Underpants-type absorbent article

Abstract

The utility model provides an underpants type absorptive article. The purpose of the present invention is to improve the adhesion between a crotch section and a groin section in an underpants-type absorbent article which is provided with a crotch elastic member and a leakage-proof wall elastic member and which can also be used as a belt type. An underpants-type absorbent article having an absorbent body, a waist member, an engagement member, and a waist elastic member, the article having a pair of separation parts for separating the waist member from the front and back, leakage-proof wall elastic members on both sides of the absorbent body, and a crotch elastic member on the non-skin side of the absorbent core, in the longitudinal direction, the front side end of the leakproof wall elastic member is located in front of the rearmost waist elastic member overlapping the separation portion in the front waist portion, and the front side end of the crotch elastic member is located in rear of the rearmost waist elastic member. The rear end of the crotch elastic member is positioned further to the rear than the center position.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of underpants type absorbent articles. BACKGROUND

[0002] A disposable diaper or the like absorbent article that can be used as a belt type (open type) by separating a part of a waist member formed in an underpants type (shorts type) is known in the past. As such an underpants type absorbent article, there is an underpants type absorbent article provided with a crotch elastic member that stretches and contracts along the length direction of an absorbent main body in a crotch portion, and a leakage barrier wall elastic member that makes a leakage barrier wall portion stand up to the skin side in both side portions of the absorbent main body. For example, an underpants type absorbent article is disclosed in Patent Literature 1, in which the upper end of the crotch elastic member and the upper end of the leakage barrier wall elastic member are located in the upper direction at a position higher than the lower end of a pair of side joints that join a front waist portion and a rear waist portion in a ring shape. In addition, an underpants type absorbent article is disclosed in Patent Literature 2, in which the upper end of the crotch elastic member and the upper end of the leakage barrier wall elastic member are located in the upper direction at a position lower than the lower end of a pair of side joints that join a front waist portion and a rear waist portion in a ring shape.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: International Publication No. 2022 / 144990

[0006] Patent Literature 2: International Publication No. 2023 / 276530 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] In the case of Patent Literature 1, when wearing after separating the waist member front and rear to become a belt type (open type), at the time of performing the operation of pulling the front body panel to the obliquely lateral side, the pulling force is easily transmitted to the crotch elastic member and the leakage barrier wall elastic member, both are strongly pulled to the front side (ventral side), thereby there is a concern that the absorbent main body is shifted to the front side or the abdomen is compressed to make the fit worse. On the other hand, in the case of Patent Literature 2, the force of pulling the front body panel is difficult to transmit to the crotch elastic member and the leakage barrier wall elastic member, there is a concern that a gap is generated between the absorbent main body and the wearer's body or excretion leakage is generated at the crotch portion, the groin portion.

[0009] The utility model discloses a pair of pants type absorbent article that can be used as a belt type, and the purpose is to improve the fit of the crotch and the groin.

[0010] Solution for solving the problem

[0011] The utility model discloses a pair of pants type absorbent article that can be used as a belt type, and the purpose is to improve the fit of the crotch and the groin.

[0012] As described above, when the waist member, which is divided into front and back by tearing the separation portion (tearable line) while being worn, is pulled up to the obliquely upper side, the force of pulling up is preferentially applied to the leakage barrier elastic member via the waist elastic member, and thus the leakage barrier elastic member is easily lifted up. Therefore, the both side portions (leakage barrier portions) of the absorbent main body are easily attached to the groin portions, and the side leakage of excrements can be suppressed. In addition, the force of pulling up the waist member to the obliquely upper side is not excessively applied to the crotch elastic member, and the absorbent main body is not easily pressed against the lower abdomen, and thus the feeling of discomfort is not easily caused. On the other hand, since the crotch elastic member is stretched and contracted in the front and back directions across the crotch portion, the attachment of the absorbent main body at the crotch portion can be reliably ensured. Thus, the attachment at the crotch portion and the groin portion can be improved.

[0013] Preferably, the technical solution 2 is that, in the stretched state, the leakage barrier elastic member is arranged at a position outward of the outermost end in the left-right direction of the absorbent core.

[0014] As described above, by arranging the leakage barrier elastic member at a region having a lower stiffness outward of the absorbent core in the left-right direction, the stretchability of the leakage barrier elastic member is not easily disturbed by the absorbent core, and the leakage barrier portion is easily deformed. Thus, when the absorbent article is worn, the leakage barrier portion is easily erected toward the skin side, and is more easily attached to the groin portion of the wearer.

[0015] Preferably, the technical solution 3 is that the pant-type absorbent article has a pair of leakage barrier portions which are erected toward the skin side based on the stretchability of the leakage barrier elastic member at both side portions in the left-right direction of the absorbent main body, and has leakage barrier end fixing portions which fix both end portions in the longitudinal direction of the leakage barrier portion to the skin side surface of the absorbent main body, and in the stretched state, the leakage barrier end fixing portions are arranged at positions outward of the outermost end in the left-right direction of the absorbent core.

[0016] As described above, by arranging the end fixing portion which is the starting point of the erection of the leakage barrier portion when worn at a region outward of the absorbent core and having a lower stiffness, the action of the erection of the leakage barrier portion is not easily disturbed. Thus, when the absorbent article is worn, the leakage barrier portion is easily erected toward the skin side, and is more easily attached to the groin portion of the wearer.

[0017] Preferably, the technical solution 4 is that at least a part of the leakage barrier end fixing portion provided at the front side end portion in the longitudinal direction of the leakage barrier portion is located at a position forward of the last side waist elastic member among the plurality of waist elastic members arranged in the front waist portion overlapping with the separation portion in the longitudinal direction.

[0018] As described above, at least a part of the front end fixing portion is pressed from the non-skin side to the skin side by the elastic force of the waist elastic member when worn. Therefore, in the front end portion of the leakage preventing wall portion, the front end fixing portion easily adheres to the skin (abdomen) of the wearer in a flat surface shape, and is less likely to be displaced in position or to have a gap with the skin when the leakage preventing wall portion is erected. Thus, the fit of the leakage preventing wall portion is higher in the groin portion of the wearer, and side leakage of urine or the like is less likely to occur in the region (ventral side) close to the discharge opening.

[0019] Preferably, the technical solution 5 is that, in the left-right direction, the leakage preventing wall end fixing portion and the leakage preventing wall elastic member are separated by a predetermined distance.

[0020] As described above, the interval between the leakage preventing wall elastic member and the end fixing portion functions as a raw edge, and thus the erected top end of the leakage preventing wall portion is less likely to be stiff. Therefore, when the absorbent article is worn, the skin touch of the erected top end of the leakage preventing wall portion at the groin portion of the wearer is soft, and the wearer is less likely to feel discomfort or a sense of incongruity.

[0021] Preferably, the technical solution 6 is that, in the left-right direction, the innermost end of the outline of the waist member is located at a position outward of the outermost end of the absorbent core, and, in the length direction, the position where the width of the waist member in the left-right direction is narrowest is located at a position forward of the central position of the panty-type absorbent article.

[0022] As described above, when the waist member is pulled upward and obliquely at the time of wearing, the absorbent core is in a state of being covered by the waist member at all times, and is less likely to be visually recognized from the outside. In addition, since the width of the waist member is narrowest at a position forward of the central position in the length direction, wrinkles formed on the surface of the waist member are less likely to be noticeable. Therefore, the fact that the absorbent article is being worn is less likely to be recognized from the outside, and the psychological burden of the wearer who does not want to be seen wearing the absorbent article can be alleviated.

[0023] Preferably, the technical solution 7 is that the waist member has a first portion located at a central portion in the length direction, and a second portion located at a position outward of the first portion in the length direction, and the number of sheet members stacked in the thickness direction at the second portion is greater than the number of sheet members stacked in the thickness direction at the first portion.

[0024] As described above, by increasing the number of sheet members stacked at the second portion, which is a portion that is pulled upward and obliquely at the time of wearing, more than at the first portion, the strength is increased, and the waist member is less likely to be torn when it is pulled upward and obliquely.

[0025] Preferably, in Technical Solution 8, the first portion overlaps the central position of the panty-type absorbent article in the length direction, and the second portion overlaps the separation portion in the length direction.

[0026] As above, the strength of the second portion in the waist member, which is located near the tear line (separation portion), can be increased, and the waist member is more easily prevented from tearing when the waist member is pulled obliquely upward to separate the front and back when putting on the absorbent article. On the other hand, in the first portion in the crotch of the waist member, which is located in the crotch when wearing the absorbent article, the stiffness is not excessively high and the softness is easily maintained, and thus the fit at the crotch portion is improved.

[0027] Preferably, in Technical Solution 9, the panty-type absorbent article has a pair of side joints that join the front waist member and the back waist member to each other at both ends in the left-right direction, and in a region on the front side of the central position of the panty-type absorbent article in the length direction, the junction of the first portion and the second portion is located on the rear side of the rear side end of the side joint, and in a region on the rear side of the central position of the panty-type absorbent article in the length direction, the junction of the first portion and the second portion is located on the front side of the front side end of the side joint.

[0028] As above, the second portion, which has a larger number of laminated sheets, is formed in all portions in which a strong force is easily applied when the waist member is pulled obliquely upward during the putting-on action, and the waist member is less likely to tear. In addition, in the first portion on the rear side (front side) of the front side end (rear side end) of the side joint, the number of laminated sheets of the sheet member that constitutes the waist member is small and the stiffness is low, and thus the waist member is more easily caused to fit to the wearer's crotch portion according to the unevenness of the body when worn.

[0029] Preferably, in Technical Solution 10, the waist member has a high compression portion in which the sheet member laminated in the second portion is compressed in the thickness direction.

[0030] As above, by providing the high compression portion, the stiffness of the laminated portion (second portion) of the waist member can be further increased, and the waist member is less likely to tear even when the waist member is pulled obliquely upward during the putting-on action. In addition, since the waist member is easily maintained in a planar shape at the portion where the high compression portion is provided, the waist member is able to be closely fitted to the wearer's waist in a planar form when the absorbent article is worn.

[0031] Preferably, in Technical Solution 11, both end portions of the crotch elastic member are provided at positions overlapping the second portion in the length direction.

[0032] As described above, by arranging both end portions of the crotch elastic member in the second portion having high rigidity, the crotch elastic member is easily and stably supported. Therefore, when the absorbent article is worn, the absorbent main body is easily brought into close contact with the wearer's crotch portion by being lifted toward the skin side of the wearer at the portion provided with the crotch elastic member. In addition, by firmly supporting the absorbent main body with the crotch elastic member, even if the weight of the absorbent main body increases due to absorption of excretions, the absorbent main body is not easily sagged.

[0033] Preferably, the technical solution 12 is that, in the length direction, the front side end of the portion where the stretchability of the leakage barrier wall elastic member acts is located at a position more toward the back side than the back side end of the engaging member.

[0034] As described above, in the state of being worn, the case where the leakage barrier wall elastic member is pressed in the thickness direction by the engaging member when the engaging member is engaged with the waist member is suppressed, and the leakage barrier wall portion is easily erected toward the skin side. In addition, since the stretchability of the leakage barrier wall elastic member is not easily hindered, even if the wearer moves the body in the state of wearing the absorbent article, the leakage barrier wall portion easily follows the movement of the body, and good fit is easily achieved.

[0035] Preferably, the technical solution 13 is that the panty-type absorbent article has a pair of side joint portions that join the front waist portion and the back waist portion to each other at both ends in the left-right direction, the engaging member has a one-side engaging member provided on one side in the left-right direction and a other-side engaging member provided on the other side in the left-right direction, the side joint portion has a one-side side joint portion provided on one side in the left-right direction and a other-side side joint portion provided on the other side in the left-right direction, the one-side engaging member is fixed to the waist member at the one-side side joint portion, the other-side engaging member is fixed to the waist member at the other-side side joint portion, and in the elongated state, the length from the other-side end of the one-side engaging member to the other-side end of the one-side side joint portion and the length from the one-side end of the other-side engaging member to the one-side end of the other-side side joint portion are different in the left-right direction.

[0036] As described above, the absorbent article in the panty-type state is asymmetric with respect to the center in the left-right direction, and thus, it is easy for the wearer or the like to recognize that the absorbent article is not a general panty-type absorbent article but an absorbent article that can also be worn in a belt-type state, and it is preferable to be worn in different orders on one side and the other side in the left-right direction.

[0037] Preferably, in the extended state, the length from the center of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the left and right direction of the right and right direction of the left and right direction of the left and right direction of the right and right direction of the left and right direction of the right and right direction of the right and right side ...

[0038] As described above, it is easy for wearers to recognize that the absorbent item has an asymmetrical shape relative to the center in the left-right direction. Furthermore, it is easy for wearers to recognize that, preferably, the absorbent item is worn in a different order on one side and the other side in the left-right direction.

[0039] Preferably, in the extended state, the area of ​​the one-sided engaging member is different from the area of ​​the other-sided engaging member.

[0040] As mentioned above, wearers can easily recognize that the absorbent material has an asymmetrical shape relative to the center in the left-right direction. Therefore, it is easy for wearers to recognize that, preferably, the absorbent material is worn in a different order on one side and the other side in the left-right direction.

[0041] Preferably, in the extended state, the distance from the center of the crotch elastic member to the other end of the one-sided engaging member in the left-right direction is different from the distance from the center of the crotch elastic member to one side of the other-sided engaging member.

[0042] As described above, it is easy for wearers to recognize that the absorbent item has an asymmetrical shape relative to the center in the left-right direction. Furthermore, it is easy for wearers to recognize that, preferably, the absorbent item is worn in a different order on one side and the other side in the left-right direction.

[0043] Effects of the utility model

[0044] According to this utility model, in an absorbent underwear-type garment that has a crotch elastic member and a leak-proof elastic member and can also be used as a belt, the fit of the crotch and groin areas can be improved. Attached Figure Description

[0045] Figure 1 This is a rough 3D diagram of sanitary napkin 1.

[0046] Figure 2 This is a top view of a sanitary napkin 1 in its unfolded and elongated state, viewed from the thickness direction.

[0047] Figure 3 yes Figure 2 A schematic diagram of the AA cross-section.

[0048] Figure 4 is a plan view and a sectional view of the absorbent main body 10 in an elongated state.

[0049] Figure 5A and Figure 5B is a view illustrating an action of separating the waist member 20 of the sanitary napkin 1 front and back.

[0050] Figure 6 is a view illustrating an example of a wearing action of the sanitary napkin 1.

[0051] Figure 7 is a view illustrating a state of the sanitary napkin 1 at the time of the wearing action.

[0052] Figure 8 is a plan view indicating an example in a case where the sanitary napkin 1 is provided with a shape that is asymmetric with respect to the center C-C in the left-right direction.

[0053] Figure 9 is a view illustrating an example of a structure of the tearable line 25 (separation portion 25).

[0054] BRIEF DESCRIPTION OF THE DRAWINGS

[0055] 1, sanitary napkin (panty-type absorbent article); la, waist opening; lb, leg opening; 10, absorbent main body; 11, absorbent core; 12, topsheet; 13, backsheet; 13a, liquid-impermeable sheet; 13b, hydrophobic sheet; 18, core wrap sheet; 20, waist member; 20f, front waist portion; 20b, back waist portion; 21, non-skin side sheet; 22, skin side sheet; 23, skin side sheet; 25, tearable line (separation portion); 25fe, separation end; 25be, separation end; 25a, cutout portion; 25b, non-cutout portion; 26, waist elastic member; 26b, back end waist elastic member; 30, engaging member; 31, base sheet; 32, engaging portion; 35, base sheet fixing portion; 40, side joint portion; 40f, side joint portion (front side); 40b, side joint portion (back side); 50, crotch elastic member; 50ef, front side end; 50eb, back side end; 60, leakage barrier portion; 61, leakage barrier elastic member; 61ef, front side end; 66, end fixing portion (leakage barrier end fixing portion); 66f, front side end fixing portion; 66b, back side end fixing portion; 70, high density portion; 91, high compression portion; CL, center position; FL, first portion; ML, second portion. DETAILED DESCRIPTION

[0056] ==Embodiment==

[0057] As an example of the panty-type (shorts-type) absorbent article of the embodiment of the present application, a panty-type (shorts-type) sanitary napkin 1 (hereinafter also simply referred to as "sanitary napkin 1") is described. Further, in the panty-type (shorts-type) absorbent article, a panty-type (shorts-type) diaper, a panty-type (shorts-type) absorbent pad, and the like are also included.

[0058] <Basic Configuration of Sanitary Napkin 1>

[0059] Figure 1 is a perspective view of the sanitary napkin 1 of the embodiment. Figure 2 is a plan view of the sanitary napkin 1 in an unfolded and elongated state as viewed in the thickness direction. Figure 3 is a schematic view of an A-A cross section of Figure 2 . Further, in the cross section at the A-A position of Figure 2 , the side joint portion 40 and the separation portion 25 described later should not be shown, but in Figure 3 , the positions of both are shown for the purpose of description.

[0060] The "elongated state" of the sanitary napkin 1 refers to a state in which the sanitary napkin 1 as a whole (product as a whole) is elongated without wrinkles by elongating each elastic member (for example, the crotch elastic member 50 described later, the waist elastic member 26, and the like) provided in the sanitary napkin 1, and specifically refers to a state in which each member (for example, the non-skin-side sheet 21, the skin-side sheet 22, 23, and the like described later) constituting the sanitary napkin 1 is elongated to a size that coincides with or is close to the size of the member alone.

[0061] As shown in Figure 1 , the sanitary napkin 1 has an "up-down direction", a "left-right direction", and a "front-rear direction" that are orthogonal to each other. In addition, as shown in Figure 3 , a "thickness direction" that is a direction in which each member is stacked is provided. One side in the up-down direction that becomes the waist side of the wearer in a state in which the sanitary napkin 1 is worn by the wearer is set as an "upper side", and one side that becomes the crotch side of the wearer is set as a "lower side". In addition, one side in the front-rear direction that becomes the abdominal side of the wearer at the time of wearing is set as a "front side", and one side that becomes the back side of the wearer is set as a "rear side". In addition, one side in the thickness direction that contacts the skin of the wearer in a state in which the sanitary napkin 1 is worn by the wearer is set as a "skin side", and the opposite side is set as a "non-skin side".

[0062] In addition, the sanitary napkin 1 has a "length direction" and a "left-right direction" that are orthogonal to each other in the unfolded state shown in Figure 2 . The "length direction" is a direction along the up-down direction of the panty-type, and the "left-right direction" is a direction along the left-right direction of the panty-type.

[0063] The sanitary napkin 1 of the present embodiment includes: an absorbent main body 10 that absorbs excreted liquid such as menstrual blood; a waist member 20 that is arranged in superimposition on the non-skin side of the absorbent main body 10 and is arranged on the wearer's waist when the sanitary napkin 1 is worn; and a fastening member 30 that is provided on both sides in the left-right direction of the waist member 20.

[0064] (Absorbent main body 10)

[0065] Figure 4 is a plan view and a sectional view of the absorbent main body 10 in an extended state. As shown in Figure 4 the absorbent main body 10 has a substantially rectangular shape in plan view with the length direction coinciding with the up-down direction of the sanitary napkin 1. The absorbent main body 10 has an absorbent core 11 along the length direction (up-down direction), a topsheet 12 arranged at a position on the skin side of the absorbent core 11, and a backsheet 13 arranged at a position on the non-skin side of the absorbent core 11. However, the absorbent main body 10 can have a sheet member other than the above-described sheet members. For example, the absorbent main body 10 can have a second sheet between the topsheet 12 and the absorbent core 11 in the thickness direction. In addition, the absorbent main body 10 is provided with a crotch elastic member 50 described later at a position on the non-skin side of the absorbent core 11.

[0066] The absorbent core 11 is a member that absorbs and retains liquid such as menstrual blood, and is formed of, for example, liquid-absorbing fibers such as pulp fibers mixed with superabsorbent polymers (SAP). In the present embodiment, the outer peripheral surface of the absorbent core 11 is covered with a liquid-permeable core wrap 18 composed of, for example, tissue paper or nonwoven fabric. However, the core wrap 18 is not necessarily provided.

[0067] The topsheet 12 is a liquid-permeable sheet member that can be in contact with the wearer's skin when worn, and is formed of, for example, a hydrophilic thermal-bonded nonwoven fabric, a spun-bond nonwoven fabric, or the like.

[0068] The backsheet 13 is formed in a double-layer structure having a liquid-impermeable sheet 13a for suppressing leakage of liquid such as menstrual blood absorbed by the absorbent core 11 to the outside, and a hydrophobic sheet 13b arranged on the non-skin side of the liquid-impermeable sheet 13a. As the liquid-impermeable sheet 13a, for example, a resin film or the like is used, and as the hydrophobic sheet 13b, for example, a nonwoven fabric having softness or the like is used.

[0069] In addition, a pair of leakage-preventing wall portions 60, 60 is provided on both side portions in the left-right direction of the absorbent main body 10. The leakage-preventing wall portion 60 is a portion corresponding to so-called three-dimensional gathers, and when the sanitary napkin 1 is worn, the leakage-preventing wall portion 60 stands up from both sides in the left-right direction of the absorbent main body 10 toward the skin side of the wearer, thereby suppressing leakage of excreted liquid such as menstrual blood to the outside of the absorbent main body 10. As shown in Figure 4As shown in the cross-sectional view, in the sanitary napkin 1, the hydrophobic sheet 13b of the backing sheet 13, which is configured to cover the absorbent core 11 from the non-skin side, is folded back towards the skin side on both sides in the left-right direction and bent at multiple points, thereby forming a pair of leak-proof wall portions 60, 60. A leak-proof wall elastic member 61 (e.g., elastic band) is installed on the leak-proof wall portion 60 in a state of elongation along the length direction. When wearing the sanitary napkin 1, based on the elasticity exhibited by the leak-proof wall elastic member 61, the leak-proof wall portion 60 stands upright towards the skin side and conforms to the wearer's groin area.

[0070] In addition, such as Figure 2-4 As shown, in the crotch portion of the absorbent body 10 of this embodiment, a plurality of crotch elastic members 50 are provided that extend and retract along the length direction (vertical direction). The crotch elastic members 50 are, for example, made of elastic bands and are arranged in a lengthwise (vertical direction) position on the non-skin side of the absorbent core 11. Figure 4 The position is between the liquid-impermeable sheet 13a and the hydrophobic sheet 13b. In the sanitary napkin 1 of this embodiment, five crotch elastic members 50 are provided at predetermined intervals in the left-right direction, but the number of crotch elastic members 50 can be adjusted appropriately. The elongation ratio of the crotch elastic members 50 is preferably about 1.4 to 3.3 times. Furthermore, the elongation ratio is expressed by dividing the length of the elastic member in the elongated state by the length of the elastic member in the natural state. By setting the elongation ratio of the crotch elastic members 50 to a relatively strong ratio in advance, the absorbent core 11 with high stiffness can be contracted from the non-skin side in the thickness direction and deformed convexly towards the skin side. When wearing the sanitary napkin 1, the absorbent body 10 can easily conform to the wearer's body. That is, by utilizing the elasticity exhibited by the crotch elastic members 50, the absorbent body 10 is lifted towards the wearer's skin side, so that the absorbent body 10 can easily seal tightly with the wearer's crotch area, making it less likely for menstrual blood and other excretory fluids to leak.

[0071] Furthermore, the absorbent body 10 is provided with a high-density portion 70 formed by compression processing, etc., of at least the absorbent core 11 and the top sheet 12 in the thickness direction. Figure 4 In the absorbent core 10, a pair of high-density sections 70 are provided in the left-right direction, which are formed into a curved (dot-line) shape by intermittently arranging multiple point-like compression portions along the length direction. In the absorbent body 10, the density of the portion with the high-density section 70 is higher than that of the other portions, and the absorbent core 11 can easily undergo three-dimensional bending deformation with the high-density section 70 as the bending base point. That is, by making the linear high-density section 70 function like a hinge, the planar absorbent core 11 can easily deform according to the concavity and convexity of the wearer's body, and can easily fit the wearer's crotch area.

[0072] Furthermore, in the sanitary napkin 1, at least one strip is disposed between a pair of high-density portions 70, 70 spaced apart at predetermined intervals in the left-right direction. Figure 4 The absorbent core 11 has three elastic members 50 in the crotch area. In the portion of the absorbent core 11 where the stiffness is increased due to the high-density portion 70, excessive contraction of the elastic members 50 is suppressed, thus preventing the absorbent core 11 from being pressed too forcefully against the crotch area. Furthermore, due to the elasticity of the elastic members 50 located between the pair of high-density portions 70, 70, the area between the pair of high-density portions 70, 70 easily deforms towards the skin, facilitating a tight seal between the wearer's crotch area and the vaginal opening. This further improves the fit of the absorbent body 10.

[0073] Alternatively, in addition to the high-density portion 70, a compression portion that compresses the absorbent core 11 in the thickness direction may also be provided (in... Figure 2 (Not shown in the figure). For example, by providing a compression portion different from the high-density portion 70 at the end of the absorbent core 11 in the longitudinal direction, the thickness of the absorbent core 11 can be easily controlled. That is, when wearing the sanitary napkin 1, even if the absorbent core 11 deforms convexly towards the skin due to the elasticity of the crotch elastic member 50, the increase in the thickness of the absorbent core 11 can be suppressed by using this additional compression portion (not shown) at the end of the absorbent core 11 in the longitudinal direction. As a result, the situation where the absorbent core 11 is pressed too hard against the skin or the breathability is reduced can be suppressed, and the wearer is less likely to experience discomfort.

[0074] (Waist component 20)

[0075] Waist frame component 20 is an outer casing composed of multiple sheet components, including at least non-skin side panels 21, skin side panels 22, 23, and multiple waist frame elastic components 26, 26... (see reference) Figure 2 and Figure 3 In the following description, the portion of the waist member 20 that is forward (abdominal) from the center position CL in the length direction will be referred to as the front waist portion 20f, and the portion that is backward (back) from the center position CL will be referred to as the back waist portion 20b. The front waist portion 20f is the part that contacts the abdominal side of the wearer's body when wearing the sanitary napkin 1, and is equivalent to the "front panel" of the sanitary napkin 1. The back waist portion 20b is the part that contacts the back side of the wearer's body when wearing the sanitary napkin 1, and is equivalent to the "back panel" of the sanitary napkin 1. In addition, a pair of separation portions 25, described later, are provided at both ends of the front waist portion 20f (front panel) of the sanitary napkin 1 in the left and right directions.

[0076] The non-skin side panel 21 is a non-stretchable sheet member disposed on the non-skin side of the sanitary napkin 1, and is continuously arranged from the front to the back in the length direction. The non-skin side panel 21 is formed, for example, from spunbond nonwoven fabric, SMS nonwoven fabric, etc. In this embodiment, such as... Figure 2 As shown in the top view, the non-skin side panel 21 has a shape that narrows inward in the left-right direction from the central portion (including the central position CL) along its length. Alternatively, it can also be, as... Figure 3 As shown, by folding back the ends of the non-skin side panel 21 in the length direction, the waist member 20 locally has a structure of more than 3 layers.

[0077] Skin side sheet 22 is a sheet member that is laminated on the skin side of non-skin side sheet 21 along its length (front side, ventral side) and is formed of the same non-woven fabric as non-skin side sheet 21. Skin side sheet 23 is a sheet member that is laminated on the skin side of non-skin side sheet 21 along its length (back side, dorsal side) and is formed of the same non-woven fabric as non-skin side sheet 21.

[0078] The waist elastic member 26 is formed, for example, by elastic bands, and multiple of them are arranged at predetermined intervals in the vertical direction between the non-skin side piece 21 and the skin side piece 22 (23), and are installed in a state of elongation in the horizontal direction. Through the stretchability in the horizontal direction exhibited by the waist elastic member 26, the waist member 20 fits the wearer's waist.

[0079] The waist elastic member 26 can be installed using an adhesive such as a hot melt adhesive. For example, a hot melt adhesive can be applied to the waist elastic member 26, causing it to elongate at a predetermined elongation ratio and be sandwiched between the non-skin side piece 21 and the skin side piece 22 (23), thereby installing the waist elastic member 26. That is, the non-skin side piece 21 and the skin side piece 22 (23) are joined together by means of the waist elastic member 26 and by means of an adhesive. Alternatively, the adhesive can be applied to the non-skin side piece 21 and the skin side piece 22 (23) instead of the waist elastic member 26 side, thereby installing the waist elastic member 26.

[0080] For sanitary napkin 1, from Figure 2In the unfolded state shown, with the central position CL along the length direction as the folding position, the sanitary napkin 1 is folded in half along the length direction (front-to-back direction) so that the skin sides of the front waist section 20f (large front panel) and the skin sides of the back waist section 20b (large back panel) are facing each other. In this folded state, the left and right ends 40f, 40f of the overlapping front waist section 20f and the left and right ends 40b, 40b of the back waist section 20b are joined together using a known joining method such as sealing welding, thereby forming a side joining portion 40. Thus, the folded waist components 20 (front waist section 20f and back waist section 20b) are connected in a ring shape on the front (abdominal side) and back (dorsal side), forming a... Figure 1 As shown, a waist opening 1a and a pair of leg openings 1b, 1b, thus forming a panty-shaped sanitary napkin 1.

[0081] (Clamping component 30)

[0082] A pair of engaging members 30 are provided on both sides of the sanitary napkin 1 in the left-right direction. The engaging member 30 has a base material sheet 31 and an engaging part 32.

[0083] The substrate sheet 31 is a sheet component made of non-woven fabric, etc., and one side of it in the left-right direction (in) Figure 2 The outer side (in the left-right direction) is fixed to the waist member 20 in a non-separable manner. Hereinafter, the portion where the engaging member 30 (base plate 31) is fixed to the waist member 20 in a non-separable manner will also be referred to as the base plate fixing portion 35. In this embodiment, the base plate 31 and the waist member 20 are fixed together in a non-separable manner using the side joining portion 40 of the waist member 20. That is, the side joining portion 40 serves as both the base plate fixing portion 35 and the base plate fixing portion 35. However, it is also possible to fix the base plate 31 and the waist member 20 in a non-separable manner using a base plate fixing portion 35 that is different from the side joining portion 40.

[0084] Additionally, on the other side of the substrate sheet 31 in the left-right direction (in Figure 2 A locking portion 32 is provided on the inner side (in the left-right direction). The locking portion 32 is a component for locking the locking member 30 to the waist member 20 in a detachable manner. The locking portion 32 is provided in a predetermined area (near the inner end in the left-right direction) on the skin side of the locking member 30. In this embodiment, the locking portion 32 is, for example, a hook and loop fastener with multiple fastening members (fastening protrusions not shown) made of polypropylene or the like on the skin side. By hooking these fastening members to the fibers of the non-woven fabric constituting the outermost non-skin side panel 21 of the waist member 20, the locking portion 32 (locking member 30) is locked to the non-skin side of the waist member 20 in a detachable manner.

[0085] likeFigure 1 As shown, in the sanitary napkin 1 in the underpants-type state in the present embodiment, the engaging portions 32 of the engaging members 30 engage the front waist portion 20f in a region inside the side joint portions 40 in the leftward and rightward directions.

[0086] <About the action when wearing the sanitary napkin 1>

[0087] Next, the action when wearing the sanitary napkin 1 will be described. The sanitary napkin 1 is in the underpants-type (panty-type) as shown in the initial state, and can be worn as a general underpants-type absorbent article. Also, when the sanitary napkin 1 is removed from the body, the sanitary napkin 1 can be removed by separating the waist member 20 into the front waist portion 20f and the rear waist portion 20b and unfolding the sanitary napkin 1, which is formed in a loop shape along the wearer's waist. Further, by causing the engaging member 30 engaged with either one of the front waist portion 20f and the rear waist portion 20b to engage the other one of the front waist portion 20f and the rear waist portion 20b after the waist member 20 is separated, the sanitary napkin 1 can be worn as a belt-type absorbent article. Figure 1

[0088] Further, it can also be that, when the sanitary napkin 1 is worn, either one of the tearable lines 25 (separation portions 25) in the leftward and rightward directions is torn in advance. For example, it can also be that, after one leg is passed through the leg opening lb on the other side (the side on which the tearable line 25 is not torn) in the leftward and rightward directions and is lifted toward the crotch portion, the engaging member 30 on one side is caused to engage the waist member 20, thereby wearing the sanitary napkin 1 (see the following Figure 6 ). Further, other actions of putting on and taking off can be performed.

[0089] Figure 5A and Figure 5B are diagrams illustrating the action of separating the waist member 20 of the sanitary napkin 1 into the front and rear. Figure 5A is a cross-sectional schematic view showing the state of the sanitary napkin 1 in the underpants-type state as viewed from the upper side in the upward and downward directions (the side on which the waist opening la is present), Figure 5B is a cross-sectional schematic view showing the state after the waist member 20 is separated into the front and rear.

[0090] In the sanitary napkin 1 in the underpants-type state, the front waist portion 20f and the rear waist portion 20b are joined to each other by the side joint portions 40, 40 provided at both ends in the leftward and rightward directions, thereby forming the loop-shaped waist opening la as shown. Figure 5A Further, a pair of engaging members 30 is provided at both sides in the leftward and rightward directions of the waist member 20, and the engaging members 30 engage the non-skin side surface of the front waist portion 20f by the engaging portions 32.

[0091] Further, in the sanitary napkin 1 in the underpants-type state, Figure 5A ​In this design, a pair of separating portions 25 are provided on both sides of the front waist section 20f in the left-right direction. The separating portions 25 are provided to separate the waist member 20, which is formed in a ring shape along the wearer's waist, into the front waist section 20f and the back waist section 20b. The separating portions 25 are located either in the left-right direction, closer to the side joint 40 and further outward than the inner end of the engaging member 30. That is, the separating portions 25 are located in the left-right direction at a position overlapping with the engaging member 30. This separating portion 25 allows the waist member 20 to be separated into a portion including at least the central portion of the front waist section 20f and a portion including at least the central portion of the back waist section 20b.

[0092] In this embodiment, the separating portion 25 is composed of a plurality of grooves (cutouts 25a described later) that penetrate the waist member 20 in the thickness direction, and a so-called tear line that is intermittently arranged in the vertical direction from the waist opening 1a to the leg opening 1b (see reference). Figure 9 (etc.). By tearing the waist member 20 along the tear line, it can be easily separated into a front waist part 20f and a rear waist part 20b. Hereinafter, the separation part 25 will also be referred to as the "tear line 25".

[0093] The sanitary napkin 1, after the waist component 20 is separated into the front waist part 20f and the back waist part 20b by the separating part 25 (tear line 25), becomes... Figure 5B The state shown. That is, Figure 5A The separating portion 25 is separated into a separating end 25fe on the front waist body 20f side and a separating end 25be on the rear waist body 20b side, with the front waist body 20f and the rear waist body 20b separated front and back. Furthermore, in Figure 5B In the middle, on both sides in the left and right directions, a pair of engaging members 30, 30 are joined to the back waist part 20b side by means of the base material fixing part 35 (side joining part 40), and the engaging parts 32, 32 provided on the engaging members 30, 30 are respectively engaged to the front waist part 20f. Thus, the waist part 20 is formed into a ring shape. When the sanitary napkin 1 in this state is removed from the wearer's body, the sanitary napkin 1 can be unfolded by peeling off the engaging part 32 from the front waist part 20f, and the sanitary napkin 1 can be easily removed.

[0094] Next, as an example of the action of wearing sanitary napkin 1, the operation method of wearing sanitary napkin 1 is explained after tearing the easy-tear line 25 to separate the waist component 20 from the front and back, and then locking the locking component 30 into the waist component 20. Figure 6 This is an illustration of an example of the action of wearing sanitary napkin 1. Figure 6 The image shows a sanitary napkin 1 with one of the two tear strips 25 on the left and right sides to be torn open, while the other tear strip 25 remains untorn.

[0095] existFigure 6 In the case of wearing the sanitary napkin 1, first, one leg (left leg in the Figure 6 case) of the wearer is passed through the leg opening lb on the side where the tearable line 25 is not torn and the sanitary napkin 1 is lifted up to the knee. Next, the front waist portion 20f and the back waist portion 20b which are separated by tearing the tearable line 25 are respectively held by hands and pulled up to the obliquely upper side, and the sanitary napkin 1 including the absorbent main body 10 is lifted up to the crotch portion as a whole. In the case of wearing the sanitary napkin 1, the Figure 6 end portion of the front waist portion 20f is held by the left hand of the wearer and pulled up to the obliquely upper side, and the end portion of the back waist portion 20b (engagement member 30) is held by the right hand and pulled up to the obliquely upper side on the right leg side of the wearer. Then, the back waist portion 20b is wrapped around the abdomen side of the wearer by the right hand while the front waist portion 20f is pressed by the left hand, and the engagement member 30 is engaged with the non-skin side surface of the front waist portion 20f, so that the sanitary napkin 1 is formed into a panty type. By such an operation, the sanitary napkin 1 can be easily attached.

[0096] In the wearing operation of the sanitary napkin 1 shown in Figure 6 FIG. 6, it is desirable that the absorbent main body 10 is also lifted up when the front waist portion 20f and the back waist portion 20b are pulled up to the obliquely upper side, so that the absorbent main body 10 is firmly fitted to the crotch portion of the wearer. Specifically, it is desirable that the leakage barrier wall portion 60 which stands up to the skin side on both sides in the left-right direction of the absorbent main body 10 is gaplessly fitted along the groin portion of the wearer, and the absorbent core 11 is fitted to the discharge port of the wearer.

[0097] Figure 7 is a view which shows the state of the sanitary napkin 1 at the time of the wearing operation, and shows the state of the waist elastic members 26, the leakage barrier wall elastic members 61, and the crotch elastic members 50 in the case where the sanitary napkin 1 is worn as in Figure 6 FIG. 6. In the wearing operation of the sanitary napkin 1, when the end portion of the front waist portion 20f after the tearable line 25 (separation portion) is separated is pulled up to the obliquely upper side, the plurality of waist elastic members 26, 26,... provided to the front waist portion 20f are also pulled up to the obliquely upper side.

[0098] Here, in the front waist portion 20f, the plurality of waist elastic members 26, 26,... which are arranged on the last side (in the case of FIG. 6, the right side) in the longitudinal direction so as to overlap the tearable line 25 (separation portion) are arranged so as to be pulled up to the obliquely upper side. In the case of FIG. 6, the waist elastic members 26, 26,... which are arranged on the last side in the longitudinal direction so as to overlap the tearable line 25 (separation portion) are arranged so as to be pulled up to the obliquely upper side. Figure 7The waist elastic member 26 at the lowermost side in the up-and-down direction (the lower end of the front waist portion 20f) is provided as a rear-end waist elastic member 26b. At this time, the rear-end waist elastic member 26b and the leakage barrier wall elastic member 61 are arranged in a manner of crossing each other. In other words, in the lengthwise direction (the up-and-down direction), the front side end 61ef (the upper end) of the leakage barrier wall elastic member 61 is positioned at a position further forward (further upward) than the rear-end waist elastic member 26b. On the other hand, the rear-end waist elastic member 26b and the crotch elastic member 50 do not cross each other. In other words, in the lengthwise direction (the up-and-down direction), the front side end 50ef (the upper end) of the crotch elastic member 50 is positioned at a position further rearward (further downward) than the rear-end waist elastic member 26b. Further, the end in the lengthwise direction of the leakage barrier wall elastic member 61 and the crotch elastic member 50 means the end of the portion in which the stretchability of the leakage barrier wall elastic member 61 and the crotch elastic member 50 functions (so-called "effective length" of the elastic member).

[0099] In the case where the front side end 61ef (the upper end) of the leakage barrier wall elastic member 61 is positioned at a position further rearward (further downward) than the rear-end waist elastic member 26b in the lengthwise direction (the up-and-down direction), when the end portion of the front waist portion 20f divided by the easy-tear line 25 (the separation portion) is pulled, the force to pull the rear-end waist elastic member 26b upward obliquely is difficult to be transmitted to the leakage barrier wall elastic member 61. In this case, the rising of the leakage barrier portion 60 toward the skin side becomes insufficient, and there is a concern that a gap is generated between the absorbent main body 10 and the skin or excretion leakage occurs at the groin portion of the wearer.

[0100] On the contrary, in the sanitary napkin 1 of the present embodiment, the rear-end waist elastic member 26b and the leakage barrier wall elastic member 61 cross each other, and thus, when the rear-end waist elastic member 26b is pulled upward obliquely at the time of wearing, the leakage barrier wall elastic member 61 is also pulled upward obliquely in the lengthwise direction (the up-and-down direction) in conjunction with the rear-end waist elastic member 26b. That is, the force to pull the front waist portion 20f upward obliquely acts preferentially on the leakage barrier wall elastic member 61 via the waist elastic member 26 (26b), and thus the leakage barrier wall elastic member 61 is easily lifted. Therefore, at both side portions of the absorbent main body, the leakage barrier portion 60 rises toward the skin side of the wearer and fits to the groin portion, and thus a gap is less likely to be generated, and excretion side leakage and the like are easily suppressed.

[0101] Furthermore, assuming that the front end 50ef (upper end) of the crotch elastic member 50 is positioned further forward (upper) than the rear waist elastic member 26b in the longitudinal direction (vertical direction), when wearing the sanitary napkin 1, the force that pulls the rear waist elastic member 26b diagonally upward is easily transmitted to the crotch elastic member 50. In this case, there is a concern that the elastic force of the crotch elastic member 50 will act strongly in the wearer's crotch area, causing the absorbent body 10 to shift towards the abdomen or compress the abdomen, thus reducing the fit.

[0102] In contrast, in the sanitary napkin 1 of this embodiment, the rear waist elastic member 26b and the crotch elastic member 50 do not intersect. Therefore, even when the rear waist elastic member 26b is pulled diagonally upward during the wearing action, the crotch elastic member 50 is not easily linked with the rear waist elastic member 26b, and the crotch elastic member 50 is not easily pulled up towards the front (upper side in the vertical direction) in the length direction. In other words, the force of pulling the rear waist elastic member 26b (front waist part 20f) diagonally upward is not easily applied excessively to the crotch elastic member 50. Therefore, it can prevent the absorbent body 10 from shifting towards the abdomen or compressing the wearer's lower abdomen and excretion opening, and is less likely to cause discomfort.

[0103] Furthermore, in sanitary napkin 1, in the longitudinal direction (vertical direction), the rear end 50eb of the crotch elastic member 50 is located further back than the central position CL of sanitary napkin 1 (see reference). Figure 2 That is, the crotch elastic member 50 is configured to cross the central position CL in the length direction. Therefore, the crotch elastic member 50 crosses the crotch area as a whole and can easily exert elastic force over a large range in the front and back, so as to reliably ensure the fit of the absorbent body 10 at the crotch area when wearing the sanitary napkin 1. Through these structures, the fit at the crotch and groin areas can be improved when wearing the sanitary napkin 1.

[0104] In addition, such as Figure 4 As shown, when the absorbent body 10 is in an extended state, the leak-proof elastic member 61 is positioned laterally than the outermost end 11es of the absorbent core 11 in the left-right direction. That is, when viewed along the thickness direction, the leak-proof elastic member 61 is positioned so as not to overlap with the relatively stiff absorbent core 11. By positioning the leak-proof elastic member 61 in a region with lower stiffness and laterally than the absorbent core 11, the elasticity of the leak-proof elastic member 61 in the leak-proof portion 60 is less affected by the absorbent core 11, and the leak-proof portion 60 can easily deform freely. Therefore, when wearing the sanitary napkin 1, the leak-proof portion 60 easily rises towards the skin and conforms more closely to the wearer's groin area.

[0105] Additionally, at both ends of the leak-proof wall portion 60 along its length, leak-proof wall end fixing portions 66 (hereinafter also simply referred to as "end fixing portions 66") are provided to fix the leak-proof wall portion 60 to the skin side of the top plate 12. The end fixing portions 66 are formed of an adhesive such as a hot-melt adhesive. Figure 4 In the sanitary napkin 1, the front end of the leak-proof wall portion 60 is fixed to the skin side of the top sheet 12 via a pair of front end fixing portions 66f, 66f. Similarly, the rear end of the leak-proof wall portion 60 is fixed to the skin side of the top sheet 12 via a pair of rear end fixing portions 66b, 66b. When wearing the sanitary napkin 1, the portion of the leak-proof wall portion 60 that is not fixed to the top sheet 12 in the longitudinal direction between the front end fixing portion 66f and the rear end fixing portion 66b separates from the skin side of the top sheet 12 and stands upright towards the skin, thus sealing against the wearer's groin area.

[0106] Furthermore, when the absorbent body 10 is in an extended state, the end fixing portions 66 (66f, 66b) are positioned laterally than the outermost end 11es of the absorbent core 11 in the left-right direction. That is, when viewed along the thickness direction, the end fixing portions 66 are positioned so as not to overlap with the more rigid absorbent core 11. As described above, when wearing the sanitary napkin 1, the leak-proof wall portion 60 stands upright towards the skin between the front end fixing portion 66f and the rear end fixing portion 66b. Specifically, in the length direction, the rear end of the front end fixing portion 66f and the front end of the rear end fixing portion 66b become the starting point for the leak-proof wall portion 60 to stand upright. By positioning the end fixing portion 66, which becomes the starting point for this standing up, in a region with lower rigidity and laterally than the absorbent core 11, the movement of the leak-proof wall portion 60 when standing upright is less likely to be disturbed. Therefore, when wearing the sanitary napkin 1, the leak-proof wall portion 60 easily stands upright towards the skin and more easily conforms to the wearer's groin area.

[0107] In addition, such as Figure 2 As shown, in the length direction, at least a portion of the front end fixing portion 66f is located forward of the rear end waist elastic member 26b. That is, when viewed along the thickness direction, at least a portion of the waist elastic member 26 and the front end fixing portion 66f overlap. With such a structure, when wearing the sanitary napkin 1, in the portion overlapping with the waist elastic member 26, the front end fixing portion 66f is pressed from the non-skin side to the skin side due to the elastic force of the waist elastic member 26. Therefore, in the front end of the leak-proof wall portion 60, the front end fixing portion 66f can easily fit in a planar shape to the wearer's skin (abdomen), and it is not easy for the leak-proof wall portion 60 to shift position or create gaps between itself and the skin when it is upright. As a result, the fit of the leak-proof wall portion 60 is further improved at the wearer's groin area, and side leakage of urine and the like is less likely to occur in the area near the excretion opening on the wearer's abdomen.

[0108] Further, the end fixing portion 66 is provided at a predetermined distance apart from the leakage preventing wall elastic member 61 in the left-right direction (see Figure 4 ). That is, a predetermined gap is formed between the end fixing portion 66 and the leakage preventing wall elastic member 61 in the left-right direction. When the leakage preventing wall portion 60 is erected toward the skin side, the portion provided with the leakage preventing wall elastic member 61 becomes the erected top end and comes into contact with the crotch portion of the wearer. In the case where the end fixing portion 66 is provided overlapping the leakage preventing wall elastic member 61, there is a concern that the adhesive forming the end fixing portion 66 causes the rigidity of the erected top end of the leakage preventing wall portion 60 (the portion provided with the leakage preventing wall elastic member 61) to be high, resulting in a sense of incongruity or discomfort caused by a harder tactile sensation at the crotch portion of the wearer. In contrast, in the sanitary napkin 1, the gap between the leakage preventing wall elastic member 61 and the end fixing portion 66 functions as a dry edge, whereby the erected top end of the leakage preventing wall portion 60 is less likely to become hard. Therefore, the skin tactile sensation of the erected top end of the leakage preventing wall portion 60 at the crotch portion of the wearer when the sanitary napkin 1 is worn is relatively soft, and the occurrence of a sense of incongruity or discomfort in the wearer can be suppressed.

[0109] Further, in the left-right direction, the innermost end of the contour (outer edge) of the waist member 20 is located at a position outward of the outermost end 11es of the absorbent core 11 and at a position forward of the central position CL in the length direction. In Figure 2 , when the position in the left-right direction of the waist member 20 at which the width is narrowest in the length direction is taken as the narrowest position NP, at the narrowest position NP, the left-right direction inner end 20np of the waist member 20 is located at a position outward of the left-right direction outer end 11es of the absorbent core 11. Further, the narrowest position NP is located at a position forward of the central position CL of the sanitary napkin 1 in the length direction.

[0110] If this structure is adopted, when the sanitary napkin 1 is worn, when the waist member 20 is pulled up obliquely upward (see Figure 6 and Figure 7), the absorbent core 11 is in a state of being always covered by the waist member 20, and is not easily visually recognized from the outside. Also, since the width of the waist member 20 is narrowest at a position on the front side of the central position CL in the longitudinal direction, when the waist member 20 is pulled up obliquely upward, the surface of the waist member 20 is not easily formed with a large wrinkle, and the wrinkle is not easily noticeable. Thus, it is not easy to recognize from the outside that the sanitary napkin 1 is being worn, and the psychological burden of the wearer who does not want to let others know that the sanitary napkin is being worn can be alleviated. Also, since the width of the waist member 20 is narrower at a position on the front side of the central position CL in the longitudinal direction of the sanitary napkin 1, when the leg is moved forward in a state where the sanitary napkin 1 is being worn (for example, when walking, etc.), the waist member 20 does not easily interfere with the leg of the wearer, and the sense of incongruity during wearing can be reduced.

[0111] Also, the waist member 20 of the sanitary napkin 1 is configured by laminating a plurality of sheet members in the thickness direction. In the present embodiment, the waist member 20 is configured by laminating two sheet members, the non-skin side sheet 21 and the skin side sheet 22 (the skin side sheet 23). Figure 3 Also, the waist member 20 has a portion where the number of laminated sheet members is large and a portion where the number of laminated sheet members is small. In the present embodiment, the portion where the number of laminated sheet members is small in the central portion in the longitudinal direction is the first portion FL. Also, the portion located on the outer side (closer to the end portion) in the longitudinal direction from the first portion FL and where the number of laminated sheet members is larger than that of the first portion FL is the second portion ML. As shown in FIG. 1, in the sanitary napkin 1 of the present embodiment, the first portion FL in the central portion in the longitudinal direction is provided with one non-skin side sheet 21. Also, the second portion ML on the front side in the longitudinal direction from the first portion FL is provided with at least two sheet members, the non-skin side sheet 21 and the skin side sheet 22. Similarly, the second portion ML on the rear side in the longitudinal direction from the first portion FL is provided with at least two sheet members, the non-skin side sheet 21 and the skin side sheet 23. Also, it is possible to have a structure where two sheet members are laminated in the first portion FL and three or more sheet members are laminated in the second portion ML, etc. Figure 3

[0112] Thus, the portion where the number of laminated sheet members is small in the central portion in the longitudinal direction is set as the first portion FL. Also, the portion located on the outer side (closer to the end portion) in the longitudinal direction from the first portion FL and where the number of laminated sheet members is larger than that of the first portion FL is set as the second portion ML. As shown in FIG. 1, in the sanitary napkin 1 of the present embodiment, the first portion FL in the central portion in the longitudinal direction is provided with one non-skin side sheet 21. Also, the second portion ML on the front side in the longitudinal direction from the first portion FL is provided with at least two sheet members, the non-skin side sheet 21 and the skin side sheet 22. Similarly, the second portion ML on the rear side in the longitudinal direction from the first portion FL is provided with at least two sheet members, the non-skin side sheet 21 and the skin side sheet 23. Also, it is possible to have a structure where two sheet members are laminated in the first portion FL and three or more sheet members are laminated in the second portion ML, etc. Figure 3

[0113] ​​The second portion ML of the waist member 20, which is located at the front and rear ends in the longitudinal direction, is a portion that is pulled obliquely upward when the wearing operation of the sanitary napkin 1 is performed (see FIG. 2). Therefore, by increasing the number of laminated sheets of the sheet member at the second portion ML more than the number of laminated sheets of the sheet member at the first portion FL, the strength of the second portion ML is increased, and the waist member 20 can be prevented from being torn when it is pulled obliquely upward. Figure 6 ). Therefore, by increasing the number of laminated sheets of the sheet member at the second portion ML more than the number of laminated sheets of the sheet member at the first portion FL, the strength of the second portion ML is increased, and the waist member 20 can be prevented from being torn when it is pulled obliquely upward.

[0114] Further, in the present embodiment, the non-skin side sheet 21 is folded back at the front and rear ends in the longitudinal direction, so that the number of laminated sheets of the sheet member at the second portion ML becomes three sheets locally. With this structure, the strength of the front and rear ends in the longitudinal direction of the waist member 20 can be further increased, and the waist member 20 can be made less likely to be torn. Figure 3

[0115] Further, as shown in FIG. 2, the first portion FL overlaps the central position CL of the sanitary napkin 1 in the longitudinal direction, and the second portion ML overlaps the tearable line 25 (separation portion) and the side joint portion 40 in the longitudinal direction. Thus, the strength of the second portion ML of the waist member 20, which is located near the tearable line 25 (separation portion), can be increased, and the waist member 20 can be made less likely to be torn when it is pulled obliquely upward when the front and rear portions are separated during the wearing operation of the sanitary napkin 1. On the other hand, in the first portion FL of the waist member 20, which is located near the central position CL of the crotch when the sanitary napkin 1 is worn, the rigidity is not excessively high and the softness is easily maintained, and thus the fit at the crotch portion can be improved. Figure 3

[0116] Further, in the present embodiment, the non-skin side sheet 21 is folded back at the front and rear ends in the longitudinal direction, so that the number of laminated sheets of the sheet member at the second portion ML becomes three sheets locally. With this structure, the strength of the front and rear ends in the longitudinal direction of the waist member 20 can be further increased, and the waist member 20 can be made less likely to be torn. Figure 3 Figure 3 ​​​). Therefore, the portion of the waist member 20 in which the side joint 40f (40b) overlaps in the length direction is constituted by the second portion ML in which the number of laminated sheets of the sheet member is large. Therefore, the second portion ML in which the number of laminated sheets is large is formed in the portion in which a strong force is easily applied when the waist member 20 is pulled upward obliquely, and the waist member 20 is less likely to tear. In addition, in the first portion FL on the rear side (front side) of the rear end 40fb (front end 40bb) of the side joint 40f (40b), the number of laminated sheets of the sheet member constituting the waist member 20 is small and the stiffness is low, and thus the waist member 20 is more easily made to conform to the wearer's crotch portion according to the unevenness of the body.

[0117] In addition, in the second portion ML in which two or more sheet members are laminated in the waist member 20, a high compression portion 91 in which the sheet members are compressed in the thickness direction and joined to each other can be formed. In the high compression portion 91, the sheet members are compressed in the thickness direction and joined to each other, and thus the density of the high compression portion 91 is higher than that of the surrounding portions. In the high compression portion 91, the sheet members are compressed in the thickness direction and joined to each other, and thus the density of the high compression portion 91 is higher than that of the surrounding portions. Figure 2 In the waist member 20, in a predetermined width of the region overlapping the tear line 25, a high compression portion 91 in which the sheet members are compressed and the density is higher than that of the surrounding portions is provided. The high compression portion 91 is a portion in which the non-skin side sheet 21 and the skin side sheet 22 laminated in the thickness direction are compressed and joined to each other, and is formed, for example, by dispersively providing a plurality of dot-shaped compression portions in the region surrounded by the broken line of FIG. 10. Figure 2 By providing such a high compression portion 91, the stiffness of the surrounding portion of the tear line 25 (separation portion) can be increased, and the portion other than the tear line 25 is less likely to tear, and thus the waist member 20 is easily torn along the tear line 25 cleanly. In addition, since the stiffness of the laminated portion (second portion ML) of the waist member 20 is further increased, even in the case where the waist member 20 is pulled upward obliquely after the tear line 25 is torn during the wearing operation of the sanitary napkin 1, the waist member 20 is less likely to tear. In addition, since the waist member 20 is easily maintained in a planar shape at the portion in which the high compression portion 91 is provided, the waist member 20 can be closely conformed to the wearer's waist in a planar form during the wearing of the sanitary napkin 1.

[0118] In addition, in the length direction, both end portions of the crotch elastic member 50 are provided at positions overlapping the second portion ML (see FIG. 10). Figure 3). By arranging the lengthwise end portions of the crotch elastic member 50 in the second portion ML of the higher rigidity in the waist member 20, the end portions of the crotch elastic member 50 are easily stably supported. That is, the waist member 20 is easily prevented from being torn or the crotch elastic member 50 from being detached to fall off. Thus, the stretching force of the crotch elastic member 50 is easily applied to the absorbent main body 10 (the absorbent core 11). Therefore, in the sanitary napkin 1 when worn, the absorbent core 11 is easily raised toward the wearer's skin side at the portion where the crotch elastic member 50 is provided to be deformed into a convex shape to be closely fitted to the wearer's crotch portion. Further, by supporting the absorbent main body 10 by the crotch elastic member 50, even if the absorbent main body 10 increases in weight by absorbing excretion such as menstrual blood, the absorbent main body 10 is prevented from sagging. Thus, the fit at the crotch portion is prevented from being deteriorated.

[0119] Further, in the lengthwise direction of the sanitary napkin 1 in the unfolded and elongated state, the end 61ef of the front side of the leakage barrier wall elastic member 61 is located at a position on the rear side than the end 30eb of the rear side of the engaging member 30 (see FIG. 6). That is, the leakage barrier wall elastic member 61 is arranged not to overlap the engaging member 30 in the lengthwise direction. If such a structure is adopted, in the sanitary napkin 1 when worn, the leakage barrier wall elastic member 61 is prevented from being pressed by the engaging member 30 in the thickness direction when the engaging member 30 is engaged with the waist member 20 (the front waist portion 20f), and the leakage barrier wall portion 60 is easily erected toward the skin side. Further, since the stretchability of the leakage barrier wall elastic member 61 is not easily hindered, even if the wearer moves the body in the state of wearing the sanitary napkin 1, the leakage barrier wall portion 60 easily follows the movement of the body, and the fit is easily maintained in good condition. Figure 2 ). That is, the leakage barrier wall elastic member 61 is arranged not to overlap the engaging member 30 in the lengthwise direction. If such a structure is adopted, in the sanitary napkin 1 when worn, the leakage barrier wall elastic member 61 is prevented from being pressed by the engaging member 30 in the thickness direction when the engaging member 30 is engaged with the waist member 20 (the front waist portion 20f), and the leakage barrier wall portion 60 is easily erected toward the skin side. Further, since the stretchability of the leakage barrier wall elastic member 61 is not easily hindered, even if the wearer moves the body in the state of wearing the sanitary napkin 1, the leakage barrier wall portion 60 easily follows the movement of the body, and the fit is easily maintained in good condition.

[0120] <Concerning the identification of the sanitary napkin 1>

[0121] In the above-described embodiments, the case where the sanitary napkin 1 can be used in the panty-type state and the belt-type state is described, but in general, the wearing method, the wearing order, and the like of the panty-type absorbent article and the belt-type sanitary napkin are different, and in particular, the wearing in the belt-type state is performed in different orders to the left and right to become the wearing state, and thus it is necessary to make the wearer or the like recognize the wearing method.

[0122] For example, in the case of the sanitary napkin 1 in the panty-type state, the sanitary napkin 1 is lifted in the state after the both legs are passed through the pair of leg opening 1b from the waist opening 1a side, and the waist opening 1a is brought to the position of the wearer's waist, whereby the wearing state can be achieved. That is, for the sanitary napkin 1 in the panty-type state, the wearing can be performed in the same movement substantially symmetrically to the left and right of the wearer's body.

[0123] On the other hand, in the case of wearing the sanitary napkin 1 in the belt type state, for example, the following state is provided: the one side end portion of the front waist portion 20f in the left-right direction is torn using the tearable line 25 on the one side in the left-right direction of the underpants type state, and the one side engaging member 30 is engaged to the front waist portion 20f, and one leg of the wearer is passed through the leg opening 1b on the one side in the left-right direction of the sanitary napkin 1. Next, the tearable line 25 on the other side in the left-right direction of the front waist portion 20f is torn, and the other side engaging member 30 is engaged to the front waist portion 20f, thereby providing an action of passing the other leg of the wearer through the leg opening 1b on the other side in the left-right direction of the sanitary napkin 1.

[0124] However, the general underpants type (shorts type) absorbent article is in a left-right symmetrical shape in plan view, and thus, in the case of the absorbent article which can be worn in both the underpants type state and the belt type state like the sanitary napkin 1, in the case of being provided in the belt type state, there is a case where it is difficult for the wearer or the like to recognize that the wearing order of the sanitary napkin 1 in the belt type state is different in the left and right. In particular, since the sanitary napkin 1 is in the underpants type state in the initial state taken out from the package, there is a case where it is difficult for the wearer or the like to recognize that the wearing order of the sanitary napkin 1 in the belt type state is different in the left and right.

[0125] Therefore, it can also be that, for the sanitary napkin 1 in the underpants type state, by being provided in a shape which is asymmetrical with respect to the center in the left-right direction in the stretched state, it is easy for the wearer or the like to recognize, at the time of wearing, that it is preferable that the sanitary napkin 1 is worn in different orders on the one side and the other side in the left-right direction.

[0126] Figure 8 is a plan view showing an example of providing the sanitary napkin 1 in a shape which is asymmetrical with respect to the center C-C in the left-right direction. In this Figure 8 In the sanitary napkin 1 in the stretched state, the engaging member 30 provided on the one side in the left-right direction is provided as the one side engaging member 30a, and the engaging member 30 provided on the other side in the left-right direction is provided as the other side engaging member 30b. The same is provided for other portions (for example, the side joint portion 40, the engaging portion 32, and the like) other than the engaging member 30.

[0127] As shown in Figure 8 In the stretched state, the length L1a from the other side end 30aei of the one side engaging member 30a to the other side end 40au of the one side side joint portion 40a (one side fixed portion 35a) in the left-right direction is different from the length L1b from the one side end 30bei of the other side engaging member 30b to the one side end 40bu of the other side side joint portion 40b (other side fixed portion 35b) in the left-right direction (L1a≠ L1b).

[0128] By making the length Lla and the length Llb in the elongated state different in the right-and-left direction of the sanitary napkin 1, the wearer or the like easily recognizes that the sanitary napkin 1 is asymmetric in shape with respect to the center C-C in the right-and-left direction. Therefore, at the time of wearing, the wearer or the like easily recognizes and easily realizes that it is preferable to wear the sanitary napkin 1 in different order on one side and the other side. In particular, in the case of an absorbent article that can also be worn in a panty-type state like the sanitary napkin 1, since the absorbent article in the panty-type state generally has a right-and-left symmetric shape, the wearer or the like is likely to be confused when intending to wear the absorbent article in a belt-type state. In contrast, in the sanitary napkin 1 shown in the drawing, the sanitary napkin 1 in the initial state in the panty-type state is asymmetric in shape with respect to the center C-C in the right-and-left direction, whereby the wearer or the like easily recognizes that the sanitary napkin 1 is not a general absorbent article in the panty-type state but an absorbent article that can also be worn in the belt-type state, and that it is preferable to wear the sanitary napkin 1 in different order on one side and the other side in the right-and-left direction. Figure 8 In the sanitary napkin 1 shown in the drawing, the sanitary napkin 1 in the initial state in the panty-type state is asymmetric in shape with respect to the center C-C in the right-and-left direction, whereby the wearer or the like easily recognizes that the sanitary napkin 1 is not a general absorbent article in the panty-type state but an absorbent article that can also be worn in the belt-type state, and that it is preferable to wear the sanitary napkin 1 in different order on one side and the other side in the right-and-left direction.

[0129] Further, it is preferable that, in the sanitary napkin 1 in the elongated state, the length L3a from the center 32ac in the right-and-left direction of the one-side engaging portion 32a to the other-side end 40au of the one-side side engaging portion 40a (the one-side fixing portion 35a) and the length L3b from the center 32bc in the right-and-left direction of the other-side engaging portion 32b to the one-side end 40bu of the other-side side engaging portion 40b (the other-side fixing portion 35b) be different (L3a≠L3b) in the right-and-left direction.

[0130] Thus, compared with the case where the length L3a and the length L3b are the same length, the wearer or the like easily recognizes that the sanitary napkin 1 is asymmetric in shape with respect to the center C-C in the right-and-left direction. Also, the wearer or the like easily recognizes that it is preferable to wear the sanitary napkin 1 in different order on one side and the other side in the right-and-left direction.

[0131] Further, it is also possible that the area of the one-side engaging member 30a and the area of the other-side engaging member 30b are made different in the sanitary napkin 1 in the elongated state. Compared with the case where the one-side engaging member 30a and the other-side engaging member 30b are the same area, the wearer or the like easily recognizes that the sanitary napkin 1 is asymmetric in shape with respect to the center in the right-and-left direction by visually recognizing the one-side engaging member 30a and the other-side engaging member 30b of different sizes. Therefore, at the time of wearing, the wearer or the like easily recognizes that it is preferable to wear the sanitary napkin 1 in different order on one side and the other side in the right-and-left direction of the sanitary napkin 1.

[0132] Alternatively, in the stretched state of the sanitary napkin 1, the shapes of one side's locking member 30a and the other side's locking member 30b can be different. For example, one side's locking member 30a can be semi-circular, and the other side's locking member 30b can be rectangular (in... Figure 8 (Not shown in the figure). Wearers can easily identify that the sanitary napkin 1 is asymmetrical in shape relative to the center in the left-right direction by visually recognizing the different shapes of the one-sided locking member 30a and the other-sided locking member 30b. Therefore, when wearing it, it is easy for wearers to recognize that, preferably, the sanitary napkin 1 is worn in a different order on one side and the other side in the left-right direction.

[0133] In addition, in the extended state of the sanitary napkin 1, in the left-right direction, the length L4a from the center CC of the crotch elastic member 50 to the end 30aei on the other side of the one-side locking member 30a is different from the length L4b from the center CC of the crotch elastic member 50 to the end 30bei on one side of the other-side locking member 30b (L4a≠L4b).

[0134] Therefore, compared to the case where lengths L4a and L4b are the same, it is easier for the wearer to recognize that the sanitary napkin 1 has an asymmetrical shape relative to the central CC in the left-right direction. Furthermore, it is easier for the wearer to recognize that, preferably, the sanitary napkin 1 is worn in a different order on one side and the other side in the left-right direction.

[0135] <Regarding the structure of the easy-tear line 25 (separation part 25)>

[0136] Alternatively, the tear line 25 (separation part 25) provided on the waist member 20 may have the following structure. Figure 9 This is a diagram illustrating an example of the structure of the tear line 25 (separation part 25). For example... Figure 9 As shown, the separating section 25 has multiple "cut-out portions 25a" and multiple "non-cut-out portions 25b" arranged alternately in the vertical direction (length direction). In the cut-out portions 25a, all or a portion of the sheet members (non-skin side sheet 21 and skin side sheet 22) stacked in the front waist section 20f are cut off. That is, the cut-out portion 25a is an opening that extends through the thickness direction when all the sheet members are cut off, or a groove that is recessed in the thickness direction when a portion of the sheet members are cut off. In the separating section 25, the strength of the front waist section 20f is reduced by the cut-out portions 25a, making the front waist section 20f easier to tear in the vertical direction.

[0137] The separation portion 25 extends in the up-and-down direction from the upper end 20fu (the waist opening 1a) of the front waist portion 20f to the lower end 20fl (the leg opening 1b). Thus, the waist member 20 is separated front and back by tearing the front waist portion 20f in the up-and-down direction along the separation portion 25.

[0138] In addition, as shown in Figure 9 the plurality of cutout portions 25a have an "upper cutout portion 25al" which is the second cutout portion 25a from the top, a "lower cutout portion 25a2" which is the second cutout portion 25a from the bottom, and an "intermediate cutout portion 25a3" which is located between the upper cutout portion 25al and the lower cutout portion 25a2. Further, in the extended state of the sanitary napkin 1, the length L25a3 in the up-and-down direction of the intermediate cutout portion 25a3 is longer than the length L25al in the up-and-down direction of the upper cutout portion 25al and the length L25a2 in the up-and-down direction of the lower cutout portion 25a2 (L25a3 > L25al, L25a3 > L25a2).

[0139] That is, the intermediate cutout portion 25a3 having a longer length in the up-and-down direction is provided at a position which is located inward in the up-and-down direction from the up-and-down ends of the waist member 20 (the front waist portion 20f). Thus, compared with a separation portion which does not have an intermediate cutout portion 25a3 (i.e., a separation portion which is composed only of shorter cutout portions), the intermediate cutout portion 25a3 having a longer length is likely to become the starting point for tearing the separation portion 25. Therefore, the waist member 20 is easily separated when the sanitary napkin 1 is put on or taken off.

[0140] In addition, compared with the intermediate cutout portion 25a3, the upper cutout portion 25al and the lower cutout portion 25a2 which are located at the upper end portion or the lower end portion of the waist member 20 are likely to become the starting point for tearing the separation portion 25. Therefore, by lengthening the length of the intermediate cutout portion 25a3 rather than lengthening the lengths of the upper cutout portion 25al and the lower cutout portion 25a2, it is possible to suppress accidental tearing of the separation portion 25 before use, during use, of the sanitary napkin 1, and to maintain the annular waist member 20.

[0141] In addition, the length L25a3 in the up-and-down direction of the intermediate cutout portion 25a3 of the present embodiment is longer than the lengths in the up-and-down direction of all of the cutout portions 25a including the upper cutout portion 25al and the lower cutout portion 25a2. In addition, in the extended state of the sanitary napkin 1, the separation portion 25 of the present embodiment is linear in the up-and-down direction, but the separation portion 25 can be inclined with respect to the up-and-down direction, or can be curved.

[0142] In addition, in the extended state of the sanitary napkin 1, the average length in the up-and-down direction of all of the cutout portions 25a other than the intermediate cutout portion 25a3 (for example, L25aave of Figure 9 is preferably longer than the average length in the up-and-down direction of all of the non-cutout portions 25b (for example, L25bave ofFigure 9 The length of the cut portion 25a is greater than that of the non-cut portion 25b (L25bave). Therefore, in the separating portion 25, the proportion of the total length of the cut portion 25a is relatively high, making the separating portion 25 easier to tear. However, it is not limited to the above situation; the average length L25aave of the cut portion 25a may also be less than or equal to the average length L25bave of the non-cut portion 25b. Furthermore, in Figure 9 In the middle section, the vertical length of the cut portion 25a, except for the uppermost and lowermost cut portions 25a reaching the upper and lower ends of the waist member 20 and the middle cut portion 25a3, is constant, but the vertical length of the cut portion 25a can also be irregular. Similarly, the vertical length of the non-cut portion 25b is not limited to being constant, but can also be irregular.

[0143] In addition, such as Figure 9 As shown, in the longitudinal direction (vertical direction) of the sanitary napkin 1, the front end (upper end) 61ef of the leak-proof elastic member 61 is located further back (lower) than the rear end (lower end) 25a3b of the middle cut 25a3. That is, in the longitudinal direction, the part of the leak-proof elastic member 61 that is affected by its elasticity does not overlap with the middle cut 25a3. By placing the middle cut 25a3 in a position that is not easily affected by the elasticity of the leak-proof elastic member 61, it is easy to maintain the shape of the middle cut 25a3 to a large extent when tearing the separation part (easy tear line) 25, and it is easy to separate the waist member 20 when putting on and taking off the sanitary napkin 1. Similarly, in the longitudinal direction (vertical direction), the front end (upper end) 50ef of the crotch elastic member 50 is located further back (lower) than the rear end (lower end) 25a3b of the middle cut 25a3. Figure 9 (Not shown in the image). Therefore, the separating part 25 can be torn open more easily.

[0144] ===Others===

[0145] The above-described embodiments are for ease of understanding of the present invention and are not intended to limit the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from its spirit, and that equivalents are included in the present invention.

[0146] In the above embodiment, a pair of easy-tear lines 25 (separation parts 25) are provided on both sides of the waist member 20 in the left-right direction, but easy-tear lines 25 may also be provided on only one side. That is, it may also be a structure in which only one side of the waist member 20 in the left-right direction can be separated front and back.

Claims

1. A pant-type absorbent article having a length direction, a left-right direction, and a thickness direction which intersect with each other in an unfolded and elongated state, the pant-type absorbent article having: an absorbent main body provided with an absorbent core; a waist member provided with a front waist portion and a back waist portion; a fastening member of which an outer side end portion in the left-right direction is fixed to the waist member in a non-detachable manner, and an inner side end portion in the left-right direction is fastened to a non-skin side surface of the waist member in a detachable manner; and a plurality of waist elastic members provided at least in the front waist portion and stretchable in the left-right direction, the pant-type absorbent article being characterized in that: the waist member has a pair of separation portions for separating the waist member front and back at a position overlapping the fastening member in the left-right direction, the pant-type absorbent article has a leakage barrier wall elastic member and a crotch elastic member, the leakage barrier wall elastic member is provided at both side portions in the left-right direction of the absorbent main body and stretchable in the length direction, the crotch elastic member is provided at a position closer to the non-skin side than the absorbent core and stretchable in the length direction, in the length direction, a front side end of a portion in which stretchability of the leakage barrier wall elastic member acts is located at a position closer to the front side than a last side of the waist elastic members among the plurality of waist elastic members arranged overlapping the separation portions in the front waist portion, a front side end of a portion in which stretchability of the crotch elastic member acts is located at a position closer to the back side than the last side of the waist elastic members among the plurality of waist elastic members arranged overlapping the separation portions in the front waist portion, a back side end of a portion in which stretchability of the crotch elastic member acts is located at a position closer to the back side than a central position of the pant-type absorbent article.

2. The pant-type absorbent article according to claim 1, characterized in that: in the elongated state, the leakage barrier wall elastic member is arranged at a position closer to the outer side than the outermost end in the left-right direction of the absorbent core.

3. The pant-type absorbent article according to claim 1 or 2, characterized in that: the pant-type absorbent article has a pair of leakage barrier wall portions which stand up to the skin side based on the stretchability of the leakage barrier wall elastic member at both side portions in the left-right direction of the absorbent main body, the pant-type absorbent article has a leakage barrier end fixing portion which fixes both end portions in the length direction of the leakage barrier wall portions to the skin side surface of the absorbent main body, in the elongated state, the leakage barrier end fixing portion is arranged at a position closer to the outer side than the outermost end in the left-right direction of the absorbent core.

4. The pant-type absorbent article according to claim 3, characterized in that: at least a part of the leakage barrier end fixing portion provided at a front side end portion in the length direction of the leakage barrier wall portions is located at a position closer to the front side than the last side of the waist elastic members among the plurality of waist elastic members arranged overlapping the separation portions in the front waist portion in the length direction.

5. The pant-type absorbent article according to claim 3, characterized in that: In the left-right direction, the leakage barrier wall end fixing portion and the leakage barrier wall elastic member are separated by a predetermined distance.

6. The pant-type absorbent article according to claim 1 or 2, characterized in that, In the left-right direction, the innermost end of the contour of the waist member is located at a position that is more outward than the outermost end of the absorbent core, In the longitudinal direction, the position where the waist member is narrowest in the left-right direction is located at a position that is more forward than the central position of the pant-type absorbent article.

7. The pant-type absorbent article according to claim 1 or 2, characterized in that, The waist member has: a first portion that is located at a central portion in the longitudinal direction; and a second portion that is located at a position that is more outward in the longitudinal direction than the first portion, and that has more sheet members stacked in the thickness direction than the first portion.

8. The pant-type absorbent article according to claim 7, characterized in that, The first portion overlaps the central position of the pant-type absorbent article in the longitudinal direction, The second portion overlaps the separation portion in the longitudinal direction.

9. The pant-type absorbent article according to claim 7, characterized in that, The pant-type absorbent article has a pair of side joints that join the front waist member and the back waist member to each other at both end portions in the left-right direction, In the longitudinal direction, In a region that is more forward than the central position of the pant-type absorbent article, the junction of the first portion and the second portion is located more rearward than the rearward end of the side joint, In a region that is more rearward than the central position of the pant-type absorbent article, the junction of the first portion and the second portion is located more forward than the forward end of the side joint.

10. The pant-type absorbent article according to claim 7, characterized in that, The waist member has a high compression portion in which the sheet members stacked in the second portion are compressed in the thickness direction.

11. The pant-type absorbent article according to claim 7, characterized in that, In the longitudinal direction, both end portions of the crotch elastic member are located at positions that overlap the second portion.

12. The pant-type absorbent article according to claim 1 or 2, characterized in that, In the longitudinal direction, the forward end of the portion in which the stretchability of the leakage barrier wall elastic member acts is located more rearward than the rearward end of the engagement member.

13. The pant-type absorbent article according to claim 1 or 2, characterized in that, The pant-type absorbent article has a pair of side joints that join the front waist member and the back waist member to each other at both end portions in the left-right direction, The engagement member has a side engagement member that is provided on one side in the left-right direction and another side engagement member that is provided on the other side in the left-right direction, The side joint has a side side joint that is provided on one side in the left-right direction and another side side joint that is provided on the other side in the left-right direction, the one-side engaging member is fixed to the waist member at the one-side side joint, and the other-side engaging member is fixed to the waist member at the other-side side joint, in the elongated state, the length in the left-right direction from the other-side end of the one-side engaging member to the other-side end of the one-side side joint and the length in the left-right direction from the one-side end of the other-side engaging member to the one-side end of the other-side side joint are different.

14. The pant-type absorbent article according to claim 13, wherein in the elongated state, the length in the left-right direction from the left-right direction center of the one-side engaging portion of the one-side engaging member to the other-side end of the one-side side joint and the length in the left-right direction from the left-right direction center of the other-side engaging portion of the other-side engaging member to the one-side end of the other-side side joint are different.

15. The pant-type absorbent article according to claim 13, wherein in the elongated state, the area of the one-side engaging member and the area of the other-side engaging member are different.

16. The pant-type absorbent article according to claim 13, wherein in the elongated state, the distance in the left-right direction from the center of the crotch elastic member to the other-side end of the one-side engaging member and the distance in the left-right direction from the center of the crotch elastic member to the one-side end of the other-side engaging member are different.

Images