Panty-type absorbent article

Abstract

A pant-type absorbent article (1) having an absorbent body (10) and an outer cover member (20) provided with a pair of leg opening portions (LHC) on both sides in the left-right direction of the outer cover member (20), wherein the pant-type absorbent article (1) has a crotch elastic member (40) provided on the non-skin side of the absorbent core (11) and extending in the longitudinal direction, the length (Lef) of the crotch elastic member (40) on the front side of the central position (CL) is longer than the length (Leb) of the crotch elastic member (40) on the rear side of the central position (CL) in the longitudinal direction, the entire periphery of the leg opening portion (LHC) is located on the outer side of the outer side end (10es) of the absorbent body (10) in the left-right direction, and the outer cover member (20) does not have a leg periphery elastic member that extends in the longitudinal direction across the central position (CL) and along the periphery of the leg opening portion (LHC).

Description

Technical Field

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

[0002] Conventionally, in absorbent articles of the underwear type (e.g., underwear-type diapers) that have an absorbent body and a waistband member arranged to cover the absorbent body from the front and back, a technique is known to be provided that improves the fit of the crotch portion of the absorbent body by providing an elastic member (crotch elastic member) that stretches along the length direction of the absorbent body. For example, Patent Document 1 discloses a technique for a wearable article having a base 100 (outer garment member) and an absorbent body 200, and having a central elastic member 41C (crotch elastic member) that overlaps with the non-skin side of the absorbent body and extends along the length direction at approximately the center in the width direction.

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Publication No. 2011-132688 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] When wearing an absorbent garment with such a crotch elastic member, the absorbent body, which deforms into a protrusion towards the skin due to the stretching force of the crotch elastic member, is pulled up together with the outer garment to make it fit snugly against the crotch area. However, depending on the arrangement of the crotch elastic member on the absorbent body and the shape of the leg opening formed on the outer garment, it is sometimes difficult to sufficiently improve the fit of the crotch area. For example, if the crotch elastic member is positioned on the rear side in the length direction, the absorbent body may not fit snugly against the excretory opening (urine opening or vaginal opening, etc.). In addition, as shown in Patent Document 1, if the leg opening (leg circumference) is cut into a position that is more inward than the two sides of the absorbent body, the two sides of the absorbent body may not be able to be sufficiently raised when worn, which may result in poor fit of the crotch area. Furthermore, if a stretching member (leg elastic member, etc.) is provided that is continuous along the contour of the leg opening, the absorbent body may not be able to deform completely, and the fit may easily become poor.

[0008] The present invention was made in view of the above-mentioned problems, and its object is to provide an absorbent underwear-type article with good fit in the crotch area.

[0009] Solution for solving the problem

[0010] The main invention for achieving the above-mentioned objective is an absorbent underwear-type article, which, in its unfolded and extended state, has intersecting length, left-right, and thickness directions. The absorbent underwear-type article comprises: an absorbent body having an absorbent core; and an outer member disposed at a position closer to the skin than the absorbent body. On both sides of the outer member in the left-right direction, a pair of leg portions are provided at the center of the outer member in the length direction, the width of which in the left-right direction is narrower than the two ends in the length direction. The article is characterized in that it has a crotch elastic member disposed at a position closer to the skin than the absorbent core and extending and contracting along the length direction. In the length direction, the length of the crotch elastic member forward of the central position is longer than the length of the crotch elastic member backward of the central position. In the left-right direction, the entire periphery of the leg portions is located outside the outer end of the absorbent body. The outer member does not have a leg periphery elastic member that crosses the central position in the length direction and extends and contracts along the periphery of the leg portions.

[0011] Other features of the invention will be set forth herein and in the accompanying drawings.

[0012] The effects of the invention

[0013] According to the present invention, an absorbent underwear-type article with good fit in the crotch area can be provided. Attached Figure Description

[0014] Figure 1 This is a front view of the underwear-type disposable diaper 1 viewed from the ventral side.

[0015] Figure 2 This is a top view of the underwear-type disposable diaper 1 in its unfolded and extended state.

[0016] Figure 3 yes Figure 2 A schematic cross-sectional view of the underwear-type disposable diaper 1 at the CC position.

[0017] Figure 4A This is a top view of the absorbent body 10 viewed from the skin side. Figure 4B This is a schematic cross-sectional view of the absorbent body 10 with the central value CL in the length direction.

[0018] Figure 5A and 5B This is a diagram illustrating the convex deformation of the absorbent body 10.

[0019] Figure 6A and Figure 6B This is a diagram illustrating the action when wearing the comparative example of underwear-type diapers 5.

[0020] Figure 7Aand 7B This diagram illustrates the action of wearing the underwear-type diaper 1 of this embodiment.

[0021] Figure 8 This is a top view used to illustrate the specific structure of diaper 1.

[0022] Figure 9 This is a top view illustrating the configuration of the body joint 70 where the absorbent body 10 and the outer component 20 are joined. Detailed Implementation

[0023] Based on the description in this specification and the accompanying drawings, at least the following matters become clear.

[0024] (Method 1)

[0025] An absorbent underwear-type garment, in its unfolded and extended state, has intersecting length, left-right, and thickness directions. The absorbent underwear-type garment comprises: an absorbent body with an absorbent core; and an outer garment member disposed at a position closer to the skin than the absorbent body. On both sides of the outer garment member in the left-right direction, a pair of leg portions are provided at the center of the outer garment member in the length direction, with a width in the left-right direction narrower than the two ends in the length direction. The garment is characterized in that it has a crotch elastic member disposed at a position closer to the skin than the absorbent core and extending and contracting along the length direction. In the length direction, the length of the crotch elastic member forward of the central position is longer than the length of the crotch elastic member backward of the central position. In the left-right direction, the entire periphery of the leg portions is located outside the outer end of the absorbent body. The outer garment member does not have a leg periphery elastic member that crosses the central position in the length direction and extends and contracts along the periphery of the leg portions.

[0026] According to the absorbent underwear of method 1, since the crotch elastic member is located near the front side in the length direction, the absorbent body protrudes and deforms towards the skin near the wearer's excretory opening, improving the fit of the crotch area. However, as the central portion of the absorbent body protrudes and deforms towards the skin in the left-right direction, gaps may easily form between the two sides in the left-right direction and the wearer's groin. But, since the periphery of the leg opening formed in the outer member is located further outward than the outer end of the absorbent body, the two sides of the absorbent body are easily pulled up by the outer member when it is pulled up. Therefore, the convexly deformed absorbent body fits the crotch area more easily, suppressing gaps between the two sides of the absorbent body and the wearer's groin. Furthermore, since a leg elastic member that runs continuously along the leg opening of the outer member is not provided, excessive pulling due to the elastic force of the leg elastic member can be prevented when the outer member is pulled up. Therefore, it can prevent the sides or leg openings of the absorbent body from sinking into the groin area or hinder the convex deformation of the absorbent body. This improves the fit of underwear-type absorbent items in the crotch area.

[0027] (Method 2)

[0028] According to embodiment 1, the absorbent article of the underwear type is characterized in that the outer garment component has: a first piece that is continuous from one side to the other in the length direction; and a second piece that is stacked on the first piece at both ends in the length direction and is not stacked on the first piece at the central portion in the length direction.

[0029] According to Method 2, the absorbent underwear-type garment ensures strength near both ends in the length direction by constructing the waistband with at least two layers, thus preventing breakage when the outer garment is grabbed and pulled up. On the other hand, near the center portion in the length direction that abuts against the wearer's crotch, the rigidity of the outer garment is reduced compared to the ends by decreasing the number of layers, making it easier to ensure softness in the crotch area. Therefore, the convexly deformed absorbent body easily conforms to the wearer's crotch area.

[0030] (Method 3)

[0031] According to method 1 or 2, the absorbent article of the underwear type is characterized in that the area of ​​the portion of the outer member located in the longitudinal direction that is forward of the central position and does not overlap the second piece on the first piece is larger than the area of ​​the portion of the outer member located in the longitudinal direction that is backward of the central position and does not overlap the second piece on the first piece.

[0032] According to Method 3, in the absorbent underwear-type garment, the area on the front of the crotch has a larger portion with fewer layers compared to the back area, making it easier to ensure softness on the front of the crotch. Therefore, when worn, the outer component easily deforms softly in the area contacting the wearer's anus, minimizing any discomfort. Furthermore, the area near the anus is less likely to obstruct the convex deformation of the absorbent body, improving fit.

[0033] (Method 4)

[0034] The absorbent article of the underwear type according to any one of methods 1 to 3 is characterized in that, on the outer garment member, between the thickness direction of the first piece and the second piece, there is a left-right elastic member arranged in a straight line along the left-right direction, and the shortest distance from the central position to the left-right elastic member at a position in the length direction that is forward of the central position is longer than the shortest distance from the central position to the left-right elastic member at a position that is backward of the central position.

[0035] According to the absorbent underwear-type garment of method 4, the longer the distance from the center position to the location where the lateral elastic members are provided, the longer the area of ​​low rigidity can be extended. Therefore, by making the distance from the center position to the lateral elastic members on the front side longer than the distance from the center position to the lateral elastic members on the back side, the area of ​​low rigidity of the outer component on the front side of the crotch is larger. This makes it easier to ensure the softness of the outer component near the wearer's anal sphincter. Furthermore, it is less likely to hinder the convex deformation of the absorbent body near the anal sphincter, thus improving fit.

[0036] (Method 5)

[0037] The absorbent article of the underwear type according to any one of methods 1 to 4 is characterized in that the outer component does not have an elastic member that is obliquely arranged relative to the length direction.

[0038] According to method 5, when the outer garment is pulled up during wear, it is difficult to apply excessive force in the tilting direction, thus preventing the shape of the convexly deformed absorbent body from collapsing. Therefore, it is easy to prevent the fit from deteriorating.

[0039] (Method 6)

[0040] The absorbent article of the underwear type according to any one of methods 1 to 5 is characterized in that the absorbent core has a narrowed portion in the central part of the longitudinal direction, the width of which in the left-right direction is narrower than that at both ends of the longitudinal direction, and in the left-right direction, the maximum value of the length between the outer end of the absorbent body and the periphery of the narrowed portion is greater than the minimum value of the length between the periphery of the leg circumference and the outer end of the absorbent body.

[0041] According to Method 6, the absorbent underwear-type garment, by maximizing the lateral narrowing of the absorbent core, makes it difficult for the edge of the absorbent core to interfere with the wearer's legs or groin, thus minimizing the feeling of stiffness. On the other hand, by minimizing the length of the portion of the outer component that protrudes to the outer side of the absorbent body, the area of ​​direct contact between the outer component and the wearer's skin can be reduced, minimizing any sense of disharmony.

[0042] (Method 7)

[0043] The absorbent article of the underwear type according to any one of methods 1 to 6 is characterized in that the narrowest part of the outer member in the left-right direction is located in the length direction at a position further forward than the central position.

[0044] According to the absorbent underwear of method 7, the width of the outer component becomes the narrowest in the front part of the crotch area. Therefore, when wearing the absorbent underwear, the edge of the outer component (the perimeter of the leg circumference) is less likely to interfere with the leg movement when the wearer moves their leg forward. This reduces the feeling of disharmony in the crotch area.

[0045] (Method 8)

[0046] The absorbent article of the underwear type according to any one of methods 1 to 7 is characterized in that the narrowest part of the outer member in the left-right direction is located in the area that overlaps with the crotch elastic member in the length direction.

[0047] According to Method 8, in the absorbent underwear-type garment, by minimizing the area of ​​the outer components on both sides of the area where the elastic force of the crotch elastic member acts, the resistance during the convex deformation of the absorbent body is reduced, making it easier for the absorbent body to deform into a convex shape. This further improves the fit of the absorbent body in the crotch area.

[0048] (Method 9)

[0049] The absorbent article of the underwear type according to any one of methods 1 to 8 is characterized in that, on both sides of the region overlapping the crotch elastic member in the longitudinal direction in the left-right direction, there are body joints for joining the absorbent body and the outer member.

[0050] According to Method 9, in the absorbent underwear-type garment, the absorbent body and the outer garment are firmly joined together on both sides of the crotch elastic member in the left and right directions, thus preventing the sides of the absorbent body from lifting off the outer garment. Therefore, it can reduce the discomfort near the groin area when wearing the garment.

[0051] (Method 10)

[0052] The absorbent article of the underwear type according to any one of methods 1 to 9 is characterized in that the width of the body joint in the left-right direction in the region overlapping with the crotch elastic member in the length direction is equal to the width of the body joint in the left-right direction at both ends of the absorbent body in the length direction.

[0053] According to the absorbent underwear of method 10, since the absorbent body and the outer component are uniformly joined as a whole, it is difficult to generate stress concentration when the outer component is pulled up when wearing the absorbent underwear, and it can suppress local forces from acting on the absorbent body through the outer component. Therefore, the convex deformation of the absorbent body is not easily hindered, and the fit of the crotch area can be easily improved.

[0054] (Method 11)

[0055] The absorbent article of the underwear type according to any one of methods 1 to 10 is characterized in that the absorbent body does not have a leg elastic member that stretches along the length direction at both ends in the left-right direction.

[0056] According to the absorbent underwear of method 11, the elastic force generated by the crotch elastic member has a greater influence in the central part in the left-right direction, making the absorbent core easily pushed towards the skin and the absorbent body easily deformed. As a result, the fit of the crotch area is improved.

[0057] (Method 12)

[0058] The absorbent article of the underwear type according to any one of methods 1 to 11 is characterized in that the area where the outer member overlaps with the crotch elastic member in the length direction does not have an elastic member that can stretch or contract in the left-right direction.

[0059] According to the absorbent underwear-type article of method 12, since no elastic member that stretches and contracts in the left-right direction is provided in the area overlapping with the crotch elastic member in the length direction, the stretching and contraction in the length direction based on the crotch elastic member is difficult to interfere with. Therefore, the absorbent body can be easily and completely deformed. As a result, the fit of the crotch area is improved.

[0060] (Method 13)

[0061] The absorbent underwear-type article according to any one of methods 1 to 12 is characterized in that the outer garment member has a pair of side joints at both ends in the left-right direction, which join one end and the other end in the length direction to each other; in the unfolded and extended state, the straight line connecting the central position between the end of one side and the other end of the side joint on one side in the length direction and the end of one side in the length direction of the crotch elastic member with the shortest distance does not have a point of intersection with the periphery of the leg circumference; and the straight line connecting the central position between the end of one side and the other end of the side joint on the other side in the length direction and the end of the other side in the length direction of the crotch elastic member with the shortest distance does not have a point of intersection with the periphery of the leg circumference.

[0062] According to the absorbent underwear of method 13, when wearing it, by grasping both sides of the outer garment member and pulling it up, the straight line connecting the position of grasping the outer garment member (the center position of the side joint) to the crotch elastic member with the shortest distance is not interrupted by the leg opening. Therefore, the force of pulling up the absorbent underwear is easily transmitted along this straight line. Thus, the absorbent body can be lifted efficiently via the outer garment member. As a result, the absorbent body can easily fit against the wearer's crotch.

[0063] ===Implementation Methods===

[0064] Hereinafter, the absorbent underwear of the present invention will be described using the disposable diaper 1 (hereinafter also referred to as "diaper 1") as an example. However, the absorbent underwear of the present invention is not limited to the above, and can also be used as a sanitary napkin, menstrual underwear, etc.

[0065] <Basic Structure of Underwear-Type Disposable Diapers 1>

[0066] Figure 1 This is a front view of the underwear-type disposable diaper 1 viewed from the ventral side. Figure 2 This is a top view of the underwear-type disposable diaper 1 in its unfolded and extended state. Figure 3 yes Figure 2 A schematic cross-sectional view of the underwear-type disposable diaper 1 at the CC position.

[0067] The unfolded state of the underwear-type disposable diaper 1 (diaper 1) refers to the state in which the pair of side joints 2 located on both sides of the diaper 1 are separated, and the diaper 1 is opened and unfolded into a flat surface. Furthermore, the elongated state of the diaper 1 refers to the state in which it is stretched to the point that the folds of the diaper 1 are no longer visually discernible. Specifically, it refers to the state in which the dimensions of each component constituting the diaper 1 (such as the top sheet 12 or the inner layer sheet 23 described later) are stretched to be the same as or close to the dimensions of a single component.

[0068] like Figure 1 As shown, diaper 1 has mutually orthogonal vertical, horizontal, and front-back directions. Figure 1 (In the direction of the paper's center), it has a waist opening (BH) and a pair of leg openings (LH). The upper side in the vertical direction corresponds to the waist opening (BH), and the lower side corresponds to the crotch side. The front side in the front-back direction corresponds to the wearer's abdomen, and the back side corresponds to the wearer's back.

[0069] In addition, Figure 2 In the unfolded state shown, diaper 1 has intersecting length, left-right, and thickness directions. Figure 2 (The direction that runs through the paper). Additionally... Figure 2 The left and right directions in the unfolded state are the same as Figure 1 In the underwear-style state, the left and right directions are the same. Furthermore, in the unfolded state, the length direction is the same as in the underwear-style state, running vertically. Also, one side of the length direction corresponds to the front (abdomen), and the other side corresponds to the back (back). Additionally, as... Figure 3 As shown, the direction in which the materials constituting diaper 1 are layered is defined as the thickness direction. The side in the thickness direction that contacts the wearer's skin is defined as the skin side, and the opposite side is defined as the non-skin side.

[0070] The diaper 1 has an absorbent body 10 and an outer fitting 20 disposed on the non-skin side of the absorbent body 10. The absorbent body 10 and the outer fitting 20 are connected via a body joint 70 described later (see reference). Figure 9 The layers are joined in the thickness direction. Alternatively, covers 31 and 32 may be provided at both ends of the absorbent body 10 along its length, extending from the skin side (see reference). Figure 3 Therefore, it is possible to suppress the edge of the absorbent body 10 from sinking into the wearer and the opening of the absorbent body 10.

[0071] In this instruction manual, such as Figure 2 As shown, in the unfolded and stretched state of diaper 1, the ventral region when diaper 1 is divided into three equal parts along its length is called "ventral side 1A", the central region is called "crotch area 1B", and the dorsal region is called "dorsal side 1C". Diaper 1 from Figure 2From the unfolded state shown, the parts are folded in half at the center position CL in the length direction. Parts of the ventral side 1A and dorsal side 1C facing each other in the thickness direction (front-back direction) are connected to the two sides in the left-right direction by a pair of side joints 2, thus forming... Figure 1 The diaper 1 shown is an underwear-type diaper. Furthermore, as a joining method utilizing the side joint 2, examples include joining methods using heat fusion, ultrasonic fusion, or adhesives.

[0072] (Absorbent Body 10)

[0073] Figure 4A This is a top view of the absorbent body 10 viewed from the skin side. Figure 4B This is a schematic cross-sectional view of the absorbent body 10 with a central value CL in the length direction. The absorbent body 10 has an absorbent core 11 that absorbs and retains excretory fluids such as urine, a liquid-permeable top sheet 12 (e.g., nonwoven fabric) disposed on the skin side of the absorbent core 11, a liquid-impermeable bottom sheet 13 (e.g., a resin film such as polyethylene or polypropylene) disposed on the non-skin side of the absorbent core 11, a liquid-permeable intermediate sheet 15 (e.g., nonwoven fabric) disposed between the top sheet 12 and the absorbent core 11, a pair of side sheets 16, and an elastic member cover sheet 17.

[0074] The absorbent core 11 absorbs and retains excretory fluids such as urine. The surface of the absorbent core 11 can also be covered by a liquid-permeable core wrapping sheet 18 (e.g., tissue paper). The absorbent core 11 is formed by molding a liquid-absorbing material such as water-retaining fibers or highly absorbent polymers (so-called SAPs) into a predetermined shape. In this embodiment, for example... Figure 4A As shown, the absorbent core 11 is roughly hourglass-shaped, narrowing inward from the central portion in the length direction to the left and right directions. However, the planar shape of the absorbent core 11 is not particularly limited; for example, it can also be formed as a rectangular shape when viewed from above. In addition, in this embodiment, the width (maximum width) of the absorbent body 10 in the left and right directions is approximately equal to the width (maximum width) of the absorbent core 11 in the left and right directions.

[0075] A pair of leak-proof wall portions 60 are provided on both sides of the absorbent body 10 in the left-right direction, extending along the length direction. For example... Figure 4B As shown, the side pieces 16 extending from the non-skin-side portion of the base piece 13 are bent at multiple points and positioned on the skin-side portion of the top piece 12 to form leak-proof wall portions 60. Leak-proof wall elastic members 61 (e.g., rubber) are installed in the leak-proof wall portions 60 in a lengthwise extended state. When the diaper 1 is worn, the elasticity of the leak-proof wall elastic members 61 causes the leak-proof wall portions 60 to stand upright towards the wearer's skin, effectively blocking excrement.

[0076] Furthermore, the absorbent body 10 has a crotch elastic member 40 that is stretchable in the length direction at its central portion in the left-right direction and on the non-skin side of the absorbent core 11 in the thickness direction. Specifically, in this embodiment, the crotch elastic member 40 is installed between the base sheet 13 disposed on the non-skin side of the absorbent core 11 and the elastic member cover sheet 17 disposed on the non-skin side of the base sheet 13, in a state that extends along the length direction in the thickness direction. However, the crotch elastic member 40 only needs to be disposed on the non-skin side of the absorbent core 11; for example, it can also be disposed between the core wrapping sheet 18 and the base sheet 13 on the non-skin side of the absorbent core 11.

[0077] exist Figure 4A In the absorbent body 10 (absorbent core 11), five crotch elastic members 41 to 45 are arranged at intervals along the length direction in the central part in the left-right direction. Hereinafter, the area divided by these five crotch elastic members 40 (41 to 45) will also be referred to as the "crotch elastic region ER". That is, as... Figure 4A As shown by the diagonal line, the area surrounded by the crotch elastic member 41 arranged on the far side in the left-right direction and the crotch elastic member 45 arranged on the far side is called the crotch elastic region ER. However, the number and arrangement of the crotch elastic members 40 are not limited thereto.

[0078] Furthermore, when the absorbent core 11 (absorbent body 10) is divided into three equal parts in the left-right direction, the region located in the center is designated as the "central region CR," and the regions located on either side of the central region CR are designated as the "side regions SR." Here, "divided into three equal parts" refers to... Figure 4A In this case, the distance (width) between one end 11esl and the other end 11esr of the absorbent core 11 in the left-right direction is divided into three equal parts. Furthermore, as... Figure 4A As shown, in diaper 1, the crotch elastic region ER is provided in the central region CR. Specifically, at least one of the crotch elastic members 41 to 45 forming the crotch elastic region ER is provided overlapping the central region CR when viewed in the thickness direction. When wearing diaper 1, the crotch elastic member 40 (crotch elastic region ER) exhibits elasticity, and deforms three-dimensionally in a manner that the central region CR of the absorbent core 11 protrudes towards the skin, thus conforming to the crotch area or the excretion opening, thereby achieving good absorbency and fit.

[0079] (External components 20)

[0080] The outer component 20 is a sheet component that is formed by narrowing inwards in the left and right directions from the central part in the length direction. For example... Figure 2 and Figure 3 As shown, the outer component 20 has an abdominal outer layer 21, a back outer layer 22, an inner layer 23, waist elastic components 24 and 25, and a hip elastic component 26.

[0081] The outer ventral layer 21, outer dorsal layer 22, and inner layer 23 can be exemplified as soft sheet components such as non-woven fabric. The inner layer 23 forms the shape of the outer component 20 and is a sheet component that extends from the ventral portion 1A through the crotch portion 1B to the dorsal portion 1C. The outer ventral layer 21 is disposed on the non-skin side of the inner layer 23 and is a portion of the ventral portion 1A. The outer ventral layer 21 overlaps with the side joint 2 in the longitudinal direction, and its length in the longitudinal direction is the same as that of the side joint 2. The outer dorsal layer 22 is disposed on the non-skin side of the inner layer 23 and is a portion of the dorsal portion 1C and the crotch portion 1B. The outer dorsal layer 22 overlaps with the side joint 2 in the longitudinal direction and extends downwards towards the crotch side beyond the side joint 2. In the unfolded state of the diaper 1, the ventral outer layer 21 and the dorsal outer layer 22 are separated in the length direction, and the inner layer 23 is exposed to the outside as the non-skin side of the diaper 1 between the ventral outer layer 21 and the dorsal outer layer 22.

[0082] In addition, Figure 3 In this case, at the front end (rear end) of the outer component 20 along its length, a portion of the ventral outer layer 21 (back outer layer 22) is folded back towards the ventral side in the thickness direction, but this folding back is not always necessary. Alternatively, a portion of the inner layer 23 may be folded back at the front end (rear end) of the outer component 20 along its length.

[0083] The waist elastic members 24 and 25 and the hip elastic member 26 are elastic members that stretch and contract in the lateral direction, and examples include linear rubber, etc. Figure 2 As shown, waist elastic members 24 and 25 overlap with the side joint 2 in the longitudinal direction. In the following description, the waist elastic member located on the ventral side 1A is also referred to as the ventral waist elastic member 24, and the waist elastic member 25 located on the dorsal side 1C is also referred to as the dorsal waist elastic member 25. The hip elastic member 26 is located on the lower crotch side (lower side in the vertical direction) of the side joint 2 in the longitudinal direction. In this embodiment, there are two hip elastic members 26, but this number is not particularly limited.

[0084] Furthermore, the waist elastic members 24 and 25 and the hip elastic member 26 are arranged vertically between the inner layer 23 and the abdominal outer layer 21 or the back outer layer 22 in the underwear-like configuration, and are fixed in an extended state along the left and right directions. Through the left and right stretching force exhibited by the waist elastic members 24 and 25 and the hip elastic member 26, the outer garment member 20 conforms to the wearer's waist and hips.

[0085] exist Figure 2 In the unfolded state shown, the portion of the outer component 2 that narrows to the left and right from the center in the length direction is where the diaper 1 is set up. Figure 1In that panty-like configuration, a pair of leg openings LH are formed. This narrowed portion is formed by cutting the outer fitting member 20 such that the width in the left-right direction of the central portion in the length direction is narrower than the width in the left-right direction of the two ends in the length direction. Hereinafter, this portion with narrowed width in the left-right direction is also referred to as the "leg opening LHC". In this embodiment, the leg opening LHC is formed by a continuous curve in the length direction from the abdominal side 1A to the back side 1C, such as... Figure 2 As shown, the width of the outer member 20 in the left-right direction is narrowest at a position forward of the central position CL in the length direction. Therefore, when the wearer moves their legs forward while wearing the underwear-type diaper 1 (for example, when walking), the leg circumference LHC is less likely to interfere with the leg movement.

[0086] <Regarding the fit of the absorbent body 10>

[0087] As described above, in the diaper 1 of this embodiment, the absorbent body 10 deforms and protrudes towards the skin when worn, thereby improving the fit of the wearer's crotch area. Figure 5A and 5B This is a diagram illustrating the convex deformation of the absorbent body 10. Figure 5A This is a schematic cross-sectional view of the absorbent body 10 in its elongated state. Figure 5B This is a schematic cross-sectional view of the absorbent body 10 during convex deformation.

[0088] Before wearing diaper 1, the absorbent body 10 is as follows: Figure 5A The approximate planar shape is shown. In this state, a crotch elastic member 40 (crotch elastic region ER) that is elongated in the longitudinal direction is provided in the central portion (central region CR) of the non-skin side in the thickness direction compared to the absorbent core 11 and in the left-right direction. When the diaper 1 is worn, the crotch elastic member 40 (crotch elastic region ER), whose elongated state is released, contracts in the longitudinal direction, thereby, as Figure 5B As shown, the force exerted pushes the central region CR of the absorbent core 11 from the non-skin side towards the skin side. On the other hand, in the two side regions SR of the absorbent core 11, since there is no stretching force generated by the elastic member, no force exerted pushes the two side regions SR towards the skin side. As a result, the central portion (central region CR) of the absorbent core 11 (absorbent body 10) in the left-right direction is pushed towards the skin side, deforming into a convex shape in cross-sectional view. As a result, the convexly deformed absorbent body 10 easily fits against the wearer's excretory opening (urine opening or vaginal opening, etc.) at the crotch area.

[0089] When wearing an underwear-type diaper 1 that has a crotch elastic member 40 and an absorbent body 10 with a central deformable area CR, after the wearer's legs pass through a pair of leg openings LH, the absorbent body 10 is pulled up towards the crotch and fitted to it by pulling the outer member 20 upward. At this time, depending on the shape of the outer member 20, specifically, depending on the shape of the leg openings LH (leg circumference LHC), the absorbent body 10 may not be pulled up well, resulting in a poor fit.

[0090] Figure 6A and Figure 6B This is a diagram illustrating the action when wearing the comparative example of underwear-type diapers 5. Figure 6A This is a schematic top view of the underwear-type diaper 5 in its unfolded and extended state. Figure 6B This diagram illustrates the wearing action of the panty-type diaper 5. The comparative example panty-type diaper 5 (hereinafter also referred to as "diaper 5") has a structure substantially the same as the diaper 1 of this embodiment, including an absorbent body 10 and an outer fitting 20, with a crotch elastic member 40 provided on the non-skin side of the absorbent body 10. On the other hand, as... Figure 6A As shown, in diaper 5, a portion of the leg opening portion LHC overlaps with the absorbent body 10. In other words, in the left-right direction, the innermost end of the leg opening portion LHC (i.e., the narrowest part of the outer member 20) is located inside the outer end 10es of the absorbent body 10. The rest of the structure is the same as diaper 1.

[0091] When wearing diaper 5, if you want to grab the two sides of the outer garment component 20 and pull it upwards, it will act along the periphery of the leg circumference LHC. Figure 6B As indicated by arrow F1, the tension pulls the absorbent body 10 upwards at an angle. At this time, in the diaper 5, since the inner end of the leg opening LHC is located further inwards than the outer end 10es in the left-right direction of the absorbent body 10, as... Figure 6B As shown, the two ends of the absorbent body 10 in the left and right directions protrude outwards from the leg circumference LHC, making it difficult to transmit the upward pulling force. Therefore, the absorbent body 10 is difficult to lift sufficiently towards the wearer's crotch, and the convexly deformed absorbent body 10 is difficult to fit snugly against the excretion opening. In addition, since the side regions SR of the absorbent body 10 are separated from the wearer's groin area, gaps or positional displacement are easily created, which can easily lead to side leakage of excrement or cause discomfort to the wearer.

[0092] In contrast, in the diaper 1 of this embodiment, by adjusting the relationship between the absorbent body 10 and the leg opening LHC of the outer member 20, the fit of the absorbent body 10 in the crotch area is improved when wearing it. Figure 7A and Figure 7BThis diagram illustrates the action of wearing the underwear-type diaper 1 of this embodiment. Figure 7A This is a schematic top view of diaper 1 in its unfolded and extended state. Figure 7B This is a diagram showing the action of putting on diaper 1.

[0093] When wearing diaper 1, if you want to grab the two sides of the outer fitting 20 and pull it upwards, it will act along the periphery of the leg opening LHC, just like in the comparative example. Figure 7B The tension indicated by arrow F2 causes the absorbent body 10 to be pulled diagonally upwards. In the diaper 1, since the leg opening LHC is located further outwards than the outermost end 10es of the absorbent body 10 in the left-right direction, as... Figure 7B As shown, the two ends of the absorbent body 10 in the left and right directions can be easily pulled up by the outer fitting 20. Therefore, the absorbent body 10 as a whole can be easily pulled up towards the wearer's skin and fits easily against the crotch area. In addition, since it is difficult to create a gap between the two side areas SR of the absorbent body 10 and the wearer's groin area, it is also difficult to cause side leakage of excrement.

[0094] Furthermore, the outer casing 20 of the diaper 1 lacks an elastic member that extends across the central position CL in the length direction and stretches along the periphery of the leg opening LHC. For example, if an elastic member such as a continuous leg pleat elastic member is provided to flare the periphery of the leg opening LHC of the outer casing 20, this elastic member easily exerts a stretching force along the periphery of the leg opening LHC. In this case, Figure 7B If the force applied to the two ends of the absorbent body 10 in the left and right directions (the force indicated by arrow F2) is too strong, it may cause the wearer's groin area to feel uncoordinated or cause the absorbent body 10 (absorbent core 11) to deform and collapse.

[0095] In contrast, in diaper 1, when the outer fitting 20 is pulled up, the elastic force does not act along the periphery of the leg opening LHC, thus preventing the two ends of the absorbent body 10 from being pulled up excessively in the left-right direction. Therefore, it is possible to prevent the two ends of the absorbent body 10 or the leg opening LHC from sinking into the wearer's groin or the absorbent body 10 from deforming and collapsing.

[0096] In addition, such as Figure 2As shown, in the length direction of the diaper 1, the length L40f of the crotch elastic member 40 located forward of the central position CL is longer than the length L40b of the crotch elastic member 40 located backward of the central position CL (L40f > L40b). That is, in the absorbent body 10 (absorbent core 11) of the diaper 1, the stretching force generated by the crotch elastic member 40 is more easily applied at the position forward of the rearward direction. Therefore, at the front side in the length direction, it is easier to generate... Figure 5B The convex deformation of the absorbent body 10 shown means that when the diaper 1 is worn, the central region CR of the absorbent body 10, which is deformed laterally towards the skin, can easily fit with the wearer's urination opening or vaginal opening.

[0097] In the diaper 1 of this embodiment, by having such a structure, the fit of the crotch area when worn can be improved.

[0098] Additionally, the outer garment component 20 of the diaper 1 has an inner layer 23 (equivalent to the first piece) that is continuous from one end (e.g., the ventral side) to the other end (e.g., the dorsal side) in the longitudinal direction, and a ventral outer layer 21 and a dorsal outer layer 22 (both equivalent to the second piece) that are stacked on the non-skin side of the inner layer 23 (see reference). Figure 2 and Figure 3 The ventral outer layer 21 is mainly composed of the ventral portion 1A stacked on the inner layer 23, and the dorsal outer layer 22 is mainly composed of the dorsal portion 1C stacked on the inner layer 23. In the length direction, no sheet member is provided in the central part between the ventral outer layer 21 and the dorsal outer layer 22 that is stacked on the inner layer 23.

[0099] The portion of the side joint 2 of the outer component 20 of the diaper 1 that connects the ventral side 1A and the dorsal side 1C is as follows: Figure 7B As shown, this is the part that is grasped and pulled upwards by hand when wearing diaper 1. Therefore, near the two ends in the length direction (ventral side 1A, dorsal side 1C), strength is ensured by making the outer member 20 a layered structure of two or more layers, which easily prevents diaper 1 from tearing. On the other hand, near the central part in the length direction (crotch 1B) that abuts against the wearer's crotch when wearing diaper 1, the outer member 20 is made into a single layer structure. Compared with the two ends, the rigidity of the outer member 20 is lower, thus easily ensuring the softness of the crotch. As a result, when the outer member 20 is pulled up, the shape of the convexly deformable absorbent body 10 is not easily deformed, and it is easy to fit the wearer's crotch. In addition, since the leg circumference LHC in the crotch of the outer member 20 has sufficient softness, it is difficult for the wearer to feel uncomfortable even when the leg circumference LHC comes into contact with the wearer's groin when wearing diaper 1.

[0100] Figure 8 This is a top view used to illustrate the specific structure of diaper 1. Figure 8 and Figure 2 Similarly, diaper 1 represents the unfolded and stretched state. Figure 8 In the outer garment member 20, the portion of the inner layer 23 (first layer) that is not overlapped with the outer ventral layer 21 (second layer) is the front single-layer area Sf, located forward of the central position CL along the length of the outer garment member 20. Similarly, the portion of the inner layer 23 (first layer) that is not overlapped with the outer ventral layer 21 (second layer) is the rear single-layer area Sb, located backward of the central position CL along the length of the outer garment member 20. In diaper 1, the area of ​​the front single-layer area Sf is larger than the area of ​​the rear single-layer area Sb (Sf > Sb). That is, in the outer garment member 20 of diaper 1, the single-layer portion in the front area of ​​the crotch is wider than the rear area, making it easier to ensure softness in the front. Therefore, when wearing diaper 1, the outer garment member 20 can easily deform softly in the area that comes into contact with the wearer's excretory opening (urination opening or vaginal opening, etc.), making it less likely to cause discomfort to the wearer. In addition, the convex deformation of the absorbent body 10 is not easily obstructed near the discharge port, which can improve the fit of the absorbent body 10.

[0101] Additionally, in the outer component 20 of the diaper 1, waist elastic members 24 and 25 and hip elastic members 26 that extend and contract in the left-right direction are provided between the inner layer 23 and the outer layers 21 and 22 in the thickness direction. In the diaper 1, the waist elastic members 24 and 25 and the hip elastic members 26 are all arranged in a straight line along the left-right direction (see reference). Figure 8 Therefore, these elastic members 24 to 26 are collectively referred to as "left-right direction elastic members" below. Moreover, in this embodiment, the shortest distance Lef from the central position CL to the left-right direction elastic member at a position in the length direction that is forward of the central position CL is longer than the shortest distance Leb from the central position CL to the left-right direction elastic member at a position in the length direction that is backward of the central position CL (Lef > Leb).

[0102] exist Figure 8In the diaper 1, the length from the central position CL to the rearmost (lower in the vertical direction) abdominal waist elastic member 24 is the distance Lef. Similarly, the length from the central position CL to the frontmost (lower in the vertical direction) hip elastic member 26 is the distance Leb. ​​The area in the outer garment member 20 of the diaper 1 with the left-right elastic members (24-26), except for the sheet members with at least two layers, has higher rigidity than other areas due to the rigidity of the elastic members themselves. Therefore, the longer the distance from the central position CL to the location with the left-right elastic members in the length direction, the longer the area with low rigidity can be extended. In this embodiment, since the distance Lef at the front is longer than the distance Leb at the rear, the area with low rigidity is wider in the length direction of the outer garment member 20, located further forward than the central position CL. This ensures sufficient softness of the outer garment member 20 near the excretion opening located in front of the wearer's crotch. Furthermore, the convex deformation of the absorbent body 10 is less obstructed near the excretion opening, improving fit.

[0103] Furthermore, the outer fitting 20 of the diaper 1 does not have an elastic member that is inclined relative to the length direction (left-right direction). That is, the left-right elastic members (24-26) do not have an inclined portion. In existing diapers, sometimes a leg elastic member that is inclined along the periphery of the leg opening LHC is provided, or a portion of the hip elastic member 26 is bent along the leg opening LHC. In this case, as Figure 7B As shown, when the diaper is pulled up, the elastic member at an angle can exert excessive force in the angled direction due to its stretching force, potentially causing the convex deformation of the absorbent body 10 to collapse. In contrast, in this embodiment, since no elastic member at an angle is provided, it is difficult to exert excessive force in the angled direction when the outer member 20 is pulled up while wearing the diaper 1, thus suppressing the collapse of the convexly deformed absorbent body 10. Therefore, it is easier to prevent a decrease in fit.

[0104] Furthermore, in diaper 1, the absorbent core 11 has a narrowed portion 11c in the central part along the length direction, which is narrower in the left-right direction than at both ends along the length direction (see reference). Figure 8(etc.). Moreover, it is preferable to set the longest distance between the periphery of the narrowed portion 11c in the left-right direction and the outer end 10es of the absorbent body 10 as Wi, and the shortest distance between the periphery of the leg circumference portion LHC and the outer end 10es of the absorbent body 10 as Wo, with distance Wi being longer than distance Wo (Wi > Wo). By maximizing the narrowing of the absorbent core 11 in the left-right direction (i.e., distance Wi), when wearing the diaper 1, the edge of the absorbent core 11 is less likely to interfere with the wearer's legs and groin, making it difficult for the wearer to feel the hardness of the absorbent core 11. On the other hand, by minimizing the length of the portion of the outer member 20 that protrudes outward in the left-right direction from the absorbent body 10 (i.e., distance Wo), when wearing the diaper 1, the area of ​​direct contact between the outer member 20 and the wearer's skin (groin) is reduced, making it less likely for the wearer to experience discomfort.

[0105] Furthermore, in diaper 1, the narrowest part of the width W20n in the left-right direction of the outer component 20 is located in the length direction, forward of the central position CL. In other words, at a predetermined position forward of the central position CL in the length direction, the interval (W20n) between the left and right leg circumference portions LHC, LHC is the narrowest (see reference). Figure 8 (etc.). By making the width W20n of the outer member 20 narrowest at the front part of the crotch area, when the wearer is wearing the diaper 1 and moves their legs forward while maintaining a sitting posture or walking, the edge of the outer member 20 (i.e., the periphery of the leg circumference LHC) is less likely to interfere with the movement of the legs. As a result, the discomfort in the crotch area can be reduced.

[0106] Furthermore, the narrowest part of the width W20n of the outer component 20 in the left-right direction is located in the area that overlaps with the lower crotch elastic component 40 in the length direction (see reference). Figure 8 (etc.). That is, the area of ​​the outer members 20 is minimized on both sides of the region where the elastic member 40 acts in the lateral direction. By minimizing the area of ​​the outer members 20 on both sides of the elastic member 40, the resistance of the absorbent body 10 when it deforms due to the contraction of the elastic member 40 is reduced, and the absorbent body 10 can easily and naturally deform into... Figure 5B That convex shape. Therefore, the fit of the absorbent body 10 can be further improved in the crotch area.

[0107] Figure 9 This is a top view illustrating the configuration of the body joint 70 that joins the absorbent body 10 and the outer fitting 20. In the diaper 1, the absorbent body 10 is joined to the outer fitting 20 via the body joint 70 formed by an adhesive such as a hot melt adhesive. The body joint 70 is located on the non-skin side of the absorbent body 10 or the skin side of the outer fitting 20. Figure 9The area indicated by the diagonal lines is formed by applying adhesive. In this embodiment, a body joint portion 70 is provided on the substantially entire absorbent body 10. That is, the absorbent body 10 and the outer member 20 are joined to each other on both sides in the left-right direction of the area overlapping with the crotch elastic member 40 in the length direction. In addition, in the body joint portion 70, it is not necessary to... Figure 9 The adhesive is applied evenly to the entire area shown by the diagonal lines. For example, the adhesive can also be applied in a spiral or Ω-shaped line.

[0108] In the left and right sides of the area where the elastic member 40 acts, if the absorbent body 10 and the outer member 20 are not joined, when wearing the diaper 1, the two ends of the absorbent body 10 in the left and right directions may float from the outer member 20 near the wearer's groin area, potentially causing discomfort and a sense of disharmony. In contrast, in this embodiment, the absorbent body 10 and the outer member 20 are firmly joined and integrated on both sides of the elastic member 40 in the left and right directions, making it difficult for the absorbent body 10 to float. Therefore, discomfort near the groin area when wearing the diaper 1 can be reduced.

[0109] Furthermore, in this embodiment, the width of the body joint 70 is approximately equal in the left and right directions along its entire length. Figure 9 In this structure, the widths W60f, W60b, and W60c of the main body joint 70 at the front end along the length direction, the rear end along the length direction, and the area of ​​the main body joint 70 overlapping with the crotch elastic member 40 along the length direction are all equal. With this structure, since the absorbent body 10 and the outer member 20 are uniformly joined as a whole, stress concentration is less likely to occur when the outer member 20 is pulled up while wearing the diaper 1, thus suppressing localized forces acting on the absorbent body 10 via the outer member 20. Therefore, the convex deformation of the absorbent body 10 is less likely to be hindered, easily improving the fit of the crotch area.

[0110] Furthermore, the absorbent body 10 of the diaper 1 does not have elastic members that stretch along the length direction at both ends in the left and right directions. Here, "elastic members that stretch along the length direction at both ends in the left and right directions" refers to an elastic member that functions as a "leg elastic member" that stretches around the wearer's legs when worn, and is different from the leak-proof elastic member 61 in this embodiment (see Figure 4). In existing absorbent bodies 10 mounted on underwear-type diapers, the technique of improving the fit around the wearer's legs by providing "leg elastic members" on both sides of the absorbent body 10 in the left and right directions is widely known. However, in the diaper 1 of this embodiment, if elastic members equivalent to "leg elastic members" that stretch along the length direction are provided on the non-skin side in the thickness direction of the absorbent core 11 and on both sides of the absorbent body 10 in the left and right directions, it may hinder the convex deformation of the absorbent body 10.

[0111] As in Figure 5B As explained, in this embodiment, the absorbent body 10, through the stretching force generated by the crotch elastic member 40 acting in the central region CR, easily causes the absorbent core 11 to be pushed towards the skin, resulting in convex deformation. Conversely, if elastic members equivalent to leg-circumferential elastic members are provided on both sides of the crotch elastic member 40 in the left-right direction, due to the stretching force exhibited by these leg-circumferential elastic members, the absorbent core 11 may also be pushed towards the skin in the side regions SR, making it difficult to achieve convex deformation. Figure 5B Such convex deformation. Therefore, in this embodiment, by not providing leg elastic members that extend and retract along the length direction at both ends in the left and right directions, it is difficult for forces that contract along the length direction to act on the two side regions SR of the absorbent body 10. As a result, the effect of the stretching force generated by the crotch elastic member 40 is increased, and it is easy to make the absorbent body 10 completely convex.

[0112] Furthermore, on the outer casing 20 of the diaper 1, in the area overlapping with the crotch elastic member 40 in the longitudinal direction, there is no elastic member that extends and retracts in the lateral direction. On the outer casing 20 of the diaper 1, the aforementioned waist elastic members 24 and 25 and hip elastic member 26 (lateral elastic members) are provided as lateral elastic members, but they do not overlap with the crotch elastic member 40 in the longitudinal direction. If an elastic member equivalent to a lateral elastic member were provided in the area overlapping with the crotch elastic member 40 in the longitudinal direction, the longitudinal stretching force generated by the crotch elastic member 40 would interfere with the lateral stretching force generated by the lateral elastic member, potentially hindering the stretching and retraction of the crotch elastic member 40. In contrast, in this embodiment, since no lateral elastic member is provided in the area overlapping with the crotch elastic member 40 in the longitudinal direction, it is difficult to hinder the longitudinal stretching and retraction generated by the crotch elastic member 40. Therefore, the absorbent body 10 can be easily deformed completely.

[0113] Furthermore, when the diaper 1 is in an unfolded and extended state, it is preferable that there is no point where the straight line connecting the middle position of the side joint 2 located on one side of the length direction with the end of one side of the crotch elastic member 40 in the length direction with the shortest distance intersects with the periphery of the leg opening portion LHC. Similarly, it is preferable that there is no point where the straight line connecting the middle position of the side joint 2 located on the other side of the length direction with the end of the other side of the crotch elastic member 40 in the length direction with the shortest distance intersects with the periphery of the leg opening portion LHC.

[0114] exist Figure 8 In the case of the side joint 2 located on the front side in the length direction and on the right side in the left-right direction, the straight line Slf connecting the midpoint 20FC of the front end (upper end) 2et and the rear end (lower end) 2eb in the length direction and the point 45f of the crotch elastic member 40 located on the front end in the length direction and on the right side in the left-right direction does not intersect the periphery of the leg circumference LHC. Furthermore, in the case of the side joint 2 located on the rear side in the length direction and on the right side in the left-right direction, the straight line Slb connecting the midpoint 20BC of the front end (upper end) 2et and the rear end (lower end) 2eb in the length direction and the point 45b of the crotch elastic member 40 located on the rear end in the length direction and on the right side in the left-right direction does not intersect the periphery of the leg circumference LHC.

[0115] When wearing diaper 1, such as Figure 7BAs shown, an action is performed by grasping both sides of the outer fitting member 20 in the left-right direction and pulling it upwards. At this time, if the midpoints 20FC and 20BC of the side joint 2 are grasped, the force is easily transmitted along the straight line (Slf, Slb) connecting the midpoints 20FC and 20BC to the crotch elastic member 40 with the shortest distance. However, when this straight line intersects with the periphery of the leg opening portion LHC, the force acting along the straight line from the position of grasping the outer fitting member 20 (midpoints 20FC and 20BC) to the crotch elastic member 40 (45f, 45b) is interrupted by the leg opening portion LHC, making it difficult to transmit the force to pull up the diaper 1. That is, it may not be possible to efficiently pull up the absorbent body 10 via the outer fitting member 20.

[0116] In contrast, in the diaper 1 of this embodiment, the straight line (Slf, Slb) connecting the midpoints 20FC, 20BC and the crotch elastic member 40 with the shortest distance is not interrupted by the leg opening portion LHC. Therefore, the force for pulling up the diaper 1 can be easily transmitted along this straight line. Thus, the absorbent body 10 can be pulled up efficiently via the outer fitting member 20. As a result, the absorbent body 10 can be easily fitted to the wearer's crotch area.

[0117] ===Others===

[0118] The above embodiments are provided to facilitate understanding of the present invention, and are not intended to limit or explain the present invention. The present invention can be modified and improved without departing from its spirit, and the present invention naturally includes its equivalents.

[0119] Explanation of reference numerals in the attached figures

[0120] 1. Diapers (disposable diapers in underwear type, absorbent items in underwear type)

[0121] 5. Diapers (comparative example: disposable underwear-type diapers)

[0122] 1A Abdominal region, 1B Groin region, 1C Back region

[0123] 2-side joint,

[0124] 10 absorbent body, 10es end (outer end in left and right direction)

[0125] 11 absorbent core, 11c narrow section,

[0126] 12 top film, 13 negative film, 15 intermediate film,

[0127] 16 Side panels, 17 Elastic component covering sheet, 18 Core wrapping sheet,

[0128] 19. Leg pleats elastic components

[0129] 20 exterior components

[0130] 21. Ventral outer layer film, 22. Dorsal outer layer film, 23. Inner layer film,

[0131] 24 Waist elastic components (abdominal and lateral elastic components)

[0132] 25 Waist elastic component (back and left / right elastic components)

[0133] 26. Elastic component in the hip (elastic component in the left-right direction)

[0134] 31 cover lens, 32 cover lens,

[0135] 40. Crotch elastic component

[0136] 41-45 Crotch Elastic Components

[0137] 60 Leak-proof wall section

[0138] 61. Leak-proof wall elastic components

[0139] 70 Body joint,

[0140] BH waist opening, LH leg opening

[0141] LHC leg circumference,

[0142] CL central position (length direction)

[0143] ER crotch elastic area

[0144] CR central region, SR bilateral regions.

Claims

1. An absorbent underwear-type garment, which, in its unfolded and extended state, has intersecting length directions, left-right directions, and thickness directions. The absorbent underwear-type garment has the following characteristics: An absorbent body, possessing an absorbent core; and The external component is positioned on the non-skin side compared to the absorbent body. On both sides of the outer component in the left-right direction, at the center of the length direction, there is a pair of leg-shaped portions whose width in the left-right direction is narrower than that at both ends in the length direction. Its features are, The absorbent underwear-type garment has a crotch elastic member positioned on the non-skin side of the absorbent core and stretching along the length direction. In the length direction, the length of the crotch elastic member located forward of the central position is longer than the length of the crotch elastic member located rearward of the central position. In the left-right direction, the entire periphery of the leg circumference is located further outward than the outer end of the absorbent body. The outer component does not have a leg circumference elastic member that spans the central position in the length direction and extends and retracts along the periphery of the leg circumference.

2. The absorbent underwear-type garment according to claim 1, characterized in that, The external component has: The first piece is continuous from one side to the other along the length direction; and The second piece is stacked on top of the first piece at both ends along the length direction, but not stacked on top of the first piece at the center along the length direction.

3. The absorbent underwear-type garment according to claim 2, characterized in that, The area of ​​the portion of the outer component located forward of the center position on the first piece that does not overlap with the second piece is larger than the area of ​​the portion of the outer component located rearward of the center position on the first piece that does not overlap with the second piece.

4. The absorbent underwear-type garment according to claim 2, characterized in that, On the outer component, between the thickness direction of the first piece and the second piece, there is a left-right elastic member arranged in a straight line along the left-right direction. The shortest distance from the central position to the left-right elastic member at a position forward of the central position in the length direction is longer than the shortest distance from the central position to the left-right elastic member at a position backward of the central position.

5. The absorbent underwear-type garment according to claim 4, characterized in that, The external component does not have an elastic member that is configured to be obliquely inclined relative to the length direction.

6. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, The absorbent core has a narrowed portion at its central portion along the longitudinal direction, where the width in the left-right direction is narrower than that at both ends along the longitudinal direction. In the left-right direction, the maximum value of the length between the outer end of the absorbent body and the periphery of the narrowing portion is greater than the minimum value of the length between the periphery of the leg circumference and the outer end of the absorbent body.

7. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, The narrowest part of the outer component in the left-right direction is located in the length direction, further forward than the center position.

8. The absorbent underwear-type article according to claim 7, characterized in that, The narrowest portion of the outer component in the left-right direction is located in the area that overlaps with the crotch elastic component in the length direction.

9. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, On both sides of the region overlapping the crotch elastic member in the longitudinal direction in the left-right direction, there are body joints that connect the absorbent body and the outer component.

10. The absorbent underwear-type article according to claim 9, characterized in that, The width of the body joint in the left-right direction in the region overlapping with the crotch elastic member in the length direction is equal to the width of the body joint in the left-right direction at both ends of the absorbent body in the length direction.

11. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, The absorbent body does not have leg-like elastic members that extend and retract along the length direction at both ends in the left-right direction.

12. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, The outer component does not have an elastic component that extends or retracts in the left-right direction in the area where it overlaps with the lower crotch elastic component in the length direction.

13. The absorbent underwear-type article according to any one of claims 1 to 5, characterized in that, The external component has a pair of side joints at both ends in the left-right direction, which engage one end and the other end in the length direction. The absorbent underwear-type item in its unfolded and stretched state The straight line connecting the center position between the end of one side of the side joint in the length direction and the end of the other side in the length direction of the crotch elastic member with the shortest distance does not have a point intersecting the periphery of the leg circumference. The straight line connecting the central position between the end of one side of the side joint on the other side of the length direction and the end of the other side of the crotch elastic member with the shortest distance does not have a point of intersection with the periphery of the leg circumference.

Images