阅读说明：本技术 吸收性物品 (Absorbent article ) 是由 畑中歩梦 加藤伸亨 山本千裕 田村龙也 于 2021-06-11 设计创作，主要内容包括：本发明提供能够抑制由吸收芯的刚性引起的穿着感的降低并且能够适当地搬送吸收芯的吸收性物品。吸收性物品具有：相互正交的长度方向和宽度方向；具有吸收材料的吸收芯(30)；以及芯挤压区域,至少设置有将吸收芯在厚度方向上压缩而成的芯挤压部(85)。芯挤压区域具有配置于吸收芯的长度方向的一侧的端部的第一挤压区域(31)和配置于吸收芯的长度方向的另一侧的端部的第二挤压区域(32)。在第一挤压区域与第二挤压区域之间设置有未设置有芯挤压部的非挤压区域(35)。第一挤压区域的长度方向的内端边(31S)的形状与第二挤压区域的长度方向的内端边(32S)的形状不同。(The invention provides an absorbent article capable of suppressing the reduction of wearing feeling caused by the rigidity of an absorbent core and properly conveying the absorbent core. The absorbent article has: a length direction and a width direction orthogonal to each other; an absorbent core (30) having an absorbent material; and a core pressing region provided with at least a core pressing section (85) in which the absorbent core is compressed in the thickness direction. The core crush zone has a first crush zone (31) disposed at one end in the longitudinal direction of the absorbent core and a second crush zone (32) disposed at the other end in the longitudinal direction of the absorbent core. A non-pressing region (35) in which no core pressing portion is provided between the first pressing region and the second pressing region. The shape of the inner end edge (31S) in the longitudinal direction of the first compressed region is different from the shape of the inner end edge (32S) in the longitudinal direction of the second compressed region.)

1. An absorbent article having:

a length direction and a width direction orthogonal to each other;

an absorbent core having an absorbent material; and

a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction,

it is characterized in that the preparation method is characterized in that,

the core crush zone has a first crush zone disposed at one end in the longitudinal direction of the absorbent core and a second crush zone disposed at the other end in the longitudinal direction of the absorbent core,

a non-pressing region where the core pressing portion is not provided is provided between the first pressing region and the second pressing region,

the shape of the longitudinal inner end edge of the first compressed region is different from the shape of the longitudinal inner end edge of the second compressed region.

2. An absorbent article having:

a length direction and a width direction orthogonal to each other;

an absorbent core having an absorbent material; and

a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction,

it is characterized in that the preparation method is characterized in that,

the absorbent article has: a core pressing region provided with the core pressing portion at an end of the absorbent core in the longitudinal direction; and a non-extrusion region in which the core extrusion portion is not provided at a position inward in the longitudinal direction of the core extrusion region,

the basis weight of the absorbent material in the core crush zone is higher than the basis weight of the absorbent material in an adjacent zone in the non-crush zone that is adjacent to the core crush zone.

3. The absorbent article according to claim 2,

the core pressing region has a first pressing region disposed on one side in the longitudinal direction and a second pressing region disposed on the other side in the longitudinal direction,

the shape of the longitudinal inner end edge of the first compressed region is different from the shape of the longitudinal inner end edge of the second compressed region.

4. The absorbent article according to claim 1 or 3,

the area of the first pressing region is larger than the area of the second pressing region.

5. The absorbent article according to claim 1 or 3,

the core pressing region has a pressing bulging portion that extends and bulges toward an inner side in the longitudinal direction along the longitudinal direction,

the pressing bulge is provided only in the first pressing region of the first pressing region and the second pressing region.

6. The absorbent article according to claim 5,

the extrusion bulging portions are arranged at intervals in the width direction,

the non-pressing region is provided between the pressing bulging portions.

7. The absorbent article according to claim 5,

the first crush zone is disposed at the rear end of the absorbent core.

8. The absorbent article according to claim 5,

the absorbent article has at least a body pressing part formed by compressing the absorbent core and a top sheet arranged on the skin surface side of the absorbent core in the thickness direction,

the body pressing portion overlaps with a part of the pressing bulging portion.

9. The absorbent article of claim 8,

the body pressing portion has: a first body pressing portion disposed on a side of the absorbent article where the first pressing region is located with respect to a center in a longitudinal direction of the absorbent article; and a second body pressing portion disposed on the side of the second pressing region with respect to the center in the longitudinal direction of the absorbent article,

the shape of the first body pressing portion is different from the shape of the second body pressing portion.

10. The absorbent article according to claim 1 or 3,

the absorbent core has: a high basis weight region provided at an end of the absorbent core in the longitudinal direction; and a low basis weight region which is located inward in the longitudinal direction from the high basis weight region and in which the basis weight of the absorbent material is lower than that of the high basis weight region,

the high basis weight region having a first high basis weight region where at least a portion of the first crush region overlaps and a second high basis weight region where at least a portion of the second crush region overlaps,

the first high basis weight regions have a greater area than the second high basis weight regions.

11. The absorbent article according to claim 5,

the absorbent core has: a high basis weight region provided at an end of the absorbent core in the longitudinal direction; and a low basis weight region which is located inward in the longitudinal direction from the high basis weight region and in which the basis weight of the absorbent material is lower than that of the high basis weight region,

the high basis weight region is provided in a region overlapping with the crush lobe,

the low basis weight region is provided in a region overlapping with a non-pressing region between the press-bulging portions.

Technical Field

The present invention relates to an absorbent article having a core pressing portion provided in an absorbent core.

Background

Patent document 1 discloses an absorbent article in which a core pressing portion is provided in an absorbent core. The core pressing portion of patent document 1 is in a dot shape or a linear shape, and is disposed at intervals in the longitudinal direction and the width direction. The core pressing portion is disposed over substantially the entire area of the absorbent core (fig. 1 and 6 of patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2014-68745

According to the absorbent article of patent document 1, the rigidity of the absorbent core can be improved over substantially the entire area of the absorbent core. However, since the rigidity of the absorbent core is high in substantially the entire region, the wearer may feel that the absorbent core is hard, and the wearing feeling may be reduced. Therefore, it is considered to narrow the range in which the core-pressing portion is provided. However, if the range in which the core-squeezing portion is provided is narrowed, there is a possibility that a problem may occur during production. More specifically, in manufacturing an absorbent article, generally, the absorbent core is transported in the longitudinal direction, and the absorbent article is continuously transported. Since the absorbent core is conveyed at a high speed, the rigidity of the absorbent core is reduced by narrowing the range in which the core pressing portion is provided, and the absorbent core may curl or twist during conveyance, and the absorbent core may not be conveyed properly.

Disclosure of Invention

The present invention has been made in view of the above problems, and provides an absorbent article capable of appropriately conveying an absorbent core while suppressing a reduction in wearing comfort due to the rigidity of the absorbent core.

An absorbent article according to one aspect includes: a length direction and a width direction orthogonal to each other; an absorbent core having an absorbent material; and a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction. The core crush zone has a first crush zone disposed at one end in the longitudinal direction of the absorbent core and a second crush zone disposed at the other end in the longitudinal direction of the absorbent core. A non-pressing region where the core pressing portion is not provided is provided between the first pressing region and the second pressing region. The shape of the longitudinal inner end edge of the first compressed region is different from the shape of the longitudinal inner end edge of the second compressed region.

An absorbent article according to another aspect includes: a length direction and a width direction orthogonal to each other; an absorbent core having an absorbent material; and a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction. The absorbent article has: a core pressing region provided with the core pressing portion at an end of the absorbent core in the longitudinal direction; and a non-extrusion region in which the core extrusion portion is not provided at a position inward in the longitudinal direction of the core extrusion region. The basis weight of the absorbent material in the core crush zone is higher than the basis weight of the absorbent material in an adjacent zone in the non-crush zone that is adjacent to the core crush zone.

Drawings

Fig. 1 is a plan view of the absorbent article of the embodiment as viewed from the skin surface side.

Fig. 2 is a plan view of the absorbent core of the embodiment viewed from the skin surface side, showing a core crush region.

Fig. 3 is a plan view of the absorbent core of the embodiment as viewed from the skin surface side, and shows regions of the absorbent material having different basis weights.

Description of reference numerals

1: absorbent article, 30: absorbent core, 31: first pressing region (core pressing region), 31S: first inner end edge, 32: second pressing region (core pressing region), 32S: second inner end edge, 35: non-compressed region, 36: extrusion bulge, 80: body pressing portion, 81: first body pressing portion, 82: second body pressing portion, 85: core extrusion portion, FL: imaginary line, R1: first region (high basis weight region), R11: first high basis weight region, R12: second high basis weight region, R2: second region (adjoining region, low basis weight region), R3: third region, R4: fourth region, R5: basis weight bulge, S1: front-side region, S2: rear side region, S3: crotch region, L: length direction, W: the width direction.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be made clear from the description of the present specification and the drawings.

An absorbent article according to one aspect includes: a length direction and a width direction orthogonal to each other; an absorbent core having an absorbent material; and a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction. The core crush zone has a first crush zone disposed at one end in the longitudinal direction of the absorbent core and a second crush zone disposed at the other end in the longitudinal direction of the absorbent core. A non-pressing region where the core pressing portion is not provided is provided between the first pressing region and the second pressing region. The shape of the longitudinal inner end edge of the first compressed region is different from the shape of the longitudinal inner end edge of the second compressed region. According to this aspect, the rigidity of the end portions in the longitudinal direction of the absorbent core can be improved by providing the first compressed region and the second compressed region. By increasing the rigidity of the end portions in the longitudinal direction of the absorbent core, it is possible to suppress troubles during conveyance and to appropriately convey the absorbent core. The shape of the inner edge of the first compressed region is different from the shape of the inner edge of the second compressed region, and one of the first compressed region and the second compressed region has higher rigidity than the other. By disposing the side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, the rigidity of the entire absorbent core can be suppressed as compared with a structure in which the rigidity is increased in both the first compressed region and the second compressed region in the same manner. Further, a non-compressed region is provided on the inner side in the longitudinal direction than the core compressed region. The rigidity of the absorbent core can be reduced in the non-compressed region, and the reduction in the wearing sensation can be suppressed. Further, since the shape of the inner edge of the first compressed region is different from the shape of the inner edge of the second compressed region, the wearing feeling can be improved when the user attaches the garment in the appropriate front-rear direction due to the difference in shape.

An absorbent article according to another aspect includes: a length direction and a width direction orthogonal to each other; an absorbent core having an absorbent material; and a core pressing region provided with at least a core pressing portion formed by compressing the absorbent core in a thickness direction. The absorbent article has: a core pressing region provided with the core pressing portion at an end of the absorbent core in the longitudinal direction; and a non-extrusion region in which the core extrusion portion is not provided at a position inward in the longitudinal direction of the core extrusion region. The basis weight of the absorbent material in the core crush zone is higher than the basis weight of the absorbent material in an adjacent zone in the non-crush zone that is adjacent to the core crush zone. According to this aspect, the rigidity of the end portions in the longitudinal direction of the absorbent core is increased by the core crush region, and the rigidity is increased by the relatively high basis weight. By increasing the rigidity of the end portions in the longitudinal direction of the absorbent core, it is possible to suppress troubles during conveyance and to appropriately convey the absorbent core. Further, the core pressing section is not provided at a position inward in the longitudinal direction of the core pressing region, and an adjacent region having a low basis weight of the absorbent material is provided. The rigidity of the absorbent core can be reduced in the adjacent region, and the reduction in the wearing sensation can be suppressed.

According to a preferred aspect, the core pressing region has a first pressing region disposed on one side in the longitudinal direction and a second pressing region disposed on the other side in the longitudinal direction. The shape of the longitudinal inner end edge of the first compressed region is different from the shape of the longitudinal inner end edge of the second compressed region. According to this aspect, the shape of the inner edge of the first compressed region is different from the shape of the inner edge of the second compressed region, and one of the first compressed region and the second compressed region has higher rigidity than the other. By disposing the side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, the rigidity of the entire absorbent core can be suppressed as compared with a structure in which the rigidity is increased in both the first compressed region and the second compressed region in the same manner.

According to a preferred mode, the area of the first pressing area is larger than the area of the second pressing area. According to this aspect, the area of the first compressed region is increased, and the rigidity of the first compressed region is increased. By disposing the first pressing region side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, the rigidity of the entire absorbent core can be suppressed as compared with a structure in which the rigidity is increased in both the first compressed region and the second compressed region in the same manner.

According to a preferred aspect, the core pressing region has a pressing bulging portion that extends and bulges toward an inner side in the longitudinal direction along the longitudinal direction. The pressing bulge is provided only in the first pressing region of the first pressing region and the second pressing region. According to this aspect, by providing the crush lobes, the rigidity of the absorbent core can be increased over a wide range in the longitudinal direction in the first crush region. Further, since the second crush zone is not provided with the crush bulges, the rigidity of the entire absorbent core can be suppressed, and the wearing sensation can be suppressed from being reduced.

According to a preferred embodiment, the press-bulging portions are arranged at intervals in the width direction. The non-pressing region is provided between the pressing bulging portions. By providing the crush lobes at intervals in the width direction, the rigidity of the absorbent core can be improved by the crush lobes, and the deterioration of the wearing feeling can be suppressed by ensuring the flexibility by the non-crush regions between the crush lobes.

According to a preferred embodiment, the first compressed region is disposed at the rear end of the absorbent core. The rear end portion of the absorbent article is easily subjected to pressure from the buttocks when sitting, etc. By providing the first crush zone and the crush bulge in the rear region, the rigidity of the rear region can be improved, and deformation by pressure of the wearer can be suppressed. In addition, since the press bulging portion extends inward in the longitudinal direction along the longitudinal direction, a deformation base point extending in the longitudinal direction is formed in the rear region. Therefore, the rear region is likely to follow the unevenness of the body due to the swelling of the buttocks and the like in the cross section of the body extending in the width direction. The fit of the back region can be improved, and discomfort and leakage during wearing can be suppressed.

According to a preferred aspect, the absorbent article includes at least a body pressing portion formed by compressing the absorbent core and a top sheet disposed on the skin surface side of the absorbent core in the thickness direction. The body pressing portion overlaps with a part of the pressing bulging portion. According to this aspect, the absorbent article deforms with the body squeezing portion as a base point when the body pressure is received from the lateral direction. In this case, since the body pressing portion and a part of the extrusion bulging portion overlap, the extrusion bulging portion also serves as a starting point in conjunction with the body pressing portion, and the deformation of the absorbent article is easily guided, and the shape and the movement of the body are easily followed. Further, since the body pressing portion overlaps with a part of the crush bulge and the body pressing portion does not overlap with the entire crush bulge, it is possible to suppress local excess in rigidity of the absorbent article and to ensure flexibility of the entire absorbent article.

According to a preferred aspect, the body pressing portion includes: a first body pressing portion disposed on a side of the absorbent article where the first pressing region is located with respect to a center in a longitudinal direction of the absorbent article; and a second body pressing portion disposed on the side of the second pressing region with respect to the center in the longitudinal direction of the absorbent article. The shape of the first body pressing portion is different from the shape of the second body pressing portion. According to this aspect, the rigidity of one side can be increased and the rigidity of the other side can be suppressed, and the rigidity of the entire absorbent article can be suppressed. Further, since the shape of the first body pressing portion is different from the shape of the second body pressing portion, the user can distinguish the front and rear of the absorbent article from the difference in shape, and the operability in wearing can be improved. Further, since the absorbent article can be appropriately attached in the front-rear direction, the absorbent article can be reliably attached to the body, and the uncomfortable feeling and leakage during wearing can be suppressed.

According to a preferred mode, the absorbent core has: a high basis weight region provided at an end of the absorbent core in the longitudinal direction; and a low basis weight region which is located inward in the longitudinal direction from the high basis weight region, and in which the basis weight of the absorbent material is lower than that of the high basis weight region. The high basis weight region has a first high basis weight region where at least a portion of the first crush region overlaps and a second high basis weight region where at least a portion of the second crush region overlaps. The first high basis weight regions have a greater area than the second high basis weight regions. The area of the first high basis weight region becomes large, and the rigidity on the first pressing region side becomes high. By disposing the first pressing region side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, the rigidity of the entire absorbent core can be suppressed as compared with a structure in which the rigidity is increased in both the first compressed region and the second compressed region in the same manner.

According to a preferred mode, the absorbent core has: a high basis weight region provided at an end of the absorbent core in the longitudinal direction; and a low basis weight region which is located inward in the longitudinal direction from the high basis weight region, and in which the basis weight of the absorbent material is lower than that of the high basis weight region. The high basis weight region is provided in a region overlapping with the crush lobe. The low basis weight region is provided in a region overlapping with a non-pressing region between the press-bulging portions. According to this aspect, the rigidity of the region in which the crush lobes are provided can be further improved by the high basis weight region. Further, since the low basis weight region is provided in the non-compressed region, the flexibility of the non-compressed region can be ensured, and the reduction in the wearing sensation can be suppressed.

(2) General structure of absorbent article

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the scale of each dimension and the like are different from those in reality. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other. In comparison of the length and the positional relationship in the present invention, an absorbent article in an extended state in which the absorbent article is extended to a state in which wrinkles due to the stretchable member are not formed is used unless otherwise mentioned.

Fig. 1 is a plan view of an absorbent article 1 according to the embodiment as viewed from the skin surface side. The absorbent article 1 is a sanitary napkin. The absorbent article 1 of the present invention may be an absorbent article 1 used by being attached to a wearing article such as underwear, and may be, for example, a light incontinence pad or a panty liner. Fig. 2 is a plan view showing a core pressing portion 85 of the absorbent core 30. Fig. 3 is a plan view showing regions of the absorbent material having different basis weights. Here, the "skin surface side" corresponds to a side facing the skin of the wearer during use. The "non-skin-side" corresponds to a side facing the skin of the wearer during use.

The absorbent article 1 has a longitudinal direction L and a width direction W. The longitudinal direction L is a direction extending from the front side (ventral side) to the back side (dorsal side) of the wearer or a direction extending from the back side to the front side of the wearer. The width direction W is a direction orthogonal to the longitudinal direction L. The absorbent article 1 has a thickness direction extending toward the skin surface side and the non-skin surface side of the wearer. The absorbent article 1 includes a front region S1, a rear region S2, and a crotch region S3. The crotch region S3 is disposed across the center of the absorbent article in the longitudinal direction L, and includes an excretory opening contact portion facing an excretory opening (e.g., vaginal opening) of the wearer. When the absorbent article 1 is attached to underwear, the crotch region S3 is located in the crotch portion of the underwear and is a region disposed in the crotch of the wearer, i.e., between the legs of the wearer. The front region S1 is located more anteriorly than the crotch region S3. The front end edge of the front side region S1 defines the front end edge of the absorbent article 1. The rear region S2 is located more rearward than the crotch region S3. The rear end edge of the rear region S2 defines the rear end edge of the absorbent article 1.

The absorbent article may have wing portions 3. The wing part 3 may be disposed in the crotch region S3. The leading edge of the wing portion 3 is defined by the root of the flank 3 and corresponds to the portion located on the leading side among the 2 portions recessed innermost in the width direction W. The front end edge of the flap 3 may define the boundary between the crotch region S3 and the front region S1. The rear end edge of the wing portion 3 is defined by the root of the flank 3 and corresponds to the portion located on the rear side out of the 2 portions recessed innermost in the width direction W. The rear end edge of the side flap 3 may define the boundary between the crotch region S3 and the rear region S2.

The absorbent article 1 includes an absorbent core 30 that absorbs body fluid, a liquid-permeable top sheet 10 disposed on the skin surface side of the absorbent core 30, and a liquid-impermeable back sheet (not shown) disposed on the non-skin surface side of the absorbent core 30. The topsheet 10 faces the wearer's skin and the backsheet faces the opposite side of the wearer's skin. The absorbent core 30 is disposed between the topsheet 10 and the backsheet.

The topsheet 10 may cover at least the central portion of the absorbent core 30 in the width direction W. The topsheet 10 may extend in the longitudinal direction L from the front side region S1 to the back side region S2. The top sheet 10 may be formed of a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film. The top sheet 10 may be formed by stacking a plurality of sheets, or may have an auxiliary sheet. The backsheet is a liquid impermeable sheet. The back sheet may be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene or the like, an air-permeable resin film, a sheet obtained by bonding an air-permeable resin film to a nonwoven fabric such as spunbond or spunlace, or the like. The absorbent core 30 is disposed in at least the crotch region S3. In addition, the absorbent core 30 may also extend from the crotch region S3 to the front region S1. The absorbent core 30 has at least pulp as an absorbent material for absorbing liquid. The absorbent core 30 may also be surrounded by a core cladding. The absorbent material constituting the absorbent core 30 can be formed of, for example, pulp and a Super Absorbent Polymer (SAP). The core wrap layer can be formed of, for example, a nonwoven fabric or a sheet of crepe paper. As shown in fig. 2, the absorbent core 30 is provided with a core pressing portion 85 in which the absorbent core 30 is compressed in the thickness direction. The structure of the absorbent core 30 will be described in detail later. The absorbent article 1 may have at least a body pressing portion 80 formed by compressing the absorbent core 30 and the top sheet 10 in the thickness direction. The body pressing portions 80 are disposed in a dot shape at intervals.

The absorbent article 1 of the present embodiment is configured to be able to appropriately convey the absorbent core 30 while suppressing a decrease in the wearing sensation due to the rigidity of the absorbent core 30. Next, a structure for appropriately conveying the absorbent core 30 while suppressing a decrease in wearing comfort will be described in detail. First, the absorbent core 30 will be described in detail. The absorbent article 1 has a core pressing region (first pressing region 31 and second pressing region 32) provided with a core pressing portion 85 at the absorbent core 30. Fig. 2 is a plan view of the absorbent core 30 as viewed from the skin surface side, showing the core crush zone. The core crush zone is a zone in which the core crush portion 85 is provided at an end of the absorbent core in the longitudinal direction L. The core crush zone has a first crush zone 31 disposed at one end of the absorbent core 30 in the longitudinal direction L and a second crush zone 32 disposed at the other end of the absorbent core 30 in the longitudinal direction L. In the present embodiment, one side in the longitudinal direction L is the rear side, and the other side in the longitudinal direction L is the front side. Therefore, the first compressed region 31 is a region where the core-compressed portion 85 is provided at the rear end edge 30R of the absorbent core 30. The first compressed region 31 of the present embodiment is a region that is disposed along the rear end edge 30R of the absorbent core 30 and extends in the width direction W. The second compressed region 32 is a region where the core-compressed portion 85 is provided at the front end edge 30F of the absorbent core 30. The second compressed region 32 of the present embodiment is a region that is disposed along the front end edge 30F of the absorbent core 30 and extends in the width direction W. In addition, the absorbent core 30 may be provided with a length-compressed region 33 in addition to the core-compressed region. The length pressing region 33 is a region where the core pressing portion 85 is provided, and is disposed between the first pressing region 31 and the second pressing region 32. The longitudinal compressed region 33 of the present embodiment is a region that is disposed along the outer edge 30E of the absorbent core 30 and extends in the longitudinal direction L. The first crush zone 31, the second crush zone 32, and the length crush zone 33 are connected to each other and arranged in a ring shape along the outer edge of the absorbent core 30.

Between the first pressing region 31 and the second pressing region 32, a non-pressing region 35 where the core pressing portion 85 is not provided is provided. The non-compressed region 35 is disposed between the left and right long compressed regions 33. The non-compressed region 35 is a region in the absorbent core 30 other than the first compressed region 31, the second compressed region 32, and the length compressed region 33. The core extrusion region includes not only a region where the core extrusion portion 85 is formed throughout but also a region where the core extrusion portion 85 is not formed in a certain pattern in the form where the core extrusion portion 85 is formed in the pattern. Specifically, in the honeycomb shape in which the regular hexagons are combined as in the present embodiment, the core crush portion 85 is not formed inside the side edges constituting the regular hexagons, but the core crush region is constituted. In the embodiment in which the core extruded portion 85 is provided in a shape of a plurality of points, the area between the points does not form the core extruded portion 85, but constitutes the core extruded area. The core crush region and the length crush region 33 of the present embodiment are disposed along the outer edge (including the front end edge, the rear end edge, and the outer edge) of the absorbent core 30, and the non-crush region 35 is disposed inward (inward in the length direction L and inward in the width direction W) of the core crush region and the length crush region 33 in plan view.

The shape of the first inner edge 31S, which is the inner edge in the longitudinal direction L of the first compressed region 31, is different from the shape of the second inner edge 32S, which is the inner edge in the longitudinal direction L of the second compressed region 32. The first inner end edge 31S is constituted by a boundary of the first crushed area 31 and the non-crushed area 35. The first inner edge 31S of the present embodiment includes: a portion extending in the width direction W including the leading edge of the first compressed region 31; and a portion extending in the longitudinal direction L at a later-described extrusion bulging portion. The second inner end edge 32S is constituted by a boundary of the second crushed area 32 and the non-crushed area 35. The second inner end edge 32S of the present embodiment is an arc-shaped edge that includes the rear end edge of the second compressed region 32 and extends in the width direction W. The length of the first inner end edge 31S may be different from the length of the second inner end edge 32S.

By providing the first compressed region 31 and the second compressed region 32, the rigidity of the end portions in the longitudinal direction L of the absorbent core 30 can be improved. Generally, when the absorbent core 30 is conveyed in the manufacturing process, the absorbent core 30 is conveyed at a high speed in the longitudinal direction L. At this time, the absorbent core 30 is likely to curl or twist at the end of the absorbent core 30 located on the downstream side in the transport direction in the longitudinal direction L. Further, when there is a gap between the conveyance means such as a conveyor that conveys the absorbent cores 30, if the absorbent cores 30 are deformed due to low rigidity of the absorbent cores 30, there is a possibility that the absorbent cores 30 cannot be smoothly transferred. By increasing the rigidity of the end portions of the absorbent core 30 in the longitudinal direction L, troubles during conveyance can be suppressed, and the absorbent core 30 can be appropriately conveyed. The shape of the first inner edge 31S is different from the shape of the second inner edge 32S, and one of the first compressed region 31 and the second compressed region 32 has higher rigidity than the other. By disposing the side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, as compared with a structure in which the rigidity is increased similarly in both the first compressed region 31 and the second compressed region 32, the rigidity of the entire absorbent core 30 can be suppressed. Further, a non-compressed region 35 is provided at a position inward in the longitudinal direction L with respect to the core compressed region. In the non-compressed region 35, the rigidity of the absorbent core 30 can be reduced, and a reduction in the wearing sensation can be suppressed. Further, since the shape of the first inner edge 31S of the first compressed region 31 is different from the shape of the second inner edge 32S of the second compressed region 32, the wearing feeling can be improved when the user attaches the article in the appropriate front-rear direction due to the difference in shape.

The area of the first pressing region 31 may be larger than the area of the second pressing region 32. The area of the first pressed region 31 is large, and the rigidity of the first pressed region 31 becomes high. By disposing the first pressing region 31 side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, as compared with a structure in which the rigidity is increased similarly in both the first compressed region 31 and the second compressed region 32, the rigidity of the entire absorbent core 30 can be suppressed. In addition, the length of the first inner end edge 31S may be longer than the length of the second inner end edge 32S. By disposing the first pressing region 31 side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. In addition, the core crush zone and the length crush zone 33 can be disposed at least a portion of the outer edge of the absorbent core 30. The outer edges of the absorbent core 30 are more likely to be in stronger contact with air during transport. By providing the core pressing portion 85 at the outer edge of the absorbent core 30, it is possible to further suppress a trouble during conveyance of the absorbent core 30.

The core pressing region may have a pressing bulge portion 36 extending and bulging toward the inner side of the longitudinal direction L in the longitudinal direction L. The press bulge portion 36 may have a straight line portion extending parallel to the length direction L. The pressing bulge 36 may be provided only to the first pressing region 31 of the first and second pressing regions 31 and 32. That is, the pressing bulge portion 36 is provided in the first pressing region 31 and is not provided in the second pressing region 32. By providing the crush lobes 36, the rigidity of the absorbent core 30 can be improved over a wide range in the longitudinal direction L in the first crush region 31. Further, since the bulge portion 36 is not provided on the second compressed region 32 side, the rigidity of the entire absorbent core 30 can be suppressed, and the wearing sensation can be suppressed from being lowered.

The squeeze bulging portions 36 may be arranged with a space in the width direction W. Non-compression regions 35 may be provided between the compression bulges 36. The pair of bulge portions 36 in the present embodiment is provided on both sides across the center of the absorbent core 30 in the width direction W. By providing the bulge portions 36 at intervals in the width direction W, the rigidity of the absorbent core 30 can be improved by the bulge portions 36, and the softness can be ensured by the non-compressed regions 35 between the bulge portions 36, thereby suppressing deterioration of the wearing feeling. The widthwise length of the non-pressing region 35 located between the press bulges 36 may be longer than the widthwise length W36 of each press bulge 36. It is easier to ensure flexibility based on the non-compressed region 35.

The first crush zone 31 can be disposed at the rear end of the absorbent core 30. The rear end portion of the absorbent core 30 is a region that includes the rear end edge of the absorbent core 30 and extends from the rear end portion to the front side over a predetermined range (for example, a length in the longitudinal direction is 10 mm). The rear end portion of the absorbent article 1 is easily twisted by pressure from the buttocks when sitting, or the like. By providing the first crush zone 31 including the crush lobes 36 in the rear side region S2, the rigidity of the rear side region S2 can be increased, and deformation due to pressure of the wearer can be suppressed. In addition, since the crush lobes 36 extend inward in the longitudinal direction L along the longitudinal direction L, the rear region S2 is formed with a deformation base point extending in the longitudinal direction L. Therefore, the rear region S2 is likely to follow the unevenness of the body formed by the swelling of the buttocks and the like in the cross section of the body extending in the width direction W. The fit of the rear region S2 can be improved, and discomfort and leakage during wearing can be suppressed. In the present embodiment, the first crush zone 31 is disposed at the rear end of the absorbent core 30 and the second crush zone 32 is disposed at the front end of the absorbent core 30, but in a modified example, the first crush zone 31 may be disposed at the front end of the absorbent core 30 and the second crush zone 32 may be disposed at the rear end of the absorbent core 30. The absorbent core 30 may be conveyed so that the front end thereof is located downstream in the conveyance direction.

The core pressing portion 85 may have a honeycomb shape in which regular hexagons are combined. Since the sides 851 constituting the regular hexagon extend in multiple directions, they are easily and flexibly deformed. Further, the core pressing portion 85 has a dot portion 852 separated from a side 851 of the regular hexagon on the inner side of the regular hexagon. Since the dot-shaped portions are provided, the rigidity of the inner side of the regular hexagon can be increased, the honeycomb shape is flexibly deformed, and the rigidity is locally increased, whereby the distortion of the absorbent core 30 can be suppressed.

The pressing bulge portion 36 may extend inward in the longitudinal direction L from an imaginary line FL connecting outer edges of the first pressing region 31 to each other. According to this structure, the rigidity of the region on the inner side in the longitudinal direction L than the first compressed region 31 arranged along the rear end edge of the absorbent core 30 can be increased, and not only the curl of the rear end portion of the absorbent core 30 can be suppressed, but also the curl of the absorbent core 30 can be suppressed in a wide range extending from the rear end portion to the inner side in the longitudinal direction L. In addition, the length W36 in the width direction W of the pressing bulge 36 may be longer than the length W33 in the width direction W of the long pressing region 33. Since the length W36 in the width direction W of the crush bulge 36 is relatively long, the curl of the absorbent core 30 can be suppressed in a wide range in the width direction W of the absorbent core 30. Further, since the length W33 in the width direction W of the longitudinal compressed region 33 is relatively short, the outer edge 30E of the absorbent core 30 can be suppressed from becoming too hard, and a feeling of discomfort when the outer edge 30E of the absorbent core 30 comes into contact with the legs can be suppressed. Note that, in the aspect in which the length W36 in the width direction W of the squeeze bulge 36 and the length W33 in the width direction W of the long squeeze region 33 are changed, the maximum widths may be compared.

The first inner end edge 31S may have: a side portion 31S1 extending from the outer edge of the first inner edge 31S toward the inside in the width direction W toward the outside in the longitudinal direction L; and an inner portion 31S2 extending inward in the longitudinal direction L from an inner edge of the side portion 31S1 toward the inner side in the width direction W. The inner portion 31S2 may extend inward in the longitudinal direction L from an imaginary line FL connecting outer edges of the first pressed region 31 to each other. The inner portion 31S2 may be linear extending in the longitudinal direction L. With such a configuration, the curl of the absorbent core 30 can be suppressed over a wide range extending inward in the longitudinal direction L from the rear end portion of the absorbent core 30.

The body pressing portion 80 may overlap a portion of the pressing bulge portion 36. In the region where the body pressing portion 80 overlaps the pressing bulge portion 36, the core pressing portion 85 and the body pressing portion 80 are formed, and the absorbent core 30 is compressed a plurality of times. The body pressing portion 80 of the present embodiment is in a dot shape. The plurality of dot-shaped body pressing portions 80 overlap the pressing bulge portion 36. When the absorbent article is subjected to body pressure from the lateral direction during wearing, the absorbent article deforms with the body pressing portion 80 as a base point. At this time, since the body pressing portion 80 overlaps with a part of the pressing bulge portion 36, the pressing bulge portion 36 also serves as a starting point in conjunction with the body pressing portion 80, and easily guides the deformation of the absorbent article 1 and easily follows the shape and movement of the body. Further, since the body pressing portion 80 overlaps a part of the crush lobes 36 and the body pressing portion 80 does not overlap the entire crush lobes 36, it is possible to suppress local excess in rigidity of the absorbent article 1 and ensure flexibility of the entire absorbent article 1.

The body pressing portion 80 includes: a first body pressing portion 81 disposed on the first pressing region 31 side with respect to an article longitudinal center 1CL that is the center of the absorbent article in the longitudinal direction L; and a second body pressing portion 82 disposed on the second pressing region 32 side of the article longitudinal center 1 CL. The first body pressing portion 81 of the present embodiment is a body pressing portion 80 located on the rear side of the article longitudinal center 1CL, and the second body pressing portion 82 is a body pressing portion 80 located on the front side of the article longitudinal center 1 CL. The first body pressing portion 81 overlaps with the pressing bulging portion 36. Therefore, the rigidity of the absorbent core 30 on the first pressing region 31 side having the pressing bulge portion 36 can be improved, and the base point of deformation formed by the pressing bulge portion 36 is provided on the first pressing region 31 side, so that the fit to the body can be improved.

The shape of the first body pressing part 81 and the shape of the second body pressing part 82 may be different. With this configuration, the rigidity of one side can be increased while the rigidity of the other side can be suppressed, and the rigidity of the entire absorbent article 1 can be suppressed, so that the entire absorbent article 1 can be designed with good balance. Further, since the shape of the first body pressing portion 81 is different from the shape of the second body pressing portion 82, the user can distinguish the front and rear of the absorbent article 1 from the difference in shape, and the operability during wearing can be improved. Further, since the absorbent article can be appropriately attached in the front-rear direction, the absorbent article can be reliably attached to the body, and the uncomfortable feeling and leakage during wearing can be suppressed. In the present embodiment, the area of the second body pressing portion 82 is larger than the area of the first body pressing portion 81, and the area of the first pressing region 31 is larger than the area of the second pressing region 32. Therefore, the rigidity of the rear end portion of the absorbent core 30 can be increased by the first compressed region 31, and the rigidity of the front end portion of the absorbent core 30 can be increased by the second body compressed portion 82, so that the rigidity can be increased in a well-balanced manner as the entire absorbent article.

The area of the first body pressing part 81 may be smaller than the area of the second body pressing part 82. Since the area of the first pressing region 31 is larger than the area of the second pressing region 32 and the area of the first body pressing portion 81 is smaller than the area of the second body pressing portion 82, the rigidity of the rear end portion of the absorbent core can be improved by the core pressing region and the rigidity of the front end portion of the absorbent article can be improved by the body pressing portion 80. Therefore, the rigidity of the entire absorbent article can be designed with good balance while suppressing troubles during conveyance of the absorbent core. Therefore, when the absorbent article is attached, it is possible to suppress a problem such as the front end portion or the rear end portion of the absorbent article being locally hard or soft.

The absorbent core 30 may have regions of absorbent material of different basis weights. Fig. 3 is a plan view of the absorbent core 30 as viewed from the skin surface side, and shows regions of different basis weights of the absorbent material. The regions of the absorbent material differing in basis weight have: first region R1And is provided at the end in the longitudinal direction L of the absorbent core 30; a second region R2 adjacent to the first region R1 and located inward of the first region R1 in the longitudinal direction L; a third region R3 located inward of the second region R2 in the longitudinal direction L and at the center of the absorbent core 30 in the width direction W; and a fourth region R4 located inward of the second region R2 in the longitudinal direction L and laterally of the absorbent core 30 in the width direction W. The third region R3 is sandwiched by the right and left fourth regions R4. In fig. 3, the first region R1 to the fourth region R4 are denoted by different oblique lines. The basis weights of the absorbent materials of the first to fourth regions R1 to R4 are different. In the present embodiment, the basis weight of the first region R1 is 250g/m²The basis weight of the second region R2 is 200g/m²The basis weight of the third region R3 is 600g/m²The basis weight of the fourth region R4 was 280g/m². The basis weight of the second regions R2 < the basis weight of the first regions R1 < the basis weight of the fourth regions R4 < the basis weight of the third regions R3.

Here, the "basis weight of the absorbent core" in the present specification can be measured by the following method. In the case of the mode of housing a plurality of absorbent articles in a package, 5 absorbent articles were taken out from the same package, and a sample was used which was left for 12 hours in an atmosphere of 20 ℃ ± 2 ℃ and a relative humidity of 60% ± 5% RH in this state. In an absorbent article packaged in a single package sheet or the like, a package body is opened, the folded absorbent article is unfolded, a portion to be measured for basis weight is cut out from the absorbent article, and the weight of the cut portion is measured. Next, the absorbent core was removed from the cut-out portion, and the weight of the absorbent core other than the absorbent core such as the top sheet and the back sheet was measured. When the absorbent core remained with an adhesive or the like, the entire amount was removed with toluene or the like, and the measurement was performed after drying the absorbent core at room temperature for 24 hours. The weight other than the absorbent core was removed from the weight of the cut-out portion, and the basis weight was calculated based on the area of the portion where the basis weight was measured. In the case where there are a plurality of regions for measuring the basis weight of the absorbent core and the plurality of regions are covered with the same sheet (top sheet, core wrap, or the like), the basis weight of the sheet can be regarded as the same, and therefore, the basis weight of the absorbent core may be measured without peeling the sheet after the portion for measuring the basis weight is cut out from the absorbent article.

The basis weight of the absorbent material of the first region R1 is lower than the basis weight of the absorbent material of the second region R2. The first regions R1 constitute "high basis weight regions" of the present invention and the second regions R2 constitute "low basis weight regions" of the present invention. The "high basis weight region" in the present invention may have a higher basis weight than the adjacent region, and may have a lower basis weight than the regions (third region and fourth region) located on the inner side in the longitudinal direction than the adjacent region. The first region R1 as the high basis weight region has a first high basis weight region R11 where at least a part of the first pressed region 31 overlaps and a second high basis weight region R12 where at least a part of the second pressed region 32 overlaps. The first high basis weight region R11 may overlap at least a part of the first compressed region 31, or may overlap the entire region of the first compressed region 31. The first high basis weight region R11 of the present embodiment may coincide with the range of the first pressed region 31. The second high basis weight region R12 may overlap at least a part of the second pressing region 32, and may overlap the entire region of the second pressing region 32. The second high basis weight region R12 of the present embodiment may coincide with the range of the second pressed region 32. The first high basis weight region R11 of the present embodiment is disposed at the rear end of the absorbent core 30, and the second high basis weight region R12 is disposed at the front end of the absorbent core 30. Therefore, the basis weight of the absorbent material in the core crush zone (the first crush zone 31 and the second crush zone) is higher than the basis weight of the absorbent material in the adjacent zone adjacent to the core crush zone in the non-crush zone 35. By having the first high basis weight region R11 and the second high basis weight region R12, the rigidity of the region where the core pressing portion 85 is provided can be further increased, and the rigidity of the end portion of the absorbent core 30 can be further increased. In addition, the basis weight of the absorbent material in at least one of the first compressed region 31 and the second compressed region 32 may be higher than the basis weight of the absorbent material in the adjacent region. In the present embodiment, the basis weight of the absorbent material in both the first and second compressed regions 31 and 32 is higher than the basis weight of the absorbent material in the adjacent region.

The area of the first high basis weight region R11 may be larger than the area of the second high basis weight region R12. The first high basis weight region R11 has a large area, and the rigidity on the first pressing region 31 side increases. By disposing the first pressing region 31 side having relatively high rigidity on the downstream side in the conveying direction, it is possible to further suppress a trouble during conveyance. Further, the rigidity of the entire absorbent core 30 can be suppressed as compared with a structure in which the rigidity is increased in the same manner in both the first compressed region 31 and the second compressed region 32.

The first region R1 as the high basis weight region may be provided in a region overlapping with the crush bulge 36. The first region R1 may overlap at least a part of the squeeze bulge 36, or may overlap the entire region of the squeeze bulge 36. The rigidity of the region where the crush bulge 36 is provided can be further improved by the high basis weight region. The second region R2 as the low basis weight region may be provided in a region overlapping with the non-pressing region 35 between the press bulges 36. The second region R2 may overlap at least a part of the non-compressed region 35, or may overlap the entire non-compressed region 35. Since the low basis weight region is provided in the non-compressed region 35, the flexibility of the non-compressed region 35 can be ensured, and the reduction in the wearing sensation can be suppressed.

It is also possible that the basis weight of the absorbent material in the first compressed region 31 is higher than the basis weight of the absorbent material in the adjoining region of the non-compressed region 35 adjoining the first compressed region 31, and the basis weight of the absorbent material in the second compressed region 32 is higher than the basis weight of the absorbent material in the adjoining region of the non-compressed region 35 adjoining the second compressed region 32. In the present embodiment, the range of the first region R1 coincides with the range of the first compressed region, the range of the first region R1 coincides with the range of the second compressed region 32, and the basis weight of the absorbent material in the first compressed region 31 and the second compressed region 32 is the basis weight of the absorbent material in the first region R1. The second region in the present embodiment is adjacent to the first region, and constitutes the "adjacent region" in the present invention. The end portions in the longitudinal direction L of the absorbent core 30 are increased in rigidity by the first compressed region 31 and the second compressed region 32, and are increased in rigidity due to the higher basis weight. By increasing the rigidity of the end portions of the absorbent core 30 in the longitudinal direction L, troubles during conveyance can be suppressed, and the absorbent core 30 can be appropriately conveyed. Further, the core pressing portion 85 is not provided at a position inward in the longitudinal direction L from the first pressing region 31 and the second pressing region 32, and the basis weight of the absorbent material is low. The rigidity of the absorbent core 30 can be reduced in the adjacent region, and the reduction in the wearing sensation can be suppressed.

The first region R1, which is a high basis weight region, has a basis weight bulging portion R5 that extends and bulges inward in the longitudinal direction L along the longitudinal direction L. The basis weight bulge R5 may be provided only in the first high basis weight region R11 of the first high basis weight region R11 and the second high basis weight region R12. That is, the basis weight bulge R5 is provided in the first high basis weight region R11 and is not provided in the second high basis weight region R12. By providing the basis weight bulge portion R5, the rigidity of the absorbent core 30 can be improved in a wide range in the longitudinal direction L in the first high basis weight region R11. Further, since the basis weight bulging portions R5 are not provided in the second high basis weight region R12, the rigidity of the entire absorbent core 30 can be suppressed, and a reduction in the wearing sensation can be suppressed.

The basis weight bulging portions R5 may be arranged at intervals in the width direction W. A second region R2 as a low basis weight region may be provided between the basis weight bulge portions R5. The basis weight bulge portion R5 of the present embodiment coincides with the range of the extrusion bulge portion 36, and the second region R2 as a low basis weight region is disposed in the non-extrusion region 35. By providing the basis weight bulging portions R5 at intervals in the width direction W, the rigidity of the absorbent core 30 can be improved by the basis weight bulging portions R5, and the flexibility can be ensured by the low basis weight regions (second regions) between the basis weight bulging portions R5, thereby suppressing deterioration in the wearing feeling.

While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

It is noted that japanese patent application No. 2020-102490, filed on 12/6/2020, is incorporated herein by reference in its entirety.