Absorbent article

Abstract

To provide an absorbent article easily retaining absorption performance of an absorbent core while suppressing solution residual of a top sheet.SOLUTION: An absorbent article (1) comprises a liquid permeable top sheet (11), a liquid impermeable back sheet (21) and an absorbent core (31) arranged between the top sheet and the back sheet. A liquid permeation adjustment part (300) having low liquid permeability with a transfer speed of body fluid from a skin side to a non-skin side lower than that of the periphery, or liquid impermeability not permitting permeation of body fluid from the skin side to the non-skin side is disposed at the non-skin side from the non-skin surface of the top sheet, and the skin side from the non-skin surface of the absorbent core. The liquid permeation adjustment part is arranged in a width central region (RC1) positioned in the center in the width direction among regions made by equally dividing the absorbent core into three regions in the width direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an absorbent article. [Background technology]

[0002] Patent Document 1 discloses an absorbent article having a liquid permeation control section. The liquid permeation control section of Patent Document 1 is provided on a top sheet. The top sheet is made of a spunlace nonwoven fabric made of 100% cotton fiber by weight coated with a water repellent, and at least in the portion corresponding to the excretion opening, a large number of openings penetrating from the front to the back are formed in a vertically elongated shape that is long in the longitudinal direction of the absorbent article. The area to which the water repellent is applied has a low water absorbency on the skin contact surface, and the absorption performance of body fluids is lower than that of the surrounding area. In addition, the openings guide body fluids to the non-skin side, thereby suppressing liquid residue on the top sheet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-99558 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned absorbent articles have the following problems. Of the body fluids discharged onto the top sheet, those that are guided to the non-skin side through the perforations do not remain on the top sheet, and the remaining liquid on the top sheet can be suppressed. However, the body fluids on the areas where the water repellent agent is applied are difficult to be drawn into the top sheet, and the body fluids tend to remain on the top sheet. Therefore, there is a risk of skin trouble due to the body fluids remaining on the top sheet.

[0005] In addition, the body fluids drawn in through the holes in the top sheet are guided to the absorbent core and are retained by the absorbent core. The applicant's intensive research has revealed that the rigidity and thickness of the absorbent core change as it absorbs body fluids. The absorbent core after absorbing body fluids cannot maintain its rigidity and thickness compared to the absorbent core before absorption, and may not be able to maintain the desired state even after use.

[0006] The present invention has been made in consideration of such problems, and has an object to provide an absorbent article which can easily maintain the absorption performance of the absorbent core while suppressing liquid residue on the top sheet. [Means for solving the problem]

[0007] The absorbent article according to one embodiment has a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid permeation adjusting section is provided on the non-skin side of the top sheet and on the skin side of the absorbent core. The liquid permeation adjusting section has low liquid permeability, which allows bodily fluids to migrate from the skin side to the non-skin side at a slower rate than the surrounding area, or liquid impermeability, which does not allow bodily fluids to pass from the skin side to the non-skin side. The liquid permeation adjusting section is disposed in a widthwise central region that is located in the center of the width direction among three equal regions obtained by dividing the absorbent core in the width direction.

[0008] The absorbent article according to another embodiment has a liquid permeable top sheet, a liquid impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid permeation adjusting section is provided on the non-skin side of the top sheet and on the skin side of the absorbent core, the liquid permeation adjusting section having low liquid permeability, which allows bodily fluids to migrate from the skin side to the non-skin side at a slower rate than the surrounding area, or liquid impermeability, which does not allow bodily fluids to pass from the skin side to the non-skin side. The liquid permeation adjusting section is provided in the absorbent core. The absorption capacity per unit area of ​​the absorbent core provided with the liquid permeation adjusting section is lower than the absorption capacity per unit area of ​​the absorbent core around the liquid permeation adjusting section. The rigidity of the absorbent article in the region where the liquid permeation adjusting section is disposed is higher than the rigidity of the absorbent article in the region around the liquid permeation adjusting section.

[0009] An absorbent article according to still another embodiment has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid-permeability adjusting section having low liquid permeability, which allows bodily fluids to migrate from the skin side to the non-skin side at a slower rate than the surrounding area, or liquid impermeability, which does not allow bodily fluids to pass from the skin side to the non-skin side, and a test member for testing the health condition of a wearer are provided on the non-skin side of the top sheet and the skin side of the absorbent core, and a test member for testing the health condition of a wearer. The liquid-permeability adjusting section is constituted by a liquid-impermeable sheet disposed so as to overlap the test member in the thickness direction. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a plan view of an absorbent article according to a first embodiment, as viewed from the skin side. [Diagram 2] FIG. 2 is a plan view of the absorbent article according to the first embodiment as viewed from the non-skin side. [Diagram 3] FIG. 3 is a cross-sectional view taken along the line PP shown in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line QQ shown in FIG. [Diagram 5] FIG. 5 is a diagram showing an absorbent article according to a modified example. [Figure 6] FIG. 6 is a plan view of an absorbent article according to a second embodiment, as viewed from the skin side. [Figure 7] FIG. 7 is a plan view of the absorbent article according to the second embodiment, as viewed from the non-skin side. [Figure 8] FIG. 8 is a cross-sectional view taken along the line AA shown in FIG. [Figure 9] FIG. 9 is a cross-sectional view taken along the line BB shown in FIG. [Figure 10] FIG. 10 is a cross-sectional view taken along line CC shown in FIG. [Figure 11] FIG. 11 is an enlarged view of a portion D shown in FIG. [Figure 12] FIG. 12 is a cross-sectional photograph of a cross section along the width direction of the test member. [Figure 13]FIG. 13 is a cross-sectional view taken along the width direction of the inspection member. [Figure 14] FIG. 14 is a diagram for explaining the coloring state of the test member. [Figure 15] FIG. 15 is a schematic diagram showing a cross section along the width direction of a worn article having an absorbent article attached thereto. [Figure 16] FIG. 16 is a front view of the container according to the first embodiment. [Figure 17] FIG. 17 is a rear view of the container according to the first embodiment. [Figure 18] FIG. 18 is a diagram showing a container according to the second embodiment. [Figure 19] FIG. 19 is a diagram for explaining the artificial body fluid permeation test. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (1) Overview of the embodiment At least the following points will become apparent from the description of this specification and the accompanying drawings. The invention according to the first aspect is an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid-permeability adjusting section is provided on the non-skin side of the top sheet and on the skin side of the absorbent core, the liquid-permeability adjusting section having a low liquid permeability that allows a body fluid to migrate from the skin side to the non-skin side at a slower rate than the surroundings, or a liquid impermeability that does not allow body fluid to pass from the skin side to the non-skin side. The liquid-permeability adjusting section is disposed in a widthwise center region that is located in the center of the widthwise direction among the regions obtained by dividing the absorbent core into three equal parts in the width direction. The liquid-permeability adjusting section is less likely to allow body fluid to migrate than the surroundings. The liquid-permeability adjusting section is located on the skin side of the non-skin side of the absorbent core. The absorbent core located on the non-skin side of the liquid-permeability adjusting section is less likely to have body fluid guided therethrough, and absorbs less body fluid. Usually, the rigidity and thickness of an absorbent core change when it absorbs body fluid. The absorbent core after absorbing body fluids cannot maintain its rigidity or thickness compared to the absorbent core before absorption, and may not be able to maintain the desired state until after use. However, by providing a liquid permeability adjusting section, a portion that can suppress changes in the absorbent core before and after absorbing body fluids can be provided in the absorbent core. The central width region of the absorbent core is a region where body fluids are easily discharged, and changes due to absorption of body fluids are large. By providing a liquid permeability adjusting section in this central width region, it becomes easier to maintain the state before use even after use. In addition, the top sheet or the like arranged on the skin side of the liquid permeability adjusting section can ensure the ability to draw in body fluids, and liquid residue on the surface of the absorbent article can be suppressed. Therefore, skin troubles caused by body fluids remaining on the surface of the absorbent article can be suppressed.

[0012] The invention according to aspect 2 may have the following features in the invention according to aspect 1. In a plan view of the absorbent article, the rigidity of the absorbent article in the region where the liquid permeation control section is arranged is higher than the rigidity of the absorbent article in the region surrounding the liquid permeation control section. Since the rigidity of the absorbent article in the region where the liquid permeation control section is arranged is higher than the surrounding area, deformation due to pressure from the body when worn is reduced, and the absorbent article is more likely to maintain its pre-wear state.

[0013] The invention according to the third aspect is an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid-permeable regulator is provided on the non-skin side of the top sheet and on the skin side of the absorbent core, the liquid-permeable regulator having low liquid permeability that allows a body fluid to migrate from the skin side to the non-skin side at a slower rate than the surrounding area, or liquid impermeability that does not allow body fluid to pass from the skin side to the non-skin side. At least a part of the liquid-permeable regulator is provided on the absorbent core. The absorption amount per unit area of ​​the absorbent core provided with the liquid-permeable regulator is lower than the absorption amount per unit area of ​​the absorbent core around the liquid-permeable regulator. In a plan view of the absorbent article, the rigidity of the absorbent article in the region where the liquid-permeable regulator is disposed is higher than the rigidity of the absorbent article in the region around the liquid-permeable regulator. Since the absorption amount per unit area of ​​the absorbent core provided with the liquid-permeable regulator is low, the liquid-permeable regulator can be provided in the absorbent core to suppress changes in the absorbent core before and after absorbing body fluid. Furthermore, since the rigidity of the absorbent article in the area where the liquid permeation regulator is arranged is higher than the surrounding area, deformation due to pressure from the body when worn is reduced, making it easier to maintain the state before wearing.

[0014] According to a preferred embodiment, the invention according to embodiment 4 may have the following features in the invention according to any one of embodiments 1 to 3. At least a part of the liquid permeation adjusting section is composed of a liquid-impermeable sheet arranged on the skin side of the absorbent core. According to this embodiment, the liquid-impermeable sheet suppresses absorption of body fluids from the skin side, and the rigidity of the absorbent article in the region where the sheet is arranged can be ensured.

[0015] According to a preferred embodiment, the invention according to embodiment 5 may have the following features in the invention according to any one of embodiments 1 to 3. At least a part of the liquid permeation control part is composed of at least one of a hydrophobic coating agent applied to the absorbent core or a hydrophobic coating agent applied to a sheet disposed between the absorbent core and the top sheet. According to this embodiment, the hydrophobic coating agent suppresses absorption of body fluids from the skin side, and the rigidity of the absorbent article in the region where the coating agent is disposed can be ensured.

[0016] According to a preferred embodiment, the invention according to embodiment 6 may have the following features in the invention according to any one of embodiments 1 to 3. At least a part of the liquid permeability adjusting section is composed of a compressed section formed by compressing at least the absorbent core in the thickness direction. According to this embodiment, the liquid permeability adjusting section composed of the compressed section has high rigidity, and can ensure the rigidity of the absorbent core. In addition, the migration speed of bodily fluids from the skin side to the non-skin side can be reduced compared to an area where no compressed section is provided.

[0017] According to a preferred embodiment, the invention according to embodiment 7 may have the following features in the invention according to any one of embodiments 1 to 3. The liquid permeability adjusting section is provided between the top sheet and the absorbent core. According to this embodiment, it is possible to suppress the absorption of bodily fluids by the absorbent core at least in the region that overlaps with the liquid permeability adjusting section in the thickness direction, and since the liquid permeability adjusting section and the absorbent core are provided separately, it is easy to ensure the absorption performance of the absorbent core.

[0018] According to a preferred embodiment, the invention according to embodiment 8 may have the following features in the invention according to any one of embodiments 1 to 3. The liquid permeation control part is provided in the absorbent core. According to this embodiment, the presence of the liquid permeation control part makes it difficult for the absorbent core to absorb liquid, and the rigidity of the absorbent core can be maintained.

[0019] According to a preferred embodiment, the invention according to embodiment 9 may have the following features in the invention according to any one of embodiments 1 to 3. The invention has an auxiliary sheet disposed between the top sheet and the absorbent core. At least a part of the liquid permeation control part is provided between the top sheet and the auxiliary sheet. According to this embodiment, the liquid permeation control part can be provided at a position away from the absorbent core, which reduces the possibility of the absorbent core absorbing body fluids and further reduces the change in stiffness of the absorbent core before and after absorbing body fluids.

[0020] According to a preferred embodiment, the invention according to embodiment 10 may have the following features in the invention according to any one of embodiments 1 to 9. The liquid permeability adjusting portion straddles the widthwise center of the absorbent core. The widthwise center of the absorbent core is a portion where force is likely to concentrate, for example, when the absorbent core is pinched between both legs. In addition, the widthwise center of the absorbent core is an area where bodily fluids are likely to be discharged. By providing the liquid permeability adjusting portion across the widthwise center of the absorbent core, deformation due to force can be suppressed, and changes in stiffness, etc. due to absorption of bodily fluids can be suppressed.

[0021] According to a preferred embodiment, the invention according to embodiment 11 may have the following features in the invention according to any one of embodiments 1 to 10. The liquid permeability adjusting section extends in the front-to-rear direction. According to this embodiment, the liquid permeability adjusting section diffuses the body fluid in the front-to-rear direction, and the body fluid can be absorbed over a wide area in the front-to-rear direction. By widening the range over which the body fluid is absorbed, it is possible to prevent the formation of areas that locally retain a large amount of body fluid, and it is easy to maintain the rigidity of the absorbent core.

[0022] According to a preferred embodiment, the invention according to embodiment 12 may have the following features in the invention according to embodiment 11. A plurality of the liquid permeation adjusters are provided at intervals in the width direction. According to this embodiment, the liquid permeation adjusters are arranged at intervals in the width direction, and there are areas between the liquid permeation adjusters where no liquid permeation adjuster is arranged. Even if a liquid permeation adjuster located on the outer side in the width direction is deformed when a force toward the inside in the width direction is applied by a leg or the like, the liquid permeation adjuster located on the inner side in the width direction can exhibit its performance without being deformed, and the performance of the liquid permeation adjuster can be maintained by any one of the liquid permeation adjusters.

[0023] According to a preferred embodiment, the invention according to embodiment 13 may have the following features in the invention according to any one of embodiments 1 to 10. The liquid permeable regulators extend in the width direction and are arranged at intervals in the front-rear direction. According to this embodiment, the liquid permeable regulators are arranged at intervals in the front-rear direction, and there is an area where no liquid permeable regulator is arranged between the liquid permeable regulators. Even if the absorbent article is arranged along the curve of the body from the front to the rear of the body, the liquid permeable regulators can perform their functions without deformation, and the performance of the liquid permeable regulators can be maintained by any of the liquid permeable regulators. In addition, the liquid permeable regulators can absorb the body fluid in a wide area in the width direction while drawing the body fluid to the non-skin side in the area between the liquid permeable regulators. In addition, in a form in which the rigidity of the liquid permeable regulators is high, the liquid permeable regulators can resist the force from the legs, suppressing excessive deformation of the absorbent core.

[0024] According to a preferred embodiment, the invention according to embodiment 14 may have the following features in the invention according to any one of embodiments 1 to 13. The widthwise length of the liquid permeable adjusting portion is 50% or less of the widthwise length of the absorbent core. According to this embodiment, since the widthwise length of the liquid permeable adjusting portion is 50% or less of the entire widthwise area of ​​the absorbent core, the liquid permeable adjusting portion is unlikely to come into contact with the wearer's feet, etc., and is prevented from being subjected to direct force, so that the shape of the liquid permeable adjusting portion is more easily maintained. In addition, if the widthwise length of the liquid permeable adjusting portion is too long, the ratio of the liquid permeable adjusting portion increases, which reduces the ability to draw in bodily fluids into the absorbent core, and there is a risk of leakage, such as leakage through transmission. However, since the widthwise length of the liquid permeable adjusting portion is 50% or less of the entire widthwise area of ​​the absorbent core, the ability to draw in bodily fluids is ensured in other areas, and leakage can be suppressed.

[0025] According to a preferred embodiment, the invention according to embodiment 15 may have the following features in the invention according to any one of embodiments 1 to 14. The liquid permeability control part is provided in an excretion-opening-facing region that is disposed opposite the wearer's excretion opening. The excretion-opening-facing region is a part to which bodily fluids are most easily guided and which is most likely to absorb bodily fluids. By providing the liquid permeability control part in the excretion-opening-facing region, the rigidity of the part that is most likely to absorb bodily fluids and deform can be maintained close to that before use, and wrinkling during wear can be effectively suppressed.

[0026] According to a preferred embodiment, the invention according to embodiment 16 may have the following features in the invention according to any one of embodiments 1 to 14. The liquid permeability adjusting portion is provided so as not to straddle the front-to-rear center. Since the liquid permeability adjusting portion is provided so as not to straddle the front-to-rear center of the absorbent article, it can absorb bodily fluids at the front-to-rear center of the absorbent article where a relatively large amount of bodily fluids is discharged, and discomfort due to reduced liquid absorption can be suppressed. Furthermore, when the liquid permeability adjusting portion is located forward of the front-to-rear center of the absorbent core, the user can easily notice the presence of the liquid permeability adjusting portion when putting on or wearing the absorbent core.

[0027] According to a preferred embodiment, the invention according to embodiment 17 may have the following features in the invention according to any one of embodiments 1 to 16. A test member for testing the health condition of the wearer is arranged in a region that overlaps with the liquid permeability adjusting section in the thickness direction on the non-skin side of the liquid permeability adjusting section. According to this embodiment, the test member is arranged in the region that overlaps with the liquid permeability adjusting section in the thickness direction, thereby preventing the test member from coming into contact with excessive body fluids and suppressing false reactions. In addition, since the liquid permeability adjusting section is configured to be less likely to wrinkle, excessive pressure is prevented from being applied to the test member, and the test member is prevented from being wrinkled.

[0028] According to a preferred embodiment, the invention according to embodiment 18 may have the following features in the invention according to any one of embodiments 1 to 17. The liquid permeability adjusting portion is visible from the skin side of the absorbent article, and is not visible from the non-skin side of the absorbent article. According to this embodiment, since the liquid permeability adjusting portion is visible from the skin side of the absorbent article, the position of the liquid permeability adjusting portion can be grasped when wearing the absorbent article. Also, since the liquid permeability adjusting portion is not visible from the non-skin side of the absorbent article, the skin side and non-skin side of the absorbent article can be intuitively grasped depending on whether the liquid permeability adjusting portion is visible, and operability when wearing the absorbent article can be improved.

[0029] The invention according to the nineteenth aspect is an absorbent article. The absorbent article has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet. A liquid-permeable adjusting section that transfers bodily fluids from the skin side to the non-skin side at a slower rate than the surroundings, and a test member for testing the wearer's health, are provided on the non-skin side of the top sheet and the skin side of the absorbent core. The liquid-permeable adjusting section is composed of a liquid-impermeable sheet that is arranged to overlap the test member in the thickness direction. The liquid-permeable adjusting section transfers bodily fluids less easily than the surroundings. The liquid-permeable adjusting section is located on the skin side of the non-skin side of the absorbent core. Of the absorbent cores, the absorbent cores located on the non-skin side of the liquid-permeable adjusting section are less likely to have bodily fluids guided therethrough, and thus absorb less bodily fluid. By providing a liquid permeability adjusting section, a portion is provided that can suppress changes in the absorbent core before and after absorbing body fluids, and by arranging the liquid-impermeable sheet that constitutes the liquid permeability adjusting section so that it is overlapped in the thickness direction relative to the test member, it becomes difficult for body fluids from outside the test member in the thickness direction to directly reach the test member, thereby improving the test accuracy of the test member.

[0030] According to a preferred embodiment, the invention according to embodiment 20 may have the following features in the invention according to embodiment 19. The test member has an indicator that changes color based on excrement components, which are components contained in excrement. The liquid-impermeable sheet constituting the liquid permeability adjusting section has a skin-side sheet that covers the skin side of the indicator. According to this embodiment, by covering the skin side of the indicator with the skin-side sheet, it is possible to prevent excrement from reaching the indicator side directly from the skin side. Therefore, it is possible to prevent the visibility of the indicator from being reduced by excrement that reaches the indicator directly.

[0031] According to a preferred embodiment, the invention according to embodiment 21 may have the following features in the invention according to embodiment 20. The skin side sheet includes a first skin side sheet and a second skin side sheet disposed closer to the skin side than the first skin side sheet. The second skin side sheet covers the skin side of the first skin side sheet. In the width direction of the absorbent article, the outer edges of both sides of the second skin side sheet are located outside the outer edges of the first skin side sheet. The absorbent article is sandwiched between the legs and receives a force from the outside to the inside in the width direction W. At this time, the outer edges of the first non-skin side sheet and the outer edges of the second non-skin side sheet are shifted in the width direction, and multiple deformation base points are provided at intervals in the width direction W, gradually weakening the force received from the outside in the width direction W, allowing the shape of the test member to be maintained and the impact against the legs to be softened, thereby suppressing discomfort when worn. In addition, the second skin side cover sheet makes it easy to suppress the intrusion of excrement from the skin side of the test member and suppresses excrement from reaching the test member through an unintended route.

[0032] According to a preferred embodiment, the invention according to embodiment 22 may have the following features in the invention according to any one of embodiments 19 to 21. The test member has an indicator that changes color based on excrement components, which are components contained in excrement. The liquid impermeable sheet constituting the liquid permeability adjusting section has a non-skin side sheet that covers the non-skin side of the indicator. According to this embodiment, by covering the non-skin side of the indicator with the non-skin side sheet, it is possible to prevent excrement from reaching the indicator side directly from the non-skin side. Therefore, it is possible to prevent the visibility of the indicator from being reduced by excrement that reaches the indicator directly.

[0033] According to a preferred embodiment, the invention according to embodiment 23 may have the following features in the invention according to embodiment 22. The non-skin side sheet includes a first non-skin side sheet and a second non-skin side sheet arranged closer to the skin than the first non-skin side sheet. The second non-skin side sheet covers the non-skin side of the first non-skin side sheet. In the width direction of the absorbent article, the outer edges of both sides of the second non-skin side sheet are located outside the outer edges of the first non-skin side sheet. The absorbent article is sandwiched between the legs and receives a force from the outside toward the inside in the width direction W. At this time, the outer edges of the first non-skin side sheet and the outer edges of the second non-skin side sheet are offset in the width direction, and multiple deformation base points are provided at intervals in the width direction W, gradually weakening the force received from the outside in the width direction W, allowing the shape of the test member to be maintained, while also softening the impact on the legs and suppressing discomfort when worn. Furthermore, the second non-skin side cover sheet makes it easier to prevent excrement from entering the test member from the non-skin side, and can prevent excrement from reaching the test member through unintended routes.

[0034] (2) Absorbent article according to the first embodiment Hereinafter, an absorbent article 1X according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and that the ratios of the dimensions are different from the actual ones. Therefore, the specific dimensions should be determined with reference to the following description. In addition, the drawings may include parts having different dimensional relationships and ratios. The absorbent article 1X may be an absorbent article such as a sanitary napkin, a panty liner, an incontinence pad, a fecal pad, a disposable diaper, or a shorts-type napkin. The absorbent article 1X may be an article that is used by being attached to a worn article such as underwear, or may be an absorbent article that is used without being attached to a worn article. The absorbent article 1X of the embodiment is a panty liner. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and that the ratios of the dimensions are different from the actual ones. Therefore, specific dimensions should be determined with reference to the following explanation. In addition, the drawings may contain parts with different dimensional relationships and ratios. In addition, in the cross-sectional views, the components are shown separated for the sake of convenience, but in the actual product, the components are in contact with each other.

[0035] FIG. 1 is a plan view of the absorbent article 1X as viewed from the skin side T1. FIG. 2 is a plan view of the absorbent article 1X as viewed from the non-skin side T2. FIG. 3 is a cross-sectional view taken along the line PP shown in FIG. 1. FIG. 4 is a cross-sectional view taken along the line QQ shown in FIG. 1. Here, the "skin side" corresponds to the side that faces the wearer's skin during use. The "non-skin side" corresponds to the side that faces away from the wearer's skin during use. The absorbent article 1X has a front-rear direction L, a width direction W, and a thickness direction T that are perpendicular to each other. In the front-rear direction L of the absorbent article 1X, the side that contacts the user's lower abdomen is referred to as the "front side", and the side that contacts the user's buttocks is referred to as the "rear side".

[0036] The absorbent article 1X has a front region S1, a rear region S2, and a crotch region S3. The crotch region S3 includes an excretion-portion-facing region S5 that is disposed opposite the wearer's excretory port, such as the vaginal opening. The crotch region S3 is a region that is disposed under the crotch of the worn article and between the wearer's legs when the absorbent article 1X is worn on the worn article. The front region S1 is located forward of the crotch region S3. The front edge of the front region S1 defines the front edge of the absorbent article 1X. The rear region S2 is located rearward of the crotch region S3. The rear edge of the rear region S2 defines the rear edge of the absorbent article 1X. The crotch region S3 includes an excretion-portion-facing region S5 that abuts against the wearer's excretory port. The crotch region S3 may be the region where the wings are provided in an absorbent article having wings, or may be the region where the constricted portion is provided in an absorbent core having a constricted portion that is constricted inward in the width direction. Alternatively, the crotch region S3 may be the central region among the three equal regions obtained by dividing the absorbent article in the front-rear direction L. The excretion opening facing region S5 is a region facing the vaginal opening and urinary opening as excretion openings, and straddles the center of the width direction W of the absorbent core 31. The excretion opening facing region S5 does not have to be disposed opposite the excretion opening of the wearer who actually wears the garment, and may be a region that is disposed opposite the excretion opening of the wearer in terms of design.

[0037] In the present invention, the outer portion is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The outer edge of a component that occupies a certain range in the front-rear direction is an edge that connects points located on the outside in the width direction of the component throughout the entire component. The inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. The inner edge of a component that occupies a certain range in the front-rear direction is an edge that connects points located on the inside in the width direction of the component throughout the entire component. In addition, the front end and rear end in the present invention are portions that occupy a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and rear end edge are edges in the front-rear direction L. The outer end includes the front end and rear end, and the outer end edge includes the front end edge and rear end edge. In addition, the inner side is a side that includes the inner edge and extends along the front-rear direction L. The outer side is a side that includes the outer edge and extends along the front-to-rear direction L. In this specification, the term "along the front-to-rear direction L" means a direction having an angle of less than 45° with respect to the front-to-rear direction L, and the term "along the width direction W" means a direction having an angle of less than 45° with respect to the width direction W.

[0038] The absorbent article 1X has at least an absorbent core 31, a top sheet 11, and a back sheet 21. The absorbent article 1X has a vertically elongated shape. The top sheet 11 is a liquid-permeable sheet. The top sheet 11 may be configured to cover the entire skin surface of the absorbent article 1X with a single sheet as in this embodiment, or may have a center sheet covering the center of the absorbent core 31 in the width direction W, and side sheets disposed outside the center sheet in the width direction W. The top sheet 11 is made of any sheet-like material having a structure that allows liquid to pass through, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet.

[0039] The back sheet 21 is a liquid-impermeable sheet arranged on the non-skin side T2 of the absorbent core 31. The back sheet 21 is a liquid-impermeable sheet. The back sheet 21 can be a polyethylene sheet, a laminated nonwoven fabric mainly made of polypropylene or the like, a breathable resin film, or a sheet in which a breathable resin film is bonded to a nonwoven fabric such as spunbond or spunlace.

[0040] The absorbent core 31 constitutes the absorbent body. The absorbent core 31 may be made of an absorbent material that absorbs liquid. The absorbent material constituting the absorbent core 31 may be formed of, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The absorbent body may have a core wrap sheet that covers the absorbent core 31, or may not have a core wrap sheet as in this embodiment. The absorbent core 31 has regions obtained by dividing the absorbent core 31 into three equal parts in the width direction W. The three equal parts may have a width center region RC1 located in the center of the width direction W, and width side regions RS1 located outside the width center region RC1 in the width direction W.

[0041] As shown in FIG. 2 etc., the absorbent article 1X may have a fastening portion 25 for fastening the absorbent article 1X to a worn article such as underwear. The fastening portion 25 is provided on the non-skin side T2 of the back sheet 21, and is fastening means for fastening the absorbent article 1X to the worn article. Examples of the fastening means include a mechanical fastener and an adhesive (e.g., an HMA type adhesive). The fastening portion 25 may extend in the width direction W and a plurality of fastening portions may be provided at intervals in the front-rear direction L. In a modified example, the fastening portion 25 may extend in the front-rear direction L and a plurality of fastening portions may be provided at intervals in the width direction W.

[0042] The absorbent article 1X of this embodiment is configured to easily maintain the absorption performance of the absorbent core 31 while suppressing liquid residue on the top sheet 11. The configuration for easily maintaining the absorption performance of the absorbent core 31 while suppressing liquid residue on the top sheet 11 can be roughly classified into a first form and a second form. Both the absorbent articles 1X of the first form and the second form have a liquid permeation adjusting portion 300. The liquid permeation adjusting portion 300 is a portion configured to have a lower transfer rate of bodily fluids from the skin side T1 to the non-skin side T2 than the surrounding areas on the non-skin side T2 of the non-skin side T2 than the non-skin side of the top sheet 11 and on the skin side T1 of the absorbent core 31 than the non-skin side of the top sheet 11. The liquid permeation adjusting portion 300 is a portion in which the transfer rate of bodily fluids from the skin side T1 to the non-skin side T2 is lower than the surrounding areas (areas adjacent to the width direction W and areas adjacent to the front-rear direction L) in a plan view. The liquid permeability adjusting section 300 has low liquid permeability, which allows bodily fluids to move from the skin side to the non-skin side at a slower rate than the surrounding area, or liquid impermeability, which does not allow bodily fluids to pass from the skin side to the non-skin side. That is, the liquid permeability adjusting section 300 may allow bodily fluids to pass through with lower permeability than the surrounding area, or may not allow bodily fluids to pass through to the non-skin side. An example of a liquid impermeable sheet is a liquid impermeable resin film, but it may also be a liquid impermeable and breathable sheet. An example of a liquid impermeable and breathable sheet is a sheet that has fine communicating holes formed on the surface, allows water vapor and air to pass through, and blocks water.

[0043] Here, the liquid permeable regulator 300 can be broadly divided into a configuration in which the absorption rate of bodily fluid is reduced by having a low ability to draw in bodily fluid, and a configuration in which the absorption rate of bodily fluid is reduced by making it difficult for the drawn-in bodily fluid to move to the non-skin side T2. Therefore, the liquid permeable regulator 300 can be specified, for example, by the following first and second specifying methods. The first specifying method is a method for specifying a liquid permeable regulator 300 with a low ability to draw in bodily fluid. The liquid permeable regulator 300 is provided between the non-skin side of the top sheet 11 and the non-skin side of the absorbent core 31. Therefore, when specifying the liquid permeable regulator 300, first, the top sheet 11 is removed from the absorbent article 1X, and a member (in this embodiment, the back sheet 21) on the non-skin side T2 is removed from the non-skin side of the absorbent core 31. The member (hereinafter referred to as the target member) between the non-skin side of the top sheet 11 and the non-skin side of the absorbent core 31 is taken out, and the target member is decomposed into each material as much as possible. For example, the materials include the absorbent core 31, the core wrap sheet, the auxiliary sheet, other sheets (e.g., resin film), adhesive, and water repellent. When the materials are bonded together, they are disassembled by cooling or heating to release the bonded state of the adhesive, etc., by cooling or heating. In addition, materials coated with adhesive, water repellent, etc. cannot be taken out separately, so they are in one of the materials. Each material taken out from the target member is placed on a flat surface, and one drop of simulated body fluid is dropped on the skin side T1 surface of each material. If the simulated body fluid remains on the material in a bead shape for 60 seconds or more, the material is judged to be the liquid permeability adjustment section 300 because the material does not easily absorb body fluid. On the other hand, if the simulated body fluid is absorbed into the material in less than 60 seconds, or if the simulated body fluid remains on the material for 60 seconds or more but the bead shape collapses in less than 60 seconds, the material is judged not to be the liquid permeability adjustment section 300.

[0044] The second identification method identifies a liquid permeability adjustment part 300 that does not easily transfer the drawn body fluid to the non-skin side T2. First, the target member is taken out in the same manner as the first identification method. Unlike the first identification method, the second identification method identifies the target member in its state without breaking it down into each material. Whether or not it is difficult to transfer to the non-skin side T2 depends on whether or not it has a slower speed than the surroundings, or whether or not it does not allow body fluid to pass through. The target member is divided into areas. Lines are drawn on the non-skin side of the target member using ink that does not bleed with body fluids (e.g., oil-based ink), and the target member is divided into areas of 50 mm x 50 mm. Next, the target member is placed in a floating state so that the non-skin side of the target member can be visually confirmed. Specifically, multiple string-like members (e.g., multiple resin threads) that do not draw in body fluids are hung at intervals, and the target member is placed on the string-like members. With the target member placed on the string-like member, 5 ml of simulated body fluid is dropped onto the skin side T1 of the material. The target member is observed from the non-skin side T2. If the arrival time of the body fluid in an arbitrary section is slower than that of the surrounding sections, it is determined that the arbitrary section is provided with a low-permeable liquid permeation adjusting section 300 because the arrival speed is slower than that of the surrounding sections. Alternatively, if the body fluid does not reach the non-skin side surface in an arbitrary section, it is determined that the arbitrary section is provided with a liquid-impermeable liquid permeation adjusting section 300. If there is a difference in arrival time between the sections, it may be determined that the section with the longer time is provided with a low-liquid permeable liquid permeation adjusting section 300, but preferably, when the arrival time of the first section is compared with the arrival time of the second section, if the difference in time with respect to the shorter time is 1.2 times or more, it may be determined that the section with the longer time is provided with a low-liquid permeable liquid permeation adjusting section 300, or when the arrival time of the first section is compared with the arrival time of the second section, if the difference in time with respect to the shorter time is 5 seconds or more, it may be determined that the section with the longer time is provided with a liquid permeation adjusting section 300. If it is difficult to confirm whether the simulated body fluid has reached the non-skin side T2 with 5 ml of simulated body fluid, an additional 5 ml of simulated body fluid is dropped 60 seconds after dropping. If it is difficult to visually confirm the state of body fluid permeation in the state of the subject material, the back sheet may be removed for observation.

[0045] Here, the simulated body fluid may be artificial menstrual blood. The artificial menstrual blood may be a mixture of appropriate amounts of ionized water, glycerin, sodium carbomethylcellulose, sodium chloride, sodium bicarbonate, Pigment Red No. 102, Pigment Red No. 2, and Pigment Yellow No. 5 (each pigment is manufactured by Marubeni Corporation). The viscosity of the simulated body fluid may be about 22 to 26 mPa·s. The viscosity may be measured using a viscometer (Shibaura Systems Co., Ltd., Vismetron Model VGA-4).

[0046] As shown in Fig. 3 and Fig. 4, the absorbent article 1X of this embodiment is arranged from the skin side T1 toward the non-skin side T2, with the top sheet 11, the HMA (hot melt) adhesive 56, the resin film 50, the HMA adhesive 56, the absorbent core 31, the HMA adhesive 56, the back sheet 21, and the fastening part 25. Thus, the target member has at least the resin film 50, the HMA adhesive 56, and the absorbent core 31, depending on the arrangement state of the HMA adhesive that contacts the top sheet 11 and the back sheet 21 at the time of disassembly. By carrying out the second specification method in the state of the target member, it can be determined that the arrival speed of the section where the resin film 50 is arranged is slow, and that the liquid permeation adjustment part 300 is provided in the region where the resin film 50 is arranged. Alternatively, by carrying out the first specification method, it can be determined that the resin film 50 has low ability to draw in bodily fluids, and that the resin film 50 constitutes the liquid permeation adjustment part 300.

[0047] The first embodiment is characterized in that the liquid permeable regulator 300 is disposed in the widthwise center region RC1. The liquid permeable regulator 300 has a lower migration rate of bodily fluids to the non-skin side T2 than the surroundings, and is less likely to migrate bodily fluids than the surroundings. The liquid permeable regulator 300 is located closer to the skin side T1 than the non-skin side of the absorbent core 31. Of the absorbent cores 31, the absorbent cores 31 located on the non-skin side T2 than the liquid permeable regulator 300 are less likely to have bodily fluids guided thereto, and absorb less bodily fluids. In addition, when the liquid permeable regulator 300 is provided on the non-skin side of the absorbent core, absorption of bodily fluids can be suppressed in a certain range from the non-skin side of the absorbent core 31 toward the skin side T1. Usually, the rigidity and thickness of the absorbent core 31 change as it absorbs bodily fluids. The absorbent core 31 after absorbing bodily fluids cannot maintain its rigidity and thickness compared to the absorbent core 31 before absorption, and may not be able to maintain the desired state until after use. However, by providing the liquid permeation adjusting section 300, a portion that can suppress the change in the absorbent core 31 before and after absorbing body fluids can be provided in the absorbent core 31. The widthwise center region RC1 of the absorbent core 31 is more likely to discharge body fluids than the widthwise side regions RS1, and changes due to the absorption of body fluids are greater. By providing the liquid permeation adjusting section 300 in the widthwise center region RC1, the state before use can be easily maintained even after use. In addition, the top sheet 11 and the like arranged on the skin side T1 of the liquid permeation adjusting section 300 can ensure the ability to draw in body fluids, and the liquid remaining on the surface of the absorbent article 1X can be suppressed. Therefore, skin troubles due to the body fluid remaining on the surface of the absorbent article 1X can be suppressed. The absorbent article 1X of this embodiment has the configuration of the first embodiment, and the resin film 50 constituting the liquid permeation adjusting section 300 is provided in the widthwise center region RC1. In the first embodiment, the liquid permeation adjusting section 300 may be provided in at least a part of the widthwise central region RC1, and may be provided in a part of the widthwise central region RC1 in the width direction W, or may be provided in the entire widthwise central region RC1 in the width direction W. The liquid permeation adjusting section 300 may be provided in both the widthwise central region RC1 and the widthwise side regions RS1.

[0048] The second embodiment is characterized in that at least a part of the liquid permeation adjusting section 300 is provided in the absorbent core 31, the absorption amount per unit area of ​​the absorbent core in the region constituting the liquid permeation adjusting section 300 is lower than the absorption amount per unit area of ​​the absorbent core in the region constituting the liquid permeation adjusting section 300, and the rigidity of the absorbent article in the region where the liquid permeation adjusting section 300 is arranged in a plan view of the absorbent article is higher than the rigidity of the absorbent article in the region surrounding the liquid permeation adjusting section 300. Since the absorption amount per unit area of ​​the absorbent core in the region constituting the liquid permeation adjusting section 300 is low, the liquid permeation adjusting section 300 can be provided in the absorbent core 31 to provide a portion that can suppress changes in the absorbent core 31 before and after absorbing bodily fluids. In addition, since the rigidity of the absorbent article in the region where the liquid permeation adjusting section 300 is arranged is higher than the surrounding area, the region where the liquid permeation adjusting section 300 is arranged is less likely to deform due to pressure from the body when worn, and the state before wearing is more easily maintained. Furthermore, the liquid permeability adjusting portion 300 is located closer to the non-skin side T2 than the top sheet 11, and is less likely to come into direct contact with the wearer's skin. When the rigidity of the top sheet 11 is lower than the rigidity of the liquid permeability adjusting portion 300 itself (for example, compressed portions), even if the rigidity of the liquid permeability adjusting portion 300 itself is high, the softness of the top sheet 11 makes it difficult for the wearer to feel the increased rigidity, thereby suppressing discomfort and skin troubles while wearing the garment.

[0049] Here, the absorption amount per unit area can be measured by the following method. First, the absorbent core 31 is taken out, divided into areas of 10 mm x 10 mm, and each section is cut to prepare a test piece. The weight and planar dimensions of each test piece are measured. Each test piece is entirely immersed in a simulated body fluid. The simulated body fluid may be the same as that described above. After 60 seconds, each test piece is taken out and left to stand on a wire mesh or the like for 1 minute. The weight of each test piece is then measured. The absorption amount per unit area is determined by this method. If the basis weight of the absorbent fiber of the test piece is not uniform, the absorption ratio, which can be calculated by (weight after absorption - weight before absorption) / (weight before absorption), may be used as the absorption amount for comparison.

[0050] The stiffness may be Gurley stiffness. The stiffness of the absorbent article in the region where the liquid permeation adjusting section 300 is arranged in plan view is higher than the stiffness of the absorbent article in the region around the liquid permeation adjusting section 300, as long as the stiffness relationship is satisfied in a state where the absorbent core does not absorb bodily fluids. The stiffness can be measured, for example, by the following method. The equipment used is Gurley's Stiffness Tester manufactured by Yasuda Seiki Ltd. The procedure is as follows: the measurement object is cut to 25 mm x 38 mm, and N = 5 samples are taken. More specifically, when measuring the stiffness of the absorbent article in the region where the liquid permeation adjusting section is arranged in plan view, the entire absorbent article in the thickness direction is cut out so as to include the region where the liquid permeation adjusting section is arranged in plan view. If the region where the liquid permeation adjusting section is arranged in plan view does not meet the 25 mm x 38 mm, the maximum region where the liquid permeation adjusting section is arranged is cut out. When measuring the rigidity of the absorbent article in the area around the liquid permeation control unit, cut it out to the same dimensions as the area where the liquid permeation control unit is arranged. The sample is cut with scissors using a wrinkle-free part. The sample is in a state where no bodily fluids have been absorbed. Next, set the sample in the instrument so that the upper end of the sample is located at the upper end of the zipper. In this case, the pendulum is placed on the lower end of the sample. Attach an auxiliary weight so that the scale is between 3 and 6. Press the switch and read the scale at the moment when the rotating rod of the pendulum separates from the sample. Measure the LEFT and RIGHT of the device. Measure three samples. The calculation method is to take the average value of LEFT and RIGHT for each of the vertical and horizontal directions. In this embodiment, the calculation is performed using the following formula. Note. The positions of the places where the weight is placed are i at the 1st inch, ii at the 2nd inch, and iii at the 4th inch.

number

[0051] A specific configuration of the second embodiment is, for example, a configuration in which a low basis weight portion (including slits) is formed in the absorbent core 31, and a high stiffness portion is arranged in an area overlapping the low basis weight portion in the thickness direction. The high stiffness portion may be formed of a material (resin film) other than the absorbent core, or may be formed of the absorbent core (an absorbent core other than the absorbent core having the low basis weight portion, or a portion located on the skin side or non-skin side of the absorbent core in which the low basis weight portion is formed). The high stiffness portion only needs to be configured to have a stiffness higher than the surrounding area in a plan view. The low basis weight portion and the high stiffness portion form the liquid permeation adjustment portion 300. Therefore, the liquid permeation adjustment portion 300 of the absorbent article of the second embodiment only needs to be at least partially provided in the absorbent core 31, and may have a portion not provided in the absorbent core 31. Another specific configuration of the second embodiment is a configuration in which a part of the absorbent core 31 is impregnated with a water repellent (for example, silicon). The absorption amount per unit area of ​​the absorbent core in the region containing the water repellent is lower than the absorption amount per unit area of ​​the absorbent core surrounding the region containing the water repellent, and in a plan view of the absorbent article, the rigidity of the absorbent article in the region containing the water repellent is higher than the rigidity of the region of the absorbent article surrounding the region containing the water repellent. The region containing the water repellent constitutes a liquid permeation control section. Thus, this configuration also makes it possible to increase the rigidity of the impregnated region and reduce the water absorption amount.

[0052] The liquid permeation adjusting portion may be visible from the skin side of the absorbent article, but not from the non-skin side of the absorbent article. The liquid permeation adjusting portion may be visible from the skin side of the absorbent article before the absorbent article is used. According to this aspect, since the liquid permeation adjusting portion is visible from the skin side of the absorbent article, the position of the liquid permeation adjusting portion can be grasped when wearing the absorbent article. Furthermore, since the liquid permeation adjusting portion is not visible from the non-skin side of the absorbent article, the skin side and non-skin side of the absorbent article can be intuitively grasped depending on whether the liquid permeation adjusting portion is visible, and operability when wearing the absorbent article can be improved.

[0053] Next, a configuration that can be preferably adopted in the first and second embodiments will be described. Note that, unless otherwise specified, the configuration described below is also applicable to the first and second embodiments. In addition, the configuration and position of the liquid permeation adjusting section 300 can be appropriately changed, and FIG. 5 shows an absorbent article according to a modified example. Note that the absorbent article according to the modified example may be a modified example that can be applied to both the first and second embodiments.

[0054] In the absorbent article of the first embodiment, the rigidity of the region where the liquid permeation adjusting portion 300 is arranged may be higher than the rigidity of the region around the liquid permeation adjusting portion 300, as in the absorbent article of the second embodiment. According to this embodiment, deformation due to pressure from the body during wearing is reduced, and the state before wearing is more easily maintained. In addition, the softness of the top sheet 11 makes it difficult for the wearer to feel the increased rigidity, and discomfort during wearing can be suppressed. In the absorbent article of the second embodiment, the liquid permeation adjusting portion 300 may be arranged in the width center region RC1, as in the absorbent article of the first embodiment. By providing the liquid permeation adjusting portion 300 in the width center region RC1, the state before use is more easily maintained even after use.

[0055] As shown in FIG. 1, the liquid permeable adjusting portion 300 may straddle the center 1CW in the width direction W of the absorbent core 31. The center in the width direction W of the absorbent core 31 is a portion where force is likely to concentrate when the absorbent core 31 is pinched between both legs. In addition, the center in the width direction W of the absorbent core 31 is an area where bodily fluids are likely to be discharged. By providing the liquid permeable adjusting portion 300 straddling the center in the width direction W of the absorbent core 31, deformation due to force can be suppressed, and changes in stiffness, etc. due to absorption of bodily fluids can be suppressed. In a form in which a plurality of liquid permeable adjusting portions 300 are provided, it is sufficient that one of the liquid permeable adjusting portions 300 straddles the center 1CW in the width direction W of the absorbent core 31. In addition, as shown in FIG. 5(A), in a modified example, the liquid permeable adjusting portion 300 may be provided without straddling the center 1CW in the width direction W of the absorbent core 31. The liquid permeable adjusting portion 300 can absorb bodily fluids at the center in the width direction W of the absorbent article 1X where a relatively large amount of bodily fluids are discharged, and discomfort caused by a decrease in the ability to draw in liquids can be suppressed.

[0056] As shown in FIG. 1, the liquid permeable regulator 300 may extend in the front-rear direction L. That is, the liquid permeable regulator 300 may be vertically long. The liquid permeable regulator 300 diffuses bodily fluid in the front-rear direction L, and absorbs the bodily fluid in a wide area in the front-rear direction L. By widening the absorption range of bodily fluid, it is possible to suppress the formation of an area that locally holds a large amount of bodily fluid, and it becomes easier to maintain the rigidity of the absorbent core 31 even after absorbing the bodily fluid. Also, as shown in FIG. 5(A), the liquid permeable regulator 300 of the absorbent article 1A may extend in the front-rear direction L and be provided in a plurality of units spaced apart in the width direction W. According to this configuration, the liquid permeable regulators 300 are arranged at intervals in the width direction W, and there are areas between the liquid permeable regulators 300 where the liquid permeable regulators 300 are not arranged. Even if the liquid permeable regulator 300 located on the outer side in the width direction W is deformed when a force toward the inside in the width direction W is applied by the legs or the like, the liquid permeable regulator 300 located on the inner side in the width direction W can exhibit its performance without being deformed, and the performance of the liquid permeable regulator 300 can be maintained by any one of the liquid permeable regulators 300. In addition, the liquid permeable regulator 300 can absorb the body fluid in a wide area in the front-rear direction L by diffusing the body fluid in the front-rear direction L while drawing the body fluid to the non-skin side T2 in the area between the liquid permeable regulators 300. As shown in FIG. 5(B), the liquid permeable regulator 300 of the absorbent article 1B may be provided continuously over the entire area in the front-rear direction L of the absorbent core 31. According to this configuration, the area in which the state of the absorbent core 31 before use can be maintained can be provided continuously over the entire area in the front-rear direction L of the absorbent core 31.

[0057] The liquid permeable regulator 300 of this embodiment is not provided over the entire area of ​​the absorbent core 31, but is provided within a certain range from the center 1CL in the front-rear direction L of the absorbent article. As shown in FIG. 4, the front edge 300F of the liquid permeable regulator 300 is located behind the front edge 31F of the absorbent core 31, and the rear edge 300R of the liquid permeable regulator 300 is located ahead of the rear edge 31R of the absorbent core 31. This configuration allows the liquid permeable regulator 300 to draw in and absorb body fluids in an area outside the front-rear direction L of the liquid permeable regulator 300. In addition, by providing the liquid permeable regulator 300 in an area where a relatively large amount of body fluid is discharged and not providing the liquid permeable regulator 300 outside the area in the front-rear direction L, the liquid permeable regulator 300 diffuses the body fluid outside the front-rear direction L, and the body fluid can be retained over a wide area of ​​the absorbent core 31. Therefore, the absorbent core 31 does not absorb body fluids locally, but can absorb body fluids throughout the entire absorbent core 31, and deformation and wrinkling of the absorbent core 31 after absorbing body fluids can be suppressed throughout the entire absorbent core 31. The liquid permeability adjusting portion 300 may be disposed across a plurality of fastening portions 25. That is, there may be provided a region where the liquid permeability adjusting portion 300 and the fastening portion 25 overlap in the thickness direction T, a region where the fastening portion 25 is not disposed and the liquid permeability adjusting portion 300 is disposed, and a region where the fastening portion 25 is disposed and the liquid permeability adjusting portion 300 is not disposed.

[0058] Preferably, the fastening part 25 may be disposed across the outer edge of the liquid permeable adjusting part 300. In a configuration in which the liquid permeable adjusting part 300 has high rigidity, the outer edge (boundary) of the liquid permeable adjusting part 300 may come into contact with the skin, causing discomfort. However, by disposing the fastening part across the outer edge (boundary) of the liquid permeable adjusting part 300, the outer edge of the liquid permeable adjusting part 300 is fastened to the wearing article by the fastening part, and the wearing article comes into close contact with the outer edge of the liquid permeable adjusting part 300, thereby suppressing discomfort on the skin. More preferably, the fastening part 25 may be disposed across the outer edge of the liquid permeable adjusting part 300 in the width direction, or across the outer end edge of the liquid permeable adjusting part 300 in the front-rear direction. The discomfort of the entire outer edge of the liquid permeable adjusting part 300 can be suppressed. Note that the configuration that straddles the outer edge of the liquid permeable adjusting part 300 does not have to straddle the entire outer edge, but may be disposed across at least a part of it.

[0059] As shown in FIG. 5(C), in a modified example, the liquid permeable adjusting portion 300 of the absorbent article 1C may extend along the width direction W. That is, the liquid permeable adjusting portion 300 may be horizontally long. According to this configuration, the liquid permeable adjusting portion 300 diffuses the body fluid in the width direction W, and the body fluid can be absorbed in a wide area in the width direction W. By widening the absorption range of the body fluid, it is possible to suppress the formation of an area that locally holds a large amount of body fluid, and it is easy to maintain the rigidity, etc. of the absorbent core 31 after absorbing the body fluid. As shown in FIG. 5(C), in a modified example, the liquid permeable adjusting portion 300 of the absorbent article 1C may extend in the width direction W and be provided continuously over the entire area of ​​the width direction W of the absorbent core 31. According to this configuration, the area that can maintain the state of the absorbent core 31 before use can be provided continuously over the entire area of ​​the width direction W of the absorbent core 31. 5(D), in a modified example, the liquid permeability adjusting portion 300 of the absorbent article 1D may extend in the width direction W and be disposed in a partial region in the width direction W of the absorbent core 31. By providing the liquid permeability adjusting portion 300 in a region where a relatively large amount of body fluid is discharged and not providing the liquid permeability adjusting portion 300 on the outside in the width direction W, the body fluid can be diffused to the outside in the width direction W via the liquid permeability adjusting portion 300 and the body fluid can be retained over a wide range of the absorbent core 31.

[0060] As shown in FIG. 5(D), the liquid permeable regulator 300 of the absorbent article 1D may extend in the width direction W and be provided at intervals in the front-rear direction L. According to this configuration, the liquid permeable regulators 300 are arranged at intervals in the front-rear direction L, and there are regions between the liquid permeable regulators 300 where no liquid permeable regulators 300 are arranged. When the absorbent article 1D is arranged along the curve of the body from the front to the rear of the body, the liquid permeable regulators 300 can exert their performance without deformation, and the performance of the liquid permeable regulators 300 can be maintained by any one of the liquid permeable regulators 300. In addition, the body fluid is drawn to the non-skin side T2 in the regions between the liquid permeable regulators 300, while the liquid permeable regulators 300 diffuse the body fluid in the width direction W, and the body fluid can be absorbed in a wide region in the width direction W. Furthermore, when the liquid permeable adjusting portion 300 has a high rigidity, it is possible to suppress deformation of the liquid permeable adjusting portion 300 when it is pinched between the legs, and the shape of the absorbent core 31 can be maintained in the state before use. The pitch in the front-rear direction L of the liquid permeable adjusting portion 300 may be different from the pitch in the front-rear direction L of the fastening portion 25. That is, there may be provided an area where the liquid permeable adjusting portion 300 and the fastening portion 25 overlap in the thickness direction T, an area where the fastening portion 25 is not arranged but the liquid permeable adjusting portion 300 is arranged, and an area where the fastening portion 25 is arranged but the liquid permeable adjusting portion 300 is not arranged.

[0061] 5(E), in a modified example, the liquid permeable regulator 300 of the absorbent article 1E may be arranged in a lattice pattern. With this configuration, the area where the liquid permeable regulator 300 is provided and the area where the liquid permeable regulator 300 is not provided extend in the front-rear direction L and the width direction W, respectively, so that the body fluid can be diffused over a wide range in the front-rear direction L and the width direction W, and the ability to draw in the body fluid can be ensured in the area where the liquid permeable regulator 300 is not provided.

[0062] The liquid permeable regulator 300 may be provided in the excretion-port facing region S5 that is disposed facing the excretion port of the wearer. In the present embodiment, when the absorbent article is symmetrical with respect to a line that passes through the center in the front-rear direction L and extends in the width direction W, the excretion-port facing region S5 of the absorbent article 1 is disposed at the center in the front-rear direction L. That is, the liquid permeable regulator 300 may straddle the center 1CL in the front-rear direction L of the absorbent article 1. The excretion-port facing region S5 is a portion where bodily fluids are most easily guided and absorbed. By providing the liquid permeable regulator 300 in the excretion-port facing region S5, the rigidity of the portion that is most likely to absorb bodily fluids and deform can be maintained close to that before use, and wrinkling during wearing can be effectively suppressed.

[0063] As shown in Fig. 5(F), in a modified example, the liquid permeability adjusting section 300 of the absorbent article 1F may be arranged so as not to straddle the center in the front-rear direction L. With this configuration, bodily fluids can be absorbed at the center 1CL in the front-rear direction L of the absorbent article 1 where a relatively large amount of bodily fluids are discharged, and discomfort due to reduced liquid absorption can be suppressed. In addition, as shown in Fig. 5(F), in a configuration in which the liquid permeability adjusting section 300 of the absorbent article 1F is located forward of the center in the front-rear direction of the absorbent core 31, the user can easily notice the presence of the liquid permeability adjusting section 300 when putting on or wearing the product.

[0064] The length of the liquid permeable regulator 300 in the front-rear direction L may be 50% or less of the length of the absorbent article 1 in the front-rear direction L. The liquid permeable regulator 300 is 50% or less of the length of the absorbent article 1 in the front-rear direction L, and occupies a small proportion of the entire length of the absorbent core 31 in the front-rear direction. When worn, the cross-sectional shape of the absorbent article 1 in the front-rear direction L is curved to fit the shape of the body. By making the length of the liquid permeable regulator 300 in the front-rear direction L relatively short, it is easy to make the entire absorbent core 31 fit the curve of the body while suppressing deformation of the liquid permeable regulator 300. In addition, the length of the liquid permeable regulator 300 in the front-rear direction L may be preferably 40% or less of the length of the absorbent article 1 in the front-rear direction L, and more preferably 30% or less.

[0065] The length in the front-rear direction L of the liquid permeable adjusting part 300 may be 90 mm or less, preferably 80 mm or less, so that it can be easily arranged along the curves of the body. In addition, in order to suppress front and rear leakage of bodily fluids, the distance between the outer edge of the liquid permeable adjusting part 300 and the outer edge of the absorbent core 31 may be 20 mm or more, preferably 30 mm or more, and more preferably 40 mm or more. In order to ensure the performance of the liquid permeable adjusting part 300 in maintaining the shape of the absorbent core 31, the length in the front-rear direction L of the liquid permeable adjusting part 300 may be 30 mm or more, preferably 40 mm or more, and more preferably 50 mm or more.

[0066] The length of the liquid permeable adjusting portion 300 in the width direction W may be 50% or less of the length of the absorbent core 31 in the width direction W. Since the length of the liquid permeable adjusting portion 300 in the width direction W is 50% or less of the entire area of ​​the absorbent core 31 in the width direction W, the liquid permeable adjusting portion 300 is unlikely to come into contact with the wearer's feet, etc., and is prevented from being subjected to direct force, so that the liquid permeable adjusting portion 300 can be maintained and twisting of the absorbent core 31 can be reduced. In addition, if the length of the liquid permeable adjusting portion 300 in the width direction W is too long, the ratio of the liquid permeable adjusting portion 300 increases, which reduces the ability to draw in bodily fluids into the absorbent core 31, and there is a risk of leakage, such as leakage through transmission. However, since the length of the liquid permeable adjusting portion 300 in the width direction W is 50% or less of the entire area of ​​the absorbent core 31 in the width direction W, the ability to draw in bodily fluids can be ensured in other areas, and leakage can be suppressed. Furthermore, preferably, the length in the width direction W of the liquid permeability adjustment section 300 may be 40% or less of the length in the width direction W of the absorbent core 31, and more preferably, it may be 30% or less of the length in the width direction W of the absorbent core 31.

[0067] The length in the width direction W of the liquid permeable adjusting portion 300 may be 40 mm or less, preferably 30 mm or less, more preferably 20 mm or less, in order to suppress discomfort at the excretory portion. The length in the width direction W of the liquid permeable adjusting portion 300 may be 60 mm or less, preferably 40 mm or less, more preferably 30 mm or less, in order to suppress discomfort at the legs. Furthermore, in order to suppress discomfort at the legs, the distance between the outer edge of the liquid permeable adjusting portion 300 and the outer edge of the absorbent article may be 20 mm or more, preferably 30 mm or more, more preferably 40 mm or more. In addition, in order to suppress lateral leakage of bodily fluids, the distance between the outer edge of the liquid permeable adjusting portion 300 and the outer edge of the absorbent core 31 may be 20 mm or more, preferably 30 mm or more, more preferably 40 mm or more. In addition, in order to ensure the ability of the liquid permeability adjusting section 300 to maintain the shape of the absorbent core 31, the length in the width direction W of the liquid permeability adjusting section 300 may be 5 mm or more, preferably 10 mm or more, and more preferably 15 mm or more.

[0068] The liquid permeation adjusting portion 300 may be composed of at least one of the materials arranged on the target member. The liquid permeation adjusting portion 300 may be provided on one material, or on multiple materials. The liquid permeation adjusting portion 300 only needs to be provided between the non-skin surface of the top sheet 11 and the non-skin surface of the absorbent core 31, and the position in the thickness direction T within that range is not limited. The liquid permeation adjusting portion 300 may be provided continuously in the thickness direction T between the non-skin surface of the top sheet 11 and the non-skin surface of the absorbent core 31, or may be provided in a part of the thickness direction T.

[0069] As shown in Fig. 3 and Fig. 4, the liquid permeation adjusting section 300 may be provided between the top sheet 11 and the absorbent core 31. According to this configuration, the absorption of bodily fluids by the absorbent core 31 in at least the region overlapping with the liquid permeation adjusting section 300 in the thickness direction can be suppressed, and since the liquid permeation adjusting section 300 and the absorbent core 31 are provided separately, it is easy to ensure the absorption performance of the absorbent core 31. Specific examples of the liquid permeation adjusting section 300 provided between the top sheet 11 and the absorbent core 31 include an auxiliary sheet, a core wrap sheet, the resin film of this embodiment, an adhesive, and a water repellent. In addition, a nonwoven fabric having hydrophilic fibers coated with a water repellent, and a nonwoven fabric having hydrophilic fibers partially formed into a film by welding or the like may be used as the liquid permeation adjusting section 300.

[0070] In a modified example, as shown in Fig. 5(G), the liquid permeability adjusting section 300 of the absorbent article 1G may be provided in the absorbent core 31. According to this embodiment, when a part of the absorbent core 31 is the liquid permeability adjusting section 300, the absorbent core 31 is less likely to absorb body fluids, and the rigidity of the absorbent core 31 can be maintained. In addition, the top sheet 11 and the like arranged on the skin side T1 of the liquid permeability adjusting section 300 ensures the ability to draw in body fluids, and liquid residue on the surface of the absorbent article 1 can be suppressed. Therefore, skin troubles caused by body fluids remaining on the surface of the absorbent article 1 can be suppressed.

[0071] 5(H), the absorbent article 1H may have an auxiliary sheet 15 disposed between the top sheet 11 and the absorbent core 31, and the liquid permeation adjusting section 300 may be provided between the top sheet 11 and the auxiliary sheet 15. According to this embodiment, the liquid permeation adjusting section 300 can be provided at a position away from the absorbent core 31, which reduces the possibility of the absorbent core 31 absorbing body fluids and further reduces the change in stiffness of the absorbent core 31 before and after absorption of body fluids.

[0072] The liquid permeation adjusting section 300 may be composed of a liquid-impermeable sheet arranged on the skin side T1 of the absorbent core 31 as in this embodiment. The liquid-impermeable sheet is a sheet that has liquid impermeability that does not allow liquid to pass through. An example of the liquid-impermeable sheet is the resin film 50 of this embodiment, and another example is cellophane. With this configuration, the liquid-impermeable sheet suppresses absorption of body fluids from the skin side, and the rigidity of the absorbent core 31 in the area that overlaps with the sheet in the thickness direction can be ensured.

[0073] The liquid permeation adjusting section 300 may be formed by at least one of a hydrophobic water repellent applied to the absorbent core 31 and a hydrophobic coating agent applied to a sheet disposed between the absorbent core 31 and the top sheet 11. According to this configuration, the hydrophobic coating agent suppresses the absorption of body fluids from the skin side, and the rigidity of the absorbent core 31 in the region overlapping with the adhesive in the thickness direction can be ensured. Examples of the hydrophobic coating agent include an adhesive (HMA type adhesive) and a water repellent (silicone). Examples of the form in which the liquid permeation adjusting section 300 is formed by the coating agent include a configuration in which the coating agent is thicker than the surrounding area (impregnated to the inside of the material), a configuration in which the area ratio of the coating agent per unit area is higher than the surrounding area (the surrounding area is intermittently coated with a spiral or the like, and the area corresponding to the liquid permeation adjusting section 300 is non-intermittently coated), and a configuration in which the coating agent is not applied to the surrounding area but is applied only to the area constituting the liquid permeation adjusting section 300.

[0074] As shown in FIG. 5(G), in a modified example, the liquid permeability adjusting section 300 of the absorbent article 1G may be composed of a compressed section 35 obtained by compressing at least the absorbent core 31 in the thickness direction. The compressed section 35 may be obtained by compressing only the absorbent core 31, or may be obtained by compressing the absorbent core 31 together with other sheets (e.g., a core wrap sheet, an auxiliary sheet, etc.). The liquid permeability adjusting section 300 composed of the compressed section 35 has high rigidity, and can ensure the rigidity of the absorbent core 31 and can reduce the migration speed of bodily fluids from the skin side to the non-skin side compared to an area where the compressed section is not provided. More preferably, when the compressed section 35 is formed, silicon may be applied to the area where the compressed section 35 is to be provided, and the silicon may be transferred to the compressed section. With this configuration, the migration speed of bodily fluids in the liquid permeability adjusting section 300 can be further reduced. In another preferred embodiment, when the material (such as the absorbent core 31) for forming the compressed section 35 contains a thermoplastic resin, the thermoplastic resin may be dissolved when the compressed section 35 is formed. According to this configuration, the transfer speed of bodily fluids through the liquid permeation adjusting portion 300 can be further reduced.

[0075] As shown in FIG. 5(I), a test member 60 for testing the wearer's health condition may be disposed in the region of the liquid permeation adjusting section 300 on the non-skin side T2 of the liquid permeation adjusting section 300. In the embodiment shown in FIG. 5(I), a resin film 50 constituting the liquid permeation adjusting section 300 is disposed on the skin side T1 of the test member 60. By disposing the test member 60 in the region overlapping with the liquid permeation adjusting section 300, it is possible to prevent the test member 60 from coming into contact with excessive body fluids and suppress erroneous reactions. In addition, when the liquid permeation adjusting section 300 is configured to be less likely to wrinkle, it is possible to prevent excessive pressure from being applied to the test member 60 and to prevent the test member 60 from being wrinkled. The test member may be, for example, a member that displays the wearer's health condition (a color indicating the health condition) using an indicator, and for example, the test member described in JP 2020-022585 A can be applied. It is sufficient that at least a portion of the inspection member 60 is covered by the liquid permeability adjuster 300 , and preferably, the entire inspection member 60 may be covered by the liquid permeability adjuster 300 .

[0076] (3) Absorbent article according to the second embodiment Next, an absorbent article 1 according to a second embodiment will be described. The absorbent article 1 according to the second embodiment has an inspection member 60. FIG. 6 is a plan view of the absorbent article 1 as viewed from the skin side T1. FIG. 7 is a plan view of the absorbent article 1 as viewed from the non-skin side T2. FIG. 8 is a cross-sectional view taken along the line AA shown in FIG. 6. FIG. 9 is a cross-sectional view taken along the line BB shown in FIG. 6. FIG. 10 is a cross-sectional view taken along the line CC shown in FIG. 1. FIG. 11 is an enlarged view of a portion D shown in FIG. 10. The absorbent article 1 may have a front-rear direction L, a width direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (ventral side) to the rear side (back side) of the wearer, or a direction extending from the rear side to the front side of the wearer. The width direction W is a direction perpendicular to the front-rear direction L. The thickness direction T is a direction perpendicular to the front-rear direction L and the width direction W. The thickness direction T extends to the skin side T1 and the non-skin side T2. The skin side corresponds to T1, the side that faces the skin of the wearer in use. The non-skin side corresponds to the side opposite the skin side, i.e. the side that is turned away from the skin of the wearer in use.

[0077] The absorbent article 1 has a front region S1, a rear region S2, and a crotch region S3. The crotch region S3 is a region that is disposed opposite the wearer's excretory opening, for example, the vaginal opening. When the absorbent article 1 is attached to a worn article, the crotch region S3 is disposed under the crotch of the worn article and between the wearer's legs. The front region S1 is located forward of the crotch region S3. The front edge of the front region S1 defines the front edge of the absorbent article 1. The rear region S2 is located rearward of the crotch region S3. The rear edge of the rear region S2 defines the rear edge of the absorbent article 1. The crotch region S3 may be a region that is located in the center of the regions obtained by dividing the absorbent article 1 into three equal parts in the front-rear direction. In an absorbent article having wings, the crotch region S3 may be a region where the wings are provided.

[0078] In the present invention, the outer portion is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The outer edge of a component that occupies a certain range in the front-rear direction is an edge that connects points located on the outside in the width direction of the component throughout the entire component. The inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. The inner edge of a component that occupies a certain range in the front-rear direction is an edge that connects points located on the inside in the width direction of the component throughout the entire component. In addition, the front end and rear end in the present invention are portions that occupy a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and rear end edge are edges in the front-rear direction L. The outer end includes the front end and rear end, and the outer end edge includes the front end edge and rear end edge. In addition, the inner side is a side that includes the inner edge and extends along the front-rear direction L. The outer side is a side that includes the outer edge and extends along the front-to-rear direction L. In this specification, the term "along the front-to-rear direction L" means a direction having an angle of less than 45° with respect to the front-to-rear direction L, and the term "along the width direction W" means a direction having an angle of less than 45° with respect to the width direction W.

[0079] The absorbent article 1 may have at least an absorbent core 31, a top sheet 11, and a back sheet 21. The absorbent article 1 may have an elongated shape. The absorbent core 31 includes an absorbent material that absorbs liquid. The absorbent material may be composed of, for example, at least one of pulp and a superabsorbent polymer. The absorbent core 31 may be composed of an airlaid pulp sheet. The absorbent core 31 may be sandwiched in the thickness direction by a core wrap sheet.

[0080] The top sheet 11 constitutes the skin-facing surface of the absorbent article 1 and contacts the skin of the wearer. The top sheet 11 may be made of, for example, a spunlace nonwoven fabric, an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, or the like. The visible light transmittance of the top sheet 11 may be 60% or more. The visible light transmittance of the top sheet 11 may be preferably 70% or more, and more preferably 80% or more. The basis weight of the top sheet 11 is 90 g / m 2 or less, and 30 g / m 2 It may be less than 17 g / m 2 The thickness of the top sheet 11 may be 5 mm or less. The configuration of the top sheet 11 will be described in detail later.

[0081] The visible light transmittance can be measured, for example, using a spectrophotometer (JASCO V-570). Specifically, the visible light transmittance can be measured using a measurement target cut to 30 mm x 30 mm. In the following, the range of wavelengths of visible light is from 380 nm to 750 nm. The measurement conditions may be as follows. Metering mode: Abs Response:Medium Bandwidth: 2.0nm ·Near infrared: 8.0nm Scanning speed: 1000nm / min ·Starting wavelength: 830nm End wavelength: 350nm Data capture interval: 1.0 nm

[0082] The back sheet 21 constitutes the surface of the non-skin side T2 of the absorbent article 1. In the absorbent article 1 to be attached to a worn article, the back sheet 21 abuts against the worn article. The back sheet 21 may be, for example, made of a liquid-impermeable film, or may be a sheet that is liquid-impermeable and breathable. An example of a sheet that is liquid-impermeable and breathable is a film made of polyethylene resin and calcium carbonate, which has fine communicating holes on the surface and allows water vapor and air to pass through and blocks water. The non-skin side of the back sheet 21 may be provided with a fastening part 25 for joining the absorbent article 1 to a worn article (underwear, etc.). The fastening part 25 may be a part to which an adhesive such as a hot melt adhesive is applied, or a part to which an engaging member such as a mechanical fastener is provided. The fastening part 25 may extend in the width direction W, and a plurality of fastening parts 25 may be arranged at intervals in the front-rear direction L.

[0083] The absorbent article 1 may have an auxiliary sheet 15 arranged on the skin side T1 of the absorbent core 31. The auxiliary sheet 15 enhances the ability to draw bodily fluids from the top sheet 11 to the absorbent core 31. The auxiliary sheet 15 may be made of an air-through nonwoven fabric. The auxiliary sheet may be arranged on the non-skin side T2 of the test member 60 and on the skin side T1 of the absorbent core 31.

[0084] The absorbent article 1 may have a compressed region where compressed sections 35 are formed by compressing at least the top sheet 11 in the thickness direction T, and a non-compressed region where no compressed sections 35 are formed. The compressed region is a region where the compressed sections 35 are arranged in the plan view shown in FIG. 6, and the non-compressed region is a region where no compressed sections are arranged in the plan view. The compressed section 35 only needs to compress at least the top sheet 11, and may compress the top sheet 11 and the auxiliary sheet 15, or may compress the top sheet 11 and the absorbent core 31. The compressed section 35 in this embodiment is formed by compressing the top sheet 11 and the auxiliary sheet 15. The compressed sections 35 may be arranged on both sides of the center of the absorbent article 1 in the width direction W.

[0085] The absorbent article 1 has a test member 60 for testing the health condition of the wearer. The test member 60 indicates the health condition of the wearer by coloring (changing color) based on excrement. The test member 60 may be made of any material such as paper, nonwoven fabric, or woven fabric as long as it has a material capable of holding or containing an indicator. Examples of excrement (specimens) include blood (menstrual blood), urine, stool, sweat, and vaginal discharge. Examples of items indicating the health condition include physical condition-related items (pH, iron deficiency anemia, renal function, myocardial infarction, inflammation / infection, nutritional state evaluation, etc.), pregnancy-related items (menstrual cycle prediction, ovulation prediction, etc.), and mental health-related items (depression tendency, drugs, etc.). Examples of detection targets include urinary waste products (urine specific gravity), white blood cells, hydrogen ions (pH), protein, glucose, ketone bodies, urobilinogen, bilirubin, urinary occult blood, nitrite, steroids, peptides, aromatic compounds, FSH (follicle-stimulating hormone), BUN (urea nitrogen), AlB (albumin), LPS (lipopolysaccharide), hCG (human chorionic gonadotropin), LH (luteinizing hormone), U-ALB, CRP (C-reactive protein), myoglobin, CK-MB, troponin I, troponin T, hemoglobin, strep A, HBs antibody, HIV antibody, TP antibody, rotavirus, influenza virus, adenovirus, DNA, O-157, cocaine, marijuana, morphine, ferritin, and IgA (immunoglobulin A). The detection target is a chemical substance (inorganic or organic) determined according to an item indicating a health condition, and causes coloring by reacting with other chemical substances. The test member 60 can use, for example, an immunochromatography method or a test paper method to test the health condition.

[0086] The test member 60 of this embodiment is a test member using an immunochromatography method for detecting luteinizing hormone (LH) from vaginal discharge. The test member 60 may detect luteinizing hormone of 0.05mIU / mL to 10.0mIU / mL as positive. The absorbent article 1 is an item used daily, unlike conventional urinary luteinizing hormone (LH) test kits, and therefore can predict the ovulation date very easily, and also has the effect of relatively reducing psychological resistance. Furthermore, while a conventional ovulation date prediction using urine requires an operation such as applying urine to a test piece and may take a relatively long time (for example, 10 minutes), the absorbent article 1 allows a detection reaction to occur with discharge of vaginal discharge simply by wearing the absorbent article 1, making it easier to predict the ovulation date. For example, the absorbent article 1 allows the detection result to be checked when 10 minutes have passed since wearing the absorbent article 1, instead of waiting 10 minutes to check the test result, and is convenient because it can be checked in accordance with the timing of going to the toilet, etc. In addition, unlike the conventional method of using urine, the absorbent article of the present invention has the advantage that detection can be performed without worrying about soiling of the hands. Therefore, it is possible to provide an absorbent article that enables simple prediction of the day of ovulation.

[0087] In addition, as a result of the applicant's intensive research, it has been found that luteinizing hormone (LH) detected from vaginal discharge can predict the date from 5 days before ovulation to the day of ovulation. In contrast, luteinizing hormone (LH) detected from urine is for 2 days including the day of ovulation. More specifically, it is known that test elements for detecting LH from urine generally detect luteinizing hormone of 20.0mIU / mL to 100.0mIU / mL as positive. That is, since the range of LH amount contained in urine is wider than the range of LH amount contained in vaginal discharge, it is necessary to maintain the sensitivity of the test element for detecting LH from urine lower than that of the test element for detecting LH in vaginal discharge in order to eliminate noise. The test element for detecting LH in urine may pick up peaks other than the fertile window, and it is difficult to design the sensitivity of the test device to the same numerical range as vaginal discharge. Therefore, it is difficult to predict the date of ovulation more than 2 days before with urine using the test element for detecting LH in urine. In contrast, a test member that detects luteinizing hormone (LH) from vaginal discharge can specify a predicted date from 5 days to 3 days before the ovulation date. Therefore, a test member that detects luteinizing hormone (LH) from vaginal discharge can specify a predicted date from 5 days to 3 days before the ovulation date. Since it is possible to specify 5 days to 3 days before the ovulation date, pregnancy planning can be made. Compared to the conventional form that can be grasped on the day of ovulation or the day before, it is possible to reduce the burden of having to plan pregnancy planning on the day, etc., and to suppress pregnancy planning that cannot be done due to inability to plan in advance, thereby reducing mental burden and improving the ability to carry out pregnancy planning. In addition, the prediction of the ovulation date based on the menstrual cycle is specified about 2 weeks before the ovulation date. Considering individual differences, prediction with a period of 2 weeks may result in low accuracy. In addition, there is a disadvantage that 2 weeks is too long in terms of planning. In contrast, a test device that detects luteinizing hormone (LH) from vaginal discharge can pinpoint the predicted date between 3 and 5 days before ovulation, making it possible to predict the date of ovulation close to the date of ovulation, thereby improving the accuracy of ovulation predictions and increasing the viability of pregnancy attempts.

[0088] As shown in FIG. 11, the test member 60 may have a moving section 66 that moves excrement components, which are components contained in excrement, and guides them to the display section 62, and the display section 62 that changes color based on the excrement components guided from the moving section 66. The display section 62 displays the wearer's health condition. The display section 62 may display the wearer's health condition by the color after coloring, or may display the wearer's health condition by the presence or absence of coloring. The wearer can check the health condition by visually determining the color after coloring and / or the presence or absence of coloring. The display section 62 may include an indicator that changes color based on at least one of the excrement components and the labeled antibody. The indicator may include a chemical substance (inorganic substance, organic substance) that changes color by reacting with the detection target contained in the excrement or a substance derived from the detection target (for example, a complex formed by an antigen-antibody reaction between the detection target and an antibody). The indicator may also contain a chemical substance (inorganic or organic) that changes color by reacting with a labeled antibody (a chemical substance that undergoes an antigen-antibody reaction with the detection target) that has migrated with the excrement.

[0089] The testing member 60 may have a contact portion 64 that contacts the excrement. The contact portion 64 may be configured, for example, by a pad (which may be called a sample pad or specimen pad). The contact portion 64 may be configured to draw in the excrement and guide excrement components required for testing in the excrement to the moving portion 66. The display portion 62 may be configured by a plurality of display portions having different detection targets. The display portion 62 may have, for example, a first display portion 62A and a second display portion 62B. The first display portion 62A is located closer to the contact portion 64 than the second display portion 62B.

[0090] The movement section 66 may allow the excrement components to move by capillary action. The excrement components may include the detection target. The movement section 66 may have an indication movement section 66A where the excrement components move from the contact section 64 to the display section 62, and a terminal movement section 66B where the excrement components move in a direction away from the display section 62. The indication movement section 66A may have a first indication movement section 66A1 from the contact section 64 to the first display section 62A, and a second indication movement section 66A2 where the excrement components move between the multiple display sections 62 (in the embodiment, from the first display section 62A to the second display section 62B). The terminal movement section 66B is a section where the excrement components and the like that have passed through the display section 62 move.

[0091] To test the health condition, for example, immunochromatography can be used. In the immunochromatography, the contact section 64 with which the excrement comes into contact may be composed of a sample pad or a specimen pad. The excrement components that come into contact with the contact section 64 move through the display movement section 66A. Specifically, the excrement components move to the display section 62 in the first display movement section 66A1. The display section 62 contains an antibody (labeled antibody) that reacts with the detection target (antigen). The labeled antibody may be included in the first display movement section 66A1. The portion of the first display movement section 66A1 that contains the labeled antibody may be composed of, for example, a conjugated pad. In the first display movement section 66A1, the excrement components, the complex formed by the antigen-antibody reaction with the detection target contained in the excrement components, and the labeled antibody may move by capillary action. The portion to which these chemical substances move may be composed of, for example, a membrane. The transfer section 66 in this embodiment has a conjugate pad 66X and a membrane 66Y, and the labeled antibody is contained in the conjugate pad 66X.

[0092] The display section 62 is a region containing an indicator (capture antibody). The first display section 62A may contain a capture antibody that captures (binds) the complex. The first display section 62A changes color when the complex is captured by the capture antibody. The first display section 62A may be referred to as a test line. The complex, labeled antibody and excrement components not captured by the first display section may migrate through the second display migration section 66A2 and reach the second display section 62B from the first display section 62A.

[0093] The second display section 62B may include a capture antibody different from that of the first display section 62A. The capture antibody of the second display section 62B may capture a complex different from the complex captured by the first display section 62A, or may capture a labeled antibody. The second display section 62B changes color when the complex or the labeled antibody is captured by a capture antibody different from that of the first display section 62A. The second display section 62B that captures the labeled antibody may be called a control line, and is an indication for determining whether the test has been completed correctly, and changes color when the test has been completed correctly. The excrement components that have passed through the display section 62 (i.e., components that have not been captured by the capture antibody) move through the terminal movement section 66B. The terminal movement section 66B may be composed of a membrane 66Y. The test member 60 may also have an absorption section 67 that absorbs the excrement components that have passed through the display section 62. Instead of the absorption section 67, the excrement components that have passed through the display section 62 may be absorbed by the absorbent core 31. When the immunochromatography method is used, the display unit 62 and the contact unit 64 are disposed at different positions.

[0094] The inspection member 60 has a first direction which is the movement direction of the excrement components from the moving section 66 to the display section 62, and a second direction perpendicular to the first direction. The first direction is a direction extending in the movement direction of the excrement components, and in this embodiment, is a direction along the front-rear direction L of the absorbent article 1. That is, the first direction in this embodiment is the front-rear direction L, and the second direction is the width direction W. However, in a modified example, the first direction may be the width direction W, and the second direction may be the front-rear direction L. The length of the inspection member 60 in the first direction may be longer than the length in the second direction.

[0095] The length of the test member 60 along the width direction W may be 1 mm or more and 10 mm or less. Although there are individual differences, the width of the labia minora and the like is generally about 10 mm. By making the length of the test member along the width direction W shorter than the width of the labia minora and the like, the discomfort felt when worn can be reduced. From the viewpoint of visibility and workability of the wearer, the length of the test member 60 along the width direction W may preferably be 2 mm or more. Preferably, the length of the test member along the width direction W may be 3 mm or less. By making the length of the test member along the width direction W 3 mm or less, the amount of liquid that needs to be held for detection is relatively reduced. Therefore, even when vaginal discharge that is small in amount, has high viscosity, and has a small amount of LH is detected, LH can be detected satisfactorily.

[0096] Next, the configuration of a suitable test member will be described in detail. FIG. 12 is a cross-sectional photograph of a cross section along the width direction W of the test member 60. FIG. 12 is a cross-sectional view of the region where the membrane 66Y is arranged. FIG. 13 is a schematic diagram of a cross section along the width direction W of the test member 60. FIG. 13(A) is a cross-sectional view along the line F-F shown in FIG. 11, FIG. 13(B) is a cross-sectional view along the line G-G shown in FIG. 11, and FIG. 13(C) is a cross-sectional view along the line H-H shown in FIG. Note that the cross-sectional view of FIG. 13 is a schematic diagram, and the actual skin side surface of the test member 60 may be smoothly curved as shown in FIG. 12. More specifically, the skin side surface of the test member 60 may be curved and inclined from the non-skin side T2 to the skin side T1 from the outer edge 60E of the test member toward the inside in the width direction, and the average thickness of a certain range of the side region from the outer edge 60E of the test member toward the inside in the width direction may be thinner than the average thickness of the center region. The test member 60 of this embodiment has a sample pad 64Z as the contact portion 64, and a conjugate pad 66X and a membrane 66Y as the moving portion 66. The sample pad 64Z is disposed at one end (rear end in this embodiment) in the front-rear direction of the test member 60. The conjugate pad 66X is disposed on the non-skin side T2 of the sample pad 64Z. The conjugate pad 66X overlaps the other end (front end in this embodiment) of the sample pad 64Z in the front-rear direction L in the thickness direction, and does not overlap one end of the sample pad 64Z in the thickness direction T. Therefore, the excrement drawn into the sample pad 64Z is led to the conjugate pad 66X after passing through the sample pad 64Z. The membrane 66Y is disposed on the non-skin side T2 of the conjugate pad 66X. The membrane 66Y overlaps the other end of the conjugate pad 66X in the thickness direction T, but does not overlap one end of the conjugate pad 66X in the thickness direction. One end of the membrane 66Y and the other end of the sample pad 64Z are spaced apart in the front-rear direction L. Therefore, the excrement components move in the order of the sample pad 64Z, the conjugate pad 66X, and the membrane 66Y. A first display portion 62A and a second display portion 62B are provided on the surface of the membrane 66Y on the skin side T1.The first display portion 62A and the second display portion 62B are disposed in the front-rear direction L with an interval therebetween.

[0097] The test member 60 of this embodiment has a test skin side sheet 68, a test non-skin side sheet 69, and an absorbent section 67. The test skin side sheet 68 is made of a liquid-impermeable film. The test skin side sheet 68 constitutes the surface of the skin side T1 of the test member 60, and is disposed closer to the skin side T1 than any of the sample pad 64Z, the conjugated pad 66X, the membrane 66Y, the absorbent section 67, and the test non-skin side sheet 69. The test skin side sheet 68 does not cover the skin side T1 of a part of the region of the sample pad 64Z (the region of the sample pad 64Z not covered by the conjugated pad 66X), but covers the skin side T1 over the entire region of the sample pad 64Z covered by the conjugated pad 66X, the conjugated pad 66X, the membrane 66Y, and the absorbent section 67. The test non-skin side sheet 69 constitutes the surface of the non-skin side T2 of the test member 60, and is disposed closer to the non-skin side than the sample pad 64Z, the conjugated pad 66X, the membrane 66Y, the absorbent section 67, and the test skin side sheet 68. The test non-skin side sheet 69 covers the non-skin side T2 over the entirety of the sample pad 64Z, the conjugated pad 66X, the membrane 66Y, the absorbent section 67, and the test skin side sheet 68. The absorbent section 67 overlaps the other end of the membrane 66Y in the front-rear direction L in the thickness direction T, but does not overlap one end of the membrane 66Y in the thickness direction T. The absorbent section 67 is disposed closer to the skin side T1 than the membrane 66Y.

[0098] The labeled antibody of the test member 60 may have a colored antibody to which a molecule contributing to coloring is bound. The labeled antibody may be composed of only the colored antibody, or may have an antibody other than the colored antibody. The colored antibody is colored before coloring. The colored antibody may be colored in a color different from the member on which the colored antibody is arranged (for example, the conjugated pad). The color of the colored antibody can be, for example, blue, red, yellow, or white. In a plan view of the absorbent article 1, the color difference between the part on which the colored antibody is arranged and the surroundings of the colored antibody (in this embodiment, the part of the conjugated pad on which the colored antibody is not arranged) may be 3.0 or more. In this embodiment, the part on which the colored antibody is arranged is the conjugated pad 66X. The complex formed by the antigen-antibody reaction of the colored antibody is colored based on the colored antibody.

[0099] FIG. 14 shows an example of the coloring state of the display section 62 in a plan view of the test member 60 as viewed from the skin side T1. In FIG. 14, the area colored by the colored antibody is indicated by R1, and the colored area described below is indicated by R20. FIG. 14(A) shows the test member 60 before both the first display section 62A and the second display section 62B show a coloring reaction (hereinafter, referred to as "before coloring"). FIG. 14(B) shows a state during testing, and FIG. 14(C) shows the absorbent article 1 after both the first display section 62A and the second display section 62B show a coloring reaction (hereinafter, referred to as "after coloring"). FIG. 14(C) shows the coloring state when the detection target is detected (when the test line is colored). In the state before coloring shown in FIG. 14(A), the first display section 62A and the second display section 62B are integrated with the surroundings. The state in which the first display portion 62A and the second display portion 62B are integrated with the surroundings is when the color difference between the first display portion 62A and the surrounding membrane 66Y is less than 3.0, and when the color difference between the second display portion 62B and the surrounding membrane is less than 3.0. On the other hand, the state in which the first display portion 62A and the second display portion 62B can be distinguished from the surroundings (not integrated) is when the color difference between the first display portion 62A and the surrounding membrane 66Y is 3.0 or more, and when the color difference between the second display portion 62B and the surrounding membrane 66Y is 3.0 or more. In the pre-colored state, the wearer has difficulty recognizing the first display portion 62A and the second display portion 62B.

[0100] As shown in FIG. 14(B), during the test, the complex and the colored antibody move from the conjugate pad 66X, and the skin surface of the membrane 66Y is colored by the colored antibody and the complex colored by the colored antibody. The wearer can visually recognize the colored antibody and the colored complex during the test, and can understand that the test is proceeding. Furthermore, as the test progresses, the complex and the colored antibody move through the second display moving section 66A2 and move to the terminal moving section 66B. FIG. 14(C) shows the state after coloring, in which the first display section 62A is colored by the complex, and the second display section 62B is colored by the labeled antibody (including the colored antibody). The complex and the labeled antibody that are not captured by the first display section 62A and the second display section 62B move to the absorption section 67 and are adsorbed by the absorption section 67. In this way, by having the colored antibody, the wearer can understand the test process. The display section captures and colors at least one of the complex and the labeled antibody. By making the complex colored, the color produced by capturing the complex becomes more noticeable. Also, the color produced by capturing the colored antibody becomes more noticeable. Therefore, the display part after coloring can be made more noticeable, and the wearer can more easily understand the test results.

[0101] However, depending on the wearer, when visually checking the test member 60 before use, visually checking the colored antibody may give the mistaken impression that the color reaction has occurred even before the color reaction. The absorbent article 1 according to the present embodiment is configured to prevent the wearer from misunderstanding. More specifically, the absorbent article 1 has a colored region R20 that covers the skin side T1 of the colored antibody provided in the moving part 66. The colored region R20 only needs to cover the skin side T1 of the colored antibody before use of the test member 60, that is, before the colored antibody moves, and does not need to cover the skin side T1 of the colored antibody that has moved during the test process. Before use of the absorbent article 1, the skin side T1 of the colored antibody provided in the moving part 66 is covered by the colored region R20, so that when the wearer visually checks the absorbent article 1 before use from the skin side T1, the colored antibody is arranged on the back side of the colored region R20, making it difficult to directly visually check the colored antibody. The colored antibody is difficult for the wearer to see before use, and the wearer is prevented from mistakenly thinking that the test member 60 has already reacted before the absorbent article 1 is used.

[0102] The colored region R20 is configured to be visible from the skin side T1 of the absorbent article 1 before the absorbent article 1 is used. Therefore, by visually checking the colored region R20, the wearer can recognize that the absorbent article 1 has the inspection member 60, and can recognize the presence of the inspection member 60 and that the inspection result should be understood. The absorbent article 1 is used not only when performing an inspection, but also in daily use, and both the absorbent article 1 having the inspection member 60 and the absorbent article without the inspection member 60 may be used as appropriate. The user can recognize that the absorbent article 1 has the inspection member 60 by visually checking the colored region R20. In addition, even if the absorbent article having the inspection member 60 is worn for an inspection, the user may forget that the inspection is being performed while wearing the absorbent article. Even in such a case, when visually checking the absorbent article 1, such as when replacing the absorbent article 1, the user can notice the presence of the inspection member 60 again and appropriately understand the inspection result.

[0103] The colored region R20 may be provided in a member located on the skin side T1 of the colored antibody among the members constituting the absorbent article 1. The colored region R20 may be provided in the test member 60 itself, or in a member (e.g., a top sheet, a skin-side cover sheet described later, etc.) located on the skin side T1 of the test member 60. The colored region R20 may be provided in a single layer of sheet, or in multiple layers, with the colored regions overlapping in the thickness direction. The colored region R20 may be a portion of the sheet itself colored with a pigment or the like, or may be a portion partially colored by printing or the like. The colored region R20 may cover at least a portion of the colored antibody before coloring, but may preferably cover the entire colored antibody (the entire region R1 colored by the colored antibody). In a form having both an antibody not bound to a molecule contributing to coloring and a colored antibody, the colored region R20 may cover at least the colored antibody, and may not cover the antibody not bound to a molecule contributing to coloring. The colored region R20 in this embodiment is provided on the non-skin surface of the test skin side sheet 68 constituting the test member. The test skin side sheet 68 is made of a transparent resin film. The portion of the transparent resin film that is colored with ink or the like constitutes the colored region R20, and the uncolored portion constitutes the high transmittance region R25. Before coloring, the colored region R20 covers the region R1 in the conjugate pad 66X that is colored by the colored antibody.

[0104] The inspection member 60 may be visible from the skin side T1 of the absorbent article 1 before use of the absorbent article 1. Before use of the absorbent article 1, the display unit 62 is in a state before coloring. Therefore, the visibility of the inspection member 60 before use of the absorbent article can be replaced with the visibility of the inspection member 60 before coloring of the display unit 62. The state in which the inspection member 60 is visible before use of the absorbent article 1 may be a state in which at least a part of the inspection member 60 before coloring is visible. In addition, it is sufficient that the user can recognize the presence of the inspection member 60, and includes not only a configuration in which the inspection member 60 can be directly recognized, but also a state in which the surface of the skin side of the absorbent article 1 is raised by the inspection member 60 and the presence of the inspection member can be recognized by the raised portion. Before use of the absorbent article 1, the inspection member 60 is visible from the skin side T1 of the absorbent article 1, so that the position of the inspection member 60 of the absorbent article 1 can be recognized when worn. The wearer can place the inspection member 60 in an appropriate position by being aware of the presence of the inspection member 60 when putting on the absorbent article 1.

[0105] The display unit 62 after coloring may be visible from the skin side T1 of the absorbent article 1. Since the display unit 62 after coloring is visible from the skin side T1 of the absorbent article 1, the wearer can easily understand the test result by visually viewing the absorbent article 1 from the skin side T1 of the absorbent article 1 without peeling the absorbent article 1 off the worn article or taking the absorbent article 1 off the worn article. Note that the display unit 62 only needs to be visible from the skin side T1 of the absorbent article 1 at least after coloring, and may be invisible from the skin side T1 of the absorbent article 1 before coloring, or may be visible from the skin side T1 of the absorbent article 1 before coloring.

[0106] The state where the absorbent article 1 is visible from the skin side may be a state where a visible light transmittance is 60% or more when a member located on the skin side of an object to be evaluated for visibility (for example, the test member when evaluating the visibility of the test member 60) is overlapped. Alternatively, the state where the absorbent article 1 is visible from the skin side means that a subject with good eyesight (1.0 or more) in both eyes can see the object when looking at it from the skin side T1 of the absorbent article 1 at a distance of about 30 to 50 cm in a room (approximately 500 to 750 lx (lux)) brightly lit with daylight white light (approximate color temperature 4600 to 5400 K (Kelvin)).

[0107] The test member 60 may be disposed on the non-skin side T2 of the top sheet 11 and on the skin side T1 of the back sheet 21. The test member 60 is visually recognized through the top sheet 11 from the skin side T1 of the absorbent article 1. The visible light transmittance of the top sheet 11 may be 60% or more. This allows the wearer to more clearly visually recognize the color of the indicator portion after coloring through the top sheet 11, making it easier to understand whether the indicator portion 62 has changed color. The color difference between the top sheet 11 and the indicator portion 62 after coloring may be 0.6 or more, and preferably 3.0 or more. According to this configuration, the color of the indicator portion 62 after coloring is less likely to be similar to the color of the top sheet 11, making it easier to visually recognize the indicator portion 62 after coloring. The user can easily recognize whether the indicator portion has changed color without removing the test member 60 from the absorbent article, making it easier to check the user's health condition simply and accurately.

[0108] The test member 60 may be visible from the skin side T1 of the absorbent article 1 and invisible from the non-skin side T2 of the absorbent article 1 before the display unit 62 changes color. Since the test member 60 is visible from the skin side T1 of the absorbent article 1 before the display unit 62 changes color, the position of the test member 60 of the absorbent article 1 can be grasped when wearing it, and the test member 60 can be arranged at an appropriate position. Since the test member 60 is not visible from the non-skin side T2 of the absorbent article 1 before the display unit 62 changes color, the skin side and non-skin side of the absorbent article 1 can be intuitively grasped by the visibility of the test member 60, and operability at the time of wearing can be improved. In addition, the colored antibody may be invisible from the non-skin side T2 of the absorbent article 1 before use of the absorbent article 1. Therefore, even when viewed from the non-skin side T2 of the absorbent article 1, misrecognition before use of the absorbent article 1 can be suppressed.

[0109] The state in which it is not visible from the non-skin side T2 of the absorbent article 1 may be a state in which the visible light transmittance is 20% or less when a member located on the non-skin side T2 is overlapped with an object for which visibility is to be evaluated (for example, the test member when the visibility of the test member 60 is to be evaluated). Alternatively, the state in which it is not visible from the non-skin side of the absorbent article 1 means that an object cannot be seen when a subject with good vision (1.0 or more) in both eyes looks at the object from the non-skin side T2 of the absorbent article 1 at a distance of about 30 to 50 cm in a room brightly lit with daylight white light (approximate color temperature: 4600 to 5400 K (Kelvin)) (approximate color temperature: 500 to 750 lx (lux)).

[0110] The inspection member 60 may be disposed on the skin side T1 of the absorbent core 31. The inspection member 60 is disposed on the skin side T1 of the absorbent core 31, and the skin side T1 is not covered by the absorbent core 31. This makes it easy to ensure visibility of the inspection member 60 when viewed from the skin side T1 of the absorbent article 1. When putting on the absorbent article 1, the wearer can put on the absorbent article 1 while being aware of the presence of the inspection member 60, and the inspection member 60 can be disposed in an appropriate position. Furthermore, after the inspection of the inspection member 60, the wearer can easily understand the inspection result.

[0111] The top sheet 11 and the back sheet 21 are composed of sheets having fibers, and the average inter-fiber distance of the back sheet 21 may be smaller than the inter-fiber distance of the top sheet 11. According to this configuration, the inspection member 60 is easily visible from the skin side T1 of the absorbent article 1 before and after the display unit 62 changes color, and the inspection member 60 is difficult to see from the non-skin side T2 of the absorbent article 1. It is easy to ensure the visibility of the inspection member 60 from the skin side T1 of the absorbent article 1, and the operability at the time of wearing the absorbent article 1 can be improved by increasing the distinguishability between the skin side and the non-skin side of the absorbent article 1. The average inter-fiber distance can be evaluated, for example, by measuring the average inter-fiber distance of the surface to be measured (the skin side surface of the top sheet 11) by a method using a microscope, and measuring the average inter-fiber distance of the non-skin side surface of the back sheet 21 by a method using a microscope. In the method using a microscope, a 3D image linking function of a microscope (KEYENCE VHX-2000, lens VH-Z20W, aperture open) was used to obtain an enlarged image in which the focus was aligned from the skin side surface of the sample to a depth of 100 μm, and the outside of the fibers in focus was extracted based on the enlarged image. The surface formed there was taken as the fiber space. The diameter of the maximum inscribed circle of the fiber space was taken as the fiber space distance, and the average value of 100 fiber spaces was taken as the average fiber distance. In addition, the fiber density of the back sheet 21 may be higher than the fiber density of the top sheet 11. Since the fibers of the back sheet 21 are dense and the fibers of the top sheet 11 are sparse, the visibility through the back sheet 21 is low and the visibility through the top sheet 11 is high, making it easy to visually recognize the inspection member 60 from the skin side T1 of the absorbent article 1 and difficult to visually recognize the inspection member 60 from the non-skin side T2 of the absorbent article 1.

[0112] As shown in FIG. 13, the inspection member 60 has a center region RC located at the center of the inspection member 60 in the second direction (width direction W in this embodiment) and side regions RS located at both ends of the inspection member 60 in the second direction, among the regions obtained by dividing the inspection member 60 into five equal parts in the second direction (width direction W in this embodiment). The center region RC straddles the center of the inspection member 60 in the second direction. The side regions RS extend from the outer end edge of the inspection member 60 in the second direction to the inside in the second direction (when the second direction is the width direction as in this embodiment, from the outer edge 60E in the width direction of the inspection member to the inside in the width direction). The display unit 62 may be disposed at least in the center region RC. The display unit 62 may extend outward in the second direction from the center region RC, may be disposed between the center region RC and the side region RS, or may be disposed continuously from the center region RC to the side region RS.

[0113] The average thickness of the center region RC of the test member 60 may be thicker than the average thickness of the side region RS of the test member 60. The center region RC has a thicker average thickness than the side region RS, and a large volume of space through which excrement components move can be secured. Therefore, excrement components move easily in the center region RC along the first direction, and a color reaction is easily observed in the display section 62 in the center region RC. By showing a color reaction in the center region RC located at the center of the second direction of the test member 60, the wearer can easily visually recognize the color reaction, and the visibility of the test result can be improved. In addition, the edge of the test member in the second direction is surrounded by regions that absorb excrement, such as the absorbent core and the top sheet 11, and the visibility may be reduced by the excrement absorbed in the surrounding regions. On the other hand, the center region RC is located away from the excrement absorbed in the surrounding regions, and the visibility is unlikely to be reduced by the excrement. Therefore, by showing a color reaction in the display section 62 of the center region RC, the wearer can easily grasp the test result. The average thickness may be determined by measuring 10 points in each region using a cross-sectional photograph (see, for example, FIG. 12) of a cross section along the second direction, and averaging the measured values. The thickness of the center region RC and the thickness of the side region RS are the distance in the thickness direction between the skin-side surface of the test member 60 and the non-skin-side surface of the test member 60 in each region. The thickness of the display portion is the distance in the thickness direction between the skin-side surface of the display portion and the non-skin-side surface of the display portion. The thickness of the top sheet 11 is the distance in the thickness direction between the skin-side surface of the top sheet 11 and the surface of the top sheet 11. The side regions RS are disposed at both ends of the test member in the second direction. The average thickness of at least one of the side regions may be thinner than the average thickness of the center region RC, but preferably the average thickness of both side regions may be thinner than the average thickness of the center region RC.

[0114] As shown in FIG. 11 and the like, the test member 60 is configured to have a plurality of members each having the function of a moving section 66, a display section 62, and the like. The top sheet 11 may cover at least a part of the test member 60, but may cover the entire area of ​​the test member 60. In a configuration in which the average thickness of the side region RS is thinner than the average thickness of the center region RC and the top sheet 11 covers the entire area of ​​the test member 60, the edge of the test member 60 is less likely to get caught even if an external force is applied to the test member 60 due to the wearer's movement or the like when worn. Therefore, it is possible to suppress the curling of the edge of the test member 60 and the misalignment of the members constituting the test member, and the test accuracy can be maintained. In addition, by suppressing the curling and twisting of the edge of the test member, it is possible to suppress local changes in the thickness and density of each component. If the thickness and density change locally, there is a risk that the movement of excrement components will stagnate in the changed part, or that the color reaction will be difficult to occur. However, it is possible to suppress local changes in the thickness and density of each component, and suppress a decrease in the test accuracy.

[0115] The density of the center region RC is lower than that of the side region RS. The density can be calculated by cutting out each region with the same planar dimensions in the range including the cross section where the average thickness was measured, and using the weight of each region and the average thickness. The center region RC has less space within and between the components than the side region RS, and the side region RS has more space within and between the components than the center region RC. The excrement components moving in the test member 60 move easily in the relatively sparse center region RC, and do not move easily in the relatively dense side region RS. Therefore, the excrement components move easily in the first direction in the center region RC, and a color reaction is easily shown in the display part in the center region RC. By showing a color reaction in the center of the second direction of the test member, the wearer can easily visually recognize the color reaction, and the visibility of the test result can be improved.

[0116] In a cross section along the second direction, the average thickness of the display portion 62 in the center region RC may be thicker than the average thickness of the display portion 62 in the side region RS. A color reaction is likely to occur in the display portion 62 in the center region RC. Since a color reaction is likely to occur in the center of the test member 60 in the second direction, the wearer can easily visually recognize the color reaction, improving the visibility of the test results. In a configuration in which the display portion is constituted by an indicator disposed on a membrane, as in this embodiment, the average thickness of the membrane in the center region RC may be thicker than the average thickness of the membrane in the side region RS.

[0117] The average thickness of the top sheet 11 in the region covering the side region RS may be thicker than the average thickness of the top sheet 11 in the region covering the center region RC. Since the average thickness of the top sheet 11 covering the center region RC is thin, the body fluid can be quickly guided from the top sheet 11 side to the test member 60 side without being retained in the top sheet 11. Therefore, a color reaction is easily shown in the display portion 62 in the center region RC. By showing a color reaction in the center of the test member 60 in the second direction, the wearer can easily visually recognize the color reaction, and the visibility of the test result can be improved. The side regions RS are disposed at both ends of the test member in the second direction. The average thickness of the top sheet 11 covering at least one of the side regions may be thicker than the average thickness of the top sheet 11 covering the center region RC, but preferably the average thickness of both top sheets 11 covering both side regions may be thicker than the average thickness of the top sheet 11 covering the center region RC.

[0118] In a configuration in which the average thickness of the top sheet 11 in the area covering the side region RS is thicker than the average thickness of the top sheet 11 in the area covering the center region RC, and the entire area of ​​the inspection member 60 is covered by the top sheet 11, the thickness of the top sheet 11 covering the side region RS is relatively thick, so that the top sheet 11 can absorb external forces applied to the edges of the inspection member, thereby suppressing curling at the edges of the inspection member and misalignment of the components that make up the inspection member.

[0119] The density of the top sheet 11 in the region covering the center region RC may be higher than the density of the top sheet 11 in the region covering the side region RS. Because the density of the top sheet 11 covering the center region RC is relatively high and the density of the top sheet 11 covering the side region RS is relatively low, the top sheet 11 can guide excrement from the side region RS to the center region RC and guide the excrement components to the center in the second direction, promoting a color reaction in the center of the test member in the second direction.

[0120] In order to further promote the color reaction at the center in the second direction of the test member 60, the indicator 62 at the center in the second direction may be configured to stand out. For example, the area ratio of the indicator 62 in the center region RC may be configured to be higher than the area ratio of the indicator 62 in the side region RS. Alternatively, the basis weight of the indicator constituting the indicator 62 may be made different, and the basis weight of the indicator in the center region RC may be higher than the basis weight of the indicator in the side region RS.

[0121] The first direction may be the front-rear direction L, and the second direction may be the width direction W. When worn, the absorbent article is pinched between the legs and is easily subjected to a force from the outside to the inside in the width direction. Therefore, the outer edge, which is the end edge in the width direction of the test member, is more likely to receive external force than the center in the width direction of the test member. However, in a configuration in which the average thickness of the side region is thinner than the average thickness of the center region, the relatively thin side region is less likely to receive external force, and deformation in the outer part of the test member can be suppressed, and a color reaction based on the excrement component can be exhibited without inhibiting the movement of the excrement component. In addition, in a configuration in which the average thickness of the top sheet in the region covering the side region is thicker than the average thickness of the top sheet in the region covering the center region, the relatively thick top sheet absorbs the external force related to the side region, suppresses deformation in the outer part of the test member, and is able to exhibit a color reaction based on the excrement component without inhibiting the movement of the excrement component. In addition, when the density of the side region located on the outer part of the test member is high, deformation of the outer part of the test member is suppressed, and a color reaction based on the excrement components can be exhibited without inhibiting the movement of the excrement components.

[0122] The inspection member 60 may be arranged to be biased to one side in the front-rear direction with respect to the center of the front-rear direction L of the absorbent article 1, and the contact portion 64 may be arranged at the end of the inspection member 60 on the other side in the front-rear direction. For example, the inspection member 60 may be biased forward with respect to the center of the front-rear direction L of the absorbent article 1, and the contact portion 64 may be arranged at the rear end of the inspection member 60. Alternatively, the inspection member 60 may be biased rearward with respect to the center of the front-rear direction L of the absorbent article 1, and the contact portion 64 may be arranged at the front end of the inspection member 60. The contact portion 64 is arranged at the end of the inspection member on the other side in the front-rear direction, is located toward the center of the absorbent article in the front-rear direction, and is likely to be arranged near the excretion opening. Therefore, the contact portion can smoothly draw in the excrement. Preferably, the inspection member 60 may be biased forward with respect to the center of the front-rear direction L of the absorbent article 1. According to this configuration, the test member 60 is easily visible to the wearer, the wearer can easily recognize the presence of the test member 60, and the wearer can easily visually confirm the test results. The other end of the contact portion 64 may be covered by a non-skin side sheet, not by a skin side sheet described later. The other end of the contact portion is covered by a liquid-impermeable non-skin side sheet, which prevents excrement from coming into contact with the non-skin side, while being not covered by the skin side sheet, which makes it easier for excrement from the skin side to come into contact with the other end.

[0123] The inspection member 60 may be disposed at the center of the absorbent article 1 in the width direction W. At least a part of the inspection member 60 may be disposed at the center of the absorbent article 1 in the width direction W. This configuration makes it easier to arrange the contact portion 64 facing the excretion opening. By arranging the inspection member 60 facing the excretion opening, it is easier to guide excrement to the inspection member 60, and after the inspection of the inspection member, the wearer can easily understand the inspection result. The center of the absorbent article 1 in the width direction W may include the center of the absorbent article 1 in the width direction W, and may be in a range of 10 mm from the center to the outside in the width direction. Preferably, it may be disposed across the center of the absorbent article 1 in the width direction W. The contact portion 64 of the inspection member 60 may be disposed in the crotch region S3.

[0124] In a plan view of the absorbent article, the inspection member 60 may be disposed at an incline with respect to the front-rear direction L of the absorbent article 1. The inspection member 60 may be disposed at an incline with respect to the front-rear direction L in such a manner that the outer edge of the inspection member 60 in the width direction W is not parallel to the front-rear direction L but is inclined, or the inspection center line connecting the center of the width direction W at the front end of the inspection member 60 and the center of the width direction W at the rear end of the inspection member 60 is not parallel to the front-rear direction L but is inclined. By the inspection member 60 being inclined with respect to the front-rear direction L of the absorbent article 1, the inspection member 60 becomes more noticeable with respect to the outer edges of other components of the absorbent article 1 (e.g., top sheet, absorbent core), and the user can easily recognize the presence of the inspection member 60. Preferably, the length of the inspection member 60 in the front-rear direction L may be longer than the length of the inspection member 60 in the width direction W. The wearer can easily recognize the inclined state of the inspection member 60. Moreover, the angle between the inspection center line of the inspection member 60 and the front-rear direction L may be 20 degrees or less, and preferably may be 3 degrees or more and 10 degrees or less.

[0125] The compression section 35 may have a first compression section 351 and a second compression section 352 arranged to sandwich the inspection member 60 in the width direction W. The first compression section 351 and the second compression section 352 may be arranged at an interval in the width direction W, and the inspection member 60 may be arranged between the first compression section 351 and the second compression section 352. As shown in FIG. 8, a distance G11 in the width direction between the first compression section 351 and the inspection member 60 may be different from a distance G12 in the width direction W between the second compression section 352 and the inspection member 60. Note that when comparing the distance G11 and the distance G12, they are compared on the same imaginary line extending parallel to the width direction W. In addition, in a form in which a plurality of first compression sections 351 and a plurality of second compression sections 352 are provided, comparison is made between compression sections having shapes that are symmetrical with respect to a center line that passes through the center of the absorbent article 1 in the width direction and extends in the front-rear direction L. The first compressing portion 351 and the second compressing portion 352 may extend in the front-to-rear direction L. By having the first compressing portion 351 and the second compressing portion 352 extend in the front-to-rear direction L, it becomes easier to make the inspection member stand out relatively to the first compressing portion and the second compressing portion. Note that the configuration in which the compressing portion 35 extends in the front-to-rear direction L includes not only a linear shape extending in the front-to-rear direction, but also a configuration in which a collection of multiple compressing portions arranged at intervals is arranged to extend in the front-to-rear direction.

[0126] The outer portion of the inspection member 60 may be formed with a convex portion that protrudes outward in the width direction W, and a concave portion that is recessed inward in the width direction W relative to the convex portion. The convex portions and the concave portions may be alternately formed in line in the front-rear direction L. With this configuration, the outer portion of the inspection member 60 becomes more noticeable, making it easier for the user to recognize the presence of the inspection member 60. The widthwise length of the convex portion and the widthwise length of the concave portion may be 20 μm or more and 60 μm or less, and the front-rear length of the convex portion and the front-rear length of the concave portion may be 50 μm or more and 400 μm or less.

[0127] In a cross section along the front-rear direction L, the skin-side surface of the test member 60 may be inclined toward the non-skin side T2 from the center of the test member 60 in the front-rear direction L toward the outer end of the test member 60. Since the skin-side surface is inclined toward the non-skin side T2 toward the outside of the front-rear direction L of the test member 60, when bodily fluid reaches the skin-side surface of the test member 60, the bodily fluid can be guided to the non-skin side T2 while being guided to the outside of the front-rear direction L of the test member 60. Therefore, bodily fluid is unlikely to remain on the test member 60, and it is possible to prevent bodily fluid from reaching the inside of the test member 60 from an unintended path. In addition, bodily fluid is unlikely to remain on the test member 60, and it is possible to prevent a decrease in visibility due to bodily fluid remaining on the test member 60.

[0128] As shown in FIG. 12 and FIG. 13, in a cross section along the width direction W, the skin side surface of the test member 60 may be inclined toward the non-skin side T2 from the center of the width direction W of the test member 60 toward the outer part of the test member 60. Since the skin side surface of the test member 60 is inclined toward the non-skin side T2 toward the outer side of the width direction W of the test member 60, when a body fluid reaches the skin side surface of the test member 60, the body fluid can be guided to the non-skin side T2 while being guided to the outer side of the width direction W of the test member 60. Therefore, the body fluid is unlikely to remain on the test member 60, and it is possible to prevent the body fluid from reaching the inside of the test member 60 from an unintended route. In addition, the body fluid is unlikely to remain on the test member 60, and it is possible to prevent a decrease in visibility due to the body fluid remaining on the test member 60. When determining whether the skin side surface of the test member is inclined toward the non-skin side, it may be visually confirmed whether the test member has an inclined portion by a photograph of a cross section along the front-rear direction or a cross section along the width direction of the test member. Alternatively, the test member may be divided into five equal parts in the front-rear or width direction, and the position of the skin surface of the central portion may be compared with the position of the skin surface of the end portion to determine whether the skin side of the test member is inclined toward the non-skin side. The configuration in which the skin side surface of the test member is inclined toward the non-skin side may be such that the end portion of the test member is pressed more tightly than the center and has a higher density, or such that the number of materials or the basis weight of the material at the end portion of the test member is less than that at the center.

[0129] 13, the skin side sheet may be inclined toward the non-skin side from the center in the width direction W of the skin side sheet toward the outer edge in the width direction W of the skin side sheet. The excrement discharged onto the skin side sheet is guided along the skin side sheet from the center in the width direction toward the side in the width direction to the non-skin side. Thus, the excrement can be guided from the side in the width direction of the inspection member to the non-skin side while preventing it from being directly guided to the moving section.

[0130] The color of the colored antibody provided in the moving section 66 may be similar to the color of the colored region R20. According to this configuration, the colored antibody can be hidden by the colored region R20 of similar color, making the colored antibody less noticeable. When comparing the color of the colored antibody provided in the moving section with the color of the colored region, the color of the colored antibody itself provided in the moving section, that is, the color of the colored antibody in a state not covered by the colored region and the color of the colored region are compared. Similar colors include the same color. In this specification, the color "different" means that the hue is 5 or more (preferably 8 or more, more preferably 10 or more), the brightness is 1 or more (preferably 2 or more, more preferably 3 or more), or the saturation is 1 or more (preferably 2 or more, more preferably 3 or more) away from each other in the Munsell color system (100 hues). In this specification, the term "similar" or "similar" means that the hue is less than 5, the brightness is less than 1, or the saturation is less than 1 in the Munsell color system (100 hues), and includes the case where the colors are the same. Alternatively, the term "different" means that, in terms of color difference ΔE, ΔE is 1 or more, preferably ΔE is 2 or more, more preferably ΔE is 3 or more, and even more preferably ΔE is 5 or more. In this case, the term "similar" or "similar" means that the color difference ΔE is less than 1. Note that a white-based color is a color with L* of 70 or more, preferably 80 or more, and more preferably 90 or more. However, the above color difference is measured as follows. (1) Prepare an X-Rite eXact Standard (measurement diameter: 1.5 mm) manufactured by X-Rite. (2) The CIE L*a*b* coordinates of the part of the sample to be measured are measured at 10 or more points at different positions, and the average value ([L1*, a1*, b1*]) is calculated. (3) The L*a*b* coordinates of the parts of the samples to be compared are measured at 10 or more points in different positions, and the average value ([L2*, a2*, b2*]) is calculated. (4) The color difference ΔE is calculated using the following formula:

number

[0131] The color difference between the color of the colored antibody provided in the moving part 66 and the color of the colored region R20 may be 3.0 or more. Since the color of the colored antibody and the color of the colored region R20 are different from each other while the effect of concealing the colored antibody is obtained by the colored region R20, the wearer can easily grasp the process of the colored antibody moving during the test and the coloring by the complex after the test is completed. Therefore, the visibility of the test result can be improved while suppressing misrecognition before use.

[0132] The color difference between the area of ​​colored region R20 that overlaps with the colored antibody in the thickness direction T and the area of ​​colored region R20 that does not overlap with the colored antibody may be 3.0 or more. The colored region R20 has the effect of concealing the colored antibody, while allowing the wearer to grasp the area where the colored antibody is disposed. The wearer can grasp the area where the colored antibody is disposed, and handle the absorbent article carefully by grasping the parts that will affect the test, such as by putting the absorbent article on without touching the area where the colored antibody is disposed. This makes it possible to suppress a decrease in test accuracy.

[0133] The skin side T1 of the first display portion 62A and the second display portion 62B may not be covered by the colored region R20. That is, the colored region R20 may be disposed in a region that does not overlap with the first display portion 62A and the second display portion 62B in the thickness direction T. This configuration ensures visibility of the first display portion 62A and the second display portion 62B from the skin side T1 of the absorbent article 1, allowing the wearer to understand the test results.

[0134] The brightness of the area where the colored area R20 is arranged on the surface of the skin side T1 of the absorbent article 1 may be lower than the brightness of the area where the first display unit 62A is arranged after coloring. Since the brightness of the area where the colored area R20 is arranged is lower than the brightness of the area where the first display unit 62A is arranged, the first display unit 62A is less noticeable than the colored area R20 when viewed from the skin side T1 of the absorbent article 1 after coloring. Therefore, while suppressing the colored labeled antibody from being visible from the skin side T1 of the absorbent article before use of the absorbent article, the first display unit 62A can be made noticeable after coloring, and the wearer can easily understand the test result. In addition, the brightness of the area where the colored area R20 is arranged on the surface of the skin side T1 of the absorbent article 1 may be lower than the brightness of the area where the second display unit 62B is arranged after coloring. Since the brightness of the area where the colored area R20 is arranged is lower than the brightness of the area where the second indication portion 62B is arranged, the second indication portion 62B is more noticeable than the colored area R20 when viewed from the skin side of the absorbent article after coloring. Therefore, while preventing the colored labeled antibody from being viewed from the skin side of the absorbent article before use of the absorbent article, the second indication portion 62B can be made noticeable after coloring, allowing the wearer to easily understand the test results.

[0135] In a modified example, the brightness of the area where the colored area R20 is arranged on the skin side T1 of the absorbent article may be higher than the brightness of the area where the first display unit 62A is arranged after coloring. According to this embodiment, the brightness of the area where the colored area R20 is arranged is higher than the brightness of the area where the first display unit 62A is arranged, and when viewed from the skin side of the absorbent article after coloring, the colored area R20 is more noticeable than the first display unit 62A. Since the colored area R20 that does not cover the display unit is noticeable, the wearer can easily distinguish and recognize the colored area R20 and the first display unit 62A, and the wearer can easily understand the test result. In addition, the brightness of the area where the colored area R20 is arranged on the skin side of the absorbent article may be higher than the brightness of the area where the second display unit 62B is arranged after coloring. According to this embodiment, the brightness of the area where the colored area R20 is arranged is higher than the brightness of the area where the second display portion 62B is arranged, and when viewed from the skin side of the absorbent article after coloring, the colored area R20 is more noticeable than the second display portion 62B. Because the colored area R20 that does not cover the display portion is noticeable, the wearer can easily distinguish and recognize the colored area R20 and the second display portion 62B, and the wearer can easily understand the test results.

[0136] The lightness may be the lightness in the Munsell color system, and can be measured by visual colorimetry, which is visually judged by comparing with a color sample. Specifically, for example, the color can be judged by visually comparing the Munsell symbol (color sample) of a visually equal interval numerical scale with the color (hue, lightness, and saturation) of the object to be measured, using the expanded version of the Munsell system color ruler published by Nippon Shikiken Co., Ltd.

[0137] The colored region R20 may be provided on a liquid-impermeable sheet. According to this configuration, the skin side T1 of the colored antibody is covered by the liquid-impermeable sheet. Therefore, it is possible to prevent excrement from directly reaching the colored antibody side from the skin side T1 of the colored antibody. The excrement reaches the area where the colored antibody is provided after passing through a predetermined path (the contact part in this embodiment). It is possible to prevent a decrease in test accuracy caused by excrement components other than those necessary for the test reaching the area where the colored antibody is provided, and to improve the test accuracy. In this embodiment, the sheet on which the colored region R20 is provided is a liquid-impermeable test skin side sheet 68. The test skin side sheet 68 does not cover the skin side T1 of a part of the area of ​​the contact part 64, but covers the moving part 66 and the display part 62. Therefore, the excrement is guided to the moving part 66 and the display part 62 via the contact part 64, and it is possible to prevent the excrement from directly reaching the moving part and the display part. The contact portion acts as a filter and can guide excrement components required for testing from the excrement to the transfer portion and the display portion.

[0138] The liquid-impermeable sheet provided with the colored region R20 may have a high-transmittance region R25 having a visible light transmittance higher than that of the colored region R20. The display unit 62 may be covered by the high-transmittance region R25. The high-transmittance region may be a region of the liquid-impermeable sheet where no colored region is provided. Since the display unit 62 is covered by the high-transmittance region R25, the visibility of the display unit 62 can be ensured. In addition, by covering the skin side T1 of the display unit 62 with a liquid-impermeable sheet, it is possible to prevent excrement from reaching the display unit side directly from the skin side of the display unit. The high-transmittance region R25 may cover at least a part of the display unit 62, but preferably may cover the entire display unit 62.

[0139] The colored region R20 may have a first colored region R21 that covers the colored antibody of the moving portion, and a second colored region R22 that covers the skin side T1 of the absorbent portion 67. By covering the absorbent portion 67 with the second colored region R22, the colored absorbent portion 67 becomes difficult to see when the wearer views the absorbent article 1 from the skin side T1. By making the colored absorbent portion 67 difficult to see, the display portion 62 stands out relatively, and the visibility of the test results can be improved.

[0140] The first colored region R21 and the second colored region R22 may be disposed at an interval in the front-rear direction L. The display unit 62 may be disposed between the colored regions R20 in the front-rear direction L. By covering the moving portion 66 and the absorbent portion 67 with the colored region R20 and disposing the display unit 62 between the colored regions R20, the moving portion 66 and the absorbent portion 67 are concealed and the display unit 62 stands out relatively, making it easier for the wearer to focus on the test results.

[0141] In addition, by providing the first colored region R21 and the second colored region R22 on either side of the display section 62 in the front-rear direction L, the range in which the test results are displayed can be displayed to the wearer. The first display section 62A and the second display section 62B are colored by capturing the complex and the labeled antibody, and are configured to be difficult to see from the skin side T1 of the absorbent article 1 before coloring. Therefore, it may be difficult for the wearer to grasp the area in which the test results are displayed. However, by sandwiching the display section 62 between the first colored region R21 and the second colored region R22, the area in which the test results are displayed is divided by the first colored region R21 and the second colored region R22, and the wearer can easily grasp the area in which the test results are displayed. The area of ​​the first colored region R21 and the area of ​​the second colored region R22 may be larger than the total area of ​​the first display section 62A and the second display section 62B. By increasing the area of ​​the first colored region R21 and the area of ​​the second colored region R22, the region in which the test result is shown becomes clearer. In the vertically elongated test member 60 as in this embodiment, the length in the front-rear direction L of the first colored region R21 and the length in the front-rear direction L of the second colored region R22 may be longer than the total length of the length in the front-rear direction L of the first display portion 62A and the length in the front-rear direction L of the second display portion 62B. By increasing the length in the front-rear direction L of the first colored region R21 and the length in the front-rear direction L of the second colored region R22, the region in which the test result is shown becomes clearer.

[0142] The absorbent article 1 may include a first hydrophobic portion 71 having hydrophobic properties that covers the skin side T1 of the display portion 62 of the test member. The first hydrophobic portion 71 covers the skin side T1 of the display portion 62, thereby preventing excrement from reaching the display portion 62 directly from the skin side T1 of the display portion 62. This prevents the visibility of the display portion 62 from being reduced by excrement that reaches the display portion 62 directly. Note that the first hydrophobic portion 71 may cover at least a part of the skin side T1 of the display portion 62, but may preferably cover the entire skin side T1 of the display portion 62 (the first display portion 62A and the second display portion 62B).

[0143] The first hydrophobic section 71 of the present embodiment is composed of the skin-side cover sheet 18 and the test skin-side sheet 68. The first hydrophobic section 71 may be composed of only one of the skin-side cover sheet 18 and the test skin-side sheet 68. Both the skin-side cover sheet 18 and the test skin-side sheet 68 are liquid-impermeable sheets and constitute the "skin-side sheet" of the present invention. That is, the skin-side sheet covers the skin side T1 of the display unit 62. By covering the skin side T1 of the display unit 62 with the liquid-impermeable skin-side sheet, it is possible to prevent excrement from reaching the display unit 62 directly from the skin side T1 of the display unit 62. The "skin-side sheet" is a liquid-impermeable sheet that constitutes the "liquid permeability adjustment section". The skin-side sheet may be arranged to overlap the test member in the thickness direction. By arranging the skin-side sheet to overlap the test member in the thickness direction, it becomes difficult for bodily fluids from the skin side of the absorbent article to reach the test member directly, and the test accuracy of the test member can be improved. The skin-side cover sheet 18 is a separate sheet from the test member 60, and is located on the skin side T1 relative to the test skin-side sheet 68. The test skin-side sheet 68 is a sheet that constitutes the test member 60. The test skin-side sheet 68 constitutes the "first skin-side sheet" of the present invention, and the skin-side cover sheet 18 constitutes the "second skin-side sheet" of the present invention.

[0144] The hydrophobic portion (including the first hydrophobic portion 71, the second hydrophobic portion 72, and the third hydrophobic portion 73) may be a portion having low liquid permeability in which the permeation of liquid is reduced compared to the surroundings, or may be a portion having liquid impermeability that does not allow liquid to pass through. The hydrophobic portion may be a portion to which a hydrophobic coating agent is applied, or a portion to which a liquid impermeable sheet is arranged. Examples of the hydrophobic coating agent include an adhesive (HMA type adhesive) and a water repellent agent (silicone). In FIG. 8, the ranges in the width direction of the first hydrophobic portion 71, the second hydrophobic portion 72, and the third hydrophobic portion 73 are shown.

[0145] The first hydrophobic portion 71 only needs to cover at least the skin side T1 of the display portion 62, and may cover the skin side T1 of the region of the test member 60 other than the display portion 62. The first hydrophobic portion 71 may cover the skin side T1 of the moving portion 66. Since the skin side T1 of the moving portion is covered by the first hydrophobic portion 71, excrement is less likely to reach the moving portion directly, and the test accuracy can be improved. In addition, the first hydrophobic portion 71 does not need to cover at least a part of the skin side T1 of the contact portion 64. Since the first hydrophobic portion 71 does not cover at least a part of the skin side T1 of the contact portion 64, excrement is guided into the contact portion 64 through at least a part of the contact portion 64, and is guided to the moving portion 66 through the contact portion 64. Since the first hydrophobic portion 71 covers the skin side T1 of the moving portion 66, excrement can be prevented from reaching the moving portion 66 directly. Therefore, the excrement components required for the test can be guided to the moving part 66 via the contact part 64, improving the test accuracy. By improving the test accuracy, accurate test results can be quickly shown, and the user can easily understand the test results. Note that the first hydrophobic part 71 only needs to cover at least a part of the skin side T1 of the moving part 66, but preferably covers the entire skin side T1 of the moving part 66.

[0146] The first hydrophobic portion 71 may be disposed so as to cover the skin side T1 of a portion other than the part of the contact portion 64. It can be configured so that excrement comes into direct contact only with a predetermined region (a portion) of the contact portion 64, and the portion other than the part of the contact portion 64 is likely to exhibit a filtering function that moves only necessary components to the movement portion 66 side.

[0147] The skin-side sheet (skin-side cover sheet 18 in this embodiment) constituting the first hydrophobic portion 71 may be disposed on the skin side T1 of the test member 60, and may be disposed across the contact portion 64, the moving portion 66, and the display portion 62. The skin-side sheet spans the contact portion 64, the moving portion 66, and the display portion 62, and is continuous from the contact portion 64 to the display portion 62. Since the first hydrophobic portions 71 are provided continuously, it is possible to prevent excrement from penetrating the test member side through gaps between the first hydrophobic portions 71, and to prevent excrement from reaching the test member through unintended paths. The skin-side sheet constituting the first hydrophobic portion 71 may cover a part of the skin side of the contact portion 64 (it does not have to cover the entire area of ​​the contact portion), and may preferably cover less than 50% of the entire area of ​​the contact portion, more preferably cover less than 20% of the entire area of ​​the contact portion, and even more preferably cover less than 10% of the entire area of ​​the contact portion.

[0148] As shown in FIG. 11, a hollow HP may be formed between the skin side sheet and the display unit 62. That is, the non-skin side surface of the skin side sheet and the skin side surface of the display unit 62 may be arranged with a gap in the thickness direction T. According to this configuration, when a force is applied from the skin side T1 of the absorbent article 1 to the test member 60 side due to pressure when worn, the hollow HP can absorb the pressure from the skin side T1. The display unit 62 can be prevented from being crushed due to pressure when worn, and the test result can be displayed by the display unit 62. In this embodiment, in the region in front of the display unit 62, the absorbent unit 67 and the second colored region R22 are arranged between the membrane 66Y and the test skin side sheet 68, and in the region behind the display unit 62, the conjugate pad 66X and the sample pad 64Z are arranged between the membrane 66Y and the test skin side sheet 68. Therefore, a hollow part HP is formed between the display part 62 and the skin side sheet, and the display part 62 is configured not to be pressed by the skin side sheet. Preferably, the thickness of the sample pad 64Z and the thickness of the conjugate pad 66X may be 0.5 mm or more. The hollow part HP is a space formed between the members constituting the test member. The hollow part HP may be provided in an area other than between the skin side sheet and the display part 62 (between the test skin side sheet 68 and the display part), and may be provided between the sample pad 64Z and the test non-skin side sheet 69, between the conjugate pad 66X and the colored area R20, and between the membrane 66Y and the test skin side sheet 68, as shown in FIG. 13.

[0149] The visible light transmittance of the skin side sheet constituting the first hydrophobic region 71 may be higher than that of the absorbent core 31. Because the visible light transmittance of the skin side sheet constituting the first hydrophobic region 71 is relatively high, it is possible to prevent the presence of the skin side sheet from decreasing the visibility of the inspection member 60. By covering the display unit 62 with the skin side sheet, it is possible to prevent the visibility of the display unit 62 from being decreased by excrement that reaches the display unit 62 directly from the skin side T1, while preventing the decrease in visibility of the inspection member 60 from being decreased by the high visible light transmittance.

[0150] The absorbent article 1 may include a second hydrophobic portion 72 having hydrophobic properties and covering the non-skin side T2 of the display portion 62 of the test member 60. The absorbent core 31 may be disposed on the non-skin side T2 of the second hydrophobic portion 72. Since the second hydrophobic portion 72 covers the non-skin side T2 of the display portion 62 and is disposed between the test member 60 and the absorbent core 31, it is possible to prevent the excrement absorbed in the absorbent core 31 from moving directly to the display portion 62. It is possible to prevent the visibility of the display portion 62 from being reduced by the excrement absorbed in the absorbent core 31. The test member 60 is disposed on the skin side T1 of the absorbent core 31, and the skin side T1 is not covered by the absorbent core 31. Therefore, it is easy to ensure the visibility of the display portion 62 when viewed from the skin side T1 of the absorbent article 1. The user can easily understand the test result. The second hydrophobic portion 72 may cover at least a portion of the non-skin side T2 of the display portion 62, but preferably may cover the entire non-skin side T2 of the display portion 62 (the first display portion 62A and the second display portion 62B).

[0151] The second hydrophobic portion 72 of the embodiment is composed of the non-skin side cover sheet 19 and the test non-skin side sheet 69. The second hydrophobic portion 72 may be composed of only one of the non-skin side cover sheet 19 and the test non-skin side sheet 69. Both the non-skin side cover sheet 19 and the test non-skin side sheet 69 are liquid-impermeable sheets and constitute the "non-skin side sheet" of the present invention. That is, the non-skin side sheet covers the non-skin side T2 of the display portion 62. By covering the non-skin side T2 of the display portion 62 with the liquid-impermeable non-skin side sheet, it is possible to suppress the movement of excrement absorbed in the absorbent core 31 to the display portion 62, and to suppress the decrease in visibility of the display portion 62 due to the excrement moving from the absorbent core 31. The "non-skin side sheet" is a liquid-impermeable sheet that constitutes the "liquid permeability adjustment portion". The non-skin side sheet may be arranged overlapping the test member in the thickness direction. By arranging the non-skin side sheet so that it overlaps the test member in the thickness direction, it becomes difficult for bodily fluids from the non-skin side of the test member to directly reach the test member, improving the test accuracy of the test member. Note that the non-skin side cover sheet 19 is a sheet separate from the test member 60, and is located on the non-skin side T2 of the test non-skin side sheet 69. The test non-skin side sheet 69 is a sheet that constitutes the test member 60. The test non-skin side sheet 69 constitutes the "first non-skin side sheet" of the present invention, and the non-skin side cover sheet 19 constitutes the "second non-skin side sheet" of the present invention.

[0152] The second hydrophobic portion 72 only needs to cover at least the non-skin side T2 of the display portion 62, and may cover the non-skin side T2 of the region of the test member 60 other than the display portion 62. The second hydrophobic portion 72 may cover the non-skin side T2 of the contact portion 64 and the non-skin side T2 of the moving portion 66. Since the second hydrophobic portion 72 covers the non-skin side T2 of the contact portion 64 and the non-skin side T2 of the moving portion 66, the excrement absorbed in the absorbent core 31 can be prevented from moving to the contact portion 64 and the moving portion 66. Therefore, the excrement components required for the test can be guided to the moving portion 66 via the contact portion 64, and the test accuracy can be improved. By improving the test accuracy, accurate test results can be quickly shown, and the user can easily understand the test results. In addition, the second hydrophobic portion 72 may cover at least a portion of the non-skin side T2 of the moving portion 66 and at least a portion of the non-skin side T2 of the contact portion 64, but preferably covers the entire non-skin side T2 of the moving portion 66 and the entire non-skin side T2 of the contact portion 64.

[0153] The non-skin-side cover sheet 19 as a non-skin-side sheet covers the non-skin side T2 of the test member 60, and may be disposed across the outer edge of the test member 60 in the width direction W. The non-skin-side cover sheet 19 separate from the test member 60 can prevent excrement from penetrating into the test member from the non-skin side of the test member. The skin-side cover sheet 18 as a skin-side sheet covers the skin side T1 of the test member 60, and may be disposed across the outer edge of the width direction W of the test member 60. The skin-side cover sheet 18 separate from the test member 60 can prevent excrement from penetrating into the test member 60 from the skin side T1 of the test member 60.

[0154] The bending stiffness of the non-skin side cover sheet 19 may be lower than the bending stiffness of the side region of the test member 60. Since the bending stiffness of the non-skin side cover sheet 19 covering the non-skin side T2 of the test member 60 is relatively low, the region of the non-skin side T2 is more easily deformed than the test member 60, and the hardness of the test member 60 is less felt. Furthermore, since the bending stiffness of the side region is relatively high, the test member 60 can be prevented from turning over. Furthermore, the bending stiffness of the non-skin side cover sheet 19 may be lower than the bending stiffness of the test non-skin side sheet 69. The non-skin side cover sheet 19 is disposed closer to the non-skin side T2 than the test non-skin side sheet 69. Since the bending stiffness of the non-skin side cover sheet 19 covering the non-skin side T2 of the test member 60 is relatively low, the region of the non-skin side T2 is more easily deformed than the test member 60, and the hardness of the test member 60 is less felt.

[0155] The bending stiffness of the skin-side cover sheet 18 may be lower than the bending stiffness of the side region of the test member 60. Since the bending stiffness of the skin-side cover sheet 18 covering the skin side T1 of the test member 60 is relatively low, the region of the skin side T1 is more easily deformed than the test member 60, and the hardness of the test member 60 is less likely to be felt. Since the bending stiffness of the side region is relatively high, the test member 60 can be prevented from turning over. The bending stiffness of the skin-side cover sheet 18 may be lower than the bending stiffness of the test skin-side sheet 68. The skin-side cover sheet 18 is disposed closer to the skin side T1 than the test skin-side sheet 68. Since the bending stiffness of the skin-side cover sheet 18 covering the skin side T1 of the test member 60 is relatively low, the region of the skin side T1 is more easily deformed than the test member 60, and the hardness of the test member 60 is less likely to be felt.

[0156] Here, the bending stiffness can be measured by the KES method. Specifically, it can be performed using a bending tester KES-FB2-AUTO-A manufactured by Kato Tech Co., Ltd., and samples of a size that can be measured for each of the cover sheet and the test member are prepared. It is preferable to measure the bending stiffness of the test member by cutting out a sample so as to include a portion where the antibody is present, and measuring the stiffness of the portion containing the antibody. Next, each sample is fixed between the chucks of the tester so that the bending stiffness in the lateral direction can be measured for each sample. The sample is bent to the front side to a maximum curvature of +2.5 cm-1, then bent to the back side to a maximum curvature of -2.5 cm-1, and then returned to its original state. The bending stiffness value is calculated from the average value of the slope when the slope of the bending moment with respect to the curvature becomes almost constant after starting to bend to the front side and the slope when the slope of the bending moment with respect to the curvature becomes almost constant after starting to bend to the back side. Repeat five times for each sample, and the average value is taken as the bending stiffness.

[0157] The skin side sheet and the non-skin side sheet may abut at least on the outer side of the inspection member 60 in the width direction. In this embodiment, the skin side cover sheet 18 as the skin side sheet and the non-skin side cover sheet 19 as the non-skin side sheet abut on the outer side of the inspection member 60 in the width direction W. The skin side sheet and the non-skin side sheet abut against each other to prevent the intrusion of excrement from the skin side T1, the non-skin side T2 and the sides of the inspection member 60, and to prevent excrement from reaching the inspection member through an unintended route. The skin side sheet and the non-skin side sheet may abut on each other at least on the outer side of the inspection member in the front-to-rear direction. In this embodiment, the skin side cover sheet 18 and the non-skin side cover sheet 19 abut on the outer side of the inspection member 60 in the width direction W. The skin-side cover sheet 18 and the non-skin-side cover sheet 19 abutting against each other suppress the intrusion of excrement from the skin side T1, non-skin side T2, and sides of the test member 60, and suppress the excrement from reaching the test member 60 through unintended paths. Preferably, the skin-side cover sheet 18 and the non-skin-side cover sheet 19 may be joined outside the test member 60 in the width direction W. Examples of such joining include joining with an adhesive or joining by welding such as thermal welding. With this configuration, it is possible to further suppress the intrusion of excrement from the skin side, non-skin side, and sides of the test member 60, and further improve the test accuracy.

[0158] The outer edge of the skin-side sheet and the outer edge of the non-skin-side sheet may be misaligned in the width direction W. That is, the outer edge of the skin-side cover sheet 18 may be misaligned in the width direction W with at least one of the outer edge of the non-skin-side cover sheet 19 and the outer edge of the test non-skin-side sheet 69. The outer edge of the test skin-side sheet 68 may be misaligned in the width direction with at least one of the outer edge of the non-skin-side cover sheet 19 and the outer edge of the test non-skin-side sheet 69. The absorbent article 1 is sandwiched between the legs and receives a force from the outside toward the inside in the width direction W. At this time, the outer edge of the non-skin-side sheet and the outer edge of the skin-side sheet are misaligned in the width direction, and multiple deformation base points are provided at intervals in the width direction W, gradually weakening the force received from the outside in the width direction W, allowing the shape of the test member 60 to be maintained, while also softening the impact on the legs and suppressing discomfort when worn. Furthermore, the outer edge of the skin side cover sheet 18 and the outer edge of the test skin side sheet 68 may be misaligned in the width direction W, and the outer edge of the non-skin side cover sheet 19 and the outer edge of the test non-skin side sheet 69 may be misaligned in the width direction W. With this configuration, the outer edges of the sheets are arranged in more stages, providing more deformation base points and gradually weakening the force directed toward the test member from the outside in the width direction.

[0159] The outer edge of the test member 60 in the front-rear direction may be covered by at least one of the first non-skin side sheet (test non-skin side sheet 69), the second non-skin side sheet (non-skin side cover sheet 19), the first skin side sheet (test skin side sheet 68), and the second skin side sheet (skin side cover sheet 18). By covering the outer edge of the test member with any one of the sheets, discomfort caused by the rigidity of the test member when worn can be suppressed. In the front-rear direction L, the outer edge of the first non-skin side sheet, the outer edge of the second non-skin side sheet, the outer edge of the first skin side sheet, and the outer edge of the second skin side sheet may be offset. It is sufficient that at least one of the outer edges of the four sheets is offset, and preferably, all of the outer edges of each sheet may be offset. Since the outer edge of the first non-skin side sheet, the outer edge of the second non-skin side sheet, the outer edge of the first skin side sheet, and the outer edge of the second skin side sheet are offset in the front-to-back direction, multiple deformation base points can be provided at intervals in the front-to-back direction, and the absorbent article having the inspection member can be positioned along the front-to-back curvature of the body.

[0160] The absorbent article 1 may include third hydrophobic portions 73 that are disposed on both sides of the test member 60 in the width direction W and have hydrophobic properties. The third hydrophobic portions 73 are disposed on the outer side of the outer edge of the test member 60 in the width direction W, and suppress the intrusion of excrement from the sides of the test member 60. The length in the width direction W of each third hydrophobic portion 73 may be longer than the length in the width direction W of the test member 60. The length in the width direction W of the third hydrophobic portion 73 is longer than the length in the width direction W of the test member 60, and the intrusion of excrement from the sides of the test member can be suppressed over a wide range extending from the test member 60 to the outside in the width direction W. Excrement is unlikely to be disposed adjacent to the sides of the test member, and a decrease in visibility of the test member due to excrement accumulating on the sides of the test member can be suppressed. The third hydrophobic portion 73 in the embodiment is composed of a portion that extends outward in the width direction W beyond the test member in the non-skin side cover sheet 19, and a portion that extends outward in the width direction W beyond the test member in the skin side cover sheet 18.

[0161] The skin side T1 of the test member 60 may be covered by a sheet having lower breathability than the top sheet 11. The sheet having lower breathability than the top sheet 11 may have lower breathability than the top sheet 11 or may be non-breathable. By covering the skin side of the test member 60 with a sheet having lower breathability than the top sheet 11, the test member 60 can be prevented from drying out from the skin side T1 of the test member 60. The test member 60 can maintain an appropriate humidity, and when excrement and excrement components are guided, the excrement components can be smoothly moved, and the test can be performed appropriately. In this embodiment, the skin side cover sheet 18 is disposed on the non-skin side T2 of the top sheet 11 and on the skin side T1 of the test member 60. The skin side cover sheet 18 is made of a transparent resin film, and the breathability of the skin side cover sheet 18 is lower than the breathability of the top sheet 11. The skin side cover sheet 18 constitutes a sheet having lower breathability than the top sheet 11. Furthermore, the widthwise length and front-rear length of the skin-side cover sheet 18 are shorter than those of the members (e.g., the top sheet 11, the auxiliary sheet 15, and the absorbent core 31) arranged around the skin-side cover sheet 18, and the breathability of the members arranged around the skin-side cover sheet 18 is higher than that of the skin-side cover sheet 18. The high breathability of the members arranged around the skin side ensures the fluidity and breathability of bodily fluids within the absorbent article.

[0162] As shown in FIG. 11, the skin-side cover sheet 18, like the test skin-side sheet, does not cover the skin side T1 of a part of the region of the sample pad 64Z (the region of the sample pad not covered by the conjugated pad), but covers the skin side T1 over the region of the sample pad 64Z covered by the conjugated pad 66X, the conjugated pad 66X, the membrane 66Y, and the entire absorbent section 67. The skin-side cover sheet 18 can also prevent excrement from directly reaching the moving section 66 and the display section 62. The width of the skin-side cover sheet 18 is longer than the width of the test member 60, and the outer edges of both sides of the skin-side cover sheet 18 may be located outside the outer edges of the test member 60 in the width direction W. The skin-side cover sheet 18 can prevent excrement from entering the test member from the skin side and sides, and can prevent excrement from reaching the test member 60 through unintended paths. In the width direction of the absorbent article, the outer edges on both sides of the skin-side cover sheet 18 may be located outside the outer edges of the test skin-side sheet 68. The skin-side cover sheet 18 prevents the infiltration of excrement from the skin side T1 and the sides of the test member 60, and prevents the excrement from reaching the test member 60 through unintended routes.

[0163] The skin-side coversheet 18 is disposed between the top sheet 11 and the inspection member 60, and may be configured to be visible through the top sheet 11 from the skin side T1 of the absorbent article 1. By recognizing the presence of the skin-side coversheet 18, the wearer has the impression that the inspection member 60 is protected, and can use the absorbent article 1 with peace of mind. If the skin-side coversheet 18 is made of a resin film, when the absorbent article 1 is visually inspected from the skin side T1 of the absorbent article 1, the skin-side coversheet 18 is easily noticeable due to diffuse reflection of light by the resin film. Therefore, the wearer can recognize the presence and position of the inspection member 60 by focusing on the skin-side coversheet 18.

[0164] The test member 60 is disposed on the skin side T1 of the absorbent core 31, and the absorbent article 1 may have a liquid-impermeable non-skin side cover sheet 19 disposed between the test member 60 and the absorbent core 31. By covering the non-skin side T2 of the test member 60 with the liquid-impermeable non-skin side cover sheet 19, it is possible to prevent the excrement absorbed in the absorbent core 31 from migrating to the display area 62. It is possible to prevent the visibility of the display area 62 from being reduced by the excrement absorbed in the absorbent core 31. In addition, it is possible to guide the necessary excrement components to the display area 62 via the contact area 64, thereby improving the accuracy of the test.

[0165] The test member 60 is disposed on the skin side T1 of the absorbent core 31, and the non-skin side T2 of the test member 60 may be covered with a sheet having lower breathability than the absorbent core 31. The sheet having lower breathability than the absorbent core 31 may have lower breathability than the absorbent core 31 or may be non-breathable. By covering the non-skin side T2 of the test member 60 with a sheet having lower breathability than the absorbent core 31, the test member 60 can be prevented from drying out from the non-skin side T2 of the test member 60. The test member 60 can maintain an appropriate humidity, and when excrement and excrement components are guided, the excrement components can be smoothly moved, and the test can be performed appropriately. In this embodiment, the non-skin side cover sheet 19 is made of a resin film, and the breathability of the non-skin side cover sheet 19 is lower than the breathability of the absorbent core 31. The non-skin side cover sheet 19 constitutes a sheet having lower breathability than the absorbent core 31. Furthermore, the widthwise length and front-rear direction length of the non-skin-side cover sheet 19 are shorter than those of the members (e.g., the top sheet 11, the auxiliary sheet 15, and the absorbent core 31) arranged around the non-skin-side cover sheet 19, and the breathability of the members arranged around it is higher than that of the non-skin-side cover sheet 19. The high breathability of the members arranged around it ensures the fluidity and breathability of bodily fluids within the absorbent article.

[0166] The breathability of the back sheet 21 may be higher than that of at least one of the skin side cover sheet 18 and the non-skin side cover sheet 19. At least one of the skin side cover sheet 18 and the non-skin side cover sheet 19 can suppress drying of the test member, while the back sheet can suppress stuffiness after the absorbent core has absorbed bodily fluids.

[0167] As shown in FIG. 11, the skin-side cover sheet 18 may be shifted rearward from the test skin-side sheet 68. The skin-side cover sheet 18 may extend forward from the front edge of the test member 60. The non-skin-side cover sheet 19 may be shifted rearward from the test non-skin-side sheet 69. The non-skin-side cover sheet 19 may extend rearward from the rear edge of the test member 60. The non-skin-side cover sheet 19 covers the entire non-skin side T2 of the sample pad 64Z, the conjugated pad 66X, and the membrane 66Y. The width of the non-skin-side cover sheet 19 is longer than the width of the test member 60, and the outer edges of both sides of the non-skin-side cover sheet 19 may be located outside the outer edges of the test member 60 in the width direction W. The non-skin-side cover sheet 19 can prevent excrement from entering the test member 60 from the non-skin side T2 and sides, and can prevent excrement from reaching the test member 60 from an unintended route. In the width direction of the absorbent article, the outer edges on both sides of the non-skin side cover sheet 19 may be located outside the outer edges of the non-skin side test sheet 69. The non-skin side cover sheet 19 prevents excrement from penetrating from the non-skin side T2 and the sides of the test member 60, and prevents excrement from reaching the test member 60 through unintended routes.

[0168] The test member 60 of the present embodiment tests the wearer's health condition from vaginal discharge. As described above, vaginal discharge is suitable as a target for testing health condition in excrement, but the amount discharged is small and it can be difficult to detect. In addition, vaginal discharge has a high viscosity in excrement and is difficult to reach the test member 60, making it difficult to obtain appropriate test results. For this reason, the top sheet 11 of the present embodiment is configured to enable appropriate testing of health condition using vaginal discharge. Next, the configuration of the top sheet 11 will be described in detail.

[0169] The top sheet 11 is disposed on the skin side T1 of the test member 60 and contacts the skin surface of the wearer. Vaginal discharge excreted from the wearer is applied to the skin side of the top sheet 11 and is guided to the test member 60 side through the top sheet 11. The top sheet 11 allows 6% or more of an artificial body fluid having a viscosity of 15 to 30 Pa·s at 23°C (hereinafter referred to as a predetermined viscosity) that is in contact with the skin side surface of the top sheet 11 to permeate to the non-skin side surface of the top sheet. As a result of intensive research by the applicant, it was found that the viscosity of general vaginal discharge is 15 to 30 Pa·s at 23°C, and that the artificial body fluid of the predetermined viscosity exhibits a permeation mode similar to that of vaginal discharge. The top sheet 11 allows a high ratio of 6% or more of the artificial body fluid of the predetermined viscosity that is in contact with the skin side surface T1 to permeate to the non-skin side surface of the top sheet 11. Therefore, even vaginal discharge, which has a higher viscosity than urine and menstrual blood, can permeate the top sheet 11 and be guided to the test member 60, and even a small amount of vaginal discharge can permeate the top sheet 11 at a high rate and be guided to the test member 60, thereby obtaining appropriate test results based on the vaginal discharge. The artificial body fluid permeation test, which measures the artificial body fluid that permeates the top sheet, will be described in detail later.

[0170] When a sufficient amount of artificial body fluid is to be measured, the viscosity is measured as follows. (1) Prepare the following equipment: Thermo Fisher Scientific Co., Ltd. HAAKE RheoStress 1 (sensor: Cone φ60mm, 1° angle C60 / 1) (2) Pour 38 ml of the antibacterial liquid to be measured into the container provided with the device and immerse the measuring probe in the artificial body fluid. (3) Viscosity measurements are performed under the following conditions: Temperature 23℃, humidity 60%, shear rate: 10.0 (l / s)

[0171] The top sheet 11 may be configured to allow 6% or more of the artificial body fluid in contact with the skin-side surface of the top sheet 11 to permeate to the non-skin-side surface of the top sheet 11 in a pressed state in which the skin-side surface of the top sheet 11 is pressed to the wearer's side with a pressure of 1.60 to 1.70 kPa. When worn, various forces are applied to the absorbent article 1. As a result of the applicant's intensive research, the skin-side surface of the top sheet 11 is in a pressed state in which it is pressed to the wearer's side with a pressure of at least 1.60 to 1.70 kPa in various situations, such as when the wearer changes his / her posture or when the worn article with the absorbent article 1 attached is pulled up. At this time, 6% or more of the artificial body fluid in contact with the skin-side surface T1 of the top sheet 11 is permeated to the non-skin-side surface of the top sheet 11, so that vaginal discharge that has permeated the top sheet 11 can be guided to the testing member 60 side, and appropriate test results can be obtained based on the vaginal discharge.

[0172] The absorbent article 1 may be an absorbent article that is attached to the inner surface of the wearing article S when used. The pressed state may be a state in which the outer surface of the wearing article S is pressed toward the wearer so that the skin side surface of the top sheet 11 of the absorbent article 1 abuts against the skin side of the wearer. FIG. 15 shows a cross section along the width direction of the wearing article S with the absorbent article 1 attached when worn by a wearer. FIG. 15 shows a state in which the absorbent article 1 is pressed toward the wearer and a state in which the absorbent article 1 is not pressed toward the wearer. For convenience of explanation, in FIG. 10, the absorbent article 1 is shown with the components other than the test member 60, the skin side cover sheet 18, and the non-skin side cover sheet 19 omitted. In FIG. 15, V is a vaginal opening, S is a wearing article, and F is a wearer's finger.

[0173] FIG. 15(A) shows an example of a state in which the wearing article S with the absorbent article 1 attached is not pressed against the wearer, i.e., a normal wearing state. Panty liners, unlike sanitary napkins, absorb a small amount of excrement, and are not used for a specific period of time like sanitary napkins, but are used daily. Therefore, unlike sanitary napkins that are used together with sanitary shorts, panty liners are often used attached to underwear that is used daily. Therefore, panty liners are not pressed against the wearer like sanitary napkins are pressed by sanitary shorts, and a gap is likely to occur between the wearer and the absorbent article 1, as shown in FIG. 15(A). In addition, a gap is likely to occur between the wearer and the absorbent article 1 due to pubic hair around the vaginal opening V.

[0174] In order to carry out the test using the test member 60, the wearer can intentionally press the outer surface of the worn article S toward the wearer so that the skin-side surface of the top sheet 11 of the absorbent article 1 comes into contact with the skin-side surface of the wearer. The wearer generally presses with a finger so as not to apply excessive force to the delicate genital area, and presses so as to fill the gap between the skin-side surface of the top sheet of the absorbent article 1 and the skin-side surface of the wearer. FIG. 15(B) shows a state in which a finger is placed on the non-skin-side surface of the worn article, and FIG. 15(C) shows a state in which the outer surface of the worn article S is pressed toward the wearer with a finger. As a result of the applicant's intensive research, when the wearer presses the outer surface of the worn article S toward the wearer with a finger, the top sheet 11 is pressed toward the wearer with a pressure of at least 1.60 to 1.70 kPa. In this pressed state, vaginal discharge that has passed through the top sheet 11 is guided toward the test member 60, and an appropriate test result can be obtained based on the vaginal discharge.

[0175] The top sheet 11 and the test member 60 may be in contact with each other. At least a part of the skin-side surface of the test member 60 may be in contact with the non-skin-side surface of the top sheet 11. In the absorbent article 1 of this embodiment, the skin-side cover sheet 18 is disposed between the top sheet 11 and the test member 60. The skin-side cover sheet 18 does not cover a part of the sample pad 64Z as the contact portion 64. Therefore, the top sheet 11 and the test member 60 are in contact with each other in the region where the skin-side cover sheet 18 is not disposed. According to this configuration, the vaginal discharge can be directly guided to the test member 60 via the top sheet 11, and the excrement can be quickly and reliably guided to the test member 60. Note that, in order to ensure the permeability of body fluids, it is preferable that no adhesive is applied to the part where the top sheet 11 and the test member 60 are in contact with each other.

[0176] The length of the width direction W of the inspection member 60 may be shorter than the width of a woman's finger. When a finger is placed on the wearing article S along the front-rear direction L of the absorbent article and pressed against it, the finger width is arranged along the width direction W of the inspection member 60. Since the length of the width direction W of the inspection member 60 is shorter than the width of a woman's finger, the entire inspection member 60 can be pressed by the finger. Here, in this specification, the "finger width" does not mean the thickness of the finger, but specifically means the width of the finger in the direction in which the nail spreads. In consideration of the action of placing a finger on the outer surface of the wearing article and pressing it, the "finger width" may be at least one of the widths of a typical woman's middle finger, index finger, and ring finger, and is set to, for example, 10 mm to 18 mm.

[0177] The length in the width direction W of the non-skin-side coversheet 19 covering the non-skin-side of the test member 60 may be shorter than the finger width. According to this configuration, when a finger is placed on the worn article along the front-rear direction L of the absorbent article 1 and pressed against it, the entire width direction W of the test member 60 can be pressed by the finger through the non-skin-side coversheet 19. In addition, the length in the width direction W of the skin-side coversheet 18 covering the skin side T1 of the test member 60 may be shorter than the finger width. As shown in FIG. 15(C), when the outer surface of the worn article S is pressed against the wearer, the skin-side coversheet 18 is disposed in a planar shape, and the test member 60 is also likely to be disposed along the planar shape to face the excretion opening. In addition, according to a configuration in which the length in the width direction W of the skin-side coversheet 18 is longer than the test member 60, the test member 60 can be pressed so as to face the excretion opening over the entire width direction W of the test member 60.

[0178] The inspection member 60 may be disposed across the center of the width direction W of the absorbent article 1. When a wearer places his / her finger against the inspection member 60 and presses it, the wearer is aware that the finger is placed against the excretion opening V and can easily place the finger so that the finger touches the center of the width direction W of the absorbent article 1. Therefore, the inspection member disposed across the center of the width direction W of the absorbent article 1 can be pressed toward the wearer by a pressing action. The inspection member 60 may have a vertically elongated shape in which the length of the inspection member 60 in the front-rear direction L is longer than the length of the width direction W. When the wearer places his / her finger against the inspection member 60 and presses it along the front-rear direction L of the absorbent article 1, the finger can be easily placed along the inspection member 60, and a certain range of the inspection member 60 extending in the front-rear direction L can be pressed with the finger, and the inspection member 60 can be placed closer to the body.

[0179] The top sheet 11 is made of a sheet having fibers, and the average inter-fiber distance of the top sheet 11 may be longer than the average diameter of a woman's pubic hair. The average diameter of pubic hair may be the average diameter of an adult woman, specifically, 90 μm to 120 μm. According to this configuration, since the average inter-fiber distance of the top sheet 11 is longer than the average diameter of a woman's pubic hair, when the top sheet 11 comes into contact with the wearer's skin, the pubic hair is more likely to enter the top sheet 11. Vaginal discharge adhering to the pubic hair is more likely to transfer to the top sheet 11. Preferably, the average inter-fiber distance on the skin side of the top sheet 11 may be longer than the average diameter of a woman's pubic hair. When the skin side of the absorbent article is pressed against the wearer's side, the pubic hair is more likely to enter the top sheet.

[0180] The contact portion 64 of the test member 60 and the top sheet 11 are formed by sheets having fibers, and the average inter-fiber distance of the top sheet 11 may be longer than the average inter-fiber distance of the contact portion 64. Excrement discharged into the absorbent article 1 is guided to the contact portion 64 via the top sheet 11. The excrement in the top sheet 11 is more likely to migrate to the contact portion 64, which has a narrow average inter-fiber distance, and even a small amount of vaginal discharge is more likely to reach the test member 60. The fiber density of the top sheet 11 may be higher than the fiber density of the contact portion 64. Excrement is more likely to migrate from the top sheet 11, which has a relatively high fiber density, to the contact portion 64, which has a relatively low fiber density, and even a small amount of vaginal discharge is more likely to reach the test member 60.

[0181] The contact portion 64 may contact the top sheet 11 in the non-compressed region. It is sufficient that at least a portion of the contact portion 64 contacts the top sheet 11 in the non-compressed region, and a portion of the contact portion may contact the top sheet 11 in the compressed region. The top sheet 11 in the non-compressed region does not have unevenness due to the compressed portion 35 compared to the top sheet 11 in the compressed region, and is more likely to contact the contact portion 64 on its entire surface. Excrement in the top sheet 11 will more easily migrate to the contact portion 64, making it easier for the testing member 60 to reach even a small amount of vaginal discharge.

[0182] The average thickness of the top sheet 11 in the region covering the contact portion 64 may be thicker than the average thickness of the top sheet 11 in the region covering the transfer portion 66. The top sheet 11 covering the contact portion 64 has a large average thickness, and can ensure a large volume of space for holding excrement. Therefore, the top sheet 11 in the region covering the contact portion 64 draws in a large amount of excrement, making it easier for the excrement to transfer from the top sheet 11 to the contact portion 64.

[0183] The non-skin side cover sheet 19 is a liquid-impermeable sheet and may cover the entire width direction W of the test member 60. The outer edges on both sides of the non-skin side cover sheet 19 may extend outward in the width direction W beyond the outer edges of the test member 60. According to this configuration, by covering the non-skin side T2 of the test member 60 over the entire width direction W of the test member 60 with a liquid-impermeable sheet, excrement that has reached the test member 60 is prevented from penetrating through the test member 60 to the non-skin side T2, and the excrement can move more easily within the test member 60.

[0184] The contact angle of the artificial body fluid with respect to the top sheet 11 may be smaller than the contact angle of the artificial body fluid with respect to the wearer's skin. Here, the "contact angle" is used to evaluate wettability, and the smaller the contact angle, the easier it is to wet and absorb the artificial body fluid. The above-mentioned artificial body fluid is used to evaluate the contact angle. As a result of the applicant's intensive research, it was found that the PET plate exhibits hydrophilicity very similar to that of the skin, so the contact angle with respect to the skin is the contact angle with respect to the PET plate. The contact angle is measured as follows. (1) In a thermostatic room at 25°C, an automatic contact angle meter CA-V type (manufactured by Kyowa Interface Science Co., Ltd.), a plate made of polyethylene terephthalate (hereinafter referred to as "PET plate"), and a top sheet are prepared. The PET plate is PET-6010 (manufactured by Takiron C.I. Co., Ltd., size: 41.5 x 80.0 x 1.0 mm). (2) Using a syringe, drop approximately 2 μL of the wipeability improver onto each of the PET plate and the top sheet, and 5 seconds after dropping, measure the contact angle of the wipeability improver using the θ / 2 method with a CA-V automatic contact angle meter. (3) The measurement is carried out 10 times at different locations on each of the PET plate and the top sheet, and the average value is used as the contact angle.

[0185] The test member 60 of this embodiment is a test member using immunochromatography to detect luteinizing hormone from vaginal discharge. The test member for immunochromatography forms a complex with an excrement component, which is a component contained in the excrement, through an antigen-antibody reaction, and the complex is colored by an indicator at the destination where it moves, indicating the test result. Therefore, a larger amount of excrement is required than for a test using a test paper. However, according to the present invention, even a small amount of vaginal discharge can be guided to the test member, and a test using immunochromatography can be performed.

[0186] The absorbent article 1 may be folded around the crease before use, and at least the indicator 62 of the test member 60 may be disposed in an area that does not overlap with the crease. The crease does not form in the indicator 62, and the visibility of the indicator 62 can be ensured. Also, preferably, the test member 60 may be disposed in an area that does not overlap with the crease. The crease does not form in the test member 60, and the test member 60 can be easily disposed along the body, and even a small amount of vaginal discharge can be easily guided to the test member. The fastening portion 25 may be disposed in an area that overlaps with the test member 60 in the thickness direction. The area where the test member 60 is disposed is fastened to the worn article via the fastening portion 25, and the test member 60 can be pressed toward the wearer via the worn article, and even a small amount of vaginal discharge can be easily guided to the test member.

[0187] It is preferable that the absorbent article is configured so that the transfer of excrement is not hindered by adhesive. As shown in FIG. 8, the components constituting the absorbent article are joined to each other by adhesive regions to which adhesive is applied. More specifically, a first adhesive region 551 is provided between the top sheet 11 and the skin-side cover sheet 18. No adhesive region is provided between the skin-side cover sheet 18 and the test member 60. A second adhesive region 552 is provided between the test member 60 and the non-skin-side cover sheet 19. No adhesive region is provided between the non-skin-side cover sheet 19 and the auxiliary sheet 15. A third adhesive region 553 is provided between the auxiliary sheet 15 and the absorbent core 31. A fourth adhesive region 554 is provided between the absorbent core 31 and the back sheet 21. As shown in FIG. 11, a non-adhesive region where no adhesive is arranged is provided on the surfaces where the moving section 66, the display section 62, the contact section 64, and the absorbent section 67 are in contact with each other. More specifically, a non-adhesive region is provided on the surface where the moving section 66 and the display section 62 contact, a non-adhesive region is provided on the surface where the moving section 66 and the contact section 64 contact, and a non-adhesive region is provided on the surface where the moving section 66 and the absorption section 67 contact. According to this embodiment, since no adhesive is provided on the surfaces where the components contact each other, the presence of adhesive is prevented from interfering with the movement of excrement components, and the test can be performed accurately and precisely.

[0188] Next, a preferred manufacturing method of the test member thus configured will be described. Note that a part of the steps of the manufacturing method will be described below, and steps other than the steps can be adopted from steps in a known manufacturing method. The manufacturing method includes at least a laminating step of arranging members constituting the moving section, the display section, and the absorbing section between a continuous non-skin-side test sheet 69 and a continuous skin-side test sheet 68, and a cutting step of cutting the laminate laminated by the laminating step along the edge of the test member in the second direction. The cutting step presses the laminate in the thickness direction T to cut the laminate. According to the manufacturing method, in the process of cutting the laminate, the edge of the test member in the second direction is pressed, and the side region RS, which is the end of the test member in the second direction, is pressed more than the center region RC, and the thickness of the side region RS becomes thinner than the thickness of the center region RC. Also, the side region RS is pressed more than the center region RC, and the density of the side region RS becomes higher than the density of the center region RC. Preferably, in the lamination step, no adhesive is placed on the surface where the contact portion 64 and the moving portion 66 come into contact, the surface where the components constituting the moving portion (the conjugated pad 66X and the membrane 66Y) come into contact with each other, the surface where the moving portion 66 comes into contact with the display portion 62, and the surface where the moving portion 66 comes into contact with the absorbing portion 67, and in the cutting step, the laminate is melted and the edge of the test member in the second direction is joined by melting. The surface where the contact portion 64 and the moving portion 66 come into contact with each other, the surface where the components constituting the moving portion (the conjugated pad 66X and the membrane 66Y) come into contact with each other, the surface where the moving portion 66 comes into contact with the display portion 62, and the surface where the moving portion 66 comes into contact with the absorbing portion 67 are the parts through which excrement components move, and according to this configuration, the adhesive can be prevented from impeding the passage of excrement. In addition, by joining the edge of the test member in the second direction by melting, the components can be joined without using an adhesive, and the adhesive can be prevented from impeding the passage of excrement. In the lamination process, the process of forming the moving section, display section, and absorbent section between the test non-skin side continuous sheet and the test skin side continuous sheet may involve arranging the moving section, display section, and absorbent section in a state cut to the dimensions of the test member, or arranging a continuous body in which the members constituting the moving section, display section, and absorbent section are continuous.In a configuration in which the laminate has the non-skin side test continuous sheet, the skin side test continuous sheet, and another continuous body, the continuous body may also be cut in the cutting step. According to the manufacturing method, in the cutting step, the continuous body can be cut and joined together with the non-skin side test continuous sheet and the skin side test continuous sheet.

[0189] (4) Container according to the embodiment Next, a container 100 according to an embodiment (hereinafter, container) will be described. In the following description, the same reference numerals will be used to designate components common to the above-described embodiment, and description thereof will be omitted. FIG. 16 is a front view of the container 100 according to the first embodiment, and FIG. 17 is a rear view of the container 100 according to the first embodiment. The container 100 has an absorbent article 1 and a container body 101 that contains the absorbent article. The container body 101 may be a package 100X (see FIG. 18) that individually packages the absorbent article 1, or may contain a plurality of absorbent articles or packages. The container 100 of the first embodiment contains a plurality of packages 100X in which the absorbent article is individually packaged by a package sheet. FIG. 18 shows a container 100X of the second embodiment, in which the package that individually packages the absorbent article 1 constitutes the container, and the package sheet constitutes the container body. Fig. 18(A) is a front view of the housing body 100X, and Fig. 18(B) is a front and rear view of the housing body 100X. The housing body 101 may be made of paper or a resin film. Preferably, the housing body (packaging sheet) of the housing body 100X may be made of an aluminum laminate material (PET12 / AL6 / CPP30) to suppress deterioration of the inspection members before use.

[0190] The storage body 101 has a design part 110 that can be seen from the outer surface of the storage body. The design part 110 may be formed by printing, or may be formed by a sticker attached to a base material (e.g., a resin film) that constitutes the storage body 101. The design part 110 may have an article design part 120 that shows the absorbent article. The article design part 120 may show at least a part of the absorbent article, and may show the entire absorbent article 1, or may show a part of the absorbent article 1, such as a part including the inspection member 60. The article design part 120 may have a display design part 130 that shows the display part 62 of the inspection member 60, and a color design part 140 that shows a colored area. The wearer visually checks the article design part 120 attached to the outer surface of the storage body when using the absorbent article 1, purchasing it, etc. The article design part 120 has a display design part 130 and a color design part 140. Therefore, the wearer can understand the function of the absorbent article 1 (having the inspection member 60) and the state of the inspection member 60 (covered by the colored region R20) before use. Since the wearer can understand the state of the inspection member 60 of the absorbent article 1 before use, when visually checking the actual absorbent article 1, the wearer can be prevented from mistakenly thinking that a reaction has occurred before use.

[0191] The display design section 130 may have a front display design section 131 showing the display section before coloring, and a rear display design section 132 showing the display section after coloring. The rear display design section 132 may show at least the first display section 62A after coloring, and preferably show both the first display section 62A after coloring and the second display section 62B after coloring. With this configuration, the state of the display section before coloring and the state of the display section after coloring can be shown to the wearer, and the wearer can understand the function and usage of the inspection member, and can use the absorbent article with confidence.

[0192] The rear display design section 130 may have a first rear display design section showing a state where an appropriate color reaction has been shown, and a second rear display design section showing a display section after inappropriate color reaction. The first rear display design section shows a state where an appropriate color reaction has been shown, and specifically, may show a state where both the first display section and the second display section have been colored. The second rear display design section shows a state where an inappropriate color reaction has been shown, and specifically, examples of such states include a state where the first display section has been colored and the second display section has not been colored, a state where the entire display section including the first display section and the second display section has been colored, and a state where the center of the display section in the width direction has been colored and the side portions of the display section in the width direction have not been colored. According to this configuration, the article design section can show the wearer an appropriate color reaction state and an inappropriate color reaction state, and the wearer can understand the function and usage method of the inspection member, and can use the absorbent article with confidence.

[0193] The design section 110 of the storage body 101 may have an inspection explanation section 150 including at least one of a method for using the inspection member, a function of the inspection member, and a method for determining the inspection result. The inspection explanation section may be in the form of text or an illustration. By having the inspection explanation section, the wearer can better understand the function and method of use of the inspection member, and can use the absorbent article with peace of mind.

[0194] The design section 110 may have a pressing indicator 160. The pressing indicator 160 indicates a state in which the outer surface of the worn article S is pressed toward the wearer to bring the skin side of the top sheet 11 of the absorbent article 1 into contact with the skin side of the wearer. As shown in Figs. 17 and 18, the pressing indicator 160 of this embodiment is an illustration attached to the back of the container 100 and the back of the container 100X, and indicates a state in which the wearer places his / her finger on the outside of the garment and presses the outer surface of the worn article toward the wearer from the garment side. By visually checking the pressing indicator 160, the wearer can grasp the state in which the outer surface of the worn article S is pressed toward the wearer so that the skin side of the top sheet 11 of the absorbent article 1 comes into contact with the skin side of the wearer, and this pressing state can be easily performed. By performing the pressing state, the wearer can easily guide the vaginal discharge to the test member 60, and an appropriate test result can be obtained based on the vaginal discharge.

[0195] The design section 110 may include an action explanation section 161 including at least one of an explanation of the pressing action of pressing the outer surface of the wearable article towards the wearer and an explanation encouraging the wearer to perform the pressing action, in combination with the pressing display section 160. The action explanation section 161 allows the wearer to easily understand the pressing action, and by the wearer performing the pressing state, it is easy to guide the vaginal discharge to the testing member, and appropriate test results can be obtained based on the vaginal discharge.

[0196] (5) Sheets for absorbent articles The present invention may be a sheet for absorbent articles suitable for use in absorbent articles. The sheet for absorbent articles allows 6% or more of an artificial body fluid having a predetermined viscosity (viscosity of 15 to 30 Pa·s at 23° C.) in contact with the skin-side surface of the sheet for absorbent articles to pass through to the non-skin-side surface of the sheet for absorbent articles. The sheet for absorbent articles may adopt the configuration of the top sheet in the above-mentioned absorbent articles. The sheet for absorbent articles can be particularly suitable for use in absorbent articles having a test member. According to the sheet for absorbent articles of this embodiment, the artificial body fluid having a predetermined viscosity in contact with the skin-side surface can be allowed to pass through to the non-skin-side surface of the sheet at a high ratio of 6% or more. Therefore, even vaginal discharge, which has a higher viscosity than urine and menstrual blood, can pass through the sheet. In particular, by using the sheet for absorbent articles on the skin side of the test member, a high ratio of vaginal discharge can be allowed to pass through the sheet and be guided to the test member side, making it possible to appropriately test the wearer's health condition from the vaginal discharge.

[0197] The absorbent article sheet and the top sheet 11 constituting the absorbent article of the above embodiment preferably do not have water repellency. More specifically, the absorbent article sheet and the top sheet 11 may not be subjected to a water repellency treatment. The water repellency treatment method is not particularly limited, and a general method can be widely adopted. Specifically, a method using a water repellency treatment agent such as silicone oil, fluororesin, methyl hydrogen polysiloxane, or an oil agent containing these components is exemplified. The absorbent article sheet and the top sheet 11 may be subjected to a hydrophilic treatment. The hydrophilic treatment may include, for example, a hydrophilic oil agent. The sheet is not subjected to a water repellency treatment, so that it is easier to draw in body fluids, and the sheet is subjected to a hydrophilic treatment, so that it is easier to draw in body fluids.

[0198] Examples of suitable configurations for the top sheet 11 include an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, and a spunlace nonwoven fabric. The top sheet 11 may also have openings formed therethrough in the thickness direction. In a permeation test described below, the top sheet 11 may allow 6% or more of an artificial body fluid to permeate, preferably 10% or more, and more preferably 14% or more. A more suitable nonwoven fabric in this embodiment has a thickness of 0.1 mm to 0.2 mm and a fiber basis weight of 8 g / m. 2 More than 12g / m 2 The following is an example of a spunbond nonwoven fabric made of polypropylene fibers.

[0199] Next, the permeation test of the artificial body fluid will be described with reference to FIG. 19. FIG. 19 shows a schematic diagram of a test device for the permeation test. The test device includes a cylindrical jig 401 on which a top sheet (when measuring an absorbent article sheet, the absorbent article sheet, the same below) is placed, a digital force gauge (manufactured by SHIMPO (Nidec-Shimpo)) 402, a force gauge stand (manufactured by SHIMPO (Nidec-Shimpo)) (not shown) for supporting the digital force gauge, a flat plate (acrylic plate) 404 attached to a tip 403 of the digital force gauge 402, and an artificial leather (PBZ13001 by IDEATEX JAPAN Co., Ltd.) 405 attached to the surface of the flat plate 404 on the side of the top sheet 11. The test device is set up in advance. Specifically, after fixing a digital force gauge 402 to a force gauge stand, an acrylic plate (30 mm x 30 mm) 404 is fixed to the tip 403 of the digital force gauge 402, and further an artificial leather (30 mm x 30 mm) 405 is fixed on the acrylic plate. In addition, a top sheet 11 for a permeation test is prepared. The top sheet 11 is peeled off from the absorbent article, and only the top sheet 11 is taken out. At this time, if the top sheet cannot be peeled off due to the adhesive, the top sheet is cooled (for example, sprayed with cold spray) and the top sheet 11 is taken out. The dimensions of the top sheet are the dimensions on the cylindrical jig (greater than or equal to the dimensions of the cylindrical jig).

[0200] In the permeation test, the top sheet 11 is placed on a cylindrical jig 401 so that the skin side of the top sheet 11 faces up, and the top sheet 11 is fixed on the jig. For example, both ends of the top sheet 11 are fixed to the jig with cellophane tape. Next, 0.5 mg of the artificial body fluid is dropped on the skin side of the top sheet 11. FIG. 19(A) shows a state in which the artificial body fluid 410 is dropped on the top sheet 11 placed on the jig. Next, the digital force gauge 402 is lowered at 100 mm / min, and the descent of the digital force gauge is stopped under the condition that the digital force gauge in contact with the top sheet 11 indicates a numerical value of 1.60 to 1.70 kPa. FIG. 19(B) shows a state in which the descent of the digital force gauge is stopped. The artificial body fluid placed on the non-skin side surface of the top sheet 11 is the artificial body fluid that has permeated the top sheet 11, and the artificial body fluid is taken using a medicine spoon, and the weight of the artificial body fluid is measured. The permeability of the top sheet 11 to the artificial body fluid can be calculated by dividing the weight of the artificial body fluid on the non-skin side of the top sheet 11 by the weight of the artificial body fluid dropped on the skin side of the top sheet 11. The permeability test is carried out five times using five samples, and the average value is used.

[0201] 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 defined by the description of the claims. Therefore, the description in this specification is intended to be illustrative and does not have any limiting meaning on the present invention. [Explanation of symbols]

[0202] 1: Absorbent articles 11: Top sheet 15: Auxiliary seat 18: Skin-side cover sheet (second skin-side sheet) 19: Non-skin side cover sheet (second non-skin side sheet) 21: Back seat 31: Absorption core 35: Compression section 50: Resin film (liquid-impermeable sheet) 60: Inspection material 62:Display section 62A: 1st display section 62B: 2nd display section 64: Contact part 64Z: Sample Pad 66: Moving part 66X: Conjugated Pad 66Y:Membrane 67: Absorption section 68: Test skin side sheet (first skin side sheet) 69: Test non-skin side sheet (first non-skin side sheet) 71: First hydrophobic part 72: Second hydrophobic part 73: Third hydrophobic part 100: Containment unit 101: Storage unit 110: Design Department 120: Product Design Department 130: Display Design Department 131: Front display design department 132: Rear display design department 140: Coloring Design Department 160: Press display unit 300:Liquid permeation adjustment section L: Front and back direction RC: Center region RS: Side area R20: Colored area R21: 1st colored area R22: 2nd colored area R25: High transmission area RC1: Width center area HP:Hollow part S1: Anterior area S2: Posterior area S3: Inseam area S5: Excretion opening facing area T: Thickness direction T1: Skin side T2: Non-skin side W: Width direction

Claims

1. An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet, A liquid-impermeable sheet is placed on the non-skin side of the top sheet and on the skin side of the non-skin side of the absorbent core. The liquid-impermeable sheet is visible from the skin side of the absorbent article, but not visible from the non-skin side of the absorbent article, in the context of an absorbent article.

2. An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the top sheet and the back sheet, A liquid-impermeable sheet is placed on the non-skin side of the top sheet and on the skin side of the non-skin side of the absorbent core. In the region on the non-skin side of the aforementioned liquid-impermeable sheet that overlaps with the liquid-impermeable sheet in the thickness direction, an inspection member for examining the wearer's health condition is placed. The inspection member has a display unit that changes color based on the components of the excrement, which are components contained in the excrement. The liquid-impermeable sheet has a skin-side sheet that covers the skin-side of the display portion. The liquid-impermeable sheet is an absorbent article provided between the top sheet and the absorbent core.

3. The skin-facing sheet comprises a first skin-facing sheet and a second skin-facing sheet positioned closer to the skin than the first skin-facing sheet. The second skin-side sheet covers the skin side of the first skin-side sheet. The absorbent article according to claim 2, wherein in the width direction of the absorbent article, the outer edges on both sides of the second skin-facing sheet are located further outward than the outer edges of the first skin-facing sheet.

4. The absorbent article according to claim 2 or 3, wherein the liquid-impermeable sheet has a non-skin side sheet that covers the non-skin side of the display portion.

5. The non-skin side sheet comprises a first non-skin side sheet and a second non-skin side sheet positioned closer to the skin than the first non-skin side sheet. The second non-skin side sheet covers the non-skin side of the first non-skin side sheet. The absorbent article according to claim 4, wherein in the width direction of the absorbent article, the outer edges on both sides of the second non-skin sheet are located further outward than the outer edges of the first non-skin sheet.

6. The absorbent article according to any one of claims 1 to 3, wherein, in a plan view of the absorbent article, the rigidity of the region of the absorbent article where the liquid-impermeable sheet is arranged is higher than the rigidity of the region of the absorbent article surrounding the liquid-impermeable sheet.

7. It has an auxiliary sheet disposed between the top sheet and the absorption core, The absorbent article according to any one of claims 1 to 3, wherein at least a portion of the liquid-impermeable sheet is provided between the top sheet and the auxiliary sheet.

8. The absorbent article according to any one of claims 1 to 3, wherein the liquid-impermeable sheet straddles the center of the absorbent core in the width direction.

9. The absorbent article according to any one of claims 1 to 3, wherein the liquid-impermeable sheet extends in the front-to-back direction.

10. The absorbent article according to claim 9, wherein a plurality of the liquid-impermeable sheets are provided at intervals in the width direction.

11. The absorbent article according to any one of claims 1 to 3, wherein the liquid-impermeable sheets are arranged in multiples, extending in the width direction and spaced apart in the front-to-back direction.

12. The absorbent article according to claim 11, wherein the length of the liquid-impermeable sheet in the width direction is 50% or less of the length of the absorbent core in the width direction.

13. The absorbent article according to any one of claims 1 to 3, wherein the liquid-impermeable sheet is provided in an area facing the wearer's excretory opening.

14. The absorbent article according to any one of claims 1 to 3, wherein the liquid-impermeable sheet is provided so as not to straddle the center in the front-to-back direction.

15. The absorbent article according to any one of Claims 2 to 5, wherein the inspection member is visible from the skin side of the absorbent article and not visible from the non-skin side of the absorbent article in the state before the display portion develops color.

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