Absorbent article

Abstract

To provide an absorbent article that can make it easy to swell an absorbent core between a pair of compression grooves to a skin surface side and make it difficult to generate width reduction of the absorbent core on a width direction outer side than the pair of compression grooves.SOLUTION: An absorbent article (1) includes an absorbent core (30) and compression grooves (40) where at least the absorbent core is compressed in a thickness direction, the grooves extending in a back and forth direction. The compression grooves include a pair of first compressed grooves (41) and a pair of second compression grooves (42) where the absorbent core is compressed from a skin surface side to a non-skin surface side, which is disposed on a width direction outer side of the absorbent article than the pair of first compression grooves. The absorbent core includes a first absorbent core part (311), which is a part positioned on the non-skin surface side of the first compression grooves and a second absorbent core part (312), which is a part positioned on the non-skin surface side of the second compression grooves. A non-skin surface (311n) of the first absorbent core part is a part of the absorbent core and is positioned more on the non-skin surface side than a non-skin surface (351n) of a non-compressed part (35), which is separated in the width direction from the compression grooves, and is positioned closer to the non-skin surface side than a non-skin surface (312n) of the second absorbent core part.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an absorbent article having a squeezing groove in which an absorption core is squeezed in the thickness direction.

Background Art

[0002] Absorbent articles having an absorption core squeezed in the thickness direction and having squeezing grooves extending in the front-rear direction are widely known (see, for example, Patent Document 1). Specifically, in the central region in the front-rear direction including the region facing the excretory opening of the wearer, the absorption core is squeezed from the skin side to the non-skin side, and a pair of squeezing grooves are provided so as to sandwich the center in the width direction of the absorbent article. The absorption core between the pair of squeezing grooves of such an absorbent article (hereinafter, appropriately referred to as the inner absorption core portion) may be deformed with the squeezing groove as a base point and bulge toward the skin side when, for example, the absorbent article is sandwiched between the wearer's legs and receives a force toward the inner side in the width direction. Since the inner absorption core portion approaches the excretory opening of the wearer, the absorbent article can easily absorb excrement quickly.

[0003] Further, the absorption core of the squeezing groove is more rigid than the absorption core around the squeezing groove. Therefore, the absorption core of the squeezing groove is difficult to be compressed in the width direction even when receiving a force toward the inner side in the width direction, and the width entry of the inner absorption core portion can be suppressed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, conventional absorbent articles have had the following problems. When the inner absorbent core portion receives a force directed inward in the width direction, the absorbent core may bulge toward the non-skin side rather than the skin side. In this case, since the inner absorbent core portion moves away from the wearer's excretory opening, the absorbent article may not be able to quickly absorb excrement.

[0006] Also, when the absorbent core receives a force directed inward in the width direction, there has been a problem that the width entry of the absorbent core outside the width direction from the squeezing groove serving as the deformation base point is likely to occur.

[0007] The present invention has been made in view of such problems, and provides an absorbent article capable of easily bulging the absorbent core between a pair of squeezing grooves toward the skin side and making it difficult for the width entry of the absorbent core outside the width direction from the pair of squeezing grooves to occur.

Means for Solving the Problems

[0008] An absorbent article according to one aspect has a longitudinal direction, a width direction, and a thickness direction, a front side region, a central region, and a rear side region, front and rear regions sandwiching the central region in the longitudinal direction, an absorbent core, and at least squeezing grooves in which the absorbent core is squeezed in the thickness direction and extends in the longitudinal direction. The squeezing grooves are disposed at least in the central region. The squeezing grooves include a pair of first squeezing grooves disposed such that the absorbent core is squeezed from the skin side to the non-skin side and sandwiches the center of the absorbent core in the width direction, and a pair of second squeezing grooves disposed such that the absorbent core is squeezed from the skin side to the non-skin side and is outside the width direction of the absorbent article from the pair of first squeezing grooves. The absorbent core has a first absorbent core portion that is a portion located on the non-skin side of the first squeezing groove and a second absorbent core portion that is a portion located on the non-skin side of the second squeezing groove. The non-skin surface of the first absorbent core portion is located on the non-skin side of the non-skin surface of a non-squeezed portion that is a part of the absorbent core and is separated from the squeezing groove in the width direction, and is located on the non-skin side of the non-skin surface of the second absorbent core portion.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

MODE FOR CARRYING OUT THE INVENTION

[0010] (1) Outline of the Embodiment From the description of this specification and the accompanying drawings, at least the following matters become clear. The absorbent article according to Aspect 1 has a longitudinal direction, a width direction, and a thickness direction, a front side region, a central region, and a rear side region, front and rear regions sandwiching the central region in the longitudinal direction, an absorbent core, and at least a squeezing groove in which the absorbent core is squeezed in the thickness direction and extends in the longitudinal direction. The squeezing groove is disposed at least in the central region. The squeezing groove has a pair of first squeezing grooves arranged such that the absorbent core is squeezed from the skin side to the non-skin side and sandwiches the center of the absorbent core in the width direction, and a pair of second squeezing grooves arranged such that the absorbent core is squeezed from the skin side to the non-skin side and is disposed outside the absorbent article in the width direction than the pair of first squeezing grooves. The absorbent core has a first absorbent core portion that is a portion located on the non-skin side of the first squeezing groove and a second absorbent core portion that is a portion located on the non-skin side of the second squeezing groove. The non-skin surface of the first absorbent core portion is located on the non-skin side of the non-squeezing portion that is a part of the absorbent core and is separated from the squeezing groove in the width direction, and is located on the non-skin side of the non-skin surface of the second absorbent core portion. Since the non-skin surface of the first absorbent core portion is located on the non-skin side of the non-squeezing portion of the non-skin surface, at least a part of the first absorbent core portion is located on the non-skin side of the absorbent core (i.e., the inner absorbent core portion) between the pair of first squeezing grooves. Therefore, when the first absorbent core portion receives a force toward the inner side in the width direction and moves inward in the width direction, it is easy to push up the inner absorbent core portion from the non-skin side to the skin side. As a result, the inner absorbent core portion can be easily raised to the skin side, and the center of the width direction W of the absorbent article can be fitted to the wearer's excretory opening. Here, since the non-skin surface of the first absorbent core portion is located on the non-skin side of the non-skin surface of the second absorbent core portion, at least a part of the first absorbent core portion is located more on the non-skin side than the second absorbent core portion. Therefore, when the absorbent core receives a force toward the inner side in the width direction, the first absorbent core portion is more likely to push up the absorbent core on the inner side in the width direction than the second absorbent core portion. As a result, the absorbent core is more likely to be deformed with the first squeezing groove as a base point than the second squeezing groove, and the intended deformation of the absorbent core can be realized. Also, the second squeezing groove is disposed outside the first squeezing groove in the width direction. Therefore, when the absorbent core receives a force toward the inner side in the width direction, the width entry of the absorbent core between the first squeezing groove and the second squeezing groove can be suppressed.As a result, it is possible to make it difficult to generate the width of the absorbent core outside the width direction from the first squeezing groove serving as the deformation reference point, and it is possible to suppress lateral leakage of excrement. In this way, it is possible to achieve both the fit in the center in the width direction of the absorbent article and the suppression of lateral leakage of excrement.

[0011] According to a preferred aspect, the invention according to aspect 2 may have the following features in the invention according to aspect 1. At least a portion of the first squeezing groove disposed in the central region extends linearly along the front-rear direction. Since the position in the width direction of the first squeezing groove is the same at least in the central region, when the absorbent core receives a force toward the inner side in the width direction in the central region, the force does not concentrate locally on the first squeezing groove, but the force is likely to be applied to the entire first squeezing groove. As a result, in the central region, it is possible to easily raise the inner absorbent core portion toward the skin surface side over a wide range, and the intended deformation of the absorbent core can be realized.

[0012] According to a preferred aspect, the invention according to aspect 3 may have the following features in the invention according to aspect 1 or 2. The first squeezing groove extends continuously or intermittently from the front edge to the rear edge of the absorbent core. Compared with the case where the first squeezing groove does not extend from the front edge to the rear edge of the absorbent core, when the absorbent core receives a force toward the inner side in the width direction, the first absorbent core portion is more likely to receive a force toward the inner side in the width direction. As a result, it is possible to easily raise the inner absorbent core portion toward the skin surface side, and the intended deformation of the absorbent core can be realized.

[0013] According to a preferred aspect, the invention according to aspect 4 may have the following features in the invention according to any one of aspects 1 to 3. The bottom surface of the first squeezing groove may be located on the non-skin surface side of the non-squeezing portion. Thereby, the entire first absorbent core portion is located on the non-skin surface side of the inner absorbent core portion of the non-squeezing portion. Therefore, when the first absorbent core portion receives a force toward the inner side in the width direction and moves inward in the width direction, it is easier to further push up the inner absorbent core portion from the non-skin surface side to the skin surface side. As a result, it is possible to easily raise the inner absorbent core portion toward the skin surface side.

[0014] According to a preferred embodiment, the invention according to aspect 5 may have the following features in the invention according to any one of aspects 1 to 4. In a plan view of the absorbent article, the second squeezing groove extends in a curved shape. Thereby, compared with the case where the second squeezing groove extends linearly along the front-rear direction, the widthwise distance between the position of the innermost inner edge and the position of the outermost outer edge of the second squeezing groove in the width direction becomes longer. Therefore, the widthwise length of the second squeezing groove can be ensured, and the widthwise entry of the absorbent core can be suppressed by the amount of the widthwise length compared with the linear second squeezing groove.

[0015] According to a preferred embodiment, the invention according to aspect 6 may have the following features in the invention according to any one of aspects 1 to 5. The bottom surface of the second squeezing groove may be located closer to the skin side than the non-skin surface of the non-squeezing portion. Thereby, at least a part of the second absorbent core portion is located closer to the skin side than the non-squeezing portion. Here, since the non-skin surface of the first absorbent core portion is located closer to the non-skin side than the non-skin surface of the second absorbent core portion, when the second absorbent core portion receives a force toward the inner side in the width direction, it becomes easier to move the absorbent core between the first squeezing groove and the second squeezing groove from the skin side toward the non-skin side. As a result, the first absorbent core portion is more likely to receive a force in the direction from the skin side toward the non-skin side, and the absorbent core is more likely to deform with the first squeezing groove as a reference than the second squeezing groove, and the intended deformation of the absorbent core can be realized.

[0016] According to a preferred embodiment, the invention according to Embodiment 7 may have the following features in the invention according to any one of Embodiments 1 to 6. In a plan view of the absorbent article, when the absorbent core is divided into four equal parts in the width direction, a pair of outer regions located on the outer side in the width direction and an inner region located between the pair of outer regions are provided. The central region has a central front region including a region in front of the center of the central region in the front-rear direction. At least a portion of the second squeezing groove that overlaps with the central front region in the width direction is located in each of the pair of outer regions. By the portion of the second squeezing groove disposed in the outer region, the occurrence of the width entry of the absorbent core in the outer region can be suppressed. Since the outer region is located more outward in the width direction than the inner region, it is possible to make it difficult for the width entry of the absorbent core to occur more outward in the width direction than the first squeezing groove serving as a deformation base point. A wide absorption area for excrement can be ensured on the outer side in the width direction of the central front region.

[0017] According to a preferred embodiment, the invention according to Embodiment 8 may have the following features in the invention according to any one of Embodiments 1 to 7. In a plan view of the absorbent article, when the absorbent core is divided into four equal parts in the width direction, a pair of outer regions located on the outer side in the width direction and an inner region located between the pair of outer regions are provided. The first squeezing groove is located in the inner region. The inner region corresponds to two of the absorbent cores divided into four equal parts in the width direction. Since the first squeezing groove is located in the inner region, the width of the inner absorbent core portion, which is the absorbent core between the first squeezing grooves, is less than half of the width of the absorbent core. Therefore, compared with the case where the width of the inner absorbent core portion is half or more of the width of the absorbent core, the inner absorbent core portion that bulges toward the skin side can be made smaller, and the range in which the absorbent core deforms with the first squeezing groove as a base point does not increase. Excessive deformation of the absorbent core can be prevented, and it is possible to make it difficult to give a sense of discomfort to the wearer. In addition, since the inner absorbent core portion is small, it is easy to enter under the crotch of the wearer. As a result, the inner absorbent core portion can be brought closer to the excretory opening of the wearer. Furthermore, a wider region can be secured on the outer side in the width direction than the first squeezing groove serving as a deformation base point. As a result, lateral leakage of excrement can be suppressed.

[0018] According to a preferred embodiment, the invention according to Embodiment 9 may have the following features in the invention according to any one of Embodiments 1 to 8. In the front-rear direction, the length of the first squeezing groove is longer than the length of the second squeezing groove. In the front-rear direction, the first squeezing groove is arranged in a wider range than the second squeezing groove. Also, the portion of the first squeezing groove where the second squeezing groove is not on the outer side in the width direction is liable to receive a force toward the inner side in the width direction. Thereby, it is possible to easily raise the inner absorption core portion toward the skin surface side in a wide range, and to realize the intended deformation of the absorption core.

[0019] According to a preferred embodiment, the invention according to Embodiment 10 may have the following features in the invention according to any one of Embodiments 1 to 9. The absorbent article has a topsheet that contacts the wearer. In the first squeezing groove, the topsheet is not squeezed. When forming the first squeezing groove so that the non-skin surface of the first absorption core portion is located on the non-skin surface side more than the non-skin surface of the non-squeezed portion, compared with the case where it is not so, it is necessary to squeeze strongly. However, when forming the first squeezing groove, since the topsheet is not squeezed, there is no risk of the topsheet being torn. As a result, even if the topsheet comes into contact with the discharge port due to the inner absorption core portion bulging toward the skin surface side, there is no tear of the topsheet caused by the formation of the first squeezing groove, and it is possible to hardly give a sense of discomfort to the wearer.

[0020] According to a preferred embodiment, the invention according to Embodiment 11 may have the following features in the invention according to any one of Embodiments 1 to 10. In a cross section of the absorbent article along the width direction and the thickness direction, the width of the first squeezing groove is wider than the thickness of the non-squeezed portion. Since the thickness of the absorption core portion adjacent to the first squeezing groove in the width direction is the same as or thinner than the thickness of the non-squeezed portion, when the absorption core deforms with the first squeezing groove as a base point, the absorption core portions adjacent to one side and the other side of the first squeezing groove in the width direction do not hit each other, and it is possible to hardly inhibit the deformation of the absorption core. As a result, it is possible to easily raise the inner absorption core portion toward the skin surface side, and to realize the intended deformation of the absorption core.

[0021] According to a preferred embodiment, the invention according to Embodiment 12 may have the following features in the invention according to any one of Embodiments 1 to 11. The squeezing groove may further have a third squeezing groove at least where the absorption core is squeezed from the non-skin surface side to the skin surface side and is disposed between the pair of first squeezing grooves in the width direction. Thereby, a portion located on the non-skin surface side of the third squeezing groove (hereinafter, appropriately referred to as the third absorption core portion) is more likely to move toward the skin surface side than the non-squeezed portion when receiving a force toward the inner side in the width direction, and it is easy to raise the inner absorption core portion toward the skin surface with the third squeezing groove as the apex. As a result, it becomes easier to fit the inner absorption core portion to the discharge port.

[0022] According to a preferred embodiment, the invention according to Embodiment 13 may have the following features in the invention according to any one of Embodiments 1 to 12. The absorption core may further have a third absorption core portion which is a portion located on the skin surface side of the third squeezing groove. The skin surface of the third absorption core portion is a part of the absorption core and is located on the skin surface side of the skin surface of the non-squeezed portion in the width direction. Thereby, a portion located on the skin surface side of the skin surface of the portion adjacent to the third absorption core portion among the third absorption core portions receives a force in a direction of pushing up from the non-skin surface side to the skin surface side from the adjacent portion, so that the third absorption core portion is more likely to move toward the skin surface side. Thereby, it is easy to raise the inner absorption core portion toward the skin surface with the third squeezing groove as the apex, and the intended deformation of the absorption core can be realized.

[0023] According to a preferred embodiment, the invention according to Embodiment 14 may have the following features in the invention according to any one of Embodiments 1 to 13. The depth of the bottom surface of the third squeezing groove is deeper than the depth of the bottom surface of the first squeezing groove. Thereby, the absorption core is more likely to be deformed in the third squeezing groove than in the first squeezing groove. As a result, it is easy to raise the inner absorption core portion toward the skin surface with the third squeezing groove as the apex, and it becomes easier to fit the inner absorption core portion to the discharge port.

[0024] According to a preferred embodiment, the invention according to Embodiment 15 may have the following features in the invention according to any one of Embodiments 1 to 14. The central region has a central front region including a region in front of the center of the central region in the front-back direction. The absorption core has a high basis weight region disposed at least in the central front region, and a low basis weight region having a lower basis weight than the high basis weight region and disposed outside the high basis weight region in the front-back direction. The first squeezing groove extends from the high basis weight region to the low basis weight region. The depth of the bottom surface of the first squeezing groove in the high basis weight region is deeper than the depth of the bottom surface of the first squeezing groove in the low basis weight region. Thereby, in the high basis weight region, since the bottom surface of the first squeezing groove is relatively deep, it is easier for the inner absorption core portion to bulge toward the skin side, while in the low basis weight region, since the bottom surface of the first squeezing groove is relatively shallow, it is possible to make it more difficult for the inner absorption core portion to bulge than in the high basis weight region. As a result, in the low basis weight region, it is possible to make it difficult for the inner absorption core portion to locally hit and difficult to give a sense of discomfort to the wearer.

[0025] According to a preferred embodiment, the invention according to Embodiment 16 may have the following features in the invention according to any one of Embodiments 1 to 15. The absorbent article may have a plurality of squeezing groove portions constituting the first squeezing groove and one or more intermittent portions between the plurality of squeezing groove portions. In the front-back direction, the total length of the plurality of squeezing groove portions is longer than the total length of the one or more intermittent portions. It is possible to ensure the ease of deformation of the absorption core based on the first squeezing groove while making it easier for the absorption core to bend along the body of the wearer in the front-back direction, and the intended deformation of the absorption core can be realized.

[0026] According to a preferred embodiment, the invention according to Embodiment 17 may have the following features in the invention according to any one of Embodiments 1 to 16. The central region has a central front region including a region in front of the center of the central region in the front-back direction. The squeezing groove further has a third squeezing groove disposed between the pair of first squeezing grooves in the width direction. Outside the central front region in the front-back direction, each of the first squeezing groove and the third squeezing groove extends intermittently in the front-back direction. In the front-back direction, the positions of the intermittent portions between the squeezing groove portions constituting the first squeezing groove are shifted from the positions of the intermittent portions between the squeezing groove portions constituting the third squeezing groove. Since the rigidity of the intermittent portion between the squeezing groove portions constituting the first squeezing groove (hereinafter appropriately referred to as the first intermittent portion) and the intermittent portion between the squeezing groove portions constituting the third squeezing groove (hereinafter appropriately referred to as the third intermittent portion) in the front-back direction is low, when the first intermittent portion is located in front of the third intermittent portion, behind the central front region, the absorption core is likely to bend along the line passing through the first intermittent portion and the third intermittent portion (that is, the line going outward in the width direction as going forward in the front-back direction). As a result, the absorption core is likely to bend along the buttocks, and leakage of excrement to the rear of the wearer can be further suppressed. Further, when the first intermittent portion is located behind the third intermittent portion, in front of the central front region, the absorption core is likely to bend along the line passing through the first intermittent portion and the third intermittent portion (that is, the line going inward in the width direction as going forward in the front-back direction). As a result, the absorption core is likely to bend along the abdomen, and leakage of excrement to the front of the wearer can be further suppressed.

[0027] (2) Overview of the Absorbent Article Hereinafter, with reference to the drawings, the absorbent article 1 according to the embodiment will be described. In the description of the following drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratios of the respective dimensions are different from the actual ones. Therefore, specific dimensions and the like should be determined with reference to the following description. Also, there may be portions where the relationships and ratios of the dimensions to each other are different among the drawings. The absorbent article 1 may be an absorbent article such as a sanitary napkin, a pantiliner, an incontinence pad, or a fecal pad. The absorbent article may be an article that is attached and used inside a wearing article such as underwear. The absorbent article 1 of the embodiment is a sanitary napkin for daytime use. In the description of the following drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratios of the respective dimensions may be different from the actual ones. Therefore, specific dimensions and the like should be determined with reference to the following description. Also, there may be portions where the relationships and ratios of the dimensions to each other are different among the drawings.

[0028] FIG. 1 is a plan view seen from the skin-side T1 of the absorbent article 1. FIG. 2 is a plan view seen from the non-skin-side T2 of the absorbent article 1. FIG. 3 is a schematic cross-sectional view taken along the line A-A shown in FIG. 1. Here, the "skin side" corresponds to the side facing the wearer's skin during use. The "non-skin side" corresponds to the side facing away from the wearer's skin during use. The absorbent article 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other. In the longitudinal direction L of the absorbent article 1, the side that contacts the lower abdomen of the wearer is referred to as the "front side", and the side that contacts the buttocks of the wearer is referred to as the "rear side".

[0029] The absorbent article 1 has a front region, a central region, and a rear region. The central region S2 is disposed between the front region S1 and the rear region S3. The central region S2 may be a region including a region facing the excretory opening of the wearer, for example, the vaginal opening. When the absorbent article 1 is worn on the wearing article, the central region S2 may be a region disposed under the crotch of the wearing article and between the legs of the wearer. When the absorbent article 1 has the wings 7 described later, the central region S2 may be a region from the most front front edge (specifically, the front base) of the wing 7 to the most rear rear edge (specifically, the rear base). When the absorbent article 1 does not have the wings 7 and the absorbent article 1 after manufacture is folded three or four times in the front-rear direction L, the central region S2 may be a region between the first fold and the second fold from the front. In other states and when the absorbent article 1 does not have the wings 7, the central region S2 may be the central region among the three equal divisions of the absorbent article 1 in the front-rear direction L. The front region S1 is located in front of the central region S2. The front edge of the front region S1 defines the front edge of the absorbent article 1. The rear region S3 is located behind the central region S2. The rear edge of the rear region S3 defines the rear edge of the absorbent article 1.

[0030] The absorbent article 1 has at least an absorbent core 31, a topsheet 10, and a backsheet 20. The absorbent article 1 has a vertically long shape. The topsheet 10 is disposed on the skin side T1 of the absorbent core 31 and is a sheet that contacts the wearer. The topsheet 10 may have a center sheet 11 that covers the center in the width direction W of the absorbent core 31, and a side sheet 12 that is disposed outside the center sheet 11 in the width direction W and is disposed at least on a wing 7 described later. The side sheet 12 may have a portion disposed in the width direction W of the center sheet 11 and may overlap the outer portion of the center sheet 11. The side sheet 12 has a portion disposed outside the absorbent core 31 in the width direction W, and in the present embodiment, is spaced apart from the absorbent core 31 in the width direction W. The center sheet 11 is composed of any sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. The side sheet 12 may have hydrophobicity. The material of the side sheet 12 may be the same as that of the center sheet 11. The center sheet 11 and the side sheet 12 may be joined by a sheet joint. The sheet joint may be constituted by a squeezed portion that squeezes the center sheet 11 and the side sheet 12, and may be configured to be visible from the skin side T1 of the absorbent article 1. The sheet joint may be constituted by an aggregate of dot-like squeezed portions, and more specifically, may be constituted by an aggregate in which dot-like squeezed portions are arranged in a rhombus shape and the rhombuses are arranged in the front-rear direction L. The sheet joint may extend in the front-rear direction L.

[0031] The backsheet 20 is disposed on the non-skin side T2 of the absorbent core 31 and the fiber sheet 50 and is a sheet that contacts the wearing article. The backsheet 20 is a liquid-impermeable sheet. For the backsheet 20, for example, an airtight resin film or the like can be used.

[0032] The absorbent core 31 constitutes the absorber 30. The absorbent core 31 may be composed of an absorbent material that absorbs liquid. The absorbent material constituting the absorbent core 31 can be formed, for example, from hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The absorber 30 may have a core wrap sheet 32 that covers the absorbent core 31. The core wrap sheet 32 can be composed of, for example, a non-woven fabric or a tissue. As a modification, the absorbent core 31 may not be covered by the core wrap sheet 32.

[0033] The absorbent article 1 has wings 7. The wings 7 are folded back at the wing fold line FL as a base point toward the non-skin side T2 of the article of clothing during wearing. At least the top sheet 10 and the back sheet 20 may be disposed on the wings 7. The wing fold line FL is defined by the base of the wings 7 and is a line connecting the portion located on the front side and the portion located on the rear side among the two portions recessed inward in the width direction W. The wings 7 are folded toward the top sheet 10 side before use with the wing fold line FL as a base point and may be folded back toward the non-skin side T2 of the article of clothing during use. A reinforcing sheet 15 disposed between the top sheet 10 and the back sheet 20 may be disposed on the wings 7. In this specification, the term "along the longitudinal direction L" means a direction having an angle of less than 45° with respect to the longitudinal direction L, and the term "along the width direction W" means a direction having an angle of less than 45° with respect to the width direction W.

[0034] As shown in FIG. 2 and the like, the absorbent article 1 has an adhesive portion for fastening the absorbent article 1 to a wearing article such as underwear. The adhesive portion is provided on the non-skin surface side T2 of the back sheet 20 and is a region where fastening means for fastening the absorbent article 1 to a wearing article such as underwear is provided. The adhesive portion has a main body adhesive portion 61 for fastening at least the region overlapping the absorbent core 31 to the wearing article. The main body adhesive portion 61 is provided in a region overlapping the absorbent core 31 in the thickness direction T of the absorbent article 1. The adhesive portion may have a wing adhesive portion 62 for fastening the wing 7 to the wearing article. The wing adhesive portion 62 is attached to the non-skin surface of the wing 7 and fastens to the non-skin surface of the wearing article in a state where the wing 7 is folded back to the non-skin surface side T2 of the wearing article during wearing.

[0035] (3) Details of the absorber and the squeezing grooves Details of the absorber 30 and the squeezing grooves 40 according to the embodiment will be described. FIG. 4 is a schematic cross-sectional view of the absorbent article 1 in the range indicated by F4 in FIG. 3. In FIG. 4, the topsheet 10 and the backsheet 20 are joined so as to follow the shape of the absorber 30. FIG. 5 is a plan view seen from the skin surface side T1 of the absorber 30. In FIG. 5, the first squeezing groove 41, the second squeezing groove 42, and the third squeezing groove 43, which will be described later, are shown, and the illustration of other squeezing portions of the absorber 30 is omitted. FIG. 6 is a schematic cross-sectional view for explaining the case where the absorbent core 31 receives a force toward the inner side in the width direction. FIG. 7 is a schematic view for explaining the movement of the absorbent core 31 when the wearer WA wears the absorbent article 1. Absorbent core 31A shows an example of the state of absorbent core 31 when absorbent article 1 is attached to a wearing article (not shown), absorbent core 31B shows an example of the state of absorbent core 31 when absorbent article 1 attached to the wearing article is slightly pulled up toward the crotch side, and absorbent core 31C shows an example of the state of absorbent core 31 when absorbent article 1 attached to the wearing article is further pulled up toward the crotch side and is positioned directly below the crotch.

[0036] As shown in FIGS. 4 and 6, the absorption core 31 has a first absorption core portion 311, a second absorption core portion 312, and a third absorption core portion 313. The first absorption core portion 311 is a portion located on the non-skin surface side T2 of the first squeezing groove 41 described later. The first absorption core portion 311 is a portion overlapping in the thickness direction T from the first squeezing groove 41. The first absorption core portion 311 overlaps at least the bottom surface 41b of the first squeezing groove 41 in the thickness direction T. For example, when the side portion of the first squeezing groove 41 is inclined with respect to the thickness direction T, the first absorption core portion 311 overlaps the side portion of the first squeezing groove 41 in the thickness direction T.

[0037] The second absorption core portion 312 is a portion located on the non-skin surface side T2 of the second squeezing groove 42 described later. The second absorption core portion 312 is a portion overlapping in the thickness direction T from the second squeezing groove 42. The second absorption core portion 312 overlaps at least the bottom surface 42b of the second squeezing groove 42 in the thickness direction T. For example, when the side portion of the second squeezing groove 42 is inclined with respect to the thickness direction T, the second absorption core portion 312 overlaps the side portion of the second squeezing groove 42 in the thickness direction T.

[0038] The third absorption core portion 313 is a portion located on the skin surface side T1 of the third squeezing groove 43 described later. The third absorption core portion 313 is a portion overlapping in the thickness direction T from the third squeezing groove 43. The third absorption core portion 313 overlaps at least the bottom surface 43b of the third squeezing groove 43 in the thickness direction T. For example, when the side portion of the third squeezing groove 43 is inclined with respect to the thickness direction T, the third absorption core portion 313 overlaps the side portion of the third squeezing groove 43 in the thickness direction T.

[0039] Further, the absorption core 31 has a non-squeezing portion 35 which is a part of the absorption core 31 and is separated from the squeezing groove 40 in the width direction W. The non-squeezing portion 35 is constituted by the non-squeezed portion of the absorption core 31. When forming the squeezing groove 40, since the side portion (particularly, the side portion on the bottom surface side of the squeezing groove 40) constituting the side wall of the squeezing groove 40 in the width direction W is also affected by the squeezing and the thickness of the side portion changes, the non-squeezing portion 35 is constituted by a portion separated from the squeezing groove 40 in the width direction W by at least 3 mm or more.

[0040] As shown in FIGS. 1 and 5, the absorption core 31 may have a high basis weight region HWR disposed at least in the central front region described later, and a low basis weight region LWR having a basis weight lower than that of the high basis weight region HWR and disposed outside the high basis weight region HWR in the front-rear direction L. The high basis weight region HWR may be disposed in the central region S2. The high basis weight region HWR may be a region sandwiched between a pair of first squeezing grooves 41 in the width direction W. The low basis weight region LWR may be disposed in the front side region S1 and the rear side region S3. The low basis weight region LWR may be a region outside a pair of first squeezing grooves 41 in the width direction W. Therefore, the high basis weight region HWR may be sandwiched between the low basis weight regions LWR in the width direction W.

[0041] The central region S2 may have a central front region including a region on the front side of the center of the central region S2 in the front-rear direction L. The central front region may be composed of the first and second regions among the three regions obtained by dividing the central region S2 into three in the front-rear direction L. The central front region may be composed of the central region among the three regions obtained by dividing the absorption core 31 into three in the width direction W. The central front region may be a region facing the vaginal orifice of the wearer. The high basis weight region HWR may be disposed at least in the central front region.

[0042] As shown in FIGS. 1, 4, and 5, the absorbent article 1 has a squeezing groove 40. The squeezing groove 40 is at least extended in the front-rear direction L with the absorption core 31 squeezed in the thickness direction T. The squeezing groove 40 is disposed at least in the central region S2. In the embodiment, the squeezing groove 40 has a pair of first squeezing grooves 41, a pair of second squeezing grooves 42, and a third squeezing groove 43.

[0043] The pair of first squeezing grooves 41 are disposed such that at least the absorption core 31 is squeezed from the skin surface side T1 to the non-skin surface side T2 and sandwiches the center of the absorption core 31 in the width direction W. The pair of second squeezing grooves 42 are disposed such that at least the absorption core 31 is squeezed from the skin surface side T1 to the non-skin surface side T2 and outside the pair of first squeezing grooves 41 in the width direction of the absorbent article 1. The third squeezing groove 43 is disposed such that at least the absorption core 31 is squeezed from the skin surface side T1 to the non-skin surface side T2 and between the pair of first squeezing grooves 41 in the width direction W.

[0044] As shown in FIGS. 4 and 6, the non-skin surface 311n of the first absorption core portion 311 is located on the non-skin surface side T2 with respect to the non-skin surface 35n of the non-squeezed portion 35 and is also located on the non-skin surface side T2 with respect to the non-skin surface 312n of the second absorption core portion 312. Therefore, the first absorption core portion 311 is located on the non-skin surface side T2 of the inner absorption core portion IAC which is the absorption core 31 between the pair of first squeezing grooves 41. Note that the non-skin surface 311n of the first absorption core portion 311 only needs to be located on the non-skin surface side T2 with respect to the non-skin surface 35n of at least one of the non-squeezed portions 35 in the width direction W. Similarly, the non-skin surface 311n of the first absorption core portion 311 only needs to be located on the non-skin surface side T2 with respect to the non-skin surface 312n of the second absorption core portion 312 outside the width direction W.

[0045] Note that, for example, the positions of the respective non-skin surfaces can be compared by the following method. After impregnating the absorbent article 1 serving as a sample with liquid nitrogen and freezing it, the absorbent article 1 is cut with a razor so that a cross section along the thickness direction T and the width direction W can be obtained, and a cross section is obtained in a plan view of the absorbent article 1. Next, the sample is returned to room temperature, and a cross-sectional image at a magnification of 50 times is obtained using an electron microscope (for example, VE7800 manufactured by Keyence Corporation). Then, in the cross-sectional image, the positions of the non-skin surface 311n of the first absorption core portion 311, the non-skin surface 35n of the non-squeezed portion 35, and the non-skin surface 312n of the second absorption core portion 312 are visually evaluated. Note that the non-skin surface 35n of the non-squeezed portion 35 to be compared with the non-skin surface 311n of the first absorption core portion 311 may be the non-skin surface 35n of a portion that is not squeezed and is located in the range of 3 mm or more and 10 mm or less from the width direction W from the first squeezing groove 41. The non-skin surface 35n of the non-squeezed portion 35 to be compared with the non-skin surface 312n of the second absorption core portion 312 may be the non-skin surface 35n of a portion that is not squeezed and is located in the range of 3 mm or more and 10 mm or less from the width direction W from the second squeezing groove 42.

[0046] As shown in FIG. 6A, assume a case where the absorption core 31 receives a force F directed inward in the width direction. As shown in FIG. 6B, since the first absorption core portion 311 is located on the non-skin surface side T2 with respect to the non-squeezed portion 35 on the outer side in the width direction, the first absorption core portion 311 receives a force f1 having a component in the width direction inward and a component in the non-skin surface side T2 direction from the non-squeezed portion 35. As a result, the first absorption core portion 311 is moved inward in the width direction while being moved in the non-skin surface side T2 direction. Next, the first absorption core portion 311 applies a force f2 to the non-squeezed portion 35 on the inner side in the width direction. Specifically, since the first absorption core portion 311 is located on the non-skin surface side T2 with respect to the non-skin surface 35n of the non-squeezed portion 35 on the inner side in the width direction, the first absorption core portion 311 applies a force f2 having a component in the width direction inward and a component in the skin surface side T1 direction to the non-squeezed portion 35. Therefore, as shown in FIG. 6C, the first absorption core portion 311 can easily push up the non-squeezed portion 35 on the inner side in the width direction, that is, the inner absorption core portion IAC, from the non-skin surface side T2 to the skin surface side T1 (see the absorption core 31A and the absorption core 31B in FIG. 7). As a result, as shown in FIG. 7, the inner absorption core portion IAC can be easily raised to the skin surface side T1, and the center in the width direction W of the absorbent article 1 can be fitted to the excretory opening E of the wearer WA (see the absorption core 31C in FIG. 7).

[0047] Here, since the non-skin surface 311n of the first absorption core portion 311 is located on the non-skin surface side T2 with respect to the non-skin surface 312n of the second absorption core portion 312, at least a part of the first absorption core portion 311 (specifically, the portion of the first absorption core portion 311 located on the non-skin surface side T2 with respect to the non-skin surface 312n) is located more on the non-skin surface side T2 compared to the second absorption core portion 312. Therefore, when the absorption core 31 receives a force F directed inward in the width direction, the first absorption core portion 311 can more easily push up the absorption core 31 on the inner side in the width direction compared to the second absorption core portion 312. As a result, the absorption core 31 is more likely to be deformed with the first squeezing groove 41 as a reference than the second squeezing groove 42, and the intended deformation of the absorption core 31 can be realized.

[0048] Further, a second squeezing groove 42 is disposed outside the first squeezing groove 41 in the width direction W. Therefore, when the absorption core 31 receives a force F directed inward in the width direction, it is possible to suppress the widthwise entry of the absorption core 31 between the first squeezing groove 41 and the second squeezing groove 42. As a result, it is possible to make it difficult for the widthwise entry of the absorption core 31 outside the first squeezing groove 41 in the width direction, which serves as a deformation base point, to occur, and to suppress lateral leakage of excrement. In this way, it is possible to achieve both a fit at the center in the width direction of the absorbent article 1 and suppression of lateral leakage of excrement.

[0049] As shown in FIG. 5, the first squeezing groove 41 may extend linearly along the front-rear direction L. At least a portion of the first squeezing groove 41 disposed in the central region S2 may extend linearly along the front-rear direction L. Thereby, since the position of the first squeezing groove 41 in the width direction W is the same at least in the central region S2, when the absorption core 31 receives a force F directed inward in the width direction in the central region S2, the force does not concentrate locally on the first squeezing groove 41, but is easily applied to the entire first squeezing groove 41. As a result, in the central region S2, it is possible to easily raise the inner absorption core portion IAC toward the skin surface side T1 over a wide range, and to realize the intended deformation of the absorption core 31.

[0050] Further, the first squeezing groove 41 may extend continuously or intermittently from the front edge to the rear edge of the absorption core 31. In the embodiment, the first squeezing groove 41 extends continuously from the front edge to the rear edge of the absorption core 31. Compared with the case where the first squeezing groove 41 does not extend from the front edge to the rear edge of the absorption core 31, when the absorption core 31 receives a force F directed inward in the width direction, the first absorption core portion 311 is more likely to receive the force F directed inward in the width direction. As a result, it is possible to easily raise the inner absorption core portion IAC toward the skin surface side T1, and to realize the intended deformation of the absorption core 31.

[0051] The first squeezing groove 41 may extend from the high basis weight region HWR to the low basis weight region LWR. In an embodiment, the first squeezing groove 41 extends from the high basis weight region HWR to the low basis weight region LWR of the front side region S1. Also, the first squeezing groove 41 extends from the high basis weight region HWR to the low basis weight region LWR of the rear side region S3. When squeezing the absorbent core 31 to form the first squeezing groove 41, by continuously providing the first squeezing groove 41 in the front-rear direction L, the first squeezing groove 41 can be provided so as to extend from the high basis weight region HWR to the low basis weight region LWR of the rear side region S3. Since the absorbent core 31 continues to be squeezed, the position of the absorbent core 31 can be stabilized and the first squeezing groove 41 can be stably provided, suppressing a decrease in quality.

[0052] In the front-rear direction L, the length of the first squeezing groove 41 may be longer than the length of the wing 7. Also, in the front-rear direction L, the length of the first squeezing groove 41 may be longer than the length of the second squeezing groove 42. In the front-rear direction L, the first squeezing groove 41 is arranged in a wider range compared to the second squeezing groove 42. Also, the portion of the first squeezing groove 41 where the second squeezing groove 42 is not on the outer side in the width direction W is more likely to receive the force F directed inward in the width direction. Therefore, the inner absorbent core portion IAC can be easily raised toward the skin surface side T1 over a wide range, realizing the intended deformation of the absorbent core 31.

[0053] The first squeezing groove 41 may overlap with the main body adhesive portion 61 in the thickness direction T. The main body adhesive portion 61 located on the non-skin surface side T2 of the first absorbent core portion 311 makes it difficult for the first absorbent core portion 311 to move toward the non-skin surface side T2, so that the inner absorbent core portion IAC can be more easily raised toward the skin surface side T1 by that much.

[0054] As shown in FIG. 5, in a plan view of the absorbent article 1, when the absorbent core 31 is divided into four equal parts in the width direction W, a pair of outer regions OR located on the outer side in the width direction W and an inner region IR located between the pair of outer regions OR may be provided. Here, the first squeezing groove 41 may be located in the inner region IR. The inner region IR corresponds to two of the absorbent cores 31 divided into four equal parts in the width direction W. Since the first squeezing groove 41 is located in the inner region IR, the width of the inner absorbent core portion IAC, which is the absorbent core 31 between the first squeezing grooves 41, is less than half of the width of the absorbent core 31. Therefore, compared with the case where the width of the inner absorbent core portion IAC is half or more of the width of the absorbent core 31, the inner absorbent core portion IAC that bulges toward the skin surface side T1 can be made smaller, and the range in which the absorbent core 31 deforms with the first squeezing groove 41 as a base point does not increase. Excessive deformation of the absorbent core 31 can be prevented, and it can be made difficult to give a sense of discomfort to the wearer. Also, since the inner absorbent core portion IAC is small, it becomes easier to enter under the crotch of the wearer. As a result, the inner absorbent core portion IAC can be brought closer to the excretory opening of the wearer. Furthermore, a wider region outside in the width direction than the first squeezing groove 41 serving as a deformation base point can be secured. As a result, lateral leakage of excrement can be suppressed.

[0055] As shown in FIG. 4, in a cross section along the width direction W and the thickness direction T of the absorbent article 1, the width W1 of the first squeezing groove 41 may be wider than the thickness T5 of the non-squeezed portion 35. Thereby, when the absorbent core 31 deforms with the first squeezing groove 41 as a base point, the absorbent core portion on one side of the first squeezing groove 41 and the absorbent core portion on the other side of the first squeezing groove 41 do not hit each other in the width direction W, and it can be made difficult to inhibit the deformation of the absorbent core 31. As a result, the inner absorbent core portion IAC can be easily bulged toward the skin surface side T1, and the intended deformation of the absorbent core 31 can be realized.

[0056] In the embodiment, the bottom surface 41b of the first squeezing groove 41 is constituted by the core wrap sheet 32. The bottom surface 41b of the first squeezing groove 41 may be constituted by the absorption core 31. In the first squeezing groove 41, the top sheet 10 is not squeezed. Therefore, since the top sheet 10 is not squeezed, the bottom surface 41b of the first squeezing groove 41 is not constituted by the top sheet 10. Since the rigidity of the non-squeezed portion of the top sheet 10 is lower than that of the squeezed portion, even if the top sheet 10 on the first squeezing groove 41 touches the discharge port (for example, the vaginal opening), it is possible to make it difficult to give a sense of discomfort to the wearer.

[0057] The depth D1 of the bottom surface 41b of the first squeezing groove 41 in the high tampon volume region HWR may be deeper than the depth D1 of the bottom surface 41b of the first squeezing groove 41 in the low tampon volume region LWR. Thereby, in the high tampon volume region HWR arranged in the central front region, since the bottom surface 41b of the first squeezing groove 41 is relatively deep, it is easy to raise the inner absorption core portion IAC toward the skin surface side. However, in the low tampon volume region LWR, since the bottom surface 41b of the first squeezing groove 41 is relatively shallow, it is possible to make it more difficult to raise the inner absorption core portion IAC than in the high tampon volume region HWR. As a result, in regions other than the high tampon volume region HWR, it is possible to make it difficult to locally hit the inner absorption core portion IAC and to make it difficult to give a sense of discomfort to the wearer. The depth D1 of the bottom surface 41b of the first squeezing groove 41 is the distance in the thickness direction T from the opening edge of the first squeezing groove 41 to the bottom surface 41b (in the embodiment, the skin surface of the core wrap sheet 32 on the skin surface side T1 of the absorption core 31), as shown in FIG. 4.

[0058] In the width direction W, the first squeezing groove 41 may be arranged at the boundary between the high tampon volume region HWR and the low tampon volume region LWR. Generally, since the absorption core 31 in the high tampon volume region HWR has higher rigidity than the absorption core 31 in the low tampon volume region LWR, a rigidity difference occurs with the first squeezing groove 41 as the boundary, and it is possible to easily deform with the first squeezing groove 41 as the base point.

[0059] The bottom surface 41b of the first squeezing groove 41 may be located on the non-skin surface side T2 with respect to the non-skin surface 35n of the non-squeezing portion 35. Thereby, the entire first absorption core portion 311 is located on the non-skin surface side T2 of the inner absorption core portion IAC of the non-squeezing portion 35. Therefore, when the first absorption core portion 311 receives a force F toward the inner side in the width direction and moves inward in the width direction, it becomes easier to further push up the inner absorption core portion IAC from the non-skin surface side T2 to the skin surface side T1. As a result, the inner absorption core portion IAC can be easily raised to the skin surface side T1. Note that the bottom surface 41b of the first squeezing groove 41 may be located on the non-skin surface side T2 with respect to the non-skin surface of the core wrap sheet 32 portion that contacts the non-skin surface 35n of the non-squeezing portion 35 in the thickness direction T.

[0060] As shown in FIG. 5, the second squeezing groove 42 may be constituted by an aggregate of a plurality of dot-like squeezing portions. Specifically, the second squeezing groove 42 may be arranged such that a plurality of dot-like squeezing portions are adjacent to each other (for example, within 3 mm). Thereby, in a plan view of the absorbent article 1, a portion recessed from the skin surface side to the non-skin surface side may linearly extend in the front-rear direction L as the second squeezing groove 42. As a modification, the second squeezing groove 42 may be constituted by a continuously extending squeezing portion. Specifically, the second squeezing groove 42 may be constituted by a portion that is continuously squeezed and extends in the front-rear direction L.

[0061] In a plan view of the absorbent article 1, the second squeezing groove 42 may extend in a curved shape. Thereby, compared with the case where the second squeezing groove 42 linearly extends along the front-rear direction L, the width direction distance between the position of the innermost inner edge and the position of the outermost outer edge of the second squeezing groove 42 in the width direction W becomes longer. Therefore, the width direction length of the second squeezing groove 42 can be ensured, and the absorption core 31 can be suppressed from entering the width direction by the amount of the width direction length compared with the linear second squeezing groove 42. In the embodiment, in a plan view of the absorbent article 1, the second squeezing groove 42 is annular. Therefore, the front end portions of the pair of second squeezing grooves 42 are connected to each other, and the rear end portions of the pair of second squeezing grooves 42 are connected to each other. Each of the pair of second squeezing grooves 42 is arc-shaped. As a modification, the second squeezing groove 42 may be linear.

[0062] In a plan view of the absorbent article 1, the distance in the width direction W between the first squeezing groove 41 and the second squeezing groove 42 is relatively far on the central side in the front-back direction L, and the distance in the width direction W between the first squeezing groove 41 and the second squeezing groove 42 is relatively close on the outer side in the front-back direction L. On the central side in the front-back direction L, since the force directed toward the inner side in the width direction W is strong, although the absorbent core 31 is likely to enter in width, the entry of the absorbent core 31 in width can be suppressed at a position further away from the first squeezing groove 41 serving as a deformation base point. In the central region S2, by arranging the pair of first squeezing grooves 41 inside the annular second squeezing groove 42, the second squeezing groove 42 is arranged on the outer side in the width direction W than the pair of first squeezing grooves 41.

[0063] Also, at least a portion of the second squeezing groove 42 that overlaps with the central front region in the width direction W may be located in each of the pair of outer regions OR. That is, in the outer region OR, the second squeezing groove 42 may be located on the outer side in the width direction W than the central front region. By the portion of the second squeezing groove 42 arranged in the outer region OR, the occurrence of the entry of the absorbent core 31 in width in the outer region OR can be suppressed. Since the outer region OR is located on the outer side in the width direction than the inner region IR, it is possible to make it difficult for the absorbent core 31 on the outer side in the width direction than the first squeezing groove 41 serving as a deformation base point to enter in width. It is possible to widely secure the absorption area of excrement on the outer side in the width direction of the central front region where excrement is likely to leak. Note that on the outer side in the front-back direction L than the central front region, the second squeezing groove 42 may be arranged in the outer region OR or may be arranged in the inner region IR.

[0064] As shown in FIG. 4, in the embodiment, the bottom surface 42b of the second squeezing groove 42 is constituted by the topsheet 10. Note that the bottom surface 42b of the second squeezing groove 42 may be constituted by the absorption core 31 or the core wrap sheet 32 when the topsheet 10 is broken by squeezing. As shown in FIG. 4, the bottom surface 42b of the second squeezing groove 42 may be located on the skin surface side T1 with respect to the non-skin surface 35n of the non-squeezing portion 35. Thereby, at least a part of the second absorption core portion 312 is located on the skin surface side T1 with respect to the non-squeezing portion 35. Here, as described above, since the non-skin surface 311n of the first absorption core portion 311 is located on the non-skin surface side T2 with respect to the non-skin surface 32n of the second absorption core portion 312, when the second absorption core portion 312 receives a force F directed inward in the width direction, it becomes easier to move the absorption core 31 between the first squeezing groove 41 and the second squeezing groove 42 in the direction from the skin surface side T1 to the non-skin surface side T2. As a result, the first absorption core portion 311 is more likely to receive a force f1 in the direction from the skin surface side T1 to the non-skin surface side T2, and the absorption core 31 is more likely to be deformed with the first squeezing groove 41 as a reference point rather than the second squeezing groove 42, and the intended deformation of the absorption core 31 can be realized.

[0065] In the embodiment, at least the absorption core 31 is squeezed from the non-skin surface side T2 to the skin surface side T1 in the third squeezing groove 43. Further, the third squeezing groove 43 is disposed between the pair of first squeezing grooves 41 in the width direction W. Thereby, when the third absorption core portion 313 receives a force directed inward in the width direction, it can move more easily toward the skin surface side T1 with respect to the non-squeezing portion 35, and the inner absorption core portion IAC can be easily raised toward the skin surface side T1 with the third squeezing groove 43 as a vertex (see FIG. 7). As a result, it becomes easier to fit the inner absorption core portion IAC to the discharge port E.

[0066] As shown in FIG. 4, the skin surface 313s of the third absorption core portion 313 may be located on the skin surface side T1 with respect to the skin surface 35s of the non-squeezed portion 35. Thereby, the portion of the third absorption core portion 313 that is located on the skin surface side T1 with respect to the skin surface 35s of the non-squeezed portion 35 receives a force in the direction of pushing up from the non-squeezed portion 35 adjacent to the third absorption core portion 313 from the non-skin surface side T2 to the skin surface side T1. Therefore, the third absorption core portion 313 is likely to move toward the skin surface side T1. As a result, the inner absorption core portion IAC can be easily raised toward the skin surface side T1 with the third squeezing groove 43 as the apex, and the intended deformation of the absorption core 31 can be realized. Note that the positional relationship between the skin surface 313s of the third absorption core portion 313 and the skin surface 35s of the non-squeezed portion 35 can be visually evaluated using an electron microscope (for example, Keyence Corporation VE7800) as described above. Note that the non-skin surface 35n of the non-squeezed portion 35 is the non-skin surface 35n of the portion that is located in the range of at least 3 mm or more and 10 mm or less in the width direction W from the third squeezing groove and is not squeezed.

[0067] As shown in FIG. 4, the depth D3 of the bottom surface 43b of the third squeezing groove 43 may be deeper than the depth D1 of the bottom surface 41b of the first squeezing groove 41. Thereby, the absorption core 31 is more likely to be deformed in the third squeezing groove 43 than in the first squeezing groove 41. As a result, the inner absorption core portion IAC can be easily raised toward the skin surface side T1 with the third squeezing groove 43 as the apex, and the inner absorption core portion IAC can be easily fitted to the discharge port E. Note that the depth D3 of the bottom surface 43b of the third squeezing groove 43 is the distance in the thickness direction T from the opening edge of the third squeezing groove 43 to the bottom surface 43b (in the embodiment, the non-skin surface of the core wrap sheet 32 on the non-skin surface side T2 of the absorption core 31) as shown in FIG. 4.

[0068] The third squeezing groove 43 may not overlap with the main body adhesive portion 61 in the thickness direction T. Thereby, the movement of the third absorption core portion 313 toward the skin surface side T1 is not inhibited by the main body adhesive portion 61, and the third absorption core portion 313 is likely to move toward the skin surface side T1. As a result, the inner absorption core portion IAC can be easily raised toward the skin surface side T1 with the third squeezing groove 43 as the apex.

[0069] As shown in FIG. 4, in the embodiment, in the first squeezing groove 41 and the third squeezing groove 43, the absorption core 31 and the core wrap sheet 32 are squeezed. In the first squeezing groove 41 and the third squeezing groove 43, the top sheet 10 is not squeezed. Therefore, in the first squeezing groove 41 and the third squeezing groove 43, at least the absorption core 31 is squeezed without the top sheet 10 being squeezed. When forming the first squeezing groove 41 so that the non-skin surface 311n of the first absorption core part 311 is located on the non-skin surface side T2 rather than the non-skin surface 35n of the non-squeezing part 35, compared with the case where it is not so, it is necessary to squeeze strongly. However, when forming the first squeezing groove 41, since the top sheet 10 is not squeezed, there is no risk of the top sheet 10 being torn. As a result, even if the top sheet 10 comes into contact with the discharge port E due to the inner absorption core part IAC bulging toward the skin surface side T1, there is no tear in the top sheet 10 caused by the formation of the first squeezing groove 41, and it is possible to make it difficult to give the wearer a sense of discomfort. Further, when the user visually recognizes the top sheet 10, the absorbent article 1 is not considered to be a defective product, and a decrease in the quality of the absorbent article 1 can be suppressed.

[0070] On the other hand, in the second squeezing groove 42, in addition to the absorption core 31 and the core wrap sheet 32, the top sheet 10 is squeezed. In the first squeezing groove 41 and the third squeezing groove 43, the absorption core 31 is squeezed together with the top sheet 10.

[0071] The tensile strength of the top sheet 10 in the width direction W may be 10 N / 25 mm or less. By reducing the tensile strength of the top sheet 10, the softness of the top sheet 10 can be ensured. As a result, even if the top sheet 10 comes into contact with the discharge port E due to the inner absorption core part IAC bulging toward the skin surface side T1, it is possible to make it difficult to give the wearer a sense of discomfort.

[0072] The tensile strength can be measured by the following method. For example, the topsheet 10 is removed from the absorbent article 1. The topsheet 10 is cut out so that the length in the longitudinal direction L of the topsheet 10 is 25 mm. The cut-out topsheet 10 is set in a tensile testing machine (Autograph AGS-1kNG: manufactured by Shimadzu Corporation), and set so that the chuck distance is 100 mm. While fixing one side in the width direction W of the cut-out topsheet 10, the topsheet 10 is pulled to the other side in the width direction W. The pulling speed is 100 mm / min. The maximum value of the tensile force when the topsheet 10 breaks is measured as the tensile strength. The same measurement is performed on five samples, and their average value is taken as the tensile strength (N / 25 mm). The tensile strength of the topsheet 10 for a length of 25 mm is being evaluated. Since 25 mm is used as the reference for the length of the topsheet 10, the denominator of the unit is 25 mm.

[0073] The width of the second squeezing groove 42 may be wider than the width of the first squeezing groove 41. Also, the width of the second squeezing groove 42 may be wider than the width of the third squeezing groove 43. Thereby, the width of the absorption core can be suppressed by the amount by which the width of the second squeezing groove 42 is wide. Note that the width of the squeezing groove 40 is the distance from one side wall of the squeezing groove 40 to the other side wall in a direction perpendicular to the extending direction in which the squeezing groove 40 extends in the plan view of the absorbent article 1. Note that the width of the first squeezing groove 41 may be wider than the width of the third squeezing groove 43. Thereby, compared with the third squeezing groove 43, it becomes difficult for the absorption cores 31 to hit each other in the first squeezing groove 41. In the first squeezing groove 41, it becomes difficult to inhibit the deformation of the absorption core 31, and the inner absorption core portion IAC can be easily raised toward the skin surface side T1. Also, the width of the third squeezing groove 43 may be wider than the width of the first squeezing groove 41. Thereby, compared with the first squeezing groove 41, it becomes difficult for the absorption cores 31 to hit each other in the third squeezing groove 43. The deformation of the absorption core 31 can be made difficult to be inhibited, and the inner absorption core portion can be easily raised toward the skin surface side with the third squeezing groove 43 as the apex.

[0074] The first absorbent core part 311 may be arranged such that relatively rigid parts and relatively less rigid parts are alternately arranged in the front-rear direction L. Thereby, since it becomes easier for the absorbent core to bend in the front-rear direction L with the less rigid part as a base point, it becomes possible to easily follow the wearer's body along the absorbent article 1 in the front-rear direction L. Note that the rigidity of the third absorbent core part 313 may be the same as that of the first absorbent core part 311.

[0075] Note that, as shown in FIG. 1, in the absorbent article 1, positions other than the squeezing groove 40 may be squeezed. For example, in a plan view of the absorbent article 1, it may be squeezed in a dot pattern inside the annular second squeezing groove 42. Also, a plurality of dot-shaped squeezing parts may be arranged on a line outside the second squeezing groove 42 in the front-rear direction L. These squeezing parts, like the second squeezing groove 42, squeeze the topsheet 10 in addition to the absorbent core 31 and the core wrap sheet 32.

[0076] The first squeezing groove 41 may be formed by being squeezed by a squeezing formation part constituted by convex parts and concave parts facing each other. For example, a convex part for forming the first squeezing groove 41 and a concave part for forming the third squeezing groove 43 may be provided on one of a pair of rollers facing each other. A concave part for forming the first squeezing groove 41 and a convex part for forming the third squeezing groove 43 may be provided on the other roller. The convex part and the concave part for forming the first squeezing groove 41 face each other, and the convex part and the concave part for forming the third squeezing groove 43 face each other. By squeezing the base material of the absorber 30 that becomes the absorber 30 by such a pair of rollers, the first squeezing groove 41 and the third squeezing groove 43 may be formed.

[0077] With respect to the base material of the absorber 30 in which the first squeezing groove 41 and the third squeezing groove 43 are formed, the topsheet 10 is arranged and may be squeezed by a squeezing formation part constituted by a convex part and a flat surface to form the second squeezing groove 42. Thereafter, the absorbent article 1 may be manufactured in the same manner as the usual manufacturing method of absorbent articles.

[0078] Incidentally, for example, when the first squeezing groove 41 is formed by a convex portion and a flat surface, in the thickness direction T, the non-skin surface 311n of the first absorbent core portion 311 is located at the same position as the non-skin surface 35n of the non-squeezing portion 35.

[0079] (4) Absorbent body according to the modified example The absorbent body 30 according to the modified example will be described. The differences from the above-described embodiment will be mainly described. FIG. 8 is a plan view seen from the skin surface side T1 of the absorbent body 30 according to the modified example. In FIG. 8, the first squeezing groove 41 and the third squeezing groove 43 are shown, and the second squeezing groove 42 is not shown.

[0080] As shown in FIG. 8, in the absorbent body 30 (absorbent article 1), the first squeezing groove 41 extends intermittently in the front-rear direction L. As a result, the rigidity between the first squeezing grooves 41 in the front-rear direction L (the first intermittent portion 41i described later) becomes low, so that the absorbent core 31 is likely to bend in the front-rear direction L between the first squeezing grooves 41 in the front-rear direction L. As a result, in the front-rear direction L, the absorbent core 31 is likely to bend along the wearer's body, and the absorbent core 31 can be easily fitted to the wearer's body.

[0081] The third squeezing groove 43 also extends intermittently in the front-rear direction L, similarly to the first squeezing groove 41. Therefore, similarly to the first squeezing groove 41, in the front-rear direction L, the absorbent core 31 is likely to bend along the wearer's body, and the absorbent core 31 can be easily fitted to the wearer's body.

[0082] Each of the first squeezing groove 41 and the third squeezing groove 43 may extend intermittently in the front-rear direction L outside the front-rear direction L rather than in the center front region. In the modified example, the first squeezing groove 41 is not arranged in the region overlapping the center front region and the width direction W (or the thickness direction T). On the other hand, the third squeezing groove 43 is arranged in the region overlapping the center front region and the width direction W (or the thickness direction T). Further, the first squeezing groove 41 may be arranged only at a position that does not overlap the high basis weight region HWR in the thickness direction T. On the other hand, the first squeezing groove 41 may be arranged at a position overlapping the high basis weight region HWR in the thickness direction T. Incidentally, in the modified example, the region other than the high basis weight region HWR is the low basis weight region LWR.

[0083] Further, the absorbent article 1 (absorbent body 30) may have a plurality of squeezing groove portions (hereinafter referred to as the first squeezing groove portions 41p) that constitute the first squeezing groove 41, and one or more intermittent portions (hereinafter referred to as the first intermittent portions 41i) between the plurality of first squeezing groove portions 41p. In the front-rear direction L, the total length of the plurality of first squeezing groove portions 41p may be longer than the total length of the one or more first intermittent portions 41i. Thereby, while making it easier for the absorbent core 31 to bend along the wearer's body in the front-rear direction L, it is possible to ensure the ease of deformation of the absorbent core 31 based on the first squeezing groove 41, and the intended deformation of the absorbent core 31 can be realized. Note that the total length of the one or more first intermittent portions 41i does not need to include the length of the first intermittent portion 41i that is longer than the length of one first squeezing groove portion 41p in the front-rear direction L. For example, the total length of the one or more first intermittent portions 41i does not need to include the length of the first intermittent portion 41i that overlaps the high flatness amount region HWR in the thickness direction T.

[0084] Also, the absorbent article 1 (absorbent body 30) may have a plurality of squeezing groove portions (hereinafter referred to as the third squeezing groove portions 43p) that constitute the third squeezing groove 43, and one or more intermittent portions (hereinafter referred to as the third intermittent portions 43i) between the plurality of third squeezing groove portions 43p. In the front-rear direction L, the total length of the plurality of third squeezing groove portions 43p may be longer than the total length of the one or more third intermittent portions 43i.

[0085] In the front-rear direction L, the position of the first intermittent portion 41i may be shifted from the position of the third intermittent portion 43i. Therefore, the first intermittent portion 41i and the third intermittent portion 43i do not need to overlap in the width direction W, or only a part of the first intermittent portion 41i may overlap the third intermittent portion 43i in the width direction W.

[0086] In this modification example, the first intermittent portion 41i is located on the front side of the third intermittent portion 43i. Here, the rigidity of the first intermittent portion 41i is lower than the rigidity of the first squeezing groove 41, and the rigidity of the third intermittent portion 43i is lower than the rigidity of the third squeezing groove 43. Therefore, behind the central front region, the absorption core 31 is more likely to bend along the line passing through the first intermittent portion 41i and the third intermittent portion 43i (that is, the line L13 that goes outward in the width direction W as it goes toward the front side in the front-rear direction L). As a result, the absorption core 31 is more likely to bend along the buttocks, and further leakage of excrement to the rear of the wearer can be suppressed.

[0087] In other modification examples, the first intermittent portion 41i may be located on the rear side of the third intermittent portion 43i. In this case, in front of the central front region, the absorption core 31 is more likely to bend along the line passing through the first intermittent portion 41i and the third intermittent portion 43i (that is, the line that goes inward in the width direction as it goes toward the front side in the front-rear direction). As a result, the absorption core 31 is more likely to bend along the abdomen, and further leakage of excrement to the front of the wearer can be suppressed.

[0088] The length of the first intermittent portion 41i in the front-rear direction L may be longer than the length of the second intermittent portion 42i in the front-rear direction L. Thereby, it becomes easier to receive a force toward the inner side in the width direction W in the first squeezing groove 41 than in the second squeezing groove 42, and it becomes easier to deform with the first squeezing groove 41 as a base point. Also, the length of the third intermittent portion 43i in the front-rear direction L may be longer than the length of the second intermittent portion 42i in the front-rear direction L. Thereby, it becomes easier to receive a force toward the inner side in the width direction W in the third squeezing groove 43 than in the second squeezing groove 42, and it becomes easier to deform with the third squeezing groove 43 as a base point.

[0089] In addition, when there are a plurality of first intermittent portions 41i, the positional relationship in the front-rear direction L between the first intermittent portion 41i and the third intermittent portion 43i is based on the first intermittent portion 41i closest to the third intermittent portion 43i. Similarly, when there are a plurality of third intermittent portions 43i, the positional relationship in the front-rear direction L between the first intermittent portion 41i and the third intermittent portion 43i is based on the third intermittent portion 43i closest to the first intermittent portion 41i.

[0090] (5) Other Embodiments In the above-described embodiment, the non-skin surface 311n of the first absorption core portion 311 was located on the non-skin surface side T2 with respect to the non-skin surface 35n of the non-squeezed portion 35 and also on the non-skin surface side T2 with respect to the non-skin surface 312n of the second absorption core portion 312. However, a part of the non-skin surface 311n of the first absorption core portion 311 may be located on the skin surface side T1 with respect to the non-skin surface 35n of the non-squeezed portion 35 due to, for example, manufacturing errors, etc., or may be located on the skin surface side T1 with respect to the non-skin surface 312n of the second absorption core portion 312.

[0091] In the above-described embodiment, in the second squeezing groove 42, the absorption core 31, the core wrap sheet 32, and the top sheet 10 were squeezed, but it is not limited thereto. In the second squeezing groove 42, for example, only the absorption core 31 and the core wrap sheet 32 may be squeezed. In the third squeezing groove 43, for example, only the absorption core 31 may be squeezed, or in addition to the absorption core 31 and the core wrap sheet 32, a sheet disposed on the non-skin surface side T2 with respect to the absorbent body 30 may be squeezed, or a sheet disposed between the top sheet 10 and the absorbent body 30 (for example, an intermediate sheet disposed between the top sheet 10 and the absorbent body 30) may be squeezed.

[0092] As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed aspects without departing from the spirit and scope of the present invention as defined by the claims. Therefore, the description of this specification is for the purpose of illustration and has no restrictive meaning for the present invention.

Explanation of Reference Numerals

[0093] 1: Absorbent article 10: Top sheet 31: Absorption core 32: Core wrap sheet 35: Non-squeezed portion 40: Squeezing groove 41: First squeezing groove 42: Second squeezing groove 43: Third squeezing groove 311: First absorption core part 312: Second absorption core part S1: Front side area S2: Central area S3: Rear side area L: Front - rear direction T: Thickness direction W: Width direction

Claims

1. A front-back direction, a width direction, and a thickness direction; A front side region, a central region, and a rear side region; An absorption core; At least the absorption core is compressed in the thickness direction and has a compression groove extending in the front-back direction; and An absorbent article in which the compression groove is disposed at least in the central region, wherein the compression groove has a pair of first compression grooves in which the absorption core is compressed from the skin side to the non-skin side and is disposed so as to sandwich the center of the absorption core in the width direction; has a pair of second compression grooves in which the absorption core is compressed from the skin side to the non-skin side and is disposed outside the absorption article in the width direction than the pair of first compression grooves; the absorption core has a first absorption core portion that is a portion located on the non-skin side of the first compression groove; has a second absorption core portion that is a portion located on the non-skin side of the second compression groove; the non-skin surface of the first absorption core portion is a part of the absorption core, is located on the non-skin side than the non-skin surface of the non-compressed portion that is separated from the compression groove in the width direction, and is located on the non-skin side than the non-skin surface of the second absorption core portion; the absorbent article has a topsheet that contacts the wearer; in the first compression groove, the topsheet is non-compressed; the absorbent article has a dot-like compression portion in which at least the absorption core and the topsheet are compressed in the thickness direction inside the width direction than the second compression groove in a plan view of the absorbent article.

2. A front-back direction, a width direction, and a thickness direction; A front side region, a central region, and a rear side region; An absorption core; At least the absorption core is compressed in the thickness direction and has a compression groove extending in the front-back direction; and An absorbent article in which the compression groove is disposed at least in the central region, wherein the compression groove has a pair of first compression grooves in which the absorption core is compressed from the skin side to the non-skin side and is disposed so as to sandwich the center of the absorption core in the width direction; has a pair of second compression grooves in which the absorption core is compressed from the skin side to the non-skin side and is disposed outside the absorption article in the width direction than the pair of first compression grooves; the absorption core has a first absorption core portion that is a portion located on the non-skin side of the first compression groove; has a second absorption core portion that is a portion located on the non-skin side of the second compression groove; The non-skin surface of the first absorption core portion is located on the non-skin surface side of the non-squeezed portion of a part of the absorption core that is separated from the squeezing groove in the width direction, and is also located on the non-skin surface side of the non-skin surface of the second absorption core portion. An absorbent article, wherein in a cross-section along the width direction and the thickness direction of the absorbent article, the width of the first squeezing groove is wider than the thickness of the non-squeezed portion. **Claim 3** The front-rear direction, the width direction, and the thickness direction, The front side region, the central region, and the rear side region, An absorption core, At least the absorption core is squeezed in the thickness direction and has a squeezing groove extending in the front-rear direction. An absorbent article, wherein the squeezing groove is disposed at least in the central region, The squeezing groove, A pair of first squeezing grooves in which the absorption core is squeezed from the skin surface side to the non-skin surface side and is disposed so as to sandwich the center of the absorption core in the width direction, A pair of second squeezing grooves in which the absorption core is squeezed from the skin surface side to the non-skin surface side and is disposed outside the pair of first squeezing grooves in the width direction of the absorbent article. The absorption core, A first absorption core portion that is a portion located on the non-skin surface side of the first squeezing groove, A second absorption core portion that is a portion located on the non-skin surface side of the second squeezing groove. The non-skin surface of the first absorption core portion is located on the non-skin surface side of the non-squeezed portion of a part of the absorption core that is separated from the squeezing groove in the width direction, and is also located on the non-skin surface side of the non-skin surface of the second absorption core portion. The squeezing groove further has a third squeezing groove in which at least the absorption core is squeezed from the non-skin surface side to the skin surface side and is disposed between the pair of first squeezing grooves in the width direction. An absorbent article, wherein the depth of the bottom surface of the third squeezing groove is deeper than the depth of the bottom surface of the first squeezing groove. **Claim 4** The front-rear direction, the width direction, and the thickness direction, The front side region, the central region, and the rear side region, An absorption core, At least the absorption core is squeezed in the thickness direction and has a squeezing groove extending in the front-rear direction. An absorbent article, wherein the squeezing groove is disposed at least in the central region, The squeezing groove, A pair of first squeezing grooves in which the absorption core is squeezed from the skin surface side to the non-skin surface side and is disposed so as to sandwich the center of the absorption core in the width direction, A pair of second squeezing grooves in which the absorption core is squeezed from the skin surface side to the non-skin surface side and is disposed outside the pair of first squeezing grooves in the width direction of the absorbent article. The absorption core, A first absorbent core portion which is a portion located on the non-skin surface side of the first squeezing groove; A second absorbent core portion which is a portion located on the non-skin surface side of the second squeezing groove, and has; The non-skin surface of the first absorbent core portion is a part of the absorbent core, and is located on the non-skin surface side of the non-squeezing portion which is separated from the squeezing groove in the width direction, and is also located on the non-skin surface side of the non-skin surface of the second absorbent core portion; The central region has a central front region including a region in front of the center of the central region in the front-rear direction; The squeezing groove further has a third squeezing groove in which at least the absorbent core is squeezed from the non-skin surface side to the skin surface side and is disposed between a pair of the first squeezing grooves in the width direction; On the outer side of the central front region in the front-rear direction, each of the first squeezing groove and the third squeezing groove extends intermittently in the front-rear direction; In the front-rear direction, the position of the intermittent portion between the squeezing groove portions constituting the first squeezing groove is shifted from the position of the intermittent portion between the squeezing groove portions constituting the third squeezing groove. An absorbent article.

5. The absorbent article according to any one of claims 1 to 4, wherein at least a portion of the first squeezing groove disposed in the central region extends linearly along the front-rear direction.

6. The absorbent article according to any one of claims 1 to 4, wherein the first squeezing groove extends continuously or intermittently from the front edge to the rear edge of the absorbent core.

7. The absorbent article according to any one of claims 1 to 4, wherein the bottom surface of the first squeezing groove is located on the non-skin surface side of the non-squeezing portion of the non-skin surface.

8. The absorbent article according to any one of claims 1 to 4, wherein in a plan view of the absorbent article, the second squeezing groove extends in a curved shape.

9. The absorbent article according to any one of claims 1 to 4, wherein the bottom surface of the second squeezing groove is located on the skin surface side of the non-squeezing portion of the non-skin surface.

10. In a plan view of the absorbent article, when the absorbent core is equally divided into four in the width direction, a pair of outer regions located on the outer side in the width direction and an inner region located between the pair of outer regions are provided; The central region has a central front region including a region in front of the center of the central region in the front-rear direction; The absorbent article according to any one of claims 1 to 4, wherein at least a portion of the second squeezing groove overlapping the central front region in the width direction is located in each of the pair of outer regions.

11. In a plan view of the absorbent article, when the absorbent core is divided into four equal parts in the width direction, a pair of outer regions located on the outer side in the width direction and an inner region located between the pair of outer regions are provided. The first squeezing groove is located in the inner region, and the absorbent article according to any one of claims 1 to 4.

12. In the front-rear direction, the length of the first squeezing groove is longer than the length of the second squeezing groove, and the absorbent article according to any one of claims 1 to 4.

13. It has a topsheet that contacts the wearer. In the first squeezing groove, the topsheet is not squeezed, and the absorbent article according to any one of claims 1, 3, and 4.

14. The squeezing groove further has a third squeezing groove in which at least the absorbent core is squeezed from the non-skin side to the skin side and is disposed between a pair of the first squeezing grooves in the width direction, and the absorbent article according to any one of claims 1 to 4.

15. The absorbent core further has a third absorbent core portion that is a portion located on the skin side of the third squeezing groove. The skin surface of the third absorbent core portion is located closer to the skin side than the skin surface of the non-squeezed portion, and the absorbent article according to claim 14.

16. The central region has a central front region that includes a region in front of the center of the central region in the front-rear direction. The absorbent core has at least a high basis weight region disposed in at least the central front region, and a low basis weight region having a lower basis weight than the high basis weight region and disposed outside the high basis weight region in the front-rear direction, and the absorbent article according to any one of claims 1 to 4. The first squeezing groove extends from the high basis weight region to the low basis weight region. The depth of the bottom surface of the first squeezing groove in the high basis weight region is deeper than the depth of the bottom surface of the first squeezing groove in the low basis weight region, and the absorbent article according to any one of claims 1 to 4.

17. It has a plurality of squeezing groove portions that constitute the first squeezing groove and one or more intermittent portions between the plurality of squeezing groove portions. In the front-rear direction, the total length of the plurality of squeezing groove portions is longer than the total length of the one or more intermittent portions, and the absorbent article according to any one of claims 1 to 4.

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