JP7550133B2 - Pants-type absorbent article - Google Patents

Description

The present invention relates to a pants-type absorbent article.

As described in Patent Document 1, an absorbent article such as a pants-type disposable diaper is known. The absorbent article described in Patent Document 1 aims to divide the waist area placed around the wearer's waist into multiple zones, vary the stress for each zone, and position the waist area to fit the shape of the body.

JP 2017-525487 A

However, conventional absorbent articles have the following problems.
When wearing a pants-type absorbent article, both legs are passed through the leg openings and the absorbent article is pulled up to the waist. At this time, since the tensile stress in the rear far abdominal zone in the rear waist area is high, the area may get caught on the bulge of the buttocks when pulling up the absorbent article, making it difficult to pull up the absorbent article. In particular, elderly people have difficulty reaching their hands backwards, and once the absorbent article gets caught on the buttocks, it may be difficult to fix the catch.

Therefore, the objective is to provide a pants-type absorbent article that prevents the buttocks from getting caught when worn and improves wearability.

A pants-type absorbent article according to one embodiment has an absorbent body having an absorbent core and a front-rear direction and a width direction perpendicular to each other, and is arranged at least in the crotch region, a rear outer body laminated in the thickness direction with the absorbent body and arranged in the rear waist region, a front outer body laminated in the thickness direction with the absorbent body and arranged in the front waist region, and a side joint portion joining the front outer body and the rear outer body. The absorbent article has a rear waist region arranged between a waist opening in the rear waist region and a rear edge of the absorbent body, a rear intermediate region arranged between the rear edge of the absorbent body and the rear edge of the absorbent core, and a front waist arranged between the waist opening in the front waist region and the front edge of the absorbent body. The rear waist region has a rear first waist region extending forward from the waist opening, and a rear second waist region located forward of the rear first waist region and having a smaller contractile force in the width direction than the rear first waist region. The contractile force in the width direction of the second rear waist region is smaller than the contractile force in the width direction of the rear intermediate region. The length in the width direction of the rear waist region in the natural state of the absorbent article is longer than the length in the width direction of the front waist region in the natural state.

FIG. 1 is a schematic front view of an absorbent article according to the present embodiment. FIG. 2 is a schematic plan view of the absorbent article according to the present embodiment. FIG. 3 is a cross-sectional view taken along line AA shown in FIG. FIG. 4 is a schematic diagram showing a state in which the absorbent article is worn by a wearer. FIG. 5 is a schematic diagram showing an absorbent article in its natural state placed on a table.

(1) Overview of the embodiment At least the following points will become apparent from the description of this specification and the accompanying drawings.
A pants-type absorbent article according to one embodiment has an absorbent main body having an absorbent core and a front-rear direction and a width direction perpendicular to each other, and is arranged at least in the crotch region, a rear exterior body laminated in the thickness direction with the absorbent main body and arranged in the rear waist region, a front exterior body laminated in the thickness direction with the absorbent main body and arranged in the front waist region, and a side joint portion joining the front exterior body and the rear exterior body. The absorbent article has a rear waist region arranged between a waist opening in the rear waist region and a rear edge of the absorbent main body, a rear intermediate region arranged between the rear edge of the absorbent main body and the rear edge of the absorbent core, and a front waist arranged between the waist opening in the front waist region and the front edge of the absorbent main body. The rear waist region has a rear first waist region extending forward from the waist opening, and a rear second waist region located forward of the rear first waist region and having a smaller contractile force in the width direction than the rear first waist region. The contractile force in the width direction of the second rear waist region is smaller than the contractile force in the width direction of the intermediate rear region. The width direction length of the rear waist region in the natural state of the absorbent article is longer than the width direction length of the front waist region in the natural state. When wearing a pants-type absorbent article, both legs are passed through the leg openings and the absorbent article is pulled up to the waist. At this time, the wearer or a fitting assistant (hereinafter referred to as the wearer) grasps the vicinity of the waist opening of the absorbent article and pulls it up while spreading the vicinity of the waist opening in the width direction. Therefore, the first rear waist region in the vicinity of the waist opening is easily subjected to a force spreading the absorbent article in the width direction by the wearer, and is less likely to get caught on the buttocks or the like when pulled up. However, the second rear waist region, which is located away from the waist opening, is less likely to be subjected to a force spreading the absorbent article 1 in the width direction by the wearer, and is easily caught on the bulge of the buttocks. According to this embodiment, the contractile force of the rear second waist region is lower than that of the rear intermediate region, and when the wearer spreads the absorbent article in the width direction, the rear waist region spreads smoothly and is less likely to get caught on the buttocks. In addition, the widthwise length of the rear waist region in the natural state is longer than the widthwise length of the front waist region in the natural state, so that it is possible to prevent the absorbent body from getting caught on the buttocks when pulled up by the side joints. Therefore, it is possible to prevent the absorbent body from getting caught on the buttocks when the absorbent article is pulled up. On the other hand, since the contractile force of the rear intermediate region adjacent to the rear second waist region is high, it is possible to ensure a fit when worn. Therefore, it is possible to improve the wearability by preventing the buttocks from getting caught while ensuring a fit when worn.

According to a preferred embodiment, the rear exterior body is made of a plurality of laminated exterior sheets. The high basis weight region, in which the total basis weight of the exterior sheets laminated in the thickness direction of the rear exterior body is the highest, is disposed in the rear intermediate region. According to this embodiment, the high basis weight region increases the rigidity of the rear intermediate region, and curling and twisting of the rear intermediate region are suppressed, thereby further suppressing catching on the buttocks.

According to a preferred embodiment, the high basis weight region is disposed across the rear intermediate region and the rear waist region, and across the rear edge of the absorbent body in the front-rear direction. According to this embodiment, the high basis weight region straddles the rear edge of the absorbent body, thereby increasing the rigidity of the rear exterior body near the rear edge of the absorbent body and preventing the rear edge of the absorbent body from getting caught.

According to a preferred embodiment, in an absorbent article in its natural state, the angle between a first imaginary line connecting the center of the side joint in the front-to-rear direction and the outer edge of the side joint in the front-to-rear direction and a width center line that passes through the center of the width of the absorbent article and is parallel to the front-to-rear direction is 35 degrees or less. According to this embodiment, the line extending from the center of the side joint in the front-to-rear direction to the waist opening side is not too inclined with respect to the width center line, so that the hand can be smoothly inserted inside the side joint, and the putting operation can be performed smoothly.

According to a preferred embodiment, in an absorbent article in its natural state, a first angle formed by a first virtual line connecting the center of the side joint in the front-rear direction and the outer edge of the side joint in the front-rear direction and a width center line passing through the center of the absorbent article in the width direction and parallel to the front-rear direction is θ1, and a second angle formed by a second virtual line connecting the center of the side joint in the front-rear direction and the inner edge of the side joint in the front-rear direction and a width center line passing through the center of the absorbent article in the width direction and parallel to the front-rear direction is θ2. The difference between θ1 and θ2 is 10 degrees or less. According to this embodiment, if the angle difference between the first virtual line and the second virtual line is large, the force at the time of pulling up is divided at the point where the angle changes significantly, and it may be difficult to transmit the force at the time of pulling up over the entire area of the exterior body in the front-rear direction. However, since the difference between θ1 and θ2 is 10 degrees or less, even if the upper end of the side joint is held and pulled up, the force is not divided midway and the force at the time of pulling up is easily applied to the entire exterior body. This allows for smooth installation operations.

According to a preferred embodiment, the rear outer body has a rear inner material located closer to the skin than the absorbent body. The rear inner material is arranged to straddle the rear end edge of the absorbent body in the front-to-rear direction. According to this embodiment, the skin side of the rear end edge of the absorbent body can be covered by the rear inner material, which further prevents the rear end edge of the absorbent body from getting caught.

According to a preferred embodiment, the front exterior body has a front inner material located closer to the skin than the absorbent body. The length of the rear inner material in the front-to-rear direction is longer than the length of the front inner material in the front-to-rear direction. According to this embodiment, the skin side of the absorbent body can be covered by the front inner material, and the absorbent body can be prevented from getting caught. Because the length of the rear inner material is longer than the front inner material, the rear waist region is less likely to roll up when the absorbent article is pulled up during wearing, and the buttocks can be prevented from getting caught.

According to a preferred embodiment, the rear outer body has a rear inner material located on the skin side of the absorbent body, and a rear outer material joined to the non-skin side of the absorbent body. The bending rigidity of the rear inner material in the front-rear direction is higher than the bending rigidity of the rear outer material in the front-rear direction. According to this embodiment, since the bending rigidity of the rear inner material in the front-rear direction is higher than the bending rigidity of the rear outer material in the front-rear direction, the rear inner material is less likely to curl up than the rear outer material. Therefore, when the absorbent body is deformed so as to expand in the thickness direction, the absorbent body is more likely to deform toward the non-skin side than the skin side. The occurrence of unevenness on the skin side of the absorbent article can be suppressed, and the absorbent article can be more effectively prevented from getting caught when pulled up. On the other hand, since the bending rigidity of the rear outer material is low, it is soft when touched by the wearer, etc., and a texture like underwear can be achieved.

According to a preferred embodiment, the rear outer body has a rear outer material joined to the non-skin side of the absorbent body, and a second rear outer material located on the non-skin side of the rear outer material. The bending rigidity of the rear outer material in the front-to-rear direction is higher than the bending rigidity of the second rear outer material in the front-to-rear direction. According to this embodiment, the rear outer material is less likely to curl up than the second rear outer material. Because the bending rigidity of the rear outer material in contact with the skin is high, unevenness is less likely to form, and snagging when the absorbent article is pulled up can be further suppressed.

According to a preferred embodiment, the adhesive that bonds the non-skin side of the absorbent body and the skin side of the rear outer body includes a skin-side adhesive applied to the absorbent body and a non-skin-side adhesive applied to the rear outer body. The coating pattern of the skin-side adhesive extends along the width direction. The coating pattern of the non-skin-side adhesive extends along the front-rear direction. According to this embodiment, since the coating pattern of the non-skin-side adhesive extends along the front-rear direction, when the outer body is pulled upward during wearing, the force can be transmitted to the absorbent body side via the non-skin-side adhesive along the up-down direction. In addition, the force transmitted to the absorbent body side can be transmitted to the entire width of the absorbent body via the skin-side adhesive that extends in the width direction. Therefore, when the outer body is pulled up, the entire width of the absorbent body can be pulled up.

According to a preferred embodiment, the first rear waist region is provided with a plurality of first elastic members that stretch in the width direction. The second rear waist region is provided with a second elastic member that stretches in the width direction. The spacing between the first elastic members in the front-to-rear direction is shorter than the spacing between the second elastic members in the front-to-rear direction. According to this embodiment, the thickness of the first rear waist region is likely to be thinner than the thickness of the second rear waist region, and a thickness difference is formed between the first rear waist region and the second rear waist region. This thickness difference makes it easier to grasp the part to be gripped when wearing, and allows the product to be gripped and pulled up at appropriate left and right positions (without vertical shifting of the gripping positions on the left and right). By pulling up the absorbent article without bias to the left and right, it is possible to further prevent the product from getting caught on the body.

According to a preferred embodiment, the front waist region has a first front waist region extending rearward from the waist opening, and a second front waist region located rearward of the first front waist region and having a smaller contractile force in the width direction than the first front waist region. The width direction length of the second rear waist region in the natural state of the absorbent article is longer than the width direction length of the second front waist region in the natural state. According to this embodiment, since the width direction length of the second rear waist region in the natural state is longer than the width direction length of the second front waist region in the natural state, it is possible to prevent the absorbent article from catching on the buttocks when pulled up during wearing. Therefore, it is possible to prevent the absorbent body from catching on the buttocks when the absorbent article is pulled up, causing the absorbent body to twist or turn up.

According to a preferred embodiment, the absorbent article is for adults. A wearer who wears an absorbent article for adults may not have sufficient muscle strength in their arms and legs, or may find it difficult to reach their hands backwards to release the buttocks from getting caught, which can lead to problems when putting the article on. According to this embodiment, the buttocks are prevented from getting caught, which can lead to problems when putting the article on, allowing the wearer to put the article on properly and smoothly.

(2) Overall Schematic Configuration of Absorbent Article A pants-type absorbent article 1 according to an embodiment will be described with reference to Figs. 1 to 5. The absorbent article 1 is, for example, a pants-type disposable diaper or a shorts-type sanitary napkin. The absorbent article 1 according to the embodiment is a pants-type disposable diaper. Fig. 1 is a schematic front view of the absorbent article according to the present embodiment. Fig. 2 is a schematic plan view of the absorbent article according to the present embodiment. Fig. 3 is a cross-sectional view taken along line A-A shown in Fig. 2. Fig. 4 is a schematic view of the absorbent article 1 worn by a wearer. Fig. 4 is a view showing the side of the absorbent article worn in an upright position. The line of the wearer's body is indicated by a dashed line BL. It should be noted that the drawings are schematic and that the ratios of the dimensions may differ from the actual ones. In the schematic cross-sectional views, the members may be spaced apart in the thickness direction T for the sake of convenience of explanation, but in the actual product, they are in contact with each other in the thickness direction T. In the present invention, the outer portion refers to a portion occupying a certain range in the width direction W including the outer edge in the width direction W, and the outer edge refers to the outer edge in the width direction W. In the present invention, the inner portion refers to a portion occupying a certain range in the width direction W including the inner edge in the width direction W, and the inner edge refers to the inner edge in the width direction W. In addition, the front end and rear end refers to a portion occupying a certain range in the front-to-back direction L including edges in the front-to-back direction L, and the front edge and rear edge are edges in the front-to-back direction L. The outer end includes the front end and rear end, and the outer edge includes the front edge and rear edge.

As shown in FIG. 1, the absorbent article 1 has a front-rear direction L and a width direction W perpendicular to the front-rear direction L. The front-rear direction L is defined by the direction extending from the front side to the rear side of the body. In other words, the front-rear direction L is the direction extending from the front to the rear side of the body in the unfolded absorbent article 1. Also, as shown in FIG. 3, the absorbent article 1 has a thickness direction T perpendicular to both the front-rear direction L and the width direction W. The thickness direction T extends to a skin-facing side T1 facing the wearer and a non-skin-facing side T2 opposite to the skin-facing side T1. The absorbent article 1 has a front waist region S1, a rear waist region S2, and a crotch region S3. The front waist region S1 is a region that is arranged around the front waist (abdomen) of the wearer. The rear waist region S2 is a region that is arranged on the back side of the wearer. The crotch region S3 is a region that is arranged between the front waist region S1 and the rear waist region and is arranged under the crotch of the wearer.

The absorbent article 1 may have an absorbent body 20 and an outer body 50. The absorbent body 20 may be configured as a separate body from the outer body 50. The absorbent body 20 has an absorbent core 21 and is arranged at least in the crotch region S3. The absorbent body 20 may extend in the front-rear direction L from the crotch region S3 to the front waist region S1, and may extend in the front-rear direction L from the crotch region S3 to the rear waist region S2. The absorbent body 20 may overlap the outer body 50 in the thickness direction T in the front waist region S1 and the rear waist region S2. The absorbent body 20 has an absorbent core 21 arranged at least in the crotch region S3. The absorbent core 21 includes an absorbent material that absorbs liquid. The absorbent core 21 may be covered by a core wrap 22. The absorbent body 20 may have a skin-facing sheet 25 located on the skin-facing side T1 of the absorbent core 21, a liquid-impermeable sheet 26 located on the non-skin-facing side T2 of the absorbent core 21, and a main body sheet 27 arranged on the non-skin-facing side T2 of the liquid-impermeable sheet 26. The skin-facing sheet 25 and the main body sheet 27 may be made of, for example, nonwoven fabric. The liquid-impermeable sheet 26 may be made of, for example, a film.

The outer casing 50 may have a front outer casing 51 that is laminated with the absorbent body 20 in the thickness direction T and disposed in the front waist region S1, and a rear outer casing 52 that is laminated with the absorbent body 20 in the thickness direction T and disposed in the rear waist region S2. At least a portion of the front outer casing 51 may overlap the absorbent body 20, and at least a portion of the rear outer casing 52 may overlap the absorbent body 20. The front outer casing 51 and the rear outer casing 52 may be separated in the front-rear direction L or may be connected. The length of the rear outer casing 52 in the front-rear direction L may be longer than that of the front outer casing 51. The rear outer casing 52 may be disposed across the rear waist region S2 and the crotch region S3. The center of the width direction W of the rear outer casing 52 may extend toward the crotch region S3 side beyond the side joint portion 16. As shown in FIG. 1, the absorbent article 1 has a side joint 16 that joins the front waist region S1 and the rear waist region S2. The side joint 16 is a portion that connects the outer portion of the front exterior body 51 that constitutes the front waist region S1 and the outer portion of the rear exterior body 52 that constitutes the rear waist region S2 to each other.

As shown in FIG. 1, when the side joints 16 are formed, the absorbent article 1 is formed with a waist opening 62 through which the wearer's torso passes and a pair of leg openings 66 through which the wearer's legs are inserted. The waist opening 62 may be defined by the front edge S1F of the front waist region S1 and the rear edge S2R of the rear waist region S2. Here, FIG. 2 shows a stretched state in which the joints at the side joints 16 are released and the absorbent article 1 is unfolded and stretched in the front-rear direction L and the width direction W. The side joints 16 may extend along the front-rear direction L in each of the front exterior body 51 and the rear exterior body 52. In the pants-type absorbent article 1, the boundary between the front waist region S1 and the crotch region S3 may be defined by the rear edge of the side joints 16 provided on the front exterior body 51. The boundary between the rear waist region S2 and the crotch region S3 may be defined by the front edge of the side joints 16 provided on the rear exterior body 52. The crotch region S3 may be an area in which leg openings 66 are provided. The leg openings 66 may be recessed inward in the width direction W from the outer edge of the absorbent article 1.

As shown in FIG. 3, the front outer body 51 and the rear outer body 52 may have multiple outer sheets such as nonwoven fabric. The outer sheet of the front outer body 51 may have a front outer material located on the non-skin side T2 of the absorbent body 20 and a front inner material 55 located on the skin side T1 of the absorbent body 20. There may be multiple front outer materials. The front outer material may have a first front outer material 53 joined to the non-skin side of the absorbent body 20 and a second front outer material 54 located on the non-skin side T2 of the first front outer material 53. The first front outer material 53 and the second front outer material 54 may be composed of the same sheet folded back, or may be composed of separate sheets. The front inner material 55 may be composed of a portion of at least one of the front outer materials folded back to the skin side T1, or may be composed of a sheet separate from the front outer material. The exterior sheet of the rear exterior body 52 may have a rear outer material located on the non-skin-facing side T2 of the absorbent body 20, and a rear inner material 58 located on the skin-facing side T1 of the absorbent body 20. There may be multiple rear outer materials. The rear outer material may have a first rear outer material 56 joined to the non-skin-facing side of the absorbent body 20, and a second rear outer material 57 located on the non-skin-facing side T2 of the first rear outer material 56. The first rear outer material 56 and the second rear outer material 57 may be made of the same sheet that is folded back, or may be made of separate sheets. In addition, the rear inner material 58 may be made of a portion where at least one of the rear outer materials is folded back to the skin-facing side T1, or may be made of a sheet that is separate from the rear outer material.

An elastic member that is stretchable in the width direction W may be disposed between the exterior sheets of the exterior body 50. The elastic member may be, for example, made of rubber thread that is stretchable in the width direction W, or an elastic sheet that is stretchable in the width direction W. Alternatively, the elastic member may be, for example, made of an exterior sheet itself that is made of a stretchable sheet. The elastic member in this embodiment is made of rubber thread. The elastic member 80 may have a first elastic member 81, a second elastic member 82 located closer to the crotch region S3 than the first elastic member 81, and a third elastic member 83 located closer to the crotch region S3 than the second elastic member 82. The stretch ratio of the first elastic member 81 may be different from the stretch ratio of the second elastic member 82 and may be different from the stretch ratio of the third elastic member 83. The stretch ratio of the second elastic member 82 may also be different from the stretch ratio of the third elastic member 83. The spacing of the first elastic members 81 in the front-rear direction L may be different from the spacing of the second elastic members 82 in the front-rear direction L, and may be different from the spacing of the third elastic members 83 in the front-rear direction L. The spacing of the second elastic members 82 in the front-rear direction L may be different from the spacing of the third elastic members 83 in the front-rear direction L. The first elastic members 81, the second elastic members 82, and the third elastic members 83 may be arranged to extend in the width direction W and be stretchable in the width direction W. In this embodiment, the first elastic members 81 and the second elastic members 82 are arranged on the front exterior body 51 and the rear exterior body 52, respectively, and are aligned along the width direction W. The third elastic member 83 is not arranged on the front exterior body 51, but is arranged on the rear exterior body 52. The third elastic member 83 is arranged across the rear waist region S2 and the crotch region S3, and the center of the width direction of the third elastic member 83 is curved so as to bulge toward the crotch region S3.

The first elastic member 81 is an elastic member located closest to the waist opening 62 among the multiple elastic members (first elastic member, second elastic member, and third elastic member). The first elastic member 81 may have a front first elastic member 811 arranged between the first front outer material 53 and the second front outer material 54, and a rear first elastic member 812 arranged between the first rear outer material 56 and the second rear outer material 57. The front first elastic member 811 and the rear first elastic member 812 of this embodiment may each be provided with six pieces of 940 dtex rubber with an elongation ratio of 2.8 times. The front first elastic member 811 may be arranged in the front first waist region F111 described later, and the rear first elastic member 812 may be arranged in the rear first waist region R111 described later.

The second elastic member 82 may have a front second elastic member 821 arranged between the first front outer material 53 and the second front outer material 54, and a rear second elastic member 822 arranged between the first rear outer material 56 and the second rear outer material 57. The front second elastic member 821 may be arranged in the front second waist region F112, the front middle region F12, and the front leg side region F13 described later. In this embodiment, the front second elastic member 821 has nine 620 dtex rubber strands arranged with a stretch ratio of 2.4 times, and five 780 dtex rubber strands arranged with a stretch ratio of 2.4 times on the crotch region S3 side of the nine rubber strands. The front edge of the absorbent core 21 is arranged at the boundary between the nine rubber strands and the five rubber strands. That is, the elongation ratio of the front second elastic member 821 in the area overlapping with the absorbent core 21 is higher than the elongation ratio of the front second elastic member 821 in the area not overlapping with the absorbent core 21 (the area forward of the front edge of the absorbent core). The front edge 20F of the absorbent body 20 overlaps with the area in which nine rubber threads are arranged. Therefore, the elongation ratio of the front second elastic member is the same on the front and rear sides of the front edge 20F of the absorbent body 20 as the boundary.

The rear second elastic member 822 may be arranged in the rear second waist region R112, the rear middle region R12, and the rear leg side region R13, which will be described later. In the rear second elastic member 822 of this embodiment, five 620 dtex rubber strands are arranged with an elongation ratio of 2.4 times, and ten 780 dtex rubber strands are arranged with an elongation ratio of 2.4 times on the crotch region S3 side of the five rubber strands. The rear edge of the absorbent body 20 is arranged at the boundary between the five rubber threads and the ten rubber threads. That is, the elongation ratio of the rear second elastic member 822 in the area overlapping with the absorbent body 20 is higher than the elongation ratio of the rear second elastic member 822 in the area not overlapping with the absorbent body 20 (the area behind the rear edge of the absorbent body). The rear edge 21R of the absorbent core 21 overlaps with the area where the ten rubber threads are arranged. Therefore, the extension ratio of the rear second elastic members 822 is the same on the front and rear sides of the rear end edge 20R of the absorbent core 21. The number of rear second elastic members 822 is greater than the number of front second elastic members 821. The spacing in the front-rear direction L of the front first elastic members 811 is shorter than the spacing in the front-rear direction L of the front second elastic members 821. The spacing in the front-rear direction L of the rear first elastic members 812 is shorter than the spacing in the front-rear direction L of the rear second elastic members 822.

The absorbent article 1 according to the present embodiment is configured to suppress the buttocks from getting caught when worn and improve wearability. Next, the configuration for suppressing the buttocks from getting caught when worn and improving wearability will be described in detail. The absorbent article 1 has a plurality of regions. Each region is the entire absorbent article 1 (the region including the outer body 50 and the absorbent body 20). The front waist region S1 may have a front waist region F11 arranged between the waist opening 62 of the front waist region S1 and the front edge 20F of the absorbent body 20, a front middle region F12 arranged between the front edge 20F of the absorbent body 20 and the front edge 21F of the absorbent core 21, and a front leg side region F13 located between the front edge 21F of the absorbent core 21 and the rear edge of the side joint 16 of the front waist region S1. The front waist region F11 may have a first front waist region F111 extending rearward from the waist opening 62, and a second front waist region F112 located rearward of the first front waist region F111 and having a smaller contractile force in the width direction than the first front waist region F111. In this embodiment, the first front waist region F111 is an area in which a first front elastic member 811 is disposed, and the second front waist region F112 is an area in which a second front elastic member 821 is disposed. The boundary between the first front waist region F111 and the second front waist region F112 may be the position of the first front elastic member 811 located closest to the crotch. The rear outer body 52 may have a rear waist region R11 disposed between the waist opening 62 of the rear waist region S2 and the rear edge 20R of the absorbent main body 20, a rear intermediate region R12 disposed between the rear edge 20R of the absorbent main body 20 and the rear edge 21R of the absorbent core 21, and a rear leg side region R13 located between the rear edge 21R of the absorbent core 21 and the front edge of the side joint 16 of the rear waist region S2. The rear waist region R11 may have a rear first waist region R111 extending forward from the waist opening 62, and a rear second waist region R112 located forward of the rear first waist region R111 and having a smaller contractile force in the width direction W than the rear first waist region R111. In this embodiment, the rear first waist region R111 is a region where the rear first elastic member 812 is disposed, and the rear second waist region R112 is a region where the rear second elastic member 822 is disposed. The boundary between the first rear waist region R111 and the second rear waist region R112 may be the position of the first rear elastic member 812 located closest to the crotch.

The contractile force in the width direction W of the second rear waist region R112 is smaller than that in the width direction W of the rear intermediate region R12. The "contractile force" of each region is measured by the following method. First, a test specimen to be measured is prepared. The side joint 16 of the absorbent article 1 is released, and the absorbent article 1 is unfolded. When the absorbent body 20 is joined to the front waist region S1 and the rear waist region S2, the joint is not released, but cut into each region to obtain a test specimen. Next, the length in the width direction W and the length in the front-rear direction L are measured in the stretched state in which the absorbent article 1 is stretched, a line is drawn at the boundary, and a test specimen is cut out. Both ends of the cut-out test specimen are clamped by the chucks (clamping tool) of the tensile tester. At this time, the distance between the chucks is 150 mm. Next, while one of the chucks in the width direction W is fixed, the other chuck is moved to change the distance between the chucks. The moving speed of the chuck at this time is 300 mm/min. While the chuck is moving, the stress on the chuck is measured, and the stress (N) obtained when the chuck is stretched to 60% (constant width) is defined as the "contraction force." In this way, the contraction force in the width direction of each region can be obtained. When comparing the magnitude of the contraction force of each region, if the regions have different front-to-back lengths, the front-to-back length of the other test piece is cut to match the test piece with the shorter front-to-back length so that the front-to-back lengths of the test pieces are the same.

The length in the width direction W of the rear waist region R11 in the natural state of the absorbent article 1 is longer than the length in the width direction W of the front waist region F11 in the natural state. Therefore, as shown in FIG. 4, when the absorbent article 1 is worn, the side joints 16 are biased forward when compared with the wearer's side (part extending downward from the armpit) BL1 as the base point. When pulling up the absorbent article 1, the left and right side joints 16 are generally grasped with the left and right hands, respectively, and pulled up. Since the length in the width direction W of the rear waist region R11 in the natural state is longer than the length in the width direction W of the front waist region F11 in the natural state, the length of the rear waist region S2 in the waist region (front waist region and rear waist region) extending from the waist opening 62 to the crotch region side is longer than the length of the front waist region S1, and the side joints 16 can be used to prevent the buttocks from being caught when pulled up. Therefore, when the absorbent article 1 is pulled up, the absorbent main body 20 can be prevented from getting caught on the buttocks and twisting or turning up. Preferably, the length in the width direction W of the rear second waist region R112 in the natural state of the absorbent article may be longer than the length in the width direction W of the front second waist region F112 in the natural state. According to this embodiment, since the length in the width direction W of the rear second waist region R112 in the natural state is longer than the length in the width direction W of the front second waist region F112 in the natural state, it is possible to prevent the absorbent article 1 from getting caught on the buttocks when pulled up during wearing. Therefore, it is possible to prevent the absorbent main body 20 from getting caught on the buttocks and twisting or turning up when the absorbent article 1 is pulled up.

The length of the width direction W of each region can be measured by the following method. The side joints 16 of the absorbent article 1 are released to separate the front waist region S1 and the rear waist region S2. The absorbent article 1 is left for 2 hours in an environment with a temperature of 23°C ± 2°C and a humidity of 50% ± 5%, and then the absorbent article 1 is stretched until no wrinkles are visible. In each of the front waist region F11 and the rear waist region R11, marks are made at 10 mm intervals in the front-to-back direction from the waist opening 62, and lines are drawn passing through the marks in the width direction. In each of the front second waist region F112 and the rear second waist region R112, marks are made at 10 mm intervals in the front-to-back direction from the waist opening 62, and lines are drawn passing through the marks in the width direction. In addition, when the absorbent body 20 is joined to the front waist region S1 and the rear waist region S2, the front waist region F11 and the rear waist region R11 are cut out to obtain a test piece without releasing the joining, and the front second waist region F112 and the rear second waist region R112 are cut out to obtain a test piece. The test piece is placed on a stand and left for 60 minutes to make the test piece natural. Next, a 5 mm acrylic plate is placed on the test piece, the test piece is sandwiched between the stand and the acrylic plate, and the width direction length of the test piece is measured. This width direction length is measured by measuring the length of the line drawn along the width direction in the above-mentioned stretched state. Therefore, the length in the natural state is measured multiple times in each region. If the test piece is curved, the soft tape measure is curved to measure. In addition, when an absorbent is arranged in a region, it is difficult to sandwich the test piece between the stand and the acrylic plate due to the thickness of the absorbent, so if the thickness of the absorbent core is 3 mm or more, the absorbent core is removed and measured. The average measurements taken in the front waist region are compared with the average measurements taken in the back waist region.

The contractile force in the width direction W of the rear second waist region R112 is smaller than the contractile force in the width direction of the rear intermediate region R12. When wearing the pants-type absorbent article 1, both legs are passed through the leg openings 66, and the absorbent article 1 is pulled up to the waist. At this time, the wearer or the wearing assistant (hereinafter referred to as the wearer) grasps the vicinity of the waist opening 62 of the absorbent article 1 and pulls it up while spreading the vicinity of the waist opening 62 in the width direction. Therefore, the rear first waist region R111 near the waist opening 62 is easily subjected to the force of the wearer spreading the absorbent article 1 in the width direction W, and is not easily caught by the buttocks when pulled up. However, the rear second waist region R112, which is located away from the waist opening 62, is not easily subjected to the force of the wearer spreading the absorbent article 1 in the width direction, and it is easily caught by the bulge of the buttocks. If the rear second waist region R112 gets caught on the buttocks, the rear end of the absorbent body 20 may twist or turn up, making it difficult to properly position the absorbent body 20 to cover the body. According to this embodiment, the contractile force of the rear second waist region R112 is lower than that of the rear intermediate region R12, so that when the wearer spreads the absorbent article 1 in the width direction W, the rear second waist region R112 spreads smoothly and is less likely to get caught on the buttocks. On the other hand, the contractile force of the rear intermediate region R12 adjacent to the rear second waist region R112 is high, so that a good fit when worn can be ensured. Therefore, the wearability can be improved by preventing the buttocks from getting caught while ensuring a good fit when worn.

The distance in the front-rear direction L of the first rear elastic member 812 may be shorter than the distance in the front-rear direction L of the second rear elastic member 822. According to this embodiment, the thickness of the first rear waist region R111 is likely to be thinner than the thickness of the second rear waist region R112. That is, a thickness difference is formed between the first rear waist region R111 and the second rear waist region R112. This thickness difference makes it easier to grasp the part to be gripped when wearing, and allows the wearer to grip and pull up at an appropriate position on the left and right (without shifting the gripping positions on the left and right up and down). By pulling up the absorbent article 1 without bias to the left and right, it is possible to further prevent the absorbent article 1 from getting caught on the body. In addition, the stretch ratio of the first rear elastic member 812 may be higher than the stretch ratio of the second rear elastic member 822. Even in this embodiment, the thickness of the first rear waist region R111 is likely to be thinner than the thickness of the second rear waist region R112, improving operability when pulling up.

Similarly, the distance in the front-rear direction L of the front first elastic member 811 may be shorter than the distance in the front-rear direction L of the front second elastic member 821. According to this embodiment, the thickness of the front first waist region F111 is likely to be thinner than the thickness of the front second waist region F112. That is, a thickness difference is formed between the front first waist region F111 and the front second waist region F112. This thickness difference makes it easier to grasp the part to be gripped when wearing, and allows the user to grip and pull up at an appropriate position on the left and right (without shifting the gripping positions on the left and right up and down). By pulling up the absorbent article without bias on the left and right, it is possible to further prevent the absorbent article from getting caught on the body. In addition, the stretch ratio of the front first elastic member 811 may be higher than the stretch ratio of the front second elastic member 821. Even in this embodiment, the thickness of the front first waist region F111 is likely to be thinner than the thickness of the front second waist region F112, improving operability when pulling up.

Figure 5 is a schematic diagram showing an absorbent article in its natural state placed on a table. In the absorbent article in its natural state, the angle θ1 formed by the first virtual line FL1 connecting the center 16CL of the side joint 16 in the front-rear direction L and the outer edge 16G of the side joint 16 in the front-rear direction L, and the width center line 1CW passing through the center of the width direction W of the absorbent article 1 and parallel to the front-rear direction L may be 35 degrees or less. The angle is measured while placed on the table as shown in Figure 5. More specifically, the absorbent article 1 is left on the table for 2 hours in an environment with a temperature of 23°C ± 2°C and a humidity of 50% ± 5%, and then a 1 kg weight 100 is placed across the center of the absorbent article in the width direction and the front-rear direction, and the outer edge of the absorbent article is measured based on the line 1CL parallel to the width center (by placing a ruler on the outer edge of the absorbent article). The center 16CL of the side joint 16 in the front-to-rear direction L is the center position of the outer edge of the side joint in the front-to-rear direction L. According to this embodiment, the line extending from the center 16CL of the side joint 16 in the front-to-rear direction toward the waist opening 62 is not inclined too much with respect to the width center line, so that the hand can be smoothly inserted inside the side joint, and the putting on operation can be performed smoothly.

In an absorbent article in its natural state, the first angle between the first virtual line FL1 connecting the center 16CL of the side joint 16 in the front-rear direction L and the outer edge 16G of the side joint in the front-rear direction and the width center line 1CW is θ1, and the second angle between the second virtual line FL2 connecting the center 16CL of the side joint in the front-rear direction and the inner edge 16H of the side joint in the front-rear direction and the width center line 1CW is θ2. If the angle difference between the first virtual line FL1 connecting the center 16CL of the side joint in the front-rear direction and the outer edge of the side joint and the second virtual line FL2 connecting the center 16CL of the side joint in the front-rear direction and the inner edge 16H of the side joint is large, the force when pulling up is divided at the point where the angle changes significantly, and the force when pulling up may not be easily transmitted over the entire front-rear direction of the exterior body. However, because the difference between θ1 and θ2 is 10 degrees or less, even when the upper end of the side joint is held and pulled up, the force is not interrupted midway and the force can be easily applied to the entire exterior body when pulling up. This allows for a smooth installation operation. Also, θ1 may be greater than θ2. In other words, the first virtual line may be more inclined with respect to the width center line than the second virtual line FL2.

The rear exterior body 52 may have a rear high basis weight region R72 in which the total basis weight of the exterior sheets stacked in the thickness direction T in the rear exterior body 52 is the highest. The rear high basis weight region R72 constitutes the "high basis weight region" of the present invention, and is the region in which the basis weight of the sheets is the highest when the basis weights are summed up. In this embodiment, the first rear outer material 56 and the second rear outer material 57 are arranged over the entire area of the rear exterior body 52, and the rear inner material 58 is arranged partially. Therefore, the area in which the rear inner material 58 is arranged constitutes the rear high basis weight region R72. In FIG. 2, the rear high basis weight region R72 is indicated by oblique lines. The rear high basis weight region R72 is arranged across the left and right side joints 16 and is arranged over the entire area of the rear exterior body 52. The rear high basis weight region R72 may be arranged in at least a part of the rear intermediate region R12. If the rear intermediate region R12 of the rear outer body 52 becomes twisted or creased, the thickness of the rear outer body 52 increases and irregularities are formed on the inner surface of the absorbent article 1, making it easier for the absorbent article 1 to get caught on the buttocks. However, according to this embodiment, the rear high basis weight region R72 increases the rigidity of the rear intermediate region R12 and suppresses curling and twisting of the rear intermediate region R12, thereby further suppressing the rear intermediate region R12 from getting caught on the buttocks.

Preferably, the rear high basis weight region R72 may be arranged across the rear intermediate region R12 and the rear waist region R11, and across the rear edge 20R of the absorbent body 20 in the front-rear direction L. The boundary between the rear intermediate region R12 and the rear waist region R11 is the rear edge 20R of the absorbent body 20, and the thickness of the absorbent article 1 varies depending on whether or not the absorbent body 20 is present, with the rear edge 20R of the absorbent body 20 as the boundary. There is a risk of the buttocks getting caught due to the thickness difference caused by the presence or absence of the absorbent body 20. However, according to this embodiment, the rear high basis weight region R72 straddles the rear edge 20R of the absorbent body 20, thereby increasing the rigidity of the rear exterior body 52 in the vicinity of the rear edge 20R of the absorbent body 20, and preventing the rear edge 20R of the absorbent body 20 from getting caught. In addition, the length in the front-to-rear direction of the rear high basis weight region R72 in the rear waist region R11 may be longer than the length in the front-to-rear direction of the rear high basis weight region R72 in the rear intermediate region R12. This makes it easier to form the rear waist region R11 into a flat shape, and makes it easier to pull up the absorbent article more smoothly from the waist opening 62 side.

The front exterior body 51 may have a front high basis weight region R71 in which the total basis weight of the exterior sheets stacked in the thickness direction T in the front exterior body 51 is the highest. In this embodiment, the first front outer material 53 and the second front outer material 54 are arranged over the entire area of the front exterior body 51, and the front inner material 55 is arranged partially. Therefore, the area in which the front inner material 55 is arranged constitutes the front high basis weight region R71. In FIG. 2, the front high basis weight region R71 is shown with diagonal lines. The front high basis weight region R71 is arranged across the left and right side joints 16 and is arranged over the entire area of the front exterior body 51. The front high basis weight region R71 may be arranged in at least a part of the front intermediate region F12. According to this embodiment, the front high basis weight region R71 increases the rigidity of the front intermediate region F12 and suppresses curling and twisting of the front intermediate region F12, thereby suppressing catching on the bulge of the abdomen. The front high basis weight region R71 may be disposed across the front intermediate region F12 and the front waist region F11. This increases the rigidity of the front exterior body 51 near the front edge 20F of the absorbent body 20, and prevents the front edge 20F of the absorbent body 20 from getting caught. The length in the front-to-rear direction of the rear high basis weight region R72 may be longer than the length in the front-to-rear direction of the front high basis weight region R71. This configuration prevents the inner surface of the rear exterior body 52 from curling, and further prevents the buttocks from getting caught in the rear waist region.

The rear inner material 58 may be disposed across the rear edge 20R of the absorbent body 20 in the front-rear direction. According to this embodiment, the rear inner material 58 can cover the skin side of the rear edge 20R of the absorbent body 20, which can further prevent the rear edge 20R of the absorbent body 20 from getting caught. The rear edge 58R of the rear inner material 58 is located rearward of the rear edge 20R of the absorbent body 20, and the front edge 58F of the rear inner material 58 may be located forward of the rear edge 20R of the absorbent body 20 and rearward of the rear edge 21R of the absorbent core 21.

The front inner material 55 may be disposed across the front edge 20F of the absorbent body 20 in the front-rear direction. According to this embodiment, the front inner material 55 can cover the skin side of the front edge 20F of the absorbent body 20, and the front edge 20F of the absorbent body 20 can be prevented from getting caught. The front edge 55F of the front inner material 55 may be located forward of the front edge 20F of the absorbent body 20, and the rear edge 55R of the front inner material 55 may be located rearward of the front edge 20F of the absorbent body 20 and forward of the front edge 21F of the absorbent core 21. The length L of the rear inner material 58 in the front-rear direction may be longer than the length L of the front inner material 55 in the front-rear direction. According to this embodiment, since the length of the rear inner material is longer than the front inner material, the rear waist area is less likely to fold when the absorbent article is pulled up during wearing, and the buttocks can be prevented from getting caught.

The bending stiffness of the rear inner material 58 in the front-rear direction L may be higher than the bending stiffness of the first rear outer material 56 joined to the absorbent body 20 in the front-rear direction L. According to this embodiment, the rear inner material 58 is less likely to fold than the first rear outer material 56. Therefore, when the absorbent body 20 is deformed to swell in the thickness direction T, the absorbent body 20 is more likely to deform to the non-skin side T2 than the skin side T1. The occurrence of unevenness on the skin side T1 of the absorbent article 1 is suppressed, and the absorbent article 1 is more likely to be caught when pulled up. On the other hand, since the bending stiffness of the first rear outer material 56 is low, it is soft when touched by the wearer, etc., and a texture like underwear can be achieved. Similarly, the bending stiffness of the front inner material 55 in the front-rear direction L may be higher than the bending stiffness of the first front outer material 53 joined to the absorbent body 20 in the front-rear direction L. According to this embodiment, the front inner material 55 is less likely to curl than the first front outer material 53, which suppresses the occurrence of unevenness on the skin-facing side T1 of the absorbent article 1 and further suppresses the absorbent article from getting caught when pulled up. On the other hand, since the first front outer material 53 has low bending rigidity, it is soft when touched by the wearer, and has a texture similar to that of underwear. The bending rigidity of the sheet can be measured using a digital force gauge 200gf (2N) (manufactured by SHIMPO, model number FGP-0.2) and a force gauge stand (manufactured by SHIMPO, model number GS-50X-H).

The bending rigidity of the first rear outer material 56 in the front-rear direction L may be higher than the bending rigidity of the second rear outer material 57 in the front-rear direction L. According to this aspect, the first rear outer material 56 is less likely to curl than the second rear outer material 57. Because the bending rigidity of the first rear outer material 56 that contacts the skin is high, unevenness is less likely to form, and the absorbent article can be more effectively prevented from getting caught when pulled up. Similarly, the bending rigidity of the first front outer material 53 in the front-rear direction L may be higher than the bending rigidity of the second front outer material 54 in the front-rear direction. According to this aspect, the first front outer material 53 is less likely to curl than the second front outer material 54. Because the bending rigidity of the first front outer material 53 that contacts the skin is high, unevenness is less likely to form, and the absorbent article can be more effectively prevented from getting caught when pulled up.

The non-skin side of the absorbent body and the outer body may be joined via an adhesive. The adhesive for bonding the skin side of the rear outer body may include a skin side adhesive applied to the absorbent body 20 and a non-skin side adhesive applied to the rear outer body 52. The coating pattern of the skin side adhesive may extend along the width direction, and the coating pattern of the non-skin side adhesive may extend along the front-rear direction. Similarly, the adhesive for bonding the skin side of the front outer body 51 may include a skin side adhesive applied to the absorbent body 20 and a non-skin side adhesive applied to the front outer body 51. The coating pattern of the skin side adhesive may extend along the width direction W, and the coating pattern of the non-skin side adhesive may extend along the front-rear direction L. According to this embodiment, since the coating pattern of the non-skin side adhesive extends along the front-rear direction, when the outer body is pulled upward during wearing, a force can be transmitted to the absorbent body side via the non-skin side adhesive along the up-down direction. In addition, the force transmitted to the absorbent body can be transmitted to the entire width of the absorbent body via the skin-side adhesive that extends in the width direction. Therefore, when the outer body is pulled up, the entire width of the absorbent body can be pulled up.

The absorbent article may be an absorbent article for adults. Specifically, an absorbent article for adults is, for example, an absorbent article in which the ratio of the width direction W dimension of the absorbent body 20 to the width direction W dimension of the absorbent article 1 in a natural state is 50% or less. The width direction W dimension of the absorbent article 1 and the width direction W dimension of the absorbent body 20 are measured, for example, at approximately the midpoint in the front-to-back direction L of the front waist region S1 or the rear waist region S2 in the natural state. Wearers who wear absorbent articles for adults tend to have insufficient muscle strength in their arms and legs, have difficulty reaching their hands to the rear to correct the buttocks getting caught, and are prone to problems in putting on the article. The absorbent article of this embodiment suppresses the buttocks getting caught and suppresses problems in putting on the article, allowing the wearer to put it on properly and smoothly.

Although the present invention has been described in detail using the above-mentioned embodiment, it is clear to those skilled in the art that the present invention is not limited to the embodiment described in this specification. The present invention can be implemented in modified and altered forms without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description in this specification is intended to be illustrative and does not have any limiting meaning on the present invention.

It is possible to provide a pants-type absorbent article that prevents the buttocks from getting caught when worn and improves fit.

1: Absorbent article 16: Side joint portion 20: Absorbent body 21: Absorbent core 51: Front exterior body 52: Rear exterior body 53: First front outer material 54: Second front outer material 55: Front inner material 56: First rear outer material (rear outer material)
57: Second rear outer material 58: Rear inner material 62: Waist opening 80: Elastic member 81: First elastic member 811: First front elastic member 812: First rear elastic member 82: Second elastic member 821: Second front elastic member 822: Second rear elastic member F11: Front waist region F111: First front waist region F112: Second front waist region F12: Front intermediate region F13: Front leg side region R11: Rear waist region R111: First rear waist region R112: Second rear waist region R12: Rear intermediate region R13: Rear leg side region R71: Front high basis weight region R72: Rear high basis weight region (high basis weight region)
S1: Front waist region S2: Rear waist region S3: Crotch region L: Front-rear direction T: Thickness direction T1: Skin-facing side T2: Non-skin-facing side W: Width direction

Claims (13)

A front-rear direction and a width direction perpendicular to each other;
an absorbent body having an absorbent core and disposed at least in the crotch region;
A rear outer body that is laminated with the absorbent body in the thickness direction and is arranged in a rear waist region;
a front exterior body that is laminated with the absorbent body in the thickness direction and is disposed in a front waist region;
A pants-type absorbent article having a side joining portion joining the front outer body and the rear outer body,
a rear waist region disposed between a waist opening of the rear waist region and a rear edge of the absorbent body, a rear intermediate region disposed between the rear edge of the absorbent body and a rear edge of the absorbent core, and a front waist region disposed between a waist opening of the front waist region and a front edge of the absorbent body,
the rear waist region includes a rear first waist region extending forward from the waist opening of the rear waist region, and a rear second waist region located forward of the rear first waist region and having a smaller contractile force in the width direction than the rear first waist region;
a contractile force in the width direction of the second rear waist region is smaller than a contractile force in the width direction of the rear intermediate region;
A pants-type absorbent article, wherein the widthwise length of the rear waist region in the natural state of the absorbent article is longer than the widthwise length of the front waist region in the natural state. The rear exterior body is formed by laminating a plurality of exterior sheets,
The pants-type absorbent article according to claim 1 , wherein a high basis weight region in which the total basis weight of the exterior sheets laminated in the thickness direction in the rear exterior body is the highest is disposed in the rear intermediate region. The pants-type absorbent article according to claim 2, wherein the high basis weight region is disposed across the rear intermediate region and the rear waist region, and is disposed across the rear end edge of the absorbent body in the front-to-rear direction. A pants-type absorbent article according to any one of claims 1 to 3, wherein, in the absorbent article in its natural state, an angle formed between a first imaginary line connecting the center in the front-rear direction of the side joint portion and the outer edge in the front-rear direction of the side joint portion and a width center line passing through the center in the width direction of the absorbent article and parallel to the front-rear direction is 35 degrees or less. In the absorbent article in its natural state, a first angle formed by a first imaginary line connecting a center of the side joint portion in the front-rear direction and an outer edge of the side joint portion in the front-rear direction and a width center line passing through a center of the absorbent article in the width direction and parallel to the front-rear direction is defined as θ1;
In the absorbent article in its natural state, a second angle formed by a second imaginary line connecting the center of the side joint portion in the front-rear direction and the inner end edge of the side joint portion in the front-rear direction and a width center line passing through the center of the absorbent article in the width direction and parallel to the front-rear direction is defined as θ2.
The pants-type absorbent article according to claim 1 , wherein the difference between θ1 and θ2 is 10 degrees or less. The rear exterior body has a rear inner material located closer to the skin than the absorbent main body,
The pants-type absorbent article according to claim 1 , wherein the rear inner material is disposed across the rear end edge of the absorbent main body in the front-rear direction. The front exterior body has a front inner material located closer to the skin than the absorbent main body,
The pants-type absorbent article according to claim 6 , wherein a length of the rear inner material in the front-rear direction is longer than a length of the front inner material in the front-rear direction. The rear exterior body has a rear inner material located on the skin side of the absorbent main body, and a rear outer material joined to a non-skin side of the absorbent main body,
The pants-type absorbent article according to claim 1 , wherein a bending stiffness of the rear inner material in the front-rear direction is higher than a bending stiffness of the rear outer material in the front-rear direction. The rear exterior body has a rear outer material joined to a non-skin surface of the absorbent main body, and a second rear outer material located on the non-skin surface side of the rear outer material,
The pants-type absorbent article according to claim 1 , wherein a bending stiffness in the front-rear direction of the rear outer material is higher than a bending stiffness in the front-rear direction of the second rear outer material. the adhesive for bonding the non-skin side of the absorbent body and the skin side of the rear exterior body includes a skin side adhesive applied to the absorbent body and a non-skin side adhesive applied to the rear exterior body;
the skin side adhesive application pattern extends along the width direction;
The pants-type absorbent article according to claim 1 , wherein a coating pattern of the non-skin side adhesive extends along the front-to-rear direction. A plurality of first elastic members that are stretchable in the width direction are disposed in the first rear waist region,
A second elastic member that stretches in the width direction is disposed in the second rear waist region,
The pants-type absorbent article according to claim 1 , wherein a distance between the first elastic members in the front-rear direction is shorter than a distance between the second elastic members in the front-rear direction. the front waist region includes a front first waist region extending rearward from the waist opening of the front waist region, and a front second waist region located rearward of the front first waist region and having a smaller contractile force in the width direction than the front first waist region;
12. A pants-type absorbent article according to claim 1, wherein the widthwise length of the rear second waist region in the natural state of the absorbent article is longer than the widthwise length of the front second waist region in the natural state. The pants-type absorbent article according to any one of claims 1 to 12, wherein the absorbent article is for adults.

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