Absorbent article

Abstract

The utility model provides a kind of absorbent article. It can reduce the possibility that bonding portion arranged on the non-skin side of absorbent article is bonded to each other while improving the absorption and wearing property when wearing absorbent article. The absorbent article has: liquid-absorbing absorbent body; And multiple bonding portions, which are arranged on the non-skin side of the absorbent article, wherein the absorbent body has a non-woven fabric, the non-woven fabric has multiple fibers containing potential crimped fibers, the absorbent body has multiple first regions and second regions, the first regions are linear regions extending along the length direction, the density of the fibers in the first regions is higher than that in the second regions, and the thickness of the first regions is thinner than that of the second regions, in the width direction, the multiple first regions are arranged separately from each other, the multiple bonding portions are arranged separately from each other, and when observed along the thickness direction, the first regions have overlapping portions overlapping with the bonding portions and non-overlapping portions not overlapping with the bonding portions.

Description

Technical Field

[0001] This utility model relates to absorbent articles. Background Technology

[0002] Previously, absorbent articles such as sanitary napkins for menstrual use were known. For example, Patent Document 1 discloses a sheet material used in absorbent articles, which serves as the absorbent body and surface sheet in the absorbent article. The sheet material described in Patent Document 1 improves the liquid absorption capacity by possessing potentially crimpable fibers.

[0003] In absorbent articles such as sanitary napkins and panty liners, for example, as in the panty liner of Patent Document 2, an adhesive part is provided on the non-skin side for securing the absorbent article to underwear when worn.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2005-15964

[0007] Patent Document 2: Japanese Patent Application Publication No. 2012-75553 Utility Model Content

[0008] Problems to be solved by utility models

[0009] If a sheet material with improved absorbency due to its potentially crimpable fibers is used as the absorbent material for absorbent products such as sanitary napkins and panty liners, there is a problem that the adhesive parts located on the non-skin side of the absorbent product tend to stick together due to the crimpability of the potentially crimpable fibers.

[0010] This invention was made in view of the problems described above, and its purpose is to improve the absorbency and wearability of absorbent articles while reducing the possibility of adhesive parts provided on the non-skin side of absorbent articles sticking to each other.

[0011] Solution for solving the problem

[0012] The main technical solution for achieving the above-mentioned objective is an absorbent article, characterized in that, in its unfolded state, the absorbent article has intersecting length, width, and thickness directions. The absorbent article comprises: a liquid-absorbing body; and a plurality of adhesive portions disposed on the non-skin-facing side of the absorbent article. The absorbent body is made of a nonwoven fabric having a plurality of fibers including potentially crimped fibers. The absorbent body has a plurality of first regions and second regions. The first regions are linear regions extending along the length direction. Compared to the second regions, the first regions have a higher fiber density and a thinner thickness. In the width direction, the plurality of first regions are arranged separately from each other, and the plurality of adhesive portions are arranged separately from each other. When viewed along the thickness direction, the first regions have overlapping portions that overlap with the adhesive portions and non-overlapping portions that do not overlap with the adhesive portions.

[0013] Alternatively, the total area of ​​the overlapping portion may be larger than the total area of ​​the non-overlapping portion.

[0014] Alternatively, the total area of ​​the overlapping portion may be smaller than the total area of ​​the non-overlapping portion.

[0015] Alternatively, the non-overlapping portion may be provided at one end of the absorber along its length.

[0016] Alternatively, the non-overlapping portion may be provided at the center of the absorber in the width direction.

[0017] Alternatively, the first region may be a waveform that alternately has a protrusion protruding to one side in the width direction and a protrusion protruding to the other side in the width direction.

[0018] Alternatively, when viewed along the thickness direction, one of the plurality of first regions has a portion that overlaps with one of the plurality of adhesive portions and a portion that does not overlap with that adhesive portion. The first region is a waveform that alternately has a protrusion protruding to one side in the width direction and a protrusion protruding to the other side in the width direction. The end of the first region on one side in the width direction is located closer to one side in the width direction than the end of one side in the width direction of the adhesive portion.

[0019] Alternatively, the length from one end of the width direction of the first region to one end of the width direction of the adhesive portion may be different from the length from the other end of the width direction of the first region to the other end of the width direction of the adhesive portion.

[0020] Alternatively, the skin-side surface of the absorbent may have a skin-side concave portion and a skin-side convex portion, and the non-skin-side surface of the absorbent may have a non-skin-side concave portion and a non-skin-side convex portion.

[0021] Alternatively, when viewed along the thickness direction, the absorbent article has a portion where the non-skin side protrusion overlaps with the adhesive portion.

[0022] Alternatively, the first region may have a protrusion that protrudes towards the skin side and a recess that is recessed towards the non-skin side on the skin side, wherein the length between the skin side end of the recess and the skin side end of the protrusion in the skin side of the first region is shorter than the length between the skin side end of the protrusion in the skin side of the first region and the skin side end of the second region.

[0023] Alternatively, the absorbent article may have a non-skin side panel disposed at a position closer to the non-skin side than the absorbent body and is the non-skin side surface of the absorbent article. The absorbent body and the non-skin side panel are secured by a plurality of adhesive portions along the length direction. The minimum distance between adjacent adhesive portions in the width direction is smaller than the minimum distance in the width direction between adjacent first regions in the plurality of first regions.

[0024] Other features of this utility model will be made clear from the description in this specification and the accompanying drawings.

[0025] Effects of the utility model

[0026] According to this invention, it is possible to improve the absorbency and wearability of absorbent articles while reducing the possibility of adhesive portions on the non-skin-friendly side of the absorbent article sticking to each other. Attached Figure Description

[0027] Figure 1 This is a plan view of a sanitary napkin 1 viewed from the skin side.

[0028] Figure 2 This is a plan view of a sanitary napkin 1 viewed from the non-skin side.

[0029] Figure 3 yes Figure 1 A rough cross-sectional view of the AA direction in the middle.

[0030] Figure 4 This is a diagram illustrating the structure of sanitary napkin 1.

[0031] Figure 5 This diagram illustrates the absorbent core 3 of the sanitary napkin 1.

[0032] Figure 6AThis is a schematic diagram showing a cross-section of the high-density section DH. Figure 6B This is a schematic diagram showing a cross-section of the low-density section DL.

[0033] Figure 7 yes Figure 5 A magnified view of part X in the image.

[0034] Figure 8 yes Figure 7 A rough cross-sectional view of BB direction in the middle.

[0035] Figure 9 This diagram illustrates the high-density portion DH and the adhesive portion 41.

[0036] Figure 10 yes Figure 9 A magnified view of part Y in the image.

[0037] Figure 11 Yes Figure 10 The diagram illustrates the first high-density portion DHa and the first adhesive portion 41a in the shown section.

[0038] Figure 12 This is a diagram illustrating the high-density portion DH and the adhesive portion 45.

[0039] Figure 13 This is a diagram showing a variation of sanitary napkin 1.

[0040] Explanation of reference numerals in the attached figures

[0041] 1. 100. Sanitary napkin (menstrual pad, absorbent); 1w. Wings; 2. Skin side panel; 3. Absorbent core (non-woven fabric sheet); 31. Front area; 32. Central area; 33. Back area; 3f. Potentially crimped fibers (fibers); 4. Back panel (non-skin side panel); 5. Side panel; 10. Absorbent layer; 20. Compression section; 41. Adhesive section; 41a. First adhesive section (one adhesive section); 42. Adhesive area; 43. Wing adhesive section; 45. Adhesive section; DH. High-density section (first area); DHa. First high-density section (one high-density section); DL. Low-density section (second area); R. Overlapping section; N. Non-overlapping section. Detailed Implementation

[0042] The following matters will be clarified by the description in this specification and the accompanying drawings.

[0043] (Technical Solution 1)

[0044] An absorbent article having intersecting length, width, and thickness directions in an unfolded state, comprising: a liquid-absorbing body; and a plurality of adhesive portions disposed on the non-skin side of the absorbent article. The absorbent body is characterized by having a nonwoven fabric comprising a plurality of fibers including potentially crimped fibers, and a plurality of first and second regions. The first regions are linear regions extending along the length direction, having a higher fiber density and a thinner thickness than the second regions. In the width direction, the plurality of first regions are arranged separately from each other, and the plurality of adhesive portions are arranged separately from each other. When viewed along the thickness direction, each first region has overlapping portions that overlap with the adhesive portions and non-overlapping portions that do not overlap with the adhesive portions.

[0045] According to the absorbent article of technical solution 1, by including an absorbent body having potentially crimped fibers and a first region along its length, the absorbed liquid is easily diffused along the length of the absorbent article. Compared with cellulose fibers such as pulp, it is easier to reduce the possibility of the absorbent body expanding due to liquid absorption, and compared with pulp fibers, it is easier to maintain the gaps between the fibers. It is easier to retain excreted liquid by utilizing the gaps between the potentially crimped fibers, and compared with pulp fibers, the fibers are less likely to be deformed by compression, and it is easier to maintain the volume of the fibers. Therefore, it is possible to improve absorbency and wearability when wearing. In addition, both the first region and the bonding portion are parts with higher stiffness than the surrounding area. Therefore, by having overlapping and non-overlapping portions in the first region, it is easy to become a bending starting point, thus facilitating both the following of the overlapping portion with the clothing and the following of the non-overlapping portion with the wearer's body, thereby improving the fit when wearing. Furthermore, even if the absorbent article is easily deformed due to the crimp of the potentially crimped fibers, the stiffness of the non-overlapping portion can be used to reduce the possibility of the bonding portions sticking together.

[0046] (Technical Solution 2)

[0047] According to the absorbent article of technical solution 1, the total area of ​​the overlapping portion is larger than the total area of ​​the non-overlapping portion.

[0048] According to the absorbent article of technical solution 2, by having potentially crimped fibers and having a first region along the length direction, the diffusion and wearability during wearing are improved. At the same time, compared with the case where the total area of ​​the overlapping part is smaller than the total area of ​​the non-overlapping part, it is easier to improve the following of the garment at the overlapping part.

[0049] (Technical Solution 3)

[0050] According to the absorbent article of technical solution 1, the total area of ​​the overlapping portion is smaller than the total area of ​​the non-overlapping portion.

[0051] According to technical solution 3, the absorbent article, by having a first region along its length, improves diffusion and wearability during wearing. Furthermore, compared to cases where the total area of ​​the overlapping portion is larger than the total area of ​​the non-overlapping portion, it can better accommodate the wearer's body, thus improving the fit and reducing the possibility of the absorbent article becoming excessively stiff. Additionally, compared to cases where the total area of ​​the overlapping portion is larger than the total area of ​​the non-overlapping portion, the stiffness at the non-overlapping portion can reduce the likelihood of the absorbent article easily deforming due to the curling of potentially curled fibers, and the possibility of adhesive portions sticking together.

[0052] (Technical Solution 4)

[0053] An absorbent article according to any one of technical solutions 1 to 3 is characterized in that the non-overlapping portion is provided at one end of one side of the absorbent body in the length direction.

[0054] According to the absorbent article of technical solution 4, even if the absorbent article is easily deformed due to the curling of the potentially curled fibers, the rigidity of the non-overlapping part can be used to reduce the possibility of the adhesive parts sticking to each other, and it is easy to remove the protective sheet from the state where the protective sheet covering the adhesive part is provided.

[0055] (Technical Solution 5)

[0056] An absorbent article according to any one of technical solutions 1 to 4 is characterized in that the non-overlapping portion is provided at the center of the absorbent body in the width direction.

[0057] According to the absorbent article of technical solution 5, even when the absorbent article is easily deformed due to the curling property of potentially curled fibers, the stiffness of the non-overlapping portion can be used to reduce the possibility of the adhesive portions sticking to each other. In addition, compared with the case where the non-overlapping portion is not provided in the central portion in the width direction of the absorbent article, it is easier to reduce the stiffness of the central portion in the width direction of the absorbent article, and it is easier to conform to the wearer's body by utilizing the stiffness of the non-overlapping portion, thus easily reducing discomfort when wearing it.

[0058] (Technical Solution 6)

[0059] An absorbent article according to any one of technical solutions 1 to 5 is characterized in that the first region is a waveform that alternately has a protrusion protruding to one side in the width direction and a protrusion protruding to the other side in the width direction.

[0060] According to the absorbent article of technical solution 6, by setting the first region along the length direction and making it wavy, it is easy to set the second region in the portion adjacent to the first region in the length direction. When worn, it is easy to move the excrement absorbed in the first region, which is easy to introduce liquid by utilizing capillary phenomenon, to the second region adjacent in the length direction, and to move the excrement absorbed in the second region further to the first region on the outside of the length direction. Therefore, it is easy to make the excrement diffuse towards the outside of the absorbent body in the length direction.

[0061] (Technical Solution 7)

[0062] An absorbent article according to any one of technical solutions 1 to 6 is characterized in that, when viewed along the thickness direction, one of the plurality of first regions has a portion overlapping with one of the plurality of adhesive portions and a portion not overlapping with that adhesive portion, the first region being a wave pattern alternately having a protrusion protruding toward one side in the width direction and a protrusion protruding toward the other side in the width direction, and the end of one side of the first region in the width direction being positioned closer to one side in the width direction than the end of one side of the adhesive portion in the width direction.

[0063] According to the absorbent article of technical solution 7, by having potentially curled fibers and a first region along the length direction, the absorbency and wearability during wearing are improved. Simultaneously, it can balance following the clothing and the wearer's body, thus easily improving the fit during wear. Furthermore, even if the absorbent article is prone to deformation due to the curling nature of the potentially curled fibers, the possibility of the adhesive parts sticking together can be reduced. Moreover, since the first region has higher stiffness than the second region, and higher stiffness than the portion with adhesive parts compared to the portion without adhesive parts, when one adhesive part is located on the side closest to the width direction among multiple adhesive parts, by making one first region wavy and positioning one end of the first region on the width direction closer to the width direction than the end of one end of the adhesive part on the width direction, when the wearer brings their thighs together inward during wear, the protrusion of the first region on the width direction easily becomes the part that contacts the wearer's thigh, easily reducing the portion of stiffness felt by the wearer's thigh, thus easily reducing the discomfort and awkwardness caused to the wearer.

[0064] (Technical Solution 8)

[0065] According to the absorbent article of technical solution 7, the length from one end of the width direction of the first region to one end of the width direction of the adhesive portion is different from the length from the other end of the width direction of the first region to the other end of the width direction of the adhesive portion.

[0066] According to the absorbent article of technical solution 8, both ends of a first region and both ends of an adhesive portion are parts with easily variable stiffness. Therefore, even if the absorbent article is easily deformed due to the curling property of the potential curled fibers, the deformation of the absorbent article can be mitigated by utilizing the change in stiffness of a first region and an adhesive portion, thereby reducing the possibility of the adhesive portions sticking to each other.

[0067] (Technical Solution 9)

[0068] An absorbent article according to any one of technical solutions 1 to 8 is characterized in that the skin-side surface of the absorbent has a skin-side concave portion and a skin-side convex portion, and the non-skin-side surface of the absorbent has a non-skin-side concave portion and a non-skin-side convex portion.

[0069] According to the absorbent article of technical solution 9, by having a skin-side concave portion and a skin-side convex portion on the skin side of the absorbent, the absorbency and diffusion of excretory fluid during wear are easily improved. Furthermore, by having a non-skin-side concave portion and a non-skin-side convex portion on the non-skin side of the absorbent, the diffusion and liquid retention of excretory fluid are easily improved, and the diffusion state of excretory fluid within the absorbent is easily visually confirmed.

[0070] (Technical Solution 10)

[0071] According to the absorbent article of technical solution 9, the absorbent article has a portion in which the non-skin side protrusion overlaps with the adhesive portion when viewed along the thickness direction.

[0072] According to the absorbent article of technical solution 10, when the absorbent article is fixed to clothing by means of the adhesive portion, it is easy to apply a force in the thickness direction to the portion where the non-skin side protrusion overlaps with the adhesive portion when viewed along the thickness direction. Therefore, it is easy to fix the clothing and the absorbent article, and the possibility of displacement of the absorbent article can be reduced. In addition, when removing the absorbent article from the clothing, it is also easy to apply a force to the portion where the non-skin side protrusion overlaps with the adhesive portion when viewed along the thickness direction, and the absorbent article can be removed easily.

[0073] (Technical Solution 11)

[0074] An absorbent article according to any one of technical solutions 1 to 10 is characterized in that the first region has a protrusion protruding towards the skin side and a recessed portion concave towards the non-skin side on the skin side side, and the length between the skin side end of the recessed portion and the skin side end of the protrusion in the skin side side side of the first region is shorter than the length between the skin side end of the protrusion in the skin side side side of the first region and the end closest to the skin side in the skin side side side of the second region.

[0075] According to the absorbent article of technical solution 11, by making the length between the skin-side end of the concave portion and the skin-side end of the protrusion in the skin side of the first region shorter than the length between the skin-side end of the protrusion in the skin side of the first region and the skin-side end closest to the skin in the second region, compared with the case where the length between the skin-side end of the concave portion and the skin-side end of the protrusion in the skin side of the first region is greater than the length between the skin-side end of the protrusion in the skin side of the first region and the skin-side end closest to the skin in the second region, it is easier to introduce excretory fluid from the second region to the first region by utilizing the capillary phenomenon in the first region, and it is easier to promote the diffusion of excretory fluid in the first region and its diffusion in the length direction.

[0076] (Technical Solution 12)

[0077] An absorbent article according to any one of technical solutions 1 to 11 is characterized in that the absorbent article has a non-skin side sheet, which is disposed at a position closer to the non-skin side than the absorbent body and is the non-skin side surface of the absorbent article, the absorbent body and the non-skin side sheet are fixed by a plurality of adhesive portions along the length direction, and the minimum distance between adjacent adhesive portions in the width direction is smaller than the minimum distance in the width direction between adjacent first regions in the plurality of first regions.

[0078] According to the absorbent article of technical solution 12, compared with the case where the minimum distance between adjacent adhesive portions in the width direction is greater than the minimum distance between adjacent first regions in the width direction, it is easier to widely provide adhesive portions between the absorbent and the non-skin side sheet, which makes it easier to improve the rigidity of the non-skin side sheet, thereby making it easier to keep the non-skin side sheet as a plane. Therefore, it is possible to reduce the possibility of adhesive portions provided on the non-skin side of the non-skin side sheet sticking to each other.

[0079] ===Implementation Methods===

[0080] As an absorbent article of this utility model, the embodiment will be described using a sanitary napkin 1 (hereinafter also referred to as "sanitary napkin 1") as an example. However, the absorbent article of this utility model can be any absorbent article that has an adhesive portion on the non-skin side, such as a panty liner, absorbent pad, or incontinence pad. In addition, the "absorbent article" of this utility model refers to an absorbent article that can be actually worn when worn. Specifically, an absorbent article refers to an absorbent article that is taken out from a receiving member that holds the absorbent article in a circulating or stored state, and is an absorbent article in a state in which the packaging material of the independent packaging body and the protective sheet (release sheet) for protecting the adhesive portion (adhesive portion 41 described later) on the non-skin side have been removed.

[0081] <<<Structure of Sanitary Napkins for Menstrual Use 1>>>

[0082] Figure 1 This is a plan view of a sanitary napkin 1 (hereinafter also referred to as "sanitary napkin") viewed from the skin side. Figure 2 This is a plan view of a sanitary napkin 1 viewed from the non-skin side. Figure 3 This is a schematic cross-sectional view of sanitary napkin 1 from the AA direction. Figure 4 This diagram illustrates the structure of the sanitary napkin 1. The sanitary napkin 1 has mutually orthogonal longitudinal, width, and thickness directions. In the thickness direction, the side that contacts the wearer's skin is the skin side, and the opposite side is the non-skin side. The skin side in the thickness direction is the side that receives excrement (fluid) when worn. Furthermore, the length direction of the sanitary napkin 1 is along the longitudinal direction of the absorbent body 3 (described later), and the width direction of the sanitary napkin 1 is along the transverse direction of the absorbent body 3. Figure 1 The center line CC shown indicates the center (central position) in the width direction of sanitary napkin 1.

[0083] Sanitary napkins 1 have a skin-friendly side panel 2, an absorbent core (non-woven fabric panel) 3, a back panel 4, and side panels 5. For example Figure 4 As shown, the sanitary napkin 1 is constructed by overlapping the side sheet 5, the skin-side sheet 2, the absorbent body 3, and the back sheet 4 in the thickness direction, starting from the skin side. The overlapping components in the thickness direction are appropriately fixed to each other using adhesives such as hot melt adhesives.

[0084] The skin-permeable sheet 2 is a liquid-permeable sheet member located at the center of the sanitary napkin 1 in the width direction, closest to the skin. It is a member that, when worn, abuts against the discharge opening to receive excrement discharged from the opening. The skin-permeable sheet 2 is approximately elliptical in shape and elongated in the length direction. Examples of skin-permeable sheets 2 include nonwoven fabrics (e.g., hot-air nonwoven fabric, spunbond nonwoven fabric, etc.) made of synthetic fibers such as polyethylene (PE) and polypropylene (PP), synthetic resin films with through-pores, and soft sheets such as cotton nonwoven fabric sheets. Alternatively, the skin-permeable sheet 2 can also be a nonwoven fabric sheet with potentially crimped fibers, similar to the absorbent 3. In this embodiment, the skin-permeable sheet 2 is composed of a liquid-permeable sheet containing polyethylene terephthalate (PET) and polyethylene (PE), or water-retaining fibers such as cotton and rayon, such as hot-air nonwoven fabric or spunlace nonwoven fabric.

[0085] The absorbent body 3 is a non-woven fabric sheet disposed between the skin-side sheet 2 and the back sheet 4 in the thickness direction. In a plan view, the absorbent body 3 is slightly smaller than the skin-side sheet 2. The absorbent body 3 is a roughly rectangular shape with a longer length L3 than its width W3. The absorbent body 3 is an absorbent component of a predetermined thickness that is permeable to liquid, has liquid absorption function, and has liquid retention function. The absorbent body 3 is an absorbent component that absorbs (diffused) excrement transferred from the skin-side sheet 2 and retains the excrement.

[0086] Absorber 3 is composed of potentially coiled fibers 3f (see reference). Figure 6A , Figure 6B The absorbent 3 in this embodiment is a nonwoven fabric (nonwoven sheet) composed solely of potentially crimped fibers (100% potentially crimped fibers). The potentially crimped fibers in the absorbent 3 can be either hydrophilic or hydrophobic fibers. Alternatively, fibers obtained by hydrophilic processing of hydrophobic fibers can be used. Furthermore, the layers (nonwoven fabric) constituting the absorbent 3 may also use fibers composed of polyolefins such as polyethylene (PE) and polypropylene (PP), polyesters (PET, PBT), polyamides, and their composite fibers, as well as other hydrophilic fibers such as rayon, pulp, and cotton, in addition to the potentially crimped fibers. Hereinafter, the potentially crimped fibers 3f will also be simply referred to as "fiber 3f".

[0087] "Nonwoven fabric" refers to a sheet, web, or layer of fibers, which is an article formed by bonding fibers together in one direction or randomly oriented by interlacing and / or welding and / or bonding (JIS L0222:2001 Nonwoven Fabric Terminology 101). In other words, nonwoven fabric is a cloth obtained by integrating fibers without weaving them, and is a sheet with a breaking strength of 3 [N] / 25 mm or higher. Breaking strength can be measured using known methods, such as the following methods.

[0088] First, the absorbent body 3 is removed from the sanitary napkin 1. Specifically, the components constituting the sanitary napkin 1 (in this embodiment, the skin side sheet 2, the absorbent body 3, the back sheet 4, and the side sheet 5) are separated using a cold spray device or a dryer, and the absorbent body 3 is removed. Then, only the portion of the absorbent body 3 corresponding to the nonwoven fabric sheet is removed.

[0089] Next, the separation strength of the extracted nonwoven fabric sheet was measured. The separation strength of the nonwoven fabric sheet was measured using a tensile testing machine (manufactured by Shimadzu Corporation: AUTOGRAPH, AGS-1kNG) equipped with a load cell with a maximum load capacity of 50N. When measuring the separation strength of the nonwoven fabric sheet, one chuck held the top edge of one side in the length or width direction of the nonwoven fabric sheet, and another chuck held the other side. Using the tensile testing machine, the two chucks were stretched at a constant speed (e.g., 100 mm / min) with the spacing between them widening, while simultaneously measuring the load acting on the two chucks. The load at which the nonwoven fabric sheet broke was defined as the breaking strength.

[0090] Examples of nonwoven fabrics include meltblown nonwoven fabrics, electrospun nonwoven fabrics, spunbond nonwoven fabrics, hot-air nonwoven fabrics, spunlace nonwoven fabrics, needle-punched nonwoven fabrics, laminates of two or more of these nonwoven fabrics, or laminates of these nonwoven fabrics with other nonwoven fabrics or other materials. In this embodiment, the absorbent 3 is a spunlace nonwoven fabric formed by interweaving fibers with water flow without using an adhesive.

[0091] As multiple resins with different heat shrinkage rates or heat expansion rates for forming the potential crimped fiber 3f, any combination of resins with different heat shrinkage rates or heat expansion rates can be used without particular limitation. This can include combinations of homologous or single resins, or combinations of resins from different systems. Specific examples of combinations of resins with different heat shrinkage rates or heat expansion rates for forming the potential crimped fiber include combinations of polyester resins and combinations of polyamide resins.

[0092] The nonwoven fabric of the absorbent 3 in this embodiment is a combination of polyester resins (single-component resins), specifically, a potentially crimpable fiber using a combination of polyethylene terephthalate (PET) and modified PET (modified polyethylene terephthalate). The modified PET is PET modified by copolymerizing a diol component other than ethylene glycol or a dicarboxylic acid component other than terephthalic acid as a small amount with ethylene glycol and terephthalic acid, which are constituents of PET. Specific examples of diol components other than ethylene glycol include 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, cyclohexanediol, diethylene glycol, triethylene glycol, polyethylene glycol, polytetramethylene glycol, etc. In addition, specific examples of dicarboxylic acid components other than terephthalic acid include isophthalic acid, phthalic acid, naphthalenedicarboxylic acid, cyclohexanedicarboxylic acid, adipic acid, and sebacic acid. Furthermore, a fiber web composed of potentially crimped fibers of a combination of PET and modified PET is formed using a fiber web forming unit such as a carding machine. This fiber web is then interwoven with the fibers using a hydroentangling process to form a nonwoven fabric. It is then heated to a predetermined temperature to allow the crimped fibers to become visible, thereby producing the nonwoven fabric of absorbent 3. Through this fiber crimping, the area weight per unit area of ​​the potentially crimped fibers in the heated nonwoven fabric is greater than that of the potentially crimped fibers in the nonwoven fabric state before heating. In other words, through the crimping of the potentially crimped fibers, the nonwoven fabric shrinks, increasing the area weight per unit area of ​​the fibers.

[0093] The latent crimped fibers 3f in the absorber 3 are latent crimped fibers of a combination of PET and modified PET, using fibers of the same thickness throughout the entire thickness direction. In this embodiment, the latent crimped fibers 3f in the absorber 3 have a thickness of 2.2 dtex.

[0094] Potentially crimped fiber 3f is a fiber that is curled into a spiral shape by heat treatment. Potentially crimped fiber refers to a fiber that appears coil-like (like a circle or ellipse, rotating 360 degrees) when viewed (in cross-section) along its thickness direction. For example, for potentially crimped fiber 3f, parallel composite fibers with high-shrinkage and low-shrinkage components arranged side-by-side, or eccentric core-sheath composite fibers with the high-shrinkage component as the core and the low-shrinkage component as the sheath, where the centers of gravity of the two components do not overlap at a single point, can be used. When the crimp of the potentially crimped fiber is revealed, the potentially crimped fiber curls into a coil-like shape.

[0095] The absorber 3 has a high-density portion (first region) DH and a low-density portion (second region) DL. Figure 5 This diagram illustrates the absorbent core 3 of the sanitary napkin 1. Figure 6A This is a schematic diagram showing a cross-section of skin side panel 2. Figure 6B This is a schematic diagram showing the cross-section of absorber 3. Figure 6A and Figure 6B The dimensions and other information provided may not be accurate. For example... Figure 6A and Figure 6B As shown, the absorber 3 has voids formed by multiple fibers (potentially crimped fibers) 3f. Furthermore, the voids in the absorber 3 can be voids between discontinuous fibers (multiple fibers), voids formed by bending or spiraling a continuous fiber, or voids formed by a combination of these voids. Voids formed by multiple fibers 3f refer to spaces or regions in the absorber 3 where multiple fibers 3f are not present. Moreover, voids are not only spaces enclosed by fibers 3f or spaces closed by fibers, but can also be spaces at least partially open within voids formed by fibers 3f.

[0096] Because the absorbent 3 contains potentially crimped fibers 3f, the fibers 3f are coiled and intertwined to form a spiral shape by passing through the fibers 3f. For example, the distance between the fibers 3f is shortened due to the coiling, or other fibers enter between the shortened fibers 3f, further reducing the gaps between them. Therefore, the gaps formed by the fibers 3f containing potentially crimped fibers are smaller than the gaps formed by multiple fibers in a typical nonwoven fabric made of uncurled fibers.

[0097] Furthermore, the potential crimped fibers 3f provided in the absorbent body 3 do not readily absorb liquid. For example, in the case of fibers such as pulp fibers, the fiber thickness increases due to the absorption of liquid (excrement), but the potential crimped fibers 3f of the absorbent body 3 do not readily absorb liquid into their inner surface even when in contact with liquid. Therefore, in the absorbent body 3, even when the sanitary napkin 1 absorbs excrement while worn, the thickness of the potential crimped fibers 3f of the absorbent body 3 does not readily increase. By preventing the fiber thickness from increasing, the size of the gaps formed by the fibers 3f does not readily decrease, and the gaps are not easily filled. Therefore, in the absorbent body 3, liquid (excrement) can be retained in the gaps formed by the fibers 3f, thus the absorbent body 3 becomes a layer capable of absorbing and retaining liquid. In addition, since the absorbent body 3 is a non-woven fabric sheet formed of fibers 3f and has gaps formed by the fibers 3f, its breathability is also excellent, reducing stuffiness and skin roughness caused to the wearer while wearing, thereby improving comfort while wearing.

[0098] The back sheet 4 is a liquid-impermeable sheet (non-skin side sheet) positioned on the non-skin side of the absorbent 3. Examples of liquid-impermeable sheets include polyethylene (PE) resin films. The side sheet 5 extends outward from both sides of the skin side sheet 2 in the width direction. Examples of side sheets 5 include hydrophobic hot-air nonwoven fabrics and hydrophobic spunbond nonwoven fabrics.

[0099] Additionally, the sanitary napkin 1 has a pair of wings 1w extending outward in the width direction, approximately at its central portion along its length. The wings 1w are formed by side panels 5 and a back panel 4. However, the sanitary napkin 1 may or may not have the wings 1w. In the case where the sanitary napkin 1 does not have the wings 1w, it may or may not have the side panels 5.

[0100] In addition, the sanitary napkin 1 has a compression portion 20 that causes the skin side sheet 2 and the absorbent body 3 to be recessed in their thickness direction. The compression portion 20 can fix the position of the skin side sheet 2 and the absorbent body 3 and improve the liquid spreadability of the sanitary napkin 1.

[0101] At the compression section 20, the thickness of the sanitary napkin 1 is thinner than the surrounding area, and the fiber density of the sanitary napkin 1 (skin side panel 2 and absorbent body 3) is higher than the surrounding area. These comparisons can be made using known methods. Examples of methods for comparing the thickness of the sanitary napkin 1 include visual inspection, using a scale-type thickness gauge ID-C1012C manufactured by Mitutoyo Co., Ltd., or an equivalent device to obtain a thickness of, for example, 3.0 gf / cm². 2 A method for comparing values ​​measured by applying pressure to the target area. As an example of comparing the density of the sanitary napkin 1, a method based on comparing magnified images of cross-sections obtained by cutting the sanitary napkin 1 along its thickness direction using an electron microscope or similar instrument is provided. Furthermore, the shape of the compression section 20 is not limited to... Figure 1 The shape shown. For example, it could also be a discrete arrangement of multiple point-like compression sections.

[0102] Multiple adhesive portions 41 are provided on the non-skin side of the sanitary napkin 1. Each adhesive portion 41 is an area coated with an adhesive such as a hot melt adhesive. When wearing the sanitary napkin 1, by attaching the adhesive portions 41 to the inside of the crotch area of ​​the underwear (clothes), the position of the sanitary napkin 1 can be prevented from shifting relative to the wearer's body.

[0103] In the sanitary napkin 1 of this embodiment, as follows: Figure 2As shown, multiple adhesive portions 41 are provided on the non-skin side of the back sheet 4. Specifically, an adhesive area 42 composed of multiple adhesive portions 41 is provided on both sides of the center line (center) CC in the width direction. When the sanitary napkin 1 is viewed along the thickness direction, the adhesive portions 41 and the adhesive area 42 are positioned to overlap with the absorbent body 3. The absorbent body 3 is a component with high rigidity in the sanitary napkin 1. Therefore, by positioning the adhesive portions 41 and the adhesive area 42 to overlap with the absorbent body 3 when viewed along the thickness direction, it is easier to apply force to the adhesive portions 41 (adhesive area 42) when putting on and taking off the sanitary napkin 1. Each adhesive area 42 is provided with six strip-shaped (rectangular) adhesive portions 41 along the length direction. The adhesive areas 42 on both sides in the width direction are arranged separately from each other in the width direction, and the multiple adhesive portions 41 within the adhesive area 42 are arranged separately from each other in the width direction. The distance d41 between adjacent adhesive portions 41 in the width direction within the adhesive area 42 is shorter than the distance d42 between adjacent adhesive areas 42 in the width direction (d41). <d42)。

[0104] Furthermore, a wing adhesive portion 43 is provided on the non-skin side of the wing portion 1w, that is, on the non-skin side of the back panel 4 corresponding to the position of the wing portion 1w. In this embodiment, the wing adhesive portion 43 of the sanitary napkin 1 is rectangular in shape and is an area coated with hot-melt adhesive. When wearing the sanitary napkin 1, the sanitary napkin 1 can be secured to the underwear by folding the wing portion 1w to the non-skin side of the underwear and attaching the wing adhesive portion 43 to the non-skin side of the crotch area of ​​the underwear.

[0105] <<<About Absorber 3>>>

[0106] The absorbent body 3 is a non-woven fabric sheet used in the sanitary napkin 1 (absorbent article). The absorbent body 3 is a sheet-like non-woven fabric sheet formed by integrating fibers without weaving them. In this embodiment, multiple fibers 3f are interwoven in a predetermined manner to form a sheet.

[0107] The absorbent core (absorbent material) of typical absorbent articles is formed from absorbent fibers such as pulp fibers, SAP, polymer foam structures, etc. For example, an absorbent core (absorbent material) formed from absorbent fibers such as pulp fibers is a simple laminate of absorbent fibers, without interlacing of the fibers. Therefore, the gaps formed by multiple fibers have the following characteristics: it is difficult to maintain the shape of the gaps; if liquid is absorbed, not only will the absorbent fibers themselves become thicker, but the shape of the gaps will also easily deform, making it difficult to absorb liquid in the gaps. In addition, since the absorbent fibers themselves absorb liquid, the gaps are easily filled. Furthermore, the breaking strength of the absorbent core formed from absorbent fibers such as pulp fibers is less than 3 [N] / 25 mm, so it is more prone to deformation and breakage than non-woven fabric sheets (absorbent material 3). Thus, if the absorbent material formed from absorbent fibers absorbs liquid, the shape of the fibers is easily deformed, so the absorbent material is prone to twisting, and its strength is also prone to decrease.

[0108] The absorbent body 3 of this invention, formed from a nonwoven fabric sheet, is a nonwoven fabric containing multiple fibers with potentially crimped fibers whose shape is maintained by interlacing. Therefore, it is easy to maintain the shape of the gaps formed by the multiple fibers. When this absorbent body 3, formed from a nonwoven fabric sheet containing potentially crimped fibers 3f, is used as the absorbent body of a sanitary napkin 1, it is easier to maintain the gaps between the fibers compared to cellulose fibers such as pulp, thus making it easier to retain liquid in these gaps. Furthermore, the fibers 3f themselves are not easily deformed by pressure, and the interlacing process easily maintains the shape of the gaps, thus easily maintaining the volume of the fibers 3f. Moreover, even when liquid is absorbed, compared to cellulose fibers such as pulp, it is easier to reduce the possibility of the fibers 3f themselves swelling due to liquid absorption and the possibility of the gaps formed by the fibers 3f being squeezed, thus easily maintaining the gaps formed by the fibers 3f. In addition, by reducing the swelling of the fibers 3f, the possibility of the absorbent body 3 swelling can be reduced. Even when the sanitary napkin 1 is worn for a long time or has been used to absorb excrement multiple times, the deformation of the sanitary napkin 1 (absorbent body 3) can be reduced, the distortion of the shape of the absorbent body 3 can be reduced, and the shape of the absorbent body 3 can be easily maintained. This improves the absorbency and wearability of the sanitary napkin 1 when wearing it. Furthermore, since the sanitary napkin 1 (absorbent 3) has pores formed by fibers 3f, its breathability is superior to that of typical absorbent materials.

[0109] In addition, preferably, the plurality of fibers 3f of the absorber 3 are composite fibers formed by conjugating polyethylene terephthalate (PET) and modified PET (modified polyethylene terephthalate) in a side-by-side manner. By making the plurality of fibers 3f such potential crimped fibers, it is easier to more effectively cause the potential crimped fibers to be helically crimped, and it is easier to narrow the gaps between the fibers 3f. By narrowing the intervals between the fibers 3f, it is easier to introduce the excreted liquid absorbed by the sanitary napkin 1 into the absorber 3 by capillary action, and it is easier to make the excreted liquid diffuse within the absorber 3.

[0110] On the other hand, since the absorber 3 has potential crimped fibers 3f, compared with an absorber formed of ordinary pulp fibers or the like, it is easier to contract the fibers 3f by using the crimpability of the fibers, and it is easier to make the fibers 3f round, so it is easier to deform the absorber 3 and the sanitary napkin 1. For example, when the sanitary napkin 1 is deformed in a manner of being bent at a fold line along the length direction, the bonding portions 41 provided on the non-skin side of the sanitary napkin 1 will stick together, and the sanitary napkin 1 cannot be worn at the correct position on underwear or the like, or the sanitary napkin 1 will be fixed to the underwear in a deformed state. In this way, the sanitary napkin 1 may cause discomfort to the wearer, or excrement may leak from the sanitary napkin 1.

[0111] In response to this, the absorber 3 has a plurality of high-density portions (first regions) DH and low-density portions (second regions) DL. The high-density portion DH is a region extending in the length direction. Regarding the high-density portion DH and the low-density portion DL, as described above, the non-skin side layer 3 has a plurality of fibers 3f, and the density of the fibers 3f in the high-density portion DH is higher than that in the surrounding (low-density portion DL). As Figure 8 shown, the length (thickness) Hdh in the thickness direction of the high-density portion DH is shorter than the length H3 in the thickness direction of the low-density portion DL (Hdh < H3). That is, the thickness of the high-density portion DH is thinner than the thickness of the low-density portion DL. Figure 7 is Figure 5 an enlarged view of a part X in Figure 8 is Figure 7 a schematic cross-sectional view taken along the B-B direction in Figure 5 、 Figure 7 etc. shown, the high-density portion DH is a linear region extending in the length direction.

[0112] And, as Figure 7 、 Figure 9 etc. shown, in the width direction of the sanitary napkin 1, the plurality of high-density portions DH are arranged separately from each other. That is, the plurality of high-density portions DH are arranged at a predetermined interval in the width direction, and a low-density portion DL is provided between the high-density portions DH adjacent to each other in the width direction. In addition, as Figure 2 、 Figure 9As shown, in the width direction of the sanitary napkin 1, a plurality of adhesive portions 41 are arranged separately from each other. Specifically, as described above, the plurality of adhesive portions are arranged in the width direction with a gap of d41, d42.

[0113] Figure 9 This diagram illustrates the high-density portion DH and the adhesive portion 41. Figure 10 yes Figure 9 A magnified view of part Y in the image. Figure 9 This is a diagram showing the sanitary napkin 1 viewed from the non-skin side. For clarity, the high-density sections DH are represented by solid lines. Regarding the multiple high-density sections DH and multiple adhesive sections 41, as follows... Figure 9 and Figure 10 As shown, the high-density portion DH has an overlapping portion R that overlaps with the adhesive portion 41 and a non-overlapping portion N that does not overlap with the adhesive portion 41. In the sanitary napkin 1, compared with the low-density portion DL, the fiber density of the fibers 3f in the high-density portion DH is higher, therefore the high-density portion DH is a portion with higher stiffness than the surrounding portion (low-density portion DL). Furthermore, the portion where the adhesive portion 41 is provided is a portion with higher stiffness than the surrounding portion (the portion without the adhesive portion 41). For ease of explanation, in... Figure 10 In the diagram, the overlapping portion R in the high-density portion DH is indicated by blacking out.

[0114] The "linear" high-density section (DH) is not limited to sections where the density is higher than the surrounding area and they are continuously arranged in a linear pattern. When multiple high-density sections are intermittently arranged in a linear or dotted pattern, the area between adjacent high-density sections is defined as a linear high-density section (DH). This area, where adjacent high-density sections are close to each other, is a region where the fiber density is lower than the section formed by the high-density section itself, but higher than the surrounding area; therefore, it is collectively defined as a linear high-density section.

[0115] The thickness comparison of the high-density portion DH and the low-density portion DL of the absorber 3 can be performed using known methods. For example, the above-described method of comparison by visual inspection can be used, the measurement method using a scale-type thickness gauge ID-C1012C manufactured by Mitutoyo Corporation or an equivalent device can be used, or the thickness of each part of the absorber 3 can be measured by taking magnified photographs of the cross-section of an article of known size and the absorber 3 using a microscope (manufactured by Keyence Corporation, VHX-1000).

[0116] The high-density section DH can be formed, for example, during the manufacturing process of the absorber 3 by transporting a nonwoven fabric sheet (the absorber 3 in its state before the high-density section DH is formed) with approximately uniform thickness in the thickness direction between a pair of rollers. One of the rollers is a hot embossing roller (or acoustic embossing roller) with protrusions on its outer peripheral surface, and the other roller is an anvil roller with a smooth outer peripheral surface. By making the heating temperature of the hot embossing roller (or acoustic embossing roller) on the fiber 3f higher than the softening point of the potentially crimped fiber of the absorber 3, the fiber 3f is easily softened and processed, and it is easy to maintain the shape where the thickness of the high-density section DH is thinner than that of the low-density section DL.

[0117] Even if the absorbent 3 has potentially curled fibers 3f and the sanitary napkin 1 is easily deformed due to the curlability of the potentially curled fibers 3f, by arranging the multiple adhesive portions 41 separately in the width direction, the possibility of the adhesive portions 41 sticking to each other can be reduced compared to the case where the adhesive portions 41 are not separated from each other. Furthermore, as... Figure 10 As shown, when viewed along the thickness direction, the high-density portion DH not only has an overlapping portion R that overlaps with the adhesive portion 41, but also a non-overlapping portion N that does not overlap with the adhesive portion 41. This makes it easy to use the rigidity of the high-density portion DH to keep the absorbent body 3 (sanitary napkin 1) in a planar shape in the non-overlapping portion N, thereby reducing the possibility of deformation of the sanitary napkin 1 and reducing the possibility of the adhesive portions 41 sticking to each other.

[0118] Furthermore, the boundary between the high-density portion DH and the low-density portion DL, and the end of the adhesive portion 41 (the boundary between the portion where the adhesive portion 41 is provided and the portion where the adhesive portion 41 is not provided) are both areas where stiffness changes, thus easily becoming the starting point for bending. Therefore, by having an overlapping portion R that overlaps with the adhesive portion 41 and a non-overlapping portion N that does not overlap with the adhesive portion 41 when viewed along the thickness direction, the overlapping portion R of the high-density portion DH and the adhesive portion 41 when viewed along the thickness direction is the part where the adhesive portion 41 is fixed to the underwear, and it is easy to become the starting point for bending due to the difference in stiffness, thus becoming a part that easily follows the shape and movement of underwear and other clothing. On the other hand, the non-overlapping portion N of the high-density portion DH that does not overlap with the adhesive portion 41 when viewed along the thickness direction is the part that is not fixed to the wearer's clothing, and it is easy to become the starting point for bending due to the difference in stiffness, thus becoming a part that easily follows the shape and movement of the wearer's body. Therefore, by having an overlapping portion R that overlaps with the adhesive portion 41 and a non-overlapping portion N that does not overlap with the adhesive portion 41, it is easy to balance the following of the garment at the overlapping portion R where the high-density portion DH overlaps with the adhesive portion 41 and the following of the wearer's body at the non-overlapping portion N where the high-density portion DH does not overlap with the adhesive portion 41, thus easily improving the fit when wearing.

[0119] Furthermore, in the absorber 3, by coiling the potentially coiled fibers 3f in a spiral (coil-like) shape, the spacing between the fibers 3f is easily narrowed. Compared to the low-density portion DL, the high-density portion DH of the absorber 3 has a higher fiber density, and the gaps between the fibers 3f are narrower (see reference). Figure 6A , Figure 6B Therefore, after absorbing liquid (excrement), the absorbent 3 can easily promote the introduction of liquid into the high-density part DH by utilizing the capillary phenomenon at the high-density part DH while maintaining the gaps between the fibers 3f. As a result, the absorbency of the absorbent 3 can be easily improved and the absorbed liquid can diffuse within the absorbent 3.

[0120] Generally, based on the shape of the human body, for the absorbent body 3 of absorbent articles such as sanitary napkins 1, since the length of the sanitary napkin 1 and the absorbent body 3 is longer in the longitudinal direction than in the width direction, it is preferable to promote diffusion in the longitudinal direction. In this regard, by making the absorbent body 3 have a high-density linear portion DH along the longitudinal direction, it is easier for excrement to diffuse in the longitudinal direction when worn, and the possibility of excrement leaking from the outer side of the sanitary napkin 1 in the width direction is easily reduced.

[0121] In this way, the sanitary napkin 1 can easily improve the spreadability in the length direction while taking into account the following of clothing at the overlapping part R where the high-density part DH overlaps with the adhesive part 41 and the following of the wearer's body at the non-overlapping part N where the high-density part DH does not overlap with the adhesive part 41. It also reduces the possibility of the adhesive parts 41 on the non-skin side of the sanitary napkin 1 sticking to each other, thereby reducing discomfort and leakage of excrement when wearing it.

[0122] In the absorber 3, it is preferable that the multiple fibers 3f are not fused together. As described above, during the manufacturing process of the absorber 3, a high-density section DH can be formed by sandwiching a nonwoven fabric sheet between a pair of rollers. However, since heat and pressure are applied to the high-density section DH, the multiple fibers 3f of the high-density section DH may fuse together. Therefore, by heating the fibers 3f at a temperature higher than the softening point and lower than the melting point of the potentially crimped fibers of the absorber 3 by the hot embossing roller (or sonic embossing roller) of one of the rollers in the pair, the high-density section DH is formed, thereby reducing the possibility of the multiple fibers 3f fusing together while easily maintaining the shape of the high-density section DH.

[0123] Typically, in nonwoven fabrics, the fused fiber portions are formed by the melting and solidification of fibers 3f together, which can easily hinder the diffusion of excrement (liquid). On the other hand, the narrower the gaps between fibers, the easier it is for excrement (liquid) to diffuse. Therefore, by ensuring that the fibers 3f are not fused together at the high-density portion DH, the likelihood of impeded diffusion of absorbed liquid (excrement) can be reduced compared to the case where the fibers are fused together.

[0124] Preferably, when viewing the sanitary napkin 1 along its thickness direction, the total area of ​​the overlapping portion R, where the high-density portion DH overlaps with the adhesive portion 41, and the total area of ​​the non-overlapping portion N, where the high-density portion DH does not overlap with the adhesive portion 41, is larger than the total area of ​​the non-overlapping portion N. By including an absorbent body 3 with potentially curled fibers 3f and a high-density portion DH along its length direction, and including the overlapping portion R and the non-overlapping portion N, the wearability is improved by enhancing the diffusion of excrement during wear and reducing the possibility of adhesion between the adhesive portions 41. Furthermore, by making the total area of ​​the overlapping portion R larger than the total area of ​​the non-overlapping portion N, the following fit of clothing at the overlapping portion R is more easily improved compared to the case where the total area of ​​the overlapping portion R is smaller than the total area of ​​the non-overlapping portion N.

[0125] Furthermore, when viewed along the thickness direction, the total area of ​​the overlapping portion R (where the high-density portion DH overlaps with the adhesive portion 41) and the non-overlapping portion N (where the high-density portion DH does not overlap with the adhesive portion 41) is smaller than the total area of ​​the non-overlapping portion N. Even in this case, by including the absorbent body 3 with potentially curlable fibers 3f and a high-density portion DH along the length direction, and including the overlapping portion R and the non-overlapping portion N, the wearability is improved by increasing the diffusion of excrement during wear and reducing the possibility of adhesion between the adhesive portions 41. In addition, by making the total area of ​​the overlapping portion R smaller than the total area of ​​the non-overlapping portion N, the fit to the wearer's body is improved compared to the case where the total area of ​​the overlapping portion R is larger than the total area of ​​the non-overlapping portion N. Furthermore, compared to the case where the total area of ​​the overlapping portion R is larger than the total area of ​​the non-overlapping portion N, the area of ​​the more rigid portion can be reduced, thus reducing the possibility of the sanitary napkin 1 becoming excessively stiff. Furthermore, compared to the case where the total area of ​​the overlapping portion R is larger than the total area of ​​the non-overlapping portion N, it is easier to set up areas where no adhesive portion 41 is provided, and even in cases where the sanitary napkin 1 is easily deformed due to the curling nature of the potentially curled fibers 3f, the rigidity of the high-density portion DH at the non-overlapping portion N can be used to reduce the possibility of the adhesive portions 41 sticking to each other.

[0126] As a comparison between the total area of ​​the overlapping portion R and the total area of ​​the non-overlapping portion N, examples can be given of methods such as visual inspection and methods that use an area calculation program to calculate the area of ​​the overlapping portion R and the area of ​​the non-overlapping portion N. The unit area can be set to, for example, a 50mm × 50mm region, but can be set arbitrarily.

[0127] More preferably, when the length of the absorbent body 3 is divided into three equal parts, and the front portion of the three parts is designated as the front region 31, the central portion as the central region 32, and the rear portion as the rear region 33, the high-density portion DH has at least a portion that extends from the upper end of the central region 32 to the lower end of the central region 32. The central region 32 is the area that easily comes into contact with the excretion opening when worn. By having the high-density portion DH of the absorbent body 3 extend from the upper end of the central region 32 to the lower end of the central region 32, the excreted waste is more easily diffused in the length direction, at least in the central region 32.

[0128] In this embodiment, multiple high-density portions DH are continuously disposed from the front end of the absorber 3 to the rear end of the absorber 3. Furthermore, the shape, size, and thickness (width) of the high-density portions DH and the adhesive portion 41 in the plan view can be appropriately changed. Additionally, the depth of the high-density portions DH (the degree of indentation, the length in the thickness direction from the skin side of the low-density portion DL to the skin side of the high-density portion DH) can also be appropriately changed.

[0129] Furthermore, it is preferable that a non-overlapping portion N is provided at one end of the absorber 3 along its length. For example... Figure 9As shown, in this embodiment, the length of the adhesive portion 41 in the longitudinal direction of the sanitary napkin 1 is shorter than the length of the absorbent body 3 in the longitudinal direction. The front end of the adhesive portion 41 is separated from the front end of the absorbent body 3 by a predetermined distance, and the rear end of the adhesive portion 41 is separated from the rear end of the absorbent body by a predetermined distance. On the other hand, a plurality of high-density portions DH are continuously provided from the front end of the absorbent body 3 to the rear end of the absorbent body 3. Therefore, on the front side of the sanitary napkin 1, a non-overlapping portion N of the high-density portions DH that does not overlap with the adhesive portion 41 is provided at the front end of the absorbent body 3. Similarly, on the rear side of the sanitary napkin 1, a non-overlapping portion N of the high-density portions DH that does not overlap with the adhesive portion 41 is provided at the rear end of the absorbent body 3. Because the sanitary napkin 1 is like this, it is possible to improve the diffusion and wearability of excrement while reducing the possibility of the adhesive portions 41 sticking to each other by utilizing the stiffness of the non-overlapping portion N. Furthermore, since at least a portion of the adhesive portion 41 can be provided at a position overlapping the absorbent body 3 with higher rigidity when viewed along the thickness direction, when the wearer takes the sanitary napkin 1 out of the package in its circulation and storage state, peels off the protective sheet (not shown) attached to the non-skin side of the sanitary napkin 1, and puts on the sanitary napkin 1, it is easy to apply force to the protective sheet and the portion where the adhesive portion 41 is attached to the protective sheet, making it easy to remove the protective sheet attached to the non-skin side of the sanitary napkin 1. Similarly, when the wearer removes the sanitary napkin 1 from their underwear after using it, it is also easy to apply force to the portion where the adhesive portion 41 is fixed to the underwear, making it easy to remove the sanitary napkin 1 from the underwear.

[0130] Furthermore, in this embodiment, the sanitary napkin 1 has non-overlapping portions N on both sides of the absorbent body 3 along its length, but is not limited to this. The sanitary napkin 1 may also have a structure where one end of the absorbent body 3 along its length has an overlapping portion R, and the other end of the absorbent body 3 along its length has a non-overlapping portion N.

[0131] In addition, such as Figure 9As shown, preferably, a non-overlapping portion N is provided in the central portion of the absorbent body 3 in the width direction. In the sanitary napkin 1 of this embodiment, the central portion of the absorbent body 3 (sanitary napkin 1) in the width direction is provided with a high-density portion DH instead of an adhesive portion 41 in the entire length direction. Therefore, instead of an overlapping portion R where the high-density portion DH overlaps with the adhesive portion 41 in the central portion of the absorbent body 3 in the width direction, a non-overlapping portion N where the high-density portion DH does not overlap with the adhesive portion 41 is provided continuously in the entire length direction of the absorbent body 3. Thus, even if the sanitary napkin 1 has potentially curled fibers 3f, causing the sanitary napkin 1 to be easily deformed due to the curling nature of these fibers, it is easy to maintain the central portion in the width direction as planar by utilizing the stiffness of the high-density portion DH at the non-overlapping portion N, thereby reducing the possibility of the adhesive portions 41 sticking to each other. Furthermore, compared to the case where the central portion of the sanitary napkin 1 (absorbent 3) in the width direction has an overlapping portion R and thus does not have a non-overlapping portion N in the width direction, it is easier to reduce the stiffness of the central portion in the width direction of the sanitary napkin 1, and it is easier to fit the wearer's body by utilizing the stiffness of the high-density portion DH at the non-overlapping portion N, thus easily reducing discomfort when wearing it.

[0132] In addition, preferably, such as Figure 7 , Figure 10 As shown, one of the multiple high-density portions DH is alternately provided with one side facing the width direction (e.g., Figure 10 The protruding convex part on the right side and the other side facing the width direction (e.g.) Figure 10 The waveform of the protruding convex portion (on the left side) in the absorber 3. That is, preferably, in the absorber 3, the low-density portion DL is adjacent to the high-density portion DH on both sides along the length direction of the high-density portion DH. For example, as... Figure 7 As shown, multiple high-density portions DH are intermittently arranged along the imaginary straight line L of the absorber 3 in the length direction. The imaginary straight line L is an imaginary straight line parallel to the length direction. Furthermore, low-density portions DL are respectively arranged adjacent to each other on the front and rear sides of a high-density portion DH in the length direction.

[0133] For the high-density section DH of absorber 3, due to the higher density of fiber 3f, the voids formed by fiber 3f are smaller. Therefore, the high-density section DH becomes a section that easily introduces liquid using capillary action. The high-density section DH is a section that easily introduces liquid, but because of the smaller voids, its liquid retention capacity is relatively low. The low-density section DL is a section where the voids are larger than in the high-density section DH, so the liquid introduction is weaker than in the high-density section DH, but because of the larger voids, its liquid retention capacity is relatively high.

[0134] like Figure 7As shown, by making the high-density portion DH wavy along the length direction, it is easy to provide a low-density portion DL adjacent to the high-density portion DH in the length direction. Therefore, during wear, it is easy to utilize capillary action to introduce liquid temporarily absorbed (retained) in the low-density portion DL to the high-density portion DH adjacent to the low-density portion DL on one side in the length direction, and to further diffuse liquid introduced into the high-density portion DH that is not completely retained into the low-density portion DL adjacent to the high-density portion DH on one side in the length direction. By performing the above operation once or multiple times, it is easy to promote the diffusion of liquid to the outer side in the length direction.

[0135] Regarding the high-density section DH, the preferred option is, as follows: Figure 8 As shown, the high-density section DH has a bottomed recess. That is, preferably, the high-density section DH does not have a portion that is intentionally continuous in the thickness direction, different from the gaps formed by the fibers 3f.

[0136] Moreover, such as Figure 8 As shown, the skin-side surface of the absorber 3 has a skin-side concave portion and a skin-side convex portion. The non-skin-side surface of the absorber 3 has a non-skin-side concave portion and a non-skin-side convex portion. Specifically, in Figure 8 In this design, the skin-side concave portion of the absorber 3 is the skin-side surface of the high-density portion DH, and the skin-side convex portion is the skin-side surface of the low-density portion DL. Similarly, the non-skin-side concave portion of the absorber 3 is the non-skin-side surface of the high-density portion DH, and the non-skin-side convex portion is the non-skin-side surface of the low-density portion DL. In other words, the absorber 3 has an inwardly concave portion in the thickness direction not only on the skin-side surface but also on the non-skin-side surface. By having both skin-side concave and skin-side convex portions on the skin-side surface of the absorber 3, the surface area of ​​the skin-side surface of the absorber 3 can be increased, thereby improving absorbency. Furthermore, the absorbency and diffusion properties of the absorber 3 can be improved by utilizing the capillary-based liquid introduction of the high-density portion DH and the liquid retention of the low-density portion DL. During wear, the skin-side concave portion is easily separated from the skin-side sheet 2, thus reducing the possibility of excrement temporarily absorbed by the absorber 3 returning to the skin-side sheet 2, and alleviating discomfort to the wearer's skin. Furthermore, by having both concave and convex portions on the non-skin side, the absorbency and diffusion of excrement can be improved in the same way as the skin side. Moreover, since the non-skin side of the absorbent 3 is close to the non-skin side (back panel 4) of the sanitary napkin 1, it is easy to visually confirm the diffusion of excrement in the concave portion on the non-skin side of the sanitary napkin 1 through the back panel 4 after wearing it. Therefore, it is easy for the wearer to recognize that the sanitary napkin 1 is an absorbent item with improved diffusion.

[0137] Furthermore, when the absorbent 3 has a non-skin-side concave portion and a non-skin-side convex portion on the non-skin side, it is preferable that, when the sanitary napkin 1 is viewed along the thickness direction, the non-skin-side convex portion overlaps with the adhesive portion 41. In the sanitary napkin 1 of this embodiment, as... Figure 8 As shown, when viewed along the thickness direction, the skin-side concave portion (high-density portion DH) and the non-skin-side concave portion are positioned at the same location, as are the skin-side convex portion (low-density portion DL) and the non-skin-side convex portion. Therefore, as Figure 10 As shown, when viewed along the thickness direction, the portion having the skin-side protrusion (low-density portion DL) overlapping with the adhesive portion 41 also has a portion where the non-skin-side protrusion 41 overlaps with the adhesive portion 41. By providing such an absorbent body 3 and adhesive portion 41, when the sanitary napkin 1 is fixed to clothing (underwear) by means of the adhesive portion 41 during wear, it is easier to apply force to the portion where the non-skin-side concave portion overlaps with the adhesive portion 41 when viewed along the thickness direction, compared to the portion where the non-skin-side concave portion overlaps with the adhesive portion 41 when viewed along the thickness direction. Therefore, it is easier to fix the sanitary napkin 1 to the clothing, reducing the possibility of positional displacement of the sanitary napkin 1 after fixing. Furthermore, when removing the sanitary napkin 1 from the clothing after wear (use), it is easier to apply force to the portion where the non-skin-side protrusion overlaps with the adhesive portion 41 when viewed along the thickness direction, thus making the removal of the sanitary napkin 1 easier.

[0138] Furthermore, it is preferable that, when the sanitary napkin 1 is viewed along the thickness direction, one of the multiple high-density portions DH, the high-density portion DHa, has a portion that overlaps with one of the multiple adhesive portions 41, the adhesive portion 41a, and a portion that does not overlap with that adhesive portion 41a. Figure 11 Yes Figure 10 The diagram illustrates the first high-density portion DHa and the first adhesive portion 41a in the shown section. Figure 10 In the diagram, the first high-density portion DHa and the first adhesive portion 41a are represented by thick lines. Figure 10 In the diagram, the portion of the first high-density portion DHa that overlaps with the first adhesive portion 41a is indicated by black as the first overlapping portion Ra, and the portion of the first high-density portion DHa that does not overlap with the first adhesive portion 41a is designated as the first non-overlapping portion Na.

[0139] Furthermore, in the first high-density section DHa, as described above, one side alternately faces the width direction (e.g., Figure 11 The protruding convex part on the right side and the other side facing the width direction (e.g.) Figure 11 In the case of a waveform with a protruding convex portion on the left side, it is preferable to have, as shown in the example... Figure 11 As shown, one side of the first high-density section DHa in the width direction ( Figure 11The right end (ehx) is positioned on the side of the width direction of the first adhesive portion 41a, which is closer to the side of the width direction of the first adhesive portion 41a. In this case, by including the sanitary napkin 1 with an absorbent body 3 having potentially curled fibers 3f and a high-density portion DH along the length direction, and including overlapping portions R and non-overlapping portions N, the wearability is improved by increasing the diffusion and fit of excrement during wear, and reducing the possibility of adhesion between the adhesive portions 41.

[0140] Furthermore, as described above, the high-density portion DH (first high-density portion DHa) has higher stiffness compared to the low-density portion DL. Additionally, the portion with the adhesive portion 41 has higher stiffness compared to the portion without the adhesive portion 41. In this embodiment, the side end (one-sided end e41x) of the adhesive portion 41 (first adhesive portion 41a) is provided approximately parallel to the length direction. Therefore, the outermost linear side end of the adhesive portion 41 in the width direction is prone to becoming the part that comes into contact with the wearer's thigh during wear, and the wearer easily feels the stiffness when closing their thighs, easily causing a sense of incongruity and discomfort. In response, when the first adhesive portion 41a is located at the outermost position among the multiple adhesive portions 41, the first high-density portion DHa is wavy, and the one-sided end e41x of the first high-density portion DHa in the width direction is located further along the width direction than the one-sided end e41x of the first adhesive portion 41a. The end ehx on one side of the first high-density portion DHa in the width direction is the portion of the first high-density portion DHa located at the outermost position in the width direction, and the end ehy on the other side of the high-density portion DHa, described later, is the portion of the first high-density portion DHa located at the other outermost position in the width direction. Therefore, when the wearer brings their thighs together in the left-right (width direction) inward direction, the convex portion of the end ehx on one side of the first high-density portion DHa in the width direction, which protrudes from the first adhesive portion 41a towards the width direction, is more likely to come into contact with the wearer's thigh. This reduces the likelihood that the end e41x on one side of the first adhesive portion 41a in the width direction will come into linear contact with the wearer's thigh, and reduces the portion that causes the wearer's thigh to feel stiffness. As a result, it is easier to reduce the sense of incongruity and discomfort caused to the wearer when wearing the garment.

[0141] In the case of having such a first high-density portion DHa, it is preferable to have, as Figure 11As shown, the length Lhx from one end ehx in the width direction of the first high-density portion DHa to one end e41x in the width direction of the first adhesive portion 41a is different from the length Lhy from the other end ehy in the width direction of the first high-density portion DHa to the other end e41y in the width direction of the first adhesive portion 41a (Lhx ≠ Lhy). As described above, the first high-density portion DHa has higher stiffness than the low-density portion DL, and the first adhesive portion 41a has higher stiffness than the portion where the adhesive portion 41 is not provided. Therefore, both ends of the first high-density portion DHa and both ends of the first adhesive portion 41a are parts whose stiffness is easily variable. To address this, by making the length Lhx from one end ehx in the width direction of the first high-density portion DHa to one end e41x in the width direction of the first adhesive portion 41a different from the length Lhy from the other end ehy in the width direction of the first high-density portion DHa to the other end e41y in the width direction of the first adhesive portion 41a, it is easy to irregularly arrange portions with varying stiffness. Therefore, even if the sanitary napkin 1 (absorbent 3) has potentially curled fibers 3f with curlability, causing the sanitary napkin 1 to be prone to deformation, compared to a case where the stiffness of the sanitary napkin 1 varies regularly, such as a linear variation along the length direction, it is easier to mitigate the deformation of the sanitary napkin 1 and further reduce the possibility of the adhesive portions 41 sticking to each other.

[0142] Furthermore, the first high-density portion DHa can be any part of a plurality of high-density portions DH. Alternatively, among the plurality of high-density portions DH, either all of the high-density portions DH can be the first high-density portion DHa having the characteristics described above, or at least one high-density portion DH can be the first high-density portion DHa as described above.

[0143] In addition, preferably, such as Figure 6A As shown, the high-density portion DH of the absorbent 3 has a protrusion TH protruding towards the skin side and a recessed portion UH recessed towards the non-skin side on the skin side. In this embodiment, the absorbent 3 is a nonwoven fabric sheet formed from potentially crimped fibers 3f; therefore, the aforementioned protrusion TH and recessed portion UH are formed by the undulations created by these crimped potentially crimped fibers 3f. The high-density portion DH is provided with a protrusion TH protruding towards the skin side and a recessed portion UH of the fiber 3f located on the non-skin side. Preferably, the length Udh between the skin-side end tu of the recessed portion UH and the skin-side end tt of the protrusion TH in the skin-side of the high-density portion DH is greater than the length Sdh between the skin-side end tt of the protrusion TH and the skin-side end of the low-density portion DL (refer to...). Figure 8)Short (Udh < Sdh). The skin-side end tu of the recessed portion UH in the skin side of the high-density portion DH is the most recessed position (the portion of the fiber located at the position closest to the non-skin side) among the fibers 3f that can be seen when observing the high-density portion DH of the absorber 3 from the skin side. The skin-side end tt of the protruding portion TH in the skin side of the high-density portion DH is the end of the high-density portion DH closest to the skin side. In short, the skin side of the high-density portion DH is provided with concavities and convexities formed by fibers, and the degree (length in the thickness direction) Udh of the concavities and convexities on the skin side of the high-density portion is shorter than the length Sdh in the thickness direction from the skin side of the high-density portion DH to the skin side of the low-density portion DL. Thus, by making the length Udh shorter than the length Sdh, compared with the case where the length Udh is greater than or equal to the length Sdh, it is easier to introduce excreted liquid from the low-density portion DL toward the high-density portion DH by capillary action at the high-density portion DH, and it is easier to diffuse the excreted liquid absorbed by the absorber 3 in the length direction by the high-density portion DH extending in the length direction. In addition, it is easy to make the excreted liquid introduced into the high-density portion DH diffuse horizontally (plane direction) and in the length direction within the high-density portion DH.

[0144] In addition, as described above, the sanitary napkin 1 has a backsheet 4, which is provided at a position closer to the non-skin side than the absorber 3 and is the non-skin side of the sanitary napkin 1. The absorber 3 and the backsheet 4 are fixed by a plurality of bonding portions 45. The plurality of bonding portions 45 are formed along the length direction. The plurality of bonding portions 45 are portions coated with an adhesive such as a hot-melt adhesive. Figure 12 It is a diagram illustrating the high-density portion DH and the bonding portions 45. In such a sanitary napkin 1, preferably, the minimum value D45 of the distances between the bonding portions 45 adjacent to each other in the width direction is smaller than the minimum value Ddh of the distances in the width direction between the high-density portions DH adjacent to each other in the width direction among the plurality of high-density portions DH (Ddh < D45). Thus, by making the minimum value D45 of the distances between the bonding portions 45 smaller than the minimum value Ddh of the distances in the width direction between the high-density portions DH, compared with the case where the minimum value D45 of the distances between the bonding portions 45 is larger than the minimum value Ddh of the distances in the width direction between the high-density portions DH, it is easier to widely arrange the bonding portions 45 between the absorber 3 and the backsheet 4. Thereby, it is easy to keep the backsheet 4 in a planar shape, so the possibility of the bonding portions 41 provided on the non-skin side surface of the backsheet 4 bonding to each other can be reduced, and the discomfort during wearing and the leakage of excreted liquid caused by the deformation of the sanitary napkin 1 due to the bonding of the bonding portions 41 to each other can be alleviated.

[0145] ===Other Embodiments===

[0146] The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the interpretation of the present invention. The present invention can be modified and improved without departing from its spirit, and the present invention naturally includes its equivalents.

[0147] Figure 13 This is a diagram showing a variation of sanitary napkin 100. Figure 13 This diagram shows the sanitary napkin 100 viewed from the non-skin side, but for ease of explanation, the high-density section DH is indicated by a solid line. Hereinafter, regarding the sanitary napkin 100, the differences from the sanitary napkin 1 described above will be primarily explained. For parts whose structure is common to the sanitary napkin 1 described above, the reference numerals will be the same, and a detailed description of the basic structure of the sanitary napkin 100 will be omitted. Figure 13 The structure of the sanitary napkin 100 shown is largely the same as that of the sanitary napkin 1 described above, except for the structure of the adhesive portion 41 and adhesive area 42 on the non-skin side.

[0148] Multiple adhesive portions 41 are provided on the non-skin side of the sanitary napkin 100. Similar to the sanitary napkin 1, each adhesive portion 41 of the sanitary napkin 100 is an area coated with an adhesive such as a hot melt adhesive.

[0149] In sanitary napkin 100, the arrangement of the adhesive portion 41 differs from that of sanitary napkin 1 described above. Specifically, as follows: Figure 13 As shown, on the non-skin side of the sanitary napkin 100, seven strip-shaped adhesive portions 41 extending along the length direction are provided with predetermined intervals in the width direction and adjacent adhesive portions 41 separated from each other in the width direction. These seven adhesive portions 41 form an adhesive area 42. When viewed along the thickness direction, all of these adhesive portions 41 (adhesive area 42) are positioned to overlap with the absorbent body 3. Furthermore, the central adhesive portion 41 of the seven adhesive portions 41 is positioned to overlap with the center CC of the sanitary napkin 1 when viewed along the thickness direction.

[0150] Even with multiple adhesive portions 41 configured in this way, the nonwoven fabric, including a high-density portion DH extending along the length direction and fibers 3f containing potentially crimped fibers, facilitates the diffusion of excrement in the length direction. It also helps maintain the gaps created by the inter-fiber gaps between the fibers 3f. Even when force is applied to the absorbent 3, the fibers 3f themselves are not easily deformed by pressure, and the gaps between the fibers 3f are easily maintained, thus maintaining the volume of the fibers 3f. Furthermore, since excrement is easily retained in these gaps, diffusion, absorbency, and wearability are improved during wear. Additionally, by having an overlapping portion that overlaps with the adhesive portion 41 and a non-overlapping portion that does not overlap with the adhesive portion 41 when viewed along the thickness direction, it is easy to balance the following of clothing at the overlapping portion with the following of the wearer's body at the non-overlapping portion during wear, thus improving the fit of the sanitary napkin 100. Moreover, the stiffness of the high-density portion DH at the non-overlapping portion can reduce the possibility of the adhesive portions 41 sticking together.

[0151] Furthermore, the adhesive portion 41 is not limited to sanitary napkin 1 or sanitary napkin 100; in absorbent articles, the adhesive portion 41 can also be in any position, size, shape, etc.

Claims

1. An absorbent article, characterized in that, The absorbent material, when unfolded, has intersecting length, width, and thickness directions. This absorbent article has: Absorbent materials with absorbent properties; and Multiple adhesive portions are located on the non-skin-friendly side of the absorbent material. The absorbent has a nonwoven fabric comprising a plurality of fibers including potentially crimped fibers. The absorber has multiple first regions and second regions. The first region is a linear region extending along the length direction. Compared with the second region, the first region has a higher fiber density and a thinner thickness. In the width direction, The plurality of first regions are configured separately from each other. The plurality of adhesive portions are arranged separately from each other. When viewed along the thickness direction, the first region has an overlapping portion that overlaps with the adhesive portion and a non-overlapping portion that does not overlap with the adhesive portion.

2. The absorbent article according to claim 1, characterized in that, The total area of ​​the overlapping portion is larger than the total area of ​​the non-overlapping portion.

3. The absorbent article according to claim 1, characterized in that, The total area of ​​the overlapping portion is smaller than the total area of ​​the non-overlapping portion.

4. The absorbent article according to any one of claims 1 to 3, characterized in that, The non-overlapping portion is provided at one end of the absorber along its length direction.

5. The absorbent article according to any one of claims 1 to 3, characterized in that, The non-overlapping portion is provided at the center of the absorber in the width direction.

6. The absorbent article according to any one of claims 1 to 3, characterized in that, The first region is a waveform that alternately has a protrusion protruding to one side in the width direction and a protrusion protruding to the other side in the width direction.

7. The absorbent article according to any one of claims 1 to 3, characterized in that, When viewed along the thickness direction, one of the plurality of first regions has a portion that overlaps with one of the plurality of adhesive portions and a portion that does not overlap with that adhesive portion. The first region is a waveform that alternately has a protrusion protruding to one side in the width direction and a protrusion protruding to the other side in the width direction. One end of the first region in the width direction is positioned closer to one side in the width direction than the other end of the adhesive portion in the width direction.

8. The absorbent article according to claim 7, characterized in that, The length from one end of the first region in the width direction to one end of the adhesive portion in the width direction is different from the length from the other end of the first region in the width direction to the other end of the adhesive portion in the width direction.

9. The absorbent article according to any one of claims 1 to 3, characterized in that, The absorber has a skin-side concave portion and a skin-side convex portion on its skin-side surface. The non-skin side of the absorber has a non-skin side concave portion and a non-skin side convex portion.

10. The absorbent article according to claim 9, characterized in that, When viewed along the thickness direction, the absorbent article has a portion where the non-skin side protrusion overlaps with the adhesive portion.

11. The absorbent article according to any one of claims 1 to 3, characterized in that, The first region has a protrusion that extends towards the skin side and a depression that extends towards the non-skin side. The length between the skin-side end of the concave portion and the skin-side end of the protruding portion in the skin side of the first region is shorter than the length between the skin-side end of the protruding portion in the skin side of the first region and the skin-side end closest to the skin side in the skin side of the second region.

12. The absorbent article according to any one of claims 1 to 3, characterized in that, The absorbent article has a non-skin side panel, which is located on the non-skin side of the absorbent body and is the non-skin side surface of the absorbent article. The absorbent body and the non-skin side panel are secured by a plurality of adhesive portions along the length direction. The minimum distance between adjacent adhesive portions in the width direction is smaller than the minimum distance in the width direction between adjacent first regions in the plurality of first regions.

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