TW201634019A - Absorptive article - Google Patents

Abstract

Provided is an absorptive article which fits the absorbent core to the buttocks of the wearer and which can suppress leaking. This absorptive article (1) comprises an excretion orifice contact region (S1) which faces towards the excretion orifice of the wearer, a rear region (S2) positioned to the rear of the excretion orifice contact region (S1), and an absorbent core (31) which is arranged in the excretion orifice contact region (S1) and the rear region (S2). The absorbent core (31) of the rear region (S2) is provided with a lengthwise slit (42) which is arranged in the center of the absorbent core (31) in the width direction (W) and which extends in the length direction (L) of the absorptive article (1), and with auxiliary slits (43) which are continuous with the lengthwise slit (42) and extend outwards in the width direction (W) from the lengthwise slit (42). In the width direction (W), the outside edges (43E) of the auxiliary slits (43) are positioned inwards of the outside edges (31E) of the absorbent core (31) in the rear region (S2).

Description

Absorbent article

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

Patent Document 1 discloses an absorbent article having a middle-high portion that is raised toward the skin contact surface side and two outer sides that are provided in the wide-side direction of the middle-high portion, and that press the surface sheet and the leakage preventing groove of the absorbent body. In the state in which the excretion opening of the absorbent article is in contact with each other, the force is applied to the inner side in the widthwise direction by the leg of the wearer. When the force of the inner side in the width direction is applied to the absorbent article of the patent document 1, the leakage preventing groove is bent toward the armpit skin side of the wearer, and the middle and high portions of the absorbent body are raised accordingly (refer to Patent Document 1). Paragraph 0016).

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-239722

However, the above absorbent article has the following problems.

The cross-sectional shape of the body along the broad side of the wearer's buttocks is the shape of the left and right buttocks, and the hips are recessed. Since the middle-high portion of Patent Document 1 extends rearward from the drain opening contact region, if the absorber of the drain opening contact region is raised, the absorber in the rear side region is also raised. Since the middle portion of the rear side region of Patent Document 1 has a high basis weight, the thickness of the ridge is increased when it is swelled toward the wearer side, and it is not easily disposed along the depression of the buttocks of the body. As a result, a gap occurs between the wearer's buttocks and the absorbent article, and a leak may occur.

Further, the cross-sectional shape of the body along the front-rear direction of the wearer is a shape with a curve from the discharge port abutment region to the rear. If the absorbent core of the posterior field is not arranged along the curve of the body, there is a case where a back leak occurs.

The present invention has been made in view of the above-described problems, and an object of the invention is to provide an absorbent article which can prevent the leakage of the absorbent core to the buttocks of the wearer.

In order to solve the problem, the absorbent article (absorbent article 1) of the present invention is provided with a discharge port abutment region (excretion port abutment region S1) opposed to the drain port of the installer; The mouth contact region is further located on the rear side rear side field (rear side field S2); and the absorbent article disposed in the excretion port abutment field and the rear side field absorbent core (absorbent core 31), the gist thereof is An absorbent core in the aforementioned rear side region is provided at a center disposed in a width direction of the absorbent core toward the absorbent article Front and rear slits (front and rear slits 42) extending in the front-rear direction; and auxiliary slits (auxiliary slits 43) connected to the front and rear slits and extending outward from the front and rear slits toward the broad side direction, the auxiliary fine The outer edge (outer edge 43E) of the slit is located on the inner side in the widthwise direction of the outer edge (outer edge 31E) of the absorbent core in the rear side region.

Moreover, the absorbent article (absorbent article 1) of the present invention is provided with a discharge port abutment region (excretion port abutment region S1) opposed to the drain port of the installer, and a contact area with the drain port a rear side field (rear side field S2) located further on the rear side; and an absorbent article disposed in the absorbent core (absorbent core 31) of the excretion opening abutting domain and the rear side domain, the gist thereof being: The absorbent core of the side region is provided with a first curved portion (front and rear slit 42) which is configured such that the center of the absorbent core in the rear side region can be convexly curved toward the wearer side; a curved portion (an auxiliary slit 43) which is a deformation base point that bends the absorbent core of the rear side region in a thickness direction, and extends in a widthwise direction, and an outer edge (outer edge 43E) of the second curved portion. It is located on the inner side in the widthwise direction of the outer edge (outer edge 31E) of the absorbent core.

1‧‧‧Absorbables

3‧‧‧ wing

4‧‧‧ hip wing

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧ side flakes

20‧‧‧Non-skin sheet

30‧‧‧Acceptor

31‧‧‧Absorbent core

31E‧‧‧ outer edge of the absorbent core

311‧‧‧1st area

312‧‧‧2nd area

313‧‧‧3rd area

32‧‧‧ core cladding

41‧‧‧ Wide slits

42‧‧‧ before and after the slit (1st part)

43‧‧‧Auxiliary Slit (2nd part)

60‧‧‧Adhesive area

61‧‧‧1st body adhesion area

62‧‧‧2nd body adhesion area

63‧‧‧Flap adhesive area

64‧‧‧The hip-wing area

80‧‧‧Squeeze Department

81‧‧‧Excretion port press section

82‧‧‧Back side press section

83‧‧‧The hip press section

L‧‧‧ direction

T‧‧‧ thickness direction

T1‧‧‧ skin opposite side

T2‧‧‧ non-skin opposite side

W‧‧‧Broadside direction

S1‧‧‧Draining port abutment domain

S2‧‧‧ Back side domain

S3‧‧‧ front side domain

Fig. 1 is a plan view of an absorbent article according to an embodiment.

Fig. 2 is a bottom view of the absorbent article shown in Fig. 1 .

Fig. 3 is a schematic cross-sectional view showing a cross section taken along the line A-A shown in Fig. 1 .

[Fig. 4] Fig. 4(a) and Fig. 4(b) are the absorbents shown in Fig. 1. A cross-sectional view of the state in which the article 1 is mounted by the installer.

Fig. 5 is a cross-sectional view showing a state in which the absorbent article 1 shown in Fig. 1 is attached to an installer.

(1) The overall structure of the absorbent article

The overall structure of the absorbent article 1 of the embodiment will be described with reference to Figs. 1 to 3 . In addition, in the description of the following drawings, the same or similar symbols are denoted by the same or similar parts. However, if the drawing is a pattern, it is necessary to pay attention to the case where the ratio of each size is different from the actual one. Therefore, the specific dimensions and the like must be judged by referring to the following description. Further, even in the drawing planes, portions having different dimensional relationships and ratios can be included.

1 is a plan view of an absorbent article, and FIG. 2 is a rear view of the absorbent article. Fig. 3 is a cross-sectional view taken along line A-A of Fig. 1; The absorbent article 1 of the present embodiment is a sanitary napkin for night use.

The absorbent article 1 has a front-rear direction L extending toward the front side (ventral side) and the rear side (back side) of the wearer; a widthwise direction W orthogonal to the front-rear direction L; and the skin facing the wearer The thickness direction T in which the opposing surface side T1 and the non-skin opposing surface side T2 extend.

The absorbent article has a drain port abutment region S1 disposed in the drain port abutment region of the installer; a rear side region S2 positioned on the rear side of the drain port abutment region S1; and a drain port Abutting the front side of the domain S1 Front side domain S3. The length of the front-back direction L of the rear side region S2 is longer than the length of the front-rear direction L of the drain-port contact domain S1. The excretory opening abutment field S1 is an area that is attached to the crotch of the undergarment in a state where the panty is attached. In the excretory opening abutment field S1, a fin to be described later is disposed. The boundary between the excretory opening abutment field S1 and the rear side domain S2 is a wide-side slit 41 which will be described later. The front end edge of the wide side slit 41 is the rear end edge of the drain opening abutting domain S1, and the rear end edge of the wide side slit 41 is the front end edge of the rear side region S2. Further, the rear end edge of the rear side region S2 is the rear end edge of the absorbent article 1. The boundary between the drain opening abutting domain S1 and the front side domain S3 is the front edge of the flap 3. The front end edge of the flap 3 is the root of the flap 3, and is a portion located on the front side in a portion recessed inward in the most wide direction of the flap 3. The root of the front side of the flap 3 is the front end edge of the drain opening abutting domain S1 and is the rear end edge of the front side domain S3. Further, the front end edge of the front side region S3 is the front end edge of the absorbent article 1. FIG. 3 shows a range in the front-rear direction of the excretory opening abutment domain S1, the rear side domain S2, and the front side domain S3.

The absorbent article 1 is provided with the absorbent body 30, the skin surface sheet 10 which is located further on the skin facing surface side T1 than the absorbent body 30, and the non-skin which is more than the absorbent body 30 on the non-skin opposing surface side T2. Face sheet 20. The skin surface sheet 10 has a liquid-permeable surface sheet 11 covering at least the center in the width direction of the absorber 30, and an outer edge (outer end portion in the width direction) covering the surface sheet 11 and extending outward in the width direction. The protruding side sheet 12 is extended. The non-skin sheet 20 is a liquid impermeable sheet.

The surface sheet 11 is a liquid permeating through a liquid such as a body fluid. Sexual thin slices. The surface sheet 11 is a surface covering at least the absorber 30. The surface sheet 11 is not particularly limited as long as it is a sheet-like material having a liquid-permeable structure such as a non-woven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. Any of natural fiber and chemical fiber can be used as the material of the woven fabric or the non-woven fabric.

The side sheets 12 can be selected from the same material as the surface sheets 11. However, in order to prevent menstrual blood from flowing past the side sheet 12 to the outside of the absorbent article 1, it is preferable that the side sheet 12 has hydrophobicity or water repellency. The side sheets 12 are disposed on the outer edge of the absorber 30, the flaps 3, and the hip blades 4.

The non-skin surface sheet 20 has a length substantially the same as the length of the skin surface sheet 10. The non-skin sheet 20 can be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene or the like, an air-permeable resin film, and a sheet of a breathable resin film bonded to a nonwoven fabric such as a spun bond or a water needle. .

The absorber 30 has an absorbent core 31 in which an absorbent material is laminated, and a core clad 32 that covers the absorbent core 31. The absorbent material is exemplified by hydrophilic fibers, pulp, and SAP. Further, in the absorber 30 of the embodiment, the rear end edge of the absorbent core 31 substantially coincides with the rear end edge of the core clad layer 32.

The absorbent core 31 is disposed in the drain port abutment domain S1 and the rear side domain S2. Further, the absorbent core 31 may be disposed in a state in which the excretory opening abuts the domains of the rear domain S1 and the rear side domain S2, or may be disposed across the drain abutment domain S1 and the rear side domain S2. Moreover, the absorbent core 31 is only required to be at least It may be disposed in the excretory opening abutting domain S1 and the rear side domain S2, or may be disposed in the excretory opening abutting domain S1, the rear side domain S2, and the front side domain S3.

The absorbent core 31 is a middle-high portion 33 having an inner side in the widthwise direction of the outer edge 31E of the absorbent core 31. The middle portion 33 is located in the drain opening abutment region S1, and is located on the inner side in the widthwise direction of the outer edge 31E of the absorbent core 31 than the drain port abutting region S1. The thickness of the middle portion 33 is thicker than the thickness of the outer edge 31E of the absorbent core 31 in the drain port abutment region S1. The basis weight of the absorbent material of the middle-high portion 33 is higher than the basis weight of the absorbent material of the outer edge 31E of the absorbent core 31 in the discharge port abutment region S1. The middle portion 33 is located on the rear side in the drain opening abutment region S1 and is adjacent to the wide side slit 41. In the outer edge of the middle portion 33 of the embodiment of the present embodiment, a press portion 80 that compresses the absorber 30 and the skin sheet 10 in the thickness direction is provided.

The absorbent core 31 has a wide-side slit 41, a front and rear slit 42 and an auxiliary slit 43. The absorbent core 31 is formed by wide slits 41, front and rear slits 42, and auxiliary slits 43 for bending the absorbent core 31 in the thickness direction T.

The basis weight of the absorbing material of the wide-side slit 41, the front and rear slits 42, and the auxiliary slit 43 is lower than the basis weight of the absorbing material of the surrounding absorbent core 31. The surrounding absorbent core 31 refers to an absorbent core that abuts a region of a wide-side slit or the like, for example, an absorbent core adjacent to the wide-side slit 41 in the drain opening abutment region S1; and a wide-side slit in the rear side region S2 41 absorbent core. Further, the wide-side slits 41, the front and rear slits 42, and the auxiliary slits 43 are only required to have a lower basis weight of the absorbent material than the surrounding absorbent core 31. The region having a basis weight of 0 may be designed to have a basis weight of 0, but may be provided with a region where the absorbent core 31 is mixed with the absorbing material.

The wide-side slit 41, the front and rear slits 42, and the auxiliary slit 43 of the embodiment of the present embodiment have a design basis weight of zero. Therefore, in the thickness direction T, the region overlapping the wide slit 41, the region overlapping the front and rear slits 42, and the region overlapping the auxiliary slit 43 are not between the skin sheet 10 and the non-skin sheet 20. Configure the absorbent material. Further, in the thickness direction T, the region overlapping the wide slit 41, the region overlapping the front and rear slits 42, and the region overlapping the auxiliary slit 43 are not joined to the skin sheet 10 and the non-skin sheet 20.

Further, in a region overlapping the wide slit 41, a region overlapping the front and rear slits 42, and a region overlapping the auxiliary slit 43, the core cladding 32 on the skin facing surface side of the absorbent core 31 is in position. The core cladding 32 on the non-skin side of the absorbent core 31 may or may not be joined. For example, the structure in which the core clad 32 on the skin facing surface side of the absorbent core 31 and the core clad 32 on the non-skin opposing surface side of the absorbent core 31 are joined can suppress the movement of the absorbent core 31. Further, the surface sheet 11 and the core clad layer 32 may or may not be joined in a region overlapping the wide slit 41, a region overlapping the front and rear slits 42, and a region overlapping the auxiliary slit 43. . In addition, the non-skin sheet 20 and the core clad 32 may be joined in a region overlapping the wide slit 41, a region overlapping the front and rear slits 42, and a region overlapping the auxiliary slit 43. It may also not be joined.

Wide-edge slits 41, front and rear slits 42, and auxiliary slits 43, is the boundary that becomes rigid. Specifically, for example, the rigidity of the region on the front side of the wide-side slit 41 is different from the rigidity of the region on the rear side of the slit slit 41. More specifically, the basis weight of the absorbing material in the region on the front side of the wide-side slit 41 is higher than the basis weight of the absorbing material of the wide-side slit 41. Further, the basis weight of the absorbing material in the region on the rear side of the wide-side slit 41 is higher than the basis weight of the absorbing material in the wide-side slit 41.

The wide-side slit 41 extends between the drain opening abutting domain S1 and the rear side domain S2 in the widthwise direction W. The wide-side slit 41 may extend at least in the width direction, may be linearly parallel to the broad side direction, or may be parallel to the broad side direction, or may be linear or curved with respect to the broad side direction. The wide-side slit of the embodiment of the present embodiment is a curved shape in which the center of the wide-side slit 41 in the broad side direction protrudes rearward. More specifically, the center of the wide side slit 41 in the width direction is positioned further rearward than the outer edge of the wide side slit 41. The center of the wide side slit 41 in the width direction is a convex shape toward the rear. Further, the length of the wide-side slit in the front-rear direction may be constant or may vary. Moreover, the length of the wide-side slit in the front-rear direction is 10 mm or more and 50 mm or less, and it is more preferable that the length of the wide-side slit is 10 mm or more and 30 mm or less.

For example, when the length of the wide-side slit 41 in the front-rear direction is less than 10 mm, the operation of the front side of the buffer wide slit 41 and the rear side of the wide slit 41 may not be sufficiently obtained, or the breakage may not be sufficiently obtained. The role of the situation. In addition, when the length of the wide-side slit 41 in the front-rear direction exceeds 50 mm, the operation of the front side of the wide-side slit 41 and the rear side of the wide-side slit 41 are buffered, or the effect of the breaking is increased. There will be A situation in which the sense of relief of the absorbent article is reduced.

Moreover, it is preferable that the length of the wide-side slit 41 in the width direction is 25 mm or more. In general, the length of the middle-high portion 33 of the sanitary napkin for night use (the length in the widthwise direction of the portion having a relatively high basis weight) is often 25 mm or more and 30 mm or less. For example, when the middle-and-high portion 33 is continuously formed in the drain port abutment region S1 and the rear side region S2, the operation of the drain port abutment region S1 by the middle-high portion is interlocked in the rear side region S2. However, by setting the length of the wide-side slit 41 in the width direction to 25 mm or more, the middle-high portion 33 is divided in the front-rear direction, and the operation of the drain opening abutment field S1 and the rear side region S2 can be suppressed.

The wide-side slit 41 may be formed in the entire widthwise direction of the absorbent core 31, or may be formed in a region of a part of the width direction of the absorbent core. The wide-side slit 41 of the embodiment of the present embodiment is formed over the entire widthwise direction of the absorbent core 31. The outer edge 41E of the wide slit 41 is positioned on the outer edge 31E of the absorbent core 31. Therefore, the absorbent core 31 of the excretory opening abutting region S1 and the absorbent core 31 of the rear side region S2 are separated by the wide-side slit 41 in the front-rear direction. Further, in the absorber 30 of the embodiment of the present embodiment, the outer edge of the absorbent core 31 substantially coincides with the outer edge of the absorber 30. Therefore, on the drawing, the outer edge 41E of the wide slit 41 is shown to coincide with the outer edge of the absorber 30.

The front and rear slits 42 extend in the front-back direction L in the rear side region S2. The front and rear slits 42 may be at least linearly extending in the front-rear direction, or may be parallel to the front-rear direction, or may be linear or curved with respect to the front-rear direction. Before and after the slit 42 The entire region of the front-rear direction L of the absorbent core 31 which can be formed in the rear side region S2 may be formed in a region of a portion of the rear-side region S2 in the front-rear direction of the absorbent core 31. The front and rear slits 42 of the embodiment of the present embodiment are the entire area in the front-rear direction L of the absorbent core formed in the rear side region S2. Therefore, the absorbent core 31 of the rear side region S2 is divided by the front and rear slits 42 in the widthwise direction.

Further, it is preferable that the front end edge of the front and rear slits 42 is located rearward from a position 3C to 30 mm rearward from the center in the front-rear direction of the flap 3. Further, it is preferable that the rear end edge of the front and rear slits 42 is located rearward from a position 3C to 200 mm rearward from the center in the front-rear direction of the flap 3. The length of the front and rear slits 42 in the front-rear direction is preferably 150 mm or more. In the section along the front-rear direction of the wearer's body, the groove between the buttocks is present from the vicinity of the perineum to the coccyx. According to such front and rear slits 42, the convex deformation of the sulcus before and after the slit is easily placed in the groove between the buttocks.

Further, the length of the front and rear slits 42 in the width direction is 1 mm or more and 15 mm or less. For example, when the length of the front and rear slits 42 in the width direction is less than 1 mm, when the front slit 42 is convexly deformed at the apex, the absorbent cores 31 disposed with the wide slits interfere with each other, and are not easily stabilized. Becomes convex. Further, when the length of the front and rear slits 42 in the widthwise direction exceeds 15 mm, when the convex deformed portion in which the front slit 42 is a vertex is disposed in the gap between the buttocks, the absorbent core does not exist in the convex deformed portion. Therefore, there is a case where the absorption of body fluids is insufficient.

The absorbent core 31 of the rear side region S2 has the first region 311 and the second outer side in the widthwise direction of the first region 311. Region 312 and third region 313. FIG. 1 shows a range in the width direction of the first region 311, the second region 312, and the third region 313. The first region 311, the second region 312, and the third region 313 are regions in which the absorption core 31 of the rear side region S2 is equally divided into three in the width direction. The first region 311 is a region in the center of the broad side direction among the three equally divided regions. The second region 312 is a region of one of the three equal-divided regions in the side of the wide side. The third region 313 is a region of the other side of the wide side in the three-divided region. In addition, the structure in which the length of the absorbent core in the rear side region S2 changes in the width direction is a region in which the absorbent core 31 adjacent to the wide-side slit 41 is equally divided into three in the width direction.

The front and rear slits 42 are provided in the first region 311. The front and rear slits 42 may also be disposed at the center of the wide side direction W of the absorbent article 1. The front and rear slits 42 are configured such that the absorbent core 31 of the rear side region S2 can be bent in the thickness direction T. More specifically, the absorbent core 31 constituting the rear side region S2 can be swelled toward the wearer side. The front and rear slits 42 constitute a first curved portion.

The wide-side slit 41 is connected to the front and rear slits 42. Therefore, the absorbent core 31 (for example, the absorbent core located on the left side of the wearer) of the absorbent core 31 of the excretion opening abutting region S1 and the widthwise direction W of the rear side region S2 in a plan view, and the rear view The absorbent core 31 on the other side in the width direction W of the side field S2 (for example, the absorbent core positioned on the right side of the wearer) is divided. Further, the wide slits 41 and the front and rear slits 42 are also separable.

The auxiliary slit 43 is connected to the front and rear slits 42 and is formerly The rear slit 42 extends to the outside of the wide side direction W. The auxiliary slit 43 may be at least linearly extending in the widthwise direction, or may be linearly parallel to the broad side direction, or may be linear or curved with respect to the broad side direction instead of being parallel to the broad side direction. The auxiliary slits 43 extend toward both sides in the width direction of the front and rear slits 42, respectively. The auxiliary slits 43 are plurally arranged at intervals in the front-rear direction L. The outer edge 43E of the auxiliary slit 43 is located further inside the widthwise direction W than the outer edge 31E of the absorbent core 31 of the rear side region S2. That is, an absorbing material is disposed on the outer side in the width direction of the auxiliary slit 43. Further, the auxiliary slit 43 may also extend to the outer edge 31E of the absorbent core 31 of the rear side domain S2. The auxiliary slit 43 extends from the inner side in the wide direction W (the front and rear slit 42 side) toward the outer side in the wide side direction W toward the front side.

The auxiliary slit 43 is configured to constitute a deformation base point in which the absorbent core 31 of the rear side region S2 is curved in the thickness direction. The auxiliary slit 43 is a second curved portion. Further, the first curved portion and the second curved portion may be formed not only by the front and rear slits but also by other structures. For example, the first curved portion and the second curved portion may be formed by at least a press portion for pressing the absorbent core in the thickness direction, or may be formed by a region having a different rigidity depending on the basis weight of the absorbent core and the periphery thereof. It can also be formed by embossing formed by the engagement of the concave portion and the convex portion.

In the absorbent article, at least a press portion 80 for pressing the absorbent core in the thickness direction is provided. The press portion 80 has a front side press portion 81, a rear side press portion 82, and a hip blade press portion 83. The front side press portion 81 is disposed in the drain port abutment field S1 and the front side field S3, and is compressed and absorbed in the thickness direction. Body 30 and surface sheet 11. The front side press portion 81 extends in the front-rear direction on both outer sides in the width direction from the center in the width direction of the drain opening contact region S1. The front end edge of the front side press portion 81 is a tapered shape of the wedge pin toward the front side.

The rear side press portion 82 is disposed in the second region 312 and the third region 313 of the rear side region S2, respectively, and compresses the absorber 30 and the surface sheet 11 in the thickness direction. The rear side press portion 82 is provided in a region where the absorbent core is disposed. The rear side press portion 82 extends in the front-rear direction L on both outer sides in the width direction of the auxiliary slit 43. The rear side press portion 82 may be at least linearly extending in the front-rear direction, or may be parallel to the front-rear direction, or may be curved in a direction inclined with respect to the front-rear direction. The rear side press portion 82 is located outside the auxiliary slit 43 in the widthwise direction, and is positioned further inward in the width direction than the outer edge of the absorbent core. The rear side press portion 82 does not overlap the auxiliary slit 43 in the thickness direction. Further, the front side press portion 81 and the rear side press portion 82 may be at least press-fitted with the absorbent core. The rear side press portion 82 is formed by compressing the absorbent core 31 and the skin surface sheet (surface sheet 11) from the skin facing surface side T1 toward the non-skin opposing surface side T2.

The buttocks press portion 83 is disposed in the rear side region S2, and compresses the side sheet 12 and the non-skin sheet 20 in the thickness direction. The hip blade press portion 83 is provided on the hip blade. The hip blade press portion 83 extends in the front-rear direction. The hip blade press portion 83 has a convex shape that protrudes outward in the width direction W.

The absorbent article 1 has a flap 3 and a hip flap 4. The flap 3 and the hip flap 4 are outside the absorbent core 31 that abuts the discharge port S1 from the drain port The side edge 31E extends outward in the widthwise direction.

The flap 3 has a side sheet 12 and a non-skin sheet 20. The center 3LC of the flap 3 in the front-rear direction is disposed to face the drain opening of the wearer. The flap 3 is a non-skin opposing surface side which is formed so as to be folded toward the non-skin surface sheet 20 and folded over to the crotch portion of the undergarment during use. The hip blade 4 is located on the rear side of the flap 3 and is disposed in the rear side domain S2. The buttocks 4 are folded so that the non-skin opposing surface side of the underwear is not folded, and is placed on the skin facing side of the underwear. Further, an absorbing material may be disposed on the flap 3 and the hip fin 4.

As shown in Fig. 2, in the non-skin opposing surface of the non-skin surface sheet 20, an adhesive region 60 to which an adhesive for fixing the absorbent article to the undergarment S is applied is provided. The adhesive region 60 has a first body adhesive region 61 and a second body adhesive region 62 disposed on the non-skin opposing surface side of the absorbent core 31, and a flap adhesive region 63 disposed on the flap 3; It is disposed in the hip pad adhesion area 64 of the hip blade 4.

The first body adhesion region 61 is separated from the second body adhesion region 62 in the front-rear direction, and is disposed in front of the second body adhesion region 62. The first body adhesion region 61 is disposed on the front side of the drain opening contact region S1 and the front side region S3 more than the wide side slit 41. The second body adhesion region 62 is disposed on the rear side region S2 on the rear side than the wide side slit 41.

The wide slit 41 and the front and rear slits 42 do not overlap the adhesive region 60 in the thickness direction T. In other words, the adhesive region 60 is not provided in a region where the wide-side slit 41 and the front and rear slits are arranged in plan view. also, In the flap 3 and the hip joint 4, an adhesive region 60 is provided.

The adhesive region 60 is covered by the release sheet 65 in a state before use. The peeling of the sheet 65 is a case of preventing deterioration of the use of the pre-adhesive. The release sheet 65 is peeled off by the wearer at the time of use. Further, in the absorbent article which does not have a release sheet, it is also possible to prevent the deterioration of the use of the pre-adhesive agent by the packaging sheet in which the absorbent article is packaged.

The measurement of the "thickness of the absorber" in the present specification is carried out by the following measurement methods.

When the package 1 or the like is sealed in the absorbent article 1, a sample which is taken out from the package and placed in an environment of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 12 hours is used.

The measurement position is set to the center of the width direction of the absorber. At the time of measurement, the absorbent article is not in a shortened state, but is measured while the stretchable member of the absorbent article is stretched. Further, portions other than the absorber such as the skin surface sheet other than the absorbent body and the non-skin surface sheet are removed. A needle gauge gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd. was used, and a test piece having a diameter of 10 mm was prepared on the gauge head, and a test piece having a size of 30 mm × 30 mm was prepared, and the thickness of the test piece was measured. The measuring instrument was adjusted to a measuring pressure of 3 g/cm ² with respect to the test piece. Here, the above measurement was performed in various states for 10 samples, and the average value was taken as the length.

In addition, the measurement of "basis weight and density of an absorber" in this specification is performed by the following measurement methods.

When the absorbent article 1 such as a package is sealed, it is taken out from the package and is relatively wet at 20 ° C ± 2 ° C in such a state. The sample was placed in an environment of 60% ± 5% RH for 12 hours.

The absorbent article packaged in the package unpacks the package, unfolds the folded absorbent article, and measures the thickness and area of the portion of the basis weight and density. Next, the portion where the basis weight and the density were measured was cut out from the absorbent article to measure the weight of the cut portion. Next, portions other than the absorber such as the surface sheet and the back sheet were removed from the cut portions, and the weight of the absorber was measured. The basis weight was calculated from the weight of the absorber and the area of the portion where the basis weight and density were measured. The density is calculated based on the basis weight and thickness.

In addition, the measurement of "length" in this specification is performed by the following measurement methods.

When the absorbent article 1 such as a package is sealed, a sample which is taken out from the package and placed in an environment of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 12 hours is used.

Then, a spring gauge (belt: polyvinyl chloride coated with glass fiber) manufactured by Affinity Co., Ltd. was used, and the length of this state of the measurement target portion was measured along the measurement target portion. Here, the above measurement was performed in various states for 10 samples, and the average value was taken as the length.

(2) Effect ‧ Effect

In the absorbent article 1 of the present embodiment, the front and rear slits 42 provided at the center in the width direction of the rear side region S2 are swelled toward the wearer side as the first curved portion. By the front and rear slits 42, the rear side region S2 of the discharge port abutting region S1 at the rear allows the absorbent core 31 to fit between the wearer's buttocks. gap. Moreover, the absorbent article 1 of the embodiment of the present embodiment is formed with a deformation base point extending in the widthwise direction by the auxiliary slit 43 as the second curved portion. The absorbent core 31 of the rear side region S2 is configured to be capable of assisting the slit 43 as a base point deformation, and is easily arranged along a curve of the body along the cross section of the body in the front-rear direction L.

Fig. 4 is a cross-sectional view showing a state in which the absorbent article 1 is attached by an installer. 4(a) is a cross-sectional view in the width direction along the drain port abutment region S1, and FIG. 4(b) is a cross-sectional view in the widthwise direction in the rear side region S2. 4(a) is based on the B-B cross section of FIG. 1, and FIG. 4(b) is based on the C-C cross section of FIG. In Fig. 4, the line of the wearer's body is indicated by a two-dot chain line. When the absorbent article 1 as a sanitary napkin is used, the absorbent article is caught in the undergarment S, and the undergarment is pulled up for wearing. The width of the absorbent core of a general sanitary napkin is designed to be wider than the dimension of the wide side of the wearer's crotch. Therefore, the drain opening abutment region S1 of the absorbent article 1 in the state of being attached is a force that is received from the outer side in the widthwise direction toward the inner side in the wide side direction by the legs of the installer.

The cross-sectional shape of the body of the wearer along the widthwise direction W of the absorbent core 31 is different from the vicinity of the buttocks in the vicinity of the underarm. Specifically, the cross-sectional shape of the body in the broad side direction near the armpit of the wearer (near the vaginal opening from the blood) is that the labia majora protrudes more than the root of the thigh and is toward the absorbent article side. Prominent convex shape. In the armpit field of the wearer, the drain opening abutment field S1 of the absorbent article is disposed to face each other. The absorbent article 1 is attached to the undergarment S and is used in the state of the wearer. Next, the absorbent core of the excretory opening abutment field S1 is pushed down by the protrusion of the labia majora, and is deformed to bulge toward the non-skin opposing side. Under the armpit of the wearer, the absorbent core of the excretory opening abutting domain S1 is disposed along the body, and the leakage under the armpit can be suppressed.

Moreover, it is located further behind the perineal portion located at the rear position than the labia majora of the wearer, and the anus and the sulcus are located here. The cross-sectional shape of the body along the broad side direction near the rear of the perineal portion is a shape in which the center of the broad side direction is recessed. The rear side field S2 of the absorbent article is disposed opposite the buttocks of the wearer. For example, the sanitary tampon for night use is often used in a sleeping position lying on its back. Most of the leakage is when a large amount of menstrual blood is discharged, and when the menstrual blood just below the vaginal opening is not absorbed, and the absorbent body located directly under the vaginal opening does not fit the body, the menstrual blood flows into the concave portion than the buttocks, so that The menstrual blood is exposed along the body. When the gap between the buttocks of the body and the absorbent article is generated, especially in the sanitary napkin for night use, there is a concern that the menstrual blood flows along the body to the back side and leaks from the back of the absorbent article.

In the absorbent article of the embodiment, the side portion of the absorbent core 31 is pushed down by the left and right buttocks in the rear side region S2. Therefore, the side portion in the width direction of the absorbent core in the rear side region is more force-receiving than the center in the width direction of the absorbent core 31 in the rear side region. When the side portions of the absorbent core are pushed down by the left and right buttocks, the center of the absorbent body in the rear side region in the widthwise direction is swelled toward the wearer side with the front and rear slits as the apexes. Therefore, the center of the absorbent core 31 of the rear side region S2 in the widthwise direction is easily placed in the depression between the buttocks, and the absorbent core 31 is further disposed along the buttocks of the wearer. The result is preventable The body fluid such as menstrual blood flows along the body to the back side and leaks from the back of the absorbent article.

Further, the center of the absorbent core 31 of the rear side region S2 in the widthwise direction is formed with a front and rear slit 42 penetrating the thickness direction, and substantially no absorbing material is disposed. Therefore, the thickness of the raised portion, especially the apex, becomes thin. In addition, when the absorbing material is disposed in the front and rear slits 42, the absorbent core 31 is easily flattened by the rigidity of the absorbing material, and the absorbent core 31 is less likely to be bent at the base point of the front and rear slits 42. However, in the front and rear slits 42, since the absorbent material is not substantially disposed, the absorbent core 31 is easily maintained in a state in which the front and rear slits 42 are bent as a base point. Therefore, the absorbent article 1 can be placed closer to the gap between the buttocks of the wearer, and leakage in the buttocks can be suppressed.

Fig. 5 is a cross-sectional view showing a state in which the absorbent article 1 is attached by an installer. Fig. 5 is a cross-sectional view taken along the front-back direction L of the body, taken along the line A-A of Fig. 1 as a reference. In Fig. 5, the line of the wearer's body is indicated by a two-dot chain line. In the absorbent article 1, a deformation base point extending in the width direction is formed by the auxiliary slit 43. The absorbent core 31 of the rear side region S2 is configured to be capable of assisting the slit 43 as a base point deformation, and is easily arranged along a curve of the body along the cross section of the body in the front-rear direction L. In addition, when the absorbent core 31 of the rear side region S2 is fitted along the front-rear direction of the body, the absorbent core 31 adjoining in the front-rear direction is sandwiched by the auxiliary slit 43 by appropriately changing the width of the auxiliary slit 43. The distance between them changes. Therefore, it is easy to arrange the absorbent core 31 along the curve of the body along the cross section in the front-rear direction of the body.

The absorbent core 31 of the rear side domain S2 has a front slit 42 as a top When the dots are raised, the raised absorbent core 31 increases the bending rigidity in the front-rear direction L. Therefore, it may become difficult to arrange the absorbent core 31 along the front-rear direction L of the body. However, since the auxiliary slit 43 is provided, the rigidity of the absorbent core 31 is lowered by the auxiliary slit 43 to promote deformation of the absorbent core 31 along the curve of the buttocks.

Further, when the outer edge 43E of the auxiliary slit 43 reaches the outer edge 31E of the absorbent core 31, the absorbent core 31 extends flat in a region from the center portion of the gap abutting the buttocks to the outer edge of the absorbent core 31, and the core 31 is absorbed. The outer edge 31E may have a side portion in the wide side direction of the buttocks (covering the outer side in the wider side than the apex of the buttocks). However, since the outer edge 43E of the auxiliary slit 43 is located further inside the widthwise direction than the outer edge 31E of the absorbent core 31, the absorbent core 31 does not break in the front-rear direction L. Further, when the auxiliary slit 43 is deformed as a base point, the absorbent core 31 disposed outside the wide slit direction is a fulcrum than the auxiliary slit 43. Therefore, when the absorbent core 31 is deformed along the curve of the body along the front-rear direction L, the deformation can be performed in a state where the front-rear direction L is continuous. Therefore, the absorbent core 31 of the rear side region S2 easily becomes a cup shape that wraps the side portion of the buttocks, and can effectively suppress leakage from the buttocks.

In addition, the absorbent core 31 of the rear side region S2 is deformed on the left and right sides by the front and rear slits 42, and the absorbent core 31 of the rear side region S2 can track the movement of the body on the left and right sides. For example, when the wearer walks, the left and right feet are alternately operated. As the foot moves, the buttocks alternately move left and right. For example, when the broad side direction of the absorbent core 31 of the rear side domain S2 is integrally integrated and moved, the entire absorbent core 31 of the rear side domain S2 is due to the foot. The action to be replaced moves left and right, and the feeling of fit in the buttocks is unstable. However, the absorbent core 31 of the rear side region S2 is divided by the right and left slits 42 so that the single absorbent core 31 of the front and rear slits 42 is moved in accordance with the alternate operation of the feet. Therefore, the single absorbent core 31 sandwiching the front and rear slits 42 tracks the movement of the body, so that the other absorbent core 31 can be continuously attached to the body. Further, by stabilizing the absorbent core of the rear side region S2 so as to continue to adhere to the buttocks, it is possible to suppress the friction between the buttocks of the wearer and the absorbent article, and it is possible to suppress the deterioration of the wearing feeling of the skin due to friction.

The absorbent core 31 may be provided with a wide-side slit 41 extending in the widthwise direction W between the drain opening contact region S1 and the rear side region S2. Since the wide-side slit 41 is provided between the drain opening contact region S1 and the rear side region S2, the deformation of the absorbent core 31 is prevented from being propagated to the entire front-rear direction of the absorbent core 31 by the wide-side slit 41, and The absorbent core 31 of the excretory opening abutting domain S1 and the absorbent core 31 of the rear side domain S2 are deformed in different aspects.

As described above, the cross-sectional shape of the body of the wearer along the widthwise direction W of the absorbent core 31 is different from the vicinity of the buttocks in the vicinity of the underarm. The absorbent core 31 of the excretory opening abutment field S1 is pushed down by the protrusion of the labia majora of the wearer, and is deformed to bulge toward the non-skin opposing surface side. The deformation of the absorbent core 31 of the drain opening abutment field S1 propagates to the rear in a region reaching the wide-side slit 41. However, the deformation of the absorbent core of the excretory opening abutment field S1 is broken by the wide-side slit 41 and is not easily propagated to the absorbent core 31 of the rear side domain S2. The absorbent core 31 of the rear side region S2 is swelled toward the wearer side and is disposed in a gap between the left and right buttocks. Therefore, on the buttocks of the wearer, the absorbent core 31 along the back side domain S2 The body is configured to suppress leakage of the buttocks.

The auxiliary slits 43 may be provided at a plurality of intervals in the front-rear direction L. The cross-sectional shape of the wearer's body in the front-rear direction is a curved shape. The plurality of auxiliary slits 43 are formed in the absorbent core 31 of the rear side region S2, and the plurality of auxiliary slits 43 separated in the front-rear direction L are used as the base point. The absorbent core 31 of the rear side region S2 is easily deformed. Therefore, the absorbent core 31 of the rear side domain S2 is disposed along both the curve of the body and the gap of the buttocks.

Further, in the absorbent core 31 of the present embodiment, as shown in FIG. 3, the first auxiliary slit 431, the second auxiliary slit 432, the third auxiliary slit 433, and the fourth auxiliary slit 434 are provided from the front side. . The second auxiliary slit 432 is pressed by the buttocks when lying on the back, and is easily maintained in a flat state. The second auxiliary slit 432 is a force that is pressed by the buttocks, and the first auxiliary slit 431 that is closer to the front side than the second auxiliary slit 432 can be placed along the bulge between the buttocks and the root of the foot. In addition, the third auxiliary slit 433 is in a state other than the sleeping posture (for example, a standing posture), and is disposed at a position that abuts against the buttocks when the curved shape greatly changes when viewed from the side of the body. The absorbent core 31 is easily deformed by the third auxiliary slit 433 as a base point, and the absorbent core 31 can be disposed along a portion that abuts against the buttocks that are greatly curved in a curved shape.

In addition, the first auxiliary slits 431 and the fourth auxiliary slits 434 are disposed at positions at which the creases are folded when the absorbent article is folded at the basis of the creases along the widthwise direction. Since the auxiliary slit 43 is disposed at a position where the crease is abutted, the rigidity is stabilized by the auxiliary slit 43 being lowered. Stack of absorbent articles. Further, when the absorbent article is unfolded (used), since the folding habit due to the crease is not easily obtained, the absorbent article can be easily deformed in an expected state. Specifically, it is easy to arrange the absorbent article so as to fit the gap between the buttocks. Further, for example, the crease of the absorbent article is not provided with a structure for sewing a slit such as a slit, and the absorbent core in the rear side region has a relatively strong folding habit extending in the width direction. Therefore, the absorbent article is less likely to be softly bonded from the ventral side of the body toward the back side, and leakage is likely to occur due to the gap between the body and the absorbent article. On the other hand, by providing the auxiliary slit 43 on the crease of the absorbent article, the folding habit is not easily left, and the position where the auxiliary slit 43 is formed allows the absorbent article to be attached to the body.

The auxiliary slits 43 may also extend from the outer side of the front and rear slits 42 toward the outer side toward the front side in the widthwise direction. The absorbent core 31 of the rear side region S2 is pressed from the back side to the rear side by the buttocks, so that the force is applied from the rear side toward the front side. Since the auxiliary slit 43 extends forward from the outer side of the front and rear slits 42 toward the outer side in the wide side direction, the auxiliary slit 43 can be dispersed to the outer side in the wide side direction by the force side from the rear side toward the front side. Front side. The auxiliary slit 43 disperses the force from the rear toward the front side, and is easily deformed along the force, and the absorbent core 31 can be further disposed along the buttocks.

The absorbent material may not be disposed between the skin surface sheet 10 and the non-skin surface sheet 20 which are overlapped in the thickness direction in the region of the front and rear slits 42. Since the absorbing material is not disposed in the region overlapping the front and rear slits 42, the thickness of the apex which is raised by the front and rear slits 42 is changed to be thin. Therefore, the absorbent article can be more closely fitted to the gap between the buttocks of the wearer. Set to prevent leakage in the buttocks.

The front and rear slits 42 may not overlap the adhesive region 60 in the thickness direction T. Since the front and rear slits 42 are not overlapped in the adhesive region in the thickness direction, the deformation of the front and rear slits 42 is suppressed from being excessively hindered by the undergarment, and the absorbent core 31 is easily deformed before the slit 42 is the base point.

In the rear side region S2, the hip joint 4 extending outward in the widthwise direction from the outer edge 31E of the absorbent core 31 of the drain opening contact region S1 may be provided. By providing the hip blades 4 in the rear side region S2, not only the side portions (the second region and the third region) of the core 31 are absorbed, but the hip blades 4 can be pressed. Therefore, the absorbent core 31 is more easily swelled as the apex of the slit 42 in the front and the rear. Therefore, by arranging the absorbent core 31 along the buttocks of the wearer, it is easier to obtain an effect of suppressing leakage in the buttocks.

The hip blade 4 may be provided with a convex hip press portion 83 that protrudes outward in the widthwise direction W. By providing the hip-shoulder press portion 83, the hip-wings 4 are easily deformed along the curve of the buttocks, and the hip-wings 4 can be disposed to cover the curve of the buttocks. Therefore, leakage in the buttocks can be further suppressed.

The excretory opening abutment region S1 may have a middle-high portion 33 that is located on the inner side in the widthwise direction of the outer edge 31E of the absorbent core 31. By providing the middle-high portion 33 in the drain opening contact region S1, the center of the drain-side contact region S1 in the widthwise direction (the inner side of the outer edge 31E of the absorbent core 31 in the wider direction) is easier to make the absorbent core tight. Stick to the installer. Therefore, as shown in the cross-sectional view shown in Fig. 4 (a), the adhesion in the drain opening abutment region S1 can be improved. As a result, the adhesiveness of the absorbent article in the rear side region S2 and the adhesion to the absorbent article in the excretion opening abutment region S1 can be achieved.

(3) Other embodiments

The absorbent article of the embodiment of the present invention is a sanitary napkin for night use in which the undergarment is attached, and in another embodiment, it may be attached to an absorbent pad such as a urine absorbing pad of a disposable diaper.

Further, the wide-side slit 41, the front and rear slits 42, and the auxiliary slit 43 of the present embodiment have a design base weight of 0, but the wide-side slit 41, the front and rear slits 42, and the auxiliary slit 43 may be used. It may also be a low basis weight region having a lower basis weight than the surrounding absorbent core. Further, the auxiliary slit 43 may extend at least in the width direction, may have a curved shape, may have a rhombic shape in plan view, and may have an inverted triangular shape in plan view (having a vertex toward the rear side) shape).

As described above, the present invention will be described in detail using the above-described embodiments, but the present invention is obviously not limited to the embodiments described in the present specification. The present invention is intended to be modified and modified without departing from the scope of the invention. Therefore, the description of the specification is intended to be illustrative, and is not intended to limit the invention.

In addition, the entire contents of Japanese Patent Application No. 2014-260773, filed on Dec. 24, 2014, is hereby incorporated by reference.

[Industrial availability]

According to the present invention, it is possible to provide a type of absorbent core for use The buttocks of the person are attached to each other to suppress leakage of the absorbent article.

1‧‧‧Absorbables

3‧‧‧ wing

Center of the direction of 3LC‧‧‧

4‧‧‧ hip wing

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧ side flakes

30‧‧‧Acceptor

31E‧‧‧ outer edge of the absorbent core

311‧‧‧1st area

312‧‧‧2nd area

313‧‧‧3rd area

33‧‧‧High and Medium Department

41‧‧‧ Wide slits

41E‧‧‧ outer edge

42‧‧‧ before and after the slit (1st part)

43E‧‧‧ outer edge

43‧‧‧Auxiliary Slit (2nd part)

80‧‧‧Squeeze Department

81‧‧‧Excretion port press section

82‧‧‧Back side press section

83‧‧‧The hip press section

L‧‧‧ direction

W‧‧‧Broadside direction

Claims (10)

An absorbent article comprising: a discharge port abutment region opposite to an exhaust port of an installer; a rear side region further positioned rearward than the drain port abutment domain; and being disposed in the drain port abutment domain An absorbent article according to the absorbent core of the rear side, characterized in that the absorbent core in the rear side region is provided at a center in a width direction of the absorbent core, and extends toward the front-rear direction of the absorbent article. a front and rear slit; and an auxiliary slit extending from the front and rear slits and extending outward from the front and rear slits toward the widthwise direction, the outer edge of the auxiliary slit being the absorbent core of the rear side The outer edge is located further inside the broad side. The absorbent article according to claim 1, wherein the absorbent core is provided with a wide side thinner extending in a width direction of the absorbent article between the drain opening contact region and the rear side region. Seam. The absorbent article according to the first or second aspect of the invention, wherein the auxiliary slits are provided at a plurality of intervals in the front-rear direction. The absorbent article according to the first or second aspect of the invention, wherein the auxiliary slit is extended to the front side from the outer side of the front and rear slits toward the widthwise direction. The absorbent article according to claim 1 or 2, further comprising: a skin sheet which is located on the opposite side of the skin from the absorbent core; The non-skin sheet having the non-skin facing surface side of the absorbent core is not disposed with the absorbent material between the skin sheet and the non-skin sheet in a region overlapping the front and rear slits. The absorbent article according to the first aspect or the second aspect of the invention, wherein the non-skin surface sheet on the non-skin opposing surface side of the absorbent core is provided, and the non-skin surface sheet is non-skin-opposed The surface is provided with an adhesive region coated with an adhesive for fixing the absorbent article to the undergarment, and the front and rear slits are not overlapped with the adhesive region in the thickness direction. The absorbent article according to claim 1 or 2, wherein the rear side region is provided with an outer side of the outer side of the absorbent core that is in contact with the excretion opening, and extends outward in the widthwise direction. Hip wing. The absorbent article according to claim 7, wherein the hip flap is a convex hip press portion that is provided to protrude outward in the widthwise direction. The absorbent article according to the first or second aspect of the invention, wherein the excretion opening abutting region is a middle-high portion having an inner side in a widthwise direction of an outer edge of the absorbent core, and the middle and high portions The thickness is thicker than the thickness of the outer edge of the aforementioned absorbent core in the aforementioned discharge port abutment domain. An absorbent article having: a discharge port abutment region opposite to a drain opening of an installer; a rear side region further positioned rearward than the drain port abutment domain; An absorbent article disposed in the absorbent core of the excretion opening abutment region and the rear side region, wherein the absorbent core in the rear side region is provided with a first curved portion which is configured to be The center of the absorbent core in the width direction of the rear side is convexly curved toward the wearer side; and the second curved portion is a deformed base point that bends the absorbent core of the rear side in the thickness direction, and is oriented toward the wide side The outer edge of the second curved portion extends further inward in the widthwise direction than the outer edge of the absorbent core in the rear side region.