Absorbent article

Abstract

The utility model provides an absorptive article which inhibits deterioration of wearing feeling when absorbing body fluid, ensures swelling space of high-absorptive polymer and can effectively utilize absorption capacity. An absorbent article (1) is provided with an absorbent body (40) disposed at least in a crotch region. The absorbent body has an absorbent sheet (45) that covers the skin-side and non-skin-side of the highly absorbent polymer with a sheet. The absorbent sheet has a first absorbent sheet (451) and a second absorbent sheet (452) disposed closer to the skin side than the first absorbent sheet. The first absorbent sheet has a first compressed part (471). The second absorbent sheet has a second compressed section (472). A plurality of the first compression parts and the second compression parts are arranged at intervals in the front-back direction and the width direction in a plan view of the absorption sheet. At least the crotch region is provided with a non-overlapping region (NR) in which the first compressed section and the second compressed section do not overlap in the thickness direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to an absorbent article having an absorbent sheet covering a skin side and a non-skin side of a high-absorbency polymer in a thickness direction with a sheet. BACKGROUND

[0002] An absorbent article is disclosed in Patent Literature 1, which has an absorbent sheet covering a skin side and a non-skin side of a high-absorbency polymer in a thickness direction with a sheet. The absorbent sheet sandwiches the high-absorbency polymer with a plurality of sheets, and the sheets are joined to each other with a seal portion. The absorbent sheet is divided into a plurality of regions by the seal portion, and the high-absorbency polymer is disposed in each of the divided regions. By providing the seal portion, each of the regions where the water-absorbent resin is disposed is independently present.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Publication No. 2004-186273 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] However, the above-described Patent Literature 1 has the following problems.

[0008] The high-absorbency polymer is disposed in the region divided by the seal portion (a region where the seal portion is not disposed). The region divided by the seal portion swells due to swelling of the high-absorbency polymer when absorbing body fluid, and its thickness becomes thick, and its rigidity increases along with the absorption amount. On the other hand, the region where the seal portion is disposed is not disposed with the high-absorbency polymer. The region where the seal portion is disposed is difficult to swell the high-absorbency polymer when absorbing body fluid, and is difficult to change its thickness and rigidity. In addition, the region where the seal portion is disposed does not open the joining of the sheets to each other by swelling of the high-absorbency polymer. Therefore, when the high-absorbency polymer swells, the region divided by the seal portion is difficult to bend, and the followability to the body deteriorates, and the wearing feeling tends to decrease. In addition, in the region where the regions divided by the seal portion overlap, even if the high-absorbency polymers disposed respectively are intended to swell, since the thickness of each region overlapping in the thickness direction becomes large, sometimes the space for swelling cannot be ensured, the high-absorbency polymer cannot absorb body fluid, and the absorption capacity cannot be effectively utilized.

[0009] The utility model is completed in view of such problems, and aims at providing an absorbent article which suppresses deterioration of the wearing feeling when absorbing body fluid, and ensures a space for swelling of the high-absorbency polymer, and thus can effectively utilize the absorption capacity.

[0010] SOLUTION TO THE PROBLEM

[0011] An absorbent article of one aspect includes: a front-rear direction, a width direction, and a thickness direction orthogonal to each other; a crotch region disposed in a crotch of a wearer, a front region located at a position more forward than the crotch region, and a rear region located at a position more rearward than the crotch region; and an absorbent body disposed at least in the crotch region. The absorbent body has an absorbent sheet covering a skin side and a non-skin side of a superabsorbent polymer in the thickness direction. The absorbent sheet has a first absorbent sheet and a second absorbent sheet disposed at a position more on the skin side than the first absorbent sheet. The first absorbent sheet has a first compressed portion in which the sheet covering the skin side and the non-skin side of the superabsorbent polymer is compressed toward the inside from the outer surface in the thickness direction of the first absorbent sheet in a direction in which the sheet faces each other. The second absorbent sheet has a second compressed portion in which the sheet covering the skin side and the non-skin side of the superabsorbent polymer is compressed toward the inside from the outer surface in the thickness direction of the second absorbent sheet in a direction in which the sheet faces each other. The first compressed portion and the second compressed portion are disposed at a plurality of intervals in the front-rear direction and the width direction when viewed from the top of the absorbent sheet. A non-overlapping region in which the first compressed portion and the second compressed portion do not overlap in the thickness direction is provided at least in the crotch region.

[0012] Preferably, in the non-overlapping region, a first non-overlapping region in which a region in which the first compressed portion is provided in the first absorbent sheet and a region in which the second compressed portion is not provided in the second absorbent sheet overlap, a second non-overlapping region in which a region in which the first compressed portion is not provided in the first absorbent sheet and a region in which the second compressed portion is provided in the second absorbent sheet overlap, and a third non-overlapping region in which a region in which the first compressed portion is not provided in the first absorbent sheet and a region in which the second compressed portion is not provided in the second absorbent sheet overlap are provided.

[0013] Preferably, the shortest distance between the first compressed portions and the shortest distance between the second compressed portions when viewed from the top of the absorbent sheet are longer than the average of the diameters of the superabsorbent polymer in a state in which the superabsorbent polymer is dehydrated by a centrifugal separator after being immersed in physiological saline for 60 minutes and being drained for 15 minutes.

[0014] Preferably, the maximum size of the first compressed portions and the maximum size of the second compressed portions when viewed from the top of the absorbent sheet are longer than the average of the diameters of the superabsorbent polymer in a state in which the superabsorbent polymer is dehydrated by a centrifugal separator after being immersed in physiological saline for 60 minutes and being drained for 15 minutes.

[0015] Preferably, the absorbent article is formed with sheet joint portions that compress and join the first and second absorbent sheets in the thickness direction, are arranged at intervals in the front-rear direction and the width direction when the absorbent sheets are viewed from above, and have a maximum dimension that is larger than the maximum dimensions of the first and second compression portions when the absorbent sheets are viewed from above.

[0016] Preferably, the absorbent body has an absorbent core in which at least cellulose-based fibers are layered, and the outer side edges of the absorbent core are positioned inward of the outer side edges of the absorbent sheets in the width direction.

[0017] Preferably, the absorbent core is arranged across the center of the width direction of the absorbent article, and the first absorbent sheet is arranged at a position that is on the non-skin side of the absorbent core.

[0018] Preferably, the second absorbent sheet is arranged at a position that is on the skin side of the absorbent core.

[0019] Preferably, the outer side edges of the first and second absorbent sheets are offset in the width direction.

[0020] Preferably, cellulose-based fibers and the superabsorbent polymer are arranged simultaneously between the sheets of the absorbent sheets, and the cellulose-based fibers of the absorbent sheets have a smaller weight per unit area than the superabsorbent polymer of the absorbent sheets. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a plan view of the absorbent article of the embodiment as viewed from the skin side.

[0022] Figure 2 is a plan view of the absorbent article of the embodiment as viewed from the non-skin side.

[0023] Figure 3 is a cross-sectional view along the line A-A shown in Figure 1 .

[0024] Figure 4 is a cross-sectional view along the line B-B shown in Figure 1 .

[0025] Figure 5 is an enlarged view of the portion C shown in Figure 3 .

[0026] Figure 6 is a plan view of the absorbent body.

[0027] Figure 7 is a plan view of the absorbent sheet.

[0028] Figure 8 is a cross-sectional view schematically showing a wearing state of the absorbent article.

[0029] Figure 9 is Figure 3 is a schematic enlarged view of the D portion shown.

[0030] Figure 10 is a diagram showing a configuration pattern of the side sheet.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1: absorbent article; 5: wing; 11: skin-side sheet (top sheet); 20: non-skin-side sheet (side sheet); 21: first non-skin-side sheet (first side sheet); 211: first region; 212: second region; 22: second non-skin-side sheet (second side sheet); 23: third non-skin-side sheet (back sheet); 25: auxiliary sheet; 30: non-skin-side joint; 31: crotch joint; 32: front-rear joint; 35: skin-side joint; 40: absorbent body; 41: absorbent core; 44: superabsorbent polymer; 45: absorbent sheet (auxiliary absorbent layer); 46: sheet compression portion; 461: first sheet compression portion; 462: second sheet compression portion; 471: first compression portion; 472: second compression portion; 48: sheet; 60: fixed portion; 61: main body fixed portion; 611: first main body fixed portion; 612: second main body fixed portion; 81: main body compression portion; 811: outer side compression portion; 812: inner side compression portion; 82: compression constituting portion; 90: side sheet; 91: first side sheet; 92: second side sheet; 321: first front-rear joint; 322: second front-rear joint; 451: first absorbent sheet; 452: second absorbent sheet; 471: first compression portion; 472: second compression portion; L: front-rear direction; NR: non-overlapping region; R45: side region; R41: laminated region; R42: auxiliary region; R91: covered region; R92: protruding region; RC: central region; RS: outer side region; S: wearing article; S1: front side region; S2: rear side region; S3: crotch region; T: thickness direction; T1: skin side; T2: non-skin side; W: width direction. DETAILED DESCRIPTION

[0033] (1) Summary of Embodiments

[0034] According to the description and drawings of the present specification, at least the following matters are clarified.

[0035] The absorbent article of Mode 1 includes: a front-rear direction, a width direction, and a thickness direction orthogonal to each other; a crotch region disposed on a crotch of a wearer, a front region located at a position more forward than the crotch region, and a rear region located at a position more rearward than the crotch region; and an absorbent body disposed at least in the crotch region. The absorbent body has an absorbent sheet covering a skin side and a non-skin side of a superabsorbent polymer in the thickness direction. The absorbent sheet has a first absorbent sheet and a second absorbent sheet disposed at a position more on the skin side than the first absorbent sheet. The first absorbent sheet has a first compressed portion in which the sheet covering the skin side and the non-skin side of the superabsorbent polymer is compressed toward the inside from the outer surface in the thickness direction of the first absorbent sheet in a direction in which the surfaces face each other. The second absorbent sheet has a second compressed portion in which the sheet covering the skin side and the non-skin side of the superabsorbent polymer is compressed toward the inside from the outer surface in the thickness direction of the second absorbent sheet in a direction in which the surfaces face each other. The first compressed portion and the second compressed portion are disposed at a plurality of positions spaced apart in the front-rear direction and the width direction when viewed from above the absorbent sheet. A non-overlapping region in which the first compressed portion and the second compressed portion do not overlap in the thickness direction is provided at least in the crotch region.

[0036] According to the present mode, by providing the non-overlapping region, the condition in which the rigidity locally increases is suppressed, unintentional deformation from a portion having a higher rigidity is suppressed, and discomfort caused by the portion having a higher rigidity can be suppressed. Furthermore, the first compressed portion and the second compressed portion are disposed at a plurality of positions spaced apart in the front-rear direction and the width direction when viewed from above the absorbent sheet, and even in a case in which the first compressed portion and the second compressed portion overlap, the overlapping region is disposed spaced apart, unlike the conventional mode having a seal portion, and the region in which the superabsorbent polymer is disposed is not divided. Therefore, the condition in which the divided region in which the superabsorbent polymer swells is difficult to bend is less likely to occur, deterioration in followability is suppressed, and the wearing feeling can be improved. Furthermore, since at least one of the first compressed portion and the second compressed portion is not disposed in the thickness direction in the non-overlapping region, a space for swelling in the thickness direction is easily ensured, and the absorption capacity can be effectively used. Furthermore, since the first compressed portion and the second compressed portion are disposed spaced apart in the front-rear direction and the width direction, a portion in which the sheets are close to each other by the first compressed portion and the second compressed portion is not formed in a linear shape from one end to the other end of the absorbent sheet, and therefore the superabsorbent polymer is easily expanded in the entire range when viewed from above the absorbent sheet. Therefore, the superabsorbent polymer is configured to be able to ensure a space for swelling and effectively use the absorption capacity.

[0037] According to a preferred mode, the technical solution of Mode 2 can have the following features on the basis of the technical solution of Mode 1. The non-overlapping regions include a first non-overlapping region in which the region provided with the first compression portion in the first absorbent sheet and the region in which the second compression portion is not provided in the second absorbent sheet overlap, a second non-overlapping region in which the region in which the first compression portion is not provided in the first absorbent sheet and the region provided with the second compression portion in the second absorbent sheet overlap, and a third non-overlapping region in which the region in which the first compression portion is not provided in the first absorbent sheet and the region in which the second compression portion is not provided in the second absorbent sheet overlap. In the first non-overlapping region, the superabsorbent polymer of the second absorbent sheet is easily swollen and easily swells toward the skin side when absorbing body fluid, in the second non-overlapping region, the superabsorbent polymer of the first absorbent sheet is easily swollen and easily swells toward the non-skin side when absorbing body fluid. In the first non-overlapping region and the second non-overlapping region, the first absorbent sheet and the second absorbent sheet are easily swelled in opposite directions in the thickness direction, respectively, and each region does not interfere and is easily ensured to be a swollen region. The third non-overlapping region is easily swelled toward both the skin side and the non-skin side when absorbing body fluid, and is more easily ensured to have an absorption capacity. By providing the first non-overlapping region, the second non-overlapping region, and the third non-overlapping region, the superabsorbent polymer is more easily swollen, and the absorption capacity can be further effectively utilized.

[0038] According to a preferred mode, the technical solution of Mode 3 can have the following features on the basis of the technical solution of Mode 1 or Mode 2. The shortest distance between the first compression portions and the shortest distance between the second compression portions in plan view of the absorbent sheet are longer than the average value of the diameters of the superabsorbent polymer in a state in which the superabsorbent polymer is dehydrated by a centrifugal separator after being immersed in the physiological saline for 60 minutes and being drained for 15 minutes. According to the present mode, the regions between the first compression portions and the regions between the second compression portions are regions in which the superabsorbent polymer is easily swollen, because the regions are not pressed by the compression portions and the interstices between the fibers are large. Since the length in plan view of the easily swollen regions is longer than the average diameter of the superabsorbent polymer, the superabsorbent polymer is easily swollen, and the absorption capacity can be more effectively utilized.

[0039] According to a preferred mode, the technical solution of Mode 4 can have the following features on the basis of any one of the technical solutions of Modes 1 to 3. The maximum size of the first compression portion and the maximum size of the second compression portion in plan view of the absorbent sheet are smaller than the average value of the diameters of the superabsorbent polymer in a state of dehydration using a centrifugal separator after being immersed in the physiological saline for 60 minutes and subjected to 15 minutes of draining. According to the present mode, the maximum size of the first compression portion and the maximum size of the second compression portion are smaller than the average diameter of the superabsorbent polymer in a state of being water-retained, and the influence of the first compression portion and the second compression portion in a state of being water-retained is suppressed, and the superabsorbent polymer is easily expanded in the entire range in plan view of the absorbent sheet.

[0040] According to a preferred mode, the technical solution of Mode 5 can have the following features on the basis of any one of the technical solutions of Modes 1 to 4. A sheet joint portion is formed by compressing and joining the first absorbent sheet and the second absorbent sheet in the thickness direction, and is arranged at intervals in the front-rear direction and the width direction in plan view of the absorbent sheet. In plan view of the absorbent sheet, the maximum size of the sheet joint portion is larger than the maximum size of the first compression portion and the maximum size of the second compression portion. According to the present mode, since the maximum size of the sheet joint portion is relatively large, the joined state of the first absorbent sheet and the second absorbent sheet is easily maintained, misalignment of the absorbent sheets is suppressed, and a non-overlapping region can be ensured. Further, since the maximum size of the first compression portion and the maximum size of the second compression portion are relatively small, the influence of the first compression portion and the second compression portion in a state of being water-retained is suppressed, and the superabsorbent polymer is easily expanded in the entire range in plan view of the absorbent sheet.

[0041] According to a preferred mode, the technical solution of Mode 6 can have the following features on the basis of any one of the technical solutions of Modes 1 to 5. The absorbent body has an absorbent core in which at least a cellulose-based fiber is layered. In the width direction, the outer side edge of the absorbent core is located at a position that is more inward than the outer side edge of the absorbent sheet. According to the present mode, since the absorbent core does not overlap with the outer side portion of the absorbent sheet, the thickness of the outer side portion of the absorbent body can be thinned. Therefore, the outer side portion of the absorbent sheet is easily expanded when absorbing the body fluid, and the absorbent capacity of the absorbent sheet can be effectively utilized.

[0042] According to a preferred mode, the technical solution of Mode 7 can have the following features on the basis of the technical solution of Mode 6. The absorbent core is disposed across the center in the width direction of the absorbent article. The first absorbent sheet is disposed at a position closer to the non-skin side than the absorbent core. According to the present mode, the absorbent core is disposed across the center in the width direction of the absorbent article at a position closer to the skin side than the first absorbent sheet, and the body fluid discharged from the discharge port is easily absorbed. The first absorbent sheet is disposed at a position closer to the non-skin side than the absorbent core, and the body fluid guided to the absorbent core is further drawn toward the non-skin side, and the body fluid is easily held by the absorbent core even in the case of repeated discharge of the body fluid.

[0043] According to a preferred mode, the technical solution of Mode 8 can have the following features on the basis of the technical solution of Mode 6 or Mode 7. The second absorbent sheet is disposed at a position closer to the skin side than the absorbent core. According to the present mode, the second absorbent sheet disposed at a position closer to the skin side than the absorbent core swells when absorbing the body fluid, and thus re-wetting caused by movement of the temporarily absorbed body fluid toward the skin side can be suppressed. In addition, the body fluid spread in the planar direction is absorbed on the surface side of the absorbent article, and transmission leakage of the body fluid can be suppressed.

[0044] According to a preferred mode, the technical solution of Mode 9 can have the following features on the basis of the technical solution of any one of Modes 1 to 8. In the width direction, the outer edge of the first absorbent sheet and the outer edge of the second absorbent sheet are offset. According to the present mode, because of the outer edge of the first absorbent sheet and the outer edge of the second absorbent sheet, one absorbent sheet is disposed at the outer side portion of the absorbent sheet instead of two absorbent sheets. The outer side portion of the absorbent sheet is suppressed in thickness by disposing one absorbent sheet, and the rigidity can be reduced. The outer side portion of the absorbent sheet is easily bent, and this contributes to reduction of the feeling of discomfort, and the portion is easily expanded when absorbing the body fluid, and the absorption capacity can be effectively utilized.

[0045] According to a preferred mode, the technical solution of Mode 10 can have the following features on the basis of the technical solution of any one of Modes 1 to 9. The cellulose-based fibers and the superabsorbent polymer are simultaneously arranged between the sheets of the absorbent sheet. The unit area weight of the cellulose-based fibers of the absorbent sheet is less than the unit area weight of the superabsorbent polymer of the absorbent sheet. According to the present mode, the condition that the superabsorbent polymer unintentionally flows due to the presence of the cellulose-based fibers is suppressed, and the superabsorbent polymer can be arranged in the entire range in the plan view of the absorbent sheet. The unit area weight of the cellulose-based fibers of the absorbent sheet can be less than the unit area weight of the superabsorbent polymer of the absorbent sheet. Since the unit area weight of the cellulose-based fibers is relatively low and the unit area weight of the superabsorbent polymer is relatively high, the absorbent capacity can be ensured, and the thickness of the entire absorbent sheet is suppressed. By suppressing the thickness of the entire absorbent sheet to improve the follow-up of the absorbent sheet to the body, the discomfort in wearing can be suppressed.

[0046] (2) Outline structure of the absorbent article of the embodiment

[0047] Hereinafter, the absorbent article 1 of the embodiment will be described with reference to the drawings. In addition, in the description of the drawings below, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic views, and the proportions of the dimensions and the like are different from reality. Thus, the specific dimensions and the like should be judged with reference to the description below. Furthermore, the drawings can also include parts having different dimensions and proportions from each other. The absorbent article 1 can be an absorbent article such as a sanitary napkin, a sanitary pad, an incontinence pad, and a feces pad. The absorbent article 1 is an article used by being worn on an undergarment or the like. The absorbent article 1 of the embodiment is a daily-use sanitary napkin, and is a longitudinal shape.

[0048] Figure 1 is a plan view of the absorbent article 1 as viewed from the skin side T1. Figure 2 is a plan view of the absorbent article 1 as viewed from the non-skin side T2. Figure 3 is a cross-sectional view along the line A-A shown in Figure 1

[0049] Figure 4 is a cross-sectional view along the line B-B shown in Figure 1 Figure 5 is a Figure 3 ​​An enlarged view of the C portion is shown. 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 the side opposite to the wearer's skin during use. The absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T that are orthogonal to one another. In the front-rear direction L of the absorbent article 1, the side that comes into contact with the wearer's lower abdomen is referred to as the "front side", and the side that comes into contact with the wearer's buttocks is referred to as the "rear side".

[0050] The absorbent article 1 has a front side region S1, a rear side region S2, and a crotch region S3. The crotch region S3 is a region that is disposed opposite to the wearer's discharge port, such as the vaginal opening. It is a region that is disposed in the crotch of the wearer's garment and between the wearer's legs when the absorbent article 1 is worn in the wearer's garment. The front side region S1 is located at a position that is more forward than the crotch region S3. The front end edge of the front side region S1 defines the front end edge of the absorbent article 1. The rear side region S2 is located at a position that is more rearward than the crotch region S3. The rear end edge of the rear side region S2 defines the rear end edge of the absorbent article 1. The crotch region S3 can be a region that is centrally located among regions that are three-equal parts in the front-rear direction L of the absorbent article 1. Furthermore, in the absorbent article 1 having flaps, the crotch region S3 can be a region in which the flaps 5 are provided.

[0051] As shown in Figure 6 The absorbent article 1 has a crotch central region S33 that is centrally located among regions that are three-equal parts in the front-rear direction L of the crotch region S3, a crotch front region S31 that is located on the front side among the three-equal parts, and a crotch rear region S32 that is located on the rear side among the three-equal parts. The absorbent article 1 has a front outer region S11 that is located on the front side among regions that are two-equal parts in the front-rear direction L of the front side region S1, and a front inner region S12 that is located on the rear side among the two-equal parts. The absorbent article 1 has a rear outer region S21 that is located on the rear side among regions that are two-equal parts in the front-rear direction L of the rear side region S2, and a rear inner region S22 that is located on the front side among the two-equal parts.

[0052] Further, the outer side portion of the present application is a portion occupying a certain range in the width direction W including an outer edge in the width direction W, and the outer edge is an edge on the outer side in the width direction W. Further, the outer edge of the constituent member occupying a certain range in the front-rear direction L is an edge connecting points on the outer side in the width direction W in the constituent member as a whole. Further, the inner side portion of the present application is a portion occupying a certain range in the width direction W including an inner edge in the width direction W, and the inner edge is an edge on the inner side in the width direction W. Further, the inner edge of the constituent member occupying a certain range in the front-rear direction L is an edge connecting points on the inner side in the width direction W in the constituent member as a whole. Further, the front end portion and the rear end portion of the present application are portions occupying a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer end portion includes the front end portion and the rear end portion, and the outer end edge includes the front end edge and the rear end edge. Further, the inner side edge is an edge including the inner edge and extending along the front-rear direction L. The outer side edge is an edge including the outer edge and extending along the front-rear direction L. Further, in the present specification, the phrase "along the front-rear direction L" means a direction having an angle of less than 45° with respect to the front-rear direction L, and the phrase "along the width direction W" means a direction having an angle of less than 45° with respect to the width direction W.

[0053] The absorbent article 1 can have at least one of the wing 5 disposed in the crotch region S3 and the hip panel (not shown) disposed in the rear region S2. The absorbent article 1 of the present embodiment has the wing 5 and does not have the hip panel. The wing 5 protrudes outward in the width direction W in the crotch region S3 and is folded back toward the non-skin side T2 of the wearing article S (refer to FIG. 1) in wear. A wing fixing portion 62 for fixing the wing 5 to the wearing article can be provided on the surface of the non-skin side T2 of the wing 5. The hip panel protrudes outward in the width direction W in the rear region S2 and is disposed along the surface of the skin side of the wearing article in wear. Figure 8 ) The wing 5 protrudes outward in the width direction W in the crotch region S3 and is folded back toward the non-skin side T2 of the wearing article S (refer to FIG. 1) in wear. A wing fixing portion 62 for fixing the wing 5 to the wearing article can be provided on the surface of the non-skin side T2 of the wing 5. The hip panel protrudes outward in the width direction W in the rear region S2 and is disposed along the surface of the skin side of the wearing article in wear.

[0054] The absorbent article 1 can have at least the absorbent body 40, the skin-side panel 11, and the non-skin-side panel 20. The absorbent body 40 can be disposed at least in the crotch region S3 and can also be disposed in the front region S1 and the rear region S2. The absorbent body 40 of the present embodiment is disposed in the front region S1, the rear region S2, and the crotch region S3. The absorbent body 40 has an absorbent material that absorbs liquid. The absorbent material can be exemplified by, for example, a hydrophilic fiber, a cellulose-based fiber (e.g., pulp), and a super absorbent polymer (SAP) 44.

[0055] Figure 6 is a plan view of the absorbent body 40, Figure 7 is a plan view of the absorbent panel 45. Figure 9is Figure 3 An enlarged view of the D portion shown is a schematic cross-sectional view of the absorbent sheet 45. The absorbent body 40 can have the absorbent sheet 45 in which the sheet 48 covers the skin side T1 and the non-skin side T2 of the superabsorbent polymer 44. The absorbent sheet 45 can be a so-called SAP sheet, and can be formed by sandwiching the superabsorbent polymer 44 with one sheet folded back or with a plurality of sheets. A cellulose-based fiber can be disposed together with the superabsorbent polymer 44 between the sheets 48 of the absorbent sheet 45.

[0056] The "absorbent sheet" of the present application is a sheet having only a superabsorbent polymer as an absorbent material and sandwiching the superabsorbent polymer with a sheet on the skin side and the non-skin side, or a sheet containing a superabsorbent polymer and a cellulose-based fiber as absorbent materials and satisfying any one of (1) the weight ratio of the superabsorbent polymer in the absorbent materials is 50% or more, preferably 70% or more, (2) the weight per unit area of the cellulose-based fiber is less than 100 g / m 2 , and (3) the thickness of a portion other than the sheet is less than 1 mm (including 0 mm).

[0057] The absorbent sheet 45 can have one layer or a plurality of layers. The absorbent sheet 45 of the present embodiment can have a first absorbent sheet 451 and a second absorbent sheet 452 disposed at a position closer to the skin side T1 than the first absorbent sheet 451. The first absorbent sheet 451 and the second absorbent sheet 452 each include the superabsorbent polymer 44 and the sheet 48 covering the skin side T1 and the non-skin side T2 of the superabsorbent polymer 44.

[0058] The sheet 48 of the first absorbent sheet 451 and the sheet 48 of the second absorbent sheet 452 can be the same or different. Preferably, the sheet 48 of the first absorbent sheet 451 can use a spunbond nonwoven fabric or a spunlace nonwoven fabric, and the sheet 48 of the second absorbent sheet 452 can use a thermal-bonded nonwoven fabric. In addition, the weight per unit area of the superabsorbent polymer of the first absorbent sheet 451 and the weight per unit area of the superabsorbent polymer of the second absorbent sheet 452 can be the same or different. Preferably, the weight per unit area of the superabsorbent polymer of the first absorbent sheet 451 can be higher than the weight per unit area of the superabsorbent polymer of the second absorbent sheet 452. Since the weight per unit area of the superabsorbent polymer of the second absorbent sheet located on the skin side is low, gel blocking caused by the superabsorbent polymer when repeatedly absorbing body fluid can be suppressed, and the second absorbent sheet located on the non-skin side can continuously absorb body fluid.

[0059] The outer side edge 451E of the first absorbent sheet 451 can be positioned more outward in the width direction W than the outer side edge 452E of the second absorbent sheet 452, or the outer side edge 451E of the first absorbent sheet 451 can be positioned more inward in the width direction W than the outer side edge 452E of the second absorbent sheet 452. The length of the first absorbent sheet 451 in the width direction W can be the same as the length of the second absorbent sheet 452 in the width direction W. In the present embodiment, the outer side edge 451E of the first absorbent sheet 451 is positioned more outward in the width direction W than the outer side edge 452E of the second absorbent sheet 452. The absorbent body 40 can include an absorbent sheet other than the first absorbent sheet 451 and the second absorbent sheet 452.

[0060] The absorbent body 40 includes a side region R45 extending from the outer side edge of the surface on the non-skin side T2 of the absorbent sheet 45 toward the inner side in the width direction W. In a configuration in which a plurality of absorbent sheets 45 are provided, the side region R45 is provided on the surface on the non-skin side T2 of the absorbent sheet 45 positioned most outward in the non-skin side T2. In the present embodiment, the side region R45 is provided on the surface on the non-skin side T2 of the first absorbent sheet 451. In a configuration in which the absorbent sheet 45 constitutes the surface on the non-skin side T2 of the absorbent body 40, the side region R45 is provided on the surface on the non-skin side T2 of the absorbent body 40. In a configuration in which the absorbent sheet 45 does not constitute the surface on the non-skin side T2 of the absorbent body 40 (for example, in a configuration in which an absorbent core is provided on the non-skin side T2 of the absorbent sheet), the side region R45 is provided on a surface other than the surface on the non-skin side T2 of the absorbent body 40. The outer side edge of the side region R45 is the outer side edge 45E of the absorbent sheet 45 (positioned most outward in the non-skin side T2), and the inner side edge of the side region R45 can be the outer side edge of the absorbent core 41 or the outer side edge of the crotch joint 31.

[0061] The absorbent body 40 can include the absorbent core 41. The absorbent core 41 can be a cellulose-based fiber layer stacked and disposed across the center in the width direction W of the absorbent article 1. The cellulose-based fiber can be, for example, pulp. In a plan view of the absorbent article 1, the area of the absorbent core 41 can be larger than the area of the absorbent sheet 45, and the absorbent sheet 45 can be disposed in the entire region in which the absorbent core 41 is disposed. The absorbent core 41 can include both the cellulose-based fiber and the superabsorbent polymer 44. However, the proportion of the superabsorbent polymer 44 to the entire weight of the absorbent material of the absorbent core 41 is lower than the proportion of the superabsorbent polymer 44 to the entire weight of the absorbent material of the absorbent sheet 45.

[0062] The absorbent body 40 can have an auxiliary absorbent layer having a nonwoven fabric arranged so as to overlap the absorbent core 41. The auxiliary absorbent layer can be composed of only the nonwoven fabric, or can be composed of the nonwoven fabric and another absorbent material (for example, a superabsorbent polymer). The auxiliary absorbent layer can be composed of the above-described absorbent sheet, or can be composed of the core wrap, or can be composed of the nonwoven fabric other than the core wrap and the absorbent sheet. The auxiliary absorbent layer can have a portion overlapping the absorbent core 41, or can have a portion not overlapping the absorbent core 41. The auxiliary absorbent layer can be arranged only at a position closer to the skin side T1 than the absorbent core 41, or can be arranged only at a position closer to the non-skin side T2 than the absorbent core 41, or can be arranged at both the skin side T1 and the non-skin side T2 of the absorbent core 41. The auxiliary absorbent layer of the present embodiment is composed of the sheet 48 of the first absorbent sheet 451 and the sheet 48 of the second absorbent sheet 452.

[0063] The shape of the absorbent article in plan view and the shape of the auxiliary absorbent layer (the first absorbent sheet 451 and the second absorbent sheet 452 in the present embodiment) can be different. The absorbent article can have a layered region in which the absorbent sheet and the auxiliary absorbent layer are layered, and an auxiliary region in which the absorbent core is not arranged and the auxiliary absorbent layer is arranged. In the layered region, the absorbent sheet and the auxiliary absorbent layer can overlap each other abutting against each other, or can overlap each other with another member interposed therebetween. In the present embodiment, the absorbent core is arranged in a region overlapping the auxiliary absorbent layer, and is not arranged in a region not overlapping the auxiliary absorbent layer. Thus, the layered region R41 is a region in which the absorbent core 41 is arranged in a plan view of the absorbent body (refer to FIG. 1). Figure 6 ) of the absorbent body. The layered region R41 is divided in the front-rear direction L. A region sandwiched by the layered regions divided in the front-rear direction constitutes the auxiliary region R42. The auxiliary region R42 is a region in which the absorbent core 41 is not arranged in the plan view of the absorbent body 40. The boundary between the layered region R41 and the auxiliary region R42 is the outer edge of the absorbent core.

[0064] The absorbent body 40 has at least the absorbent sheet 45 and has a high-absorbency polymer 44 having a relatively high absorbency. Thus, the absorbent body 40 is formed in a thin shape while ensuring the absorbency. In terms of the thickness of the absorbent body 40, the average thickness of the central region among the regions into which the absorbent body 40 is divided into three in the width direction can be 0.4 mm or more and 3.0 mm or less, and the average thickness of the regions on the sides among the regions into which the absorbent body 40 is divided into three in the width direction can be 0.4 mm or more and 2.0 mm or less. Since the thickness of the absorbent body 40 of the present embodiment is thin, the discomfort at the time of wearing due to the rigidity and thickness thereof can be suppressed while ensuring the absorbency. Further, the average thickness of the regions on the sides in the absorbent body can be thinner than the average thickness of the central region. In addition, in a state in which the absorbent article is frozen with liquid nitrogen in such a manner that the thickness of the absorbent article does not change, the absorbent article is cut with a cross section along the width direction, and the thickness of the cut surface is measured at 5-mm intervals in the width direction after air drying for 24 hours, the average thickness can be calculated using the average value thereof.

[0065] The skin-side sheet 11 is a sheet disposed on the skin side T1 from the absorbent body 40 and in contact with the wearer. The skin-side sheet 11 can be composed of any sheet-shaped material having a structure that allows liquid to pass through, such as a nonwoven fabric, a woven fabric, a porous plastic sheet, a mesh sheet, or the like. The skin-side sheet 11 can have a central sheet covering the center of the width direction W of the absorbent core 41 and a side sheet disposed at a position outside the central sheet in the width direction W, or can be composed of only one sheet (for example, the central sheet). The skin-side sheet 11 of the present embodiment is composed of one sheet.

[0066] The absorbent article 1 can have an auxiliary sheet 25 disposed between the skin-side sheet 11 and the absorbent body 40. The auxiliary sheet 25 is a sheet that assists in the intake of body fluid from the skin-side sheet 11 side to the absorbent body 40 side, and can be composed of a liquid-permeable sheet.

[0067] The absorbent article 1 can have a main body compression portion 81 in which at least the skin-side sheet 11 and the absorbent body 40 are compressed in the thickness direction. The main body compression portion 81 can compress a portion of the layers constituting the absorbent body 40, such as the absorbent sheet 45, and the skin-side sheet 11, or can compress the entire region of the thickness direction T of the absorbent body 40 and the skin-side sheet 11. Alternatively, the main body compression portion 81 can be formed by compressing the skin-side sheet 11, the absorbent core 41, and the absorbent sheet 45 (the first absorbent sheet 451 and the second absorbent sheet 452) in a region in which the absorbent core 41 and the absorbent sheet 45 overlap, and can be formed by compressing the skin-side sheet 11 and the absorbent sheet 45 (the first absorbent sheet 451 and the second absorbent sheet 452) in a region in which the absorbent core 41 is not disposed and only the absorbent sheet 45 is disposed.

[0068] The main body compression portion 81 can extend in a linear shape (straight or curved) in plan view. The main body compression portion can not only be a continuous linear shape, but also a collection of a plurality of compression constituent portions 82 arranged in a linear shape. The compression constituent portions 82 can be arranged at intervals, and can be in a dot shape or other patterns (e.g., star pattern, heart pattern). The main body compression portion 81 can have a region constituted only of the compression constituent portions 82 arranged at intervals (e.g., R85 of FIG. 8). Figure 1 In addition, the main body compression portion 81 can have a region constituted of the compression constituent portions 82 arranged at intervals and the linear compression portion 83 surrounding the compression constituent portions 82 (e.g., R86 of FIG. 8). Figure 1

[0069] The non-skin side sheet 20 is a sheet arranged at a position closer to the non-skin side T2 than the absorbent body 40. The non-skin side sheet 20 can have at least a part of a region arranged at a position closer to the non-skin side T2 than the absorbent body 40, and can have a region not arranged at a position closer to the non-skin side T2 than the absorbent body 40 (e.g., a region arranged at a position closer to the skin side than the absorbent body 40). The non-skin side sheet 20 can have a first non-skin side sheet 21 covering at least the side portion region R45, and a second non-skin side sheet 22 arranged at a position closer to the non-skin side T2 than the first non-skin side sheet 21 and joined to the first non-skin side sheet 21 by the non-skin side joint portion 30. The non-skin side T2 of the absorbent sheet 45 in the present embodiment is constituted of the first absorbent sheet 451. Therefore, the side portion region R45 of the non-skin side T2 of the absorbent sheet 45 extending from the outer edge 45E in the width direction W toward the inside in the width direction W is a region of the non-skin side T2 of the first absorbent sheet 451 extending from the outer edge 451E in the width direction W of the first absorbent sheet 451 toward the inside in the width direction W. The first non-skin side sheet 21 covers the side portion region R45 of the non-skin side T2 of the first absorbent sheet 451.

[0070] The first non-skin side sheet 21 can have a first region 211 covering the non-skin side T2 of the absorbent sheet 45, and a second region 212 folded back toward the skin side from the outer edge in the width direction W of the first region 211. The first region 211 can be joined to the second non-skin side sheet 22 by the non-skin side joint portion 30, and the second region 212 can be joined to the skin side of the skin side sheet 11 by the skin side joint portion 35. The first region 211 of the first non-skin side sheet 21 can not cover the center in the width direction W of the non-skin side of the absorbent body 40 but cover the side portion in the width direction W. In addition, the second region 212 of the first non-skin side sheet 21 can not cover the center in the width direction W of the skin side T1 of the skin side sheet 11 but cover the side portion in the width direction W. The first non-skin side sheet 21 can be arranged at intervals in the width direction W in a pair. The first non-skin side sheet 21 can be constituted of a hydrophobic sheet (e.g., a hydrophobic nonwoven fabric).​

[0071] The second non-skin-side sheet 22 can be provided only in a region covering the surface of the non-skin side T2 of the first non-skin-side sheet 21, or can extend to a position outside the first non-skin-side sheet 21 in the width direction W. In the form having the flaps, the second non-skin-side sheet 22 can be provided on the surface of the skin side of the flaps 5, and preferably can be provided so as to cover the surface of the non-skin side of the absorbent body 40 and span the flaps. The second non-skin-side sheet 22 can be provided in a pair spaced apart in the width direction W. The second non-skin-side sheet 22 can be composed of a hydrophobic nonwoven fabric or a film.

[0072] The non-skin-side sheet 20 can have a third non-skin-side sheet 23 provided on the surface of the non-skin side T2 of the absorbent article 1. The third non-skin-side sheet 23 can be provided so as to span the center in the width direction W of the absorbent article 1, and can be provided on the surface of the non-skin side T2 of the absorbent article 1 in the entire area range in the plan view of the absorbent article 1. The center in the width direction W of the surface of the non-skin side T2 of the absorbent body 40 can not be covered by either of the first non-skin-side sheet 21 and the second non-skin-side sheet 22, and can be covered by the third non-skin-side sheet 23. The third non-skin-side sheet 23 can be a liquid-impermeable sheet. The liquid-impermeable sheet can be a sheet formed by joining a gas-permeable resin film to a nonwoven fabric such as a laminated nonwoven fabric, a spunbond, or a spunlace, or the like.

[0073] The non-skin-side joint portion 30 can have at least one of a crotch joint portion 31 provided on the crotch region S3 and a front-rear joint portion 32 provided on at least one of the front region S1 and the rear region S2. The crotch joint portion 31 is a joint portion of the non-skin-side joint portion 30 provided on the crotch region S3. The front-rear joint portion 32 is a joint portion of the non-skin-side joint portion 30 provided on at least one of the front region S1 and the rear region S2. The crotch joint portion 31 can not reach the outer end edge of the crotch region S3, or can reach the outer end edge of the crotch region S3. In addition, in the form in which the crotch joint portion 31 reaches the outer end edge of the crotch region S3, the crotch joint portion 31 can be continuous with the front-rear joint portion 32.

[0074] The front-rear joint portion 32 can be provided only in the front side region S1, only in the rear side region S2, or in both the front side region S1 and the rear side region S2. The front-rear joint portion 32 of the present embodiment is provided in such a manner that the front-rear joint portion 32 provided in the front side region S1 and the front-rear joint portion 32 provided in the rear side region S2 are separated in the front-rear direction L. The front-rear joint portion 32 can have a first front-rear joint portion 321 and a second front-rear joint portion 322 separated in the width direction W from the first front-rear joint portion 321 and located outward of the first front-rear joint portion 321 in the width direction W. Since the first front-rear joint portion 321 and the second front-rear joint portion 322 are separated in the width direction W, each joint portion is likely to function independently. The first front-rear joint portion 321 of the present embodiment is connected to the crotch joint portion 31.

[0075] A fixing portion 60 for fixing the absorbent article 1 to a wearing article can be provided on the surface of the non-skin side T2 of the absorbent article 1. The fixing portion 60 is provided on the surface of the non-skin side T2 of the absorbent article 1, and in the present embodiment, on the surface of the non-skin side T2 of the third non-skin side sheet 23. The fixing portion 60 can have a main fixing portion 61 for fixing the absorbent article 1 to the surface of the skin side T1 of the wearing article S and a wing fixing portion 62 provided on the wing 5 and for fixing the absorbent article 1 to the surface of the non-skin side T2 of the wearing article S. The fixing portion 60 is a region provided with a fixing member (e.g., an adhesive) for fixing the absorbent article 1 to a wearing article. The main fixing portion 61 can be provided at least in a region overlapping the absorbent body 40. The fixing portion 60 extends in the front-rear direction L and is provided at a plurality of intervals in the width direction W. Alternatively, in a modified example, the fixing portion 60 can extend in the width direction W and be provided at a plurality of intervals in the front-rear direction L. The fixing portion 60 can be covered with a packaging sheet (not shown) or a release sheet 65 for individually packaging the absorbent article 1 before use.

[0076] The body fixing portions 61 of this embodiment are each provided on both sides across the rear treatment member 68. The body fixing portions 61 have a first body fixing portion 611 provided at a position on the outermost side in the width direction in the body fixing portion 61, a second body fixing portion 612 adjacent to the first body fixing portion 611, a third body fixing portion 613 adjacent to the second body fixing portion 612, and a fourth body fixing portion 614 adjacent to the third body fixing portion 613. These are arranged in the order of the first body fixing portion 611, the second body fixing portion 612, the third body fixing portion 613, and the fourth body fixing portion 614 from the outermost side in the width direction toward the inner side. The body fixing portions are each spaced apart. More specifically, there are a first spacing G611 as the spacing between the first body fixing portion 611 and the second body fixing portion 612, a second spacing G612 as the spacing between the second body fixing portion 612 and the third body fixing portion 613, and a third spacing G613 as the spacing between the third body fixing portion 613 and the fourth body fixing portion 614.

[0077] The rear treatment member 68 can be provided on the surface of the non-skin side T2 of the absorbent article 1. The rear treatment member 68 can have a hook member that can engage with the skin-side sheet 11 in a state in which the absorbent article 1 is folded or rolled with the skin side T1 of the absorbent article 1 inside when the absorbent article 1 is discarded. The rear treatment member 68 can be disposed across the center in the width direction W of the absorbent article 1 and the center in the longitudinal direction L of the absorbent article 1. The body fixing portions 61 can be disposed on both sides across the rear treatment member 68 in the width direction W. The rear treatment member 68 can be covered with the release sheet 65 before use.

[0078] (3) First feature of absorbent article

[0079] Next, the first feature of the absorbent article will be described in detail. The absorbent article of the first feature is configured so that the outer side portion of the absorbent body 40 is more easily expanded when absorbing body fluid, and more easily transmits information to the wearer that the absorbent body 40 has absorbed the body fluid. The absorbent article of the first feature is roughly classified into a first mode to a fourth mode. As a common structure of the first mode to the fourth mode, the absorbent article 1 includes a longitudinal direction L, a width direction W, and a thickness direction T, a crotch region S3, a front side region S1 and a rear side region S2, an absorbent body 40, a skin-side sheet 11, and a non-skin-side sheet 20. As the common structure, the absorbent body 40 has an absorbent sheet 45. As the common structure, the non-skin-side sheet 20 has a first non-skin-side sheet 21 and a second non-skin-side sheet 22 that cover the side portion region R45. The non-skin-side joint portion 30 that joins the first non-skin-side sheet 21 and the second non-skin-side sheet 22 has a crotch joint portion 31.

[0080] Next, each configuration will be described. In the absorbent article 1 of the first configuration, the side region R45 is provided on the surface of the non-skin side T2 of the absorbent body 40. That is, the absorbent sheet 45 is arranged on the surface of the non-skin side T2 of the absorbent body 40. Since the side region R45 is provided on the surface of the non-skin side T2 of the absorbent body 40, the absorbent sheet 45 is arranged in the region extending in the width direction W from the outer side edge on the surface of the non-skin side T2 of the absorbent body 40. Therefore, in the region extending in the width direction W from the outer side edge 40E on the surface of the non-skin side T2 of the absorbent body 40, the absorbent sheet 45 is easily expanded toward the non-skin side T2 when absorbing the body fluid, and the absorbent capacity of the absorbent sheet 45 can be effectively utilized. The region extending in the width direction W from the outer side edge on the surface of the non-skin side T2 of the absorbent body 40 is located on the outer side of the absorbent body 40, and is easily in contact with the leg of the wearer when worn.

[0081] In the absorbent article 1 of the first configuration, the outer side edge 45E of the absorbent sheet 45 arranged in the side region R45 is located on the outer side in the width direction W than the outer side edge 31E of the crotch joint 31. In the crotch region S3, the outer side edge 45E of the absorbent sheet 45 constituting the surface of the non-skin side of the absorbent body 40 is located on the outer side in the width direction W than the outer side edge 31E of the crotch joint 31. In the region on the outer side in the width direction W than the outer side edge 31E of the crotch joint 31, the first non-skin side sheet 21 and the absorbent sheet 45 are easily erected toward the skin side T1 with the crotch joint 31 as a base point, and the absorbent sheet 45 is more easily expanded toward the non-skin side T2 when absorbing the body fluid. Further, by the first non-skin side sheet 21 and the absorbent sheet 45 being erected toward the skin side with the crotch joint 31 as a base point, the expanded absorbent sheet 45 is easily in contact with the leg of the wearer.

[0082] Figure 8 is a cross section based on the enlarged view shown in Figure 5 Figure 8 (a) of FIG. 10 is a view showing a state in which the absorbent sheet 45 of the absorbent article 1 worn in the wearing article S has not absorbed the body fluid. Figure 8 (b) of FIG. 10 is a view showing a state in which the absorbent sheet 45 of the absorbent article 1 worn in the wearing article has absorbed the body fluid. Figure 8 (c) of FIG. 10 is a view showing a state in which the absorbent article 1 in which the absorbent sheet 45 has absorbed the body fluid is pressed toward the inner side in the width direction W. As shown in Figure 8 As shown in (c) of FIG. 10, when pressed by the leg, the first region 211 of the first non-skin side sheet 21 and the first absorbent sheet 451 are deformed with the crotch joint 31 as a base point, and the leg is easily in contact with the first non-skin side sheet 21 and the second non-skin side sheet 22. At this time, the surface of the non-skin side T2 of the first absorbent sheet 451 is in contact with the leg through the first non-skin side sheet 21, and the feeling of the swollen absorbent sheet 45 is easily transmitted to the leg. Therefore, the information that the absorbent body 40 has absorbed the body fluid is more easily transmitted to the wearer.​

[0083] In addition, the absorbent sheet 45 constituting the side region R45 can be the absorbent sheet in the case where the absorbent sheet is one layer, can be the absorbent sheet (the first absorbent sheet 451 of the present embodiment) located on the non-skin side T2 in the case where a plurality of absorbent sheets are provided, and can be the absorbent sheet located on the skin side in the case where the outer side edge of the absorbent sheet (the second absorbent sheet 452 of the present embodiment) located on the skin side is located at a position further outward than the outer side edge of the absorbent sheet (the first absorbent sheet 451) located on the non-skin side T2.

[0084] The absorbent article 1 of the second aspect includes the main body compression portion 81 and the absorbent core 41. In the absorbent article 1 of the second aspect, the outer side edge 81E of the main body compression portion 81 is located at a position further outward in the width direction W than the outer side edge 41E of the absorbent core 41 and is located at a position further inward in the width direction W than the outer side edge 45E of the absorbent sheet 45. In the absorbent article 1 of the second aspect, the outer side edge of the absorbent sheet is located at a position further outward than the outer side edge of the crotch joint portion 31 in the width direction W. In addition, in the second aspect to the fourth aspect, the absorbent sheet located at a position further outward in the width direction W than the outer side edge 31E of the crotch joint portion 31 is not limited to the absorbent sheet (the first absorbent sheet 451) constituting the side region R45 and can be the absorbent sheet (the second absorbent sheet 452) not constituting the side region R45. That is, the other layer constituting the absorbent body 40 such as the absorbent sheet can be disposed in the region further outward in the non-skin side T2 than the second non-skin side sheet 22.

[0085] Further, the relationship between the outer side edge 81E of the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 is such that the outer side edge 81E of the main body compression portion 81 is located at a position further outward in the width direction W than the outer side edge 41E of the absorbent core 41 in at least a part of the region, but it is preferable that there be a portion in which the outer side edge 81E of the main body compression portion 81 is located at a position further outward in the width direction W than the outer side edge 41E of the absorbent core 41 in the region extending in the width direction W from the crotch joint portion 31. It is also possible that there be a portion in which the outer side edge 81E of the main body compression portion 81 is located at a position further inward in the width direction W than the outer side edge 41E of the absorbent core 41 in the region extending in the width direction W from the crotch joint portion 31, as long as there is a portion in which the outer side edge 81E of the main body compression portion 81 is located at a position further outward in the width direction W than the outer side edge 41E of the absorbent core 41 in the region extending in the width direction W from the crotch joint portion 31.

[0086] The outer edge 45E of the absorbent sheet 45 is located outside the outer edge 31E of the crotch joint 31 in the width direction W, and also outside the main body pressing part 81 in the width direction W. The outer edge 45E of the absorbent sheet 45 easily rises towards the skin from the main body pressing part 81, and also easily rises towards the skin from the crotch joint 31. Therefore, when absorbing bodily fluids, the absorbent sheet 45 more easily expands towards the non-skin side T2, and the expanded absorbent sheet 45 easily adheres to the wearer's leg. The central portion in the width direction of the absorbent body allows the wearer to truly feel the absorbency of bodily fluids, while the sides of the absorbent body easily convey the risk of bodily fluid leakage to the wearer. With the expanded absorbent sheet 45 adhering to the leg, the wearer can easily determine when to replace the absorbent item 1. Furthermore, the outer edge 45E of the absorbent sheet 45 is located outside the outer edge 41E of the absorbent core 41 in the width direction W. An absorbent sheet 45 is disposed on the outer side of the absorbent body 40, but no absorbent core 41 is disposed there. Therefore, the outer side of the absorbent body 40 is more likely to expand due to the swelling of the highly absorbent polymer 44. With the expanded absorbent sheet 45 attached to the leg, it is easier to convey the information that the absorbent body 40 has absorbed bodily fluids to the wearer.

[0087] The third type of absorbent article 1 also has wings 5, and the second non-skin side panel 22 covers the side region R45 in an area closer to the non-skin side T2 than the first non-skin side panel 21 and is positioned across the wings 5. Furthermore, similar to the second type of absorbent article 1, the outer edge 45E of the absorbent sheet 45 in the third type is located further outward in the width direction W than the outer edge 31E of the crotch joint 31. The outer edge 45E of the absorbent sheet 45 easily rises towards the skin side T1, starting from the crotch joint 31. Figure 8 As shown, when the wing 5 is worn with the non-skin side T2 of the garment S folded back, the second non-skin side piece 22 is positioned across the area covering the non-skin side of the absorbent body 40 from the area folded back to the non-skin side T2 of the garment S. When the first non-skin side piece 21 is erected relative to the second non-skin side piece 22 with the crotch joint 31 as the base point, the outer side of the absorbent body 40 is also erected. In the area extending from the crotch joint 31 along the width direction W, the absorbent sheet 45 expands more easily when absorbing bodily fluids, allowing for effective utilization of the absorbent sheet 45's absorbent capacity. Furthermore, because the absorbent sheet 45 is erected with the crotch joint 31 as the base point towards the skin, the expanded absorbent sheet 45 is more likely to fit snugly against the wearer's leg when the side of the absorbent body 40 in the width direction W is against the body, making it easier for the wearer to determine when to replace the absorbent garment 1.

[0088] The absorbent article 1 of the fourth mode has the body fastening portions 61 and the absorbent core 41. In the absorbent article 1 of the fourth mode, the outer side edge 61E of the body fastening portion 61 is located at a position that is more outward than the outer side edge 41E of the absorbent core 41 and more inward than the outer side edge 45E of the absorbent sheet 45. The absorbent article 1 of the fourth mode is the same as the absorbent articles 1 of the second and third modes in that, in the width direction W, the outer side edge 45E of the absorbent sheet is located at a position that is more outward in the width direction W than the outer side edge 31E of the crotch joint portion 31. In addition, in the mode in which the plurality of body fastening portions 61 are arranged at intervals in the width direction W, the outer side edge of the body fastening portion 61 is the outer side edge of the body fastening portion 61 that is located at a position that is most outward in the width direction W. In addition, since the wing fastening portion 62 is not a fastening portion that fastens the absorbent article 1 to the surface of the skin side T1 of the wearing article S, it does not constitute the body fastening portion 61.

[0089] The outer side edge 45E of the absorbent sheet 45 is located at a position that is more outward in the width direction W than the outer side edge 31E of the crotch joint portion 31 and at a position that is more outward in the width direction W than the outer side edge 61E of the body fastening portion 61 and more outward than the outer side edge 41E of the absorbent core 41. The outer side edge of the absorbent sheet is apt to stand up toward the skin side from the crotch joint portion 31. In addition, the outer side edge of the absorbent sheet is located at a position that is more outward in the width direction W than the outer side edge of the absorbent core 41, and the absorbent sheet 45 is arranged at the outer side portion of the absorbent body 40, and the absorbent core 41 is not arranged. Therefore, the outer side portion of the absorbent body 40 is more apt to expand due to the swelling of the superabsorbent polymer 44. In addition, since the outer side edge 45E of the absorbent sheet 45 is located at a position that is more outward in the width direction W than the outer side edge 61E of the body fastening portion 61, the outer side edge 45E of the absorbent sheet 45 is not fixed to the wearing article S and is apt to expand toward the wearing article S (the non-skin side T2) due to the swelling of the superabsorbent polymer 44. Therefore, the absorbent sheet 45 is more apt to expand toward the non-skin side T2 when absorbing the body fluid, and the expanded absorbent sheet 45 is apt to adhere to the leg of the wearer, and the wearer can easily grasp the timing of replacement of the absorbent article 1. In addition, by the expanded absorbent sheet 45 adhering to the leg, it is more apt to transmit the information that the absorbent body 40 has absorbed the body fluid to the wearer. In addition, since the outer side edge 61E of the body fastening portion is located at a position that is more outward than the outer side edge 41E of the absorbent core 41, it is possible to fix to the wearing article until the area in which the absorbent sheet having a lower rigidity is arranged (the area that is more outward in the width direction than the absorbent core). Therefore, it is possible to suppress the distortion of the absorbent body caused by the absorbent sheet moving to adhere to the absorbent core.

[0090] The features of the structures of the first to fourth aspects described above are explained, but other structures can be provided in each of the aspects. For example, the second aspect structure can be provided in the first aspect absorbent article 1, and other aspect structures can be appropriately provided. Next, preferred structures that can be provided in the first to fourth aspects are explained. The following preferred structures can be provided in any of the aspects.

[0091] The first non-skin-side sheet 21 can include a first region 211 and a second region 212. The second region 212 of the first non-skin-side sheet 21 can be joined to the skin side T1 of the skin-side sheet 11 by the skin-side joint 35. Since the outer side portion of the absorbent body 40 can be covered by the first non-skin-side sheet 21, the entire thickness direction T of the absorbent body 40 is easily raised when raised toward the skin side based on the crotch joint 31. Therefore, the absorbent body 40 that has absorbed the body fluid is more easily pressed against the leg, and the wearer can further grasp the timing of replacement of the absorbent article 1. Further, since the outer side portion of the absorbent body 40 can be covered by the first non-skin-side sheet 21, the shape of the absorbent body 40 is easily maintained even in the case where the absorbent sheet 45 swells. Therefore, the body fluid can be continuously absorbed, and further, the absorbent body 40 is easily continuously pressed against the body even in the case where the body is pressed.

[0092] The skin-side joint 35 can join only the skin-side sheet 11, the second region 212, and the skin-side sheet 11 and the second region 212 of the absorbent sheet 45. That is, the skin-side joint 35 can not join the absorbent sheet together with the skin-side sheet 11 and the second region 212. Since the skin-side joint 35 does not join the absorbent sheet 45, the condition in which the thickness direction expansion of the absorbent sheet is hindered by the presence of the skin-side joint can be suppressed.

[0093] In the width direction W, the outer side edge 32E of the front and rear joints 32 can be located at a position that is more outward than the outer side edge 31E of the crotch joint 31. In other words, the outer side edge of the non-skin-side joint 30 of the front region S1 can be located at a position that is more outward in the width direction W than the outer side edge of the non-skin-side joint 30 of the crotch region S3. Alternatively, the outer side edge of the non-skin-side joint 30 of the rear region S2 can be located at a position that is more outward in the width direction W than the outer side edge of the non-skin-side joint 30 of the crotch region S3. According to this structure, since the outer side edge of the crotch joint 31 is located at a position that is more inward, the region in which the absorbent sheet of the crotch region S3 expands is secured, and since the outer side edge of the front and rear joints 32 is located at a position that is more outward, the area of the absorbent body 40 in the planar direction is secured in the front region S1 or the rear region S2, the body fluid is absorbed in a wider range in the width direction W, and the side leakage can be suppressed.

[0094] In the width direction W, the outer side edge 32E of the front-rear joint portion 32 can be located at a position that is more outward than the outer side edge 45E of the absorbent sheet 45. According to this structure, in at least one of the front side region S1 and the rear side region S2, it is possible to suppress the condition that the region of the absorbent sheet 45 that is more outward in the width direction W is excessively raised, using the front-rear joint portion 32 that is located at a position that is more outward in the width direction W than the absorbent sheet 45. Therefore, even in the case where the front side region S1 and the rear side region S2 are deformed due to movement of the legs or the like, it is possible to secure the length of the absorbent sheet 45 in the width direction W of the outer end portion of the absorbent sheet 45 in the front-rear direction L. Therefore, in the crotch region S3, the outer side portion of the absorbent sheet 45 is caused to be raised toward the skin side T1, and in the front side region S1 and the rear side region S2, the length of the absorbent sheet 45 in the width direction W is secured, and it is possible to balance the followability to the body and the effect of covering the body. In addition, the outer side edge 32E of the front-rear joint portion 32 of the present embodiment is constituted by the outer side edge of the second front-rear joint portion 322.

[0095] In the width direction W, the outer side edge 32E of the front-rear joint portion 32 can be located at a position that is more outward than the outer side edge 45E of the absorbent sheet 45, and the inner side edge 32I of the front-rear joint portion 32 can be located at a position that is more inward than the outer side edge 45E of the absorbent sheet 45. According to this structure, since the outer side edge 32E and the inner side edge 32I of the front-rear joint portion 32 cross the outer side edge 45E of the absorbent sheet 45, the condition that the outer side edge 45E of the absorbent sheet 45 is raised is suppressed using the front-rear joint portion 32, and it is possible to secure the length of the absorbent sheet 45 in the width direction W in at least one of the front side region S1 and the rear side region S2. In the front side region S1 that is disposed near the leg opening, it is easy for a gap to occur between the body and the absorbent article 1, and leakage is likely to occur. In addition, in the rear side region S2 that is disposed on the buttocks, the movement of the buttocks is large due to movement of the legs, and a gap is likely to occur between the body and the absorbent article 1, and leakage is likely to occur. However, by securing the length of the absorbent sheet 45 in the width direction W in at least one of the front side region and the rear side region, it is possible to suppress leakage. The inner side edge 32I of the front-rear joint portion 32 of the present embodiment is constituted by the inner side edge of the first front-rear joint portion 321.

[0096] The outer side edge 45E of the absorbent sheet 45 can overlap the front-rear joint portion 32. The outer side edge 45E of the absorbent sheet 45 of the present embodiment overlaps the second front-rear joint portion 322. That is, the outer side edge of the second front-rear joint portion 322 is located at a position that is more outward in the width direction W than the outer side edge 45E of the absorbent sheet 45, and the inner side edge of the second front-rear joint portion 322 is located at a position that is more inward in the width direction W than the outer side edge 45E of the absorbent sheet 45. According to this structure, it is possible to further suppress the condition that the outer side edge 45E of the absorbent sheet 45 is excessively raised in the front side region or the rear side region.

[0097] In a modification, the outer side edge 45E of the absorbent sheet 45 can be disposed at a position that is outward of the outer side edge of the first front and rear joint portion 321 and inward of the outer side edge of the second front and rear joint portion 322 in the width direction W. Since the second front and rear joint portion 322 and the first front and rear joint portion 321 are separated in the width direction at a position inward of the outer side edge of the absorbent sheet, the swelling of the high-absorbency polymer 44 is not hindered at the separated portion, and the expanded absorbent sheet easily comes into contact with the wearer's leg.

[0098] The outer side edge 41E of the absorbent core 41 is located at a position inward of the outer side edge 45E of the absorbent sheet 45 in the width direction W. According to this structure, the outer side edge 45E of the absorbent sheet 45 is located at a position outward of the outer side edge 41E of the absorbent core 41 in the width direction W. The absorbent sheet 45 is disposed at the outer side portion of the absorbent body 40, and the absorbent core 41 is not disposed. Therefore, the outer side portion of the absorbent body 40 is more easily expanded by the swelling of the high-absorbency polymer 44. By the expanded absorbent sheet coming into contact with the leg, it is more easily possible to transmit to the wearer the information that the absorbent body 40 has absorbed the body fluid.

[0099] It is preferable that the outer side edge of the absorbent core 41 can be inward of the outer side edge of the first absorbent sheet 451 in the width direction W and inward of the outer side edge of the second absorbent sheet 452 in the width direction W. According to this structure, the outer side portion of the first absorbent sheet 451 and the outer side portion of the second absorbent sheet 452 are both more easily expanded by the swelling of the high-absorbency polymer 44. It is also preferable that the outer side edge 41E of the absorbent core 41 can be located at a position inward of the outer side edge 45E of the absorbent sheet 45 at the position of the maximum width of the absorbent core 41. In the entire range of the front and rear direction L of the absorbent core 41, a region in which the absorbent sheet 45 is disposed and the absorbent core 41 is not disposed is provided at a position outward of the absorbent core 41 in the width direction W. Therefore, the outer side portion of the absorbent sheet 45 is more easily expanded.

[0100] In the width direction W, the outer side edge 41E of the absorbent core 41 can be located at a position that is more inside than the outer side edge 31E of the crotch joint 31. The area that is more outside in the width direction W than the outer side edge 31E of the crotch joint 31 is an area that swells due to the absorbent sheet 45 and is apt to stand up toward the skin side T1. The absorbent core 41 is located at a position that is more inside than the outer side edge 31E of the crotch joint 31. The area that swells due to the absorbent sheet 45 and is apt to stand up toward the skin side T1 is separated from the absorbent core 41. Therefore, the deformation of bulging toward the skin side T1 is realized in the outer side portion of the absorbent body 40, and in the area where the absorbent core 41 is disposed, the influence of the deformation of bulging is not easily received, and a flat shape along the body can be maintained. It is preferable that the outer side edge 41E of the absorbent core 41 can be located at a position that is more inside than the inner side edge of the crotch joint 31. It is more preferable that at the position of the maximum width of the absorbent core 41, the outer side edge of the absorbent core 41 can be located at a position that is more inside than the inner side edge of the crotch joint 31. Furthermore, the outer side edge 41E of the absorbent core 41 can be located at a position that is more inside in the width direction than the outer side edge of the front and rear joint 32 (in the present embodiment, the outer side edge of the second front and rear joint). Also, at the position of the maximum width of the absorbent core 41, the outer side edge 41E of the absorbent core 41 can be more inside in the width direction than the outer side edge of the second front and rear joint 322, and it is preferable that it is disposed at a position that is more inside than the inner side edge of the second front and rear joint 322 and more outside in the width direction than the outer side edge of the first front and rear joint 321.

[0101] In the width direction W, the inner side edge 5I of the side flap 5 can be located at a position that is more outside than the outer side edge 31E of the crotch joint 31. The inner side edge 5I of the side flap 5 is the root portion of the side flap 5, and is the portion that is most narrowed toward the inside in the width direction W. The second non-skin side sheet 22 that constitutes the side flap 5 is folded back toward the non-skin side T2 of the wearing article S with the inner side edge 5I of the side flap 5 as a base point, which is located at a position that is more outside in the width direction W than the outer side edge 31E of the crotch joint 31. The second non-skin side sheet 22 is pulled toward the non-skin side T2 and is more outside in the width direction W with the inner side edge 5I of the side flap 5 as a base point, which is located at a position that is more outside in the width direction W than the outer side edge 31E of the crotch joint 31. As a result, the first non-skin side sheet 21 and the outer side portion of the absorbent sheet 45 are more apt to stand up toward the skin side T1 with the outer side edge 31E of the crotch joint 31 as a base point.

[0102] The inner side edge 5I of the wing 5 can be located at a position further outward in the width direction W than the outer side edge 45E of the absorbent sheet 45. When the second non-skin side sheet 22 is pulled toward the non-skin side T2 and outward in the width direction W with the inner side edge 5I of the wing 5 as a base point, the outer side edge 45E of the absorbent sheet 45 is more easily erected toward the skin side Tl. Further, the inner side edge 5I of the wing 5 can be located at a position further outward in the width direction W than the outer side edge of the first non-skin side sheet 21 (in the present embodiment, the crease that becomes the boundary between the second region 212 and the first region 211). When the second non-skin side sheet 22 is pulled toward the non-skin side T2 and outward in the width direction W with the inner side edge 5I of the wing 5 as a base point, the absorbent sheet and the first non-skin side sheet 21 are more easily erected toward the skin side Tl.

[0103] In the width direction W, the outer side edge 61E of the main body fixing portion 61 can be located at a position further outward than the outer side edge 45E of the absorbent sheet 45. Since the outer side edge 61E of the main body fixing portion 61 is located at a position further outward in the width direction W than the outer side edge 45E of the absorbent sheet 45, the region overlapping the outer side edge 45E of the absorbent sheet 45 is fixed to the wearing article S with the main body fixing portion 61. Since the region fixed to the wearing article S is stabilized with the main body fixing portion 61, the outer side edge 45E of the absorbent sheet 45 is more easily erected toward the skin side Tl.

[0104] The outer side edge 61E of the main body fixing portion 61 can be located at a position further outward in the width direction W than the outer side edge 31E of the crotch joint portion 31. The region further outward in the width direction W than the outer side edge 31E of the crotch joint portion 31 is fixed to the wearing article S with the main body fixing portion 61. Therefore, the outer side portion of the absorbent sheet 45 is more easily erected with the outer side edge 31E of the crotch joint portion 31 as a base point. Further, the outer side edge 61E of the main body fixing portion 61 can be located at a position further outward in the width direction W than the outer side edge of the first non-skin side sheet 21. The outer side edge of the first non-skin side sheet 21 is more easily erected toward the skin side. The outer side edge 61E of the main body fixing portion 61 can be located at a position further inward in the width direction than the outer side edge 32E of the front-rear joint portion 32.

[0105] In the width direction W, the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 can be offset. Since the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 are offset, one absorbent sheet is arranged in the outer side portion of the absorbent sheet 45 instead of two absorbent sheets. The outer side portion of the absorbent sheet is suppressed in thickness by arranging one absorbent sheet, and the rigidity can be reduced. The outer side portion of the absorbent sheet is easily bent, which contributes to reducing the sense of discomfort, and the portion is easily expanded when absorbing body fluid, and the absorbent capacity can be effectively utilized. It is preferable that the outer side edge 451E of the first absorbent sheet 451 be located at a position further outward in the width direction W than the outer side edge 452E of the second absorbent sheet 452. The outer side portion of the first absorbent sheet 451 located on the non-skin side T2 is more easily expanded, and is pressed against the first non-skin side sheet 21 by the first absorbent sheet 451, so that the user is more easily able to recognize the state in which body fluid has been absorbed. Further, in the configuration in which the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 are offset, it is preferable that the weight per unit area of the high-absorbency polymer of the absorbent sheet (the first absorbent sheet 451 in the present embodiment) that extends to the outside in the width direction W be higher than the weight per unit area of the high-absorbency polymer of the absorbent sheet (the second absorbent sheet 452 in the present embodiment) that does not extend to the outside in the width direction W. The absorbent sheet that extends to the outside in the width direction W of the outer side portion of the absorbent body is more easily expanded.

[0106] In the width direction W, the outer side edge 45E of the absorbent sheet 45 can be located at a position further outward than the outer side edge of the auxiliary sheet 25. Since the auxiliary sheet 25 does not cover the skin side of the outer side portion of the absorbent sheet 45, the outer side portion of the absorbent sheet 45 is easily expanded not only toward the non-skin side T2 but also toward the skin side Tl. The outer side edge of the auxiliary sheet 25 can be arranged at a position further outward in the width direction W than the outer side edge of the maximum width of the absorbent core 41. The auxiliary sheet 25 is used to absorb body fluid in the entire region in the width direction W of the absorbent core 41, and the absorbent core 41 is used to hold the body fluid absorbed by the auxiliary sheet 25.

[0107] As Figure 4As shown, the absorbent article 1 can have an area in which the sheet arrangement area in which the absorbent sheets 45 are arranged is divided into three in the width direction W. The sheet arrangement area includes not only an area in which the first absorbent sheet 451 and the second absorbent sheet 452 overlap, but also an area in which only the first absorbent sheet 451 is arranged and an area in which only the second absorbent sheet 452 is arranged. The three divided areas have a central area RC located in the center of the width direction W and outer side areas RS located at positions further outward than the central area RC in the width direction W. The proportion of the high-absorbency polymer 44 in the absorbent material in the central area RC can be lower than the proportion of the high-absorbency polymer 44 in the absorbent material in the outer side areas RS. The proportion of the high-absorbency polymer 44 in the absorbent material can be calculated from the weight of the high-absorbency polymer 44 per weight of the absorbent material in a state in which the body fluid is not absorbed. The body fluid is first likely to be guided to the central area RC arranged opposite the discharge opening. Since the proportion of the high-absorbency polymer 44 in the central area RC is low, the retardation caused by the absorption of the body fluid by the high-absorbency polymer 44 is suppressed, the body fluid guided to the central area RC can be absorbed in the central area RC, and guided to the surrounding outer side areas RS. Since the proportion of the high-absorbency polymer 44 in the outer side areas RS is high, the body fluid guided to the outer side areas RS can be absorbed. By guiding and absorbing the body fluid to the side in the width direction W within the absorbent body 40, both the securing of the absorption capacity of the body fluid and the improvement of the absorption speed can be achieved.

[0108] The first absorbent sheet 451 and the second absorbent sheet 452 each include the high-absorbency polymer 44 and a sheet 48 covering the skin side T1 and the non-skin side T2 of the high-absorbency polymer 44. The sheet 48 covering the skin side of the high-absorbency polymer and the sheet 48 covering the non-skin side of the high-absorbency polymer can be joined using a sheet compression portion 46 in which the sheets 48 are compressed in the thickness direction, instead of using an adhesive. By joining the sheets of the absorbent sheets to each other using the sheet compression portion 46, the sheets 48 are likely to be separated from each other compared to a configuration in which the sheets 48 are joined using an adhesive, and the condition in which the swelling of the high-absorbency polymer 44 is hindered by the joining of the sheets 48 to each other can be suppressed. The sheet compression portion 46 can have a first sheet compression portion 461 in which the sheets of the first absorbent sheet 451 are joined to each other and a second sheet compression portion 462 in which the sheets of the second absorbent sheet 452 are joined to each other.

[0109] As Figure 7As shown, in the top view of the absorbent sheet 45, multiple sheet clamping portions 46 are arranged at intervals in the front-rear direction L and the width direction W. According to this method, since the sheet clamping portions 46 are arranged at intervals in the front-rear direction L and the width direction W, no joints are formed locally where the sheets formed by the sheet clamping portions 46 interlock, thus the highly absorbent polymer 44 easily expands throughout the entire area of ​​the absorbent sheet 45 in the top view. The sheet clamping portions 46 can be arranged in a staggered pattern as in this embodiment, or they can be arranged at intervals along the front-rear direction L, or they can be arranged at intervals along the width direction W.

[0110] It is possible Figure 9 As shown, a non-overlapping region NR is provided where the first pressing portion 461 and the second pressing portion 462 do not overlap in the thickness direction T. The non-overlapping region NR includes the overlapping areas of the first pressing portion 461 and the second absorbing sheet 452 (excluding the second pressing portion), the overlapping areas of the second pressing portion 462 and the first absorbing sheet 451 (excluding the first pressing portion), and the overlapping areas of the first absorbing sheet 451 (excluding the first pressing portion) and the second absorbing sheet 452 (excluding the second pressing portion). In other words, the non-overlapping region NR is the area excluding the overlapping portion of the first pressing portion 461 and the second pressing portion 462. In the areas where the pressing portions 461 overlap, the stiffness locally increases, potentially leading to unintentional deformation or discomfort based on that area. However, by providing non-overlapping regions, it is possible to suppress the situation where stiffness locally increases, suppress unintentional deformation based on the part with higher stiffness, and suppress discomfort caused by the part with higher stiffness.

[0111] In the top view of the absorbent article 1, the non-overlapping area NR can be 10% or more and less than 50% of the area of ​​the sheet arrangement area. Since the non-overlapping area NR is 10% or more of the area of ​​the sheet arrangement area, the area where the sheet clamping portions do not overlap occupies more than 10% of the total sheet arrangement area, which improves the softness of the absorbent sheet and enhances its conformity to the body. Furthermore, since the non-overlapping area is less than 50% of the area of ​​the sheet arrangement area, the area where any one sheet clamping portion is formed is more than 50% of the total sheet arrangement area, maintaining the adhesion between the sheets. Additionally, the area where the first and second sheet clamping portions overlap can be less than 20% of the area of ​​the sheet arrangement area, preferably less than 10%. This reduces the proportion of areas where the sheet clamping portions overlap and the stiffness locally increases, improving the softness of the absorbent sheet and enhancing its conformity to the body.

[0112] (4) The second characteristic of absorbent materials

[0113] Next, the second feature of the absorbent article will be described in detail. The absorbent article 1 of the second feature is configured to enable the entire absorbent body 40 to follow the body and to enable the body fluid to spread to the entire absorbent body 40 to effectively utilize the absorbent capacity. The absorbent article 1 of the second feature is roughly classified into a fifth mode and a sixth mode. As the common structure of the fifth mode and the sixth mode, the absorbent article 1 includes the front-and-rear direction L, the width direction W, and the thickness direction T, the crotch region S3, the front-side region S1 and the rear-side region S2, the absorbent body 40, the skin-side sheet 11, and the main body compression portion 81. As the common structure, the absorbent body 40 has the absorbent core 41 and the auxiliary absorbent layer.

[0114] As the common structure, in the width direction W, the outer side edge 41E of the absorbent core 41 is located at a position that is more inward than the outer side edge of the auxiliary absorbent layer. The absorbent core 41 is disposed across the center of the width direction W of the absorbent article 1 opposite the discharge port. With the cellulose-based fiber contained in the absorbent core, it is possible to ensure the instantaneous absorbency (absorption speed) with respect to menstrual blood and body fluid. Further, the outer side edge 41E of the absorbent core 41 is located at a position that is more inward than the outer side edge of the auxiliary absorbent layer, and when a large amount of body fluid is discharged, the body fluid that exceeds the outer side edge 41E of the absorbent core 41 is guided to the auxiliary absorbent layer. Also, it is possible to retain the body fluid with the auxiliary absorbent layer.

[0115] In the absorbent article 1 of the fifth mode, the main body compression portion 81 is disposed across the laminated region R41 (see Figure 3 ) in which the absorbent core 41 and the auxiliary absorbent layer are laminated and the auxiliary region R42 (see Figure 3 ) in which the absorbent core 41 is not disposed and the auxiliary absorbent layer is disposed. That is, the main body compression portion 81 has a portion that is across the outer edge of the absorbent core 41. In addition, it is sufficient that at least a portion of the main body compression portion 81 is across the laminated region R41 and the auxiliary region R42. In Figure 1 , the portion R81 of the main body compression portion 81 that is across the laminated region R41 and the auxiliary region R42 is surrounded by a circle with a double short dash line.

[0116] With the absorbent article 1 of the fifth mode, since the main body compression portion 81 is disposed across the laminated region R41 and the auxiliary region R42, even if the absorbent core 41 does not reach the outer side portion of the absorbent body 40, it is possible to increase the rigidity of the auxiliary region R42 (a region in which only the auxiliary absorbent layer is disposed) and to suppress deformation of the auxiliary region R42 to ensure the area of the absorbent body 40. Further, since the main body compression portion 81 is disposed across the laminated region R41 and the auxiliary region R42, it is possible to transmit force in the range of the two regions and to increase the followability to the body in the entire range of the width direction W of the absorbent body 40. By ensuring the area of the absorbent body 40 and enabling the entire absorbent body 40 to follow the body, it is possible to enable the body fluid to spread to the entire absorbent body to effectively utilize the absorbent capacity.

[0117] In the absorbent article 1 of the 6th configuration, in the crotch region S3, the distance G41 in the width direction W between the main body compression part 81 and the outer side edge 41E of the absorbent core 41 varies. In the case where the main body compression part 81 is located at a position closer to the inside in the width direction W than the outer side edge 41E of the absorbent core 41, the distance G41 is the distance in the width direction W between the outer side edge 81E of the main body compression part 81 and the outer side edge 41E of the absorbent core 41. Further, in the case where the main body compression part 81 is located at a position closer to the outside in the width direction W than the outer side edge 41E of the absorbent core 41, the distance G41 is the distance in the width direction between the inner side edge of the main body compression part 81 and the outer side edge 41E of the absorbent core 41. In addition, in the case where the main body compression part 81 is located at positions closer to the inside and the outside in the width direction W than the outer side edge 41E of the absorbent core 41, respectively, the distance G41 is the distance between the main body compression part 81 and the absorbent core 41 close to the outer side edge 41E of the absorbent core 41. Further, the distance G41 of the portion of the main body compression part 81 across the outer edge of the absorbent core 41 is 0 mm.

[0118] The distance G41 can also not vary over the entire region range of the crotch region S3, and is preferably varied over a range of more than half in the front-back direction L of the crotch region S3. In terms of whether the distance G41 varies over a range of more than half in the front-back direction L of the crotch region S3, an imaginary line dividing the crotch region into 10 equal parts in the front-back direction is drawn, the distance G41 on each imaginary line is measured, and in the case where the distance G41 differs by 50% or more, it is judged that the distance G41 varies over a range of more than half in the front-back direction L of the crotch region S3.

[0119] In the crotch region S3 of the absorbent article of the sixth configuration, the distance G41 between the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 changes. The region of the portion between the main body compression portion 81 and the absorbent core 41, in which the distance between the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 is longer, is likely to deform from the portion in which the distance between the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 is shorter. The region of the portion between the main body compression portion 81 and the absorbent core 41, in which the distance between the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 is longer, functions as a buffer region, which absorbs the force when the legs press from the outside in the width direction, and is likely to maintain the shape of the absorbent body 40. The auxiliary absorbent layer is lower in rigidity in the region extending to the position further outside than the absorbent core 41 than in the region overlapping the absorbent core 41, and is more likely to deform. However, by the region between the main body compression portion 81 and the absorbent core 41 functioning as a buffer region, the deformation of the auxiliary absorbent layer is suppressed, and the area of the absorbent body 40 can be ensured. The absorbent body 40 can be continuously disposed opposite the body, and the followability of the absorbent body 40 to the body can be improved. By ensuring the area of the absorbent body 40 and making the entire absorbent body 40 follow the body, the body fluid can be diffused to the entire absorbent body 40, and the absorbent capacity can be effectively utilized.

[0120] The fifth and sixth configurations can also have other structures. For example, in the absorbent article 1 of the fifth configuration, the structure of the sixth configuration can be adopted, and other configurations can be appropriately adopted. For example, in the absorbent article 1 of the sixth configuration, the main body compression portion 81 can be disposed across the laminated region R41 and the auxiliary region R42, as in the absorbent article 1 of the fifth configuration. Further, in the absorbent article 1 of the fifth configuration, the width direction distance between the main body compression portion 81 and the outer side edge 41E of the absorbent core 41 can change in the crotch region S3. Next, preferable structures that can be adopted in the fifth and sixth configurations will be described. The following preferable structures can be adopted in either configuration.

[0121] In the absorbent article of the second feature, the absorbent body 40 can not have the "absorbent sheet" of the present application. More specifically, the absorbent body 40 can also have a so-called SAP sheet other than the "absorbent sheet" of the present application. However, it is preferable that, in the absorbent article of the third feature, the absorbent body 40 can have the absorbent sheet 45. In the configuration in which the absorbent body 40 has the absorbent sheet 45, the auxiliary absorbent layer can be constituted by the absorbent sheet 45. The absorbent sheet 45 constituting the auxiliary absorbent layer sandwiches the superabsorbent polymer 44 with the sheet 48, and is less likely to deform compared to the auxiliary absorbent layer constituted by one nonwoven fabric. Therefore, the area of the absorbent body 40 is secured, and it is easy to continuously adhere to the body. Since the auxiliary absorbent layer is provided with the superabsorbent polymer, it is possible to make the absorbent body thin while securing the absorption capacity. Therefore, it is possible to improve the followability to the body. By securing the area of the absorbent body 40 and making the entire absorbent body 40 follow the body, it is possible to spread the body fluid to the entire absorbent body 40 and effectively use the absorption capacity.

[0122] The auxiliary absorbent layer of the present embodiment has the first absorbent sheet 451 and the second absorbent sheet 452 which are separated in the thickness direction T of the absorbent core 41. According to this structure, it is possible to further improve the absorption capacity of the absorbent body 40 using the plurality of absorbent sheets 45, and it is possible to make the absorbent body 40 thin while securing the absorption capacity, thereby improving the followability of the absorbent body. Further, in another configuration, it is also possible that the absorbent sheet 45 has only the first absorbent sheet 451, and the absorbent sheet 45 is not disposed on the skin side T1 of the absorbent core 41. According to this configuration, even in the case where the skin side sheet 11 is inadvertently broken when the main body compression portion 81 is formed, or the like, it is possible to suppress the condition in which the superabsorbent polymer 44 is exposed on the skin side. Further, it is also possible that the absorbent sheet 45 has only the second absorbent sheet 452, and the absorbent sheet 45 is not disposed on the non-skin side T2 of the absorbent core 41. By using the absorbent sheet 45 located on the position closer to the skin side T1 of the absorbent core 41, it is possible to suppress the rewetting of the body fluid. In addition, on the side on which the absorbent sheet is not disposed in either one of the skin side T1 and the non-skin side T2 of the absorbent core 41, it is possible to dispose a sheet such as a tissue paper, a nonwoven fabric, or the like, or not to dispose the sheet.

[0123] The sheet 48 covering the skin side of the superabsorbent polymer 44 and the sheet 48 covering the non-skin side of the superabsorbent polymer 44 can be joined by the sheet compression portion 46 formed by compressing the sheets 48 in the thickness direction T. By joining the sheets 48 of the absorbent sheets 45 to each other using the sheet compression portion 46, the sheet compression portion 46 becomes a deformation base point, the absorbent sheet 45 is softly deformed, and it is possible to further improve the followability of the absorbent body 40 to the body. The sheet compression portion 46 can have a first sheet compression portion 461 which joins the sheets of the first absorbent sheet 451 to each other, and a second sheet compression portion 462 which joins the sheets of the second absorbent sheet 452 to each other.

[0124] The area ratio of the sheet clamping portion 46 relative to the overall area of ​​the absorbent body 40 can be higher than the area ratio of the main clamping portion 81 relative to the overall area of ​​the absorbent body 40. In a configuration with multiple absorbent sheets as in this embodiment, where each absorbent sheet is provided with a sheet clamping portion, it is sufficient to satisfy either the condition that the area ratio of the first sheet clamping portion 461 is higher than that of the main clamping portion 81, or the area ratio of the second sheet clamping portion 462 is higher than that of the main clamping portion 81. According to this structure, since the area ratio of the sheet clamping portion 46 of the auxiliary absorbent layer is higher, the rigidity of the area where the auxiliary absorbent layer is disposed is increased, thereby improving the body fit while ensuring the area of ​​the absorbent body 40. By ensuring the area of ​​the absorbent body 40 and making the absorbent body 40 follow the body as a whole, bodily fluids can diffuse throughout the absorbent body 40, thus effectively utilizing the absorption capacity. Since the area ratio of the main clamping portion 81 is lower, the area of ​​the main clamping portion 81 in direct contact with the skin is smaller, which can suppress discomfort during wear.

[0125] It is possible Figure 7 As shown, in the top view of the absorbent sheet 45, multiple sheet clamping portions 46 are arranged at intervals in the front-rear direction L and the width direction W. According to this method, by arranging the sheet clamping portions 46 at intervals in the front-rear direction L and the width direction W, the rigidity of the area where the auxiliary absorbent layer is disposed is increased by the sheet clamping portions 46, thereby improving the body conformability while ensuring the area of ​​the absorbent body. The sheet clamping portions 46 can be arranged in a staggered pattern as in this embodiment, or they can be arranged at intervals along the front-rear direction L, or they can be arranged at intervals along the width direction W. By providing multiple sheet clamping portions 46 at intervals as deformation base points, the absorbent body 40 can be more easily deformed more flexibly by means of these multiple deformation base points, further improving the conformability of the absorbent body 40.

[0126] The main body compression portion 81 can be configured by a collection of compression constituent portions 82 arranged at intervals in the front-rear direction L and the width direction W in the plan view of the absorbent body 40. The maximum dimension of the sheet compression portion 46 in the plan view of the absorbent body 40 can be larger than the maximum dimension of the compression constituent portion 82. The maximum dimensions of the compression constituent portion 82 and the sheet compression portion 46 are the maximum dimensions in the plan view. The measurement is performed at five points in the sample, and the average value is taken. The main body compression portion 81 is provided to the skin-side sheet 11, and is easily brought into contact with the skin. Since the maximum dimension of the compression constituent portion 82 is relatively small, the discomfort when the main body compression portion 81 directly contacts the skin can be suppressed. On the other hand, since the maximum dimension of the sheet compression portion 46 is relatively large, the rigidity of the region where the absorbent core 41 is not provided and the absorbent sheet 45 is provided is increased by the sheet compression portion 46, the shape of the absorbent body 40 is easily maintained, and the area of the absorbent body 40 can be ensured. The absorbent body 40 can be continuously disposed opposite the body, and the followability of the absorbent body 40 to the body can be improved. By ensuring the area of the absorbent body 40 and making the entire absorbent body 40 follow the body, the body fluid can be diffused to the entire absorbent body 40, and the absorption capacity can be effectively utilized.

[0127] In a modification, the maximum dimension of the sheet compression portion 46 in the plan view of the absorbent body 40 can be smaller than the maximum dimension of the compression constituent portion 82. According to this configuration, since the maximum dimension of the compression constituent portion 82 is relatively large, the shape of the main body compression portion 81 is maintained, and the effects of diffusing the body fluid to the entire range in the width direction W of the absorbent body 40 and transmitting the force across the laminated region R41 and the auxiliary region R42 can be more easily obtained. Further, since the maximum dimension of the sheet compression portion 46 is relatively small, the influence of the sheet compression portion 46 at the time of swelling of the superabsorbent polymer 44 is suppressed, the superabsorbent polymer 44 is easily expanded in the entire range in the plan view of the absorbent sheet 45, and the absorption capacity can be effectively utilized.

[0128] In the plan view of the absorbent body 40, the shortest distance between the sheet compression portions 46 can be longer than the shortest distance between the compression constituent portions 82. Since the shortest distance of the compression constituent portion 82 is relatively short, the plurality of compression constituent portions 82 function integrally as a deformation base point of the absorbent body 40, and the absorbent article can be deformed in a desired manner. Further, by the plurality of compression constituent portions functioning integrally, the effects of diffusing the body fluid to the entire range in the width direction W of the absorbent body 40 and transmitting the force across the laminated region R41 and the auxiliary region R42 can be more easily obtained. The region between the sheet compression portions 46 is a region that is not pressed by the sheet compression portion 46, and is a region where the gap between the fibers of the sheet 48 is relatively large and the superabsorbent polymer 44 is easily swollen. Since the shortest distance of the sheet compression portion 46 is relatively long, the superabsorbent polymer 44 is easily swollen, and the absorption capacity can be more effectively utilized.

[0129] The main body compression portion 81 straddles the outer side edge 41E of the absorbent core 41, has an outer side compression portion 811 at a position located on the outer side in the width direction than the outer side edge 41E of the absorbent core 41, and has an inner side compression portion 812 at a position located on the inner side in the width direction than the outer side edge 41E of the absorbent core 41. The portion where the outer side compression portion 811 and the inner side compression portion 812 are connected becomes a portion straddling the laminated region R41 and the auxiliary region R42. The portion straddling the laminated region R41 and the auxiliary region R42 can also be a region R85 configured only by the compression-constituting portion 82 arranged with an empty space therebetween, but is preferably a region R86 configured by the compression-constituting portion 82 and the linear compression portion 83. The region R86 configured by the compression-constituting portion 82 and the linear compression portion 83 has both the compression-constituting portion 82 and the linear compression portion 83, and can further obtain the effect of increasing the rigidity of the auxiliary region R42 and the effect of transmitting force to the laminated region R41 and the auxiliary region R42.

[0130] The main body compression portion 81 can have the outer side compression portion 811 and the inner side compression portion 812 in the crotch region S3. The crotch region S3 is easily subjected to force in the inner side in the width direction applied by the legs and the like. According to this structure, the force applied to the outer side edge 41E of the absorbent core 41 before can be received by the outer side compression portion 811, and deformation of the outer side edge 41E of the absorbent core 41 can be suppressed. Furthermore, the deformation of the absorbent core 41 is suppressed by the inner side compression portion 812, the shape of the absorbent core 41 is easily maintained, and it is further easy to effectively utilize the absorbent capacity.

[0131] The main body compression portion 81 can have the outer side compression portion 811 and the inner side compression portion 812 also in regions other than the crotch region S3 (the front side region S1 and the back side region S2). In the front side region S1 and the back side region S2, the effect of suppressing the deformation of the absorbent core 41 can be further obtained. Furthermore, the portion R81 of the main body compression portion 81 straddling the laminated region R41 and the auxiliary region R42 can be provided at least in the crotch region S3, but can be provided in the crotch region S3, the front side region S1, and the back side region S2, respectively. The area of the absorbent body 40 can be ensured in the entire range in the front-rear direction of the absorbent body 40, and the absorbent capacity can be effectively utilized.

[0132] The main pressing part 81 can be arranged across the overlapping region R41 and the auxiliary region R42 in the crotch region S3 and the front region S1. The number of parts (R81) across the overlapping region R41 and the auxiliary region R42 in the front region S1 can be more than the number of parts across the overlapping region R41 and the auxiliary region R42 in the crotch region S3. According to this method, since the number of parts across the overlapping region R41 and the auxiliary region R42 in the crotch region S3 is smaller, the deformation of the absorbent 40 in the crotch region S3 can be suppressed, as well as the discomfort caused by the excessive stiffness of the crotch region S3. In addition, since the number of parts across the overlapping region R41 and the auxiliary region R42 in the front region S1 is larger, it is easier to continuously ensure the length of the absorbent 40 in the width direction in the front region S1, and the absorbent can be attached to the groin area in a planar manner.

[0133] The main pressing part 81 can be arranged across the overlapping region R41 and the auxiliary region R42 in the crotch region S3 and the rear region S2. The number of parts crossing the overlapping region R41 and the auxiliary region R42 in the rear region S2 can be greater than the number of parts crossing the overlapping region R41 and the auxiliary region R42 in the crotch region S3. According to this method, since the number of parts crossing the overlapping region R41 and the auxiliary region R42 in the crotch region S3 is smaller, the deformation of the absorber 40 in the crotch region S3 can be suppressed, as well as the discomfort caused by the excessive stiffness of the crotch region S3. Furthermore, since the number of parts crossing the overlapping region R41 and the auxiliary region R42 in the rear region S2 is larger, the shape of the absorber 40 in the rear region S2, which is prone to deformation due to the movement of the buttocks, can be maintained, and the length of the absorber 50 in the width direction can be continuously ensured.

[0134] The portion R81 of the main pressing part 81 spanning the stacked area R41 and the auxiliary area R42 can be respectively located at the narrowest position 41CN in the crotch area (refer to) Figure 6 The front and rear sides of the ) are provided. By arranging the main body clamping part 81 across the outer edge 41E of the absorbent core in the crotch area, which is the narrowest position 41CN of the crotch that is narrowest than the width of the absorbent core, in the front-rear direction, it is easier to suppress deformation in the width direction of the narrowest position 41CN of the crotch and to make more effective use of the absorbent capacity.

[0135] At least a part of the main body fixing portion 61 can be disposed in the auxiliary region R42. The auxiliary region R42 is fixed to the wearing article S with the main body fixing portion 61. Since the region fixed to the wearing article S is stable, deformation of the auxiliary region R42 is suppressed, and the area of the auxiliary region R42 can be ensured. The area of the main body fixing portion 61 disposed so as to overlap the auxiliary region R42 can be larger than the area of the main body fixing portion 61 disposed so as to overlap the laminated region R41. More preferably, the main body fixing portion 61 can be disposed so as to overlap only the auxiliary region R42, and not the laminated region R41. According to this structure, it is possible to maintain the softness of the laminated region R41 in which the absorbent core 41 is disposed, which has relatively high rigidity, while maintaining the shape of the auxiliary region R42, and to improve the followability to the body by deforming the entire absorbent body softly.

[0136] At least a part of the main body fixing portion 61 can overlap the main body compression portion 81 disposed in the auxiliary region R42. According to this structure, the region in the auxiliary region R42 in which the main body compression portion 81 is disposed is fixed to the wearing article S with the main body fixing portion 61. Since the region fixed to the wearing article S is stable, unintentional deformation of the main body compression portion 81 in the auxiliary region R42 can be suppressed. By stabilizing the shape of the main body compression portion 81, the area of the absorbent body can be ensured and the followability to the body can be improved.

[0137] In the width direction W, the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 can be offset. Since the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 are offset, one absorbent sheet is disposed in the outer side portion of the absorbent sheet 45, instead of two absorbent sheets. The outer side portion of the absorbent sheet is suppressed in thickness by being disposed with one absorbent sheet, and the rigidity can be reduced. The outer side portion of the absorbent sheet is easily bent, which contributes to reducing the feeling of discomfort, and the portion easily swells when absorbing body fluid, and the absorbent capacity can be effectively utilized.

[0138] The absorbent sheet 45 can contain the high-absorbency polymer 44 and the cellulose-based fiber. By the presence of the cellulose-based fiber, the condition in which the high-absorbency polymer unintentionally flows is suppressed, and the high-absorbency polymer can be disposed in the entire range in the plan view of the absorbent sheet. The unit area weight of the cellulose-based fiber of the absorbent sheet can be smaller than the unit area weight of the high-absorbency polymer of the absorbent sheet. Since the unit area weight of the cellulose-based fiber is relatively low and the unit area weight of the high-absorbency polymer is relatively high, the thickness of the entire absorbent sheet can be suppressed while ensuring the absorbent capacity. By suppressing the thickness of the entire absorbent sheet, the followability of the absorbent sheet to the body is improved, and the feeling of discomfort when worn can be suppressed.

[0139] The thickness of the absorbent 40 in the auxiliary region R42 can be less than 80% of the thickness of the absorbent in the laminated region R41. The comparison of the thicknesses can be made with the maximum thickness. According to the present aspect, the thickness of the outer side portion of the absorbent can be suppressed. Thus, the discomfort when the outer side portion of the absorbent is pressed against the leg can be suppressed. Further, in the aspect having the absorbent sheet as the auxiliary absorbent layer, the outer side portion of the absorbent sheet is liable to swell when absorbing the body fluid, and the absorbent capacity of the absorbent sheet can be effectively utilized. The thickness of the absorbent 40 in the auxiliary region R42 can be 2.4 mm or less, preferably 1.0 mm or less, and more preferably 0.7 mm or less. The thickness of the absorbent 40 in the laminated region R41 can be 3.0 mm or less, and preferably 1.5 mm or less. The thicknesses can be average thicknesses, which can be calculated using the average of the thicknesses measured at 5 mm intervals in the width direction after the absorbent article is cut in the cross section along the width direction in a state where the absorbent article is frozen using liquid nitrogen in such a manner that the thickness of the absorbent article does not change, and the cut absorbent article is air-dried for 24 hours.

[0140] The non-skin side T2 of the absorbent in the auxiliary region R42 can be covered with a sheet that is hydrophobic. In the present embodiment, the first non-skin side sheet 21 is composed of a sheet that is hydrophobic, and the non-skin side T2 of the auxiliary region R42 is covered with the first region 211 of the first non-skin side sheet 21. According to the present structure, the non-skin side T2 of the auxiliary region R42 is covered with a sheet that is hydrophobic, and the side leakage in the case where the superabsorbent polymer 44 of the absorbent sheet 45 swells, and the situation where the swollen superabsorbent polymer 44 comes into contact with the leg of the wearer can be suppressed. Further, it can be that the skin side T1 of the absorbent 40 in the auxiliary region R42 is also covered with a sheet that is hydrophobic. In the present embodiment, the skin side T1 of the auxiliary region R42 is covered with the second region 212 of the first non-skin side sheet 21. According to the present structure, the side leakage in the case where the superabsorbent polymer 44 of the absorbent sheet 45 swells, and the situation where the swollen superabsorbent polymer 44 comes into contact with the skin of the wearer can also be suppressed.

[0141] The first non-skin side sheet 21 can be folded back at the outer side edge of the absorbent 40, and disposed so as to cover the outer side portion of the absorbent 40 and across the skin side T1 and the non-skin side T2 of the absorbent 40. According to the present structure, the side leakage in the case where the superabsorbent polymer 44 of the absorbent sheet 45 swells can be further suppressed.

[0142] The skin-side joint portion 35 can join only the skin-side sheet 11, the second region 212, and the skin-side sheet 11 and the second region 212 of the absorbent sheet 45. That is, the skin-side joint portion 35 can not join the absorbent sheet together with the skin-side sheet 11 and the second region 212. Since the skin-side joint portion 35 does not join the absorbent sheet 45, it is possible to suppress a condition in which the expansion of the absorbent sheet in the thickness direction is hindered by the presence of the skin-side joint portion, and it is possible to effectively utilize the absorption capacity.

[0143] (5) Third Feature of Absorbent Article

[0144] Next, the third feature of the absorbent article will be described in detail. The absorbent article 1 of the third feature is configured to improve the wearing feeling by reducing the discomfort of the absorbent article 1, and to impart the impression that the absorbent article 1 is thin by the tactile sensation of the absorbent article 1, thereby improving the wearing feeling. The absorbent article 1 of the third feature is roughly classified into the seventh to ninth modes. As a common structure of the seventh and ninth modes, the absorbent article 1 includes the front-rear direction L, the width direction W, and the thickness direction T, the crotch region S3, the front side region S1 and the back side region S2, the absorbent body 40, and the side sheet.

[0145] The side sheet 90 is disposed at least on both sides of the width direction W of the absorbent body 40. The side sheet 90 can be disposed only at a position outside the absorbent body 40 in the width direction W. The side sheet 90 disposed only at a position outside the absorbent body 40 in the width direction can overlap the outer side edge 40E of the absorbent body 40, or can be separated from the outer side edge of the absorbent body 40 and disposed at a position outside the outer side edge 40E of the absorbent body 40 in the width direction W. Alternatively, the side sheet 90 can be disposed not only at a position outside the absorbent body 40 in the width direction W, but also overlapping the absorbent body 40 in the thickness direction T. That is, the side sheet 90 can be disposed across the outer side edge 40E of the absorbent body 40 in the width direction W.

[0146] The side sheet 90 can be composed of only one sheet, or can have a first side sheet 91 and a second side sheet 92. The material of the first side sheet 91 and the material of the second side sheet 92 can be the same or different. The first side sheet 91 and the second side sheet 92 can be composed of a nonwoven fabric having fibers. The first side sheet 91 and the second side sheet 92 can overlap each other in the thickness direction T, or can be separated without overlapping each other. In the mode in which the first side sheet 91 and the second side sheet 92 overlap each other, the second side sheet 92 can be disposed at the non-skin side T2 of the first side sheet 91.

[0147] The second side sheet 92 can have a protruding region R92 that constitutes a surface of the skin side T1 of the absorbent article 1 at a position that is further outward in the width direction W than the outer side edge 91E of the first side sheet 91. The protruding region R92 is a region of the second side sheet 92 that is at a position further outward in the width direction W than the outer side edge 91E of the first side sheet 91 and that constitutes a surface of the skin side T1 of the absorbent article 1.

[0148] The first side sheet 91 can have a skin side return portion 912 that is folded back toward the skin side T1 from a side fold at a position that is further outward in the width direction W than the outer side edge 40E of the absorbent body 40, and a non-skin side return portion 911 that is folded back toward the non-skin side T2 from the side fold. The side fold constitutes the outer side edge 91E of the first side sheet 91. In the form in which the first non-skin side sheet 21 constitutes the first side sheet 91 of the present embodiment, the first region 211 of the first non-skin side sheet 21 constitutes the non-skin side return portion 911, and the second region 212 of the first non-skin side sheet 21 constitutes the skin side return portion 912. The second side sheet 92 can have a covering region R91 that covers a surface of the non-skin side T2 of the non-skin side return portion 911 of the first side sheet 91. The covering region R91 can either be in contact with the surface of the non-skin side T2 of the non-skin side return portion 911 or can overlap the non-skin side return portion 911 via another member.

[0149] The side sheet 90 has a skin side region that constitutes a surface of the skin side T1 of the absorbent article 1 at a position that is further outward in the width direction W than the outer side edge 40E of the absorbent body 40. The skin side region can be provided in one side sheet or in a plurality of side sheets. The side sheet 90 can also span the skin side region and a region other than the skin side region (a region overlapping the absorbent body).

[0150] Figure 10 is a view that shows the arrangement pattern of the side sheet 90. In addition, in Figure 10 the structures other than the side sheet 90 and the absorbent body 40 are omitted. In Figure 10 In the form shown in (a) of FIG. 10, the first side sheet 91 is folded back with the side fold as a base point, and has a non-skin side return portion 911 and a skin side return portion 912. The first side sheet 91 and the second side sheet 92 are arranged in a pair with a space in the width direction W. The second side sheet 92 has a covering region R91 and a protruding region R92. The covering region R91 and the protruding region R92 are continuous. The region of the skin side return portion 912 that is further outward than the outer side edge 40E of the absorbent body 40 and the protruding region R92 constitute a skin side region. In Figure 10In the state shown in (a) of the present embodiment, since the side of the absorbent is covered by the first side sheet 91 folded back using the side fold line, and the second side sheet 92 extends over the wrapping region R91 and the extension region R92, the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located at a position inside the outer side edge of the first side sheet 91 in the width direction, the inner side edge of the second side sheet is less likely to adhere to the skin, and the discomfort can be reduced.

[0151] In Figure 10 In the state shown in (b) of the present embodiment, the first side sheet 91 and Figure 10 The state is the same as that shown in (a) of the present embodiment. The first side sheet 91 and the second side sheet 92 are arranged in a pair at intervals in the width direction W. The second side sheet 92 does not extend to a position outside the outer side edge 91E of the first side sheet 91, and does not have the extension region R92. The outer side edge 92E of the second side sheet 92 coincides with the outer side edge 91E of the first side sheet 91, or is located at a position inside the outer side edge 91E of the first side sheet 91 in the width direction W. The region of the skin side fold-back portion 912 outside the outer side edge 40E of the absorbent 40 constitutes the skin side region. In Figure 10 In the state shown in (b) of the present embodiment, since the side of the absorbent is covered by the first side sheet 91 folded back using the side fold line, the leakage resistance of body fluid can be improved.

[0152] In Figure 10 In the state shown in (c) of the present embodiment, the first side sheet 91 and Figure 10 The state is the same as that shown in (a) of the present embodiment. The first side sheet 91 and the second side sheet 92 are arranged in a pair at intervals in the width direction W. The second side sheet 92 does not overlap the non-skin side fold-back portion 911 of the first side sheet 91, and does not have the wrapping region R91. The outer side edge 92E of the second side sheet 92 is located at a position outside the outer side edge 91E of the first side sheet 91 in the width direction W. The second side sheet 92 has the extension region R92. The region of the skin side fold-back portion 912 outside the outer side edge 40E of the absorbent 40 and the extension region R92 constitute the skin side region. In Figure 10 In the state shown in (c) of the present embodiment, since the number of sheets of the region extending outside in the width direction from the outer side edge of the absorbent is small, the thickness of the portion adhering to the leg when the flaps are folded back to the non-skin side and used is thin, and the impression of a thin absorbent article 1 can be more easily imparted. Further, since the side of the absorbent is covered by the first side sheet 91 folded back using the side fold line, the leakage resistance of body fluid can be improved.

[0153] In Figure 10In the configuration shown in (d), the first side sheet 91 is not folded with the side fold line as a base point. The first side sheet 91 is disposed so as to cover the entire surface of the skin side Tl of the absorbent body 40. The first side sheet 91 covers the skin side Tl of the absorbent body 40 and does not cover the non-skin side T2 of the absorbent body 40. The second side sheet 92 has the extended region R92 at a position that is located more outward in the width direction than the outer side edge of the first side sheet 91. Since the first side sheet 91 does not have a non-skin side return portion, the second side sheet 92 does not have a wrapping region. The region of the first side sheet 91 that is located more outward than the outer side edge 40E of the absorbent body 40 and the extended region R92 constitute the skin side region. In the skin side region, the first side sheet 91 is in contact with the skin. In the non-skin side region, the second side sheet 92 is in contact with the non-skin side T2 of the absorbent body 40. Figure 10 In the configuration shown in (d), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced.

[0154] In the configuration shown in (d), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced. Figure 10 In the configuration shown in (e), the first side sheet 91 and the second side sheet 92 are folded with the side fold line as a base point. The first side sheet 91 is folded so as to cover the entire surface of the skin side Tl of the absorbent body 40. The first side sheet 91 covers the skin side Tl of the absorbent body 40 and does not cover the non-skin side T2 of the absorbent body 40. The second side sheet 92 has the extended region R92 at a position that is located more outward in the width direction than the outer side edge of the first side sheet 91. Since the first side sheet 91 does not have a non-skin side return portion, the second side sheet 92 does not have a wrapping region. The region of the first side sheet 91 that is located more outward than the outer side edge 40E of the absorbent body 40 and the extended region R92 constitute the skin side region. In the skin side region, the first side sheet 91 is in contact with the skin. In the non-skin side region, the second side sheet 92 is in contact with the non-skin side T2 of the absorbent body 40. Figure 10 In the configuration shown in (d), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced. Figure 10 In the configuration shown in (e), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced.

[0155] In the configuration shown in (d), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced. Figure 10 In the configuration shown in (d), the side of the absorbent body is not covered by the first side sheet 91, but the first side sheet 91 and the second side sheet 92 overlap at a position that is located more outward in the width direction than the outer side edge of the absorbent body 40, and the leakage resistance of body fluid can be improved. Further, since the inner side edge of the second side sheet 92 is located more inward in the width direction than the outer side edge of the first side sheet 91, the inner side edge of the second side sheet is less likely to adhere to the skin, and the feeling of discomfort can be reduced. Figure 10 The configuration pattern of the side sheet 90 of the absorbent article of the third feature is exemplarily shown in (a) to (e) of the third embodiment, but the configuration pattern of the side sheet of the third feature is not limited to Figure 10The shape shown. Next, the third feature will be described with reference to the absorbent article of the embodiment. Furthermore, the absorbent article of the embodiment is an example, and the absorbent article of the third feature also includes... Figure 10 The configuration pattern shown can be implemented using other structures. Figure 1-9 In the illustrated embodiment, the first non-skin side sheet 21 constitutes the first side sheet 91, and the second non-skin side sheet 22 constitutes the second side sheet 92. Figure 3 The diagram shows the protruding area R92 and the covered area R91.

[0156] Next, a seventh form of the absorbent article with the third feature will be described. In the absorbent article 1 of the seventh form, the side panel 90 has a first side panel 91 and a second side panel 92, and the second side panel 92 has a protruding region R92. The average coefficient of friction (MIU) of the skin-side T1 surface of the protruding region R92 is lower than the average coefficient of friction (MIU) of the outer surface of the first side panel 91. In addition, the outer surface of the first side panel 91 is the surface of the first side panel 91 that is arranged facing outward. In the structure in which the first side panel 91 is folded with the side crease as the base point, the outer surface of the first side panel 91 includes the skin-side T1 surface, the outer surface in the width direction, and the non-skin-side T2 surface. In the structure in which the first side panel covers the skin side of the absorbent, the outer surface of the first side panel 91 is the skin-side surface. In a structure in which the first side piece 91 covers the non-skin side of the absorber 40 and can stand upright with the non-skin side joint 30 as the base point, the outer surface of the first side piece 91 is the non-skin side surface of the region that is further outward in the width direction than the non-skin side joint 30.

[0157] When the absorbent material 1 is pressed inwards in the width direction W by the wearer's leg, the wearer's leg rubs against the skin side of the protruding area R92 of the first side piece 91, which is on the outer side in the width direction W. At this time, because the average coefficient of friction (MIU) of the skin side of the protruding area R92 is lower, the second side piece 92 smoothly adheres to the leg, reducing discomfort while preventing leakage of bodily fluids. Furthermore, based on the smooth feel of the second side piece 92, the wearer perceives a greater ease of slippage compared to the cushioning of the absorbent material 1, easily gaining the impression that it is a thinner material that easily deforms along its surface, rather than a thicker absorbent material 1 with cushioning. Therefore, based on the feel when wearing it, the wearer easily gains an impression of whether it is thin or not, improving the wearing comfort.

[0158] Here, the average friction coefficient (MIU) can be measured by the following method. Using KES-FB4-A-AUTO (an automatic surface tester) manufactured by Kato Tech Co., Ltd., each piece of 100 mm x 100 mm is disposed as a test sample on a smooth metal plane test stand. In the case where a test sample of 100 mm x 100 mm cannot be obtained, the test sample is cut to the size that can be extracted. Each test sample is moved horizontally at a constant speed of 0.1 cm / sec for 0 cm to 2 cm in the machine direction (the direction of fiber orientation) at the time of manufacturing each nonwoven fabric, and the average friction coefficient in the moving range is calculated as MIU under the condition of an initial load of 50 gf using a friction member (a probe) having an outer shape of 5 mm x 5 mm. The same measurement is performed 5 times for each test sample, and the average thereof is taken as the value of MIU for each test sample.

[0159] In the eighth aspect of the absorbent article 1, the side sheet 90 has the first side sheet 91 and the second side sheet 92. The second side sheet 92 can have the extended region R92. The first side sheet 91 has the skin-side folded-back portion 912 and the non-skin-side folded-back portion 911. The second side sheet 92 has the wrapping region R91. The non-joined region in which the non-skin-side folded-back portion 911 and the wrapping region R91 are not joined extends from the side fold to the inner side in the width direction W. The non-joined region is, in the embodiment, a region between the outer side edge 21E of the first non-skin-side sheet 21 and the non-skin-side joined portion 30. According to the present structure, when the absorbent article 1 is pressed toward the inner side in the width direction by the leg of the wearer, the leg of the wearer easily comes in contact with the vicinity of the side fold of the first side sheet 91. At this time, in the non-joined region, the first side sheet is not joined to the second side sheet and is easily deformed by the pressing. By the deformation of the first side sheet, the discomfort when the leg comes in contact with the outer side portion of the absorbent article can be reduced.

[0160] In the eighth aspect, the average friction coefficient (MIU) of the surface of the skin side T1 of the second side sheet 92 is lower than the average friction coefficient (MIU) of the surface of the outer side of the first side sheet 91. According to the present structure, when the absorbent article is pressed toward the inner side in the width direction by the leg of the wearer, the leg of the wearer is inserted into the region between the first side sheet 91 and the second side sheet 92 in the non-joined region extending from the side fold to the inner side in the width direction, and rubs against the surface of the skin side T1 of the wrapping region R91. At this time, since the average friction coefficient (MIU) of the surface of the skin side of the second side sheet 92 is low, the second side sheet 92 smoothly comes in contact with the leg, and the discomfort when coming in contact with the leg can be reduced. Also, according to the tactile sensation that the second side sheet 92 smoothly comes in contact, the wearer more easily feels the ease of slipping than the cushioning of the absorbent article 1, and easily obtains the impression that the absorbent article 1 is not thick and has a thickness that is easily deformed along the surface. Therefore, according to the tactile sensation at the time of wearing, the wearer easily obtains the impression of whether it is thin, and the wearability can be improved.

[0161] In the absorbent article 1 of the ninth form, the side panel 90 has a skin-side region. A liquid-impermeable membrane layer 95 is provided in the skin-side region (see reference). Figure 10 (a)). In the ninth form, the side sheet 90 may have at least one of the first side sheet 91 and the second side sheet 92, and may have a skin-side region in at least one of them. A liquid-impermeable membrane layer 95 is provided on the skin-side surface of the skin-side region. The side sheet constituting the skin-side region may be composed solely of the membrane layer 95, or may be a laminate of the membrane layer and other layers (e.g., a non-woven fabric layer 96). Furthermore, a liquid-impermeable membrane layer means that, after the product is removed from the area, 1 ml of physiological saline is dropped onto the skin-side surface of the area from a height of 3 cm using a dropper, and the water drop does not penetrate into the non-skin-side surface within 5 minutes of being dropped. In addition, the dropping is performed at different positions, and measurements are taken at three locations. A liquid-impermeable membrane layer is one in which the water drop does not penetrate into the non-skin-side surface within 5 minutes of being dropped at any of the three locations. The membrane layer may not have visually identifiable pores. The membrane layer may also have micropores (e.g., pores less than 20 μm) that are not visually identifiable. When it is impossible to determine whether visually identifiable pores have formed in the film, the average coefficient of friction (MIU) can be used for evaluation. A film with an average coefficient of friction (MIU) below 0.3 can be considered as not having visually identifiable pores.

[0162] According to this structure, the wearer's legs or groin area rubs against the skin side area during wear. At this time, because the skin side area has a liquid-impermeable membrane layer 95, it smoothly adheres to the leg, reducing discomfort during contact and friction. Furthermore, based on the smooth tactile feel of the skin side area, the wearer is more likely to perceive slippage compared to absorbent materials, easily gaining the impression of a thinner material that easily deforms along its surface, rather than a thicker absorbent material with cushioning. Therefore, based on the tactile feel during wear, the wearer easily perceives whether it is thin or not, improving the wearing comfort.

[0163] Forms 7 through 9 can also have other structures. For example, in absorbent item 1 of form 7, the structures of forms 8 and 9 can also be used, and other forms of structures can be appropriately adopted. Next, preferred structures that can be adopted in forms 7 through 9 will be explained. The following preferred structures can be adopted in any of the forms.

[0164] The second side sheet 92 can be arranged on the skin side T1 surface of the wing 5. In a state in which the wing 5 is worn so as to be folded back toward the non-skin side T2 of the wearing article S when worn, the second side sheet 92 is arranged so as to cover the skin side of the wearing article S from the area folded back toward the non-skin side T2 of the wearing article S. When the leg is placed against the outer side of the wearing article S, the second side sheet 92 arranged so as to be wrapped around the wearing article S is less likely to move, and the leg is less likely to slip on the second side sheet 92. At this time, since the surface of the skin side T1 of the second side sheet 92 is smoothly placed against the skin, discomfort when placed against the leg can be reduced, and the impression of a thin absorbent article 1 can be imparted to improve the feeling of wear.

[0165] The hydrophobicity of the surface of the skin side T1 of the second side sheet 92 can be higher than the hydrophobicity of the surface of the outer side of the first side sheet 91. The hydrophobicity is the resistance to water pressure, and indicates the difficulty of passage of moisture (body fluid). In the case where the second side sheet 92 has the extended region R92, even if the body fluid reaches the second side sheet beyond the first side sheet, since the hydrophobicity of the second side sheet 92 is relatively high, the body fluid can be inhibited from reaching the wearing article, and the deterioration of the feeling of wear caused by the body fluid adhering to the wearing article can be inhibited. Furthermore, in the case where the second side sheet 92 has the covered region R91, even if the body fluid reaches the second side sheet located on the non-skin side of the first side sheet, since the hydrophobicity of the second side sheet 92 is relatively high, the body fluid can be inhibited from reaching the wearing article, and the deterioration of the feeling of wear caused by the body fluid adhering to the wearing article can be inhibited.

[0166] The evaluation of the hydrophobicity can be performed as follows. First, a sample to be measured is obtained from the absorbent article. In the case where the sheet to be measured is joined to other members by an adhesive, fusion, or the like, the joined portion is removed by a method such as blowing cold air of a low-temperature jet, or the like, within a range that does not affect the contact angle of the fibers. After the sample to be measured is obtained, the degree of hydrophobicity is evaluated by the JIS L1092A method (low water pressure method). The larger the measured value, the higher the water resistance can be evaluated to be.

[0167] The hydrophobicity of the surface of the skin side T1 of the second side sheet 92 can be the same as or higher than the hydrophobicity of the surface of the non-skin side T2 of the absorbent article 1. The surface of the non-skin side T2 of the absorbent article 1 can be composed of a liquid-impermeable sheet, and in the present embodiment is composed of the third non-skin side sheet 23. Since the hydrophobicity of the surface of the skin side T1 of the second side sheet 92 is the same degree as or higher than the hydrophobicity of the surface of the non-skin side T2 of the absorbent article 1, the second side sheet 92 is less likely to allow the passage of the body fluid, the body fluid can be inhibited from reaching the wearing article, and the deterioration of the feeling of wear caused by the body fluid adhering to the wearing article can be inhibited.

[0168] The average deviation (SMD) of the surface roughness of the surface of the skin side Tl of the second side sheet 92 can be lower than the average deviation (SMD) of the surface roughness of the surface of the outer side of the first side sheet 91. Since the average deviation (SMD) of the surface roughness of the first side sheet 91 is high, the first side sheet 91 is likely to abut against the leg with points formed by irregularities rather than with a smooth surface, reducing the contact area, and discomfort can be further suppressed. On the other hand, since the average deviation (SMD) of the surface roughness of the second side sheet 92 is low, the second side sheet 92 smoothly abuts against the skin when the leg of the wearer slides on the surface of the skin side Tl of the second side sheet 92. Thus, the discomfort when abutting against the leg can be reduced, and the impression of a thin absorbent article can be imparted to improve the wearing feeling.

[0169] Here, the average deviation (SMD) of the surface roughness can be measured based on the characteristic value of KES manufactured by Kato Tech Co., Ltd., which is generally known as a characteristic value indicating the tactile sensation of the surface of a sheet (Reference: Standardization and Analysis of Hand Evaluation (2nd Edition), Author: Kawabata Toshiki, Published on July 10, 1955). Specifically, using KES-FB4 manufactured by Kato Tech Co., Ltd., 100 mm x 100 mm is used as a test sample in each sample and is disposed on a smooth metal plane test stand to measure the surface characteristics. In the case where a test sample of 100 mm x 100 mm cannot be obtained, the test sample is cut to the size that can be extracted. The measurement of the average deviation of the surface roughness is performed by applying a load of 10 gf to the front surface (or the back surface) and pressing a contact terminal of 0.5 cm in width formed by winding a piano wire of 0.5 mm in diameter to the test sample. The test sample is moved horizontally at a constant speed of 0.1 cm / sec for 2 cm, and a uniaxial tension of 10 g / cm is applied to the test sample. The SMD (average deviation of the surface roughness) is calculated from the measurement result. The SMD is calculated using five test samples, and the average value thereof is taken.

[0170] The amount of fluff of the fibers of the second side sheet 92 can be less than the amount of fluff of the fibers of the first side sheet 91. According to the present structure, since the amount of fluff of the second side sheet 92 is small, the uncomfortable irritation such as a stinging sensation caused by the fluff of the fibers is less likely to be perceived by the wearer, and the second side sheet 92 is likely to smoothly abut against the leg. Thus, the discomfort when abutting against the leg can be reduced, and the impression of a thin absorbent article can be imparted to improve the wearing feeling. The "amount of fluff of the fibers" means the number of fluffed fibers fn per unit area of the target region. In addition, when comparing the amount of fluff of the fibers in each region, the amount of fluff of the fibers in each region can be compared by performing a rubbing fastness test, which is used as a method of evaluating fluff in the industry.

[0171] < Rubbing Fastness Test >

[0172] (1) A measurement target region is cut out from a nonwoven fabric constituting a surface sheet in a predetermined size (for example, 300 mm x 150 mm) to obtain a measurement sample.

[0173] (2) The measurement sample is fixed on a measurement stage of a dyeing rub fastness testing machine (manufactured by DKK-TOA Corporation).

[0174] (3) A counterweight of 200 g is installed on the upper surface of a rubbing terminal of the dyeing rub fastness testing machine, and a cloth tape forming a rubbing surface is attached to the lower surface.

[0175] (4) The surface of the measurement sample fixed on the measurement stage is rubbed with the rubbing surface of the above-described rubbing terminal. At this time, the reciprocation number of the rubbing terminal is 3, and the moving range (reciprocation width) of the rubbing terminal is 120 mm.

[0176] (5) The fuzzing state of the surface of the measurement sample after rubbing by the rubbing terminal is observed.

[0177] A liquid-impermeable film layer 95 can be provided on the surface of the skin side T1 of the second side sheet 92. When the wearer's leg or crotch portion abuts or rubs against the second side sheet 92, the film layer 95 smoothly abuts against the leg or the like. Thus, the discomfort when abutting against the leg can be reduced, and the impression of a thin absorbent article can be imparted to improve the wearing feeling.

[0178] The second side sheet can be composed of only the film layer 95, or can be a laminated sheet of the film layer 95 and a liquid-permeable nonwoven fabric layer 96. The nonwoven fabric layer 96 is disposed at a position closer to the non-skin side T2 than the film layer 95. By the second side sheet 92 having the film layer 95 and the nonwoven fabric layer 96, both the effect of suppressing the discomfort by soft deformation of the nonwoven fabric layer 96 and the effect of suppressing liquid leakage by the film layer 95 can be obtained. Further, in the form having the flaps 5, by having the nonwoven fabric layer 96, the habitual bending with the flaps 5 is facilitated, the folded state is maintained, and recovery is not facilitated. By maintaining the folded state of the flaps 5, the fold of the flaps 5 can be maintained, and the discomfort generated against the leg can be reduced.

[0179] The absorbent article 1 may have a backing sheet disposed at a position closer to the non-skin side T2 than the absorber 40, forming the non-skin side T2 of the absorbent article 1. The backing sheet may be composed of the third non-skin side sheet 23 of this embodiment. In the region outside the width direction W of the side crease (outer edge 91E of the first side sheet 91), the backing sheet and the second side sheet 92 may be stacked. Between the side crease and the outer edge of the absorber 40, the skin-side fold-back portion 912 and the non-skin-side fold-back portion 911 may be stacked. The light transmittance of the area where the backing sheet and the second side sheet 92 are stacked may be higher than the light transmittance of the area where the skin-side fold-back portion 912 and the non-skin-side fold-back portion 911 are stacked. According to this structure, the light transmittance of the area where the backing sheet and the second side sheet are stacked is higher, making it easier for light to pass through. The wearer easily obtains the impression that the area where the backing sheet and the second side sheet are stacked is thinner, easily deformable, and soft against the skin. On the other hand, the area where the skin folds back and the non-skin folds overlap has lower light transmittance and is less likely to allow light to pass through. Wearers easily perceive the overlapping area as thicker, suggesting that bodily fluids are less likely to leak, thus providing reassurance about potential leaks. Based on the difference in appearance between the two areas, it is possible to convey reassurance regarding absorbency while simultaneously giving the impression of a thin, easily deformable garment.

[0180] Here, "light transmittance" is measured according to JIS K7105-7136. Light transmittance can be measured, for example, using a haze meter (model NDH700P2) manufactured by Nippon Denshoku Kogyo Co., Ltd. The measuring sensor is a circle with a diameter of 20 mm. When the area to be measured is larger than the measuring sensor, the measurement is performed without any changes. When the area to be measured is smaller than the sensor, for example, a hole with a diameter of 20 mm or less is made in a sample with 0% transmittance, and this hole is fixed at any location within the sensor. The area to be measured is then set within the hole, and the transmittance is measured. The transmittance of the area is calculated by comparing it with the transmittance without a sample, setting the transmittance without a sample to 100. Measurements are taken at 5 locations on the sample, and the average value is recorded.

[0181] The absorbent article 1 may have a top sheet that covers the skin side of the absorbent 40 at its center in the width direction, and abuts against the wearer. The top sheet may be a liquid-permeable sheet, or it may be composed of the skin-side sheet 11 of this embodiment, as in... Figure 10 (d) and Figure 10 The side sheet shown in (e) can also be used to form a shape that covers the entire absorbent body. The skin-side fold-back portion 912 of the first side sheet 91 is joined to the skin-side surface T1 of the top sheet. In this embodiment, as Figure 3As shown, the second region 212 of the first non-skin side panel 21 is joined to the skin side of the skin side panel 11 by the skin side joint 35. According to this structure, by covering the skin side of the topsheet with the first side panel 91 covering the side of the absorbent body, even in the case where the body fluid flows along the surface of the topsheet, the side leakage can be suppressed by the first side panel 91.

[0182] Between the side fold and the outer side edge of the absorbent body, the skin side return portion 912, the non-skin side return portion 911, and the topsheet are laminated. The thickness obtained by joining the backsheet and the second side panel 92 together can be thinner than the thickness obtained by joining the non-skin side return portion, the skin side return portion, and the topsheet of the first side panel 91 together. This thickness is measured in a state where the thickness of the absorbent article does not change by freezing the absorbent article with liquid nitrogen, cutting the absorbent article in a cross section along the width direction, and measuring the thickness of the cut surface after air drying for 24 hours. According to this aspect, since the thickness obtained by joining the backsheet and the second side panel 92 together is thin, the thinness is easily felt when the leg slides on the surface of the second side panel 92. In particular, in the case where the second side panel 92 constitutes a wing, when the article is wrapped around the leg, the leg easily comes in contact with the second side panel 92, and the thinness is more easily felt. On the other hand, since the thickness obtained by joining the skin side return portion, the non-skin side return portion, and the topsheet together is thick, when the leg comes in contact with the first side panel 91 from the side of the side fold, the cushioning provided by the thickness of the first side panel 91 increases, and the discomfort when coming in contact with the side fold can be reduced.

[0183] In the absorbent article of the third feature, the absorbent body 40 can not have the "absorbent sheet" of the present application. More specifically, the absorbent body 40 can have a so-called SAP sheet other than the "absorbent sheet" of the present application, or can have an absorbent core. However, it is preferable that, in the absorbent article of the third feature, the absorbent body 40 has the absorbent sheet 45. By providing the absorbent body with the absorbent sheet having a high-absorbency polymer, the absorbent body can be made thin while ensuring the absorption capacity. Therefore, the thickness of the absorbent article can be suppressed, and the impression of thinness and the tactile sensation of the thin absorbent article can further improve the wearing sensation.

[0184] The non-skin side folded-back portion 911 of the first side sheet 91 can be joined with the wrapping region R91 by a side joint portion. The side joint portion can be constituted by the non-skin side joint portion 30 of the present embodiment. In the width direction W, the outer side edge of the side joint portion can be located at a position that is more inward than the outer side edge 45E of the absorbent sheet 45. The outer side edge of the side joint portion is located at a position that is more inward in the width direction than the side fold line and the outer side edge 45E of the absorbent sheet 45. Therefore, the region that is not joined with the first side sheet 91 and the second side sheet 92 by the side joint portion overlaps with the region where the second side sheet 92 is not fixed with respect to the first side sheet 91. Therefore, the outer side edge of the absorbent sheet is easily deformed, and the discomfort when the absorbent article is applied to the leg can be reduced.

[0185] The absorbent article of the third feature is configured to give an impression that it is a thin absorbent article 1, and the maximum thickness of the absorbent body is preferably 3.0 mm or less, and preferably can be 1.5 mm or less. Furthermore, the maximum thickness of the absorbent article can be 3.0 mm or less, and preferably can be 2.5 mm or less. According to the present configuration, the thickness of the absorbent article can be suppressed, and the wearing feeling can be further improved by the impression of thinness and the tactile sensation of the thin absorbent article.

[0186] (6) The fourth feature of the absorbent article

[0187] Next, the fourth feature of the absorbent article will be described in detail. The absorbent article 1 of the fourth feature is configured to suppress deformation of the outer side edge 41E of the absorbent core 41, and the wearing feeling of the absorbent article 1 can be further improved. The absorbent article 1 of the fourth feature is roughly classified into the tenth mode to the thirteenth mode. As a common structure of the tenth mode and the thirteenth mode, the absorbent article 1 has the front-and-rear direction L, the width direction W, and the thickness direction T, the crotch region S3, the front side region S1 and the rear side region S2, the absorbent body 40, and the main body fixing portion 61. The absorbent body 40 of the fourth feature has the absorbent core 41. The absorbent core 41 is disposed across the center of the width direction W of the absorbent article 1, and is disposed opposite the vaginal opening or the urine discharge opening in the crotch region S3, and can rapidly absorb body fluid by the cellulose-based fiber contained in the absorbent core. In the absorbent article of the fourth feature, the absorbent body 40 can not have the "absorbent sheet" of the present application. More specifically, the absorbent body 40 can have a so-called SAP sheet other than the "absorbent sheet" of the present application, or can have only the absorbent core. Furthermore, in the absorbent article of the fourth feature, the absorbent body 40 can have the "absorbent sheet" of the present application.

[0188] In the absorbent article 1 of the 10th configuration, at least a part of the main body fixing portion 61 is disposed at a position wider than the outer side of the outer side edge 41E of the absorbent core 41 in the crotch region S3. According to this structure, when the absorbent article 1 is worn in the undergarment or the like, the region wider than the outer side of the outer side edge 41E of the absorbent core 41 in the width direction W is fixed to the undergarment or the like, and the condition in which the outer side portion of the absorbent article 1 stands up can be suppressed. Thus, the deformation of the outer side edge 41E of the absorbent core 41 and the condition in which the outer side edge 41E of the absorbent core 41 is pressed against can be suppressed, and the discomfort at the time of wearing can be suppressed.

[0189] The position in the width direction W in the crotch region S3 can vary for the outer side edge 41E of the absorbent core 41. The absorbent core 41 can be provided with a crotch narrowest position 41CN at which the length of the absorbent core 41 in the width direction W is shortest in the crotch region S3, and a crotch widest position 41CM at which the length of the absorbent core 41 in the width direction W is longest in the crotch region S3. Two of the four main body fixing portions 61 (the first main body fixing portion 611 and the second main body fixing portion 612) can be disposed at positions wider than the outer side edge 41E of the absorbent core 41 in the width direction W in the entire region of the crotch region S3. The two main body fixing portions 61 can be disposed at positions wider than the crotch widest position 41CM in the width direction W, and the four main body fixing portions 61 can be disposed at positions wider than the crotch narrowest position 41CN in the width direction W. That is, the inner side edge 61I of the main body fixing portion 61 can be disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction W at the crotch narrowest position 41CN.

[0190] In the absorbent article 1 of the 10th configuration, the maximum width of the absorbent core 41 in the crotch central region S33 is shorter than the maximum width of the absorbent core 41 in the crotch front region S31 and shorter than the maximum width of the absorbent core 41 in the crotch rear region S32. According to this structure, if the absorbent article 1 is pinched by the leg at the time of wearing, the absorbent article 1 is pressed by the inner side of the thigh, and the crotch central region S33 is easily pressed to a position inside in the width direction W than the crotch front region S31 and the crotch rear region S32. Since the maximum width of the absorbent core 41 is shorter in the crotch central region S33 and longer in the crotch front region S31 and the crotch rear region S32, the shape of the outer side edge 41E of the absorbent core 41 easily follows the shape of the leg, and the discomfort at the time of wearing can be reduced. In this embodiment, the crotch widest position 41CM is disposed in the crotch front region S31 and the crotch rear region S32, and is not disposed in the crotch central region S33.

[0191] In the absorbent article 1 of the 11th configuration, the body fastening portions 61 extend in the front-rear direction L and are arranged at intervals in the width direction W. The body fastening portions 61 have at least the first body fastening portion 611 and the second body fastening portion 612. The second body fastening portion 612 is located at a position outside the width direction W from the first body fastening portion 611. In the crotch region S3, at least a portion of the first interval G611, which is the interval between the first body fastening portion 611 and the second body fastening portion 612, is arranged at a position outside the width direction W from the outer side edge 41E of the absorbent core 41. The first interval G611 need only be arranged at a portion of the crotch region S3, but is preferably arranged at the entire crotch region S3.

[0192] According to the present configuration, at least a portion of the first body fastening portion 611 and at least a portion of the first interval G611 are arranged at a position outside the width direction W from the outer side edge 41E of the absorbent core 41 in the crotch region S3. Until the region outside the width direction W from the outer side edge 41E of the absorbent core 41 is fixed to the wearing article S when the absorbent article 1 is worn in the wearing article S, the condition in which the outer side portion of the absorbent article 1 stands up can be suppressed. Thus, the deformation of the outer side edge 41E of the absorbent core 41 and the condition in which the outer side edge 41E of the absorbent core 41 is pressed against can be suppressed, and the discomfort during wearing can be suppressed. If the absorbent article 1 is pinched by the leg during wearing, the absorbent article is pressed by the inner side of the thigh. At this time, the first interval G611 is arranged at a position outside the width direction W from the outer side edge 41E of the absorbent core 41, and the first interval G611 functions as a buffer region. Thus, the pressing of the outer side edge 41E of the absorbent core 41 by the inner side of the thigh can be softened, and the discomfort during wearing can be reduced.

[0193] In addition, in the present embodiment, the first interval G611 and the second interval G612 are located at positions outside the width direction W from the outer side edge 41E of the absorbent core in the entire range of the crotch region, and a portion of the third interval G613 is located at a position outside the width direction W from the outer side edge 41E of the absorbent core 41 in the crotch region S3. Since the plurality of intervals are arranged at intervals in the width direction W, the buffer region can be provided in stages, and the effect of softening the pressing of the outer side edge 41E of the absorbent core 41 by the inner side of the thigh can be more easily obtained.

[0194] In the 12th configuration of the absorbent article 1, at least a part of the main body fastening portion 61 is disposed at a position wider than the outer side of the outer side edge 41E of the absorbent core 41 in the crotch region S3 and the front side region S1. The pressing force and deformation in the crotch region S3 are transmitted to the front side region S1 from the crotch region S3. At this time, since the main body fastening portion 61 is disposed at a position wider than the outer side of the outer side edge 41E of the absorbent core 41 in the crotch region S3 and the front side region S1, the outer side portion of the absorbent article 1 is fixed to the wearing article until the region wider than the outer side of the outer side edge 41E of the absorbent core 41 in the width direction W when the absorbent article 1 is worn in the wearing article S, and the standing up of the outer side portion of the absorbent article 1 can be suppressed. Therefore, the deformation of the outer side edge 41E of the absorbent core 41 and the contact of the outer side edge 41E of the absorbent core 41 can be suppressed, and the discomfort at the time of wearing can be suppressed.

[0195] In the 12th configuration of the absorbent article 1, at least a part of the front end edge of the main body fastening portion 61 is disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction W in the front side region S1. Since the front end edge of the main body fastening portion 61 is disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction, the outer side portion of the absorbent article 1 in the front side region S1 is less likely to stand up, and the discomfort caused by the standing up of the outer side portion of the absorbent article 1 in the front side region S1 when a force is applied to the front side region S1 at the time of leg movement or the like can be reduced.

[0196] In the present embodiment, the first main body fastening portion 611 and the second main body fastening portion 612 are disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction W in the entire region of the front side region S1 and the entire region of the crotch region S3. The third main body fastening portion 613 and the fourth main body fastening portion 614 cross the outer side edge 41E of the absorbent core 41 in the front side region S1 and the crotch region S3. Further, the front end edge of the first main body fastening portion 611 and the front end edge of the second main body fastening portion 612 are disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction W, and the front end edge of the third main body fastening portion 613 and the front end edge of the fourth main body fastening portion 614 are disposed at a position inside the outer side edge 41E of the absorbent core 41 in the width direction.

[0197] In the 13th configuration of the absorbent article 1, at least a part of the main body fastening portion 61 is disposed at a position wider than the outer side of the outer side edge 41E of the absorbent core 41 in the crotch region S3 and the rear side region S2. The pressing force and deformation in the crotch region S3 are transmitted to the rear side region S2. At this time, since the main body fastening portion 61 is disposed at a position wider than the outer side of the outer side edge 41E of the absorbent core 41 in the crotch region S3 and the rear side region S2, the outer side portion of the absorbent article 1 is fixed to the wearing article S until the region wider than the outer side of the outer side edge 41E of the absorbent core 41 in the width direction W, and the condition that the outer side portion of the absorbent article 1 stands up can be suppressed. Therefore, the condition that the outer side edge of the absorbent core deforms and the outer side edge of the absorbent core abuts can be suppressed, and the discomfort at the time of wearing can be suppressed.

[0198] In the 13th configuration of the absorbent article 1, at least a part of the rear end edge of the main body fastening portion 61 is disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the rear side region S2. Since the rear end edge of the main body fastening portion is disposed at a position wider than the outer side edge of the absorbent core in the width direction, the outer side portion of the absorbent article 1 in the rear side region S2 is less likely to stand up, and the discomfort caused by the outer side portion of the absorbent article in the rear side region standing up at the time of movement of the buttocks or the like can be reduced.

[0199] In the present embodiment, the first main body fastening portion 611 and the second main body fastening portion 612 are disposed at a position wider than the outer side edge 41E of the absorbent core 41 in the width direction W in the entire region of the rear side region S2 and the entire region of the crotch region S3. The third main body fastening portion 613 and the fourth main body fastening portion 614 cross the outer side edge 41E of the absorbent core 41 in the rear side region S2 and the crotch region S3. Further, the rear end edge of all the main body fastening portions 61 is disposed at a position wider than the outer side edge of the absorbent core in the width direction.

[0200] The structures of the features of each of the 10th to 13th configurations described above are described, but other structures can be adopted in each configuration. For example, in the 10th configuration of the absorbent article 1, the structure of the 11th configuration can be adopted, and the structure of other configurations can be appropriately adopted. Next, preferable structures that can be adopted in the 10th to 13th configurations are described. The following preferable structures can be adopted in any one of the configurations.

[0201] The main body fastening portions 61 located on the outer side of the outer side edge 41E of the absorbent core 41 in the width direction W can be continuous across the front region S1, the crotch region S3, and the back region S2. The condition in which the outer side portion of the absorbent article 1 is raised is suppressed in the entire range in the front-back direction L of the absorbent article 1, and the discomfort at the time of wearing can be suppressed. In the present embodiment, the first main body fastening portion 611 and the second main body fastening portion 612 are located on the outer side of the outer side edge 41E of the absorbent core 41 in the width direction W in the entire range in the front-back direction L of the absorbent article 1 across the front region S1, the crotch region S3, and the back region S2. The intervals (for example, the first interval G611) between the main body fastening portions located on the outer side of the outer side edge of the absorbent core in the width direction W can also be continuous across the front region S1, the crotch region S3, and the back region S2. The cushioning region is provided in the entire range in the front-back direction of the absorbent article, the contact with the legs is suppressed, and the discomfort at the time of wearing can be suppressed.

[0202] The wing fastening portions 62 can be arranged on the extension lines extending outward in the width direction W from the crotch narrowest position 41CN of the absorbent core 41. The regions fastened by the wing fastening portions 62 correspond to the crotch region of the wearing article S, and are regions in which the legs are easily pinched. Since the crotch narrowest position 41CN of the absorbent core 41 is arranged in this region, the outer side edge 41E of the absorbent core 41 easily follows the shape of the inner side of the thigh, and the discomfort at the time of wearing can be reduced. Furthermore, even in the case where the crotch narrowest position 41CN of the absorbent core 41 is pressed, since the wearing article S is wrapped with the wing fastening portions 62 arranged on the extension lines in the width direction thereof, the deformation of the absorbent core 41 at the crotch narrowest position 41CN can be suppressed, the shape of the absorbent core 41 is maintained, and the discomfort caused by the deformation of the absorbent core 41 can be suppressed.

[0203] The wing fastening portions 62 of the present embodiment extend in the front-back direction L and are arranged at intervals in the width direction W. The wing fastening portions 62 of the present embodiment are arranged on the extension lines extending in the width direction from the crotch narrowest position 41CN, and are not arranged on the extension lines extending in the width direction from the crotch widest position 41CM.

[0204] The crotch narrowest position 41CN can be disposed at a position on the rear side of the center of the front-rear direction L of the crotch region S3. When the center of the front-rear direction L of the crotch region S3 is aligned with the center of the front-rear direction L of the crotch region of the wearing article, the vaginal orifice is disposed in opposition to a region on the front side of the center of the front-rear direction L of the crotch region S3. The crotch narrowest position 41CN is disposed at a position on the rear side of the center of the front-rear direction L of the crotch region S3, and the width of the absorbent core 41 of the region disposed in opposition to the vaginal orifice (the region on the front side of the center of the front-rear direction of the crotch region) is wider than the width of the crotch narrowest position 41CN, and can hold the body fluid discharged from the vaginal orifice. By providing the crotch narrowest position of the absorbent core, it is possible to suppress the leakage of the body fluid in the crotch region while allowing the outer side edge of the absorbent core to follow the shape of the thigh, and it is possible to further improve the wearing feeling. Further, the crotch narrowest position 41CN can be disposed at a position on the rear side of the center of the front-rear direction L of the wing fixing portion 62.

[0205] The body fixing portion 61 can be disposed on both sides of the width direction W of the absorbent article 1 across the center of the width direction W. In the width direction W, the outer side edge 41E of the absorbent core 41 of the crotch narrowest position 41CN can be disposed at a position on the inner side of the inner side edge 61I of the body fixing portion 61. If the absorbent article is pinched by the leg when worn, the absorbent article is pressed by the inner side of the thigh. At this time, the crotch narrowest position 41CN is disposed at a position on the inner side of the width direction W of the body fixing portion 61, and is not fixed to the wearing article S with the aid of the body fixing portion 61, and functions as a buffer region. Therefore, it is possible to make the abutment of the inner side of the thigh against the outer side edge 41E of the absorbent core 41 of the crotch narrowest position 41CN gentle, and it is possible to reduce the discomfort when worn. Further, by making the abutment of the absorbent core 41 of the crotch narrowest position 41CN gentle, it is possible to suppress the deformation of the absorbent core 41 of the crotch narrowest position 41CN, maintain the shape of the absorbent core 41, and suppress the discomfort caused by the deformation of the absorbent core.

[0206] Further, in the crotch region S3, the body fixing portion 61 can overlap with the absorbent core 41 in a region extending forward from the crotch narrowest position 41CN and in a region extending rearward from the crotch narrowest position 41CN, respectively. Therefore, even if the outer side edge 41E of the absorbent core 41 of the crotch narrowest position 41CN is not fixed to the wearing article with the aid of the body fixing portion 61, it is possible to fix the absorbent core on the front side and the rear side with respect to the crotch narrowest position 41CN, and it is possible to suppress the deformation of the absorbent core of the crotch narrowest position 41CN.

[0207] The position in the width direction W in the front region S1 can vary for the outer side edge 41E of the absorbent core 41. The absorbent core 41 can be provided with a front narrowest position 41FN in which the length of the absorbent core in the width direction is shortest in a region in which the absorbent core narrows toward the inside in the width direction in the front region S1, and a front widest position 41FM in which the length of the absorbent core 41 in the width direction W is longest in the front region S1. Further, the front narrowest position 41FN can be located at a position that is further out in the width direction than the crotch narrowest position 41CN. The front widest position 41FM can be located at a position that is further out in the width direction than the crotch widest position 41CM. The front widest position 41FM can be a position of the maximum width of the absorbent core. The front widest position 41FM can be disposed at a position that is further forward than the front end edge of the main body fastening portion 61. According to the present structure, the force transmitted through the main body fastening portion 61 can be cut off at the front widest position 41FM, and it is easy to secure the length in the width direction of the front end portion of the absorbent article. In view of the influence of the pubic bone, the front end portion of the absorbent article is not easily pushed in toward the inside in the width direction by the leg. Therefore, by securing the length in the width direction of the front end portion of the absorbent body, it is possible to secure the absorbent capacity of the absorbent body. Further, since the front widest position 41FM is not fastened to the wearing article S, it is not easy for a force to be transmitted from the wearing article, it is easy to secure the length in the width direction of the front widest position 41FM, and it is possible to secure the absorbent capacity of the absorbent body.

[0208] The front narrowest position 41FN can be separated from the junction of the front region S1 and the crotch region S3 in the front-rear direction L. The force and deformation pressed in the crotch region S3 is transmitted from the crotch region S3 to the front region S1. At this time, the front narrowest position 41FN is separated from the junction of the front region S1 and the crotch region S3, and it is not easy for a force and deformation from the crotch region S3 side to be transmitted. Therefore, it is possible to suppress the deformation of the absorbent core 41 of the front narrowest position 41FN, maintain the shape of the absorbent core, and it is possible to suppress the feeling of discomfort caused by the deformation of the absorbent core. The distance between the front narrowest position 41FN and the junction of the front region S1 and the crotch region S3 can be 5 mm or more, and preferably, it can be 10 mm or more.

[0209] The maximum width of the absorbent core 41 in the front outer region S11 can be longer than the maximum width of the absorbent core 41 in the front inner region S12. According to the present structure, the deformation of the absorbent core is suppressed by cutting off the force and deformation from the crotch region side in the front inner region S12, and the width of the absorbent core 41 in the front outer region S11 is secured, and it is possible to suppress the front leakage. In the present embodiment, the front narrowest position 41FN is disposed in the front inner region S12, and the front widest position 41FM is disposed in the front outer region S11.

[0210] The absorbent core 41 can also be disposed in the crotch region S3 and the front region S1, respectively, but is preferably disposed across the crotch region S3 and the front region S1. In a region extending to both outer sides in the front-and-rear direction L from the boundary between the front region S1 and the crotch region S3, the outer side edges 41E of the absorbent core 41 can be curved. The force and deformation pressed in the crotch region S3 are transmitted from the crotch region S3 to the front region S1. At this time, the absorbent core 41 is disposed across the crotch region S3 and the front region S1, and the deformation of the absorbent article is suppressed by the absorbent core 41, making it easy to maintain the shape of the absorbent article. Furthermore, since the outer side edges 41E of the absorbent core 41 are disposed in a curved shape across the boundary between the crotch region S3 and the front region S1, the deformation and force are not easily transmitted directly, but are transmitted avoidingly. Thus, the deformation of the absorbent article 1 is suppressed, making it easy to maintain the shape of the absorbent article, and the feeling of discomfort caused by the deformation of the absorbent article can be suppressed.

[0211] The absorbent core can also be disposed in the crotch region S3 and the rear region S2, respectively, but is preferably disposed in the crotch region S3 and the rear region S2. The absorbent core 41 in the rear region S2 is provided with a low basis weight portion L41 disposed across both outer side edges in the width direction of the absorbent core 41, and the basis weight of the cellulose-based fiber of the absorbent core 41 is lower than the surrounding. According to this aspect, the low basis weight portion L41 extending in the width direction across both outer side edges of the absorbent core 41 can cut off the force and deformation from the crotch region S3 side, making it easy to maintain the shape of the rear end portion of the absorbent core 41. In addition, the low basis weight portion L41 can be a region in which less cellulose-based fiber is disposed than the surrounding, or a region in which no cellulose-based fiber (basis weight 0 g / m 3 ) is disposed.

[0212] The absorbent core 41 of the present embodiment has a first absorbent core 411 disposed across the front region S1, the crotch region S3, and the rear region S2, and a second absorbent core 412 disposed in the rear region S2 and separated from the first absorbent core 411 in the front-and-rear direction L. A low basis weight portion L41 is provided between the first absorbent core 411 and the second absorbent core 412. The first absorbent core 411 is separated from the front end edge of the absorbent body 40 and is located at a position more rearward than the front end edge of the absorbent body 40. The second absorbent core 412 is separated from the rear end edge of the absorbent body 40 and is located at a position more forward than the rear end edge of the absorbent body 40. The outer side edges of the first absorbent core 411 and the outer side edges of the second absorbent core 412 are each separated from the outer side edges of the absorbent body and are located at a position more inward in the width direction than the outer side edges of the absorbent body.

[0213] The maximum width of the absorbent core 41 in the rear outer region S21 can be shorter than the maximum width of the absorbent core 41 in the rear inner region S22. According to the present structure, by shortening the maximum width of the absorbent core 41 in the rear outer region S21, the absorbent core 41 easily conforms to the groove between the left and right buttocks, and leakage from the rear can be suppressed. On the other hand, since the maximum width of the absorbent core 41 in the rear inner region S22 is long, the width of the absorbent core 41 with respect to the perineal region is ensured, and leakage near the perineal region can be suppressed.

[0214] In the present embodiment, a portion of the first absorbent core 411, the low unit area weight portion L41, and a portion of the second absorbent core 412 are disposed in the rear inner region S22, and a portion of the second absorbent core 412 is disposed in the rear outer region S21. The rear widest position 41RM, which is the longest in length in the width direction W of the absorbent core 41 in the rear outer region S21, is provided in the rear outer region S21. The absorbent core at the rear widest position 41RM can suppress leakage from the rear. The rear widest position 41RM is provided in the second absorbent core 412. The position 412N, which is the shortest in length in the width direction W of the absorbent core in the region in which the absorbent core narrows toward the inside in the width direction in the second absorbent core 412, is provided in the rear outer region S21. At the position 412N, which is the shortest in length in the width direction W of the absorbent core in the second absorbent core 412, the absorbent core easily conforms to the groove between the left and right buttocks, and leakage from the rear can be further suppressed. The rear widest position 41RM can be disposed at a position further to the rear than the rear end edge of the main body fastening portion 61. According to the present structure, the force transmitted through the main body fastening portion 61 can be interrupted by the rear widest position 41RM, and the length in the width direction of the rear end portion of the absorbent article can be easily ensured. Furthermore, since the rear widest position 41RM is not fastened to the wearing article S, the force is easily transmitted from the wearing article, and the length in the width direction of the rear widest position 41RM can be easily ensured.

[0215] The outer edge 41E of the absorbent core 41 can be located further to the outside in the width direction than the outer edge of the rear treatment member 68. Since the absorbent core 41 is disposed at a position further to the outside in the width direction than the rear treatment member 68, the rear treatment member 68 does not easily come into contact with the wearer even in a posture in which the distance between the legs is short, such as when the legs are closed, and discomfort caused by the rear treatment member can be suppressed. Preferably, the outer edge 41E of the absorbent core 41 can be disposed at a position further to the outside in the width direction than the outer edge of the rear treatment member 68 in the entire region in the front-rear direction of the outer edge of the rear treatment member 68.

[0216] The main body compression portion 81 can be provided to the skin-side sheet 11, the absorbent core 41, and a core non-skin-side sheet disposed at a position closer to the non-skin side than the absorbent core 41. Here, the core non-skin-side sheet is a sheet disposed at a position closer to the non-skin side T2 than the absorbent core 41, and can be either the non-skin-side sheet 20 or the sheet 48 of the first absorbent sheet 451. In a configuration in which a plurality of core non-skin-side sheets are disposed, the main body compression portion 81 can be provided to at least one of the non-skin-side sheets. According to this configuration, since the absorbent core 41 is sandwiched by the skin-side sheet 11 and the core non-skin-side sheet, and the skin-side sheet, the core non-skin-side sheet, and the absorbent core are joined by the main body compression portion 81, the deformation of the absorbent core can be suppressed. The shape of the absorbent core is maintained, and the discomfort caused by the deformation of the absorbent core can be suppressed.

[0217] The main body compression portion 81 can have an outer side compression portion 811 disposed at a position closer to the outer side in the width direction W than the outer side edge 41E of the absorbent core 41. According to this configuration, when a force is applied from the outer side in the width direction W toward the inner side, the outer side compression portion 811 is deformed with the outer side compression portion 811 as a fulcrum or the force is dispersed in the planar direction with the outer side compression portion 811, and thus the force applied to the outer side edge 41E of the absorbent core 41 can be reduced. The shape of the absorbent core 41 is easily maintained, and the discomfort caused by the deformation of the absorbent core 41 can be reduced. The outer side compression portion 811 can be provided in the crotch region S3, the front side region S1, and the back side region S2. According to this configuration, the deformation of the absorbent core 41 is suppressed against the force received from the outer side in the width direction W in the entire region in the front-back direction L of the absorbent core 41, and the shape of the absorbent core 41 is easily maintained.

[0218] The main body compression portion 81 can have an inner side compression portion 812 disposed at a position closer to the outer side in the width direction W than the outer side edge 41E of the absorbent core 41. The inner side compression portion 812 is disposed so as to overlap the absorbent core 41. The deformation of the absorbent core 41 is suppressed by the inner side compression portion 812, the shape of the absorbent core 41 is easily maintained, and the discomfort caused by the deformation of the absorbent core can be reduced. Further, the outer side compression portion 811 and the inner side compression portion 812 can be connected. That is, the main body compression portion 81 can be disposed across the outer side edge 41E of the absorbent core 41. The shape of the absorbent core 41 is easily maintained by the main body compression portion 81, and the discomfort caused by the deformation of the absorbent core can be reduced.

[0219] (7) 5th feature of the absorbent article

[0220] Next, the fifth feature of the absorbent article will be described in detail. The absorbent article 1 of the fifth feature is configured to suppress deterioration of the wearing feeling when absorbing body fluids and to secure a space in which the superabsorbent polymer 44 swells, thereby enabling effective use of the absorption capacity. The absorbent article 1 of the fifth feature has at least a first absorbent sheet 451 and a second absorbent sheet 452. The first absorbent sheet 451 has a first compressed portion 471 in which a plurality of pieces 48 are compressed in a direction in which the pieces face each other from an outer surface in the thickness direction T of the first absorbent sheet 451 toward the inside. Here, the outer surface in the thickness direction T of the first absorbent sheet 451 is both the non-skin side surface and the skin side surface of the first absorbent sheet. In other words, the first compressed portion 471 is a portion in which the plurality of pieces 48 are compressed in a direction in which the non-skin side surface and the skin side surface of the first absorbent sheet 451 face each other. The second absorbent sheet 452 has a second compressed portion 472 in which a plurality of pieces 48 are compressed in a direction in which the pieces face each other from an outer surface in the thickness direction of the second absorbent sheet toward the inside. Here, the outer surface in the thickness direction T of the second absorbent sheet 452 is both the non-skin side surface and the skin side surface of the second absorbent sheet. In other words, the second compressed portion 472 is a portion in which the plurality of pieces 48 are compressed in a direction in which the non-skin side surface and the skin side surface of the second absorbent sheet 452 face each other.

[0221] The first compressed portion 471 and the second compressed portion 472 are portions in which the pieces are pressed against each other in the facing direction, and the distance between the pieces 48 is shorter than in regions in which no compressed portion is formed. The first compressed portion 471 and the second compressed portion 472 are concepts that include the piece compression portion 46. The piece compression portion 46 is a portion in which the absorbent sheet is compressed in the thickness direction, and more specifically, a portion in which the pieces 48 abut against each other and the fibers that constitute the pieces 48 are joined by fusion. In contrast, the first compressed portion 471 and the second compressed portion 472 include not only a structure in which the pieces 48 abut against each other but also a structure in which the pieces 48 do not abut against each other. Furthermore, the first compressed portion 471 and the second compressed portion 472 are portions in which the thickness of the pieces 48 is reduced by compression of the pieces, and the fibers that constitute the pieces 48 can not be fused. As shown in FIG. 1, the first compressed portion 471 of the present embodiment is constituted by a first piece compression portion 461, and the second compressed portion 472 is constituted by a second piece compression portion 462. Figure 9

[0222] Figure 7 is a plan view of the absorbent sheet 45. Figure 7 (a) of FIG. 1 is a plan view of the first absorbent sheet 451, Figure 7 ​(b) is a top view of the second absorber sheet 452. The first absorber sheet 451 and the second absorber sheet 452 can both be arranged across the center 40CW in the width direction of the absorber 40. In the top view of the absorber sheet 45, multiple first compression portions 471 and second compression portions 472 are arranged at intervals in the front-rear direction L and the width direction W. Multiple first compression portions 471 and second compression portions 472 are arranged on both sides of the center 40CW in the width direction of the absorber 40. The first compression portions 471 and second compression portions 472 only need to be arranged at intervals; their shape can be either dotted or other patterns (e.g., star patterns, heart patterns). The first compression portions 471 and second compression portions 472 can be arranged in an alternating pattern as in this embodiment, or they can be arranged at intervals along the front-rear direction L, or they can be arranged at intervals along the width direction W.

[0223] like Figure 9 As shown, a non-overlapping region NR is provided in the crotch region S3, where the first compression portion 471 and the second compression portion 472 do not overlap in the thickness direction T. The non-overlapping region NR includes: a first non-overlapping region where the region in the first absorbent sheet 451 where the first compression portion 471 is located overlaps with the region in the second absorbent sheet 452 where the second compression portion 472 is not located; a second non-overlapping region where the region in the first absorbent sheet 451 where the first compression portion 471 is not located overlaps with the region in the second absorbent sheet 452 where the second compression portion 472 is located overlaps with the region in the first absorbent sheet 452 where the first compression portion 471 is not located overlaps with the region in the second absorbent sheet 452 where the second compression portion 472 is not located; and a third non-overlapping region where the region in the first absorbent sheet 451 where the first compression portion 471 is not located overlaps with the region in the second absorbent sheet 452 where the second compression portion 472 is not located. In other words, the non-overlapping region NR is the region other than the overlapping portion of the first compression portion 471 and the second compression portion 472. In the absorbent article of the fifth feature, as long as at least one of the first to third non-overlapping regions is provided in the crotch region S3, a region other than the non-overlapping region NR (the region where the first compression part 471 and the second compression part 472 overlap) may be provided locally. Preferably, the area of ​​the non-overlapping region NR of the crotch region S3 may be smaller than the area of ​​the region of the crotch region S3 other than the non-overlapping region NR.

[0224] In the region in which the first compression portion 471 and the second compression portion 472 overlap, it is possible that the rigidity locally increases, and unintentional deformation or discomfort occurs based on the portion. However, by providing the non-overlapping region NR, the condition in which the rigidity locally increases is suppressed, unintentional deformation based on the portion in which the rigidity is high is suppressed, and discomfort caused by the portion in which the rigidity is high can be suppressed. Further, the first compression portion 471 and the second compression portion 472 are arranged at a plurality of positions spaced apart in the front-and-rear direction L and the width direction W in the plan view of the absorbent sheet 45, and even in the case in which the first compression portion 471 and the second compression portion 472 overlap, the region in which they overlap is arranged at a plurality of positions spaced apart, unlike the conventional configuration in which the region in which the high-absorbency polymer is arranged is divided and arranged. Thus, the condition in which the region in which the high-absorbency polymer 44 swells is difficult to bend is less likely to occur, deterioration of the followability is suppressed, and the wearing feeling can be improved. Further, since the deformation bases formed by the first compression portion 471 and the second compression portion 472 are arranged at a plurality of positions spaced apart in the plan view, it is easy to deform softly using the deformation bases, the followability to the body is improved, and deterioration of the wearing feeling when absorbing body fluid can be suppressed.

[0225] Further, in the non-overlapping region NR, since at least one of the first compression portion 471 and the second compression portion 472 is not arranged in the thickness direction T, it is easy to secure a space in which swelling occurs in the thickness direction T, and the absorbent capacity can be effectively used. Further, since the first compression portion 471 and the second compression portion 472 are arranged at a plurality of positions spaced apart in the front-and-rear direction L and the width direction W, the portions in which the sheets are close to each other by the first compression portion 471 and the second compression portion 472 are not formed in a line shape from one end to the other end of the absorbent sheet 45, and thus the high-absorbency polymer 44 is easy to swell in the entire range in the plan view of the absorbent sheet 45, and the absorbent capacity can be effectively used.

[0226] The first compression portion 471 and the second compression portion 472 can be constituted by the sheet compression portion 46. According to this configuration, since the sheets 48 are joined to each other by the compression portion, the joining of the sheets 48 to each other by the sheet compression portion 46 is easy to open when the high-absorbency polymer 44 swells, compared to the configuration in which the sheets are joined to each other by heat sealing, HMA, or the like, a space in which the high-absorbency polymer 44 swells is secured, and the absorbent capacity can be effectively used.

[0227] The first non-overlapping region, the second non-overlapping region, and the third non-overlapping region can be provided in the non-overlapping region NR. In the first non-overlapping region, the high-absorbency polymer 44 of the second absorbent sheet 452 is easily swelled and easily expands toward the skin side Tl upon absorption of body fluid. In the second non-overlapping region, the high-absorbency polymer 44 of the first absorbent sheet 451 is easily swelled and easily expands toward the non-skin side T2 upon absorption of body fluid. In the first non-overlapping region and the second non-overlapping region, the first absorbent sheet 451 and the second absorbent sheet 452 are easily expanded in opposite directions in the thickness direction T, respectively, and each region does not interfere and is easily ensured to be a swelled region. The third non-overlapping region is easily expanded toward both the skin side Tl and the non-skin side T2 upon absorption of body fluid, and is more easily ensured to have an absorption capacity. By providing the first non-overlapping region, the second non-overlapping region, and the third non-overlapping region, the high-absorbency polymer 44 is more easily swelled, and it is further possible to effectively use the absorption capacity.

[0228] The shortest distance between the first compressed portions 471 and the shortest distance between the second compressed portions 472 in the plan view of the absorbent sheet 45 can be longer than the average value of the diameters of the high-absorbency polymer 44 in a state of being immersed in physiological saline for 60 minutes and being drained for 15 minutes and then being dehydrated by a centrifugal separator. The regions between the first compressed portions 471 and the regions between the second compressed portions 472 are regions that are not pressed by the compressed portions, and are regions in which the inter-fiber voids are large and the high-absorbency polymer 44 is easily swelled. Since the length in the plan view of the easily swelled region is longer than the average diameter of the high-absorbency polymer 44 after swelling, the high-absorbency polymer 44 is easily swelled, and it is more easily possible to effectively use the absorption capacity.

[0229] Here, the shortest distance between the first compression portions 471 and the shortest distance between the second compression portions 472 are average values obtained by randomly measuring the intervals between the compression portions in a plan view at 10. Further, the state of being immersed in physiological saline for 60 minutes and being dewatered by a centrifugal separator for 15 minutes after the draining is a state that simulates a water-retaining state of a body fluid (urine) of the superabsorbent polymer 44, and is the "water-retaining time" of the present application. The average value of the diameter of the superabsorbent polymer in the state of being immersed in physiological saline for 60 minutes and being dewatered by a centrifugal separator for 15 minutes after the draining can be measured by the following method. First, under conditions of temperature: 20°C, relative humidity: 60%, pressure (standard atmospheric pressure): 1 atm (101.325 kPa) (for example, in a laboratory kept at these conditions), the superabsorbent polymer to be measured is taken out from the absorbent article (for example, 0.1 g). The superabsorbent polymer is stored in a predetermined container and shaken upside down 10 times or more to mix the particles of the superabsorbent polymer uniformly. Using a medicine spoon or the like, 1.00 g of the mixed superabsorbent polymer is accurately measured and put into a nylon mesh bag prepared separately. The nylon mesh bag can be formed, for example, by overlapping two 200 mm x 200 mm square nylon meshes, heat-sealing the meshes at a position 5 mm from the ends of the square nylon meshes for three sides of the square, and molding into a bag shape with only one side of the square open. As the nylon mesh, for example, a 250-mesh nylon mesh (N-No. 250 HD) manufactured by NBC Industries can be used. After the superabsorbent polymer is put into the nylon mesh bag, the opening of the nylon mesh bag is heat-sealed to enclose the superabsorbent polymer without spilling out of the nylon mesh bag. Then, 1000 ml of physiological saline is added to a beaker, and the nylon bag (superabsorbent polymer) is immersed in the physiological saline to a degree that one side of the nylon bag in which the superabsorbent polymer is enclosed contacts the bottom of the beaker. Then, to prevent the superabsorbent polymer and the nylon mesh from being tightly attached to each other as much as possible, the upper one side of the nylon bag is fixed to the edge of the beaker using a clothes hanger or the like. This state is left for 60 minutes. The physiological saline used is obtained by placing a 3-liter beaker on an electronic balance and zeroing, then adding ion exchange water to 27.0 g of sodium chloride (reagent grade 1) to 3000.0 g, and stirring with a stirrer until the sodium chloride is visually dissolved. After being left for 60 minutes, the nylon bag in which the superabsorbent polymer is enclosed is taken out of the beaker, left for 15 minutes in a state of being hung in the air with the central upper part of the nylon bag (for example, a position 5 mm from the upper end of the nylon bag and 50 mm from both side ends) gripped with a clothes hanger, and drained. Next, the nylon bag (superabsorbent polymer) after the draining is dewatered using a centrifugal separator (HI30) manufactured by Kokusan Co., Ltd. of Japan. For example, dewatering is performed at a rotation speed of 850 rpm (150 G) for 90 seconds. Then, the diameter of the superabsorbent polymer is also measured using a microscope.The average value is the value measured by averaging 30 diameters. The superabsorbent polymer 5 times from the same product was taken as a sample, and the average value of the 5 times of measurement was taken as the final value.

[0230] It is preferable that the shortest distance between the first compression portions 471 in the plan view of the absorbent sheet 45 and the shortest distance between the second compression portions 472 be longer than the average value of the diameters of the superabsorbent polymer 44 in a state of being immersed in physiological saline for 60 minutes and being drained for 15 minutes (a state of not being dehydrated using a centrifugal separator).

[0231] The maximum size of the first compression portions 471 and the maximum size of the second compression portions 472 in the plan view of the absorbent sheet can be longer than the average value of the diameters of the superabsorbent polymer in a state of being dehydrated using a centrifugal separator after being immersed in physiological saline for 60 minutes and being drained for 15 minutes. The maximum size of the first compression portions 471 and the maximum size of the second compression portions 472 are the maximum sizes in the plan view of each compression portion. The measurement is performed at 5 places of the sample, and the average value is taken. According to the present aspect, the maximum size of the first compression portions 471 and the maximum size of the second compression portions 472 are smaller than the average diameter of the superabsorbent polymer 44 when retaining water, and the influence of the first compression portions 471 and the second compression portions 472 when the superabsorbent polymer 44 retains water is suppressed, and the superabsorbent polymer 44 is easily expanded in the entire range in the plan view of the absorbent sheet 45.

[0232] The absorbent article 1 can be formed with a sheet joint portion that compresses and joins the first absorbent sheet 451 and the second absorbent sheet 452 in the thickness direction T and is arranged at intervals in the front-and-rear direction L and the width direction W in the plan view of the absorbent sheet 45. The first absorbent sheet 451 and the second absorbent sheet 452 can be directly compressed and joined, or other constituent members (for example, the skin-side sheet 11) other than the first absorbent sheet 451 and the second absorbent sheet 452 can be compressed, and the first absorbent sheet 451 and the second absorbent sheet 452 can be indirectly joined. The sheet joint portion of the present embodiment is constituted by the compression-constituting portion 82.

[0233] In a plan view of the absorbent sheet 45, the maximum dimension of the sheet joint portion (the compression-constituting portion 82) can be larger than the maximum dimensions of the first compression portion 471 and the second compression portion 472. According to the present structure, since the maximum dimension of the sheet joint portion is relatively large, it is easy to maintain the joint state of the first absorbent sheet 451 and the second absorbent sheet 452, and to suppress misalignment of the absorbent sheets 45 from each other, and it is possible to ensure the non-overlapping region NR. Further, since the maximum dimensions of the first compression portion 471 and the second compression portion 472 are relatively small, it is possible to suppress the influence of the first compression portion 471 and the second compression portion 472 when the superabsorbent polymer 44 is water-retained, and the superabsorbent polymer 44 is easy to swell in the entire range in the plan view of the absorbent sheet 45.

[0234] In the width direction W, the outer side edge 41E of the absorbent core 41 can be located at a position that is more inward than the outer side edge 45E of the absorbent sheet 45. According to the present structure, since the absorbent core 41 does not overlap with the outer side portions of the absorbent sheet 45, the outer side portions of the absorbent sheet 45 are easy to swell when absorbing body fluid, and it is possible to effectively utilize the absorbent capacity. It is preferable that the outer side edge 41E of the absorbent core 41 can be located at a position that is more inward in the width direction W than the outer side edge 451E of the first absorbent sheet 451 and at a position that is more inward in the width direction W than the outer side edge 452E of the second absorbent sheet 452. The outer side portions of the first absorbent sheet 451 and the second absorbent sheet 452 are both easy to swell in the thickness direction, and it is possible to further effectively utilize the absorbent capacity.

[0235] In the width direction, the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 can be misaligned. According to the present structure, since the outer side edge 451E of the first absorbent sheet 451 and the outer side edge 452E of the second absorbent sheet 452 are misaligned, one absorbent sheet is arranged at the outer side portions of the absorbent sheet 45, instead of two absorbent sheets. The outer side portions of the absorbent sheet are suppressed in thickness by arranging one absorbent sheet, and it is possible to reduce the rigidity. The outer side portions of the absorbent sheet are easy to bend, which helps to reduce the feeling of discomfort, and the portions are easy to swell when absorbing body fluid, and it is possible to effectively utilize the absorbent capacity.

[0236] The absorbent core 41 can be arranged across the center 40CW of the width direction of the absorbent article 1. The first absorbent sheet 451 can be arranged at a position that is more on the non-skin side T2 than the absorbent core 41. According to the present structure, the absorbent core 41 is arranged across the center of the width direction W of the absorbent article 1 at a position that is more on the skin side T1 than the first absorbent sheet 451, and it is easy to absorb body fluid discharged from the discharge port. The first absorbent sheet 451 is arranged at a position that is more on the non-skin side T2 than the absorbent core 41, and body fluid guided to the absorbent core 41 is further drawn toward the non-skin side T2, and it is easy to retain body fluid with the absorbent core 41 even in the case of repeatedly discharging body fluid.

[0237] The second absorbent sheet 452 can be disposed at a position closer to the skin side T1 than the absorbent core 41. According to the present structure, the second absorbent sheet 452 disposed at a position closer to the skin side T1 than the absorbent core 41 swells when absorbing body fluid, and thus re-wetting caused by movement of temporarily absorbed body fluid to the skin side T1 can be suppressed. Furthermore, body fluid that spreads in the planar direction is absorbed on the surface side of the absorbent article 1, and transmission leakage of the body fluid can be suppressed.

[0238] The absorbent sheet 45 can contain the high-absorbency polymer 44 and the cellulose-based fiber. By the presence of the cellulose-based fiber, a condition in which the high-absorbency polymer 44 unintentionally flows can be suppressed, and the high-absorbency polymer 44 can be disposed in the entire range in the plan view of the absorbent sheet 45. The unit area weight of the cellulose-based fiber of the absorbent sheet 45 can be smaller than the unit area weight of the high-absorbency polymer 44 of the absorbent sheet 45. Since the unit area weight of the cellulose-based fiber is relatively low and the unit area weight of the high-absorbency polymer 44 is relatively high, the thickness of the entire absorbent sheet 45 can be suppressed while ensuring the absorption capacity. By suppressing the thickness of the entire absorbent sheet 45, the followability of the absorbent sheet 45 to the body can be improved, and the sense of discomfort when worn can be suppressed.

[0239] The liquid spreading property in the planar direction of the sheet 48 constituting the first absorbent sheet 451 can be higher than the liquid spreading property in the planar direction of the sheet 48 constituting the second absorbent sheet 452. According to the present structure, the liquid spreading property in the planar direction of the second absorbent sheet 452 located on the skin side T1 is relatively low, and the body fluid does not excessively spread in the planar direction in the second absorbent sheet 452, and the retardation caused by swelling of the high-absorbency polymer 44 of the second absorbent sheet 452 can be suppressed. On the other hand, the liquid spreading property in the planar direction of the first absorbent sheet 451 located on the non-skin side T2 is relatively high, and the body fluid is absorbed toward the non-skin side T2, and the absorbed body fluid spreads to a wider range, the liquid spreading property in the thickness direction T and the planar direction is improved, and the absorption capacity can be effectively utilized.

[0240] In addition, the liquid spreading property can be compared in terms of the Gurley water absorption. The longitudinal direction (set to the direction of a length of 200 mm or more) of the test sheet at the time of measurement of the Gurley water absorption is extracted along the front-back direction L of the sheet of the measurement object, and the Gurley water absorption is measured, and the one having a longer length is determined to have a higher liquid spreading property. The Gurley water absorption can be measured by a method according to JIS P8141:2004.

[0241] The above has explained the present application in detail using the above-described embodiments, but it is clear to those skilled in the art that the present application is not limited to the embodiments described in the specification. The present application can be implemented in modified and changed forms without departing from the gist and scope of the present application defined by the claims. Thus, the description in the specification is for the purpose of illustrative explanation and does not have any limiting meaning for the present application. The above-described first to fifth features can be appropriately combined. For example, the absorbent article can have the first feature and the second to fifth features at the same time.

Claims

1. An absorbent article comprising: a front-rear direction, a width direction, and a thickness direction orthogonal to each other; a crotch region configured to a crotch of a wearer, a front region located at a position more forward than the crotch region, and a rear region located at a position more rearward than the crotch region; and an absorbent body configured at least to the crotch region, characterized in that the absorbent body has an absorbent sheet covering a skin side and a non-skin side of a superabsorbent polymer in the thickness direction, the absorbent sheet has a first absorbent sheet and a second absorbent sheet configured at a position more toward the skin side than the first absorbent sheet, the first absorbent sheet has a first compressed portion in which the sheets covering the skin side and the non-skin side of the superabsorbent polymer are compressed toward the inside from the outer surface in the thickness direction of the first absorbent sheet in a direction in which they face each other, the second absorbent sheet has a second compressed portion in which the sheets covering the skin side and the non-skin side of the superabsorbent polymer are compressed toward the inside from the outer surface in the thickness direction of the second absorbent sheet in a direction in which they face each other, the first compressed portion and the second compressed portion are configured with a plurality of spaces in the front-rear direction and the width direction when viewed from the top of the absorbent sheet, a non-overlapping region in which the first compressed portion and the second compressed portion do not overlap in the thickness direction is provided at least in the crotch region.

2. The absorbent article according to claim 1, characterized in that in the non-overlapping region, a first non-overlapping region in which a region in which the first compressed portion is provided in the first absorbent sheet and a region in which the second compressed portion is not provided in the second absorbent sheet overlap, a second non-overlapping region in which a region in which the first compressed portion is not provided in the first absorbent sheet and a region in which the second compressed portion is provided in the second absorbent sheet overlap, and a third non-overlapping region in which a region in which the first compressed portion is not provided in the first absorbent sheet and a region in which the second compressed portion is not provided in the second absorbent sheet overlap are provided.

3. The absorbent article according to claim 1 or 2, characterized in that the shortest distance between the first compressed portions and the shortest distance between the second compressed portions of the absorbent sheet when viewed from the top are longer than the average of the diameters of the superabsorbent polymer in a state in which dehydration is performed using a centrifugal separator after immersion in physiological saline for 60 minutes and drainage for 15 minutes.

4. The absorbent article according to claim 1 or 2, characterized in that the maximum dimension of the first compressed portions and the maximum dimension of the second compressed portions of the absorbent sheet when viewed from the top are longer than the average of the diameters of the superabsorbent polymer in a state in which dehydration is performed using a centrifugal separator after immersion in physiological saline for 60 minutes and drainage for 15 minutes.

5. The absorbent article according to claim 1 or 2, characterized in that ​ ​ ​ The absorbent article is formed with a sheet joint portion that compresses and joins the first and second absorbent sheets in the thickness direction, and is arranged in a spaced-apart manner in the front-rear direction and the width direction when viewed from above the absorbent sheets, The maximum dimension of the sheet joint portion is greater than the maximum dimensions of the first and second compressed portions when viewed from above the absorbent sheets.

6. The absorbent article according to claim 1 or 2, wherein the absorbent body has an absorbent core in which at least cellulose-based fibers are layered, the outer side edge of the absorbent core is positioned inward of the outer side edge of the absorbent sheet in the width direction.

7. The absorbent article according to claim 6, wherein the absorbent core is arranged across the center of the width direction of the absorbent article, the first absorbent sheet is arranged on the non-skin side of the absorbent core.

8. The absorbent article according to claim 6, wherein the second absorbent sheet is arranged on the skin side of the absorbent core.

9. The absorbent article according to claim 1 or 2, wherein the outer side edge of the first absorbent sheet and the outer side edge of the second absorbent sheet are offset in the width direction.

10. The absorbent article according to claim 1 or 2, wherein cellulose-based fibers and the high-absorbency polymer are arranged simultaneously between the sheets of the absorbent sheet, the unit area weight of the cellulose-based fibers of the absorbent sheet is less than the unit area weight of the high-absorbency polymer of the absorbent sheet. ​ ​ ​ ​ ​

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