KR20180016489A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article capable of alleviating irritation to the skin near the sacrum. The absorbent article 1 has a central region S1 disposed under the crotch of the wearer and a rear region S3 having a longer length in the forward and backward directions L than the central region S1 and a rear region S3 extending at least in the rear region S3 The absorbent core 31 having the absorbent core 31 disposed thereon is provided with a hip flap 4 bulging outward in the width direction W and at least the absorbent core 31 is pressed against the center line CL, And a maximum width of the hip flap 4 is set to be larger than the maximum width of the front flap 4 in the forward and backward directions L The pair of rear pressing portions 84 are located on the rear side of the position P1 of the maximum width of the hip flap 4 and are located on the rear side of the pair of rear side portions S3, The crimping portion 84 has a wide section in which the distance in the width direction W is widened toward the rear side.

Description

Absorbent article

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

Absorbent articles such as sanitary napkins, panty liners, urinary incontinence pads and the like for absorbing menstrual discharge and secretions are known. Particularly, the sanitary napkin of the absorbent article is closely attached to the body of the wearer by the underwear, and is put on the body of the wearer. Patent Document 1 discloses an absorbent article such as a sanitary napkin, a panty liner, and a urinary incontinence pad for absorbing menstrual discharge and secretions. The absorbent article has a topsheet, a backsheet, and an absorbent body. The absorber is provided between the topsheet and the backsheet. The absorbent article has an embossed pattern in which at least the topsheet and the absorbent article are compressed. The emboss pattern is formed to control the bending of the absorbent article, particularly the absorbent body, when worn. In Patent Document 1, an embossed pattern is formed so as to fit firmly in the groove (dull heat) of the buttocks and to fit in correspondence to the pressing of the buttocks at the time of sleeping.

Patent Document 1: JP-A-2011-156070

The inventor of the present application has found the following problem with respect to an absorbent article such as a disposable sanitary napkin, for example. The vicinity of the rear end in the anteroposterior direction of the absorbent article corresponds to the position of the sacrum of the wearer. The sacrum of the person is protruding, and the fat and muscles at the sacrum are thin. Therefore, a portion of the person's vicinity of the sacrum is flimsy, and the absorbent article may irritate the skin near the sacrum.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an absorbent article capable of alleviating irritation to the skin around the sacrum.

The absorbent article according to the present disclosure is characterized in that the absorbent article according to the present disclosure includes a central region disposed in a front and rear direction and a width direction orthogonal to each other and below a crotch of a wearer and a rear region located in a rear side of the central region, And an absorbent core disposed at least in the rear region, wherein the rear region is provided with a hip flap bulged outward in the width direction, and at least the absorbent core is compressed to press the center of the absorbent article in the width direction And a maximum width of the hip flap in the width direction is set to be equal to or greater than a maximum width in the forward and backward directions Is located on the rear side of the center of the rear side region of the pair of rear side pressing portions It located at the rear side than the hip position of the maximum width of the flap of the standing, the rear crimping the pair of portions, according to the facing into the rear side has a wide region where the distance in the width direction widened.

1 is a plan view of an absorbent article in one embodiment.
Fig. 2 is a plan view of the absorbent article seen from the opposite side to Fig. 1;
3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG.
Figure 4 is a cross-sectional view of the wearable absorbent article along line 4A-4A in Figure 1;
5 is a cross-sectional view of the wearable absorbent article along line 5A-5A of FIG.
6 is a plan view of the absorbent article in another embodiment.
7 is a plan view of the absorbent article in still another embodiment.

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

In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. It should be noted, however, that the drawings are schematic, and the ratios of the dimensions and the like are different from those of the real world. Therefore, specific dimensions and the like should be judged based on the following description. The drawings may also include portions having different dimensional relationships or ratios with each other.

(1) Overall structure of absorbent article

1 is a plan view of an absorbent article in one embodiment. Fig. 2 is a plan view of the absorbent article seen from the opposite side to Fig. 1; 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG.

The absorbent article 1 has a front and back direction L extending to the front side (back side) and back side (back side) of the wearer, a width direction W orthogonal to the back and forth direction L, To the skin non-facing surface side (T2). The skin-facing side T1 corresponds to the side facing the wearer's skin at the time of use. The skin non-facing surface side T2 corresponds to the opposite side of the skin facing surface side T1.

The absorbent article 1 has a central region S1, a front region S2 and a rear region S3. The central region S1 is located in an area in contact with the excretion of the wearer (e.g., vaginal opening). The central region S1 is a region located under the crotch of the undergarment with the absorbent article mounted on the undergarment. That is, the central region is an area disposed under the crotch of the wearer, that is, between the legs of the wearer. The front region S2 is located forward of the central region S1. And the rear side region S3 is located behind the center region S1. The length of the rear side region S3 in the forward and backward directions L may be longer than the length of the front and rear direction L of the central region S1.

The central region S1 may be provided with a wing 3 to be described later. In this case, the central region S1 may be referred to as a region in which the wing 3 is formed in the forward and backward directions L. The rear region S3 may be provided with a hip flap 4 bulging outward in the width direction W. [

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

The trailing edge of the rear region S3 defines the trailing edge of the absorbent article 1. The boundary between the central region S1 and the front region S2 corresponds to the front edge of the wing 3. The front end edge of the wing 3 is a bottom circle of the wing 3 and is a portion located on the front side of two portions recessed in the inside of the widest direction W in the wing 3. The bottom circle at the front side of the wing 3 may be located at the boundary between the center region S1 and the front 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 surface sheet 10, a non-skin surface sheet 20, and an absorbent body 30. The skin surface sheet 10 is provided on the skin-facing surface side T1 rather than the absorbent body 30. The non-skin face sheet 20 is provided on the skin non-opposing face side T2 more than the absorbent body 30. The absorber 30 is provided between the skin surface sheet 10 and the non-skin surface sheet 20.

The skin surface sheet 10 may have a topsheet 11 and a side sheet 12. The topsheet 11 is a liquid-permeable sheet that transmits a liquid such as body fluids. The topsheet 11 covers the center of the absorbent body 30 at least in the width direction W. [ The topsheet 11 may extend from the front region S2 to the rear region S3 in the forward and backward directions L. [ The side sheet 12 covers the outer edge of the topsheet 11 (the outer end of the widthwise direction W) and extends outward in the width direction W than the topsheet 11. In this embodiment, the absorbent article 1 has the side sheet 12, but the absorbent article 1 does not need to have the side sheet 12. In this case, the topsheet 11 may cover the entire absorbent body 30.

The top- and backsheets 11 are made of any sheet-like material having a structure that transmits liquid, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. As the material of the woven fabric or the nonwoven fabric, any of natural fiber and chemical fiber can be used.

The side sheet 12 can be selected from the same material as the topsheet 11. However, in order to prevent body fluids from flowing out of the absorbent article 1 over the side sheet 12, the side sheet 12 preferably has hydrophobic or water repellent properties. 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 cotton sheet 20 is a liquid-pervious sheet. As the non-skin facing sheet 20, a laminated non-woven fabric mainly made of a polyethylene sheet, polypropylene, etc., a breathable resin film, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as a spunbond or spun lace, or the like can be used.

The absorbent body 30 has an absorbent core 31 in which an absorbent material is laminated and a core wrap 32 covering the absorbent core 31. [ The absorbent material may be formed of, for example, hydrophilic fibers, pulp and SAP.

The absorbent core 31 is disposed at least in the central region S1 and the rear region S3. The absorbent core 31 may be disposed separately in the central region S1 and the rear region S3 or may be integrally disposed over the central region S1 and the rear region S3 . The absorbent core 31 may extend from the central region S1 to the front region S2.

The absorbent core 31 has a middle portion 33 positioned inside the widthwise direction W of the outer edge 31E of the absorbent core 31. The absorbent core 31 is made of, The thickness of the used portion 33 of the absorbent core is larger than the thickness of the absorbent core around the used portion 33. [ The used portion 33 may be located in the central region S1. The unit weight of the absorbent material of the used portion 33 may be higher than the unit weight of the absorbent material located at the outer edge 31E of the absorbent core 31 in the central region S1. The used portion 33 may be located on the rear side in the central region S1 and adjacent to the width slit 41. [

The rear edge 39 of the absorbent core 31 disposed in the rear region S3 is located in a region R1 where a pair of rear pressing portions 84 described later in the width direction W of the absorbent article are formed , It may be inclined forward toward the inside from the outside in the width direction. The inclined portion of the rear edge 39 may be connected to the front and rear slits 42 to be described later.

As described above, the absorbent article 1 has a wing 3 and a hip flap 4. [ The wings 3 and the hip flaps 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 wings 3 may have a side sheet 12 and a non-skin side sheet 20. The center of the wing 3 in the anteroposterior direction L is opposed to the excretion of the wearer. The wings (3) are configured to fold back toward the non-skin facing sheet (20) side. The wing (3) folds back toward the non-skin facing side of the crotch part of the undergarment at the time of use.

The hip flap 4 is located behind the wing 3 and is formed in the rear region S3. The hip flap 4 is disposed between the undergarment and the buttocks of the wearer without being folded back in use. In the present embodiment, the hip flap 4 is not provided with an absorbing material. Alternatively, the heap flap 4 may be provided with an absorbent material.

The outer edge 4E of the hip flap has a plurality of convex portions which may be formed in a corrugated shape having a plurality of convex portions so as to extend from the outer edge 4E of one hip flap 4 to the rear edge of the rear region S3 And extends to the outer edge 4E of the other hip flap 4. [ Alternatively, the plurality of convex portions may be formed only on the outer edge 4E of the pair of hip flaps 4. The width of each convex portion is preferably 20 mm or less, more preferably 10 mm or less. The width of each convex portion 4F is preferably 3 mm or more.

The width of the hip flap 4 in the width direction W of the absorbent article 1 is set to be larger in the region on the front side than the position P1 of the maximum width of the hip flap 4, Or may be substantially larger. More specifically, the overall shape of the hip flap 4 is set to be larger than the position P1 of the maximum width of the hip flap 4, without considering the shape of the convex portion 4F of the outer edge 4E of the hip flap It is preferable that the area is larger as it goes from the front side toward the rear side. More specifically, a hypothetical line formed by connecting the foot of each convex portion 4F formed on the outer edge 4E of the hip flap 4 is located at the position of the maximum width of the hip flap 4 (W) toward the rear side from the front side to the rear side in the area on the front side than the front side (P1).

The width of the hip flap 4 in the width direction W of the absorbent article 1 is set such that it faces backward from the front side in a region behind the position P1 of the maximum width of the hip flap 4 As shown in Fig. The width of the hip flap 4 in the widthwise direction W of the absorbent article 1 may be substantially equal to the width of the absorbent article 1 in the region rearward from the adhesive region 64 It may be small. More specifically, the overall shape of the hip flap 4 can be changed from the front side to the rear side in the region behind the adhesive region 64, without considering the shape of the convex portion 4F of the outer edge 4E of the hip flap, It may be monotonously narrowed as it is directed toward the side. More specifically, an imaginary line generated by connecting the foot portion of each convex portion 4F formed on the outer edge 4E of the hip flap 4 is formed in a region rearward from the adhesive region 64, Toward the inside of the width direction (W). The position P1 of the maximum width of the hip flap is located on the rear side of the center of the rear region S3 in the forward and backward directions L. [

The hip flap 4 may have a side sheet 12 and a non-skin side sheet 20. Alternatively, the hip flap 4 may not have the side sheet 12. In this case, it is sufficient that the topsheet 11 extends to the region of the hip flap 4. In this case, the regions in which the plurality of convex portions are formed can be composed of the same number of sheets.

(2) Slit of absorbent core

The absorbent core 31 may have the width slit 41, the front and rear slits 42, and the auxiliary slit 43. The width slit 41, the front and rear slits 42 and the auxiliary slit 43 are formed so as to bend the absorber 30 in the thickness direction T. [

The unit weight of the absorbing material of the width slit 41, the front and rear slits 42 and the auxiliary slit 43 is lower than the unit weight of the absorbing material of the absorbent core 31 around these slits 41, The width slit 41, the front and rear slits 42, and the auxiliary slit 43 may be a region where the unit weight of the absorbent material is zero, 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 become the boundary line in which the rigidity of the absorbent article 1 is changed. For example, the stiffness of the front region than the width slit 41 may be different from the stiffness of the rear region than the width slit 41. [ More specifically, the unit weight of the absorbent material in the front region than the width slit 41 may be higher than the unit weight of the absorbent material of the width slit 41. [ The unit weight of the absorbent material in the region behind the width slit 41 may be higher than the unit weight of the absorbent material in 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 may extend at least in the width direction W. [ The width slit 41 may extend linearly in parallel in the width direction W or may extend linearly or curved in an inclined manner with respect to the width direction W. [

The width slit 41 of the present embodiment has a curved shape in which the center of the widthwise direction W of the width slit 41 protrudes rearward. More specifically, the center of the widthwise direction W of the width slit 41 is located behind the outer edge of the width slit 41. The length of the width slit 41 in the forward and backward directions L may be constant or may be varied. The length of the width slit 41 in the anteroposterior direction L is preferably 10 mm or more and 50 mm or less at the position of the center line CL passing through the center of the width direction W of the absorbent article, Is not less than 10 mm but not more than 30 mm. Accordingly, the absorber 30 is easily bent along the wearer's skin where the width slit 41 is formed, so that the absorber 30 can fit on the wearer's skin.

The length of the width slit 41 in the width direction is preferably 25 mm or more. This prevents movement of the central region S1 of the absorbent article 1 from being transmitted to the rear region S3.

The width slit 41 may extend from one end of the absorbent core 31 in the width direction W to the other end. 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. [ The absorbent core 31 of the central region S1 is separated from the absorbent core 31 of the rear region S3 by the width slit 41. [ The width slit 41 may extend over the center line CL and partially extend in the width direction W of the absorbent core 31. [

The front and rear slits 42 extend in the forward and backward directions L along the center line CL of the absorbent article in the rear region S3. The front and rear slits 42 may extend linearly in parallel in the forward and backward direction L or may extend linearly or curvilinearly along the center line CL while being inclined with respect to the forward and backward directions L. [ The front and rear slits 42 may be formed in the entire region of the front and rear direction L of the absorbent core 31 in the rear region S3. Instead, the front and rear slits 42 may be formed in a part of the front and rear direction of the absorbent core 31 of the rear region S3.

It is preferable that the front end edge of the front and rear slit 42 is positioned 30 mm or more behind the center of the wing 3 in the back and forth direction L. [ It is preferable that the rear end edge of the front and rear slit 42 is located 200 mm or more behind the center of the wing 3 in the anteroposterior direction L. [ The longitudinal length L of the front and rear slits 42 is preferably 150 mm or more. In the cross section along the anteroposterior direction L of the wearer's body, the grooves (dull heat) between the buttocks are present in a region from the back of the perineum to the corolla. The front and rear slits 42 facilitate the deformation of the absorber 30 in a convex shape with the front and rear slits as apexes. That is, the absorbent body 30 is easily deformed to fit in the groove between the buttocks.

Preferably, the length of the front and rear slits 42 in the width direction W is not less than 1 mm but not more than 15 mm. This makes it easy to deform the absorbent body 30 so as to fit in the groove between the buttocks.

The front and rear slits 42 may be connected to the width slit 41. In this case, the absorbent core 31 of the central region S1, the absorbent core 31 of one side in the width direction W of the rear side region S3, and the absorbent core 31 of the rear side region S3 in the width direction The absorbent core 31 on the other side of the wafer W is divided. Instead, the front and rear slits 42 may be spaced apart from the width slit 41. [

The auxiliary slit 43 is continuous with the front and rear slits 42 and extends outward in the width direction W from the front and rear slits 42. The auxiliary slit 43 may extend at least in the width direction W. [ The auxiliary slits 43 may be formed linearly in parallel in the width direction W or may be linearly or curvedly inclined with respect to the width direction W. [ It is preferable that the auxiliary slit 43 is inclined forward as it goes from the inside to the outside in the width direction W. [ The auxiliary slits 43 extend to both sides in the width direction W of the front and rear slits 42, respectively. A plurality of auxiliary slits 43 may be formed in the forward and backward directions L at intervals.

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

The auxiliary slit 43 constitutes a starting point of deformation in which the absorbent body 30 of the rear region S3 is bent in the thickness direction T. [ That is, the absorbent article 1 is easily bent in the auxiliary slit 43. Accordingly, when the absorbent article 1 is attached to the wearer, the absorbent article 30 is more likely to fit on the curved buttocks of the wearer.

(3)

The absorbent article (1) has a pressed portion formed by pressing at least the absorbent core (31) in the thickness direction (T). The crimping portion may have a front crimp portion 81, a length crimp portion 82, and a pair of rear crimp portions 84.

The front squeeze portion 81 is formed in the central region S1 and the front region S2. The front side pressing portion 81 may be formed by compressing the absorbent body 30 and the topsheet 11 in the thickness direction T. [ The front side crimping portion 81 has a portion along the front-rear direction L formed on both sides in the width direction W of the used portion 33. [ The front side pressing portion 81 may define side edges on both sides in the width direction W of the used portion 33. [

The front side pressing portion 81 is bent in the width direction in the vicinity of the front end edge of the absorbent core 31 and continues in a U-shape. Alternatively, the front side crimping portion 81 may be formed on both sides in the width direction W of the used portion 33 separately. That is, the pair of front-side crimping portions 81 may be formed separately from each other.

The length compression portion 82 is provided on both sides of the center region CL in the rear region S3. The length compression portion 82 may be formed on the front side of the position P1 of the maximum width of the hip flap 4. [ The length compression portion 82 may be formed by compressing the absorbent body 30 and the topsheet 11 in the thickness direction. The length compression portion 82 extends in the forward and backward directions L on both outer sides of the width direction W with respect to the auxiliary slit 43. The length crimping portion 82 may be linear or point-like, and may extend at least in the back-and-forth direction (L). The length presser portion 82 may extend linearly in parallel in the forward and backward direction L or curvedly extend obliquely with respect to the forward and backward direction L. [

The pair of rear pressing portions 84 are provided on both sides of the center region CL in the rear region S3. The rear pressing portion 84 may be formed by compressing the absorbent body 30 and the topsheet 11 in the thickness direction. The pair of rear pressing portions 84 are spaced apart from each other with a center line CL passing through the center of the width direction W of the absorbent article therebetween. The pair of the rear pressing portions 84 are positioned behind the position P1 of the maximum width of the hip flap 4 in the width direction W. [ Preferably, the pair of rear pressing portions 84 are located near the rear end of the rear region S3. Specifically, the pair of the rear pressing portions 84 are located in the vicinity of the region facing the sacrum of the wearer. The rear-side crimping portion 84 may extend linearly or dot-linearly along the front-back direction L. At this time, the rear-side press portion 84 is considered to extend along the forward-backward direction L even if it is slightly inclined or curved with respect to the forward-backward direction L. [ Specifically, the pair of rear pressing portions 84 may partially or wholly extend along the forward and backward directions L. The pair of rear pressing portions 84 has a wide section in which the distance in the width direction W is widened toward the rear side. That is, the rear-side press portion 84 is inclined outward in the width direction W as it goes toward the rear side.

In the embodiment shown in Fig. 1, the pair of length-pressing portions 82 are disposed apart from the pair of rear-side pressing portions 84. [ The distance between the pair of length-pressing portions 82 and the pair of rear-side pressing portions 84 is preferably at least 1 cm, more preferably at least 3 cm. The section between the pair of length compression sections 82 and the pair of rear compression sections 84 where the compression section is not formed may extend over 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 disposed in the wide region R1 sandwiched by the wide region. It is also preferable that a part of the front and rear slits 42 extend in the wide region R1. It is more preferable that the front and rear slits 42 pass through the wide area R1 along the forward and backward directions L. [

The absorbent article 1 comprises a first compression section 85 formed by compressing at least two sheets of the skin surface sheet 10 and the non-skin surface sheet 20 in the thickness direction T, (87) and a third pressing part (86). The first crimping portion 85, the second crimping portion 87 and the third crimping portion 86 are formed at least along the outer edge 4E of the hip flap 4.

(4)

2, the absorbent article 1 includes a first body sticking area 61, a second body sticking area 62, and a second body sticking area 61 provided with a pressure-sensitive adhesive for fixing the absorbent article 1 to the undergarment S, A wing adhesion region 63 and a hip flap adhesion region 64. Fig. These adhesive regions 61 to 64 are formed on skin non-facing surfaces 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 areas 61 to 64 before use. The release sheet 65 is peeled off by the wearer in use.

The first main body sticking area 61 is disposed further forward than the second main body sticking area 62. [ The first main body sticking area 61 is spaced from the second main body sticking area 62 in the back and forth direction L. [ The first main body adhesive region 61 may be arranged on the front side of the width slit 41 from the central region S1 to the front region S2. The second main body adhesive region 62 is arranged on the back side of the width slit 41 and on the rear side region S3. The wing adhesive region (63) is provided on 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 with all the adhesive regions 61 to 64 in the thickness direction T. [ In other words, the adhesive regions 61 to 64 are not formed in the region in which the width slit 41 and the front and rear slits 42 are disposed, when viewed in plan view. The wide area R1 sandwiched by the pair of rear pressing parts 84 may be disposed in an area that does not overlap with the adhesive areas 61 to 64. [

The first crimping portion 85, the second crimping portion 87 and the third crimping 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 formed outside the width direction W of the hip flap adhesion region 64. [

(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 by both legs of the wearer and is subjected to a force directed from the outside of the width direction W to the inside of 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 near the crotch region and in the vicinity of the buttocks. Concretely, the cross-sectional shape of the body in the vicinity of the sensory heat (near the vaginal opening where menstrual discharge occurs) under the crotch of the wearer is a convex shape protruding to the side of the absorbent article 1, with the vagina coming out more than the lower vagina. A central region (S1) of the absorbent article is arranged opposite to the crotch region below the wearer. The absorbent core 1 of the central region S1 is pushed down by the protrusion of the labia majora and deformed to protrude toward the skin non-facing surface side, in a state where the absorbent article 1 is mounted on the undergarment S and also worn by the wearer. Under the wearer's crotch, the absorbent core of the central region S1 is arranged along the body, and leakage under the crotch can be suppressed.

Further, the anus or the dull heat is located behind the perineum part located behind the labia majora of the wearer. The cross-sectional shape of the body along the width direction of the posterior lower side of the perineal part is a shape in which the center in the width direction is recessed. A rear region (S3) of the absorbent article is disposed opposite to the wearer's buttocks.

Fig. 4 is a cross-sectional view of the rear region S3 of the absorbent article in a state of being attached to the wearer. 4 corresponds to a cross section taken along the line 4A-4A in Fig. In Fig. 4, a line indicating the wearer's body is indicated by a chain double-dashed line. For example, night napkins for night use are often used as sleeping faces. Most of the body fluid leakage is caused when a large amount of menstrual discharge is discharged at a time and the menstrual blood just below the vaginal opening is not absorbed in time or when the absorbent located immediately below the vaginal opening is not pushed into the body , Acupuncture flows into the area that is recessed than the buttocks, and the acupuncture points are leaking in the body. If a gap is formed between the buttocks of the body and the absorbent article, the menstrual blood may be transmitted to the back of the back of the isthus through the body, and may leak from the back of the absorbent article.

In the absorbent article of the present embodiment, the side portions of the absorbent core 31 are pushed down by the left and right buttocks in the rear region S3. Therefore, a force is applied to the side portion in the width direction of the absorbent core of the rear region, rather than the center of the absorbent core 31 in the width region, in the rear region. When the side portion of the absorbent core is pushed down by the left and right buttocks, the center in the width direction of the absorbent body in the rear region rises toward the wearer with the front and rear slits 42 as apexes. Therefore, the center in the width direction of the absorbent core 31 of the rear region S3 is easily disposed in the concave portion between the buttocks, and the absorbent core 31 can be fitted along the buttocks of the wearer. As a result, body fluids such as menstrual discharge can be prevented from leaking from the back of the absorbent article through the back side of the back of the body.

The dullness of the wearer becomes shallow as it is directed toward the rear (back). Further, the sacrum is present behind the dull heat. The cross-sectional shape of the body in the region where the sacrum is present is a flat shape than the region where the dullness exists. A region behind the wide region R1 or the wide region R1 formed behind the rear region S3 of the absorbent article 1 is disposed opposite to the sacral portion of the wearer.

Fig. 5 corresponds to a section along the line 5A-5A in Fig. As described above, the relatively front region of the rear region S3 rises toward the wearer with the front and rear slits 42 as apexes. According to this modification, the central portion of the width direction W of the relatively rear side region of the rear side region S3 tends to bulge. The absorbent core 31 forms a relatively flat surface FS in the wide region R1 because a pair of the rear pressing portions 84 which are the origin of the deformation of the absorbent core 31 are provided.

(6) Another embodiment

6 is a plan view of an absorbent article according to another embodiment. In Fig. 6, the same reference numerals are assigned to the same components as those in the above-described embodiment. Hereinafter, a configuration different from the above-described embodiment will be mainly described.

In the absorbent article shown in Fig. 6, the length of the front and rear slits 42 and the shape of the rear edge 39 of the absorbent core 31 disposed in the rear region S3 correspond to the length of the absorbent article 1 ). In the absorbent article shown in Fig. 6, the front and rear slits 42 are not extended to the rear edge 39 of the absorbent core 31 disposed in the rear region S3.

The rear edge 39 of the absorbent core 31 disposed in the rear side region S3 is formed in a wide region (a region in which the pair of rear pressing portions 84 described later is formed in the width direction W of the absorbent article) R1), it is inclined forward toward the inside from the outside in the width direction. The inclined portion of the rear edge 39 extends in the wide region R1 and forms the rear slit 44 in the wide region R1. The rear slit 44 is formed in a part of the wide area R1. Instead, the rear slit 44 may penetrate the wide region R1 along the center line in the forward and backward directions L.

The rear slit 44 may be a region where the unit weight of the absorbent material is zero, that is, a region where the absorbent material is not provided. The rear slit 44 may be a region provided with an absorbent material lower than the unit weight of the absorbent material of the absorbent core 31 around the slit 44. [

7 is a plan view of an absorbent article according to yet another embodiment. In Fig. 7, the same reference numerals are assigned to the same components as those in the above-described embodiment. Hereinafter, a configuration different from the above-described embodiment will be mainly described.

In the absorbent article shown in Fig. 7, the longitudinal compression section 82 provided in the rear region is elongated in the front-back direction L and connected to the rear compression section 84 provided at the rear of the rear region. In this case, it is assumed that the length press-bonding portion 82 indicates a portion of the hip flap 4 which is located in front of the position P1 of the maximum width. The rear side crimping portion 84 indicates a portion on the rear side of the position P1 of the maximum width of the hip flap 4. [

The rear side crimping portion 84 is provided on both sides of the center line CL of the width direction W with the interposition of the center line CL therebetween. The gap between the pair of rear pressing portions 84 decreases once toward the rear side, and widens toward the rear side. As described above, the pair of the rear pressing portions 84 has a wide section in which the distance in the width direction W is widened toward the rear side. The region sandwiched by the wide section of the pair of rear pressing portions 84 corresponds to the wide region R1. In this case as well, as shown in Fig. 5, the wide area R1 is formed on the relatively flat surface FS.

(7) Action / effect

According to one embodiment, the pair of rear pressing portions 84 are positioned on the rear side of the position of the maximum width of the hip flap in the width direction, and the pair of rear pressing portions 84 are located on the rear side And a wide section in which the distance in the width direction is widened. The maximum width of the hip flap in the width direction is located on the rear side of the center of the rear region in the front-rear direction.

The wide area R1 sandwiched by the wide section corresponds to the vicinity of the sacrum of the wearer. There is no crimping portion in this region, and a pair of crimping portions 84 having relatively high rigidity exist on both sides of this region. Thereby, the wide area R1 is maintained on the relatively flat surface FS. Since the relatively flat surface FS corresponds to the skin in the vicinity of the sacrum, the effect on the wearer's skin can be reduced.

The pair of crimping portions 84 are arranged so as to partition between a region facing the vicinity of the sacrum and a portion facing the thick portion of the buttocks. Since the buttocks move relatively heavily, the portion of the absorbent article 1 facing the buttocks is also liable to move in accordance with the movement of the wearer. The movement of the absorbent article 1 is made less likely to be transmitted to the region facing the sacrum, that is, the wide region R1, by the pair of relatively high-strength bonded portions 84. [ As a result, the wide area R1 can be maintained on the relatively flat surface FS, and the effect on the wearer's skin can be reduced. In addition, it is preferable that there is no portion with a high rigidity in the wide region R1. As a result, the influence of the wearer on the skin can be further mitigated.

According to one embodiment, the absorbent article 1 comprises a non-skin facing sheet 20 provided on the skin non-facing surface side with respect to the absorbent core 31, and a non-skin facing sheet 20 provided on the skin non- (61 to 64). The region R1 sandwiched by the wide sections of the pair of the crimping portions 84 and 184 is arranged in an area that does not overlap with the adhesive regions 61 to 64. [ The absorbent article 1 is used in a state sandwiched between the wearer and the undergarment. The adhesive regions 61 to 64 adhered to the undergarment are rubbed together between the wearer and the undergarment, so that wrinkles tend to occur. In one embodiment, the wide area R1, that is, the area facing the sacrum does not overlap with the adhesive areas 61 to 64. [ As a result, the occurrence of wrinkles in the region of the absorbent article 1 facing the sacrum is suppressed. As a result, the region of the absorbent article 1 facing the sacrum can be maintained in a flattened shape.

The absorbent core 31 disposed in the rear region S3 has the slit 42 or 44 extending from the back edge of the absorbent article 1 in the back and forth direction L into the wide region R1, And this slit includes a region where the absorbent material is not provided or a region where an absorbent material having a lower unit weight than that of the absorbent core 31 disposed in the rear region S3 is provided. The absorbent core 31 on the left side of the center line CL of the absorbent article 1 moves to the right when the force is applied to the back side region S3 of the absorbent article from the outside to the inside in the width direction W do. On the other hand, the absorbent core 31 on the right side of the center line CL tends to move to the left. Thereby, there is a possibility that the absorbent core 31 is deformed in the vicinity of the center line CL by a collision of forces. In one embodiment, this force collision can be mitigated by the slit 42 or 44 extending into the wide area R1. As a result, collapse of the shape of the wide region R1 can be suppressed, and the wide region R1 can be maintained as a more flat surface.

The absorbent core 31 disposed in the rear region S3 has the front and rear slits 42 extending along the center line CL passing the center of the widthwise direction W of the absorbent article 1 The front and rear slits 42 include a region in which the absorbent material is not provided or a region in which the absorbent core 31 is lower in unit weight than the absorbent core 31 disposed in the rear region S3. As described above, the side portions of the absorbent core 31 are pushed down by the left and right buttocks in the rear region S3. When the side portion of the absorbent core is pushed down by the left and right buttocks, the center in the width direction of the absorbent body in the rear region rises toward the wearer with the front and rear slits 42 as apexes. Therefore, the center in the width direction of the absorbent core 31 of the rear region S3 is easily disposed in the concave portion between the buttocks, and the absorbent core 31 can be fitted along the buttocks of the wearer. As a result, body fluids such as menstrual discharge can be prevented from leaking from behind the absorbent article by flowing back to the back side of the back side with the body.

The deformation of the absorbent core 31 affects the wide area R1 of the pair of the pressing portions 84. [ Thus, the wide region R1, that is, the region facing the sacrum, slightly protrudes toward the wearer's skin while maintaining the relatively flat surface FS (see Fig. 5). As a result, the rear region of the rear side region S3 also becomes easy to follow the wearer's skin.

At least the absorbent core 31 is pressed so that a pair of lengthwise crimping portions 82 provided on both sides with the center line CL therebetween is pressed against the hip flap 4 in the rear region S3, Of the maximum width. The pair of length compression portions 82 serve as a starting point of the deformation of the absorbent core 31 so that the area of the front and rear slits 42 is raised toward the wearer. This makes it easier to fit the absorber 30 into the gap between the wearer's buttocks in the rear region S3 located behind the central region S1.

According to one embodiment, the pair of length-pressing portions 82 are disposed apart from the pair of rear-side pressing portions 84. Thus, the movement of the absorbent core behind the rear region S3 can be prevented from following the movement of the absorbent core in front of the rear region S3. In particular, the absorbent core in front of the rear region S3 may move relatively large in accordance with the movement of the wearer's hip. Even in this case, as shown in Fig. 1, since the pair of longitudinal compression portions 82 and the pair of rear pressing portions 84 are spaced apart from each other, the movement of the absorbent core behind the rear region S3 is alleviated do. Therefore, since the movement of the absorbent core of the wide region R1 is alleviated, the stimulus applied to the vicinity of the sacrum of the wearer can be reduced.

According to one embodiment, a width slit 41 is formed between the absorbent core disposed in the central region S1 and the absorbent core disposed in the rear region S3 along the width direction W of the absorbent article have. The width slit 41 includes a region where the absorbent material is not provided or an absorbent material having a lower unit weight than that of the absorbent core disposed in the central region and the rear region. The boundary between the width slit 41 and the absorbent core of the central region S1 can be a starting point of deformation of the absorbent article. Likewise, the boundary between the width slit 41 and the absorbent core in the rear region S3 can be a starting point of deformation of the absorbent article. By this width slit 41, the absorbent article 1 can be flexibly deformed in accordance with the deformation of the buttocks when the bulging portion of the wearer's buttocks is pressed. Further, the width slit 41 is likely to be deformed smoothly because it includes the region where the absorbent material is not provided, or the region where the absorbent core is lower in unit weight than the absorbent core disposed in the central region and the rear region. The deformation of the buttocks is absorbed by the width slit 41 when the pressed portion of the wearer's buttocks moves to the lower side of the crotch so that the front and rear regions of the width slit 41 are kept waiting for the wearer. In addition, the width slits 41 can prevent the force applied to the absorbent core of the central region S1 from propagating to the absorbent core of the rear region S3.

According to one embodiment, the absorbent core disposed in the central region S1 has a used portion 33 located inside the width direction of the absorbent core in the width direction and thicker than the thickness of the outer edge of the absorbent core. Preferably, the used portion 33 is adjacent to the width slit 41. As a result, the boundary between the width slit 41 and the absorbent core in the central region S1 is more likely to be bent, and a more definite deformation starting point is formed. Therefore, the absorbent article 1 can be more easily put on the wearer's body.

The rear edge 39 of the absorbent core 31 disposed in the rear region S3 is located at a position where the pair of the pressing portions 84 in the width direction W of the absorbent article 1 Is inclined forward toward the inside from the outside to the inside in the width direction (W) in the formed region R1. The absorbent core 31 on the left side of the center line CL of the absorbent article 1 moves to the right when the force is applied to the back side region S3 of the absorbent article from the outside to the inside in the width direction W do. On the other hand, the absorbent core 31 on the right side of the center line CL tends to move to the left. Accordingly, there is a possibility that the wide region R1 of the absorbent core 31 is deformed in the vicinity of the center line CL by a collision of forces. In one embodiment, the rear edge 39 of the absorbent core 31 is formed so as to extend from the outer side to the inner side in the width direction W in the wide range R1 in the width direction W of the absorbent article 1 And is inclined forward toward the front. This inclination makes it difficult for the left and right absorbent cores 31 to collide with each other at the rear edge 39 of the absorbent core 31, so that the force is relaxed. In this manner, the collision of forces can be mitigated, so that collapse of the shape of the wide area R1 is suppressed. As a result, it is possible to maintain the wide area R1 at a more flat surface.

Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be embodied as modifications and variations without departing from the spirit and scope of the present invention as defined by the appended claims. Accordingly, the description herein is for illustrative purposes only and is not meant to be limiting in any way to the invention.

The entire contents of Japanese Patent Application No. 2015-116102 filed on June 8, 2015 are incorporated herein by reference.

It is possible to provide an absorbent article capable of alleviating irritation to the skin around the sacrum.

1: absorptive article 3: wing 4: hip flap 10: skin surface sheet 11: top sheet 12: side sheet 20: non-skin surface sheet 30: absorbent 31: absorbent core 31: The present invention relates to a core wrapping method and a core wrapping method which can be applied to a core wrapping machine and a core wrapping machine. T: Thickness direction, T1: Skin facing surface side, T2: Skin non-facing surface side, W: Width direction, S1: Center side area , S2: front side region, S3: rear side region, CL: center line, R1:

Claims (10)

Rear direction and the width direction orthogonal to each other,
A central region disposed under the crotch of the wearer,
A rear region located at a rear side of the central region and having a longer front-rear direction than the central region,
And an absorbent core disposed at least in the rear region,
A hip flap bulged outward in the width direction is provided in the rear region,
A pair of rear pressing portions spaced apart from each other by a center line passing through the center of the absorbent article in the width direction by pressing at least the absorbent core is formed in the rear region along the front and rear direction,
The maximum width of the hip flap in the width direction is located on the rear side of the center of the rear region in the front-rear direction,
Wherein the pair of rear side pressing portions are located on the rear side of the position of the maximum width of the hip flap in the width direction,
Wherein the pair of rear squeeze portions have a wide section in which the distance in the width direction is widened toward the rear side,
A pair of longitudinal compression portions provided on both sides with the center line therebetween by pressing at least the absorbent core are formed on the rear side in front of the position of the maximum width of the hip flap,
Wherein the pair of length-pressing portions are disposed apart from the pair of rear-side pressing portions. Rear direction and the width direction orthogonal to each other,
A central region disposed under the crotch of the wearer,
A rear region located at a rear side of the central region and having a longer front-rear direction than the central region,
And an absorbent core disposed at least in the rear region,
A hip flap bulged outward in the width direction is provided in the rear region,
A pair of rear pressing portions spaced apart from each other by a center line passing through the center of the absorbent article in the width direction by pressing at least the absorbent core is formed in the rear region along the front and rear direction,
The maximum width of the hip flap in the width direction is located on the rear side of the center of the rear region in the front-rear direction,
Wherein the pair of rear side pressing portions are located on the rear side of the position of the maximum width of the hip flap in the width direction,
Wherein the pair of rear squeeze portions have a wide section in which the distance in the width direction is widened toward the rear side,
A non-skin facing sheet provided on the skin non-facing surface side with respect to the absorbent core,
Facing face of the non-skin face sheet,
And an area sandwiched by the wide section is disposed in an area that does not overlap with the adhesive area. 3. The absorbent core according to claim 1 or 2, wherein the absorbent core disposed in the rear region has a slit extending from a rear edge of the absorbent core into an area sandwiched by the wide section, the slit having no absorbent material Or an area in which an absorbent material having a lower unit weight than the absorbent core disposed in the rear region is provided. The absorbent core according to claim 1 or 2, wherein the absorbent core disposed in the rear region has front and rear slits extending along the center line, the front and rear slits are disposed in a region where no absorbent material is provided, Wherein the absorbent core comprises a region provided with an absorbent material having a lower unit weight than the absorbent core. 3. The absorbent core according to claim 2, wherein at least a pair of length compression portions provided on both sides with the center line therebetween by pressing the absorbent core are formed in front of the position of the maximum width of the hip flap Absorbent article. 6. The absorbent article as set forth in claim 5, wherein said pair of longitudinal compression portions are disposed apart from said pair of rear pressing portions. 3. The absorbent core according to claim 1 or 2, wherein the absorbent core is also disposed in the central region,
A width slit is provided between the absorbent core disposed in the central region and the absorbent core disposed in the rear region, the width slit extending in the width direction of the absorbent article, And a region provided with an absorbent material having a lower unit weight than that of the absorbent core disposed in the central region and the rear region. 3. The absorbent core according to claim 1 or 2, wherein the absorbent core is also disposed in the central region,
Wherein the absorbent core disposed in the central region has a middle portion that is located inside the width direction than the outer edge of the absorbent core and is thicker than the thickness of the outer edge of the absorbent core. 3. The absorbent core according to claim 1 or 2, wherein the absorbent core is also disposed in the central region,
Further comprising a wing extending outward in the width direction from an outer edge of the absorbent core disposed in the central region. The absorbent article as set forth in claim 1 or 2, wherein a rear edge of the absorbent core disposed in the rear region is formed in a region where the pair of press portions are formed in the width direction of the absorbent article, Is inclined toward the front side as it is directed inward.

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