JP6576205B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a sanitary napkin.

Absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and cages are known. Among the absorbent articles, sanitary napkins are particularly pressed against the wearer's body by underwear and fit to the wearer's body (Patent Document 1 below). An absorbent article such as a sanitary napkin has a top sheet, a back sheet, and an absorbent body. The absorber is provided between the top sheet and the back sheet. The absorber has a middle and high portion protruding in a convex shape on the skin contact surface side. The middle-high portion is a part of the absorber that is thicker than the region other than the middle-high portion. The middle and high portions are separately provided in front and rear of the absorbent article. A bending start point is provided between the front middle-high part and the rear middle-high part. The starting point of bending is
It is a recessed part for joining a surface sheet and an absorber to each other by embossing.

JP 2006-239162 A

In the absorbent article described in Patent Document 1, the middle part of the front is arranged in the crotch of the wearer, that is, the area facing the vaginal opening, and the middle part of the rear is arranged in a crack in the buttock above the crotch of the wearer. Is done. Thereby, the absorber is fitted along the crack of the buttocks.

However, in the posture in which the wearer has slept, the rear mid-high portion is disposed directly below the wearer's buttocks, that is, between the buttocks and the floor. The mid-high portion constitutes a particularly rigid region. Therefore, the wearer tends to feel uncomfortable in the sleeping posture.

Thus, an absorbent article that does not feel uncomfortable in a sleeping position and that allows the absorbent body to easily fit along the crack is desired.

An absorbent article according to one aspect includes a front-rear direction and a width direction orthogonal to each other, an excretion opening contact area facing the excretion opening of the wearer, and a rear side area located on the rear side of the excretion opening contact area An absorber disposed at least in the excretory opening contact area and the rear side area, and the absorber extends in the width direction between the excretion opening contact area and the rear side area. A first low-weight area, and a second low-weight area extending in the front-rear direction along a center line connecting the centers in the width direction in the rear side area. The area is connected to the first low weight area.

Here, the “low-weight area” means an area composed of an absorbent core having a lower basis weight than the surrounding absorbent core, or an area having no absorbent core (that is, an area having zero basis weight). .

The absorbent article which concerns on another aspect extends in the outer side of the said width direction rather than the outer edge of the said absorber in the said width direction in the front-back direction and the width direction orthogonal to each other, and the said width direction, and can be turned back at the time of use A wing, a wing region that is a region between a front end edge of the wing in the front-rear direction and a rear end edge of the wing, and a rear side region located on the rear side of the wing region, The absorbent body has a first low weight area extending in the width direction on the rear side from the center of the wing in the front-rear direction and on the front side of the center of the rear side area in the front-rear direction, and the rear side area. A second low weight area extending to the rear side from the center of the rear side area in the front-rear direction along a center line connecting the centers in the width direction, and the second low weight area is The first low weight area and It wants.

According to the above aspect, it is possible to provide an absorbent article in which it is difficult to feel uncomfortable in a sleeping posture and the absorber can be easily fitted along the rupture.

It is a top view of an absorptive article in one embodiment. It is a top view of the absorbent article seen from the opposite side to FIG. It is sectional drawing of the absorbent article along the 3A-3A line | wire of FIG. It is a top view of the absorber in one embodiment. It is a perspective view of the absorbent article in use. It is typical sectional drawing in alignment with the 6A-6A line | wire of FIG. 1 of the absorbent article in use. It is typical sectional drawing in alignment with the 7A-7A line | wire of FIG. 1 of the absorbent article in use. It is typical sectional drawing along the 3A-3A line | wire of FIG. 1 of the absorbent article in use. It is a top view of the absorbent article folded along the fold line FL of FIG. It is a typical side view of the absorbent article folded along the fold lines F1-F3 of FIG.

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. The absorbent article may be any absorbent article, such as a panty liner (corimono sheet), a sanitary napkin, or an incontinence pad. In the following embodiments, a disposable sanitary napkin will be described as an example of an absorbent article.

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 ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Overall Configuration of Absorbent Article FIG. 1 is a plan view of the absorbent article in one embodiment. FIG. 2 is a plan view of the absorbent article as seen from the side opposite to FIG. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG.

The absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (abdomen side) of the wearer to the rear side (back side), or a direction extending from the rear side of the wearer to the front side. The width direction W is a direction orthogonal to the front-rear direction L. The thickness direction T is a direction extending from the wearer's skin side T1 to the non-skin side T2, and is a direction orthogonal to the front-rear direction L and the width direction W. The skin side T1 corresponds to the side facing the wearer's skin during use. The non-skin surface side T2 corresponds to the side opposite to the skin surface side T1, that is, the side facing away from the wearer's skin during use.

The absorbent article 1 has an excretion opening contact area S1, a front side area S2, and a rear side area S3. The excretion opening contact area S1 is an area facing the excretion opening (for example, vaginal opening) of the wearer. When the absorbent article is attached to the underwear, the excretion opening contact area S1 is located in the crotch part of the underwear. That is, the excretion opening contact area is an area disposed between the wearer's crotch, that is, between the wearer's legs.

The front side area S2 is located in front of the excretory opening contact area S1. The front edge of the front region S2 defines the front edge of the absorbent article 1. The rear side region S3 is located behind the excretory opening contact region S1. The rear edge of the rear side region S3 defines the rear edge of the absorbent article 1. The length in the front-rear direction L of the rear side region S3 may be longer than the length in the front-rear direction L of the excretory opening contact region S1.

A wing 3 described later may be provided in the excretory opening contact area S1. In addition, rear side area S3
May be provided with a hip flap 4 swelled outward in the width direction W.

The front edge of the wing 3 is defined by the root of the wing 3 and corresponds to a portion located on the front side of the two portions recessed most inside in the width direction W. The front edge of the wing 3 may define a boundary between the excretory opening contact area S1 and the front side area S2. The rear edge of the wing 3 is defined by the root of the wing 3, and corresponds to a portion located on the rear side of the two portions that are recessed most in the width direction W. The rear edge of the wing 3 may be located between the excretory opening contact area S1 and the rear side area S3. Here, a region between the front end edge of the wing 3 and the rear end edge of the wing 3 in the front-rear direction L is referred to as a “wing region”. In the absorbent article having a wing, the excretion opening contact area S1 is substantially the same area as the wing area. Therefore, it should be noted that in the present specification, the term “excretion opening contact area S1” can be read as “wing area”.

The absorbent article 1 includes a skin sheet 10, a non-skin sheet 20, and an absorber 30. The skin surface sheet 10 is provided on the skin surface side T <b> 1 from the absorbent body 30. Non-skin sheet 20 is absorbent 3
It is provided on the non-skin surface side T2 from 0. Absorber 30 includes skin sheet 10 and non-skin sheet 20.
Between.

The skin sheet 10 may have a top sheet 11, a side sheet 12, and a second sheet 13. The top sheet 11 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 11 covers the central portion of the absorber 30 in the width direction W. The topsheet 11 may extend in the front-rear direction L from the front side region S2 to the rear side region S3.

The top sheet 11 is made 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, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

The side sheet 12 covers the outer edge of the surface sheet 11 in the width direction W, and the surface sheet 1
It extends outward in the width direction W from 1. In addition, in this embodiment, although the absorbent article 1 has the side sheet 12, the absorbent article 1 does not need to have the side sheet 12. In this case, the top sheet 11 may cover the entire absorber 30.

The side sheet 12 can be made of the same material as the top sheet 11. However, in order to prevent the body fluid adhering to the top sheet 11 from getting over the side sheet 12 and leaking outside the absorbent article 1 in the width direction W, the side sheet 12 has hydrophobicity or water repellency. It is preferable to have. The side seat 12 may be disposed on the outer edge of the absorbent body 30 in the width direction W, the wing 3 and the hip flap 4.

The second sheet 13 has a surface sheet 11 at least in a non-bonding region 46 described later.
And the absorber 30. The second seat 13 has a front side area S2 in the front-rear direction L.
To the rear side region S3. Instead, the second sheet 13 may be provided only in the non-joining region 46 described later. In addition, the second sheet 13 is preferably narrower in the width direction W than the width of the absorbent core 31 described later.

The second sheet 13 is a liquid-permeable sheet that transmits liquid such as body fluid. Preferably, the hydrophilicity of the second sheet 13 is higher than the hydrophilicity of the top sheet 11. Specifically, the hydrophilicity of the second sheet 13 is such that the surface sheet 1 is at least in a non-bonding region 46 described later.
It may be higher than the hydrophilicity of 1. The second sheet 13 can be made of the same material as the top sheet 11.

The non-skin surface sheet 20 is a liquid-impermeable sheet. The non-skin sheet 20 may be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond, or a sheet in which a breathable resin film is bonded to a nonwoven fabric such as spunlace. it can.

The absorber 30 is disposed at least in the excretory opening contact area S1 and the rear side area S3. Moreover, the absorber 30 may extend from the excretory opening contact area S1 to the front side area S2. The absorber 30 includes an absorbent core 31 including an absorbent material that absorbs liquid, and a core wrap 32 that wraps the absorbent core 31. The core wrap 31 only needs to cover the absorbent core 31 at least on the skin surface side of the absorbent core 31. As a specific example, the core wrap 32 may include a sheet disposed on the skin surface side with respect to the absorbent core 31 and a sheet disposed on the non-skin surface side with respect to the absorbent core 31.
The skin-side sheet and the non-skin-side sheet constituting the core wrap 32 may be composed of the same sheet. The absorbent material constituting the absorbent core 31 can be formed from, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The core wrap 32 can be comprised, for example from a nonwoven fabric or a tissue sheet.

Instead of the above embodiment, the absorbent body 30 may not have the core wrap 31. In this case, the absorbent core 31 only needs to be covered with the skin sheet 10 and the non-skin sheet 20.

As described above, the absorbent article 1 has the wing 3 and the hip flap 4. The wing 3 and the hip flap 4 extend outward in the width direction W from the outer edge of the absorbent core 31 in the excretory opening contact region S1.

The wing 3 and the hip flap 4 may be configured by stacking the side sheet 12 and the non-skin surface sheet 20. The wing 3 is configured to be folded back to the non-skin surface sheet 20 side. The wing 3 is folded back to the non-skin surface side of the crotch portion of the underwear during use.

The hip flap 4 is located on the rear side of the wing 3 and is provided in the rear side region S3.
The hip flap 4 is not folded back during use, and is disposed between the underwear and the wearer's buttocks.
In the present embodiment, the hip flap 4 is not provided with an absorbent material. Alternatively, the hip flap 4 may be provided with an absorbent material.

(2) Detailed structure of absorber Next, with reference to FIGS. 1-4, the structure of the absorber 30 is demonstrated more concretely. FIG. 4 is a plan view of the absorber 30 in one embodiment. The absorber 30 has the middle-high part 33 at least in the excretion opening contact area S1. The middle / high part 33 may extend from the excretory opening contact area S1 to the front side area S2. The middle / high portion 33 is disposed across the center line CL in the excretion opening contact region S1. The middle-high portion 33 means a region where the thickness of the absorbent core 31 is thicker than the thickness of the absorbent core 31 in the region around the middle-high portion 33. The basis weight of the absorbent material of the middle-high portion 33 may be higher than the basis weight of the absorbent core 31 in a region other than the middle-high portion 33 in the excretory opening contact region S1. The middle-high portion 33 may be adjacent to a first low weight area 41 described later. Preferably, the absorption core 31 on the rear side of the first low weight area 41 is thinner than the thickness of the middle-high portion 33. More preferably, the absorption core 31 of the entire rear side region S3 is thinner than the thickness of the middle-high portion 33. The middle-high part 33 has the thickest highest part and the inclined part connected to the highest part. The inclined portion may be disposed between the highest portion and a front pressing portion described later, and between the highest portion and the first low weight area 41.

The absorber 30 may have a first low weight area 41, a second low weight area 42, and a third low weight area 43. Here, the “low weight area” means a region composed of the absorbent core 31 having a lower basis weight than the surrounding absorbent core 31 or a region not having the absorbent core 31. As described above, the “low weight area” is a concept including an area where the weight of the absorbent core 31 is zero.

The weight of the absorbent core 31 in the low weight areas 41 to 43 is preferably 150 g / m ² or less, and more preferably 100 g / m ² or less. Moreover, it is further preferable that the weight of the absorbent core 31 in the low weight areas 41 to 43 is substantially 0 g / m ² . Moreover, it is preferable that the fabric weight of the absorption core 31 in the low fabric weight area | regions 41-43 is 60% or less of the fabric weight of the absorption core (except medium-high portions) around the low fabric weight areas 41-43, and is 50% or less. It is more preferable.

Even when the “low weight area” is an area that does not have the absorbent core 31, the core wrap 32 may wrap the entire absorbent core 31 across the low weight area. In this case, even if the absorbent core 31 is divided into a plurality of regions, the absorbent body 30 is integrally formed by the core wrap 32.

The first low-weight area 41, the second low-weight area 42, and the third low-weight area 43 are boundaries where the rigidity of the absorbent body 30 changes. Therefore, the first low weight area 41, the second low weight area 42, and the third low weight area 43 correspond to areas where the absorber 30 is easily deformed.

The first low weight area 41 extends in the width direction W between the excretion opening contact area S1 and the rear side area S3. The first low weight area 41 may extend linearly along the width direction W or may extend along a curve along the width direction W.

The first low weight area 41 is located behind the center of the wing 3 in the front-rear direction L and the absorber 3.
0 may be provided in front of the rear edge. The first low weight area 41 may be provided across the rear end edge of the wing 3 in the front-rear direction L.

In the present embodiment, the first low weight area 41 has a curved shape in which the center in the width direction W of the first low weight area 41 protrudes rearward. More specifically, the center of the first low weight area 41 in the width direction W is located behind the outer edge of the first low weight area 41. The length in the front-rear direction L of the first low weight area 41 may be constant or may not be constant.

Preferably, the length of the first low weight area 41 in the width direction W is 25 mm or more. Thereby, it can suppress that the motion of the absorber 30 in the excretion opening | mouth contact | abutting area | region S1 is transmitted to back side area | region S3. More preferably, the first low weight area 41 extends from one end of the absorber 30 to the other end in the width direction W. In this case, the front edge of the first low weight area 41 is the excretory opening contact area S1.
The rear edge of the first low weight area 41 may define the front edge of the rear side area S3.

The length of the first low weight area 41 in the front-rear direction L is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 3 at the position of the center line CL of the absorbent article 1.
0 mm or less.

The second low weight area 42 extends in the front-rear direction L along the center line CL of the absorbent article in the rear side area S3. The second low weight area 42 may extend linearly in the front-rear direction L. Second
The low weight area 42 is preferably connected to the first low weight area 41.

The rear end edge of the second low weight area 42 may be located on the rear side of the center of the rear side area S3 in the front-rear direction. Further, the rear end edge of the second low weight area 42 may be located on the rear side of the position P1 of the maximum width of the hip flap 4. The length of the second low weight area 42 in the front-rear direction L is 12
It is preferably 0 mm or more, and more preferably 150 mm or more. Preferably, the length of the second low weight area 42 in the width direction W is not less than 1 mm and not more than 15 mm. In the cross section along the front-rear direction L of the wearer's body, a groove (crack) between the hips exists in a region from the back to the caudal bone from the back of the perineum. During use of the absorbent article, the second low weight area 42
Is placed in the area of the wearer's rupture.

The third low weight area 43 extends outward in the width direction W from the second low weight area 42 in the rear side area S3. The third low weight area 43 may be connected to the second low weight area 42. The front edge line of the third low weight area 43 may extend substantially parallel to the width direction W inside the width direction W. Further, the front edge line of the third low weight area 43 may protrude forward on the outer side in the width direction W. The rear edge line of the third low weight area 43 may be inclined forward as it goes from the inner side to the outer side in the width direction W.

The outer edge of the third low weight area 43 in the width direction W is located inside the outer edge of the absorbent core 31 in the rear region S3. A plurality of third low weight areas 43 may be provided at intervals in the front-rear direction L.

The absorbent article 1 includes crimping portions 51 and 52 in which a sheet of the core wrap 32 on the skin surface side of the absorbent core 31 and a sheet of the core wrap 32 on the non-skin surface side of the absorbent core 31 are crimped to each other.
, 53 (see FIG. 4).

The first crimping part 51 extends in the width direction W along the first low weight area 41. The width of the first crimping part 51 in the front-rear direction L is preferably smaller than the width of the first low weight area 41 in the front-rear direction L. Moreover, it is preferable that the 1st crimping | compression-bonding part 51 is continuously extended from the one end of the absorber 30 along the width direction W to the other end.

The second crimping part 52 extends in the front-rear direction L along the second low weight area 42. The width of the second pressure-bonding portion 52 in the width direction W is preferably smaller than the width of the second low weight area 42 in the width direction W. The second crimping part 52 may be connected to the first crimping part 51.

The third crimping portion 53 extends along the third low weight area 43. Third in the front-rear direction L
The width of the crimping part 53 is preferably smaller than the width of the third low weight area 43 in the front-rear direction L. The third crimping part 53 may be connected to the second crimping part 52.

It is preferable that the first pressure-bonding part 51, the second pressure-bonding part 52 and / or the third pressure-bonding part 53 are not formed on the skin sheet 10. More specifically, the first crimping part 51, the second crimping part 52, and / or the third crimping part 53 may be formed by crimping only the core wrap 32 or only the absorbent core 31 and the core wrap 32. preferable. When the absorbent core is present in the low weight areas 41, 42, 43, the crimping parts 51, 52, 53 may be parts where the absorbent cores of the low weight areas 41, 42, 43 and the core wrap 32 are crimped together. . Low weight areas 41, 42,
When the absorbent core does not exist in 43, the crimping portions 51, 52, and 53 may be portions where only the core wrap 32 is crimped. In this case, the absorbent core 31 has low weight areas 41, 42, 43.
And they are separated from each other with the crimping parts 51, 52, 53 as a boundary. The crimping parts 51, 52 and 53 can be formed by embossing. In addition, since the crimping | compression-bonding parts 51, 52, and 53 are covered with the skin sheet 10, they cannot be visually recognized from the outside or are difficult to visually recognize. Instead of the above embodiment, the first crimping part 51, the second crimping part 52 and / or the third crimping part 53 are
It may be formed on the skin sheet 10 and / or the non-skin sheet 20.

(3) Non-joining region between the top sheet and the absorber The skin sheet 10 is not joined to a member provided on the non-skin surface side of the skin sheet 10 in the first low weight area 41. It has the joining area | region 46 (refer FIG.1 and FIG.3). More specifically, the skin sheet 10 is not joined to the core wrap 32 in the non-joined region 46. The non-bonding region 46 is indicated by a region surrounded by a broken line in FIG.

The non-joining region 46 may extend at least from one end to the other end of the first low weight area 41 in the width direction W. Instead, the non-joining region 46 may not extend to both ends of the first low weight area 41 in the width direction W. The non-joining area 46 may extend from at least the first low weight area 41 to the third low weight area 43 closest to the first low weight area 41 among the plurality of third low weight areas 43. Accordingly, the skin sheet 10 can be lifted from the absorbent body 30 in the first low weight area 41 and the rear area.

(4) Pressing part Absorbent article 1 has a pressing part formed by compressing at least absorption core 31 in thickness direction T. This pressing part may have the front side pressing part 81, the longitudinal pressing part 82, and a pair of rear side pressing parts 84 (refer FIG.1 and FIG.4).

The front pressing part 81 is provided at least in the excretion opening contact area S1. The front side pressing part 81 may extend from the excretion opening contact area S1 to the front side area S2. The front pressing part 81 may be formed by compressing the topsheet 11, the absorbent core 31, and the core wrap 32 in the thickness direction T. The front side compression part 81 has a section along the front-rear direction L provided on both sides in the width direction W of the middle-high part 33. The front side compressed portion 81 may define a side edge in the width direction W of the middle-high portion 33.

The front pressing part 81 is bent toward the width direction W in the vicinity of the front end edge of the absorbent core 31, and U
It is continuously connected to the letter shape. Instead, the front side compressed portion 81 has a width direction W of the middle-high portion 33.
It may be provided separately on both sides. That is, the pair of front pressing parts 81 may be provided separately in a form separated from each other.

The longitudinal pressing portion 82 is provided on both sides of the center line CL, more specifically, the second low weight area 42 in the rear side region S3. The longitudinal pressing part 82 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction.

The longitudinal pressing part 82 extends along the front-rear direction L. The longitudinal pressing portion 82 may extend linearly in the front-rear direction L, or may extend in a curved manner inclined with respect to the front-rear direction L.
The longitudinal pressing part 82 may be formed in front of the position P1 of the maximum width of the hip flap 4.

A pair of rear side compression parts 84 are the rear side area S3, and are provided on both sides across the center line CL.
The rear side pressing part 84 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction. A pair of rear side compression parts 84 are spaced apart from each other with a center line CL passing through the center in the width direction W of the absorbent article. The pair of rear side compressed parts 84 may be located on the rear side of the position P1 of the maximum width of the hip flap 4.

The absorbent article 1 includes a first pressing unit 85 and a second pressing unit formed by pressing at least two of the sheets constituting the skin sheet 10 and the non-skin sheet 20 in the thickness direction T. 87 and the 3rd pressing part 86 may be included (refer FIG. 1). The first pressing part 85, the second pressing part 87 and the third pressing part 86 may be formed along the outer edge of the hip flap 4.

The absorbent article 1 may have a squeezed portion 88 formed by squeezing the skin sheet 10 at least in the first low weight area 41. It is preferable that the pressing part 88 is formed only in the skin sheet 10 (refer FIG. 1).

In the front-rear direction L, the compressed portion 88 may slightly reach the front side slightly beyond the first low weight area 41, but is preferably present on the rear side than the middle-high portion 33. The pressing part 88 may extend from at least the first low weight area 41 to the third low weight area 43 closest to the first low weight area 41 among the plurality of third low weight areas 43. The compressed portion 88 may be formed in a region that is substantially equivalent to the non-joining region 46 or a region that is narrower than the non-joining region 46.

The compressed portion 88 is preferably formed continuously in the front-rear direction L at least in the first low weight area 41. Here, if the pressing part 88 continues in the front-back direction L, it is not necessary to be formed linearly. For example, as shown in FIG. 1, the compressed portion 88 may have a zigzag shape in the front-rear direction L. It replaces with this, and the pressing part 88 may be continuously formed in the front-back direction L at least in the 1st low weight area | region 41 at least.

Preferably, the pressing part 88 is formed in a lattice shape as shown in FIG. Specifically, the compressed portion 88 has a plurality of first linear patterns inclined with respect to the front-rear direction and a plurality of second linear patterns inclined with respect to the front-rear direction and the first linear pattern. Good. It is preferable that the pressing part 88 is provided in an area narrower than the area of the second sheet 13.

(5) Adhesive region As shown in FIG. 2, the absorbent article 1 includes a first main body adhesive region 61, a second main body adhesive region 62, and a wing provided with an adhesive for fastening the absorbent article 1 to the underwear S. It has an adhesive region 63 and a hip flap adhesive region 64. These adhesive regions 61 to 64 are provided on the non-skin surface side of the non-skin surface sheet 20. The adhesive regions 61 to 64 may be covered with a release sheet in a state before use. The release sheet prevents deterioration of the adhesive in the adhesive regions 61 to 64 before use. The release sheet is removed by the wearer during use.

The first main body adhesive region 61 is disposed in front of the second main body adhesive region 62. The first main body adhesive region 61 and the second main body adhesive region 62 extend in the front-rear direction L. The first main body adhesive region 61 is disposed away from the second main body adhesive region 62 in the front-rear direction L. The first main body adhesive region 61 may be disposed on the front side of the first low weight area 41 and straddling the excretory opening contact region S1 and the front side region S2. The second main body adhesive region 62 is disposed in the rear region S3 on the rear side of the first low weight area 41. It is preferable that the 1st main body adhesion area | region 61 and the 2nd main body adhesion area | region 62 are not provided on the centerline CL. The wing adhesive region 63 is provided in the wing 3. The hip flap adhesive region 64 is provided in the hip flap 4.

The first low weight area 41 is preferably arranged in a region that does not overlap the adhesive regions 61 to 64 in the thickness direction T. More specifically, the first low weight area 41 is provided in a region between the first main body adhesive region 61 and the second main body adhesive region 62.

The second low weight area 42 is preferably arranged in an area that does not overlap the adhesive areas 61 to 64 in the thickness direction T. More specifically, the second low weight area 42 is provided between the plurality of second main body adhesive areas 62.

The pair of longitudinal pressing portions 82 is preferably provided in a region overlapping the second main body adhesive region 62.

(6) Absorbent article being worn Next, the shape of the absorbent article being worn will be described with reference to FIGS. FIG. 5 is a perspective view of the absorbent article in use. FIG. 6 is a schematic cross-sectional view of the absorbent article in use, taken along line 6A-6A in FIG. 7 is a schematic cross-sectional view of the absorbent article in use, taken along line 7A-7A in FIG. 8 is a schematic cross-sectional view of the absorbent article in use, taken along line 3A-3A in FIG. In FIGS. 6 and 7, a line indicating the shape of the wearer's body is indicated by a two-dot chain line.

When wearing the absorbent article 1 as a sanitary napkin, the absorbent article 1 is fixed to the undergarment S. The excretion opening contact area S1 of the absorbent article 1 is sandwiched between both legs of the wearer and receives a force from the outside in the width direction W toward the inside in the width direction W.

The cross-sectional shape of the wearer's body along the width direction W of the absorbent article 1 is different between the crotch vicinity and the buttocks vicinity. Specifically, the cross-sectional shape of the body in the vicinity of the wearer's crotch cleft (around the vaginal opening where menstrual blood appears) is such that the large labia protrudes from the base of the large labia and protrudes toward the absorbent article 1 side. Convex shape. In the inseam area of the wearer, the excretion opening contact area S1 of the absorbent article is arranged to face. In the crotch of the wearer, the absorption core 31 of the excretory opening contact area S1, in particular, the middle / high part 33 is arranged along the body, and leakage of body fluid in the crotch can be suppressed (see FIG. 6).

An anus and a fissure are located behind the perineum located behind the great labia of the wearer. The cross-sectional shape of the body near the rear of the perineum is a shape in which the center in the width direction is recessed. The rear side area S3 of the absorbent article is disposed to face the wearer's buttocks.

In the rear side area S3, a second low weight area 42 extending in the front-rear direction L along the center line CL is formed. Therefore, the center of the rear region S3 in the width direction W easily protrudes toward the wearer's body due to the force from the outside to the inside of the absorbent article (see FIG. 7). As a result, the rear area S
3, the absorbent article 1 can be deformed according to the shape of the wearer's crack. As a result, the wearer can obtain a comfortable fit with the absorbent article 1 even in the buttocks.

Here, the absorbent article 1 tends to change into a different shape according to the shape of the wearer's body in the excretory opening contact region S1 and the rear side region S3. The first low weight area 41 suppresses the influence of the deformation of the absorbent body 30 in the excretory opening contact area S1 on the deformation of the absorbent body 30 in the rear side area S3. That is, the first low weight area 41 makes it easy for the absorbent article to be independently deformed in the excretory opening contact area S1 and the rear area S3.

In addition, sanitary napkins for nighttime are often used in a sleeping posture on the back. In the posture where the wearer is lying on his back, a gap is easily formed between the buttocks and the absorbent article 1.

Specifically, since the wearer's buttocks are crushed by the floor in the sleeping position, the rear area S3 of the absorbent article 1 may slightly move toward the excretory opening contact area S1 by the force from the buttocks. is there. Thereby, in the vicinity of the region between the excretory opening contact region S1 and the rear region S3, the front-rear direction L
Distortion occurs. Due to this distortion, in the vicinity of the region between the excretory opening contact region S1 and the rear side region S3,
There may be a gap between the absorbent article 1 and the heel.

If there is a gap between the buttocks and the absorbent article, menstrual blood may travel through the body to the back side and leak from behind the absorbent article. In addition, the wearer may feel that menstrual blood is transmitted through the body and feel anxious.

In the absorbent article 1 which concerns on one Embodiment, the non-joining area | region 46 of the skin sheet 10 exists in the place of at least 1st low weight area S1. Therefore, when the rear region S3 of the absorbent article moves toward the excretory opening contact region S1, the non-bonded region 46 of the skin sheet 10 protrudes toward the wearer's body (reference sign “FIG. 8”. 47 "). The protrusion 27 of the skin sheet 10 fills a gap between the wearer's body. Thereby, even if it is a sleeping posture, menstrual blood can be prevented from being transmitted to the back side through the body.

(7) Folding of absorbent article The absorbent article 1 may be individually packaged in a folded state. Hereinafter, FIGS.
The folding of the absorbent article 1 will be described with reference to FIGS. 9 shows the fold line F of FIG.
1 is a plan view of an absorbent article 1 folded along L. FIG. 10 shows fold lines F1 to F in FIG.
3 is a schematic side view of an absorbent article folded along 3. FIG.

The absorbent article 1 has a front / rear fold line FL extending along the front / rear direction L, and a first fold line F1, a second fold line F2, and a third fold line F3 extending along the width direction W. Good. These folding lines FL, F1, F2, and F3 are lines for folding the absorbent article 1.

The front-rear fold line FL may be provided outside the outer end of the absorber 30 in the width direction W. Further, the front-rear fold line FL may be provided on the inner side in the width direction W than the first pressing portion 85, the second pressing portion 87, and the third pressing portion 86.

The first fold line F1 is provided on the rear side of the second fold line F2. The first fold line F1 is
The hip flap 4 may be provided in a region behind the maximum width P1. Further, the first folding line F <b> 1 may be provided between the longitudinal pressing portion 82 and the rear pressing portion 84 in the front-rear direction L. The first fold line F <b> 1 preferably passes through the third low weight area 43. In addition,
In the absorbent article 1 in which the length of the rear side region S3 in the front-rear direction L is relatively short, the first fold line F1 may not be provided.

In the front-rear direction L, the second fold line F2 is provided between the first fold line F1 and the third fold line F3. The second fold line F <b> 2 passes through an area on the rear side of the first low weight area 41 in the non-bonded area 46. The 2nd folding line F2 may be arrange | positioned rather than a pair of longitudinal pressing part 82. FIG. It is preferable that the second fold line F2 passes over the second main body adhesive region 62.

The third fold line F3 is provided in front of the second fold line F2. The third fold line F3 is
It may be provided in front of the highest part of the middle-high part 33. More specifically, the third fold line F3
Is avoiding the highest part of the middle-high part 33, and preferably passes through an inclined part connected to the highest part of the middle-high part 33. The third fold line F3 may be provided in the front side area S2.

The absorbent article 1 is folded inward from the front-rear fold line FL so that the non-skin side is exposed to the outside (see FIG. 9). From the state shown in FIG. 9, the absorbent article 1 has the first fold line F1, the second
The folding is preferably performed in the order of the fold line F2 and the third fold line F3 (see FIG. 10).

In the state in which the absorbent article 1 is folded, the rear edge 92 of the absorbent article is located inside the absorbent article. In the state in which the absorbent article 1 is folded, the front edge 91 of the absorbent article is located outside the absorbent article. The first fold F1 is located inside the folded absorbent article 1. The second fold line F2 and the third fold line F3 are located outside the folded absorbent article 1.

(8) Action and Effect According to one embodiment, the absorber 30 includes a first low weight area 41 extending in the width direction W between the excretory opening contact area S1 and the rear side area S3, and the rear side area S3. And a second low weight area 42 extending in the front-rear direction L along the center line CL. The second low weight area 42 is a first low weight area 41.
It is connected with. According to another embodiment, the absorber 30 is a wing 3 in the front-rear direction L.
A first low weight area 41 extending in the width direction W on the rear side of the center of the rear side area S3 and in the front side of the center of the rear side area S3 in the front-rear direction L; A second low weight area 42 that extends to the rear side from the center of the rear side area S3, and the second low weight area 42 is connected to the first low weight area 41.

According to these embodiments, in the posture in which the wearer is sleeping, the rear side region S3 of the absorbent article is arranged directly below the wearer's buttocks, that is, between the buttocks and the floor. The second formed in the rear side area S3
Since the low weight area 42 has a relatively low rigidity, the uncomfortable feeling given to the wearer is small. The first
Due to the low weight area 41 and the second low weight area 42, the absorbent material constituting the absorbent core 31 includes the excretory opening contact area S1 (or wing area), the right side portion of the rear side area S3, and the rear side area S3. It becomes difficult to move between the left part. Thereby, it can suppress that the absorption material which comprises the absorption core 31 concentrates locally by the operation | movement during wearing. As a result, the wearer's discomfort can be alleviated while the absorbent article 1 is worn. Therefore, the wearer is unlikely to feel uncomfortable even in the sleeping position.

Moreover, as above-mentioned, the 2nd low weight area | region 42 protrudes toward a wearer's skin side during wear. Since the second low weight area 42 extends along the front-rear direction L in the rear side area S3, it is easy to fit along the wearer's crack. Further, as described above, the first low weight area 41 makes it easy for the absorbent article to be independently deformed in the excretory opening contact area S1 and the rear side area S3. That is, the absorbent article 1 fits in accordance with the shape of the body in both the excretory opening contact area S1 and the rear side area S3 by deforming independently in the excretion opening contact area S1 and the rear side area S3. obtain.

As described above, the absorbent article becomes familiar with the wearer's body and can give a comfortable fit to the wearer.

According to one embodiment, the first low weight area 41 continuously extends from one end of the absorber 30 to the other end along the width direction W. Thereby, the absorption material which comprises the absorption core 31 becomes difficult to move more between the excretion opening | mouth contact | abutting area | region S1 and back side area | region S3. Therefore, it can suppress more that the absorption material which comprises the absorption core 31 concentrates locally by the operation | movement during wearing. Further, since the first low weight area 41 continuously extends from one end to the other end of the absorber 30, the absorption core of the excretory opening contact area S1 and the absorption core of the rear side area S3 are deformed independently of each other. It becomes easy to do. Therefore, the absorption core of the excretory opening contact area S1 is more easily deformed according to the shape of the wearer's inseam, and the absorption core of the rear side area S3 is more deformed according to the shape of the wearer's buttocks (crack). It becomes easy. As a result, the absorbent article is more familiar with the wearer's body and can give a more comfortable fit to the wearer.

According to one embodiment, the first low weight area 41 is curved in a convex shape toward the rear in plan view. When the wearer is in a supine posture, the portion of the first low weight area 41 that is convexly convex bulges convexly toward the rear together with the underwear and is pushed out in a direction away from the body. Thereby, the deformation | transformation of the absorbent article at the time of a supine posture can be absorbed. Therefore,
The absorber 30 in the front side area S1 and the excretory opening contact area S1 is maintained in a shape that follows the roundness of the body,
As a result, the entire absorbent article is placed along the roundness of the body. Thereby, an absorptive article can adapt to a wearer's body more, and can give a more comfortable fit to a wearer.

According to one embodiment, the absorbent body 30 has a pressure-bonding part in which a sheet closer to the skin surface than the absorbent core 31 and a sheet closer to the non-skin surface than the absorbent core 31 are bonded to each other. The sheet on the skin surface side from the absorbent core 31 is, for example, the core wrap 31 and / or the skin sheet 10. Absorption core 3
The sheet on the non-skin surface side than 1 is, for example, the core wrap 31 and / or the non-skin sheet 20. The pressure-bonding portion includes a first pressure-bonding portion 51 that extends along the first low-weighted area 41 and a second pressure-bonding portion 52 that extends along the second low-weighted area 42. The absorption core 31 is partitioned by the first crimping part 51 and the second crimping part 52 into an excretory opening contact area S1, a right side part of the rear side area S3, and a left side part of the rear side area S3. Thereby, the absorption material which comprises the absorption core 31 can suppress moving between the excretion opening | mouth contact | abutting area | region S1, the right side part of the rear side area S3, and the left side part of the rear side area S3. Thereby, it can prevent that the absorbent material which comprises the absorption core 31 concentrates locally by the operation | movement during wearing. As a result, the wearer's discomfort can be alleviated while wearing the absorbent article. In particular, even when the wearer is sleeping, the wearer's discomfort can be alleviated, and a more comfortable fit can be given to the wearer.

According to one embodiment, it has a core wrap 32 that covers the absorbent core 31 on the skin surface side at least with respect to the absorbent core 31, and a skin surface sheet 10 that is provided on the skin surface side with respect to the core wrap 32.
At least one of the first pressure-bonding part 51 and the second pressure-bonding part 52 is not formed on the skin sheet 10. Thereby, the 1st crimping | compression-bonding part 51 and the 2nd crimping | compression-bonding part 52 are covered with the skin sheet 10 located in the skin surface side rather than the absorber 30. FIG. This improves the feel of the absorbent article,
A more comfortable fit can be given to the wearer.

According to one embodiment, the first crimping part 51 extends from one end of the absorber 30 to the other end along the width direction W. Thereby, the absorption material which comprises the absorption core 31 is the 1st low weight area 4
It becomes more difficult to pass through 1. That is, the absorbent material is less likely to move between the excretory opening contact area S1 and the rear side area S3. Therefore, it can suppress more that the absorption material which comprises the absorption core 31 concentrates locally by the operation | movement during wearing.

According to one embodiment, a pair of longitudinal pressing parts 82 extending along the front-rear direction L are formed on both sides of the second low weight area 42. Since the pair of longitudinal compression portions 82 have relatively high rigidity, they serve as a base point for deformation of the absorbent core 31. The second low weight area 42 sandwiched between the pair of longitudinal pressing portions 82 is more likely to be raised on the wearer's body side. Thereby, the absorbent article which can be more familiar with a wearer's body and can give a more comfortable fit to a wearer can be provided.

According to one embodiment, the first low-weight area 41 and the second low-weight area 42 are the adhesive areas 61,
It is arranged in a region that does not overlap with 62, 63, 64. Thereby, the first low weight area 41
In addition, the second low weight area 42 can function as a deformation base point. That is, the absorbent cores 31 adjacent to each other with the first low weight area 41 and the second low weight area 42 interposed therebetween can easily move independently of each other. Thereby, it becomes easy to fit the absorber 30 according to a wearer's inseam and the shape of a buttocks. Therefore, it is possible to provide an absorbent article that is more familiar with the wearer's body and can provide a more comfortable fit to the wearer.

According to one embodiment, a pair of longitudinal squeezing portions 82 extending along the front-rear direction L are formed on both sides of the second low weight area 42, and the pair of longitudinal squeezing portions 82 and the adhesive region 62 It is provided in the overlapping area. A region where the pair of longitudinal pressing portions 82 is provided is fastened to the underwear.
Thereby, when the absorption core 31 deform | transforms into a base point from a pair of longitudinal pressing part 82, a pair of longitudinal pressing part 82 can be supported by underwear. Since the pair of longitudinal squeezed portions 82 serving as the base points of deformation are supported, it is easy to maintain the state in which the region between the pair of longitudinal squeezed portions 82 protrudes.

According to one embodiment, the absorber 30 has a third low weight area 43 that extends outward from the second low weight area 42 in the width direction W in the rear side area S3. The third low weight area 43 forms a deformation base point extending along the width direction W. Since the absorbent core 31 in the rear side region S3 can be deformed with the third low weight area 43 as a base point, the absorbent article 1 can easily fit along the roundness along the front-rear direction L of the body. In particular, as shown in FIG. 7, when the second low weight area 42 protrudes along the fissure, it may be difficult to deform the rear side region S3 along the roundness along the front-rear direction L of the body. . Even in this case, it is possible to easily deform the rear side region S3 in accordance with the roundness along the front-rear direction L of the body by the third low weight area 43 serving as a deformation base point. Thereby, the absorbent article which can be more familiar with a wearer's body and can give a more comfortable fit to a wearer can be provided.

According to one embodiment, the absorber 30 is a middle-high portion 33 arranged across the center line CL in a region in front of the first low weight area 41, that is, in the excretory opening contact region S1 or the wing region. Thus, the middle / high portion 33 is thicker than the thickness of the absorber 30 around the middle / high portion. Excretion opening contact area S1 is located in a wearer's inseam. The relatively thick middle-high part 33 is easy to fit the shape of the wearer's crotch. Further, since the mid-high portion 33 has relatively high rigidity, the center line C of the mid-high portion 33
Only the region near L is difficult to deform locally. On the other hand, due to the second low weight area 42, the absorber 30 in the rear side area S3 is easily deformed so that the area in the vicinity of the center line CL protrudes toward the crack. Thus, the absorber 30 tends to be deformed into different shapes in the excretory opening contact area S1 and the rear side area S3. Even in this case, the absorber 30 is easily deformed independently from each other in the excretory opening contact region S1 and the rear region S3 by the first low weight area 41. Thereby, an absorbent article can be made to fit more according to a wearer's body shape from a wearer's inseam to a crack. Therefore, it is possible to provide an absorbent article that is more familiar with the wearer's body and can provide a more comfortable fit to the wearer.

According to one embodiment, the absorbent article has a hip flap 4 that swells outward in the width direction W in the rear side region S3. Since the hip flap 4 swells widely in the rear side region S3, a force from the outer side to the inner side in the width direction W is likely to be applied from the wearer's buttocks to the rear side region S3.
Thereby, the 2nd low weight area 42 of back side field S3 becomes easier to protrude toward a wearer's explosion. As a result, the absorbent article 1 can be more easily fitted to the wearer in the rear side region S3 according to the shape of the buttocks.

As described above, the present invention has been described in detail using the above-described embodiment.
Obviously, the invention is not limited to the embodiments described herein. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of this specification is
It is for the purpose of illustration and is not intended to limit the present invention in any way.

1: Absorbent article 10: Skin sheet 20: Non-skin sheet 30: Absorbent body 31: Absorbing core 32: Core wrap 33: Middle and high part 41: First low weight area 42: Second low weight area 43: Third low Weight area 51: 1st crimping part 52: 2nd crimping part 53: 3rd crimping part 61: 1st main body adhesion area 62: 2nd main body adhesion area 81: Front side compression part 82: Long side compression part 84: Rear side compression part L: front-rear direction W: width direction T: thickness direction S1: excretory opening contact area S2: front side area S3: rear side area CL: center line

Claims (13)

The front-rear direction and the width direction orthogonal to each other;
An excretory opening contact area facing the excretion opening of the wearer;
A rear region located on the rear side of the excretory opening contact region;
Having at least the excretory opening contact area and the absorber disposed in the rear side area,
The absorbent body includes a first low weight area extending in the width direction between the excretory opening contact area and the rear side area, and a center line connecting a center of the width direction in the rear side area. A second low weight area extending in the front-rear direction,
The absorber of the excretory opening contact area has a basis weight higher than the basis weights of the first low weight area and the second low weight area,
The length of the first low basis weight regions in the longitudinal direction state, and are more and 50mm or less 10mm at the location of the center line,
The length of the front-back direction of the second low weight area is 120 mm or more . The front-rear direction and the width direction orthogonal to each other;
An excretory opening contact area facing the excretion opening of the wearer;
A rear region located on the rear side of the excretory opening contact region;
Having at least the excretory opening contact area and the absorber disposed in the rear side area,
The absorbent body includes a first low weight area extending in the width direction between the excretory opening contact area and the rear side area, and a center line connecting a center of the width direction in the rear side area. A second low weight area extending in the front-rear direction,
The absorber of the excretory opening contact area has a basis weight higher than the basis weights of the first low weight area and the second low weight area,
The length of the first low weight area in the front-rear direction is 10 mm or more and 50 mm or less at the position of the center line ,
A non-skin surface sheet provided on the non-skin surface side of the absorber,
An adhesive region provided on the non-skin surface side of the non-skin sheet,
The first low-weight area and the second low-weight area are absorbent articles that are arranged in areas that do not overlap the adhesive area. A pair of longitudinal pressing parts extending along the front-rear direction are formed on both sides of the second low weight area,
The absorbent article according to claim 2 , wherein the pair of longitudinal pressing portions are provided in a region overlapping with the adhesive region. The front-rear direction and the width direction orthogonal to each other;
An excretory opening contact area facing the excretion opening of the wearer;
A rear region located on the rear side of the excretory opening contact region;
Having at least the excretory opening contact area and the absorber disposed in the rear side area,
The absorbent body includes a first low weight area extending in the width direction between the excretory opening contact area and the rear side area, and a center line connecting a center of the width direction in the rear side area. A second low weight area extending in the front-rear direction,
The absorber of the excretory opening contact area has a basis weight higher than the basis weights of the first low weight area and the second low weight area,
The length of the first low weight area in the front-rear direction is 10 mm or more and 50 mm or less at the position of the center line ,
The said absorbent article is an absorbent article which has the hip flap which swelled to the outer side of the said width direction in the said back side area. The front-rear direction and the width direction orthogonal to each other;
An absorber,
A wing that extends outward in the width direction from the outer edge of the absorbent body in the width direction and can be folded back during use;
A wing area that is an area between a front edge of the wing and a rear edge of the wing in the front-rear direction;
A rear side region located on the rear side of the wing region,
The absorber has a first low weight area extending in the width direction on the rear side of the center of the wing in the front-rear direction and on the front side of the center of the rear side area in the front-rear direction, and the rear side area. And a second low weight area extending to the rear side from the center of the rear side area in the front-rear direction along a center line connecting the centers in the width direction.
The absorber of the wing area has a basis weight higher than the basis weights of the first low weight area and the second low weight area,
The length of the said 1st low weight area in the said front-back direction is an absorbent article which is 10 mm or more and 50 mm or less in the position of the said centerline. The absorber has a third low weight area extending from the second low weight area to the outside in the width direction in the rear side area,
A pair of longitudinal pressing parts extending along the front-rear direction are formed on both sides of the second low weight area,
The absorbent article according to any one of claims 1 to 5 , wherein the pair of longitudinal pressing portions are disposed so as to overlap the third low weight area. The absorber has a third low weight area extending from the second low weight area to the outside in the width direction in the rear side area,
A plurality of the third low weight areas are provided at intervals in the front-rear direction;
The absorbent article according to any one of claims 1 to 6 , wherein a line edge on the rear side of the third low weight area is inclined forward as it goes from the inner side to the outer side in the width direction. The absorbent article according to any one of claims 1 to 7 , wherein the first low weight area extends continuously from one end to the other end of the absorbent body along the width direction. The absorbent article according to any one of claims 1 to 8 , wherein the first low weight area is curved in a convex shape toward the rear in a plan view. The absorber has an absorbent core containing an absorbent material that absorbs liquid;
The absorbent article has a pressure-bonding portion between a sheet on the skin surface side of the absorbent core and a sheet on the non-skin surface side of the absorbent core,
The crimping portion may include a first crimp portion extending along the first low basis weight region, and a second crimp portion extending along said second low basis weight regions, of claims 1 to 9 The absorbent article of any one of Claims. A core wrap that covers the absorbent core at least on the skin side of the absorbent core; and
A skin sheet provided on the skin surface side of the core wrap, and
The absorptive article according to claim 10 in which at least one of said 1st press part and said 2nd press part is not formed in said skin sheet. The absorbent article according to claim 10 or 11 , wherein the first crimping portion extends from one end of the absorbent body to the other end along the width direction. The absorber has a mid-high portion disposed across the center line in a region in front of the first low weight area,
The absorbent article according to any one of claims 1 to 12, wherein the middle-high part is thicker than a thickness of the absorber around the middle-high part.

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