Underwear-type absorbent items

Abstract

This invention provides an absorbent underwear-type article that makes it difficult for the wearer to feel itching. An absorbent underwear-type article (1) is provided, comprising an outer body (5) and an absorbent main body (3) having an absorbent core (27a). The absorbent underwear-type article (1) comprises: a skin-contact sheet (21) having a skin-contact surface (23a); and a counter sheet (25) disposed opposite to the skin-contact sheet (21). The absorbent underwear-type article (1) has an adhesive preparation area (123) provided with an adhesive for joining the skin-contact sheet (21) and the counter sheet (25). The absorbent underwear-type article (1) has an adhesion-reducing agent preparation area (41) in the adhesive preparation area (123), provided with an adhesion-reducing agent that reduces the adhesion based on the adhesive.

Description

Technical Field

[0001] This disclosure relates to absorbent articles in the form of underwear. Background Technology

[0002] Absorbent materials in the form of underwear are known to exist.

[0003] For example, Patent Document 1 discloses an absorbent underwear-type article having intersecting vertical, horizontal, and front-back directions, and having an absorbent body and an outer body with liquid absorbency. The outer body has a waistband that is elastic in the horizontal direction and is arranged to cover the non-skin side of the absorbent body. The article is characterized in that a volatile cooling agent is applied to the absorbent body, and both ends of the absorbent body in the length direction have at least one body side end piece constituting the absorbent body and at least one outer body side piece constituting the outer body when viewed along the front-back direction. When the waistband is stretched in the horizontal direction, the joint area where adjacent pieces of the body side end piece and the outer body side piece in the front-back direction are joined together is intermittently provided in the horizontal direction.

[0004] In addition, medication is applied to the top of the sanitary napkin.

[0005] For example, Patent Document 2 discloses an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet. The liquid-permeable top sheet has an uneven structure including protrusions and concave portions on its skin-contact surface, and in the area of ​​contact with the excretory opening, the liquid-permeable top sheet contains at least the protrusions a blood-lubricating agent with a thickness of 0.01–80 mm at 40°C. 2 Kinematic viscosity of / s, water retention of 0.01 to 4.0% by mass, and weight-average molecular weight of less than 1000.

[0006] Prior art literature

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2021-164529

[0009] Patent Document 2: International Publication No. 2013 / 129236 Utility Model Content

[0010] The problem to be solved by utility models

[0011] Neither Patent Document 1 nor Patent Document 2 discloses the absorbent underwear-type article disclosed herein.

[0012] Therefore, the purpose of this disclosure is to provide an absorbent underwear-type garment that makes it difficult for the wearer to feel itching.

[0013] Methods for solving problems

[0014] The inventors have discovered an absorbent article in the form of underwear, which has a length direction and a width direction, and comprises an outer body and an absorbent body with an absorbent core. The absorbent article, in its unfolded state, has mutually orthogonal length, width, and thickness directions, and is divided into a front region and a rear region. The front region is positioned at a position slightly forward of the center of the length direction, and the rear region is positioned slightly backward of the center of the length direction. The absorbent article comprises: a skin-contact sheet having a skin-contact surface; and a counter sheet disposed opposite to the skin-contact sheet. The absorbent article has an adhesive preparation region, which is provided with an adhesive for bonding the skin-contact sheet and the counter sheet. The absorbent article also has an adhesion-reducing agent preparation region in the adhesive preparation region, which is provided with an adhesion-reducing agent that reduces the bonding based on the adhesive.

[0015] Preferably, the underwear-type absorbent article does not contain a volatile cooling agent.

[0016] Preferably, the bonding reducer configuration region is configured in the outer casing.

[0017] Preferably, in the unfolded state, the bonding reducer configuration area is positioned on the outer side of the absorbent body along the length direction.

[0018] Preferably, in the unfolded state, the bonding reducer configuration region is disposed in a portion adjacent to at least one of the two ends of the absorbent body in the length direction.

[0019] Preferably, in the unfolded state, the bonding reducer configuration area is located in a portion adjacent to the outer edge of the absorbent body.

[0020] Preferably, the underwear-type absorbent article has a pair of locking portions that lock the front region and the rear region in place, and in the unfolded state, the bonding reducer placement area is disposed between the pair of locking portions of the outer body.

[0021] Preferably, in the unfolded state, the outer casing has a region consisting of three or more sheets in the thickness direction, and the bonding reducer placement region is disposed in the region consisting of three or more sheets.

[0022] Preferably, in the unfolded state, the outer body has a width-direction elastic region, the width-direction elastic region has an elastic member capable of stretching and contracting along the width direction, and the bonding reducer placement region is disposed in the width-direction elastic region.

[0023] Preferably, in the unfolded state, the outer body has a width-direction elastic region and a width-direction non-elastic region. The width-direction elastic region has an elastic member that can stretch and contract along the width direction. The width-direction non-elastic region is disposed at a position closer to the center in the length direction than the width-direction elastic region and does not have an elastic member that can stretch and contract along the width direction. The bonding reducer placement region is disposed in the width-direction non-elastic region.

[0024] Preferably, in the unfolded state, the bonding reducer configuration area is configured in a region that does not overlap with the absorbent body in the thickness direction.

[0025] Preferably, the bonding reducer configuration region is configured in the absorbent body.

[0026] Preferably, the bonding reducer is an oily agent.

[0027] Preferably, in the unfolded state, the underwear-type absorbent article is divided into a ventral region, a crotch region, and a dorsal region, and in the unfolded state, the bonding reducer configuration region is configured in the crotch region of the absorbent body.

[0028] Preferably, in the unfolded state, the absorbent body is divided into a central region in the length direction, a front region in the length direction, and a rear region in the length direction. The central region in the length direction is disposed at the center of the length direction, and the front region and the rear region in the length direction are respectively disposed at the front end position and the rear end position in the length direction near the central region in the length direction. Furthermore, the absorbent body is divided into a central region in the width direction and two side regions in the width direction. The central region in the width direction is disposed at the center of the width direction, and the two side regions in the width direction are disposed on the two outer sides of the central region in the width direction. In the unfolded state, the bonding reducing agent disposal region is disposed in the central region in the length direction and the central region in the width direction of the absorbent body.

[0029] Preferably, in the unfolded state, the adhesive preparation area is disposed in the front region in the length direction, the rear region in the length direction, and the two side regions in the width direction of the absorbent body, and the bonding reducer preparation area is not disposed in the rear region in the length direction and the two side regions in the width direction of the absorbent body.

[0030] Preferably, in the unfolded state, the bonding reducer configuration region is disposed in the absorbent body in the front region and the rear region, and the adhesive configuration region is disposed in the absorbent body in the rear region. The area of ​​the bonding reducer configuration region in the absorbent body in the rear region is smaller than the area of ​​the bonding reducer configuration region in the absorbent body in the front region, and smaller than the area of ​​the adhesive configuration region in the absorbent body in the rear region.

[0031] Preferably, the underwear-type absorbent article has an elastic member configuration area, the elastic member configuration area is disposed on the non-skin side of the absorbent core, and the elastic member is disposed along the length direction from the front region to the rear region, and in the unfolded state, the bonding reducer configuration area and the elastic member configuration area overlap in the thickness direction.

[0032] Preferably, in the unfolded state, the absorbent body has a compression portion in the region that overlaps with the bonding reducer configuration region and the elastic member configuration region in the thickness direction, the compression portion compressing the absorbent core from the non-skin side, and the compression portion extending along the length direction from the center of the absorbent core in the width direction.

[0033] Preferably, in the unfolded state, the absorbent core has a low unit area weight region in the thickness direction of the region overlapping with the bonding reducer configuration region and the elastic member configuration region. The low unit area weight region has a unit area weight less than the average unit area weight of the absorbent core, and the low unit area weight region extends along the length direction from the center of the absorbent core in the width direction.

[0034] Preferably, the absorbent body has a pair of compression portions that compress the skin-adhesive sheet, the opposing sheet, and the absorbent core, and extend along the length direction, with the bonding reducer placement area disposed between the pair of compression portions of the absorbent body.

[0035] Preferably, in the unfolded state, the absorbent body has a plurality of ridges protruding toward the skin and extending along the width direction, and the bonding reducer placement area is disposed on the plurality of ridges.

[0036] Preferably, in the unfolded state, the absorbent body is divided into a central region in the length direction, a front region in the length direction, and a rear region in the length direction. The central region in the length direction is disposed at the center of the length direction, and the front and rear regions in the length direction are respectively disposed at the front end and the rear end of the central region in the length direction. Furthermore, the absorbent body is divided into a central region in the width direction and two side regions in the width direction. The central region in the width direction is disposed at the center of the width direction, and the two side regions in the width direction are disposed on the two outer sides of the central region in the width direction. The bonding agent placement area is disposed in the central region in the length direction and the central region in the width direction. In the bonding reducer configuration area, the skin-adhesive sheet has a low unit area weight region for the skin-adhesive sheet bonding reducer, the low unit area weight region for the skin-adhesive sheet bonding reducer having a unit area weight of the bonding reducer that is lower than the average unit area weight of the bonding reducer in the skin-adhesive sheet. In the bonding reducer configuration area, the absorbent core has a high unit area weight region for the absorbent core bonding reducer, the high unit area weight region for the absorbent core bonding reducer having a unit area weight of the bonding reducer that is higher than the average unit area weight of the bonding reducer in the absorbent core. In the unfolded state, the low unit area weight region for the skin-adhesive sheet bonding reducer and the high unit area weight region for the absorbent core bonding reducer overlap in the thickness direction.

[0037] Preferably, the absorbent body has a high unit area weight portion in the absorbent core, the high unit area weight portion having a unit area weight higher than the average unit area weight of the absorbent core, and in the unfolded state, the low unit area weight region of the skin contact patch bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the high unit area weight portion of the absorbent core.

[0038] Preferably, the underwear-type absorbent article is folded at the folded portion, and in the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap at the folded portion in the thickness direction.

[0039] Preferably, the absorbent body is folded by three folds extending along the width direction, and divided by the three folds into four regions arranged in the length direction, namely two end regions at both ends and two central regions between the two end regions. In the unfolded state, the absorbent body satisfies either (i) or (ii) below: (i) the two end regions and the two central regions each have the bonding reducer configuration region, and the bonding reducer in the two end regions has a smaller unit area weight compared to the two central regions; (ii) the two central regions each have the bonding reducer configuration region, but each of the two end regions does not have the bonding reducer configuration region.

[0040] Effects of the utility model

[0041] In the underwear-type absorbent articles disclosed herein, the wearer is unlikely to feel itching in the area where the bonding reducer is applied. Attached Figure Description

[0042] Figure 1 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0043] Figure 2 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0044] Figure 3 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0045] Figure 4 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0046] Figure 5 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0047] Figure 6 This is a diagram illustrating the shorts-type sanitary napkin 1 of the first embodiment.

[0048] Figure 7 This is a diagram illustrating the shorts-type sanitary napkin 1 of the second embodiment.

[0049] Figure 8 This is a diagram illustrating the shorts-type sanitary napkin 1 of the second embodiment.

[0050] Figure 9 This is a diagram illustrating the shorts-type sanitary napkin 1 of the second embodiment.

[0051] Figure 10 This is a diagram illustrating the shorts-type sanitary napkin 1 of the second embodiment.

[0052] Explanation of reference numerals in the attached figures

[0053] 1. Panty-style sanitary napkin

[0054] 3 Absorbent Subjects

[0055] 5 outer body

[0056] 7 Anterior region

[0057] 9 Rear side area

[0058] 15. Ventral region

[0059] 17. Groin area

[0060] 19. Dorsal region

[0061] 21 films

[0062] 25 Second Film

[0063] 27 absorbers

[0064] 27a absorber core

[0065] 29 Impermeable Film

[0066] 31 Elastic Components

[0067] 33 Elastic Component Configuration Area

[0068] 35 Hydrophobic Nonwoven Fabric Sheet

[0069] 41. Bond reducing agent configuration area

[0070] 111 First Outer Sheet

[0071] 121 Skin-adhesive Joint

[0072] 123 Adhesive preparation area. Detailed Implementation

[0073] Specifically, this disclosure relates to the following methods.

[0074] [Method 1]

[0075] An absorbent article in the form of underwear, the absorbent article having a length direction and a width direction, and comprising an outer body and an absorbent main body having an absorbent core, characterized in that,

[0076] The absorbent underwear-type garment, when unfolded, has mutually orthogonal length, width, and thickness directions, and is divided into a front region and a rear region. The front region is positioned slightly forward of the center along the length direction, and the rear region is positioned slightly backward of the center along the length direction.

[0077] The absorbent underwear-type garment comprises: a skin-contacting sheet having a skin-contacting surface; and an opposing sheet disposed opposite to the skin-contacting sheet.

[0078] The underwear-type absorbent article has an adhesive preparation area, which is provided with adhesive for bonding the skin-contact pad and the opposing pad.

[0079] The underwear-type absorbent article has an adhesion reducing agent configuration area in the adhesive configuration area, the adhesion reducing agent configuration area being configured with an adhesion reducing agent that reduces the adhesion based on the adhesive.

[0080] Because the absorbent underwear has an adhesive placement area, which is provided with an adhesive for bonding the skin-contact sheet and the opposing sheet, the skin-contact sheet and the opposing sheet are difficult to shift, and the absorbent underwear can perform its function.

[0081] On the other hand, in typical absorbent underwear, the skin in direct contact with the underwear may experience itching due to friction with the skin-adhesive tabs. This itching is particularly pronounced in areas where adhesive is applied, especially where the skin-adhesive tabs, which are engaged with other components (such as opposing tabs) and are difficult to separate and move (with less play), come into contact with the skin. Furthermore, the itching tends to be more noticeable depending on sleeping posture, among other factors.

[0082] The underwear-type absorbent article also includes an adhesion-reducing agent configuration area in a portion of the adhesive configuration area. This adhesion-reducing agent configuration area is provided with an adhesion-reducing agent that reduces adhesion based on the adhesive. Therefore, in the adhesion-reducing agent configuration area, the adhesion between the skin-contact piece and the opposing piece is reduced by the adhesion-reducing agent. Consequently, the skin-contact piece easily separates from and moves with the opposing piece, allowing the wearer's skin to separate from the opposing piece and move together with the skin-contact piece, making it difficult to feel itching caused by friction between the wearer's skin and the skin-contact piece.

[0083] As described above, in the aforementioned underwear-type absorbent articles, the wearer is unlikely to experience itching in the area where the bonding reducer is applied.

[0084] [Method 2]

[0085] The absorbent article of the underwear type according to method 1 is characterized in that the absorbent article of the underwear type does not contain a volatile cooling agent.

[0086] The absorbent underwear-type garment, for example, does not contain a prescribed cooling agent in the skin-contacting pad, thus preventing itching caused by volatile cooling agents irritating the wearer's skin.

[0087] [Method 3]

[0088] The absorbent article of the underwear type according to method 1 or 2 is characterized in that the bonding reducer configuration area is disposed in the outer body.

[0089] In the aforementioned absorbent underwear, since the bonding reducer configuration area is located on the outer body, the wearer is unlikely to experience itching in the bonding reducer configuration area of ​​the outer body.

[0090] [Method 4]

[0091] The absorbent article of the underwear type according to any one of methods 1 to 3 is characterized in that, in the unfolded state, the bonding reducing agent configuration area is positioned on the outer side of the absorbent body in the length direction.

[0092] Generally speaking, the waistband area of ​​absorbent underwear, which is the area that secures the underwear to the wearer's waist, tends to press against the wearer's skin, making the waistband area particularly prone to itching. This itching is more likely to be felt under conditions of increased body pressure, such as when sleeping.

[0093] In the aforementioned underwear-type absorbent article, since the bonding reducer configuration area is located on the outer side in the longitudinal direction of the absorbent body, the wearer is less likely to feel itching in the bonding reducer configuration area on the outer side in the longitudinal direction of the absorbent body.

[0094] [Method 5]

[0095] The absorbent article of the underwear type according to any one of methods 1 to 4 is characterized in that, in the unfolded state, the bonding reducing agent configuration area is disposed in a portion adjacent to at least one of the two ends of the absorbent body in the length direction.

[0096] Generally speaking, since the absorbent body protrudes beyond the skin compared to the outer body, the wearer's skin is prone to irritation and itching at the outer edges of the absorbent body, especially at both ends along the length.

[0097] In the aforementioned underwear-type absorbent article, the adhesion reducing agent configuration area is disposed on the periphery of at least one of the two ends along the length of the absorbent body. Therefore, the wearer is less likely to experience itching in the adhesion reducing agent configuration area adjacent to at least one of the two ends along the length of the absorbent body.

[0098] [Method 6]

[0099] The absorbent article of the underwear type according to any one of methods 1 to 5 is characterized in that, in the unfolded state, the bonding reducing agent configuration area is disposed in a portion adjacent to the outer edge of the absorbent body.

[0100] Generally speaking, because the absorbent body protrudes beyond the skin compared to the outer body, the wearer's skin is prone to irritation and itching at the outer edge of the absorbent body.

[0101] In the aforementioned underwear-type absorbent article, the adhesion-reducing agent configuration area is located on the portion adjacent to the outer edge of the absorbent body. Therefore, the wearer is less likely to experience itching in the adhesion-reducing agent configuration area located on at least a portion of the outer edge of the absorbent body.

[0102] [Method 7]

[0103] The absorbent article of the underwear type according to any one of embodiments 1 to 6 is characterized in that the absorbent article of the underwear type has a pair of locking parts for locking the front side region and the rear side region, and in the unfolded state, the bonding reducer placement area is disposed between the pair of locking parts of the outer body.

[0104] Generally speaking, the waistband area of ​​absorbent underwear, which is the area that secures the underwear to the wearer's waist, tends to press against the wearer's skin, making the waistband area particularly prone to itching. This itching is more likely to be felt under conditions of increased body pressure, such as when sleeping.

[0105] In the aforementioned underwear-type absorbent articles, because the bonding reducer configuration area is positioned in a designated location, the wearer is unlikely to experience itching in the bonding reducer configuration area around the waist.

[0106] [Method 8]

[0107] The absorbent article of the underwear type according to any one of methods 1 to 7 is characterized in that, in the unfolded state, the outer body has a region of three or more sheets composed of three or more sheets in the thickness direction, and the bonding reducer placement region is disposed in the region of three or more sheets.

[0108] Generally speaking, in absorbent underwear, the more layers of outer fabric there are, the more likely the area will feel stuffy and hot, and the more likely it will feel itchy.

[0109] In the aforementioned absorbent underwear-type garment, the bonding reducer is disposed in three or more sheet areas. Therefore, the wearer is less likely to experience itching in the bonding reducer-dispensed areas within the three or more sheet areas where itching is commonly felt.

[0110] [Method 9]

[0111] The absorbent article of the underwear type according to any one of methods 1 to 8 is characterized in that, in the unfolded state, the outer body has a width-direction elastic region, the width-direction elastic region has an elastic member capable of stretching and contracting along the width direction, and the bonding reducer placement region is disposed in the width-direction elastic region.

[0112] Generally speaking, in absorbent underwear, the areas with higher contractile force generated by elastic components are more likely to cause itching when worn.

[0113] In the aforementioned underwear-type absorbent article, the bonding reducer configuration area is located within a defined width-direction elastic region. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area within the width-direction elastic region, where itching is typically felt.

[0114] [Method 10]

[0115] The absorbent underwear-type article according to any one of methods 1 to 9 is characterized in that...

[0116] In the unfolded state, the outer casing has an elastic region in the width direction and a non-elastic region in the width direction. The elastic region in the width direction has an elastic member capable of stretching and contracting along the width direction. The non-elastic region in the width direction is located closer to the center in the length direction than the elastic region in the width direction, and does not have an elastic member capable of stretching and contracting along the width direction.

[0117] The bonding reducer configuration region is configured in the non-elastic region in the width direction.

[0118] Generally speaking, in absorbent underwear, the area near the center along the length (such as the crotch area) tends to be more prone to itching.

[0119] In the aforementioned underwear-type absorbent article, the bonding reducer is disposed in a non-elastic region along a defined width direction. This defined non-elastic region along the width direction is positioned near the center along the length direction. Therefore, the wearer is less likely to experience itching in the bonding reducer disposal area within the non-elastic region along the width direction, where itching is more likely to occur.

[0120] [Method 11]

[0121] The absorbent article of the underwear type according to any one of methods 1 to 10 is characterized in that, in the unfolded state, the bonding reducing agent configuration area is disposed in a region that does not overlap with the absorbent body in the thickness direction.

[0122] In the aforementioned absorbent underwear-type article, the bonding reducer configuration area is located in the outer casing in a region that does not overlap with the absorbent body in the thickness direction. Therefore, the bonding between the outer casing and the absorbent body is difficult to reduce, allowing the absorbent underwear-type article to function effectively.

[0123] [Method 12]

[0124] The absorbent article of the underwear type according to any one of methods 1 to 11 is characterized in that the bonding reducing agent configuration region is disposed on the absorbent body.

[0125] Generally speaking, in absorbent underwear, because the absorbent core protrudes from the outer casing towards the skin, the part of the skin that comes into contact with the absorbent core is prone to itching when the wearer is wearing it.

[0126] In the aforementioned absorbent underwear, because it is disposed in the absorbent body, the wearer is unlikely to feel itching when wearing the absorbent underwear.

[0127] [Method 13]

[0128] The absorbent article of the underwear type according to any one of methods 1 to 12 is characterized in that the bonding reducer is an oily agent.

[0129] In the aforementioned underwear-type absorbent articles, since the bonding reducer is an oily agent, bodily fluids can easily slide from the skin-adhesive piece through the opposing piece into the absorbent core, thus inhibiting leakage. Furthermore, as a result of inhibiting bodily fluid leakage, the wearer is less likely to experience itching caused by bodily fluids.

[0130] [Method 14]

[0131] The absorbent underwear-type article according to any one of methods 1 to 13 is characterized in that...

[0132] In its unfolded state, the underwear-type absorbent item is divided into a ventral region, a crotch region, and a back region.

[0133] In the unfolded state, the bonding reducer configuration area is disposed in the crotch area of ​​the absorbent body.

[0134] Generally speaking, in absorbent underwear, wearers tend to experience itching in the groin area.

[0135] In the aforementioned underwear-type absorbent article, the bonding reducer is positioned in the crotch area of ​​the absorbent body. Therefore, the wearer is less likely to experience itching in the bonding reducer-positioned area within the crotch area, where itching is commonly felt.

[0136] [Method 15]

[0137] The absorbent underwear-type article according to any one of methods 1 to 14 is characterized in that,

[0138] In the unfolded state, the absorbent body is divided into a central region along the length direction, a front region along the length direction, and a rear region along the length direction. The central region along the length direction is located at the center of the length direction. The front region and the rear region along the length direction are respectively located at the front end and the rear end of the central region along the length direction. Furthermore, the absorbent body is divided into a central region along the width direction and two side regions along the width direction. The central region along the width direction is located at the center of the width direction, and the two side regions along the width direction are located on the two outer sides of the central region along the width direction.

[0139] In the unfolded state, the bonding reducer configuration area is disposed in the central region in the length direction and the central region in the width direction of the absorbent body.

[0140] Generally speaking, in absorbent items, including underwear, the wearer is prone to itching around the anus.

[0141] In the aforementioned underwear-type absorbent article, the bonding reducer is disposed in the central region along both the length and width of the absorbent body. Therefore, the wearer is less likely to experience itching around the discharge opening, where itching is commonly felt.

[0142] [Method 16]

[0143] The absorbent article of the underwear type according to any one of methods 1 to 15 is characterized in that, in the unfolded state, the adhesive preparation area is disposed in the front region in the length direction, the rear region in the length direction, and the two side regions in the width direction of the absorbent body, and the bonding reducer preparation area is not disposed in the rear region in the length direction and the two side regions in the width direction of the absorbent body.

[0144] In the described underwear-type absorbent article, the adhesive application areas are located in the front region, rear region, and both sides in the width direction of the absorbent body, while the bonding reducer application areas are not located in the rear region and both sides in the width direction. Therefore, the absorbent body easily maintains its structure in the front, rear, and both sides in the width direction. In the rear region of the underwear-type absorbent article, body pressure is easily applied, especially in the sleeping position, and a gap is easily created between the buttocks and the absorbent body. Therefore, by maintaining its structure in the rear region and both sides in the width direction of the absorbent body, the absorbent body can easily perform its function.

[0145] [Method 17]

[0146] The absorbent underwear-type article according to any one of methods 1 to 16 is characterized in that...

[0147] In the unfolded state, the bonding reducer configuration area is disposed in the absorbent body in the front and rear regions, and the adhesive configuration area is disposed in the absorbent body in the rear region.

[0148] The area of ​​the bonding reducer configuration region in the absorbent body of the rear region is smaller than the area of ​​the bonding reducer configuration region in the absorbent body of the front region, and smaller than the area of ​​the adhesive configuration region in the absorbent body of the rear region.

[0149] In the aforementioned underwear-type absorbent article, the area of ​​the bonding reducer configuration region in the absorbent body of the rear region is smaller than the area of ​​the bonding reducer configuration region in the absorbent body of the front region, and also smaller than the area of ​​the adhesive configuration region in the absorbent body of the rear region. Therefore, in the absorbent body of the front region, the wearer is less likely to experience itching around the itch-prone area, and in the absorbent body of the rear region, the area in the adhesive configuration region that lacks the bonding reducer configuration region can inhibit separation of the skin-adhesive sheet and the opposing sheet, and can prevent leakage.

[0150] [Method 18]

[0151] The absorbent underwear-type article according to any one of methods 1 to 17 is characterized in that...

[0152] The absorbent underwear-type garment has an elastic member configuration area disposed on the non-skin side of the absorbent core, and the elastic member is provided along the length direction from the front region to the rear region.

[0153] In the unfolded state, the bonding reducer configuration area and the elastic member configuration area overlap in the thickness direction.

[0154] Because the aforementioned absorbent underwear has a designated area for the placement of elastic members, during wear, the absorbent body can deform in such a way that the portion containing the elastic members protrudes towards the wearer and comes into close contact with the wearer, thus suppressing leakage. Furthermore, because the absorbent body of the aforementioned absorbent underwear has an area for the placement of an adhesion-reducing agent that overlaps with the area for the placement of elastic members in the thickness direction, itching can be suppressed in areas of close contact with the wearer where itching is likely to occur.

[0155] [Method 19]

[0156] The absorbent underwear-type article according to any one of methods 1 to 18 is characterized in that,

[0157] In the unfolded state, the absorbent body has a compression portion in the region overlapping with the bonding reducer configuration region and the elastic member configuration region in the thickness direction, and the compression portion compresses the absorbent core from the non-skin side.

[0158] The compression portion extends along the length direction from the center of the absorbent core in the width direction.

[0159] Generally speaking, absorbent underwear with a defined compression section deforms the compression section in a way that protrudes towards the wearer, making it easy for the absorbent body to come into contact with the wearer's skin and preventing leakage. On the other hand, the protruding part of the absorbent body can cause the absorbent body to rub against the wearer's skin, which may cause the wearer to feel itchy.

[0160] In the aforementioned underwear-type absorbent article, the prescribed compression portion is disposed in an area that overlaps in the thickness direction with the area where the bonding reducer is disposed and the area where the elastic member is disposed. Therefore, the wearer is less likely to feel itching caused by friction against the skin-contacting sheet at the protruding portion of the absorbent body. Furthermore, when the bonding reducer is an oily agent, since the protruding portion of the absorbent body easily comes into contact with the wearer's skin, bodily fluids can easily slide from the skin-contacting sheet through the opposing sheet into the absorbent core, thus suppressing leakage. As a result of suppressing bodily fluid leakage, the wearer is less likely to feel itching caused by bodily fluids.

[0161] [Method 20]

[0162] The absorbent underwear-type article according to any one of methods 1 to 19 is characterized in that...

[0163] In the unfolded state, the absorbent core has a low unit area weight region in the thickness direction, which overlaps with the bonding reducer configuration region and the elastic member configuration region. This low unit area weight region has a unit area weight less than the average unit area weight of the absorbent core.

[0164] The low weight-per-unit area region of the absorbent core extends along the length direction from the center of the absorbent core in the width direction.

[0165] Generally speaking, underwear-type absorbent articles with a specified low-weight area of ​​absorbent core deform the low-weight area of ​​absorbent core in a way that protrudes towards the wearer, so that the absorbent body can easily come into contact with the wearer's skin and is less likely to leak bodily fluids. On the other hand, the protruding part of the absorbent body can make the absorbent body more likely to rub against the wearer's skin, which may cause the wearer to feel itchy.

[0166] In the aforementioned underwear-type absorbent article, the designated low-weight-per-unit-area region of the absorbent core is positioned in an area that overlaps in the thickness direction with the region where the bonding reducer is positioned and the region where the elastic member is positioned. Therefore, the wearer is less likely to feel itching caused by friction against the skin-contacting sheet at the protruding portion of the absorbent body. Furthermore, when the bonding reducer is an oil-based agent, since the protruding portion of the absorbent body easily comes into contact with the wearer's skin, bodily fluids can easily slide from the skin-contacting sheet through the opposing sheet into the absorbent core, thus suppressing leakage. As a result of suppressing bodily fluid leakage, the wearer is less likely to feel itching caused by bodily fluids.

[0167] [Method 21]

[0168] The absorbent underwear-type article according to any one of methods 1 to 20 is characterized in that,

[0169] The absorbent body has a pair of compression portions that compress the skin-contacting sheet, the opposing sheet, and the absorbent core, and extends along the length direction.

[0170] The bonding reducer configuration region is disposed between the pair of compression portions of the absorbent body.

[0171] Generally speaking, in absorbent underwear with a pair of compression parts, the absorbent body can easily fit the wearer's body when worn, but the part between the pair of compression parts in the absorbent body is prone to friction with the wearer's skin, which may cause itching.

[0172] In the aforementioned underwear-type absorbent article, the bonding reducer is positioned between a pair of compression portions of the absorbent body. Therefore, the wearer is less likely to experience itching caused by friction against the skin. Furthermore, when the bonding reducer is an oily agent, bodily fluids easily slip from the skin-contacting piece through the opposing piece into the absorbent core, suppressing leakage. As a result of this suppression, the wearer is less likely to experience itching caused by bodily fluids.

[0173] [Method 22]

[0174] The absorbent underwear-type article according to any one of methods 1 to 21 is characterized in that,

[0175] In the unfolded state, the absorbent body has a plurality of ridges that protrude toward the skin and extend along the width direction.

[0176] The bonding reducer configuration area is configured in the plurality of ridges.

[0177] Because the absorbent underwear has multiple ridges, it easily follows the wearer's body when worn. Furthermore, since the bonding agent is disposed in the multiple ridges, itching can be suppressed in the ridges that are prone to causing itching.

[0178] [Method 23]

[0179] The absorbent underwear-type article according to any one of methods 1 to 22 is characterized in that,

[0180] In the unfolded state, the absorbent body is divided into a central region along the length direction, a front region along the length direction, and a rear region along the length direction. The central region along the length direction is located at the center of the length direction. The front region and the rear region along the length direction are respectively located at the front end and the rear end of the central region along the length direction. Furthermore, the absorbent body is divided into a central region along the width direction and two side regions along the width direction. The central region along the width direction is located at the center of the width direction, and the two side regions along the width direction are located on the two outer sides of the central region along the width direction.

[0181] The bonding reducer configuration region is disposed in the central region in the length direction and the central region in the width direction.

[0182] In the bonding reducer configuration area, the skin-adhesive patch has a low unit area weight region for the bonding reducer, wherein the low unit area weight region for the bonding reducer has a lower unit area weight of the bonding reducer than the average unit area weight of the bonding reducer in the skin-adhesive patch.

[0183] In the bonding reducer configuration region, the absorbent core has a region with a high unit area weight of the bonding reducer, wherein the high unit area weight region of the bonding reducer has a higher unit area weight of the bonding reducer than the average unit area weight of the bonding reducer in the absorbent core.

[0184] In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer overlaps with the high unit area weight region of the absorbent core bonding reducer in the thickness direction.

[0185] In the described absorbent underwear-type garment, the central region in both the length and width directions has a low-weight-per-unit-area region for the skin-contact bonding reducer and a high-weight-per-unit-area region for the absorbent core bonding reducer, which overlap in the thickness direction. In the low-weight-per-unit-area region of the skin-contact bonding reducer, the bonding reducer minimizes the adhesion between the skin-contact and the opposing sheet. Therefore, during storage, especially during transportation, the adhesion between the skin-contact and the opposing sheet is less likely to detach, and the absorbent core functions easily when worn, particularly immediately after wearing.

[0186] Next, when the bonding reducer is an oily agent, when wearing an underwear-type absorbent garment, especially when pressure such as body pressure is applied, the oily agent, which is the bonding reducer, can move from the high unit area weight region of the absorbent core bonding reducer, which is located at a position overlapping the low unit area weight region of the bonding reducer of the skin contact sheet in the thickness direction, to the low unit area weight region of the skin contact sheet bonding reducer of the skin contact sheet, and cause the body fluid reaching the skin contact sheet to slide into the absorbent core.

[0187] [Method 24]

[0188] The absorbent underwear-type article according to any one of methods 1 to 23 is characterized in that...

[0189] The absorbent body has a high unit area weight portion within the absorbent core, and this high unit area weight portion has a unit area weight higher than the average unit area weight of the absorbent core.

[0190] In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the high unit area weight portion of the absorbent core.

[0191] In the aforementioned underwear-type absorbent article, the low unit area weight region of the skin-contact bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction at the high unit area weight portion of the absorbent core. Therefore, the effect of method 23 is more easily achieved.

[0192] [Method 25]

[0193] The absorbent underwear-type article according to any one of methods 1 to 24 is characterized in that...

[0194] The absorbent underwear-type garment is folded at the fold section.

[0195] In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the folded portion.

[0196] Generally speaking, in the folds of underwear-type absorbent articles, the materials constituting the underwear-type absorbent articles may stretch or wrinkle, thus the bonding between the materials tends to decrease.

[0197] In the aforementioned underwear-type absorbent article, the low-weight area of ​​the skin-adhesive bonding agent and the high-weight area of ​​the absorbent core bonding agent overlap in the thickness direction within the fold. Therefore, by overlapping the low-weight area of ​​the skin-adhesive bonding agent and the high-weight area of ​​the absorbent core in the thickness direction within the fold, the skin-adhesive and the opposing sheet are strongly bonded in the low-weight area of ​​the skin-adhesive bonding agent compared to the portion without this area. Because the skin-adhesive and absorbent core are indirectly and strongly bonded as desired, it is difficult to prevent the absorption of bodily fluids. Furthermore, the difficulty in preventing the absorption of bodily fluids results in the wearer experiencing less itching.

[0198] [Method 26]

[0199] The absorbent underwear-type article according to any one of methods 1 to 25 is characterized in that,

[0200] The absorbent body is folded by three folds extending along the width direction, and is divided by these three folds into four regions arranged along the length direction: two end regions at both ends and two central regions between the two end regions.

[0201] In the absorbent body in the unfolded state, either (i) or (ii) below is satisfied:

[0202] (i) The two end regions and the two central regions each have the bonding reducer configuration region, and the bonding reducer in the two end regions has a smaller unit area weight compared to the two central regions;

[0203] (ii) The two central regions each have the bonding reducer configuration region, but each of the two end regions does not have the bonding reducer configuration region.

[0204] Generally speaking, when an absorbent underwear-type garment is divided into four areas—two end areas and two central areas—by three folds extending along its width, the two end areas will come into contact with flat parts of the wearer's body. Therefore, there are problems such as the wearer easily feeling uncomfortable and leakage easily occurring.

[0205] In the aforementioned underwear-type absorbent article, the two end regions contain a small amount of adhesion-reducing agent or none at all. Therefore, in case (i), itching of the wearer can be suppressed, and the adhesion-reducing agent can prevent excessive reduction of the bond between the skin-contact sheet and the opposing sheet, thus preventing separation. Leaked bodily fluids can be absorbed from the skin-contact sheet through the opposing sheet into the absorbent core. Furthermore, in case (ii), the adhesion-reducing agent does not reduce the bond between the skin-contact sheet and the opposing sheet, allowing leaked bodily fluids to be absorbed from the skin-contact sheet through the opposing sheet into the absorbent core.

[0206] The following is a detailed description of the underwear-type absorbent article disclosed herein.

[0207] [First Implementation Method]

[0208] Figures 1-6 This is a diagram illustrating an underwear-type absorbent article (specifically, a panty-type sanitary napkin 1) according to one embodiment of this disclosure (hereinafter referred to as the "first embodiment"). Specifically, Figure 1 This is a 3D image of a panty-style sanitary napkin (model 1). Figure 2 and Figure 3 These are images of the inner and outer surfaces of the shorts-type sanitary napkin 1 in its unfolded state. Figure 4 and Figure 5 These are images of the skin side and non-skin side of the absorbent main body 3 in its unfolded state. Figure 6 yes Figure 2 The diagram shows the end face of the VI-VI type sanitary napkin 1. It should be noted that... Figure 6 In the middle, the compression part 37 is omitted, and all the joints are not shown.

[0209] The panty-type sanitary napkin 1 has a waist opening 101 and a pair of leg openings 103 (one leg opening 103a and the other leg opening 103b), and a pair of locking portions 105 (one locking portion 105a and the other locking portion 105b) extending from the waist opening 101 toward the pair of leg openings 103. The pair of locking portions 105 lock the outer body 5 in the front region 7 and the outer body 5 in the rear region 9, which will be described later. Specifically, they lock the outer body 5 in the abdominal region 15 and the outer body 5 in the dorsal region 19, which will be described later.

[0210] The shorts-type sanitary napkin 1 comprises an absorbent body 3 for absorbing menstrual blood and an outer body 5 having a shorts-like shape. The absorbent body 3 has a rectangular shape, the rectangular shape having a length direction L and a width direction W. The absorbent body 3 and the outer body 5 are fixed to the outer body 5 by a body-to-body bonding portion 131 made of hot melt adhesive.

[0211] The panty-style sanitary napkin 1, when unfolded, has a length direction L and a width direction W originating from the absorbent body 3, and a thickness direction T orthogonal to these length and width directions W. The thickness direction T is divided into an inward direction (not shown) towards the wearer's skin and an outward direction (not shown) towards the non-skin side. It should be noted that the length direction L and the width direction W refer to the length and width directions of the absorbent body 3, respectively, and not to the length and width directions of the panty-style sanitary napkin 1 when unfolded.

[0212] When unfolded, the panty-style sanitary napkin 1 is divided into a front region 7 located at a front end 11 position above the center line LC extending from the center of the length direction L along the width direction W, and a rear region 9 located at a rear end 13 position above the center line LC. It should be noted that the front end 11 and the rear end 13 refer to the edge of the front region 7 and the edge of the rear region 9, respectively, which divide the waist opening 101.

[0213] The panty-type sanitary napkin 1, when unfolded, has three folds arranged at approximately equal intervals along the length direction L and extending along the width direction W from the front end 11 to the rear end 13. That is, it has a first fold F1, a second fold F2, and a third fold F3 sequentially from the front end 11 side. It should be noted that the center line LC in the length direction constitutes the second fold F2.

[0214] Furthermore, when unfolded, the panty-style sanitary napkin 1 is divided into a ventral region 15, a crotch region 17, and a dorsal region 19 by a dividing line (not shown) extending parallel to the width direction W from the front end 11 towards the rear end 13. The ventral region 15 is the area in the front region 7 that is secured by a pair of locking parts 105, the dorsal region 19 is the area in the rear region 9 that is secured by a pair of locking parts 105, and the crotch region 17 is the area between the ventral region 15 and the dorsal region 19.

[0215] The outer casing 5 comprises: a first outer casing 111 extending from a front region 7 to a rear region 9 and disposed on the non-skin side; a ventral second outer casing 113a extending to the front region 7 and disposed on the skin side; and a dorsal second outer casing 113b extending to the rear region 9 and disposed on the skin side. The first outer casing 111, the ventral second outer casing 113a, and the dorsal second outer casing 113b are each made of hydrophobic nonwoven fabric.

[0216] The second outer flap 113a is disposed on the skin side of the first outer flap 111 in the thickness direction T, and in the length direction L, it extends from the front end 11 of the waist opening 101 to the front of the center line LC in the length direction. In addition, the second outer flap 113a is disposed from one locking part 105a to the other locking part 105b in the width direction W.

[0217] The second outer cover 113b on the back side is disposed on the skin side of the first outer cover 111 in the thickness direction T, and in the length direction L it extends from the rear end 13 of the waist opening 101 to the front of the center line LC in the length direction. In addition, the second outer cover 113b on the back side is disposed from one locking part 105a to the other locking part 105b in the width direction W.

[0218] The first outer cover 111 is folded inward at the front end 11 and rear end 13, respectively covering the ventral second outer cover 113a and the dorsal second outer cover 113b. In the unfolded state, the outer cover 5 is divided into a single-piece region 51 consisting of a single piece (i.e., the first outer cover 111) and multiple-piece regions 53 consisting of multiple pieces (i.e., the ventral second outer cover 113a or the dorsal second outer cover 113b and the first outer cover 111).

[0219] A single patch region 51 is positioned from the front region 7 to the rear region 9, spanning the centerline LC in the length direction. Multiple patch regions 53 are respectively positioned in the front region 7 and the rear region 9.

[0220] In the unfolded state, in the multiple sheet regions 53 of the front region 7, a plurality of ventral elastic members 115 are disposed between the first outer sheet 111 and the ventral second outer sheet 113a, extending from a locking portion 105a on one side to a locking portion 105b on the other side and disposed separately in the length direction L. When the plurality of ventral elastic members 115 are extended relative to the first outer sheet 111 and the ventral second outer sheet 113a, they are joined to the first outer sheet 111 and the ventral second outer sheet 113a by an inter-sheet adhesive layer (not shown) made of hot melt adhesive.

[0221] In the unfolded state, in the multiple sheet areas 53 of the rear region 9, a plurality of back-side elastic members 117 are disposed between the first outer sheet 111 and the back-side second outer sheet 113b, extending from one locking portion 105a to the other locking portion 105b or from one leg opening 103a to the other leg opening 103b, and are separately arranged in the longitudinal direction L. Additionally, in the unfolded state, in the multiple sheet areas 53 of the rear region 9, three rear-side leg opening elastic members 119 are provided between the first outer sheet 111 and the back-side second outer sheet 113b. These three rear-side leg opening elastic members 119 extend from one locking portion 105a through one leg opening 103a and the other leg opening 103b to the other locking portion 105b, and are bent in a manner overlapping the absorbent body 3 and protruding toward the longitudinal centerline LC.

[0222] Multiple back elastic members 117 and three rear leg elastic members 119, in an extended state relative to the first outer piece 111 and the second back outer piece 113b, are joined to the first outer piece 111 and the second ventral outer piece 113a by the inner joint portion 133 of the outer piece made of hot melt adhesive.

[0223] The absorbent body 3 comprises, in the thickness direction T, a top sheet 21 having a skin-contact surface 23a and a non-skin-contact surface 23b, a second sheet 25, an absorbent core 27a, a liquid-impermeable sheet 29, an elastic member 31, and a hydrophobic nonwoven fabric sheet 35. The absorbent core 27a and the core-cladding layer 27b covering the absorbent core 27a are configured together as an absorbent body 27. The absorbent core 27a is hourglass-shaped and has a pair of constricted necks 27c in the width direction W.

[0224] The top sheet 21 and the second sheet 25 respectively correspond to a skin-contact sheet having a skin-contact surface and a counter sheet disposed opposite to the skin-contact sheet. The absorbent body 3 has an adhesive placement area 123 in the region overlapping with the second sheet 25 along the thickness direction T. The adhesive placement area 123 is provided with a skin-contact sheet joint portion 121 made of hot-melt adhesive for joining the top sheet 21 and the second sheet 25.

[0225] The absorbent body 3 has a compression section 37 that compresses the top sheet 21, the second sheet 25 and the absorbent body 27 (absorbent core 27a and core cladding 27b), and the compression section 37 has a design that mimics a rabbit.

[0226] The core-cladding layer 27b disposed between the absorbent core 27a and the liquid-impermeable sheet 29 is bonded to the absorbent core 27a by the absorbent core 27a and an adhesive layer (not shown) made of hot-melt adhesive. Furthermore, the core-cladding layer 27b disposed between the absorbent core 27a and the liquid-impermeable sheet 29 is bonded to the liquid-impermeable sheet 29 by a core-cladding layer joint 135 made of hot-melt adhesive.

[0227] The absorbent core 27a has a high portion 39 extending along the length direction L at its center in the width direction W. The high portion 39 is a high-weight portion that is taller than the portion of the absorbent core 27a other than its high portion 39 and has a higher weight per unit area than the average weight per unit area of ​​the absorbent core 27a. This facilitates contact between the high portion 39 of the absorbent core 27a and the wearer's anal opening, buttocks, etc. The core-covering layer 27b is rolled up and folded into three folds inwards to cover the absorbent core 27a via two fold lines extending parallel to the length direction L. At the center of the absorbent core 27a on the skin side in the width direction W, the core-covering layer 27b has multiple overlapping areas 55, where two sheets overlap in the thickness direction T and extend along the length direction L.

[0228] The top sheet 21 is configured to cover the second sheet 25 and the absorbent body 27 (absorbent core 27a and core cladding 27b), and is bonded to the liquid-impermeable sheet 29 by a hot-melt adhesive. The liquid-impermeable sheet 29 is made of a moisture-permeable open-pore membrane. The liquid-impermeable sheet 29, together with the leak-proof wall 43 described later, stands upright to protect the sides of the liquid-impermeable sheet 29. The hydrophobic nonwoven sheet 35 is made of hydrophobic nonwoven fabric.

[0229] The elastic member 31 is composed of five filamentous elastic members, which divide the elastic member arrangement area 33. The five filamentous elastic members are arranged to extend from the front region 7 to the rear region 9 along the length direction L. Specifically, they are arranged to extend from multiple sheet regions 53 of the front region 7 through a single sheet region 51 of the front region 7 and a single sheet region 51 of the rear region 9 along the length direction L to multiple sheet regions 53 of the rear region 9. Furthermore, the five filamentous elastic members constituting the elastic member 31 are separated in the width direction W and arranged at certain intervals. The elastic member 31, with the five filamentous elastic members elongated relative to the liquid-impermeable sheet 29 and the hydrophobic nonwoven fabric sheet 35, is joined to the liquid-impermeable sheet 29 and the hydrophobic nonwoven fabric sheet 35 through a membrane nonwoven fabric insemination portion 137 made of hot-melt adhesive. The elastic member 31 is a member used to facilitate contact between the absorbent body 3, and consequently the absorbent core 27a, and the wearer's excretion opening.

[0230] It should be noted that, in Figure 6The figure shows that the elastic member 31 is disposed on the side of the liquid-impermeable sheet 29 and the membrane nonwoven fabric insemination portion 137 is disposed on the side of the hydrophobic nonwoven fabric sheet 35. However, in reality, the membrane nonwoven fabric insemination portion 137 bonds the elastic member 31 from the side of the liquid-impermeable sheet 29 and the side of the hydrophobic nonwoven fabric sheet 35.

[0231] At both ends of the hydrophobic nonwoven fabric sheet 35 in the width direction W, it is folded inward once and outward once through two fold lines extending parallel to the length direction L, for a total of two folds, forming a leak-proof wall 43. A pair of leak-proof walls 43 are formed at both ends of the hydrophobic nonwoven fabric sheet 35 in the width direction W. Each pair of leak-proof walls 43 has two leak-proof wall elastic members 45 that, in the unfolded state, extend from multiple sheet areas 53 of the front region 7 through a single sheet area 51 of the front region 7 and the rear region 9 along the length direction L to multiple sheet areas 53 of the rear region 9. The two leak-proof wall elastic members 45 are extended relative to the leak-proof wall 43 (hydrophobic nonwoven fabric sheet 35) while being bonded to the leak-proof wall 43 (hydrophobic nonwoven fabric sheet 35) using a hot melt adhesive.

[0232] A pair of leak-proof walls 43 are made of hydrophobic nonwoven fabric forming a hydrophobic nonwoven sheet 35, which is hydrophobic and stands up from the absorbent body 3 when worn to inhibit menstrual blood leakage.

[0233] The absorbent body 3 has an adhesion reducing agent placement area 41 on the non-skin-contact surface 23b of the top sheet 21 in a portion of the adhesive placement area 123. This adhesion reducing agent placement area 41 is provided with an adhesion reducing agent that reduces the adhesion between the top sheet 21 and the second sheet 25 at the skin-contact sheet joint 121 (based on hot-melt adhesive). It should be noted that the adhesion reducing agent placement area 41, in the unfolded state, is located in a portion of the adhesive placement area 123, specifically in the crotch area 17 from the front region 7 to the rear region 9. Therefore, the wearer is less likely to experience itching in the adhesion reducing agent placement area 41 within the crotch area 17, where itching is easily felt. Furthermore, the suppression of bodily fluid leakage further reduces the wearer's sensation of itching caused by bodily fluids.

[0234] The aforementioned binding reducer is composed of an oily agent. This allows bodily fluids to easily slide from the top sheet 21 through the second sheet 25 to the absorbent core 27a, thus suppressing leakage of bodily fluids.

[0235] In the unfolded state, the absorbent body 3 is divided into a central region 63 in the length direction L, a front region 65a in the length direction located near the front end 11 relative to the central region 63, and a rear region 65b in the length direction located near the rear end 13 relative to the central region 63. Furthermore, in the unfolded state, the absorbent body 3 is divided into a central region 67 in the width direction W, and two side regions 69 in the width direction located on either side of the central region 67.

[0236] In the unfolded state, the bonding reducer configuration area 41 is configured in the central region 63 along the length direction and the central region 67 along the width direction of the absorbent body 3. As a result, the wearer is less likely to feel itching around the excretory opening, where itching is easily felt.

[0237] In the unfolded state, the adhesive application area 123 is disposed in the front region 65a, the rear region 65b, and the two side regions 69 in the width direction of the absorbent body 3, while the bonding reducer application area 41 is not disposed in the rear region 65b and the two side regions 69 in the width direction of the absorbent body 3. Therefore, the top sheet 21 and the second sheet 25 are bonded in the rear region 65b and the two side regions 69 in the width direction of the absorbent body 3, and the absorbent body 3 easily maintains its structure in these regions, thus facilitating its function. In the rear region 9 of the panty-type sanitary napkin 1, body pressure is easily applied, especially in the sleeping position, and a gap is easily created between the buttocks crease and the absorbent body 3. Therefore, by maintaining its structure in the rear region 65b and the two side regions 69 in the width direction of the absorbent body 3, its function is easily achieved.

[0238] In the unfolded state, the bonding reducer configuration region 41 is configured in the absorbent body 3 in the front region 7 and the absorbent body 3 in the rear region 9, and the adhesive configuration region 123 is configured in the absorbent body 3 in the front region 7 and the absorbent body 3 in the rear region 9. The area of ​​the bonding reducer configuration region 41 in the absorbent body 3 of the rear region 9 is smaller than the area of ​​the bonding reducer configuration region 41 in the absorbent body 3 of the front region 7, and is also smaller than the area of ​​the adhesive configuration region 123 in the absorbent body 3 of the rear region 9.

[0239] Therefore, in the absorbent body 3 of the front region 7, the wearer is less likely to feel itching around the excretion opening where itching is likely to occur, and in the absorbent body 3 of the rear region 9, the portion of the adhesive configuration region 123 that is not equivalent to the bonding reducer configuration region 41, i.e. the portion where the top sheet 21 and the second sheet 25 are joined, can inhibit the separation of the top sheet 21 and the second sheet 25 and prevent leakage.

[0240] In the unfolded state, the bonding reducer configuration area 41 overlaps with the elastic member configuration area 33 of the elastic member 31 in the thickness direction T. Furthermore, in the unfolded state, the central three of the five filamentous elastic members constituting the elastic member 31 overlap with the bonding reducer configuration area 41 in the thickness direction T. Therefore, when worn, the absorbent body 3 can deform in such a way that the portion containing the elastic member 31 protrudes towards the wearer and comes into close contact with the wearer, thus suppressing leakage. Additionally, since the absorbent body 3 has the bonding reducer configuration area 41 overlapping with the elastic member configuration area 33 in the thickness direction, itching can be suppressed in the area of ​​the absorbent body 3 that is in close contact with the wearer and is prone to itching.

[0241] In the compression section 37, except for the rabbit's ears, a pair of compression sections extending along the length direction L are formed, and the bonding reducing agent placement area 41 is disposed between the pair of compression sections of the absorbent body 3. As a result, the wearer is less likely to feel itching, and bodily fluids can easily slide from the top sheet 21 through the second sheet 25 to the absorbent core 27a, thus suppressing the leakage of bodily fluids.

[0242] The absorbent body 3 has multiple ridges (not shown) protruding towards the skin and extending in the width direction W in the crotch area 17, and the bonding reducer placement area 41 is disposed on these multiple ridges. As a result, the panty-type sanitary napkin 1 can easily follow the wearer's body when worn, and since the bonding reducer placement area 41 is disposed on the multiple ridges, it is possible to suppress itching in the multiple ridges that are prone to cause itching to the wearer.

[0243] In the bonding reducer placement region 41, the top sheet 21, serving as a skin-adhesive sheet, has a low unit area weight region (not shown) of the skin-adhesive sheet bonding reducer, which has a unit area weight of bonding reducer lower than the average unit area weight of the bonding reducer in the top sheet 21. Additionally, in the bonding reducer placement region 41, the absorbent core 27a has a high unit area weight region (not shown) of the absorbent core bonding reducer, which has a unit area weight of bonding reducer higher than the average unit area weight of the bonding reducer in the absorbent core 27a. In the unfolded state, the low unit area weight region of the skin-adhesive sheet bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction T.

[0244] Therefore, when storing the panty-type sanitary napkin 1, especially during transportation, the connection between the top sheet 21 and the second sheet 25 is difficult to detach, and when wearing the panty-type sanitary napkin 1, especially immediately after wearing, the absorbent body 3 can easily perform its function. In addition, when wearing the panty-type sanitary napkin 1, especially under the application of body pressure, the oily agent, which acts as an adhesion reducing agent, can move from the high unit area weight area of ​​the absorbent core adhesion reducing agent, located at a position overlapping the low unit area weight area of ​​the skin-contacting sheet adhesion reducing agent in the thickness direction, to the low unit area weight area of ​​the skin-contacting sheet adhesion reducing agent of the top sheet 21, and cause the bodily fluid reaching the top sheet 21 to slide into the absorbent core 27a.

[0245] In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the high unit area weight portion, i.e., the middle-high portion 39, of the absorbent core 27a in the thickness direction T. Therefore, the bonding between the top sheet 21 and the second sheet 25 is difficult to detach when storing the panty-style sanitary napkin 1, and the absorbent body 3 easily functions when wearing the panty-style sanitary napkin 1, especially immediately after wearing it. Furthermore, when wearing the panty-style sanitary napkin 1, especially under applied body pressure, bodily fluids reaching the top sheet 21 can slide down to the absorbent core 27a.

[0246] In the unfolded state, the low-weight-per-unit-area region of the skin-adhesive bonding reducer and the high-weight-per-unit-area region of the absorbent core bonding reducer overlap in the thickness direction T at the fold (not shown), including the center line LC in the length direction. Thus, in the fold, the top sheet 21 and the second sheet 25 are bonded together, making it difficult to hinder the absorption of bodily fluids. Furthermore, the difficulty in hindering the absorption of bodily fluids results in the wearer experiencing less itching.

[0247] As described above, the panty-type sanitary napkin 1 has three folds extending along the width direction W: a first fold F1, a second fold F2, and a third fold F3. These three folds divide the absorbent body 3 into four regions arranged along the length direction L: two end regions (the region from the front end 11 to the first fold F1 and the region from the third fold F3 to the rear end 13) located at both ends, and two central regions located between them (the region from the first fold F1 through the second fold F2 to the third fold F3).

[0248] The region of the absorbent body 3 from the first fold F1 through the second fold F2 to the third fold F3 has an adhesion reducing agent configuration region 41, but neither the region from the front end 11 to the first fold F1 nor the region from the third fold F3 to the rear end 13 has an adhesion reducing agent configuration region 41. Therefore, in each of the regions from the front end 11 to the first fold F1 and from the third fold F3 to the rear end 13, leaked bodily fluids can be absorbed from the top sheet 21 through the second sheet 25 and by the absorbent core 27a.

[0249] [Second Implementation]

[0250] Figures 7-10 This is a diagram illustrating an underwear-type absorbent article (specifically, a panty-type sanitary napkin 1) according to another embodiment of this disclosure (hereinafter referred to as the "second embodiment"). Specifically, Figure 7 and Figure 8 These are respectively different from the first embodiment. Figure 2 and Figure 3 A corresponding attached diagram. Figure 9 yes Figure 7 End face view at the IX-IX end face. Figure 10 yes Figure 7 End face view at the XX end face.

[0251] The difference between the second embodiment of the panty-type sanitary napkin 1 and the first embodiment is that the bonding reducer placement area 41 is not disposed on the absorbent body 3, but on the outer body 5; otherwise, it is the same as the first embodiment. Therefore, the description of the second embodiment of the panty-type sanitary napkin 1 will focus on the differences from the first embodiment.

[0252] In the outer casing 5 of the shorts-type sanitary napkin 1 in the second embodiment, multiple sheet areas 53 are respectively provided with adhesive placement areas 123 for attaching the skin-contact sheet and the opposing sheet with a hot-melt adhesive. Specifically, as Figure 9As shown, the two sheet regions 53a formed by the second ventral outer sheet 113a corresponding to the skin-contact sheet and the first outer sheet 111 corresponding to the opposing sheet in the multiple sheet regions 53 of the front region 7 are equivalent to the adhesive configuration region 123 where the skin-contact sheet joint 121 is provided. The skin-contact sheet joint 121 is used to join the second ventral outer sheet 113a corresponding to the skin-contact sheet and the first outer sheet 111 corresponding to the opposing sheet in such a way that multiple ventral elastic members 115 are sandwiched between them, and is made of hot melt adhesive.

[0253] In addition, such as Figure 9 As shown, the portion of the first outer sheet 111 folded inward in the multiple sheet regions 53 of the front region 7 corresponds to three sheet regions 53b. These three sheet regions 53b, starting from the skin side, are sequentially composed of the folded-back first outer sheet 111a, the ventral second outer sheet 113a, and the first outer sheet 111. The three sheet regions 53b correspond to an adhesive placement region 123 with a skin-adhesive joint 121. This skin-adhesive joint 121 is used to join the folded-back first outer sheet 111a (corresponding to the skin-adhesive sheet) with the ventral second outer sheet 113a (corresponding to the opposing sheet), and is made of hot-melt adhesive.

[0254] Due to Figure 9 Similarly, the end view is omitted, but the two sheet regions formed by the second outer sheet 113b corresponding to the skin-adhesive sheet and the first outer sheet 111 corresponding to the opposing sheet in the multiple sheet regions 53 of the rear region 9 are equivalent to the adhesive configuration region 123 where the skin-adhesive sheet joint is configured. The skin-adhesive sheet joint is used to join the second outer sheet 113b corresponding to the skin-adhesive sheet and the first outer sheet 111 corresponding to the opposing sheet in such a way that multiple back elastic members 117 are sandwiched between them, and is made of hot melt adhesive.

[0255] Furthermore, the portion of the first outer sheet 111 folded inward in the multiple sheet regions 53 of the rear region 9 corresponds to three sheet regions, which are sequentially composed of the folded-back first outer sheet 111a, the dorsal second outer sheet 113b, and the first outer sheet 111 from the skin side. These three sheet regions correspond to the adhesive placement region 123 where the skin-adhesive joint 121 is provided. The skin-adhesive joint 121 is used to join the folded-back first outer sheet 111, which corresponds to the skin-adhesive sheet, with the dorsal second outer sheet 113b, which corresponds to the opposing sheet, and is made of hot melt adhesive.

[0256] In the second embodiment of the shorts-type sanitary napkin 1, the bonding reducer configuration area 41 is disposed on the outer body 5. Specifically, in the unfolded state, the bonding reducer configuration area 41 is disposed within a predetermined range of a plurality of sheet areas 53, the predetermined range not overlapping with the absorbent body 3, and extending from the front end 11 to the rear end 13 in the length direction L and not reaching a pair of locking portions 105 (one locking portion 105a and the other locking portion 105b) in the width direction W.

[0257] like Figure 10 As shown, in the three-sheet region 53b of the front region 7, the bonding reducer configuration region 41 is disposed between the first outer sheet 111a (equivalent to the skin-adhesive sheet) that is folded back and the second outer sheet 113a (equivalent to the opposing sheet) on the ventral side. Additionally, in the two-sheet region 53a, the bonding reducer configuration region 41 is disposed between the second outer sheet 113a (equivalent to the skin-adhesive sheet) on the ventral side and the first outer sheet 111 (equivalent to the opposing sheet).

[0258] Although not illustrated, similarly in the three-sheet area 53b of the rear region 9, the bonding reducer placement area 41 is disposed between the folded-back first outer sheet 111a, which corresponds to the skin-adhesive sheet, and the dorsal second outer sheet 113b, which corresponds to the opposing sheet. Additionally, in the two-sheet area 53a, the bonding reducer placement area 41 is disposed between the dorsal second outer sheet 113b, which corresponds to the skin-adhesive sheet, and the first outer sheet 111, which corresponds to the opposing sheet.

[0259] In the second embodiment of the panty-type sanitary napkin 1, in the unfolded state, the bonding reducer configuration area 41 is positioned on the outer side of the absorbent body 3 in the length direction L. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area 41, which is on the outer side of the absorbent body 3 in the length direction L.

[0260] Furthermore, in the unfolded state, the bonding reducer placement area 41 is located adjacent to both ends (not labeled) of the absorbent body 3 along its length L. Therefore, the wearer is less likely to experience itching in the portions adjacent to both ends of the absorbent body 3 along its length L.

[0261] In the unfolded state, the bonding reducer placement area 41 is arranged adjacently around the outer edge of the absorbent body 3. As a result, the wearer is less likely to feel itching at the outer edge of the absorbent body 3.

[0262] In the unfolded state, the bonding reducer placement area 41 is disposed between a pair of locking portions 105 (one locking portion 105a and the other locking portion 105b) of the outer body 5. As a result, the wearer is unlikely to feel itching in the bonding reducer placement area 41 between the pair of locking portions 105 (one locking portion 105a and the other locking portion 105b).

[0263] The bonding reducer configuration area 41 is configured on both sides of the three-piece area 53b of the front region 7 and the three-piece area 53b of the rear region 9. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area 41 within the three-piece area 53b where itching is easily felt.

[0264] The bonding reducer placement area 41 is located on the outer body 5 of the front region 7 within a width-direction elastic region (not indicated in the accompanying drawings) containing a ventral elastic member 115 capable of stretching and contracting along the width direction W. Additionally, the bonding reducer placement area 41 is located on the outer body 5 of the rear region 9 within a width-direction elastic region (not indicated in the accompanying drawings) containing a back elastic member 117 and a rear leg circumference elastic member 119 capable of stretching and contracting along the width direction W. Therefore, the wearer is less likely to experience itching in the bonding reducer placement area 41 within the width-direction elastic region where itching is easily felt.

[0265] In the second embodiment of the shorts-type sanitary napkin 1, in the unfolded state, the bonding reducer placement area 41 is not disposed in the area of ​​the outer body 5 that overlaps with the absorbent body 3 in the thickness direction T (not indicated in the drawings). As a result, the bonding between the outer body 5 and the absorbent body 3 is difficult to reduce, and the shorts-type sanitary napkin 1 can easily perform its function.

[0266] The absorbent underwear-type article disclosed herein is not particularly limited to having only an outer body and an absorbent main body with an absorbent core; it may also have structures other than the absorbent main body and the outer body. The aforementioned absorbent underwear-type article generally has a waist opening and a pair of leg openings (one leg opening and the other leg opening). The aforementioned absorbent underwear-type article may have a pair of locking parts (one locking part and the other locking part) that lock the outer body in the front region and the outer body in the rear region. The pair of locking parts may be lockable, or they may be lockable but not closable, such as by welding. It should be noted that, for example, in the absorbent underwear-type article of this disclosure, the waistband may be constructed of a single piece and may not have a pair of locking parts.

[0267] Examples of absorbent underwear-type items include disposable diapers (band-type disposable diapers, underwear-type disposable diapers, etc.) and disposable shorts.

[0268] The aforementioned absorbent body has a length direction and a width direction. When unfolded, the underwear-type absorbent article has a length direction, a width direction, and a thickness direction orthogonal to these length and width directions. It should be noted that the length and width directions used in relation to the underwear-type absorbent article refer to the length and width directions of the absorbent body, not specifically to the length and width directions of the underwear-type absorbent article. Furthermore, in this specification, when simply referred to as the length direction, width direction, and / or thickness direction, they refer to the length direction, width direction, and / or thickness direction as defined for the aforementioned underwear-type absorbent article.

[0269] It should be noted that the aforementioned thickness direction can be divided into inner and outer sides.

[0270] In this instruction manual, "inner side" and "outer side" refer to the direction on the wearer's skin side and the direction on the wearer's non-skin side when viewed from the object, respectively.

[0271] In this specification, the "unfolded state" of the underwear-type absorbent article refers to the following state: The boundaries of the front and rear regions of the underwear-type absorbent article, such as the locking parts of a pair of locking sections, are released as needed, allowing the underwear-type absorbent article to elongate and expand in a plane within a range that will not cause breakage of the material constituting the underwear-type absorbent article (e.g., non-woven fabric). It should be noted that the pair of locking sections can be either closable or non-closable due to welding or other means.

[0272] Additionally, in this instruction manual, the unfolded state of underwear-type absorbent articles is sometimes referred to simply as the "unfolded state".

[0273] The aforementioned absorbent underwear-type garment can be divided into a front region and a rear region when unfolded. The front region is positioned slightly forward of the center line along the length direction, and the rear region is positioned slightly backward of the center line along the length direction. The center line along the length direction is a straight line passing through the center of the absorbent underwear-type garment's length direction and parallel to the width direction. It should be noted that the front and rear ends refer to the edge of the front region and the edge of the rear region, respectively, which divide the waist opening.

[0274] The aforementioned absorbent underwear-type garment can be divided into a ventral region, a crotch region, and a dorsal region by a dividing line extending parallel to the width direction when unfolded. The ventral region refers to the area in the front region that is secured by a pair of locking parts, the dorsal region refers to the area in the rear region that is secured by a pair of locking parts, and the crotch region refers to the area between the ventral region and the dorsal region.

[0275] The aforementioned absorbent underwear-type article comprises: a skin-contacting sheet having a skin-contacting surface; and a counter sheet disposed opposite to the skin-contacting sheet. The skin-contacting sheet and the counter sheet can be disposed in at least one of an absorbent body and an outer casing. Preferably, the counter sheet is disposed adjacent to the skin-contacting sheet.

[0276] The aforementioned underwear-type absorbent article includes an adhesive placement area, which is provided with an adhesive for bonding the skin-contacting sheet and the opposing sheet. As the adhesive, any adhesive used in this art can be employed without limitation, such as a hot-melt adhesive.

[0277] The adhesive can be applied to any area of ​​the absorbent underwear that has the skin-contacting piece and the opposing piece, and is not particularly limited to any location on the outer body and / or the absorbent body.

[0278] In the aforementioned adhesive placement area, the adhesive can be continuously disposed along both the length and width directions. For example, in the aforementioned adhesive placement area, the adhesive may be continuously disposed on the skin-adhesive patch and the opposing patch, and the adhesive may continuously bond the skin-adhesive patch and the opposing patch together.

[0279] In the aforementioned adhesive configuration area, the adhesive can be configured intermittently along either the length direction or the width direction. For example, multiple adhesives extending in a linear shape can be configured separately in orthogonal directions in either the length or width direction. Examples of such linear shapes include straight lines and non-linear shapes (e.g., spiral, Ω-shaped, etc.).

[0280] In the aforementioned adhesive configuration area, the adhesive can be configured intermittently along the length and width directions, for example, it can be configured in a dotted manner extending along the length and width directions.

[0281] The area in the adhesive formulation region that does not include the bonding reducer formulation region can function as an "adhesive region" for bonding the skin contact patch and the opposing patch with the adhesive.

[0282] The aforementioned absorbent underwear-type garment has an adhesion-reducing agent configuration area in the adhesive configuration area, wherein the adhesion-reducing agent is configured to reduce adhesion based on the adhesive. The aforementioned absorbent underwear-type garment may also have an adhesion-reducing agent configuration area with the adhesion-reducing agent configured in the entire adhesive configuration area, but it is preferable that the aforementioned adhesion-reducing agent configuration area is located in a portion of the adhesive configuration area. Thus, the area in the adhesive configuration area that does not contain the adhesion-reducing agent configuration area can function as an "adhesive area" for the adhesive to bond the skin-adhesive sheet and the opposing sheet. As a result, the aforementioned absorbent underwear-type garment functions easily, and the wearer is less likely to experience itching in the adhesion-reducing agent configuration area.

[0283] The aforementioned bonding reducer configuration area can be configured on the skin-contact surface, interior or non-skin-contact surface of the skin-contact sheet, or the skin-side surface, interior or non-skin-side surface of the opposing sheet. From the viewpoint of reducing adhesive-based bonding, the aforementioned bonding reducer configuration area is preferably configured on the interior or non-skin-contact surface of the skin-contact sheet, or on the skin-side surface or interior of the opposing sheet, and more preferably on the non-skin-contact surface of the skin-contact sheet or the skin-side surface of the opposing sheet.

[0284] In the aforementioned region for the bonding reducing agent formulation, from the viewpoint of the effect of the bonding reducing agent, the bonding reducing agent is preferably present at a concentration of 0.01 g / m. 2 Of the above-mentioned weight-to-unit-area configuration, 0.1 g / m² is preferred. 2 The above-mentioned weight-per-unit area configuration is further preferably 0.5 g / m². 2 The above describes the weight distribution per unit area. Furthermore, in the aforementioned area where the bonding reducer is applied, from the viewpoint of the bonding reducer's function, the bonding reducer is preferably applied at a concentration of 20 g / m². 2 The following unit area weight configuration is more preferably 10g / m² 2 The following is the weight configuration per unit area, and it is further preferred to be 5g / m². 2 The following is the weight configuration per unit area.

[0285] In the underwear-type absorbent article disclosed herein, the outer body may have a single sheet area composed of a single piece, or it may have multiple sheet areas composed of multiple pieces.

[0286] The aforementioned bonding reducer configuration area can be configured at any position within the aforementioned plurality of sheet areas in the aforementioned outer casing.

[0287] Each of the skin-contacting sheet and the opposing sheet constituting the aforementioned outer body can be, for example, fabric, non-woven fabric (e.g., non-stretchable non-woven fabric, stretchable non-woven fabric), textile, woven fabric, or membrane, such as an impermeable membrane or a permeable membrane.

[0288] The aforementioned outer garment can include an elastic member for conforming the underwear-type absorbent article of this disclosure to the wearer. As such an elastic member, the outer garment can, for example, have a ventral elastic member extending from one locking portion to the other in the aforementioned front region. The ventral elastic member can be a plurality of linear elastic members arranged separately in the longitudinal direction, or it can be a planar elastic member.

[0289] As the aforementioned elastic member, the outer casing may, for example, have a rear-side elastic member extending in the width direction in the rear region (e.g., from one locking portion to the other locking portion, and / or from one leg opening to the other leg opening). The aforementioned rear-side elastic member may be a plurality of linear elastic members separately arranged in the length direction, or it may be a planar elastic member.

[0290] Furthermore, as the aforementioned elastic member, the outer body may, for example, have a rear leg opening elastic member extending in the width direction (e.g., from one locking portion along one leg opening, the absorbent body, and the other leg opening to the other locking portion) in the rear region. The rear leg opening elastic member may also bend in a manner that protrudes towards the centerline in the length direction. Additionally, the rear leg opening elastic member may partially or completely break in the area overlapping with the absorbent core when the underwear-type absorbent article is in its unfolded state. The rear leg opening elastic member may be a plurality of linear elastic members arranged separately in the length direction, or it may be a planar elastic member.

[0291] In the aforementioned adhesive application area, the adhesive can also be disposed between the skin-adhesive sheet and the opposing sheet, sandwiching the elastic member. When the elastic member is a linear elastic member, the linear elastic member can be bonded to the skin-adhesive sheet and the opposing sheet via the adhesive. Alternatively, although the linear elastic member itself may not be bonded to the skin-adhesive sheet and the opposing sheet via adhesive, the skin-adhesive sheet and the opposing sheet may be bonded around the linear elastic member via adhesive.

[0292] In the unfolded state, the aforementioned bonding reducer configuration area can be positioned on the outer side of the outer casing in the longitudinal direction, or on the inner side in the longitudinal direction, and preferably on at least the outer side in the longitudinal direction. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area on the outer side in the longitudinal direction compared to the absorbent body.

[0293] In the unfolded state, the aforementioned bonding reducer configuration area is preferably located in the outer casing adjacent to at least one of the two ends of the absorbent main body along its length direction, and more preferably in the portions adjacent to both ends of the absorbent main body along its length direction. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area adjacent to at least one of the two ends of the absorbent main body along its length direction.

[0294] In the unfolded state, the aforementioned bonding reducer configuration area can be disposed in at least a portion of the outer edge of the outer casing adjacent to the outer edge of the absorbent main body. For example, the bonding reducer configuration area can be disposed in the portion of the outer edge of the absorbent main body adjacent to the outer edge in the width direction, the portion adjacent to the outer edge in the length direction, etc. As a result, the wearer is unlikely to feel itching in the bonding reducer configuration area in the portion adjacent to at least a portion of the outer edge of the absorbent main body.

[0295] The aforementioned bonding reducer placement area can be positioned between the pair of locking parts in the outer casing in the unfolded state, or it can be positioned outside the pair of locking parts in the outer casing, but it is preferable that it is positioned between the pair of locking parts in the outer casing. Therefore, the wearer is less likely to experience itching in the bonding reducer placement area around the waist. It should be noted that the aforementioned bonding reducer placement area can be positioned on or off the pair of locking parts themselves, but it is preferable that it is not positioned on the pair of locking parts themselves. This is from the viewpoint of the strength of the pair of locking parts.

[0296] When the aforementioned outer garment, in its unfolded state, has a region consisting of three or more sheets in the thickness direction, the aforementioned bonding reducer placement region can be disposed within this region. Therefore, the wearer is less likely to experience itching in the bonding reducer placement region within the three or more sheet regions where itching is likely to occur.

[0297] The aforementioned outer casing can have a width-direction elastic region in its unfolded state, and this width-direction elastic region has an elastic member capable of stretching and contracting along the width direction. In this case, the aforementioned bonding reducer placement region can also be disposed within the aforementioned width-direction elastic region. Therefore, the wearer is less likely to experience itching in the bonding reducer placement region within the width-direction elastic region, where itching is easily felt.

[0298] The aforementioned outer casing, in its unfolded state, possesses a width-direction elastic region and a width-direction inelastic region. The width-direction elastic region includes an elastic member capable of stretching and contracting along the width direction. The width-direction inelastic region is positioned closer to the length-direction centerline than the width-direction elastic region and does not possess an elastic member capable of stretching and contracting along the width direction. In this case, the aforementioned bonding reducer placement area can also be located within the width-direction inelastic region. Consequently, the wearer is less likely to experience itching in the bonding reducer placement area within the width-direction inelastic region, where itching is more likely to occur.

[0299] In the aforementioned outer casing, in the unfolded state, the bonding reducer area is preferably located in a region that does not overlap with the absorbent body in the thickness direction. Therefore, the bonding between the outer casing and the absorbent body is difficult to reduce, and the underwear-type absorbent article can easily perform its function.

[0300] The aforementioned absorbent body comprises an absorbent core, and generally includes an absorbent core, a liquid-permeable sheet (hereinafter referred to as a "top sheet") disposed on the skin side of the absorbent core and having a skin-contact surface, and a liquid-impermeable sheet disposed on the non-skin side of the absorbent core. Ideally, the absorbent body may also include a liquid diffusion sheet (hereinafter referred to as a "second sheet") disposed between the top sheet and the absorbent core, a liquid diffusion sheet (hereinafter referred to as a "third sheet") disposed between the absorbent core and the liquid-impermeable sheet, and a sheet (e.g., a non-woven sheet, such as a hydrophobic non-woven sheet) disposed on the non-skin side of the liquid-impermeable sheet. The absorbent core may or may not have a pair of necks that are constricted in the width direction. The absorbent core may also be disposed in the absorbent body as an absorbent element together with a core covering the absorbent core.

[0301] When the adhesive preparation area and / or bonding reducer preparation area are disposed in the absorbent body, the top sheet can be equivalent to a skin-adhesive sheet, and the second sheet, the core-cladding layer disposed on the skin side of the absorbent core, etc., can be equivalent to an opposing sheet.

[0302] In the unfolded state, the aforementioned adhesive reducing agent configuration area can be configured in the absorbent body of the ventral region, crotch region, and / or dorsal region. Additionally, in the unfolded state, the aforementioned adhesive configuration area can be configured in the absorbent body of the ventral region, crotch region, and / or dorsal region.

[0303] In the unfolded state, the aforementioned bonding reducer configuration area is preferably located in the absorbent body of the crotch area. Therefore, the wearer is less likely to experience itching in the bonding reducer configuration area within the crotch area, where itching is common.

[0304] In its unfolded state, the absorbent body can be divided into a central region along its length, a front region along its length, and a rear region along its length. The central region is located at the center of the body along its length, the front region is located at the front end of the central region along its length, and the rear region is located at the rear end of the central region along its length. Furthermore, in its unfolded state, the absorbent body can be divided into a central region along its width and two side regions along its width. The central region is located at the center of the body along its width, and the two side regions are located on either side of the central region. In this case, in the unfolded state, the bonding reducer region can be located in both the central region along its length and the central region along its width. Therefore, the wearer is less likely to experience itching around the excretory opening, where itching is commonly felt.

[0305] It should be noted that the aforementioned central region in the length direction refers to the region at the center of the length direction of the absorbent body, preferably 60%, more preferably 50%, and even more preferably 40%. Furthermore, the front region in the length direction refers to the region of the absorbent body that is further forward than the aforementioned central region in the length direction, and the rear region in the length direction refers to the region of the absorbent body that is further backward than the aforementioned central region in the length direction.

[0306] Furthermore, the aforementioned central region in the width direction refers to the region that is preferably 60%, more preferably 50%, and even more preferably 40% of the center in the width direction of the absorbent body, and the two side regions in the width direction refer to the regions after removing the aforementioned central region in the width direction from the absorbent body.

[0307] Preferably, in the unfolded state, the adhesive application areas are located in the front region, rear region, and both sides in the width direction of the absorbent body, while the bonding reducer application areas are not located in the rear region and both sides in the width direction of the absorbent body. Therefore, the absorbent body easily maintains its structure in the rear region and both sides in the width direction, thus facilitating its function.

[0308] In the unfolded state, the aforementioned bonding reducer configuration area can be disposed on the aforementioned absorbent body in the aforementioned front region and / or the aforementioned rear region. Additionally, the aforementioned adhesive configuration area can be disposed on the aforementioned absorbent body in the aforementioned front region and / or the aforementioned rear region.

[0309] In the unfolded state, the bonding reducer configuration region can be disposed in the absorbent body in both the front and rear regions, and the adhesive configuration region can be disposed in both the front and rear regions. In this case, the area of ​​the bonding reducer configuration region in the absorbent body in the rear region can be smaller than the area of ​​the bonding reducer configuration region in the absorbent body in the front region, and also smaller than the area of ​​the adhesive configuration region in the absorbent body in the rear region.

[0310] Therefore, in the aforementioned absorbent body in the front region, the wearer is less likely to feel itching around the excretory opening, where itching is common. Furthermore, in the aforementioned absorbent body in the rear region, the portion of the adhesive application area that is not equivalent to the bonding reducer application area—that is, the "adhesive area" where the adhesive bonds the skin-contact sheet and the opposing sheet—can inhibit separation of the skin-contact sheet and the opposing sheet and prevent leakage.

[0311] The underwear-type absorbent article disclosed herein can have an elastic member disposed on the non-skin side of the absorbent core and arranged along its length from the front region to the rear region. The area defined by the elastic member is referred to as the elastic member placement area. The elastic member can be composed of one or more linear elastic members (e.g., filamentous elastic members) or planar elastic members (e.g., stretchable nonwoven fabric).

[0312] When the aforementioned elastic member is composed of multiple linear elastic members, the lengths of the multiple linear elastic members in the longitudinal direction can be the same or different. In addition, the multiple linear elastic members can be arranged at the same spacing in the width direction, or they can be arranged at different spacings in the width direction.

[0313] The position of the aforementioned elastic member in the thickness direction is not particularly limited as long as it is disposed on the non-skin side of the absorbent core. Examples include the absorbent core and the core cladding, the core cladding and the liquid-impermeable sheet, the liquid-impermeable sheet and the sheet (e.g., non-woven sheet, hydrophobic non-woven sheet) disposed on its non-skin side that constitutes the absorbent body, the absorbent body and the outer sheet, and the two sheets (e.g., non-woven sheet, hydrophobic non-woven sheet) that constitute the outer sheet.

[0314] From the viewpoint of facilitating contact between the absorbent core and the wearer's excretory opening, the elastic member is preferably joined to the adjacent sheet in the thickness direction with an elongation ratio of 1.1 times or more, more preferably 1.5 times or more, and even more preferably 2.0 times or more, relative to the adjacent sheet in the thickness direction. Furthermore, from the above viewpoint, the elastic member is preferably joined to the adjacent sheet in the thickness direction with an elongation ratio of 3.5 times or less, more preferably 3.2 times or less, and even more preferably 3.0 times or less, relative to the adjacent sheet in the thickness direction.

[0315] In the case of the underwear-type absorbent article of this disclosure having the aforementioned elastic member configuration area, it is preferable that, in the unfolded state, the aforementioned bonding reducer configuration area and the aforementioned elastic member configuration area overlap in the thickness direction. Therefore, when worn, the absorbent body can deform in such a way that the portion containing the elastic member protrudes towards the wearer and comes into close contact with the wearer, suppressing leakage, and suppressing itching in the area of ​​the absorbent body that is in close contact with the wearer and is prone to itching. Furthermore, when the bonding reducer is an oily agent, the elastic member easily brings the absorbent body, and consequently the absorbent core, into contact with the wearer's excretory opening, making it easier for bodily fluids to slip from the skin-adhesive sheet into the absorbent core, and reducing the likelihood of bodily fluid leakage.

[0316] When the bonding reducer is an oily agent, from the viewpoint of enabling the bonding reducer (oily agent) to act rapidly relative to the bodily fluids reaching the absorbent body, the bonding reducer placement area is preferably located on the skin-contact surface, interior, or non-skin-contact surface of the skin-contact sheet, more preferably on the skin-contact surface or interior, and even more preferably on the skin-contact surface. From the viewpoint of suppressing contamination of the bonding reducer on the production line of underwear-type absorbent articles, and contamination of other underwear-type absorbent articles by the bonding reducer, the bonding reducer placement area is preferably located on the interior or non-skin-contact surface of the skin-contact sheet (e.g., the top sheet), or on the opposing sheet (e.g., the second sheet, the core layer, etc.), and more preferably on the non-skin-contact surface of the skin-contact sheet (e.g., the top sheet), or on the opposing sheet (e.g., the second sheet, the core layer, etc.).

[0317] When the underwear-type absorbent article of this disclosure has the aforementioned elastic member configuration area, in the unfolded state, the absorbent body can have a compression portion in the region overlapping the bonding reducer configuration area and the elastic member configuration area in the thickness direction, and the compression portion compresses the absorbent core. Alternatively, the compression portion may compress any component constituting the absorbent body in addition to compressing the absorbent core.

[0318] The compression portion described above is preferably a compression portion that compresses from the non-skin side. Furthermore, the compression portion preferably extends along the length direction from the center in the width direction, and more preferably is disposed in the central region of the width direction. This is because, when wearing underwear-type absorbent articles, the center of the absorbent body in the width direction can be deformed in a way that bulges towards the wearer.

[0319] In the portion where the absorbent core protrudes due to the compression section, the wearer is less likely to feel itching caused by friction against the skin. Furthermore, when the bonding reducer is an oily agent, the protruding portion of the absorbent core easily comes into contact with the wearer's skin, allowing bodily fluids to easily slide from the skin-contacting piece through the opposing piece into the absorbent core. This inhibits fluid leakage, and as a result of suppressing fluid leakage, the wearer is less likely to feel itching caused by bodily fluids.

[0320] When the absorbent underwear of this disclosure has the aforementioned elastic member configuration area, in the unfolded state, the absorbent core preferably has a low unit area weight region in the region overlapping with the bonding reducer configuration area and the elastic member configuration area in the thickness direction. This low unit area weight region has a unit area weight less than the average unit area weight of the absorbent core. The low unit area weight region preferably extends along the length direction from the center in the width direction, and more preferably is located in the central region in the width direction.

[0321] Therefore, at the protruding part of the absorbent core, the wearer is unlikely to feel itching caused by friction against the skin. Furthermore, when the aforementioned binding-reducing agent is an oil-based agent, since the protruding part of the absorbent core easily comes into contact with the wearer's skin, bodily fluids can easily slide from the skin-contacting piece through the opposing piece into the absorbent core, thus inhibiting leakage. As a result of inhibiting leakage, the wearer is unlikely to feel itching caused by bodily fluids. It should be noted that the aforementioned low weight-per-unit area can also be a void, i.e., a weight-per-unit area of ​​0 g / m². 2 .

[0322] In the underwear-type absorbent article disclosed herein, the absorbent body can have a pair of compression portions that compress the skin-contact sheet, the opposing sheet, and the absorbent core, and extend along the length direction. In this case, the bonding reducer placement area is preferably disposed between the pair of compression portions of the absorbent body. As a result, the wearer is less likely to feel itching caused by friction with the skin-contact sheet. In addition, when the bonding reducer is an oily agent, bodily fluids can easily slide from the skin-contact sheet through the opposing sheet into the absorbent core, which can suppress the leakage of bodily fluids. Furthermore, as a result of suppressing the leakage of bodily fluids, the wearer is less likely to feel itching caused by bodily fluids.

[0323] In the absorbent underwear-type article disclosed herein, in its unfolded state, the absorbent body can have multiple ridges that protrude towards the skin and extend in the width direction. In this case, the adhesion-reducing agent placement area is preferably disposed on the multiple ridges. Therefore, it easily follows the wearer's body during wear and can suppress itching in the multiple ridges that are likely to cause itching.

[0324] The aforementioned multiple ridges can be formed, for example, by forming an elastic member extending along the length direction in the underwear-type absorbent article, or by providing the aforementioned elastic member configuration area. Furthermore, even without providing the aforementioned elastic member configuration area, the aforementioned multiple ridges can also be formed by changing the length in the length direction and the contractility in the length direction at different positions in the width direction of the underwear-type absorbent article.

[0325] In the underwear-type absorbent article of this disclosure, when the aforementioned bonding reducer configuration area is located in the central region along the length direction and the central region along the width direction of the absorbent body, it is preferable that, in the aforementioned bonding reducer configuration area, the skin-contact sheet has a low unit area weight region for the skin-contact sheet bonding reducer, wherein the low unit area weight region for the skin-contact sheet bonding reducer has a unit area weight of bonding reducer that is lower than the average unit area weight of bonding reducer in the skin-contact sheet. Furthermore, in the aforementioned bonding reducer configuration area, it is preferable that the absorbent core has a high unit area weight region for the absorbent core bonding reducer, wherein the high unit area weight region for the absorbent core bonding reducer has a unit area weight of bonding reducer that is higher than the average unit area weight of bonding reducer in the absorbent core. Moreover, in the unfolded state, the low unit area weight region for the skin-contact sheet bonding reducer and the high unit area weight region for the absorbent core bonding reducer preferably overlap in the thickness direction.

[0326] Therefore, when storing absorbent underwear, especially during transportation, the adhesive-based bond between the skin-contact sheet and the opposing sheet is difficult to detach, and the absorbent body easily functions when wearing the absorbent underwear, especially immediately after wearing it. Furthermore, when the aforementioned bonding reducer is an oil-based agent, when wearing the absorbent underwear, especially under applied body pressure, the oil-based agent can move from the high-weight-per-unit-area region of the absorbent core bonding reducer, located where it overlaps with the low-weight-per-unit-area region of the skin-contact sheet bonding reducer in the thickness direction, to the low-weight-per-unit-area region of the skin-contact sheet bonding reducer, causing bodily fluids reaching the skin-contact sheet to slide into the absorbent core.

[0327] The structure in which the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction can be formed, for example, by folding an underwear-type absorbent article once or multiple times.

[0328] The aforementioned absorbent body can have a high unit area weight portion within the absorbent core, wherein the high unit area weight portion has a unit area weight higher than the average unit area weight of the absorbent core. In this case, it is preferable that, in the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the high unit area weight portion of the absorbent core. Therefore, when storing the underwear-type absorbent article, the skin-adhesive sheet and the opposing sheet are less likely to detach, and the absorbent body can easily function when wearing the underwear-type absorbent article. Furthermore, when the bonding reducer is an oil-based agent, when wearing the underwear-type absorbent article, the oil-based agent, acting as a bonding reducer, can move from the high unit area weight region of the absorbent core bonding reducer, located at a position overlapping the low unit area weight region of the skin-adhesive bonding reducer in the thickness direction, to the low unit area weight region of the skin-adhesive sheet bonding reducer, and cause bodily fluids reaching the skin-adhesive sheet to slide into the absorbent core.

[0329] The disclosed underwear-type absorbent article can be either left unfolded or folded at one or more folds. When folded at one or more folds, it is preferable that, in the unfolded state, the low-weight-per-unit-area region of the skin-adhesive bonding reducer and the high-weight-per-unit-area region of the absorbent core bonding reducer overlap in the thickness direction at at least a portion of the one or more folds. This makes it difficult to prevent the absorption of bodily fluids. Furthermore, the difficulty in preventing the absorption of bodily fluids results in the wearer experiencing less itching.

[0330] In the underwear-type absorbent article of this disclosure, the absorbent body can be folded by three folds extending in the width direction, and can be divided by these three folds into four regions arranged in the length direction, namely two end regions disposed at both ends and two central regions between the two end regions. In this case, in the above-mentioned absorbent body in the unfolded state, it is preferable to satisfy (i) or (ii) below.

[0331] (i) The two end regions and the two central regions each have the aforementioned bonding reducer configuration region, and compared with the two central regions, the bonding reducer in the two end regions has a smaller unit area weight.

[0332] (ii) The two central regions each have the aforementioned bonding reducer configuration area, but neither of the two end regions has the aforementioned bonding reducer configuration area.

[0333] In case (i), itching of the wearer can be suppressed, and the bonding reducer can prevent the skin-contact sheet and the opposing sheet from being excessively reduced in adhesion, thus preventing their separation. Leaked bodily fluids can be transferred from the skin-contact sheet to the absorbent core via the opposing sheet. In case (ii), the bonding reducer does not reduce the adhesion between the skin-contact sheet and the opposing sheet, and leaked bodily fluids can be transferred from the skin-contact sheet to the absorbent core via the opposing sheet.

[0334] The aforementioned absorbent underwear-type garments preferably do not contain volatile cooling agents. This prevents itching caused by volatile cooling agents irritating the wearer's skin.

[0335] The vapor pressure of the aforementioned volatile cooling agent is preferably 0.1 Pa or more at 20°C, more preferably 1.0 Pa or more, even more preferably 10 Pa or more, and even more preferably 100 Pa or more.

[0336] In this disclosure, the aforementioned bonding reducer is not particularly limited as long as it can reduce the bonding between the skin-adhesive sheet and the opposing sheet based on the adhesive; examples include silicone oil, oily agents, etc.

[0337] Examples of silicone oils mentioned above include linear silicone oils (Japanese: ストレートシリコーンオイル) and modified silicone oils.

[0338] Examples of linear silicone oils mentioned above include dimethyl silicone oil (e.g., trisiloxane, polydimethylsiloxane, etc.), methylphenyl silicone oil (e.g., diphenylpolydimethylsiloxane, diphenylsiloxyphenylpolytrimethylsiloxane, etc.), and methylhydrosiloxane.

[0339] Examples of modified silicone oils include amino-modified silicone oils, diamino-modified silicone oils (such as polydimethylsiloxane, amide-ethylaminopropyl polydimethylsiloxane, aminopropyl polydimethylsiloxane, etc.), and polyether-modified silicone oils (such as PEG-11 methyl ether polydimethylsiloxane, PEG / PPG-20 / 22 butyl ether polydimethylsiloxane, PEG-9 polydimethylsiloxane, PEG-3 polydimethylsiloxane, PEG-9 methyl ether polydimethylsiloxane, PEG-10 polydimethylsiloxane, PEG-32 methyl ether polydimethylsiloxane, PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, cetyl PEG / PPG-10 / 1 polydimethylsiloxane, etc.).

[0340] From the viewpoint of softness in underwear-type absorbent articles, amino-modified silicone oil and diamino-modified silicone oil are preferred as the aforementioned silicone oils, while from the viewpoint of cost, dimethyl silicone oil is preferred.

[0341] In this disclosure, the aforementioned oily agent has the same function as the blood lubricant described in Patent Document 2, and has the function of not only causing menstrual blood but also body fluids to slide from the skin-adhesive sheet to the absorbent core.

[0342] The above-mentioned oily agent preferably has a thickness of 0.01 to 80 mm at 40°C. 2 / s, more preferably 1 to 70 mm 2 / s, further preferably 3-60mm 2 / s, more preferably 5-50mm 2 The kinematic viscosity is 7-45 mm / s, and more preferably 7-45 mm / s. 2 kinematic viscosity / s.

[0343] In addition, the oil-based agent is designed to achieve a thickness of 0.01–80 mm at 40°C. 2 The kinematic viscosity is / s, and the melting point of the oily agent is preferably below 45°C. This is because if the oily agent contains crystals at 40°C, its kinematic viscosity tends to increase.

[0344] It should be noted that in this specification, the kinematic viscosity at 40°C is sometimes referred to simply as "kinematic viscosity".

[0345] If the above kinematic viscosity exceeds 80 mm 2 If the viscosity of the oil-based agent is high, it tends to be difficult for the oil-based agent to slide off the skin along with bodily fluids such as menstrual blood and into the absorption core.

[0346] The kinematic viscosity described above can be measured using a Cannon-Fenske countercurrent viscometer at a test temperature of 40°C, according to "5. Test method for kinematic viscosity" in JIS K 2283:2000.

[0347] The aforementioned oily agent preferably has a water retention rate of 0.01 to 4.0% by mass, more preferably 0.02 to 3.5% by mass, even more preferably 0.03 to 3.0% by mass, even more preferably 0.04 to 2.5% by mass, and still more preferably 0.05 to 2.0% by mass.

[0348] In this specification, "water retention rate" refers to the percentage of water that a substance can retain, which can be determined as follows.

[0349] (1) In a constant temperature room at 40℃, the test tube, rubber stopper, substance to be tested and deionized water were left to stand for 24 hours.

[0350] (2) In the above constant temperature room, add 5.0g of the substance to be tested and 5.0g of deionized water to a 20mL test tube.

[0351] (3) In the above constant temperature room, plug the mouth of the test tube with a rubber stopper, rotate it once, and let it stand for 5 minutes.

[0352] (4) In the above constant temperature room, 3.0g of the layer (usually the upper layer) of the substance to be tested is collected into a glass petri dish (mass: W0) with a diameter of 90mm.

[0353] (5) Heat the above petri dishes in an oven at 105°C for 3 hours to evaporate the moisture, and measure the mass (mass: W1) together with the petri dishes.

[0354] (6) Calculate the water retention rate according to the following formula.

[0355] Water retention rate (mass%) = 100 × (W0 - W1) / 3.0

[0356] The measurement was performed three times, and the average value was used.

[0357] The aforementioned oily agent preferably has a weight-average molecular weight of less than 1000, and more preferably a weight-average molecular weight of less than 900. This is because if the weight-average molecular weight is 1000 or higher, the oily agent itself will become sticky, which may cause discomfort to the wearer.

[0358] The aforementioned oily agent preferably has a weight-average molecular weight of 100 or more, and more preferably a weight-average molecular weight of 200 or more. This is because if the weight-average molecular weight decreases, the vapor pressure of the oily agent increases, and it may sometimes vaporize during storage, resulting in problems such as reduced quantity and odor when worn.

[0359] It should be noted that, in this specification, "weight-average molecular weight" is a concept encompassing both polydisperse compounds (e.g., compounds manufactured by stepwise polymerization, esters formed from multiple fatty acids and multiple aliphatic monohydric alcohols) and single compounds (e.g., esters formed from one fatty acid and one aliphatic monohydric alcohol), in the context of N... i Molecular weight M i In a system composed of molecules (i = 1, or i = 1, 2...), it refers to the system defined by the following formula:

[0360] M w =ΣN i M i 2 / ΣN i M i

[0361] The calculated M w .

[0362] In this specification, weight-average molecular weight refers to the value of polystyrene obtained by gel permeation chromatography (GPC).

[0363] The following conditions can be listed as examples of the conditions for GPC determination.

[0364] Model: (Hitachi High Technology Co., Ltd.) High Performance Liquid Chromatograph Lachrom Elite

[0365] Chromatographic columns: SHODEX KF-801, KF-803, and KF-804 manufactured by Showa Denko Co., Ltd.

[0366] Elution buffer: THF

[0367] Flow rate: 1.0 mL / min

[0368] Injection volume: 100μL

[0369] Detection: RI (Differential Refractometer).

[0370] Examples of components of the aforementioned oily agents include (a1) esters of a chain tetraol and at least one fatty acid, (a2) esters of a chain triol and at least one fatty acid, (a3) ​​esters of a chain diol and at least one fatty acid, (b1) ethers of a chain tetraol and at least one aliphatic monohydric alcohol, (b2) ethers of a chain triol and at least one aliphatic monohydric alcohol, (b3) ethers of a chain diol and at least one aliphatic monohydric alcohol, (c1) esters of a chain tetracarboxylic acid, hydroxy acid, alkoxy acid, or oxyacid having four carboxyl groups and at least one aliphatic monohydric alcohol, and (c2) esters of a chain tricarboxylic acid, hydroxy acid, alkoxy acid, or oxyacid having three carboxyl groups. Esters of acids, alkoxy acids or oxyacids with at least one aliphatic monohydric alcohol, (c3) chain hydrocarbons having two carboxyl groups, dicarboxylic acids, hydroxy acids, alkoxy acids or oxyacids with at least one aliphatic monohydric alcohol, (d1) aliphatic monohydric alcohols with ethers of aliphatic monohydric alcohols, (d2) dialkyl ketones, (d3) fatty acids with esters of aliphatic monohydric alcohols, (d4) dialkyl carbonate esters, (e1) polyoxy C3-C6 alkylene glycols, (e2) polyoxy C3-C6 alkylene glycols with at least one fatty acid, (e3) polyoxy C3-C6 alkylene glycols with ethers of at least one aliphatic monohydric alcohol, and (f1) chain alkanes.

[0371] [(a1) Ester of a chain-like hydrocarbon tetraol with at least one fatty acid]

[0372] As an ester of (a1) a chain-like hydrocarbon tetraol and at least one fatty acid, examples include tetraesters of pentaerythritol and fatty acids, triesters of pentaerythritol and fatty acids, diesters of pentaerythritol and fatty acids, and monoesters of pentaerythritol and fatty acids.

[0373] Examples of the fatty acids mentioned above include saturated fatty acids, such as C2-C4 fatty acids. 30 Saturated fatty acids, such as acetic acid (C2) (C2 represents the number of carbon atoms, the same below), propionic acid (C3), butyric acid (C4) and their isomers, such as 2-methylpropionic acid (C4), valeric acid (C5) and its isomers, such as 2-methylbutyric acid (C5), 2,2-dimethylpropionic acid (C5), hexanoic acid (C6), heptanoic acid (C7), octanoic acid (C8) and its isomers, such as 2-ethylhexanoic acid (C8), nonanoic acid (C9), decanoic acid (C9), etc. 10 ), dodecanoic acid (C 12 ), tetradecanoic acid (C 14 ), hexadecanoic acid (C 16 ), heptadecanoic acid (C 17 ), octadecanoic acid (C 18 ), eicosanoic acid (C 20 ), cocoacid (C 22 ), coesanoic acid (C 24 ), hexacosanoic acid (C 26 ), octacosanoic acid (C 28 ), triacono-2-carboxylic acid (C 30 (and their isomers not listed)

[0374] The fatty acids mentioned above can also be unsaturated fatty acids. Examples of unsaturated fatty acids include C3 to C4. 20 Unsaturated fatty acids, such as monounsaturated fatty acids, such as crotonic acid (C4) and myristone acid (C4). 14 ), palmitoleic acid (C 16 ), oleic acid (C 18 ), oleic acid (C 18 ), isoleic acid (C 18 ), codoleic acid (C 20 ), eicosenoic acid (C 20 Diunsaturated fatty acids, such as linoleic acid (C60-32-34 ...5-34-34-35-34-35-34-35-34-35-34 18 ), eicosadienoic acid (C 20 Triunsaturated fatty acids, such as linolenic acid, such as alpha-linolenic acid (C...), etc. 18 ) and γ-linolenic acid (C 18 ), pine oil (C 18 ), tung oil acid, for example α-tung oil acid (C 18 ) and β-tung oil (C 18 ), Meadic acid (C 20 ), dihypo-γ-linolenic acid (C 20 ), eicosatrienoic acid (C 20 Tetraunsaturated fatty acids, such as octadecanoic acid (C40-24-3 ... 20 ), Arachidonic acid (C20 ), eicosatraenoic acid (C 20 ) and other pentaunsaturated fatty acids, such as octadecanoic acid (C60-21-32 ... 18 ), eicosapentaenoic acid (C 20 ) and some of their hydrogenated derivatives.

[0375] As for the above-mentioned pentaerythritol and fatty acid esters, considering the possibility of modification due to oxidation, etc., pentaerythritol and fatty acid esters derived from saturated fatty acids are preferred, that is, pentaerythritol and saturated fatty acid esters.

[0376] Furthermore, from the viewpoint of reducing the water retention rate, diester, triester, or tetraester is preferred as the ester of the aforementioned pentaerythritol and fatty acid, more preferably triester or tetraester, and even more preferably tetraester.

[0377] Commercially available products that are esters of the aforementioned pentaerythritol and fatty acids include UNISTAR H-408BRS and H-2408BRS-22 (mixed products) (all manufactured by Nippon Oil Co., Ltd.).

[0378] [(a2) Ester of a chain triol with at least one fatty acid]

[0379] As an ester of (a2) chain triol and at least one fatty acid, examples include triesters of glycerol and fatty acids, diesters of glycerol and fatty acids, and monoesters of glycerol and fatty acids.

[0380] The fatty acids mentioned above are as described above.

[0381] From the viewpoint of reducing the water retention rate, diesters or triesters are preferred as esters of the aforementioned glycerol and fatty acids, and triesters are more preferred.

[0382] Examples of triesters containing glycerol and two or more fatty acids include glycerol with caprylic acid (C8) and capric acid (C8). 10 Triglycerides, glycerols, caprylic acid (C8), and decanoic acid (C8) 10 ) and dodecanoic acid (C 12 Triglycerides, glycerols, caprylic acid (C8), and decanoic acid (C8) 10 ), dodecanoic acid (C 12 ), tetradecanoic acid (C 14 ), hexadecanoic acid (C 16 ) and octadecanoic acid (C 18 Triesters, etc.

[0383] From the perspective of making the melting point below 45°C, the total number of carbon atoms of the fatty acids constituting the glycerol and fatty acid triester is preferably about 40 or less.

[0384] Commercially available products containing the aforementioned triglycerides of glycerol and fatty acids include triglycerides of coconut oil, NA36, PANACET800, PANACET800B and PANACET810S, triglycerides of C2L oil and triglycerides of CL oil (all manufactured by Nippon Oil Co., Ltd.), olive oil, etc.

[0385] [(a3) Ester of a chain-like hydrocarbon diol with at least one fatty acid]

[0386] As (a3) ​​an ester of a chain diol with at least one fatty acid, examples include chain diols of C2 to C6, such as C2 to C6 diols, such as ethylene glycol, propylene glycol, butanediol, pentanediol or hexanediol monoesters or diesters with fatty acids.

[0387] As the aforementioned fatty acids, the fatty acids listed in "(a1) Esters of chain-like hydrocarbon tetraols and at least one fatty acid" can be cited.

[0388] As for the esters of C2-C6 diols and fatty acids mentioned above, considering the possibility of modification due to oxidation, etc., esters of C2-C6 diols and fatty acids derived from saturated fatty acids are preferred, that is, esters of C2-C6 diols and saturated fatty acids.

[0389] Furthermore, from the viewpoint of reducing the water retention rate, esters of diols and fatty acids derived from diols with a large number of carbon atoms are preferred as C2-C6 diols and fatty acids, such as esters of diols and fatty acids derived from butanediol, pentanediol, or hexanediol.

[0390] Furthermore, from the viewpoint of reducing the water retention rate, diesters are preferred as esters of the aforementioned C2-C6 diols and fatty acids.

[0391] Commercially available products that are esters of the aforementioned C2-C6 diols and fatty acids include, for example, COMPOL BL and COMPOL BS (both manufactured by Nippon Oil Co., Ltd.).

[0392] [(b1) Ethers of chain-like hydrocarbon tetraols and at least one aliphatic monohydric alcohol]

[0393] As (b1) ethers of chain alkyl tetraols and at least one aliphatic monohydric alcohol, examples include tetraethers, triethers, diethers and monoethers of pentaerythritol and aliphatic monohydric alcohols.

[0394] Examples of aliphatic monohydric alcohols include saturated aliphatic monohydric alcohols and unsaturated aliphatic monohydric alcohols.

[0395] Examples of the aforementioned saturated aliphatic monohydric alcohols include C1 to C2. 20Saturated aliphatic monohydric alcohols, such as methanol (C1) (C1 represents the number of carbon atoms, the same below), ethanol (C2), propanol (C3) and its isomers, such as isopropanol (C3), butanol (C4) and its isomers, such as sec-butanol (C4) and tert-butanol (C4), pentanol (C5), hexanol (C6), heptanol (C7), octanol (C8) and its isomers, such as 2-ethylhexanol (C8), nonanol (C9), decanol (C1), and so on. 10 ), dodecyl alcohol (C 12 ), tetradecyl alcohol (C 14 ), hexadecyl alcohol (C 16 ), heptadecanol (C 17 ), octadecyl alcohol (C 18 ) and eicosanol (C 20 ), and their unlisted isomers.

[0396] As examples of the aforementioned unsaturated aliphatic monohydric alcohols, alcohols obtained by replacing one of the C=C single bonds in the aforementioned saturated aliphatic monohydric alcohols with a C=C double bond, such as oleyl alcohols, are marketed by Shin Nippon Rika Co., Ltd. under the names RIKACOL series and UNJECOL series.

[0397] [(b2) Ethers of chain triols and at least one aliphatic monohydric alcohol]

[0398] As (b2) ethers of chain triols and at least one aliphatic monohydric alcohol, examples include triethers, diethers and monoethers of glycerol and aliphatic monohydric alcohols.

[0399] The aforementioned aliphatic monohydric alcohols are as described above.

[0400] [(b3) Ethers of chain-like hydrocarbon diols and at least one aliphatic monohydric alcohol]

[0401] As (b3) ethers of chain diols and at least one aliphatic monohydric alcohol, examples include diethers of C2-C6 diols and aliphatic monohydric alcohols, and monoethers of C2-C6 diols and aliphatic monohydric alcohols.

[0402] The aforementioned aliphatic monohydric alcohols are as described above.

[0403] [(c1) An ester of a chain hydrocarbon having four carboxyl groups, a tetracarboxylic acid, a hydroxy acid, an alkoxy acid, or an oxyacid with at least one aliphatic monohydric alcohol]

[0404] As (c1) an ester of a chain hydrocarbon tetracarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having four carboxyl groups and at least one aliphatic monohydric alcohol, examples include monoesters, diesters, trimers and tetraesters of a chain hydrocarbon tetracarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having four carboxyl groups and at least one aliphatic monohydric alcohol, preferably diesters, trimers and tetraesters, more preferably trimers and tetraesters, and even more preferably tetraesters.

[0405] Examples of the aforementioned chain-like tetracarboxylic acids include alkane tetracarboxylic acids such as butane tetracarboxylic acid, pentane tetracarboxylic acid, hexane tetracarboxylic acid, heptane tetracarboxylic acid, octane tetracarboxylic acid, nonane tetracarboxylic acid, and decane tetracarboxylic acid.

[0406] The aforementioned aliphatic monohydric alcohols are as described above.

[0407] [(c2) An ester of a chain hydrocarbon tricarboxylic acid, hydroxy acid, alkoxy acid, or oxyacid with at least one aliphatic monohydric alcohol]

[0408] As (c2) an ester of a chain hydrocarbon tricarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having three carboxyl groups and at least one aliphatic monohydric alcohol, examples include monoesters, diesters and tripesters of a chain hydrocarbon tricarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having three carboxyl groups and at least one aliphatic monohydric alcohol, preferably diesters and tripesters, more preferably tripesters.

[0409] Examples of the aforementioned chain-like hydrocarbon tricarboxylic acids include alkane tricarboxylic acids such as propane tricarboxylic acid, butane tricarboxylic acid, pentane tricarboxylic acid, hexane tricarboxylic acid, heptane tricarboxylic acid, octane tricarboxylic acid, nonane tricarboxylic acid, and decane tricarboxylic acid.

[0410] The aforementioned aliphatic monohydric alcohols are as described above.

[0411] As an example, O-acetylthiocitrate tributyl ester can be cited, and it is available on the market.

[0412] [(c3) An ester of a chain hydrocarbon dicarboxylic acid, hydroxy acid, alkoxy acid, or oxyacid with two carboxyl groups and at least one aliphatic monohydric alcohol]

[0413] As (c3) an ester of a chain-like hydrocarbon dicarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having two carboxyl groups and at least one aliphatic monohydric alcohol, examples include monoesters and diesters of a chain-like hydrocarbon dicarboxylic acid, hydroxy acid, alkoxy acid or oxyacid having two carboxyl groups and at least one aliphatic monohydric alcohol, preferably diesters.

[0414] Examples of the aforementioned chain-like hydrocarbon dicarboxylic acids include alkane dicarboxylic acids such as ethanedioic acid, propanedioic acid, butanedioic acid, pentanedioic acid, hexanedioic acid, heptanedioic acid, octanedioic acid, nonanedioic acid, and decanedioic acid.

[0415] Regarding the aforementioned aliphatic monohydric alcohols, as described above.

[0416] As an example, dioctyl adipic acid ester can be cited, and it is sold on the market.

[0417] [(d1) Aliphatic monohydric alcohols and their ethers]

[0418] Examples of aliphatic monohydric alcohols and their ethers, as described above, include those having the following formula (1):

[0419] R 1 OR 2 (1)

[0420] (where R is in the formula) 1 and R 2 (These are chain hydrocarbons)

[0421] Compounds.

[0422] The aliphatic monohydric alcohol constituting the above ether (in formula (1), equivalent to R) 1 OH and R 2 OH), as described above.

[0423] [(d2)dialkyl ketone]

[0424] As the aforementioned dialkyl ketones, examples with the following formula (2) can be listed:

[0425] R 3 COR 4 (2)

[0426] (where R is in the formula) 3 and R 4 (Alkyl groups respectively)

[0427] Compounds.

[0428] In addition to being sold on the market, the aforementioned dialkyl ketones can also be obtained by known methods, such as oxidizing secondary alcohols with chromic acid.

[0429] [(d3) esters of fatty acids and aliphatic monohydric alcohols]

[0430] As esters of the aforementioned fatty acids and aliphatic monohydric alcohols, examples can be listed that have the following formula (3):

[0431] R 5 COOR 6 (3)

[0432] (where R is in the formula) 5 and R 6 (These are chain hydrocarbons)

[0433] Compounds.

[0434] The fatty acids that constitute the above esters (in formula (3), are equivalent to R) 5 The fatty acids listed above (COOH) are used, and saturated fatty acids are preferred considering the possibility of modification due to oxidation, etc. The aliphatic monohydric alcohols constituting the above esters (in formula (3), R) are equivalent to... 6 OH), for example, the above-mentioned aliphatic monohydric alcohols can be listed.

[0435] Examples of esters of the aforementioned fatty acids and aliphatic monohydric alcohols include, for instance, dodecanoic acid (C... 12 ) and dodecyl alcohol (C 12 ) esters, tetradecanoic acid (C 14 ) and dodecyl alcohol (C 12 Esters of fatty acids and aliphatic monohydric alcohols, such as ELECTOL WE20 and ELECTOL WE40 (both manufactured by Nippon Oil Co., Ltd.), are commercially available products.

[0436] [(d4)dialkyl carbonate]

[0437] As the above-mentioned dialkyl carbonates, examples with the following formula (4) can be listed:

[0438] R 7 OC(=O)OR 8 (4)

[0439] (where R is in the formula) 7 and R 8 (Alkyl groups respectively)

[0440] Compounds.

[0441] In addition to being commercially available, the aforementioned dialkyl carbonates can also be synthesized through the reaction of carbonyl chloride with alcohols, the reaction of chloroformates with alcohols or alcohol derivatives, and the reaction of silver carbonate with alkyl iodides.

[0442] [(e1) Polyoxy C3-C6 alkylene glycols]

[0443] The aforementioned polyoxy C3-C6 alkylene glycols refer to: i) homopolymers having any one of the following skeletons selected from the group consisting of oxy-C3-C6 alkylene skeletons, namely oxy-propylene skeletons, oxy-butylene skeletons, oxy-pentylene skeletons, and oxy-hexylene skeletons, and having hydroxyl groups at both ends; ii) block copolymers having two or more skeletons selected from the above group and having hydroxyl groups at both ends; or iii) random copolymers having two or more skeletons selected from the above group and having hydroxyl groups at both ends.

[0444] Commercially available products of the aforementioned poly(C3-C6) alkylene glycols include, for example, UNIOL (trademark) PB-500 and PB-700 (both manufactured by Nippon Yu Co., Ltd.).

[0445] [(e2) Ester of polyoxy C3-C6 alkylene glycols with at least one fatty acid]

[0446] As an ester of the aforementioned polyoxy C3-C6 alkylene glycol and at least one fatty acid, examples include esters, monoesters, and diesters in which one or both of the OH ends of the polyoxy C3-C6 alkylene glycol described in the item “(e1) polyoxy C3-C6 alkylene glycol” are esterified with fatty acids.

[0447] Regarding the fatty acids mentioned above, as stated above.

[0448] [(e3) Ethers of polyoxy C3-C6 alkylene glycols and at least one aliphatic monohydric alcohol]

[0449] As an ether of the aforementioned polyoxy C3-C6 alkylene glycol and at least one aliphatic monohydric alcohol, examples include ethers, i.e., monoethers and diethers, in which one or both of the OH ends of the polyoxy C3-C6 alkylene glycol described in the item “(e1) polyoxy C3-C6 alkylene glycol” are etherified with an aliphatic monohydric alcohol.

[0450] Regarding the aforementioned aliphatic monohydric alcohols, as described above.

[0451] [(f1) chain alkanes]

[0452] As (f1) chain alkanes, examples include straight-chain alkanes and branched-chain alkanes.

[0453] For example, PARLEAM6 (Nippon Oil Co., Ltd.) is a commercially available product of the aforementioned hydrocarbons.

Claims

1. An absorbent article in the form of underwear, the absorbent article having a length direction and a width direction, and comprising an outer body and an absorbent main body having an absorbent core, characterized in that, The absorbent underwear-type garment, when unfolded, has mutually orthogonal length, width, and thickness directions, and is divided into a front region and a rear region. The front region is positioned slightly forward of the center along the length direction, and the rear region is positioned slightly backward of the center along the length direction. The absorbent underwear-type garment comprises: a skin-contacting sheet having a skin-contacting surface; and an opposing sheet disposed opposite to the skin-contacting sheet. The underwear-type absorbent article has an adhesive preparation area, which is provided with adhesive for bonding the skin-contact pad and the opposing pad. The underwear-type absorbent article has an adhesion reducing agent configuration area in the adhesive configuration area, the adhesion reducing agent configuration area being configured with an adhesion reducing agent that reduces the adhesion based on the adhesive.

2. The absorbent underwear-type garment according to claim 1, characterized in that, The underwear-type absorbent articles do not contain volatile cooling agents.

3. The absorbent underwear-type garment according to claim 1 or 2, characterized in that, The bonding reducer configuration area is configured in the outer casing.

4. The absorbent underwear-type garment according to claim 3, characterized in that, In the unfolded state, the bonding reducer configuration area is positioned on the outer side of the absorbent body along the length direction.

5. The absorbent underwear-type garment according to claim 4, characterized in that, In the unfolded state, the bonding reducer configuration region is disposed in a portion adjacent to at least one of the two ends of the absorbent body in the length direction.

6. The absorbent underwear-type garment according to claim 3, characterized in that, In the unfolded state, the bonding reducer configuration area is disposed in the portion adjacent to the outer edge of the absorbent body.

7. The absorbent underwear-type garment according to claim 3, characterized in that, The underwear-type absorbent article has a pair of locking portions that lock the front and rear regions in place, and in the unfolded state, the bonding reducer placement area is disposed between the pair of locking portions of the outer body.

8. The absorbent underwear-type garment according to claim 3, characterized in that, In the unfolded state, the outer body has a region consisting of three or more sheets in the thickness direction, and the bonding reducer placement region is disposed in the region consisting of three or more sheets.

9. The absorbent underwear-type garment according to claim 3, characterized in that, In the unfolded state, the outer body has a width-direction elastic region, the width-direction elastic region has an elastic member capable of stretching and contracting along the width direction, and the bonding reducer placement region is disposed in the width-direction elastic region.

10. The absorbent underwear-type garment according to claim 3, characterized in that, In the unfolded state, the outer casing has an elastic region in the width direction and a non-elastic region in the width direction. The elastic region in the width direction has an elastic member capable of stretching and contracting along the width direction. The non-elastic region in the width direction is located closer to the center in the length direction than the elastic region in the width direction, and does not have an elastic member capable of stretching and contracting along the width direction. The bonding reducer configuration region is configured in the non-elastic region in the width direction.

11. The absorbent underwear-type article according to claim 3, characterized in that, In the unfolded state, the bonding reducer configuration area is disposed in a region that does not overlap with the absorbent body in the thickness direction.

12. The absorbent underwear-type garment according to claim 1, characterized in that, The bonding reducer configuration region is disposed in the absorbent body.

13. The absorbent underwear-type article according to claim 12, characterized in that, The bonding reducer is an oily agent.

14. The absorbent underwear-type article according to claim 12 or 13, characterized in that, In its unfolded state, the underwear-type absorbent item is divided into a ventral region, a crotch region, and a back region. In the unfolded state, the bonding reducer configuration area is disposed in the crotch area of ​​the absorbent body.

15. The absorbent underwear-type article according to claim 12, characterized in that, In the unfolded state, the absorbent body is divided into a central region along the length direction, a front region along the length direction, and a rear region along the length direction. The central region along the length direction is located at the center of the length direction. The front region and the rear region along the length direction are respectively located at the front end and the rear end of the central region along the length direction. Furthermore, the absorbent body is divided into a central region along the width direction and two side regions along the width direction. The central region along the width direction is located at the center of the width direction, and the two side regions along the width direction are located on the two outer sides of the central region along the width direction. In the unfolded state, the bonding reducer configuration area is disposed in the central region in the length direction and the central region in the width direction of the absorbent body.

16. The absorbent underwear-type article according to claim 15, characterized in that, In the unfolded state, the adhesive application area is disposed in the front region in the length direction, the rear region in the length direction, and the two side regions in the width direction of the absorbent body, and the bonding reducer application area is not disposed in the rear region in the length direction and the two side regions in the width direction of the absorbent body.

17. The absorbent underwear-type article according to claim 12, characterized in that, In the unfolded state, the bonding reducer configuration area is disposed in the absorbent body in the front and rear regions, and the adhesive configuration area is disposed in the absorbent body in the rear region. The area of ​​the bonding reducer configuration region in the absorbent body of the rear region is smaller than the area of ​​the bonding reducer configuration region in the absorbent body of the front region, and smaller than the area of ​​the adhesive configuration region in the absorbent body of the rear region.

18. The absorbent underwear-type article according to claim 12, characterized in that, The absorbent underwear-type garment has an elastic member configuration area disposed on the non-skin side of the absorbent core, and the elastic member is provided along the length direction from the front region to the rear region. In the unfolded state, the bonding reducer configuration area and the elastic member configuration area overlap in the thickness direction.

19. The absorbent underwear-type article according to claim 18, characterized in that, In the unfolded state, the absorbent body has a compression portion in the region overlapping with the bonding reducer configuration region and the elastic member configuration region in the thickness direction, and the compression portion compresses the absorbent core from the non-skin side. The compression portion extends along the length direction from the center of the absorbent core in the width direction.

20. The absorbent underwear-type article according to claim 18, characterized in that, In the unfolded state, the absorbent core has a low unit area weight region in the thickness direction, which overlaps with the bonding reducer configuration region and the elastic member configuration region. This low unit area weight region has a unit area weight less than the average unit area weight of the absorbent core. The low weight-per-unit area region of the absorbent core extends along the length direction from the center of the absorbent core in the width direction.

21. The absorbent underwear-type article according to claim 18, characterized in that, The absorbent body has a pair of compression portions that compress the skin-contacting sheet, the opposing sheet, and the absorbent core, and extends along the length direction. The bonding reducer configuration region is disposed between the pair of compression portions of the absorbent body.

22. The absorbent underwear-type article according to claim 12, characterized in that, In the unfolded state, the absorbent body has a plurality of ridges that protrude toward the skin and extend along the width direction. The bonding reducer configuration area is configured in the plurality of ridges.

23. The absorbent underwear-type article according to claim 12, characterized in that, In the unfolded state, the absorbent body is divided into a central region along the length direction, a front region along the length direction, and a rear region along the length direction. The central region along the length direction is located at the center of the length direction. The front region and the rear region along the length direction are respectively located at the front end and the rear end of the central region along the length direction. Furthermore, the absorbent body is divided into a central region along the width direction and two side regions along the width direction. The central region along the width direction is located at the center of the width direction, and the two side regions along the width direction are located on the two outer sides of the central region along the width direction. The bonding reducer configuration region is disposed in the central region in the length direction and the central region in the width direction. In the bonding reducer configuration area, the skin-adhesive patch has a low unit area weight region for the bonding reducer, wherein the low unit area weight region for the bonding reducer has a lower unit area weight of the bonding reducer than the average unit area weight of the bonding reducer in the skin-adhesive patch. In the bonding reducer configuration region, the absorbent core has a region with a high unit area weight of the bonding reducer, wherein the high unit area weight region of the bonding reducer has a higher unit area weight of the bonding reducer than the average unit area weight of the bonding reducer in the absorbent core. In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer overlaps with the high unit area weight region of the absorbent core bonding reducer in the thickness direction.

24. The absorbent underwear-type article according to claim 23, characterized in that, The absorbent body has a high unit area weight portion within the absorbent core, and this high unit area weight portion has a unit area weight higher than the average unit area weight of the absorbent core. In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the high unit area weight portion of the absorbent core.

25. The absorbent underwear-type article according to claim 23 or 24, characterized in that, The absorbent underwear-type garment is folded at the fold section. In the unfolded state, the low unit area weight region of the skin-adhesive bonding reducer and the high unit area weight region of the absorbent core bonding reducer overlap in the thickness direction of the folded portion.

26. The absorbent underwear-type article according to claim 12, characterized in that, The absorbent body is folded by three folds extending along the width direction, and is divided by these three folds into four regions arranged along the length direction: two end regions at both ends and two central regions between the two end regions. In the absorbent body in the unfolded state, either (i) or (ii) below is satisfied: (i) The two end regions and the two central regions each have the bonding reducer configuration region, and the bonding reducer in the two end regions has a smaller unit area weight compared to the two central regions; (ii) The two central regions each have the bonding reducer configuration region, but each of the two end regions does not have the bonding reducer configuration region.

Images