranged on the outer edge of the side wing 6S. That is, by separating the front narrowing portion 61 and the rear narrowing portion 62 at the outer edge of the side wing portion 6S in a manner of sandwiching the curved portion 63 therebetween, the curved portion 63 of the side wing portion 6S and its vicinity are easily deformed when subjected to external force. Therefore, as long as the sanitary napkin 1 is fixed to an appropriate fixing position of the crotch portion 21 so that the curved portion 63 and its vicinity extend from the side edge of the crotch portion 21, the curved portion 63 and its vicinity extending from the side edge of the crotch portion 21 can be easily deformed by the external force acting through the wearer's legs (thighs) simply by pulling the shorts 20 toward the crotch side.

[0058] In addition, the sanitary napkin 1 does not have a fixing portion on the side wing portion 6S. If the side wing portion 6S is provided with a fixing portion, for example, when the sanitary napkin 1 is fixed to the crotch of shorts, the side wing portion 6S may be bent unintentionally, and there may be an undesirable situation that a part of the overlapping side wing portion 6S is joined to another part via the fixing portion due to the bending, but since the sanitary napkin 1 does not have a fixing portion on the side wing portion 6S, such an undesirable situation does not occur, and the operability is excellent, which also contributes to the realization of easy wearing.

[0059] In addition, the characteristic shape of the side wing 6S can not only make the wearing operation of the sanitary napkin 1 simple, but also prevent deformation such as distortion during wearing of the sanitary napkin 1 that may cause discomfort during wearing, and contribute to improving the fit and leakage resistance. As a typical fixing object of the sanitary napkin 1, the usual shorts are generally designed to be widened in length (width) from the crotch to the front and back, and in particular, the curvature of the leg hole is designed to be larger from the vicinity of the boundary between the crotch and the front body to the back body. By fixing the sanitary napkin 1 to the appropriate position of the crotch relative to such shorts, the two narrowing parts 61 and 62 of the outer edge of the side wing 6S are arranged along the leg holes of the shorts, which can buffer the distortion of the side wing 6S caused by the wearer's movement at the front and back body of the shorts. As a result, it is possible to prevent the sanitary napkin 1 from deviating from the appropriate position during wearing, and the excretion part of the sanitary napkin 1 is closely attached to the wearer's body with good tracking performance relative to the area M, which can prevent the leakage of excrement.

[0060] In particular, in this embodiment, as described above, Figure 2 As shown, since the absorbent body 4 has the fiber block layer 42 mainly composed of the fiber block 11 having excellent softness and cushioning properties in the excretion portion opposing region M, even if the side wing portion 6S is twisted when the sanitary napkin 1 is worn, the twist of the side wing portion 6S is not easily propagated to the arrangement region of the fiber block layer 42. Therefore, according to this embodiment, the twist prevention effect of the side wing portion 6S by the two narrowed portions 61 and 62 and the twist prevention effect of the absorbent body 4 by the fiber block layer 42 complement each other, and the deformation accompanied by the discomfort when the sanitary napkin 1 is worn can be further reliably prevented, and the leakage prevention performance can be further improved.

[0061] The fiber block layer 42 preferably exists only in the region between the front narrowing portion 61 and the rear narrowing portion 62 in the longitudinal direction X. The region sandwiched by the two narrowing portions 61 and 62 in the sanitary napkin 1 includes the excretion portion facing region M. Since this is a region where the fit and wearing feeling of the sanitary napkin 1 are particularly important, the fiber block layer 42 having excellent softness and the like is arranged in this region, and the important characteristics can be further improved. On the other hand, even if the fiber block layer 42 exists in a position forward of the front narrowing portion 61 in the longitudinal direction X or rearward of the rear narrowing portion 62 in the longitudinal direction X, the effect of the fiber block layer 42 cannot be fully enjoyed, and there is no meaning in using the fiber block layer 42.

[0062] From the viewpoint of more reliably exerting the effect of the side wing portion 6S, it is preferred that there is a gap G1 (see FIG. 1 ) between the outer edge (the side edge along the longitudinal direction X) of the side wing portion 6S and the transverse direction Y of the absorbent body 4 in the excretion portion relative region M. Figure 1) is the largest part. In addition, its maximum interval G1max is preferably 10 mm or more, more preferably 20 mm or more, and preferably 35 mm or less, more preferably 30 mm or less. The part with the maximum interval G1max is typically a part having a curved portion 63 sandwiched by two narrowed portions 61, 62 in the side wing portion 6S, which is located in the excretion portion relative area M and has a maximum interval G1max with the absorbent body 4 in the above range. Therefore, when the sanitary napkin 1 is worn, the curved portion 63 extending from the side edge of the crotch of the shorts and its vicinity are easily deformed in a manner along the wearer's thigh, so that it can more effectively prevent accidental deformation of the sanitary napkin 1 such as wrinkles and twists during wearing.

[0063] From the viewpoint of more reliably exhibiting the effects of the side wings 6S, the dimensions of each part of the sanitary napkin 1 are preferably set as follows.

[0064] The front narrowed portion 61 is preferably disposed at a position 40 mm or more, more preferably 50 mm or more, and preferably within 150 mm, more preferably within 140 mm, from the longitudinal front end 1F of the sanitary napkin 1 in the longitudinal direction X rearward.

[0065] The rear narrowed portion 62 is preferably disposed at a position 100 mm or more, more preferably 120 mm or more, and preferably within 350 mm, more preferably within 330 mm, from the longitudinal rear end 1R of the sanitary napkin 1 in the longitudinal direction X forward.

[0066] The distance G2 between the front narrowing portion 61 and the rear narrowing portion 62 in the longitudinal direction X (see Figure 1 ) is preferably greater than 40 mm, more preferably greater than 60 mm, and is preferably less than 250 mm, more preferably less than 230 mm.

[0067] The maximum length (maximum width) of the sanitary napkin 1 in the transverse direction Y is preferably 60 mm or more, more preferably 80 mm or more, and preferably 200 mm or less, more preferably 180 mm or less. The portion of the sanitary napkin 1 having the maximum width is typically present in the excretion portion opposite region M, which is the portion where the convex top of the curved portion 63 of the side wing portion 6S exists in the illustrated manner.

[0068] The total length of the sanitary napkin 1 in the longitudinal direction X is preferably 100 mm or more, more preferably 140 mm or more, and is preferably 450 mm or less, more preferably 420 mm or less.

[0069] The length (width) of the absorber 4 in the transverse direction Y is preferably such that the portion of the absorber 4 co-located with the front narrowed portion 61 in the longitudinal direction X is shorter than the portion of the absorber 4 co-located with the rear narrowed portion 62 in the longitudinal direction X. Figure 1In the figure, reference numeral W1 represents the former width, and reference numeral W2 represents the latter width, and it is preferable that a magnitude relationship of width W1<width W2 is established.

[0070] In addition to the above-mentioned size relationship, it is also preferred that the interval G1 between the outer edge of the side wing portion 6S and the absorbent body 4 in the transverse direction Y is substantially the same in the portion where the front narrowing portion 61 is located and the portion where the rear narrowing portion 62 is located. The "interval G1 is substantially the same" mentioned here means that the absolute value of the difference between the interval G1 in the portion where the front narrowing portion 61 is located and the interval G1 in the portion where the rear narrowing portion 62 is located is within 3 mm, preferably within 1 mm.

[0071] In the shorts which are typical objects to which the sanitary napkin 1 is attached, the curvature of the leg holes from the crotch to the front body is usually greater than the curvature of the leg holes from the crotch to the back body. Therefore, for example, when the wearer is in a sitting position, the pressure generated by the wearer's thighs is likely to be greater on the front body side of the shorts than on the back body side of the shorts. Therefore, in the sanitary napkin 1 attached to the shorts, the external force generated by the wearer's body movement is particularly likely to be applied to the front area F, and there is a tendency that unintended deformations such as twisting and wrinkling are easily generated in the front area F. In this regard, as described above, with respect to the width of the absorbent body 4, the magnitude relationship of W1<W2 is established, and the interval G1 is substantially the same at the positions of the two narrowed parts 61 and 62. Therefore, it is more difficult to generate unintended deformations such as twisting and wrinkling in both the side wing part 6S and the absorbent body 4 with the area from the front narrowed part 61 to the rear narrowed part 62 (excretion part relative area M) as the center.

[0072] The ratio of the width W1 to the width W2 of the absorber 4 is preferably 0.50 or more, more preferably 0.60 or more, and is preferably 0.95 or less, more preferably 0.90 or less, when expressed as W1 / W2, on the premise that W1<W2.

[0073] The width W1 of the portion of the absorbent body 4 that is located at the same position as the front narrowed portion 61 in the longitudinal direction X (see Figure 1 ) is preferably 37 mm or more, more preferably 47 mm or more, and is preferably 90 mm or less, more preferably 80 mm or less, on the premise that it is shorter than width W2.

[0074] The width W2 of the portion of the absorber 4 that is located at the same position as the rear narrowed portion 62 in the longitudinal direction X (see Figure 1 ) is preferably longer than width W1, preferably greater than 40 mm, more preferably greater than 50 mm, and preferably less than 90 mm, more preferably less than 85 mm.

[0075] The interval G1 between the front narrowed portion 61 or the rear narrowed portion 62 and the absorber 4 in the transverse direction Y is preferably 3 mm or more, more preferably 5 mm or more, and is preferably 35 mm or less, more preferably 30 mm or less.

[0076] In this embodiment, if Figure 3 As shown, in the region (absorbent body arrangement region) where the fixing portion 7 overlaps with the absorbent body 4 when viewed from above, a plurality of fixing portions 7 are arranged in a manner extending in the transverse direction Y and spaced apart in the longitudinal direction X. From the viewpoint of ensuring the fixing force of the sanitary napkin 1 relative to clothing such as shorts and making the sanitary napkin 1 follow the body of the wearer well to obtain a good wearing feeling, the length (width) of the fixing portion 7 in the transverse direction Y in at least a portion of the front region F and the rear region R is preferably shorter than the length (width) of the fixing portion 7 in the transverse direction Y in the excretion portion relative region M. In the present embodiment, the widths W5 and W3 of the fixing portions 7 in a portion of the front region F (the front tapered portion 46 described later) and a portion of the rear region R (the rear tapered portion 45 described later) are shorter than the width W4 of the fixing portion 7 in the excretion portion relative region M.

[0077] In this embodiment, if Figure 3 As shown, the absorbent body 4 has a rear tapered portion 45 at a position behind the rear tapered portion 62 in the longitudinal direction X, and the length (width) of the transverse direction Y of the absorbent body 4 gradually decreases as it goes toward the longitudinal rear end 4R of the absorbent body 4. The fixing portion 7 arranged in the area overlapping with the rear tapered portion 45 when viewed from above is shorter in the transverse direction Y than the fixing portion 7 arranged in the area sandwiched by the front tapered portion 61 and the rear tapered portion 62. In the figure, the reference numeral W3 represents the width of the former, and the reference numeral W4 represents the width of the latter. In the present embodiment, the size relationship of width W3 < width W4 holds.

[0078] In particular, when the wearer of the sanitary napkin 1 takes a sitting posture for a long time, body pressure is easily applied to the rear region R of the sanitary napkin 1, and unintentional deformation such as twisting is easily generated in the rear region R. However, the rear tapered portion 45 reduces the area to which the body pressure from the wearer's buttocks is applied, and in relation to the width of the fixing portion 7 in the rear region R, the above-mentioned size relationship of width W3 < width W4 holds, thereby being able to more reliably prevent twisting and displacement of the rear region R during wear.

[0079] In this embodiment, if Figure 3As shown, the fixing portion 7 located at the same position as the rear narrowing portion 62 in the longitudinal direction X has a longer length (width) in the transverse direction Y than the fixing portion 7 arranged in the region overlapping with the rear narrowing portion 45 when viewed from above. That is, the magnitude relationship of the width W4 of the former > the width W3 of the latter holds. As a result, the fixing force of the sanitary napkin 1 to clothing such as shorts, especially in the rear region R, is further improved, and the distortion and displacement of the rear region R during wearing can be more reliably prevented.

[0080] In addition, in this embodiment, if Figure 3 As shown, the absorbent body 4 has a front tapered portion 46 at a position forward of the front narrowing portion 61 in the longitudinal direction X, wherein the length (width) of the transverse direction Y of the absorbent body 4 gradually decreases as it goes toward the longitudinal front end 4F of the absorbent body 4. The fixing portion 7 arranged in the area overlapping with the front tapered portion 46 when viewed from above is shorter in the transverse direction (width) than the fixing portion 7 arranged in the area sandwiched by the front tapered portion 61 and the rear tapered portion 62. In the figure, reference numeral W5 represents the width of the former, and reference numeral W4 represents the width of the latter, and in the present embodiment, the magnitude relationship of width W5<width W4 holds. In this way, by utilizing the front tapered portion 46, even if the wearer performs an action such as twisting the thigh, it is not easy to apply pressure to the front region F. In association with the width of the fixing portion 7 in the front region F, the magnitude relationship of width W5<width W4 holds, thereby further reliably preventing the distortion and displacement of the front region F during wearing.

[0081] In addition, in this embodiment, if Figure 3 As shown, the fixing portion 7 located at the same position as the front narrowing portion 61 in the longitudinal direction X has a longer length (width) in the transverse direction Y than the fixing portion 7 arranged in the region overlapping the front narrowing portion 46 when viewed from above. That is, the magnitude relationship of the width W4 of the former > the width W5 of the latter holds. As a result, the fixing force of the sanitary napkin 1 to clothing such as shorts, especially in the front region F, is further improved, and the distortion and displacement of the front region F during wearing can be more reliably prevented.

[0082] In the present embodiment, a plurality of fixing portions 7 are arranged at intervals in the longitudinal direction X in the region overlapping with the rear narrowing portion 45 in a plan view, and the widths W3 of the plurality of fixing portions are the same. In addition, a plurality of fixing portions 7 are arranged at intervals in the longitudinal direction X in the region sandwiched by the front narrowing portion 61 and the rear narrowing portion 62, and the widths W4 of the plurality of fixing portions are the same. In addition, in the region overlapping with the front narrowing portion 46 in a plan view, a plurality of fixing portions 7 are arranged at intervals in the longitudinal direction X, and the widths W5 of the plurality of fixing portions are the same.

[0083] Furthermore, when the widths W3 of the plurality of fixing portions 7 arranged in the region overlapping the rear narrowing portion 45 in a plan view are different from each other, the maximum value among the plurality of widths W3 is set as the width W3 of the fixing portion 7 arranged in the region. Furthermore, when the widths W4 of the plurality of fixing portions 7 arranged in the region sandwiched by the front narrowing portion 61 and the rear narrowing portion 62 are different from each other, the maximum value among the plurality of widths W4 is set as the width W4 of the fixing portion 7 arranged in the region. Furthermore, when the widths W5 of the plurality of fixing portions 7 arranged in the region overlapping the front narrowing portion 46 in a plan view are different from each other, the maximum value among the plurality of widths W5 is set as the width W5 of the fixing portion 7 arranged in the region.

[0084] The ratio of the width W3 to the width W4 of the fixing portion 7 is preferably 0.3 or more, more preferably 0.5 or more, and is preferably 0.9 or less, more preferably 0.8 or less, when expressed as W3 / W4, assuming that W3<W4.

[0085] The ratio of the width W5 to the width W4 of the fixing portion 7 is preferably 0.5 or more, more preferably 0.6 or more, and is preferably 0.95 or less, more preferably 0.90 or less, when expressed as W5 / W4, assuming that W5<W4.

[0086] The width W4 (see FIG. 1 ) of the fixing portion 7 disposed in the region sandwiched between the front narrowing portion 61 and the rear narrowing portion 62 is Figure 3 ) is based on the premise that it is less than the width of the absorbent body 4 (the length in the horizontal direction Y), preferably greater than 40 mm, more preferably greater than 50 mm, and preferably less than 80 mm, more preferably less than 70 mm.

[0087] In this embodiment, if Figure 1 and Figure 3 As shown, the outer edge of the wing 6 (side wing 6S, front wing 6F and rear wing 6R) has: a front convex portion 64, which is located at a position forward of the front narrowing portion 61 in the longitudinal direction X and connected to the front narrowing portion 61, and protrudes in the direction away from the absorbent body 4; and a rear convex portion 65, which is located at a position rearward of the rear narrowing portion 62 in the longitudinal direction X and connected to the rear narrowing portion 62, and protrudes in the direction away from the absorbent body 4. The portion of the outer edge of the wing 6 from the rear convex portion 65 to the rear narrowing portion 62 has a larger curvature radius than the portion of the outer edge of the wing 6 from the front convex portion 64 to the front narrowing portion 61. That is, in the present embodiment, in the portion from the rear convex portion 65 to the rear narrowed portion 62, the outer edge of the wing portion 6 is bent relatively gently (with a relatively small curvature) toward the inner side of the sanitary napkin 1. In contrast, in the portion from the front convex portion 64 to the front narrowed portion 61, the bending is relatively sharp (with a relatively large curvature).

[0088] By forming such a structure at the outer edge of the wing portion 6, the sanitary napkin 1 can be more reliably prevented from being twisted or shifted during wearing. In particular, by making the radius of curvature of the portion from the rear convex portion 65 to the rear narrowed portion 62 relatively large, for example, as a result of the wearer of the sanitary napkin 1 sitting for a long time, even if the rear region R is twisted, the twist of the rear region R is unlikely to propagate to the front region F. In addition, by making the radius of curvature of the portion from the front convex portion 64 to the front narrowed portion 61 relatively small, the front region F is easily attached to the portion closer to the ventral side than the above-mentioned excretion part such as the vaginal opening of the wearer, and is unlikely to be twisted or wrinkled.

[0089] As mentioned above, although this invention was demonstrated based on the preferred embodiment, this invention is not limited at all to the said embodiment, It can change suitably within the range which does not deviate from the summary of this invention.

[0090] For example, a recessed portion formed by the front sheet 2 and the absorbent body 4 forming the skin-facing surface being integrally recessed toward the non-skin-facing surface (back sheet 3) may be formed on the skin-facing surface of the sanitary napkin 1. In this case, the recessed portion may also include a linear longitudinal recessed portion extending in the longitudinal direction X and / or a linear transverse recessed portion extending in the transverse direction Y.

[0091] The absorbent article of the present invention includes articles for absorbing body fluids (menstrual blood, urine, soft stool, sweat, etc.) discharged from the human body, and is not limited to the above-mentioned sanitary napkin.

[0092] The following additional remarks are further disclosed regarding the above-mentioned embodiments of the present invention.

[0093] <1>

[0094] A pad-type absorbent article, which has an absorbent body capable of absorbing and retaining body fluids, has a longitudinal direction corresponding to the front-back direction of a wearer and a transverse direction orthogonal to the longitudinal direction, and has an excretion portion-opposing area arranged opposite to the excretion portion of the wearer when worn, a front area arranged at a position forward of the excretion portion-opposing area in the longitudinal direction, and a rear area arranged at a position rearward of the excretion portion-opposing area in the longitudinal direction, wherein:

[0095] The absorbent article has a wing portion extending outward from the outer edge of the absorbent body to form the outline of the absorbent article, the wing portion having a pair of side wing portions located at a position outward in the transverse direction relative to a pair of imaginary straight lines extending in the longitudinal direction and passing through the outermost end of the transverse direction of the absorbent body as a reference,

[0096] The outer edge of the side wing portion has a front narrowing portion located in the front area and a rear narrowing portion located in the rear area, and a portion of the outer edge of the side wing portion sandwiched by the front narrowing portion and the rear narrowing portion has a curved portion convex to the outside in the lateral direction,

[0097] A fixing portion for fixing the absorbent article to clothing of a wearer is arranged on the non-skin facing surface of the absorbent article, and the fixing portion is arranged in a region overlapping with the absorbent body in a plan view.

[0098] <2>

[0099] The absorbent article according to <1>, wherein:

[0100] The fixing portion is not arranged on the wing portion.

[0101] <3>

[0102] The absorbent article according to <1> or <2>, wherein:

[0103] The absorbent article does not have wing portions.

[0104] <4>

[0105] The absorbent article according to any one of <1> to <3>, wherein:

[0106] In the excretion portion facing region, there is a portion where the distance (G1) between the outer edge of the side wing portion and the absorbent body in the lateral direction is the largest, and the maximum distance is not less than 10 mm and not more than 35 mm.

[0107] <5>

[0108] The absorbent article as described in <4>, wherein:

[0109] The maximum interval is greater than or equal to 10 mm and less than or equal to 35 mm, and preferably greater than or equal to 20 mm and less than or equal to 30 mm.

[0110] <6>

[0111] The absorbent article according to any one of <1> to <5>, wherein:

[0112] Regarding the transverse length of the absorbent body, a portion of the absorbent body located at the same position as the front narrowed portion in the longitudinal direction is shorter than a portion of the absorbent body located at the same position as the rear narrowed portion in the longitudinal direction.

[0113] Regarding the interval in the lateral direction between the outer edge of the side wing portion and the absorbent body, the difference between the portion where the front narrowed portion is located and the portion where the rear narrowed portion is located is within 3 mm.

[0114] <7>

[0115] The absorbent article as described in <6>, wherein:

[0116] The ratio of the transverse length (W1) of the portion of the absorbent body located at the same position as the front narrowing portion in the longitudinal direction to the transverse length (W2) of the portion of the absorbent body located at the same position as the rear narrowing portion in the longitudinal direction, when expressed as W1 / W2, is greater than 0.50 and less than 0.95, and preferably greater than 0.60 and less than 0.90.

[0117] <8>

[0118] The absorbent article according to any one of <1> to <7>, wherein:

[0119] The absorbent body has a rear narrowing portion at a position rearward in the longitudinal direction relative to the rear narrowing portion, wherein the length of the absorbent body in the transverse direction gradually decreases toward the rear end in the longitudinal direction of the absorbent body.

[0120] The fixing portion disposed in a region overlapping the rear narrowed portion in a plan view has a shorter length in the lateral direction than the fixing portion disposed in a region sandwiched between the front narrowed portion and the rear narrowed portion.

[0121] <9>

[0122] The absorbent article as described in <8>, wherein:

[0123] The ratio of the lateral length (W3) of the fixing portion arranged in the area overlapping with the rear narrowing portion when viewed from above to the lateral length (W4) of the fixing portion arranged in the area sandwiched by the front narrowing portion and the rear narrowing portion, when expressed as W3 / W4, is greater than 0.3 and less than 0.9, and preferably greater than 0.5 and less than 0.8.

[0124] <10>

[0125] The absorbent article as described in <8> or <9>, wherein:

[0126] The fixing portion located at the same position as the rear narrowed portion in the longitudinal direction has a longer length in the lateral direction than the fixing portion arranged in a region overlapping the rear narrowed portion in a plan view.

[0127] <11>

[0128] The absorbent article according to any one of <1> to <10>, wherein:

[0129] The absorbent body has a front tapered portion at a position forward of the longitudinal direction relative to the front narrowed portion, wherein the transverse length of the absorbent body gradually decreases toward the longitudinal front end of the absorbent body.

[0130] The fixing portion disposed in a region overlapping the front narrowed portion in a plan view has a shorter length in the lateral direction than the fixing portion disposed in a region sandwiched between the front narrowed portion and the rear narrowed portion.

[0131] <12>

[0132] The absorbent article as described in <11>, wherein:

[0133] The ratio of the lateral length (W5) of the fixing portion arranged in the area overlapping with the front narrowing portion when viewed from above to the lateral length (W4) of the fixing portion arranged in the area sandwiched by the front narrowing portion and the rear narrowing portion, when expressed as W5 / W4, is greater than 0.5 and less than 0.95, and preferably greater than 0.6 and less than 0.90.

[0134] <13>

[0135] The absorbent article as described in <11> or <12>, wherein:

[0136] The fixing portion located at the same position as the front narrowed portion in the longitudinal direction has a longer length in the lateral direction than the fixing portion arranged in a region overlapping the front narrowed portion in a plan view.

[0137] <14>

[0138] The absorbent article according to any one of <1> to <13>, wherein:

[0139] The outer edge of the wing portion includes: a front convex portion, which is located at a position closer to the front of the longitudinal direction than the front narrowed portion and is connected to the front narrowed portion, and protrudes in a direction away from the absorbent body; and a rear convex portion, which is located at a position closer to the rear of the longitudinal direction than the rear narrowed portion and is connected to the rear narrowed portion, and protrudes in a direction away from the absorbent body.

[0140] A portion of the outer edge of the wing portion from the rear convex portion to the rear narrowed portion has a larger radius of curvature than a portion of the outer edge of the wing portion from the front convex portion to the front narrowed portion.

[0141] <15>

[0142] The absorbent article according to any one of <1> to <14>, wherein:

[0143] The absorbent body includes a fiber mass layer mainly composed of fiber masses containing non-water-absorbent fibers in the region facing the excretion part.

[0144] <16>

[0145] The absorbent article as described in <15>, wherein:

[0146] The fiber block layer exists only in a region located between the front narrowing portion and the rear narrowing portion in the longitudinal direction.

[0147] <17>

[0148] The absorbent article according to any one of <1> to <16>, wherein:

[0149] The fixing portion is arranged in a plurality of strips in a region overlapping the absorbent body in a plan view so as to extend in the lateral direction and be spaced apart in the longitudinal direction.

[0150] The transverse length of the fixing portion in at least a portion of both the front region and the rear region is shorter than the transverse length of the fixing portion in the region opposite to the excretion portion.

[0151] Industrial Applicability

[0152] According to the utility model, it is possible to provide an absorbent article which is easy to wear, is unlikely to be wrinkled or twisted during wearing, and has excellent leakage prevention properties.

Claims

1. A pad-type absorbent article, which has an absorbent body capable of absorbing and retaining body fluids, has a longitudinal direction corresponding to the front-back direction of a wearer and a transverse direction orthogonal to the longitudinal direction, and has an excretion portion-opposing region arranged opposite to the excretion portion of the wearer when worn, a front region arranged at a position forward of the excretion portion-opposing region in the longitudinal direction, and a rear region arranged at a position rearward of the excretion portion-opposing region in the longitudinal direction, wherein: The absorbent article has a wing portion extending outward from the outer edge of the absorbent body to form the outline of the absorbent article, the wing portion having a pair of side wing portions located at a position outward in the transverse direction relative to a pair of imaginary straight lines extending in the longitudinal direction and passing through the outermost end of the transverse direction of the absorbent body as a reference, The outer edge of the side wing portion has a front narrowing portion located in the front area and a rear narrowing portion located in the rear area, and a portion of the outer edge of the side wing portion sandwiched by the front narrowing portion and the rear narrowing portion has a curved portion convex to the outside in the lateral direction, A fixing portion for fixing the absorbent article to clothing of a wearer is arranged on the non-skin facing surface of the absorbent article, and the fixing portion is arranged in a region overlapping with the absorbent body in a plan view.

2. The pad-type absorbent article according to claim 1, characterized in that: The fixing portion is not arranged on the wing portion.

3. The pad-type absorbent article according to claim 1 or 2, characterized in that: The absorbent article does not have a fin portion.

4. The pad-type absorbent article according to claim 1 or 2, characterized in that: In the excretion portion facing region, there is a portion where the distance between the outer edge of the side wing portion and the absorbent body in the lateral direction is the largest, and the maximum distance is not less than 10 mm and not more than 35 mm.

5. The pad-type absorbent article according to claim 1 or 2, characterized in that: Regarding the transverse length of the absorbent body, a portion of the absorbent body located at the same position as the front narrowed portion in the longitudinal direction is shorter than a portion of the absorbent body located at the same position as the rear narrowed portion in the longitudinal direction. Regarding the interval in the lateral direction between the outer edge of the side wing portion and the absorbent body, the difference between the portion where the front narrowed portion is located and the portion where the rear narrowed portion is located is within 3 mm.

6. The pad-type absorbent article according to claim 5, characterized in that: The ratio of the lateral length W1 of the portion of the absorbent body located at the same position as the front narrowing portion in the longitudinal direction to the lateral length W2 of the portion of the absorbent body located at the same position as the rear narrowing portion in the longitudinal direction is greater than 0.50 and less than 0.95 when expressed as W1 / W2.

7. The pad-type absorbent article according to claim 1 or 2, characterized in that: The absorbent body has a rear narrowing portion at a position rearward in the longitudinal direction relative to the rear narrowing portion, wherein the length of the absorbent body in the transverse direction gradually decreases toward the rear end in the longitudinal direction of the absorbent body. The fixing portion disposed in a region overlapping the rear narrowed portion in a plan view has a shorter length in the lateral direction than the fixing portion disposed in a region sandwiched between the front narrowed portion and the rear narrowed portion.

8. The pad-type absorbent article according to claim 7, characterized in that: The ratio of the lateral length W3 of the fixing portion arranged in the area overlapping with the rear narrowing portion when viewed from above and the lateral length W4 of the fixing portion arranged in the area sandwiched by the front narrowing portion and the rear narrowing portion is greater than 0.3 and less than 0.9 when expressed as W3 / W4.

9. The pad-type absorbent article according to claim 7, characterized in that: The fixing portion located at the same position as the rear narrowed portion in the longitudinal direction has a longer length in the lateral direction than the fixing portion arranged in a region overlapping the rear narrowed portion in a plan view.

10. The pad-type absorbent article according to claim 1 or 2, characterized in that: The absorbent body has a front tapered portion at a position forward of the longitudinal direction relative to the front narrowed portion, wherein the transverse length of the absorbent body gradually decreases toward the longitudinal front end of the absorbent body. The fixing portion disposed in a region overlapping the front narrowed portion in a plan view has a shorter length in the lateral direction than the fixing portion disposed in a region sandwiched between the front narrowed portion and the rear narrowed portion.

11. The pad-type absorbent article according to claim 10, characterized in that: The ratio of the lateral length W5 of the fixing portion arranged in the area overlapping with the front narrowing portion when viewed from above, and the lateral length W4 of the fixing portion arranged in the area sandwiched by the front narrowing portion and the rear narrowing portion, when expressed as W5 / W4, is greater than 0.5 and less than 0.

95.

12. The pad-type absorbent article according to claim 10, characterized in that: The fixing portion located at the same position as the front narrowed portion in the longitudinal direction has a longer length in the lateral direction than the fixing portion arranged in a region overlapping the front narrowed portion in a plan view.

13. The pad-type absorbent article according to claim 1 or 2, characterized in that: The outer edge of the wing portion has: a front convex portion, which is located at a position further forward than the front narrowed portion in the longitudinal direction and is connected to the front narrowed portion, and protrudes in a direction away from the absorbent body; and a rear convex portion, which is located at a position further back in the longitudinal direction than the rear narrowed portion and is connected to the rear narrowed portion, and protrudes in a direction away from the absorbent body, A portion of the outer edge of the wing portion from the rear convex portion to the rear narrowed portion has a larger radius of curvature than a portion of the outer edge of the wing portion from the front convex portion to the front narrowed portion.

14. The pad-type absorbent article according to claim 1 or 2, characterized in that: The absorbent body includes a fiber mass layer mainly composed of fiber masses containing non-water-absorbent fibers in the region facing the excretion part.

15. The pad-type absorbent article according to claim 14, characterized in that: The fiber block layer exists only in a region located between the front narrowing portion and the rear narrowing portion in the longitudinal direction.

16. The pad-type absorbent article according to claim 1 or 2, characterized in that: The fixing portion is arranged in a plurality of strips in a region overlapping the absorbent body in a plan view so as to extend in the lateral direction and be spaced apart in the longitudinal direction. The transverse length of the fixing portion in at least a portion of both the front region and the rear region is shorter than the transverse length of the fixing portion in the region opposite to the excretion portion.

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