WO2016199663A1

WO2016199663A1 - Absorbent article

Info

Publication number: WO2016199663A1
Application number: PCT/JP2016/066356
Authority: WO
Inventors: 西谷　和也; 英之木下; 真理安井
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-06-08
Filing date: 2016-06-02
Publication date: 2016-12-15
Also published as: JP6043406B1; JP2017000331A

Abstract

Provided is an absorbent article that affords a sense of security to a wearer by making it apparent that the leakage of bodily fluid from the gluteal region is prevented and that the article is comfortable to wear. This absorbent article (1) has a fore-aft direction (L) and width direction (W) that are orthogonal to each other, a center region (S1) that is disposed under the crotch of a wearer, a rear-side region (S3) that is located to the rear side of the center region (S1), and an absorbent core (31) that is disposed in at least the rear-side region. A hip flap that bulges to the outside in the width direction (W) is provided in the rear-side region (S3), a plurality of first and second compression portions (85, 87) that are discretely aligned along the outer edge of the hip flap (4) are provided further to the outside in the width direction (W) than the outer edge (31E) of the absorbent core (31) in the rear-side region (S3), the second compression portions (87) are provided further to the inside than the first compression portions (85), and the pitch of the second compression portions (87) is smaller than the pitch of the first compression portions (85).

Description

Absorbent articles

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

As an absorbent article such as a sanitary napkin, one having a hip flap is known. Patent document 1 is disclosing the napkin which has a hip flap. The hip flap is formed in a portion where the wearer's buttocks hit. The hip flap projects greatly outward in the width direction of the absorbent article. Two to five convex curves and concave curves are formed along the outline of the hip flap. Moreover, the emboss is formed along the outline of the hip flap. The emboss is also arranged in a region outside the virtual curve when a virtual curve passing through the bottom of the concave curve is drawn.

JP 2014-144140 A

The hip flap of the absorbent article is a part that contacts the wearer's buttocks. Depending on the shape and appearance of the hip flap, the wearer may feel anxiety that body fluid (for example, menstrual blood) may leak from the buttocks or may feel uncomfortable. is there.

This invention is made | formed in view of the above-mentioned subject, and aims at providing the absorbent article which can give a sense of security by a wearer.

The absorbent article according to the present disclosure includes a front-rear direction and a width direction orthogonal to each other, a central region disposed in a wearer's crotch, a rear side region located on the rear side of the central region, and at least the rear side region A hip flap that is swollen outward in the width direction is provided in the rear side region, and is wider than the outer edge of the absorbent core in the rear side region. A plurality of first compressed parts arranged discretely along the outer edge of the hip flap, and the outer side of the absorbent core in the rear side region in the width direction, and the Inside the plurality of first pressing parts, a plurality of second pressing parts arranged discretely along the outer edge of the hip flap are provided, and the pitch of the plurality of second pressing parts is: It is smaller than the pitch of the plurality of first pressing parts.

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. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG. It is the top view to which some hip flaps were expanded. FIG. 5 is a cross-sectional view of the absorbent article during wearing along line 5A-5A in FIG.

Hereinafter, the absorbent article according to the 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 are different 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 is non-skin from the front-rear direction L extending to the wearer's front side (abdomen side) and rear side (back side), the width direction W orthogonal to the front-rear direction L, and the skin-facing surface side T1 of the wearer. And a thickness direction T extending to the facing surface side T2. The skin facing surface side T1 corresponds to the side facing the wearer's skin when in use. The non-skin facing surface side T2 corresponds to the side opposite to the skin facing surface side T1.

The absorbent article 1 has a central area S1, a front side area S2, and a rear side area S3. Central area S1 is located in the area | region which contact | abuts a wearer's excretion opening | mouth (for example, vaginal opening). The central area S1 is an area located in the crotch part of the underwear with the absorbent article attached to the underwear. That is, the central 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 central area S1. The rear side area S3 is located behind the central area S1. 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 central region S1.

In the central area S1, a wing 3 described later may be provided. In this case, it can be said that the central area S1 is an area where the wings 3 are provided in the front-rear direction L. Further, a hip flap 4 swelled outward in the width direction W may be provided in the rear side region S3.

A width slit 41 to be described later may be provided at the boundary between the central area S1 and the rear area S3. In this case, the front end edge of the width slit 41 may define the rear end edge of the central area S1, and the rear end edge of the width slit 41 may define the front end edge of the rear side area S3.

The rear edge of the rear side region S3 defines the rear edge of the absorbent article 1. The boundary between the central area S1 and the front side area S2 corresponds to the front edge of the wing 3. The front edge of the wing 3 is a root of the wing 3, and is a portion located on the front side of two portions that are recessed most inward in the width direction W in the wing 3. The base of the front side of the wing 3 may be located at the boundary between the central region S1 and the front side region S2. The front edge of the front region S2 defines the front edge of the absorbent article 1.

The absorbent article 1 has a skin sheet 10, a non-skin sheet 20, and an absorber 30. The skin sheet 10 is provided on the skin facing surface side T <b> 1 from the absorbent body 30. The non-skin surface sheet 20 is provided closer to the non-skin facing surface side T2 than the absorber 30. The absorber 30 is provided between the skin sheet 10 and the non-skin sheet 20.

The skin sheet 10 may have a surface sheet 11 and a side sheet 12. The top sheet 11 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 11 covers at least the center of the absorbent body 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 side sheet 12 covers the outer edge (outer end portion in the width direction W) of the top sheet 11 and extends outward in the width direction W from the top sheet 11. 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 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 can be selected from the same material as the top sheet 11. However, in order to prevent body fluid from flowing out of the absorbent article 1 over the side sheet 12, the side sheet 12 preferably has hydrophobicity or water repellency. The side sheet 12 is disposed on the outer edge of the absorbent body 30, the wing 3 and the hip flap 4.

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 absorbent body 30 has an absorbent core 31 in which absorbent materials are laminated, and a core wrap 32 that covers the absorbent core 31. The absorbent material can be formed from, for example, hydrophilic fibers, pulp and SAP.

The absorption core 31 is disposed at least in the central area S1 and the rear side area S3. The absorbent core 31 may be separately disposed in each of the central region S1 and the rear side region S3, or may be integrally disposed across the central region S1 and the rear side region S3. Further, the absorbent core 31 may extend from the central region S1 to the front side region S2.

The absorbent core 31 has a middle-high portion 33 located on the inner side in the width direction W than the outer edge 31E of the absorbent core 31. The thickness of the middle high portion 33 of the absorbent core is thicker than the thickness of the absorbent core around the middle high portion 33. The middle-high portion 33 may be located in the central area S1. The basis weight of the absorbent material of the middle-high portion 33 may be higher than the basis weight of the absorbent material located at the outer edge 31E of the absorbent core 31 in the central region S1. The middle-high part 33 may be located on the rear side in the central area S <b> 1 and may be adjacent to the width slit 41.

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

The wing 3 may have a side sheet 12 and a non-skin surface sheet 20. The center of the wing 3 in the front-rear direction L faces the wearer's excretion opening. 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 facing 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.

The outer edge 4E of the hip flap may be formed in a corrugated shape having a large number of convex portions 4F (see also FIG. 4). FIG. 4 is an enlarged view of the region R4 shown in FIG. 2, and is a plan view in which a part of the hip flap 4 is enlarged. The plurality of convex portions 4F preferably extend from the outer edge 4E of one hip flap 4 to the outer edge 4E of the other hip flap 4 via the rear end edge of the rear side region S3. Instead, a large number of convex portions 4F may be formed only on the outer edges 4E of the pair of hip flaps 4. The width W1 of each convex portion 4F is preferably 20 mm or less, more preferably 10 mm or less. Moreover, it is preferable that the width W1 of each convex part 4F is 3 mm or more.

The width of the hip flap 4 in the width direction W of the absorbent article 1 may be substantially increased from the front side to the rear side in the region on the front side of the position P1 of the maximum width of the hip flap 4. Specifically, without considering the shape of the convex portion 4F of the outer edge 4E of the hip flap, the entire shape of the hip flap 4 is rearward from the front side in the region on the front side of the position P1 of the maximum width of the hip flap 4. It is preferable that it becomes large as it goes to the side. More specifically, the imaginary line IL obtained by connecting the flanges of the respective convex portions 4F formed on the outer edge 4E of the hip flap 4 is in the region on the front side of the position P1 of the maximum width of the hip flap 4. As it goes from the front side to the rear side, it may swell monotonously outward in the width direction W.

Moreover, even if the width | variety of the hip flap 4 in the width direction W of the absorbent article 1 becomes substantially small as it goes to the rear side from the front side in the area | region of the rear side rather than the position P1 of the maximum width of the hip flap 4. FIG. Good. Instead of this, the width of the hip flap 4 in the width direction W of the absorbent article 1 may be substantially reduced from the front side to the rear side in the rear region of the adhesive region 64 described later. Specifically, without considering the shape of the convex portion 4F of the outer edge 4E of the hip flap, the overall shape of the hip flap 4 is monotonous as it goes from the front side to the rear side in the region behind the adhesive region 64. It may be narrower. More specifically, the imaginary line IL obtained by connecting the flanges of the respective convex portions 4F formed on the outer edge 4E of the hip flap 4 is from the front side to the rear side in the region behind the adhesive region 64. As it goes, it narrows monotonously inside the width direction W. In addition, the position P1 of the maximum width | variety of a hip flap is located in the back side rather than the center of the back side area S3 in the front-back direction L.

The hip flap 4 may have a side sheet 12 and a non-skin surface sheet 20. Instead of this, the hip flap 4 may not have the side seats 12. In this case, the top sheet 11 only needs to extend to the area of the hip flap 4. In this case, the region where the multiple convex portions 4F are formed can be configured by the same number of sheets.

(2) Slit of Absorption Core The absorption core 31 may have a width slit 41, a front / rear slit 42, and an auxiliary slit 43. The width slit 41, the front and rear slits 42, and the auxiliary slit 43 are formed so that the absorber 30 can be bent in the thickness direction T.

The basis weight of the absorbent material of the width slit 41, the front / rear slit 42 and the auxiliary slit 43 is lower than the basis weight of the absorbent core 31 around the

slits

41, 42, 43. The width slit 41, the front and rear slits 42, and the auxiliary slit 43 may be a region where the basis weight of the absorbent material is 0, that is, a region where no absorbent material is provided.

The width slit 41, the front and rear slits 42, and the auxiliary slit 43 are boundaries where the rigidity of the absorbent article 1 changes. For example, the rigidity of the area on the front side of the width slit 41 may be different from the rigidity of the area on the rear side of the width slit 41. More specifically, the basis weight of the absorbent material in the region in front of the width slit 41 may be higher than the basis weight of the absorbent material of the width slit 41. Further, the basis weight of the absorbent material in the region behind the width slit 41 may be higher than the basis weight of the absorbent material of the width slit 41.

The width slit 41 extends in the width direction W between the central region S1 and the rear region S3. The width slit 41 only needs to extend at least in the width direction W. The width slit 41 may extend linearly in parallel with the width direction W, or may be inclined with respect to the width direction W and extend linearly or curvedly.

The width slit 41 of the present embodiment has a curved shape in which the center in the width direction W of the width slit 41 protrudes backward. More specifically, the center of the width slit 41 in the width direction W is located behind the outer edge of the width slit 41. The length of the width slit 41 in the front-rear direction L may be constant or may vary. The length of the width slit 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 30 mm or less, at the position of the center line CL passing through the center of the absorbent article in the width direction W. . Thereby, the absorber 30 becomes easy to bend along a wearer's skin in the width slit 41, and the absorber 30 can be fitted to a wearer's skin.

The length in the width direction of the width slit 41 is preferably 25 mm or more. Thereby, it is possible to suppress the movement of the central region S1 of the absorbent article 1 from being transmitted to the rear side region S3.

The width slit 41 may extend from one end to the other end in the width direction W of the absorbent core 31. In this case, the outer edge of the width slit 41 in the width direction W is located at the outer edge 31E of the absorbent core 31. Thereby, the absorption core 31 in the central region S1 is divided from the absorption core 31 in the rear region S3 by the width slit 41. Instead, the width slit 41 may straddle the center line CL and partially extend in the width direction W of the absorbent core 31.

The front / rear slit 42 extends in the front / rear direction L along the center line CL of the absorbent article in the rear side region S3. The front / rear slit 42 may extend linearly in parallel to the front / rear direction L, or may extend along the center line CL in a linear or curved manner inclined with respect to the front / rear direction L. The front and rear slits 42 may be formed in the entire front and rear direction L of the absorbent core 31 in the rear side region S3. Instead, the front / rear slit 42 may be formed in a partial region in the front / rear direction of the absorbent core 31 in the rear side region S3.

The front edge of the front / rear slit 42 is preferably located 30 mm or more behind the center of the wing 3 in the front / rear direction L. The rear end edge of the front / rear slit 42 is preferably located 200 mm or more rearward from the center in the front / rear direction L of the wing 3. The length in the front-rear direction L of the front-rear slit 42 is preferably 150 mm or more. 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. The front and rear slits 42 make it easier to deform the absorber 30 in a convex shape with the front and rear slits as apexes. That is, it becomes easy to deform | transform so that the absorber 30 may fit in the groove | channel between ridges.

Preferably, the length of the front / rear slit 42 in the width direction W is 1 mm or more and 15 mm or less. Thereby, the absorber 30 can be made easy to deform | transform so that it may fit in the groove | channel between ridges.

The front and rear slits 42 may be connected to the width slit 41. In this case, in plan view, the absorbent core 31 in the central region S1, the absorbent core 31 on one side in the width direction W of the rear side region S3, and the absorbent core 31 on the other side in the width direction W of the rear side region S3 Is divided. Alternatively, the front / rear slit 42 may be separated from the width slit 41.

The auxiliary slit 43 is connected to the front / rear slit 42 and extends outward in the width direction W from the front / rear slit 42. The auxiliary slit 43 only needs to extend at least in the width direction W. The auxiliary slits 43 may be formed linearly in parallel with the width direction W, or may be formed linearly or curvedly inclined with respect to the width direction W. The auxiliary slit 43 is preferably inclined forward as it goes from the inner side to the outer side in the width direction W. The auxiliary slits 43 extend on both sides in the width direction W of the front and rear slits 42. A plurality of auxiliary slits 43 may be provided at intervals in the front-rear direction L.

The outer edge of the auxiliary slit 43 in the width direction W is located inside the outer edge of the absorbent core 31 in the rear side region S3. That is, an absorbing material is provided outside the auxiliary slit 43 in the width direction. Instead, the auxiliary slit 43 may extend to the outer edge of the absorbent core 31 in the rear side region S3.

The auxiliary slit 43 constitutes a deformation base point where the absorber 30 in the rear side region S3 bends in the thickness direction T. That is, the absorbent article 1 is easily bent at the auxiliary slit 43. Thereby, when the absorbent article 1 is attached to the wearer, the absorbent body 30 can be easily fitted to the curved buttocks of the wearer.

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

The front pressing part 81 is provided in the central area S1 and the front side area S2. The front pressing part 81 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction T. The front side compressed portion 81 has portions along the front-rear direction L provided on both sides in the width direction W of the middle-high portion 33. The front side compressed part 81 may prescribe | regulate the side edge of the width direction W both sides of the middle-high part 33. FIG.

The front pressing part 81 is bent in the width direction in the vicinity of the front end edge of the absorbent core 31, and is continuously connected to the U shape. Instead of this, the front pressing part 81 may be provided separately on both sides in the width direction W of the middle-high part 33. That is, a pair of front side 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 in the rear side region S3. The longitudinal pressing part 82 may be formed in front of the position P1 of the maximum width of the hip flap 4. 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 portion 82 extends in the front-rear direction L on both outer sides of the auxiliary slit 43 in the width direction W. The longitudinal pressing part 82 should just extend in the front-back direction L at least in the shape of a line or a dotted line. The longitudinal pressing part 82 may extend linearly in parallel to the front-rear direction L, or may extend in a curved manner inclined with respect to the front-rear direction L.

The pair of rear side compression parts 84 is provided on both sides of the center line CL in the rear side region S3. 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 are located on the rear side of the position P1 of the maximum width of the hip flap 4 in the width direction W. Preferably, the pair of rear side compressed parts 84 is located in the vicinity of the rear end part of the rear side area S3. Specifically, the pair of rear pressing parts 84 are located in the vicinity of the region facing the wearer's sacrum. The rear side compressed portion 84 may extend along the front-rear direction L in a line shape or a dotted line shape. In addition, even if it is slightly inclined or curved with respect to the front-rear direction L, it is considered that the rear compressed portion 84 extends along the front-rear direction L. Specifically, the pair of rear pressing parts 84 may extend along the front-rear direction L partially or entirely. A pair of rear side compression parts 84 have a wide section where the distance of the width direction W spreads toward the rear side. That is, the rear side compression part 84 inclines outside the width direction W as it goes to the rear side.

In the embodiment shown in FIG. 1, the pair of longitudinal pressing portions 82 are disposed away from the pair of rear pressing portions 84. The distance between the pair of longitudinal pressing parts 82 and the pair of rear pressing parts 84 is preferably at least 1 cm, more preferably at least 3 cm. The section between the pair of longitudinal pressing parts 82 and the pair of rear pressing parts 84 where the pressing part is not formed may straddle the position P1 of the maximum width of the hip flap.

A part of the absorbent core 31 provided in the rear side region S3 is arranged in a region sandwiched between wide sections. Moreover, it is preferable that a part of the front / rear slit 42 extends in a region sandwiched between wide sections. It is more preferable that the front / rear slit 42 penetrates this region along the front / rear direction L.

The absorptive article 1 is formed by compressing at least two of the sheets constituting the skin sheet 10 and the non-skin sheet 20 in the thickness direction T, and a first pressing part 85 and a second pressing part. 87 and a third pressing portion 86. The 1st pressing part 85, the 2nd pressing part 87, and the 3rd pressing part 86 are formed along the outer edge 4E of the hip flap 4 at least.

The first pressing part 85 is provided outside the absorbent core 31 in the width direction W of the absorbent article 1. The 1st pressing part 85 is formed inside virtual line IL obtained by connecting the collar part of each convex part 4F formed in outer edge 4E of hip flap 4 along virtual line IL ( (See FIG. 4). It is preferable that the 1st pressing part 85 is comprised from the several pressing part lined up discretely. It is more preferable that the first pressing unit 85 includes a plurality of point-like pressing units arranged along the virtual line IL. The plurality of point-like compressed parts may be provided according to each convex part 4F. The distance L1 between the first pressing portion 85 and the imaginary line IL is preferably 1 mm or more and 10 mm or less.

The pressing part is not formed in the area outside the virtual line IL. Furthermore, it is preferable that the plurality of sheets constituting the hip flap 4, for example, the side sheet 12 and the non-skin surface sheet 20, are not joined to each other in at least a part of the region outside the imaginary line IL.

The second pressing part 87 is provided outside the absorbent core 31 in the width direction W of the absorbent article 1. The second pressing part 87 is formed from a plurality of pressing parts that are discretely arranged along the outer edge 4 </ b> E of the hip flap 4 on the inner side of the first pressing part 85. It is preferable that the 2nd pressing part 87 is formed from several dotted | punctate pressing parts. The pitch of the plurality of second pressing parts 87 is smaller than the pitch of the plurality of first pressing parts 85.

The third pressing part 86 is provided outside the absorbent core 31 in the width direction W of the absorbent article 1. The third pressing part 86 is formed from a plurality of pressing parts arranged in a discrete manner between the first pressing part 85 and the second pressing part 87. It is preferable that the 3rd pressing part 86 is formed from several dotted | punctate pressing parts. The pitch of the plurality of third pressing parts 86 is smaller than the pitch of the plurality of first pressing parts 85 and larger than the pitch of the plurality of second pressing parts 87.

Each point-like pressing part which constitutes the 1st pressing part 85, the 2nd pressing part 87, and the 3rd pressing part 86 means a pressing part which has a slight breadth. It is preferable that the shape of the point-like compressed portion does not extend long along the virtual line IL. Specifically, the length in the direction along the imaginary line IL of each point-like compressed part may be substantially equal to or smaller than the length in the direction orthogonal to the imaginary line IL. For example, each dot-shaped pressing part may be circular or square. When the shape of each point-like pressing part is a circle, the diameter of each point-like pressing part is preferably 0.5 to 5.0 mm, more preferably 1.0 to 3.0 mm.

The 1st pressing part 85, the 2nd pressing part 87, and the 3rd pressing part 86 are the other through the rear end edge of the rear side area S3 from the outer edge 4E of one hip flap 4 along virtual line IL. It preferably extends to the outer edge of the hip flap 4.

When the absorbent article 1 is viewed from the skin surface side, the L * value in the L * a * b * color system of the region where the absorbent body 30 is provided, and the

compressed portions

85, 86, The difference from the L * value in the L * a * b * color system in the area inside 87 is preferably 15 or less. Further, the L * value in the L * a * b * color system of the hip flap 4 where the

compressed parts

85, 86, 87 are not formed, and the L * a * b * of the

compressed parts

85, 86, 87. The difference from the L * value in the color system is preferably 5 or more and 23 or less.

The L * value in the L * a * b * color system specified by the International Lighting Commission (Commission Internationale de l'Eclairage) is as follows using, for example, a color difference meter (CR-3000 manufactured by KONICA MINOLTA). Can be measured as follows. First, an absorptive article is put on a black sheet in the state where the non-skin sheet 20 of an absorptive article was turned down. Next, the L * value of the region to be measured is measured with a color difference meter from the skin sheet 10 side of the absorbent article.

(4) 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 facing surface 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 65 is peeled off 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 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 in front of the width slit 41 and straddling the central region S1 and the front region S2. The second main body adhesive region 62 is disposed in the rear region S3 on the rear side of the width slit 41. 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 width slit 41 and the front and rear slits 42 do not overlap all the adhesive regions 61 to 64 in the thickness direction T. In other words, the adhesive regions 61 to 64 are not provided in the region where the width slit 41 and the front and rear slits 42 are arranged in plan view. Further, the region sandwiched between the pair of rear pressing parts 84 may be disposed in a region that does not overlap with the adhesive regions 61 to 64.

The first pressing portion 85, the second pressing portion 87, and the third pressing portion 86 extend between the outer edge 4E of the hip flap 4 and the hip flap adhesive region 64. It is preferable that no adhesive region is provided outside the hip flap adhesive region 64 in the width direction W.

The distance between the imaginary line IL obtained by connecting the ridges of the convex portions 4F of the hip flap 4 and the hip flap adhesive region 64 is preferably 20 mm or less. Moreover, it is preferable that the adhesion area | region 64 is provided in the position P1 of the maximum width of the hip flap 4. As shown in FIG.

(5) Absorbent article being worn When the absorbent article 1 as a sanitary napkin is worn, the absorbent article 1 is fixed to the undergarment S. The central region S1 of the absorbent article 1 in a worn state is sandwiched between both legs of the wearer and receives a force directed 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 crotch region of the wearer, the central region S1 of the absorbent article is disposed so as to face. The absorbent article 1 is deformed so that the absorbent core in the central region S1 is pushed down by the bulge of the large labia and is raised on the non-skin facing surface side while being attached to the underwear S and being worn by the wearer. In the inseam of the wearer, the absorbent core in the central region S1 is arranged along the body, and leakage at the inseam can be suppressed.

Also, an anus and a fissure are located behind the perineum located behind the wearer's large labia. The cross-sectional shape of the body along the width direction near the back 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.

FIG. 5 is a cross-sectional view of the rear region S3 of the absorbent article in a state of being worn by the wearer. FIG. 5 corresponds to a cross section taken along line 5A-5A in FIG. In addition, in FIG. 5, the line which shows a wearer's body is shown with the dashed-two dotted line. For example, sanitary napkins for nighttime are often used in a sleeping posture on the back. Most body fluid leaks occur when a large amount of menstrual blood is discharged at a time and absorption of menstrual blood just below the vaginal opening is not in time, or an absorber located just below the vaginal opening fits the body. When there is no menstrual blood, the menstrual blood flows into a portion recessed from the buttocks, and the menstrual blood leaks along the body. If there is a gap between the body's buttocks and the absorbent article, menstrual blood may travel through the body to the back side and leak from behind the absorbent article.

In the absorbent article of the present embodiment, the side portion of the absorbent core 31 is pushed down by the left and right buttocks in the rear side region S3. Therefore, more force is applied to the side portion in the width direction of the absorption core in the rear side region than in the center in the width direction of the absorption core 31 in the rear side region. When the side portion of the absorbent core is pushed down by the left and right collars, the center in the width direction of the absorber in the rear side region rises toward the wearer with the front and rear slits 42 as vertices. In particular, a relatively front region of the rear region S3 protrudes toward the wearer with the front / rear slit 42 as an apex. Therefore, the center in the width direction of the absorbent core 31 in the rear side region S3 is easily disposed in the recess between the heel portions, and the absorbent core 31 can be fitted more along the wearer's buttock.

(6) Action / Effect According to one embodiment, the plurality of first and second

compressed parts

85, 87 arranged in a discrete manner are in the width direction W rather than the outer edge 31E of the absorbent core 31 in the rear region S3. The outer side of the hip flap 4 is provided along the outer edge of the hip flap 4. Further, the pitch of the plurality of second pressing parts 87 is smaller than the pitch of the plurality of first pressing parts 85. Since the 2nd pressing part 87 with a small pitch is formed inside the 1st pressing part 85, the feeling that the big hip flap 4 exists inside the 2nd pressing part 87 to a consumer. Can be given. Since the hip flap 4 is a part that abuts the wearer's buttocks, the wearer can be given a sense of security that body fluid leakage from the buttocks is likely to be prevented. On the other hand, the consumer can easily recognize the first compressed portion 85 having a large pitch as a frill of the absorbent article 1. Such frills give consumers the image that they are particularly soft, so they can give them a sense of security that they feel comfortable.

According to one embodiment, a plurality of third pressing parts 86 arranged in a discrete manner are provided between the plurality of first pressing parts 85 and the plurality of second pressing parts 87. Further, the pitch of the plurality of third pressing parts 86 is smaller than the pitch of the plurality of first pressing parts 85 and larger than the pitch of the plurality of second pressing parts 87.

This makes it possible to give the consumer an image that the outer edge of the hip flap 4, that is, the frill portion, is light like a race. Thereby, the absorbent article 1 can be shown neatly and a wearer's willingness to purchase can be improved.

According to one embodiment, when viewed from the skin facing surface side, the L * value in the L * a * b * color system of the region where the absorption core 31 of the rear side region S3 is provided, and the hip flap 4 The difference from the L * value in the L * a * b * color system in the region inside the second pressing portion 86 is 15 or less. The L * value represents the brightness. This makes it difficult for the consumer to visually distinguish the region of the absorbent core and the hip flap region in the rear side region, and feels that the region of the absorbent core in the rear side region and the region of the hip flap are integrated. As a result, the consumer feels at ease that the absorbent article is likely to envelop the buttock greatly.

Table 1 shows the results of measuring L * values for a plurality of different samples of the absorbent article of the above embodiment. The method for measuring the L * value is as described above. Although each sample is the same as that of the structure of the absorbent article demonstrated in said embodiment, the brightness of the area | region inside the 2nd pressing part 86 of the hip flap 4 differs mutually.

Here, the sensory evaluation 1 is an index as to whether or not the region where the absorption core is provided has a sense of unity with the region inside the second pressing portion 86 of the hip flap 4. Sensory evaluation 1 is the following evaluation.

For sensory evaluation 1, when there is no sense of unity, “X” is indicated. When there is a sense of unity rather than “×”, “△” is written. When there is a sense of unity more than “△”, “◯” is written. When there is a sense of unity more than “◯”, “◎” is written. The difference in L * values may be 15 or less, but it can be seen from Table 1 that it is preferably 11.8 or less. Further, the difference in L * value is more preferably 6.89 or less, and further preferably 1.43 or less.

According to one embodiment, a plurality of 1st and 2nd

pressing parts

85 and 87 are from the outer edge 4E of one hip flap 4 to the outer edge 4E of the other hip flap 4 via the rear end edge of rear side field S3. It extends. Thereby, it can be shown to the consumer that the region of the frills extends to the rear edge of the rear side region S3 of the absorbent article 1, and gives a sense of security that the comfort is likely to be good. it can.

According to one embodiment, the 1st pressing part 85 and the 2nd pressing part 87 are dot-like pressing parts. The portion where the point-like compressed portion is formed has higher transparency than the surrounding region (region where the compressed portion is not formed). Thereby, a region having higher transparency than the hip flap 4 is formed along the outer edge 4 </ b> E of the hip flap 4. This makes it easier for consumers to recognize that they have a frill-like decoration along the outer edge 4E of the hip flap 4. In this way, the absorbent article 1 can be clearly displayed to the consumer, and the consumer's willingness to purchase can be improved.

According to one embodiment, the outer edge 4E of the hip flap 4 is formed in a corrugated shape having a large number of convex portions 4F, and the plurality of first squeezed portions 85 connect the flange portions of the respective convex portions 4F. Are formed along the virtual line IL on the inner side of the virtual line IL obtained in (1). When a force is locally applied to the outer edge 4E of the hip flap 4 from the outside, a small number of convex portions 4F provided near the force application point are folded back. However, since a gap (concave portion) exists between the convex portions 4F, a force applied to a certain convex portion 4F is difficult to be transmitted to the adjacent convex portion 4F. As a result, the hip flap 4 is prevented from being greatly enlarged starting from the convex portion 4F to which a force is locally applied.

Furthermore, the rigidity of the area | region in which the 1st pressing part 85 provided inside the virtual line IL obtained by connecting the collar part of each convex part 4F was formed becomes high with the said 1st pressing part 85. FIG. ing. As a result, even if the convex portion 4F of the hip flap 4 is turned over, the convex portion 4F is easily returned to the original state due to the relatively high rigidity.

When the shape of each point pressing part is circular, the diameter of each point pressing part is preferably 0.5 to 5.0 mm, more preferably 1.0 to 3.0 mm. By making the diameter of each point pressing part 0.5 mm or more, the outer edge of the hip flap is easily broken at the point pressing part, and it is possible to suppress the hip flap from being largely bent. Moreover, the discomfort when a point-like pressing part touches skin can be reduced by making the diameter of each point-like pressing part 5.0 mm or less.

According to one embodiment, a plurality of 1st pressing parts 85 are provided according to each convex part 4F. By providing the 1st pressing part 85 corresponding to the convex part 4F of the hip flap 4, it can be made easy to return to the original state, even if any convex part 4F turns up.

According to one embodiment, when the absorbent article 1 is viewed from the skin facing surface side, the L * value in the L * a * b * color system of the area where the compressed portion of the hip flap 4 is not formed; The difference from the L * value in the L * a * b * color system of at least the first and second

pressing parts

85 and 87 is 5 or more and 23 or less. In this case, it is clearly recognized that the areas of the first and second

pressing parts

85 and 87 are different from the area where the pressing parts are not formed. This makes it easier for consumers to recognize that they have a frill-like decoration along the outer edge 4E of the hip flap 4. In this way, the absorbent article 1 can be clearly displayed to the consumer, and the consumer's willingness to purchase can be improved.

Table 2 shows the results of measuring L * values for a plurality of different samples of the absorbent article of the above embodiment. The method for measuring the L * value is as described above. Each sample has the same configuration as that of the absorbent article described in the above embodiment, but the brightness of the region where the compressed portion is not formed is different from each other.

Here, sensory evaluation 2 is an index indicating whether or not the areas of the first and second

pressing parts

85 and 87 can be clearly recognized as being different from the area where the pressing parts are not formed. Sensory evaluation 2 is the following evaluation.

For sensory evaluation 2, if a design such as a frill cannot be clearly recognized, “x” is written. When it can be recognized more clearly than “×”, “○” is written. When it can be recognized more clearly than “◯”, “◎” is written. The difference in L * values may be 5 or more, but it can be seen from Table 1 that it is preferably 8.12 or more. Further, the difference in the L * value is more preferably 12.08 or more, and further preferably 19.24 or more.

According to one embodiment, the imaginary line IL monotonously bulges outward in the width direction W from the front side toward the rear side in the region on the front side of the position P1 having the maximum width of the hip flap 4. Thereby, the width | variety of the hip flap 4 becomes large gradually gradually toward the back side from the front side in the area | region of the front side rather than the position P1 of the maximum width of the hip flap 4. As a result, wrinkles can be prevented from occurring in the hip flap 4. If the width of the hip flap 4 is increased or decreased in the region in front of the position P1 of the maximum width of the hip flap 4, the portion where the width of the hip flap 4 is narrow is reduced in the width direction W. Is likely to occur. Such a wrinkle tends to induce the folding of the convex portion 4F of the hip flap 4.

Furthermore, since the width of the hip flap 4 substantially increases until reaching the maximum width position P1 of the hip flap 4, it gives the wearer the impression that the entire outer edge of the hip flap flutters lightly like a race. it can. In this way, the absorbent article 1 can be clearly displayed to the consumer, and the consumer's willingness to purchase can be improved.

According to one embodiment, the width slit 41 extending along the width direction W of the absorbent article is provided between the absorbent core disposed in the central region S1 and the absorbent core disposed in the rear side region S3. Yes. The width slit 41 consists of a region where an absorbent material is not provided, or a region where an absorbent material having a lower basis weight than the absorbent core disposed in the central region S1 and the rear region S3 is provided. The boundary between the width slit 41 and the absorbent core in the central area S1 can be a deformation starting point of the absorbent article. Similarly, the boundary between the width slit 41 and the absorbent core in the rear side region S3 can be a deformation starting point of the absorbent article. By this width slit 41, the absorbent article 1 can be flexibly deformed along with the deformation of the buttocks when the bulge of the wearer's buttocks is crushed. Further, the width slit 41 is composed of a region where the absorbent material is not provided, or a region provided with the absorbent material having a lower basis weight than the absorbent core disposed in the central region S1 and the rear region S3. easy. When the collapsed portion of the wearer's buttocks moves to the crotch side, the deformation of the buttocks is absorbed by the width slit 41, and the area before and after the width slit 41 can be easily applied to the wearer. Furthermore, the width slit 41 can suppress the force applied to the absorption core in the central region S1 from propagating to the absorption core in the rear region S3.

According to one embodiment, the absorbent core disposed in the central region S1 is located on the inner side in the width direction with respect to the outer edge of the absorbent core, and has a middle-high portion 33 that is thicker than the thickness of the outer edge of the absorbent core. Preferably, the middle-high portion 33 is adjacent to the width slit 41. Thereby, the boundary between the width slit 41 and the absorption core in the central region S1 becomes easier to bend, and a clearer deformation starting point is formed. Therefore, it becomes easier to fit the absorbent article 1 to the wearer's body.

According to one embodiment, the absorbent core 31 disposed in the rear side region S3 has the front and rear slits 42 extending along the center line CL passing through the center of the absorbent article 1 in the width direction W. It consists of a region where an absorbent material is not provided, or a region where an absorbent material having a lower basis weight than the absorbent core 31 disposed in the rear side region S3 is provided. In the rear side region S3, the side portions of the absorbent core 31, that is, the absorbent cores on both sides across the front and rear slits 42 are pressed by the left and right collars. Accordingly, when the side portion of the absorbent core is pushed down by the left and right collars, the center in the width direction of the absorbent body in the rear side region S3 rises to the wearer side with the front and rear slits 42 as vertices. Therefore, the center in the width direction of the absorbent core 31 in the rear side region S3 can be easily disposed in the recess between the buttock portions, and the absorbent core 31 can be fitted along the wearer's buttock portion (see also FIG. 5). As a result, bodily fluids such as menstrual blood can be prevented from leaking from the back of the absorbent article by flowing along the back and flowing back to the back side.

According to one embodiment, the absorbent core disposed in the rear side region S3 further includes an auxiliary slit 43 that is continuous with the front and rear slits 42 and extends outward from the front and rear slits 42 in the width direction W. The edge is located on the inner side in the width direction W than the outer edge of the absorbent core in the rear region S3. The auxiliary slit 43 forms a deformation base point extending along the width direction W. The absorption core in the rear side region S3 can be deformed with the auxiliary slit 43 as a base point, and is easily fitted along the roundness along the front-rear direction of the body.

As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as 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 the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

Note that the entire content of Japanese Patent Application No. 2015-116113 filed on June 8, 2015 is incorporated herein by reference.

It is possible to provide an absorbent article that can give a wearer a sense of security that leakage of bodily fluid from the buttocks is likely to be prevented and a feeling that comfort is likely to be good.

1: Absorbent article 4: Hip flap 4E: Outer edge 4F of hip flap: Convex 10: Skin sheet 11: Top sheet 12: Side sheet 20: Non-skin sheet 30: Absorbent body 31: Absorbing core 31E: Outer edge 61: 1st main body adhesion area 62: 2nd main body adhesion area 63: Wing adhesion area 64: Hip flap adhesion area 85: 1st pressing part 86: 3rd pressing part 87: 2nd pressing part L: Front-back direction T: Thickness direction T1: Skin facing surface side T2: Non-skin facing surface side W: Width direction S1: Central region S2: Front side region S3: Rear side region CL: Center line IL: Virtual line

Claims

The front-rear direction and the width direction orthogonal to each other;
A central area located in the inseam of the wearer;
A rear side region located on the rear side of the central region;
Having at least an absorbent core disposed in the rear side region,
The rear side region is provided with a hip flap that swells outward in the width direction,
A plurality of first squeezing parts arranged discretely along the outer edge of the hip flap are provided on the outer side in the width direction than the outer edge of the absorbent core in the rear side region,
A plurality of second lines arranged discretely along the outer edge of the hip flap, on the outer side in the width direction than the outer edge of the absorbent core in the rear region, and on the inner side of the plurality of first compressed parts. There is a pressing part,
The pitch of the plurality of second pressing parts is smaller than the pitch of the plurality of first pressing parts,
Absorbent article.
Between the plurality of first pressing parts and the plurality of second pressing parts, a plurality of third pressing parts arranged in a discrete manner are provided,
The absorbent article according to claim 1, wherein a pitch of the plurality of third pressing parts is smaller than a pitch of the plurality of first pressing parts and larger than a pitch of the plurality of second pressing parts.
Covering the absorbent core on the skin facing surface side than the absorbent core, and having a skin sheet extending to the hip flap,
L * value in the L * a * b * color system of the region provided with the absorbent core in the rear region when viewed from the skin facing surface side, and the second compressed portion of the hip flap The absorbent article according to claim 1 or 2, wherein the difference from the L * value in the L * a * b * color system of the inner region is 15 or less.
The plurality of first and second compressed portions extend from an outer edge of one hip flap to an outer edge of the other hip flap through a rear end edge of the rear side region. Absorbent article according to item.
The absorbent article according to any one of claims 1 to 4, wherein the first pressing part and the second pressing part are point-like pressing parts.
The outer edge of the hip flap is formed in a corrugated shape having a large number of convex portions,
The absorptive article according to claim 5 in which said a plurality of 1st pressing parts are formed along said virtual line inside said virtual line obtained by connecting a collar part of each said convex part. .
The absorbent article according to claim 6, wherein the plurality of first compressed parts are provided according to each of the convex parts.
When the absorbent article is viewed from the skin facing surface side, the L * value in the L * a * b * color system of the area where the compressed portion of the hip flap is not formed, and the first and second The absorptive article according to any one of claims 1 to 7 whose difference with the L * value in the L * a * b * color system of said pressing part is 5 or more and 23 or less.
The absorbent article according to claim 6 or 7, wherein the imaginary line swells monotonously outward in the width direction from the front side to the rear side in a region on the front side of the position of the maximum width of the hip flap. .
The absorbent core is also disposed in the central area,
A width slit extending along the width direction of the absorbent article is provided between the absorbent core disposed in the central region and the absorbent core disposed in the rear side region, and the width slit is made of an absorbent material. The absorption according to any one of claims 1 to 9, comprising a region not provided, or a region provided with an absorbent material having a lower weight than an absorbent core disposed in the central region and the rear side region. Sex goods.
The absorbent core is also disposed in the central area,
The absorbent core disposed in the central region is located on the inner side in the width direction than the outer edge of the absorbent core, and has a middle-high portion thicker than the thickness of the outer edge of the absorbent core. The absorbent article of any one of Claims.
The absorbent core disposed in the rear region has front and rear slits extending along a center line passing through the center in the width direction of the absorbent article, and the front and rear slits are regions where no absorbent material is provided, or The absorptive article according to any one of claims 1 to 11 which consists of a field provided with an absorptive material with a lower basis weight than an absorptive core arranged in a back side field.
The absorption core disposed in the rear side region further includes an auxiliary slit that extends to the outer side in the width direction from the front and rear slits, and continues to the front and rear slits.
The absorbent article according to claim 12, wherein an outer edge of the auxiliary slit is positioned on an inner side in the width direction than an outer edge of the absorbent core in the rear side region.