TW201711656A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article with which curling of a hip flap can be improved. 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, and a rear-side region (S3) that is located to the rear side of the center region (S1). A hip flap (4) that bulges to the outside in the width direction W is provided in the rear-side region (S3), the outer edge (4E) of the hip flap (4) is formed in a corrugated shape having a multiplicity of protrusions (4F), and compression portions (85) are formed along an imaginary line (IL), which is obtained by joining the bases of the protrusions (4F), further to the inside than the imaginary line (IL).

Description

Absorbent article

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

For absorbent articles such as sanitary napkins, those having hip flaps are known. Patent Document 1 discloses a sanitary napkin having a buttock flap. The buttocks are formed on the part of the user's buttocks. The buttocks flaps largely protrude toward the outer side in the width direction of the absorbent article. There are two to five convex and concave curves along the outline of the buttocks. Further, embossing is formed along the outline of the buttocks flap. When the imaginary curve passing through the bottom of the concave curve is drawn, the embossing is also disposed in an area outside the imaginary curve.

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-144140

The edge of the buttocks of the absorbent article, sometimes along with Roll up with the user's movements. In particular, when there is a concave-convex curve at the edge of the buttocks flap, the edge of the buttock flap is easily rolled up. The user may feel uncomfortable when the edge of the buttocks is rolled up. Thus, it is desirable to improve the rolling up of such absorbent articles.

The present invention has been made in view of the above problems, and an object thereof is to provide an absorbent article capable of improving the rolling up of a buttock flap of an absorbent article.

The absorbent article of the present invention has a front-rear direction and a width direction orthogonal to each other, a central region disposed under the armpit of the user, and a rear region located on the rear side of the central region, and is disposed in the rear region. The buttocks flap that bulges outward in the width direction, the outer edge of the buttocks flap is formed into a wavy shape having a plurality of convex portions, and is more than an imaginary line obtained by connecting the crotch portions of the respective convex portions. On the inner side, a press section is formed along the aforementioned imaginary line.

1‧‧‧Absorbables

4‧‧‧Hip flaps

4E‧‧‧ outer edge of the hip flap

4F‧‧‧ convex

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧Side sheet

20‧‧‧Non-skin sheet

30‧‧‧Acceptor

31‧‧‧Absorbent core

31E‧‧‧ outer edge

61‧‧‧1st body adhesive area

62‧‧‧2nd body adhesion area

63‧‧‧wing adhesion area

64‧‧‧Hose flap adhesion area

85‧‧‧1st press section

86‧‧‧3rd press section

87‧‧‧2nd press section

L‧‧‧ direction

T‧‧‧ thickness direction

T1‧‧‧ skin facing side

T2‧‧‧ non-skin opposite side

W‧‧‧Width direction

S1‧‧‧Central Area

S2‧‧‧ front side area

S3‧‧‧ rear area

CL‧‧‧ center line

IL‧‧‧ imaginary line

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

Fig. 2 is a plan view of the absorbent article as viewed from the side opposite to Fig. 1.

Figure 3 is a cross-sectional view of the absorbent article taken along line 3A-3A of Figure 1.

Fig. 4 is a plan view showing a part of the buttocks flap enlarged.

Fig. 5 is a plan view showing an absorbent article according to another embodiment.

Figure 6 is the absorption shown in Figure 5 folded along the fold line in the front-rear direction. Top view of the item.

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

In the following description, the same or similar reference numerals are attached to the same or similar parts. However, the illustration is a pattern diagram, and it should be noted that the ratio of each size is different from the actual one. Therefore, the specific dimensions and the like should be judged by considering the following description. Further, the drawings may include portions having different dimensional relationships or ratios from each other.

(1) The overall composition of the absorbent article

Fig. 1 is a plan view of an absorbent article according to an embodiment. Fig. 2 is a plan view of the absorbent article as viewed from the side opposite to Fig. 1. Figure 3 is a cross-sectional view of the absorbent article taken along line 3A-3A of Figure 1.

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 user, a width direction W orthogonal to the front-rear direction L, and a skin facing surface from the user. The side T1 is in the thickness direction T extending toward the non-skin opposite side T2. When used, the skin facing side T1 corresponds to the side opposite to the user's skin. The non-skin contrast side T2 corresponds to the side opposite to the skin facing side T1.

The absorbent article 1 has a central area S1 and a front side area S2 And the rear side area S3. The central area S1 is located in an area that abuts the user's excretory opening (eg, the vaginal opening). In a state where the absorbent article is attached to the undergarment, the central region S1 is located in the region of the crotch of the undergarment. That is, the central area is placed under the arm of the user, that is, the area between the two feet of the wearer. The front side region S2 is located on the front side of the center region S1. The rear side region S3 is located further rearward than the central region S1. The length of the front-back direction L of the rear side region S3 may be longer than the length of the front-rear direction L of the central region S1.

The wing portion 3 to be described later can be provided in the center area S1. In this case, the central region S1 can also be said to be a region in which the wing portion 3 is provided in the front-rear direction L. Further, the hip flap 4 that bulges 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 side area S3. In this case, the front end edge of the width slit 41 may define the rear end edge of the central portion S1, and the rear end edge of the width slit 41 may define the front end edge of the rear side region S3.

The rear end edge of the rear side region S3 defines the rear end edge of the absorbent article 1. The boundary between the central region S1 and the front side region S2 corresponds to the front end edge of the wing portion 3. The front end edge of the wing portion 3 is a root portion of the wing portion 3, which is located at a portion on the front side among the two portions recessed in the innermost side in the width direction W of the wing portion 3. The root of the front side of the wing portion 3 may also be located at the boundary between the central region S1 and the front side region S2. The front end edge of the front side region S2 defines the front end edge of the absorbent article 1.

The absorbent article 1 has a skin sheet 10, a non-skin surface Sheet 20 and absorber 30. The skin surface sheet 10 is provided on the skin facing surface side T1 of the absorbent body 30. The non-skin surface sheet 20 is provided on the non-skin opposing surface side T2 of the absorber 30. The absorbent body 30 is disposed between the skin surface sheet 10 and the non-skin surface sheet 20.

The skin dough sheet 10 may have a surface sheet 11 and a side sheet 12. The surface sheet 11 is a liquid permeable sheet that allows a liquid such as a body fluid to permeate. The surface sheet 11 covers at least the center of the absorbent body 30 in the width direction W. The surface sheet 11 can extend from the front side region S2 to the rear side region S3 in the front-rear direction L. The side sheet 12 covers the outer edge (outer end portion in the width direction W) of the surface sheet 11 and extends outward in the width direction W from the surface sheet 11. Further, in the present embodiment, the absorbent article 1 has the side sheet 12, but the absorbent article 1 may not have the side sheet 12. In this case, the surface sheet 11 can cover the entire absorbent body 30.

The surface sheet 11 is composed of a non-woven fabric, a woven fabric, a perforated plastic sheet, a mesh sheet, or the like, and has any sheet-like material having a structure for allowing liquid to permeate. Weaving or non-woven materials can be used for both natural and chemical fibers.

The side sheets 12 can be selected from the same material as the surface sheets 11. However, in order to prevent the body fluid from flowing out of the outer side of the absorbent article 1 beyond the side sheet 12, it is preferable that the side sheet 12 has hydrophobicity or water repellency. The side sheet 12 is disposed on the outer edge of the absorber 30, the wing portion 3, and the buttocks flap 4.

The non-skin facial sheet 20 is a liquid-impermeable sheet. The non-skin facial sheet 20 can be laminated using a polyethylene sheet, polypropylene, or the like as a main body. A non-woven fabric, a breathable resin film, a sheet in which a breathable resin film is bonded to a nonwoven fabric such as a spunbond or a high water spray network.

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 can be formed, for example, from hydrophilic fibers, pulp, and SAP.

The absorbent core 31 is disposed at least in the central region S1 and the rear side region S3. Further, the absorbent core 31 may be disposed individually 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. Also, 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 of the outer edge 31E of the absorbent core 31. The thickness of the middle portion 33 of the absorbent core is thicker than the thickness of the absorbent core around the mid-high portion 33. The middle portion 33 can be located in the central area S1. The basis weight of the absorbent material of the middle portion 33 may also be higher than the basis weight of the absorbent material of the outer edge 31E of the absorbent core 31 located at the central portion S1. The middle portion 33 may also be located on the rear side in the central region S1 and adjacent to the width slit 41.

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

The wing portion 3 can have a side sheet 12 and a non-skin sheet 30. The center of the front and rear direction L of the wing portion 3 faces the drain opening of the user. The wing portion 3 is configured to be foldable toward the non-skin surface sheet 20 side. The wing portion 3 is folded back toward the non-skin opposing side of the crotch portion of the undergarment at the time of use.

The buttocks flap 4 is located on the rear side of the wing portion 3 and is disposed in the rear side region S3. The hip flap 4 does not fold back during use and is disposed between the undergarment and the wearer's buttocks. In the present embodiment, the hip pad 4 is not provided with an absorbing material. Instead, an absorbent material can be provided on the buttocks flap 4.

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

In the region on the front side of the position P1 of the maximum width of the buttocks flap 4, the width of the buttocks flap 4 in the width direction W of the absorbent article 1 can be substantially increased from the front side to the rear side. Specifically, it is not necessary to consider the shape of the convex portion 4F of the outer edge 4E of the buttocks flap, and the entire shape of the buttocks flap 4 is along the region on the front side of the position P1 of the maximum width of the buttocks flap 4 It is better to increase from the front side to the back side. More specifically, in a region on the front side of the position P1 of the maximum width of the buttocks 4, the imaginary line IL formed by the crotch portion of each convex portion 4F formed on the outer edge 4E of the buttocks 4 is connected. It may swell monotonously toward the outer side in the width direction W from the front side to the rear side.

Further, in the region on the rear side of the position P1 of the maximum width of the buttocks flap 4, the width of the buttocks flap 4 in the width direction W of the absorbent article 1 can be substantially reduced from the front side to the rear side. Instead of this, in the region on the rear side of the adhesive region 64 to be described later, the width of the buttocks flap 4 in the width direction W of the absorbent article 1 can be substantially reduced from the front side to the rear side. Specifically, it is not necessary to consider the shape of the convex portion 4F of the outer edge 4E of the buttocks flap. In the region on the rear side of the adhesive region 64, the overall shape of the buttocks flap 4 can be monotonously adjusted from the front side to the rear side. Narrowed. More specifically, in the region on the rear side of the adhesive region 64, the imaginary line IL formed by the crotch portion of each convex portion 4F formed on the outer edge 4E of the buttocks flap 4 is connected from the front side to the rear side. The inside of the width direction W is monotonously narrowed. Further, the position P1 of the maximum width of the buttocks flap is located further rearward than the center of the rear side region S3 of the front-rear direction L.

The hip flap 4 can have a side panel 12 and a non-skin panel 20. Alternatively, the hip flap 4 may not have the side flaps 12. In this case, it suffices that the surface sheet 11 extends to the region of the buttocks flap 4. In this case, a region in which a plurality of convex portions 4F are formed can be formed by the same number of sheets.

(2) the gap of the absorbent core

The absorbent core 31 may have a width slit 41, a front and rear slits 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.

Width slit 41, front and rear slits 42 and auxiliary slits 43 The basis weight of the absorbent material is lower than the basis weight of the absorbent material of the absorbent core 31 around the slits 41, 42, 43. Further, 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 absorbing material is 0, that is, a region where the absorbing material is not provided.

The width slit 41, the front and rear slits 42, and the auxiliary slit 43 become boundaries at which the rigidity of the absorbent article 1 changes. For example, the rigidity of the region on the front side of the width slit 41 may be different from the rigidity of the region on the rear side of the width slit 41. In more detail, the basis weight of the absorbing material in the region on the front side of the width slit 41 can be higher than the basis weight of the absorbing material in the width slit 41. Further, the basis weight of the absorbing material in the region on the rear side of the width slit 41 may be higher than the basis weight of the absorbing material in the width slit 41.

The width slit 41 is interposed between the central region S1 and the rear side region S3 and extends in the width direction W. The width slit 41 may be extended at least in the width direction W. The width slit 41 may extend parallel to the width direction W and linearly, or may be inclined to the width direction W and linearly or curvedly.

The width slit 41 of the present embodiment has a curved shape in which the center of the width direction W of the width slit 41 protrudes rearward. In more detail, the center of the width direction W of the width slit 41 is located further rearward than the outer edge of the width slit 41. The length of the front-back direction L of the width slit 41 may be fixed or may be changed. The length of the width gap 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, in the position passing through the center line CL at the center of the width direction W of the absorbent article. Thereby, the absorber 30 is in the width gap The 41 is easily bent along the user's skin, and the absorbent body 30 can be applied to the user's skin.

The length of the width slit 41 in the width direction is preferably 25 mm or more. Thereby, the operation of the central region S1 of the absorbent article 1 can be suppressed 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 direction W of the width slit 41 is located at the outer edge 31E of the absorbent core 31. Thereby, the absorbent core 31 of the central region S1 is separated from the absorbent core 31 of the rear side region S3 by the width slit 41. Instead, the width slit 41 may extend across the center line CL and partially toward the width direction W of the absorbent core 31.

In the rear side region S3, the front and rear slits 42 extend in the front-rear direction L along the center line CL of the absorbent article. The front and rear slits 42 may extend in parallel and linearly in the front-rear direction L, or may extend obliquely to the front-rear direction L and linearly or curvedly along the center line CL.

The front and rear slits 42 may be formed in the entire area of the front-rear direction L of the absorbent core 31 of the rear side region S3. Alternatively, the front and rear slits 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 end edge of the front and rear slits 42 is preferably located from the center of the front and rear direction L of the wing portion 3, and is preferably at a distance of 30 mm or more. The rear end edge of the front and rear slits 42 is preferably located from the center of the front and rear direction L of the wing portion 3, and is preferably 200 mm or more rearward. The length of the front and rear direction L of the front and rear slits 42 is preferably 150 mm or more. In the section along the front-rear direction L of the user's body, the groove (hip seam) between the buttocks exists later than the perineum The area from the side to the tailbone. The front and rear slits 42 are such that the absorber 30 is easily deformed to form a convex shape in the front and rear slits. That is, the absorber 30 is easily deformed into a groove that fits between the buttocks.

Preferably, the length of the front and rear slits 42 in the width direction W is 1 mm or more and 15 mm or less. Thereby, the absorber 30 can be easily deformed into a groove that fits between the buttocks.

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

The auxiliary slit 43 is connected to the front and rear slits 42 and extends outward from the front and rear slits 42 in the width direction W. The auxiliary slit 43 may be extended at least in the width direction W. The auxiliary slits 43 may be formed in parallel and linearly in the width direction W, or may be formed obliquely and linearly or curvedly in the width direction W. The auxiliary slit 43 is preferably inclined toward the front side from the inner side to the outer side in the width direction W. The auxiliary slits 43 respectively extend toward both sides in the width direction W of the front and rear slits 42. The auxiliary slits 43 are provided in plural in the front-rear direction L with an interval therebetween.

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

The auxiliary slit 43 constitutes the absorber 30 of the rear side region S3 at A deformation base point in which the thickness direction T is curved. That is, the absorbent article 1 is easily bent at the auxiliary slit 43. Thereby, when the absorbent article 1 is attached to a user, the absorber 30 becomes more easily attached to the curved buttocks of the user.

(3) Press section

The absorbent article 1 has a press portion which is formed by pressing at least the absorbent core 31 in the thickness direction T. The press portion may have a front side press portion 81, an elongated press portion 82, and a pair of rear side press portions 84.

The front side press portion 81 is provided in the center area S1 and the front side area S2. The front side press portion 81 can be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction T. The front side press portion 81 has a portion along the front-rear direction L provided on both sides in the width direction W of the middle-high portion 33. The front side press portion 81 can define side edges on both sides in the width direction W of the middle and high portions 33.

The front side press portion 81 is bent in the width direction in the vicinity of the front end edge of the absorbent core 31, and is continuously connected in a U shape. Instead of this, the front side press portion 81 may be separately provided on both sides in the width direction W of the middle portion 33. That is, the pair of front side press sections 81 can be individually provided by being separated from each other.

The elongated press portion 82 is attached to the rear side region S3 and is disposed on both sides with the center line CL interposed therebetween. The elongated press portion 82 may be formed on the front side of the position P1 which is the maximum width of the buttocks flap 4. The elongated press portion 82 can be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction. Long pressure The press portion 82 extends in the front-rear direction L on both outer sides in the width direction W of the auxiliary slit 43. The elongated press portion 82 may extend in at least the front-rear direction L as long as it is linear or dotted. The elongate press portion 82 may extend in parallel and linearly in the front-rear direction L, or may be inclined and curved in the front-rear direction L.

A pair of rear side press portions 84 are attached to the rear side region S3, and are disposed on both sides with the center line CL interposed therebetween. The rear side press portion 84 can be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction. The pair of rear side press portions 84 are disposed apart from each other with a center line CL passing through the center of the width direction W of the absorbent article. The pair of rear side press portions 84 are located further rearward than the position P1 of the maximum width of the buttocks flaps 4 in the width direction W. Preferably, the pair of rear side press portions 84 are located in the vicinity of the rear end portion of the rear side region S3. Specifically, a pair of rear side press sections 84 are located beside the area facing the sac of the user. The rear side press portion 84 may extend in a line shape or a dotted line along the front-rear direction L. Further, it is possible to incline or bend somewhat in the front-rear direction L, and the rear side press portion 84 is considered to extend in the front-rear direction L. Specifically, the pair of rear side press portions 84 may extend partially or collectively in the front-rear direction L. The pair of rear side press portions 84 have a wide interval in which the distance in the width direction W is wider as the back side is wider. That is, the rear side press portion 84 is inclined toward the outer side in the width direction W as it goes toward the rear side.

In the embodiment shown in Fig. 1, the pair of elongated press sections 82 are arranged to be separated from the pair of rear press sections 84. The distance between the pair of elongated press sections 82 and the pair of rear side press sections 84 is preferably at least 1 cm, more preferably at least 3 cm. A pair of elongated press sections 82 and a pair of rear side press sections 84 The interval between the portions where the press portion is not formed may span the position P1 of the maximum width of the buttocks flap.

A part of the absorbent core 31 provided in the rear side region S3 is disposed in a region sandwiched by the wide section. Further, a part of the front and rear slits 42 is preferably extended in a region sandwiched by the wide section. The front and rear slits 42 are preferably penetrated through the region in the front-rear direction L.

The absorbent article 1 has a first press portion 85, a second press portion 87, and a third press portion 86, and at least two of the sheets constituting the skin surface sheet 10 and the non-skin surface sheet 20 are The thickness direction T is formed by compression. The first press portion 85, the second press portion 87, and the third press portion 86 are formed at least along the outer edge 4E of the buttocks flap 4.

The first press portion 85 is provided in the width direction W of the absorbent article 1 and is disposed outside the absorbent core 31. The first press portion 85 is formed inside the imaginary line IL which is connected to the mountain portion of each convex portion 4F formed on the outer edge 4E of the buttocks 4, and is formed along the imaginary line IL (see FIG. 4). The first press portion 85 is preferably constituted by a plurality of press portions that are discretely arranged in parallel. The first press portion 85 is preferably constituted by a plurality of dot press portions that are arranged along the imaginary line IL. The plurality of point press portions can be provided in cooperation with the respective convex portions 4F. The distance L1 between the first press portion 85 and the imaginary line IL is preferably 1 mm or more and 10 mm or less.

A press portion is not formed in a region outside the imaginary line IL. Further, the plurality of sheets constituting the buttocks flap 4, for example, the side sheet 12 and the non-skin sheet 20, are preferably not joined to each other in at least a portion of the region outside the imaginary line IL.

In the width direction W of the absorbent article 1, the second press portion 87 is provided outside the absorbent core 31. The second press portion 87 is formed inside the outer edge 4E of the buttocks flap 4 by a plurality of press portions that are discretely arranged side by side on the inner side than the first press portion 85. The second press portion 87 is preferably formed of a plurality of dot press portions. The pitch of the plurality of second press portions 87 is smaller than the pitch of the plurality of first press portions 85.

In the width direction W of the absorbent article 1, the third press portion 86 is provided outside the absorbent core 31. Between the first press portion 85 and the second press portion 87, the third press portion 86 is formed by a plurality of press portions that are discretely arranged in parallel. The third press portion 86 is preferably formed of a plurality of point press portions. The pitch of the plurality of third press sections 86 is smaller than the pitch of the plurality of first press sections 85, and is larger than the pitch of the plurality of second press sections 87.

Each of the dot press portions constituting the first press portion 85, the second press portion 87, and the third press portion 86 is a press portion having a slight enlargement. It is preferable that the shape of the point press portion does not extend too long along the imaginary line IL. Specifically, the length of each of the punctiating press portions along the imaginary line IL may be substantially equal to or shorter than the length in the direction orthogonal to the imaginary line IL. For example, each of the dot press portions is preferably a circular shape or a square shape. In the case where the shape of each of the punctiating press portions is circular, the diameter of each of the punctiating press portions is preferably 0.5 to 5.0 mm, more preferably 1.0 to 3.0 mm.

The first press portion 85, the second press portion 87, and the third press portion 86 extend along the imaginary line IL from the outer edge 4E of one of the buttocks flaps 4 to the rear end edge of the rear side region S3 to the other hip flap. The outer edge of the sheet 4 is preferred.

When the absorbent article 1 is viewed from the skin surface side, the L* value of the L*a*b* color system in the region where the absorbent body 30 is provided is higher than the pressure portion 85, 86, 87 of the buttocks flap 4 The difference between the L* values of the L*a*b* color system in the inner region is preferably 15 or less. Further, the L* value of the L*a*b* color system of the region of the buttocks flap 4 where the press portions 85, 86, and 87 are not formed, and the L*a*b* table of the press portions 85, 86, and 87 are shown. The difference in the L* value of the color system is preferably 5 or more and 23 or less.

The L* value of the L*a*b* color system specified by the Commission Internationale de l'Eclairage can be measured, for example, by using a color difference meter (CR-3000 manufactured by KONICA MINOLTA Co., Ltd.). First, the absorbent article is placed on the black sheet in a state in which the non-skin sheet 20 of the absorbent article is placed in the lower state. Next, the L* value of the region to be measured is measured from the skin surface sheet 10 side of the absorbent article by a color difference meter.

(4) Adhesive area

As shown in Fig. 2, the absorbent article 1 has a first main body adhesive region 61 provided with an adhesive for fixing the absorbent article 1 to the undergarment S, a second main body adhesive region 62, a wing adhesive region 63, and a hip flap. The sheet is adhered to the area 64. These adhesive areas 61 to 64 are provided on the non-skin contrast surface of the non-skin surface sheet 20. In the state before use, the adhesive regions 61 to 64 can be covered by the release sheet. The release sheet is used to prevent deterioration of the adhesive in the adhesive regions 61 to 64 before use. The release sheet 65 is peeled off by the user at the time of use.

The first main body adhesion region 61 is disposed further forward than the second main body adhesion region 62. The first main body adhesion region 61 is disposed to be separated from the second main body adhesion region 62 in the front-rear direction L. The first main body adhesion region 61 may be disposed to straddle the central region S1 and the front side region S2 on the front side of the width slit 41. The second main body adhesion region 62 is disposed on the rear side of the width slit 41 and is disposed in the rear side region S3. The wing adhesion region 63 is provided at the wing portion 3. The hip flap attachment area 64 is disposed on the hip flap 4.

The width slit 41 and the front and rear slits 42 do not overlap all of the adhesive regions 61 to 64 in the thickness direction T. In other words, in the region in which the width slit 41 and the front and rear slits 42 are disposed, the adhesive regions 61 to 64 are not provided in plan view. Further, the region sandwiched by the pair of rear side press portions 84 can be disposed in a region that is not overlapped with the adhesive regions 61 to 64.

The first press portion 85, the second press portion 87, and the third press portion 86 extend between the outer edge 4E of the buttocks flap 4 and the buttocks flap adhesion region 64. It is preferable that the adhesive region is not provided on the outer side in the width direction W of the buttocks flap adhesion region 64.

The distance between the imaginary line IL and the buttocks-adhesive region 64 obtained by connecting the crotch portion of the convex portion 4F of the buttocks 4 is preferably 20 mm or less. Further, it is preferable that the adhesive region 64 is provided at the position P1 of the maximum width of the buttocks flap 4.

(5) Other embodiments

Fig. 5 is a plan view showing an absorbent article according to another embodiment. Hereinafter, the same configuration as that shown in FIG. 1 will be omitted. And, The same components as those shown in Fig. 1 are denoted by the same reference numerals.

In the embodiment shown in Fig. 5, the absorbent article 1A has a pair of fold lines F1 along the front-rear direction L. The fold line F1 is used for the folding line for packaging the absorbent article 1A. Fig. 6 shows an absorbent article 1A folded by a pair of fold lines F1. In the embodiment shown in Fig. 5, the plurality of convex portions 4F formed on the outer edge 4E of the buttocks flap 4 are provided outside the fold line F1 in the width direction W. Accordingly, the first press portion 85, the second press portion 87, and the third press portion 86 are also disposed outside the fold line F1 in the width direction W. In the present embodiment, at least a region in which a plurality of convex portions 4F are formed is preferably constituted by the same number of sheets.

Further, the absorbent article 1A is not only folded by a pair of fold lines F1 along the front-rear direction L, but may be further folded by a fold line along the width direction W.

(6) Function and effect

According to one embodiment, the first press portion 85 is formed inside the imaginary line IL which is connected to the crotch portion of the convex portion 4F formed on the outer edge of the buttocks 4, and is formed along the imaginary line IL.

When a force is locally applied to the outer edge 4E of the buttocks flap 4 from the outside, a small number of convex portions 4F provided near the point of application of the force are folded back. However, since the convex portions 4F have a gap (concave portion) therebetween, the force applied to the certain convex portion 4F is hard to be transmitted to the adjacent convex portions 4F. As a result, it is possible to suppress the fact that the buttocks flap 4 is largely rolled up with the convex portion 4F to which the force is locally applied as a starting point.

In addition, the rigidity of the region in which the first press portion 85 is provided inside the imaginary line IL which is connected to the ridge line IL of the respective convex portions 4F is formed, and the first press portion 85 is increased. As a result, even if the convex portion 4F of the buttocks flap 4 is wound up, the convex portion 4F is easily restored to the original state due to the high rigidity.

According to one embodiment, the first press portion 85 is a plurality of dot press portions that are arranged along the imaginary line IL. When a force is locally applied to the outer edge of the buttocks flap 4 from the outside, this force is also applied to the point press section. Here, when the first press portion 85 is not formed in a line shape and formed in a dot shape, there is an advantage that the force applied to the spot press portion is hard to be transmitted to the adjacent spot press portion. Since it is difficult for the force to be transmitted to the adjacent point press portion, even if a part of the buttocks flap 4 is locally applied with force, the case where the buttocks flap 4 is fully rolled up can be further suppressed.

When the shape of each of the punctiating press portions is circular, the diameter of each of the punctiating press portions is preferably 0.5 to 5.0 mm, more preferably 1.0 to 3.0 mm. By setting the diameter of each of the punctiform press portions to 0.5 mm or more, the outer edge of the buttocks flap is easily bent at the point press portion, and the entire hip flap can be suppressed from being largely bent. Further, by setting the diameter of each of the punctiating press portions to 5.0 mm or less, it is possible to reduce the uncomfortable feeling when the point press portion contacts the skin.

According to one embodiment, the plurality of dot press portions constituting the first press portion 85 are provided to match the respective convex portions 4F. In this way, by providing the dot-shaped press portion corresponding to the convex portion 4F of the buttocks flap 4, even if any of the convex portions 4F is rolled up, the original state can be easily restored.

According to one embodiment, a plurality of convex portions 4F are from one hip The outer edge 4E of the side flap 4 extends to the outer edge 4E of the other buttock flap 4 through the rear end edge of the rear side region S3. Further, the first press portion 85 extends along the imaginary line IL from the outer edge 4E of one of the buttocks fins 4 to the outer edge 4E of the other buttocks flap 4 through the rear end edge of the rear side region S3. Thereby, not only the outer edge 4E of the buttocks flap 4 but also the rear end edge of the rear side region S3 can suppress the rollup of the absorbent article 1, and the rolled up convex portion 4F can be easily restored to the original state.

In one embodiment, the press portion is not formed in a region outside the imaginary line IL. Thereby, the rigidity of the outer edge region outside the imaginary line IL can be made small. Thereby, the outer edge 4E of the buttocks flap 4 can be made soft, and the stimulation against the user's skin can be reduced.

In one embodiment, the buttocks flap 4 includes a plurality of sheets (e.g., side sheets 12 and non-skin sheets 20). Further, the plurality of sheets are not joined to each other in at least a portion of the region outside the imaginary line IL. Thereby, the rigidity of the portion where the plurality of sheets are joined to each other is compared, and the rigidity of the region outside the outer edge of the imaginary line IL can be made small. As a result, the convex portion 4F becomes difficult to fold back and the stimulation against the skin of the user can be reduced.

In one embodiment, the region in which the plurality of convex portions 4F are formed is formed by the same number of sheets. If there are portions composed of sheets having different numbers of sheets, the absorbent article 1 is easily folded back along the boundary of the sheets. In one embodiment, since the region in which the plurality of convex portions 4F are formed is formed by the same number of sheets, it is possible to suppress the sheet from being easily folded back in the region.

In the embodiment, the virtual line IL is monotonously bulged toward the outer side in the width direction W from the front side to the rear side in a region on the front side of the position P1 of the maximum width of the buttocks fins 4. Thereby, in the region on the front side of the position P1 of the maximum width of the buttocks 4, the width of the buttocks 4 is substantially gradually increased from the front side to the rear side. As a result, the buttocks flap 4 can suppress wrinkles. If the width of the buttocks flap 4 is increased or decreased in a region on the front side of the position P1 of the maximum width of the buttocks flap 4, the narrow portion of the buttocks flap 4 is likely to wrinkle in the width direction W. Such wrinkles easily induce bending of the convex portion 4F of the buttocks flap 4.

In one embodiment, the buttocks flap 4 has a non-skin surface sheet 20 that is provided on the non-skin opposing surface side, and an adhesive area 64 that is provided on the non-skin opposing surface of the non-skin surface sheet 20. Further, the first press portion 85 extends between the outer edge 4E of the buttocks flap 4 and the adhesive region 64. The adhesive area 64 suppresses the curling of the buttocks flap 4. In particular, the adhesive region 64 is fixed to the undergarment in the region of the buttocks flap 4 on the inner side of the first press portion 85, and the first press portion 85 can be assisted in returning the folded convex portion 4F to the original state. Features.

In one embodiment, the adhesive region 64 is disposed on the buttocks flap 4. Thereby, the adhesion region 64 is disposed at a position closer to the imaginary line IL obtained by connecting the crotch portion of the convex portion 4F of the buttocks flap 4 . As a result, the outer edge of the buttocks flap 4 is suppressed from being largely wound up.

In one embodiment, the adhesive region 64 is disposed at a position P1 of the maximum width of the buttocks flap 4. Position of the maximum width of the hip flap P1 It extends to the outermost area and is easily bent in use. By providing the adhesive region 64 at the position P1 of the maximum width of the buttocks flap, it is possible to prevent the hip flap 4 from being largely bent.

In the embodiment, the imaginary line IL is monotonously narrowed toward the inner side in the width direction W from the front side to the rear side in a region on the rear side of the adhesive region 64. Thereby, in the region on the rear side of the adhesive region 64, the width of the buttocks flap 4 gradually becomes smaller as it goes from the front side to the rear side. The width of the region of the buttocks flap 4 that is closer to the rear side than the portion fixed by the adhesive region 64 is reduced, and the large portion of the rear portion of the buttocks flap 4 can be suppressed from being largely folded back.

In one embodiment, the convex portion 4F is provided outside the fold line F1 in the width direction W. Since the fold line F1 does not overlap with the convex portion 4F of the buttock flap 4, the habit of forming the bend at the convex portion 4F can be prevented.

The present invention has been described in detail above using the embodiments of the present invention, but those skilled in the art should understand that the present invention is not limited to the embodiments described in the specification. The present invention can be modified and modified as long as it does not deviate from the scope and scope of the invention as set forth in the appended claims. 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. 2015-116106, filed on Jun. 8, 2015, are incorporated herein by reference.

[Industrial Applicability]

A rolled absorbent article that improves the buttocks flap of the absorbent article is provided.

1‧‧‧Absorbables

3‧‧‧ wing

4‧‧‧Hip flaps

4E‧‧‧ outer edge of the hip flap

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧Side sheet

30‧‧‧Acceptor

31E‧‧‧ outer edge

33‧‧‧High and Medium Department

41‧‧‧width gap

42‧‧‧ front and back gap

43‧‧‧Auxiliary gap

81‧‧‧Front side press section

82‧‧‧Long press section

84‧‧‧Back side press section

85‧‧‧1st press section

86‧‧‧3rd press section

87‧‧‧2nd press section

CL‧‧‧ center line

L‧‧‧ direction

W‧‧‧Width direction

S1‧‧‧Central Area

S2‧‧‧ front side area

S3‧‧‧ rear area

P1‧‧‧Maximum width position

Claims (13)

An absorbent article comprising: a front-rear direction and a width direction orthogonal to each other, a central region disposed under the armpit of the user, and a rear region located at a rear side of the central region, wherein the rear region is provided toward the front side The buttocks flap that bulges outward in the width direction, the outer edge of the buttocks flap is formed in a wavy shape having a plurality of convex portions, and is located on the inner side of the imaginary line obtained by connecting the crotch portion of each of the convex portions. The imaginary line is formed with a press portion. The absorbent article according to claim 1, wherein the press portion is a plurality of dot press portions which are arranged along the imaginary line. The absorbent article of claim 2, wherein the plurality of point press portions are provided in cooperation with the respective convex portions. The absorbent article according to any one of claims 1 to 3, wherein the plurality of convex portions extend from an outer edge of one of the buttocks flaps through a rear end edge of the rear side region to an outer edge of the other buttocks flap The press portion extends along the imaginary line from the outer edge of one of the buttocks fins to the outer edge of the other buttocks flap through the rear end edge of the rear side region. The absorbent article according to any one of claims 1 to 3, wherein the press portion is not formed in a region outside the imaginary line. The absorbent article of any one of claims 1 to 3, wherein the abutment flap comprises a plurality of sheets, The plurality of sheets are not joined to each other at least a portion of a region outside the imaginary line. The absorbent article according to any one of claims 1 to 3, wherein the buttock flap comprises a plurality of sheets, and the region in which the plurality of projections are formed is formed by the same number of sheets. The absorbent article according to any one of claims 1 to 3, wherein the imaginary line is in a direction from the front side to the rear side in the width direction in a region on the front side of the position of the maximum width of the hip pad The outside bulges monotonously. The absorbent article according to any one of claims 1 to 3, wherein the buttocks flap has a non-skin surface sheet disposed on a non-skin facing surface side and a non-skin orientation disposed on the non-skin surface sheet In the adhesive region of the surface, the press portion extends between the outer edge of the buttock flap and the adhesive region. The absorbent article of claim 9, wherein the adhesive region is provided on the hip flap. The absorbent article of claim 9, wherein the adhesive region is disposed at a position of a maximum width of the hip pad. The absorbent article according to claim 11, wherein the imaginary line is monotonously narrowed inward in the width direction from the front side to the rear side in a region on the rear side of the adhesive region. The absorbent article of any one of claims 1 to 3, wherein The fold line along the front-rear direction for folding the absorbent article is provided, and the convex portion is provided on the outer side in the width direction of the fold line.