WO2017077750A1

WO2017077750A1 - Absorbent article

Info

Publication number: WO2017077750A1
Application number: PCT/JP2016/073009
Authority: WO
Inventors: 西谷　和也; 英之木下
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-11-06
Filing date: 2016-08-04
Publication date: 2017-05-11
Also published as: JP6352235B2; KR20180081065A; JP2017086339A; CN108348377B; KR101907369B1; CN108348377A

Abstract

Provided is an absorbent article, which fits closer to the body in the central area facing the excretory opening of the wearer and with which greater peace of mind can be obtained. In the absorbent article (1) according to an embodiment, an absorbent body (30) has a high central section (33) and compressed parts (81) extending in the front-back direction (L) on both sides of the high central section. The absorbent body comprises an absorbent core (31) made of an absorbent material for absorbing liquid and a core wrap (32) for wrapping the absorbent core. The core wrap comprises a first wrapping sheet (32a) provided on the skin surface-side of the absorbent core and a second wrapping sheet (32b) provided on the non-skin surface-side of the absorbent core. The edges (32e) of the first wrapping sheet in the width direction are folded back towards the non-skin surface-side of the absorbent core at the edges of the absorbent core in the width direction and overlap the second wrapping sheet on the non-skin surface-side of the absorbent core. The edges of the first wrapping sheet extend to the positions of the compressed parts on the non-skin surface-side of the absorbent core and are located to the outside of the center line (CL) in the width direction.

Description

Absorbent articles

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

Patent Document 1 discloses a sanitary napkin provided with a top sheet that forms a skin contact surface, a back sheet that forms a non-skin contact surface, and an absorber. The absorber is provided between the top sheet and the back sheet. The top sheet is disposed closer to the skin contact surface than the absorber. Both end portions of the surface sheet in the width direction of the sanitary napkin, that is, both end portions along the longitudinal direction of the sanitary napkin are folded back to the non-skin contact surface side of the absorber at the end of the absorber (patent) Reference 1 FIG. 2). Both end portions of the top sheet are fixed to the back sheet on the non-skin contact surface side with respect to the absorber.

The absorber has a middle-high part thicker than the thickness of the peripheral part at the excretion part facing part facing the excretion opening of the wearer. An absorber has a linear groove part extended in the longitudinal direction of a sanitary napkin in the position adjacent to the middle high part of an absorber in the width direction of a sanitary napkin.

JP 2011-120697

When the wearer wears shorts to which an absorbent article such as a sanitary napkin is attached, the excretory part facing portion receives a force that compresses the absorbent article in the width direction from both legs of the wearer. By this force, the middle and high parts of the absorbent body are deformed in a convex shape toward the excretion part of the wearer and the peripheral part thereof, whereby the middle and high parts are brought into close contact with the wearer's body. Thereby, while the leakage of the bodily fluid (for example, menstrual blood) from a wearer is suppressed, the sense of security that it fits the body is also obtained.

However, in absorbent articles such as sanitary napkins, there is a need to further prevent leakage of bodily fluids and a need to obtain a sense of security that the absorbent article fits the body.

Therefore, an absorbent article is desired in which the absorbent article fits to the body at least at the excretory part-facing portion, and a higher sense of security can be obtained.

The absorbent article includes a front-rear direction and a width direction orthogonal to each other, a central region located in the crotch of the wearer, a rear side region located rearward of the central region, and an absorption disposed at least in the central region. And the absorbent body has a middle-high portion thicker than the thickness of both end portions of the central region in the width direction at the center portion of the central region in the width direction, and both sides sandwiching the middle-high portion And the squeezing part extending in the front-rear direction, and the absorbent body has an absorbent core made of an absorbent material that absorbs liquid, and a core wrap that wraps the absorbent core, and the core wrap is made of the absorbent core The first wrap sheet provided on the skin surface side and the second wrap sheet provided on the non-skin surface side of the absorbent core, and the end of the first wrap sheet in the width direction is Of the end of the absorbent core in the width direction And is folded to the non-skin surface side of the absorbent core and overlaps the second wrap sheet on the non-skin surface side of the absorbent core, and the end of the first wrap sheet is non-skin of the absorbent core It has reached the position of the pressing part on the surface side, and is located on the outer side in the width direction with respect to the center line connecting the centers of the absorbent articles in the width direction.

Drawing 1 is a top view of an absorptive article in one embodiment. FIG. 2 is a plan view of the absorbent article as seen from the side opposite to FIG. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG. FIG. 4 is a plan view of an absorber according to an embodiment. FIG. 5 is a cross-sectional view of the absorbent article taken along line 5A-5A in FIG. 6 is a cross-sectional view of the absorbent article taken along line 6A-6A in FIG. 7 is a schematic cross-sectional view of the absorbent article in use, taken along line 5A-5A in FIG. FIG. 8 is a schematic cross-sectional view of the absorbent article in use along the line 8A-8A in FIG.

Hereinafter, the absorbent article according to the embodiment will be described with reference to the drawings. The absorbent article may be any absorbent article such as a sanitary napkin or an incontinence pad that fits along the vaginal opening. In the following embodiments, a disposable sanitary napkin will be described as an example of an absorbent article.

In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

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

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

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

The front area S2 is located in front of the central area S1. The front edge of the front region S2 defines the front edge 91 of the absorbent article 1. The rear side area S3 is located behind the central area S1. The rear end edge of the rear side region S3 defines the rear end edge 92 of the absorbent article 1. The length in the front-rear direction L of the rear side region S3 may be longer than the length in the front-rear direction L of the central region S1. Thereby, the absorptive article which wraps a wearer's buttocks can be provided, and a sense of security that it can wear for a long time can be given to a wearer.

In the central area S1, a wing 3 described later may be provided. Further, a hip flap 4 swelled outward in the width direction W may be provided in the rear side region S3.

The front edge of the wing 3 is defined by the root of the wing 3, and corresponds to the portion located on the front side of the two portions that are recessed most in the width direction W. The front edge of the wing 3 may define the boundary between the central area S1 and the front side area S2. The rear edge of the wing 3 is defined by the root of the wing 3, and corresponds to a portion located on the rear side of the two portions that are recessed most in the width direction W. In this case, the wing 3 is easy to be folded back with a line along the front-rear direction L connecting the two portions recessed most inside the width direction W as a base point.

The rear edge of the wing 3 may be located between the central area S1 and the rear area S3. Here, an area between the front end edge of the wing 3 and the rear end edge of the wing 3 in the front-rear direction L may be referred to as a “wing area”. In the absorbent article having a wing, the central region S1 is substantially the same region as the wing region. Therefore, it should be noted that the term “central area S1” can be read as “wing area” in the present specification.

The absorbent article 1 has a skin sheet 10, a non-skin sheet 20, and an absorber 30. The absorber 30 is provided between the skin sheet 10 and the non-skin sheet 20. The skin sheet 10 may have a top sheet 11 and a side sheet 12. The top sheet 11 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 11 covers the central portion of the absorber 30 in the width direction W.

The top sheet 11 is made of any sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

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

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

Between the surface sheet 11 and the absorber 30, you may have a 2nd sheet | seat not shown. This second sheet is a liquid-permeable sheet that transmits liquid such as body fluid. Preferably, the hydrophilicity of the second sheet is higher than the hydrophilicity of the topsheet 11. Specifically, the hydrophilicity of the second sheet only needs to be higher than the hydrophilicity of the topsheet 11 at least in the first low weight area 41 described later. Thereby, at least in the first low weight area 41 described later, the second sheet can draw body fluid to the absorber 30 via the top sheet 11. Therefore, the surface sheet 11 can be kept as dry as possible, and the discomfort of the wearer can be reduced.

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

The absorber 30 is disposed at least in the central area S1. The absorber 30 may extend from the central area S1 to the front side area S2 and / or the rear side area S3. The absorber 30 includes an absorbent core 31 made of an absorbent material that absorbs liquid, and a core wrap 32 that wraps the absorbent core 31. The absorbent material constituting the absorbent core 31 can be formed from, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP).

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

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

(2) Detailed Configuration of Absorber Next, the configuration of the absorber 30 will be described more specifically with reference to FIGS. 1 to 6. FIG. 4 is a plan view of the absorber 30 in one embodiment. FIG. 5 is a cross-sectional view of the absorbent article taken along line 5A-5A in FIG. 6 is a cross-sectional view of the absorbent article taken along line 6A-6A in FIG.

The absorber 30 has a middle-high portion 33 in the central portion of the central region S1 in the width direction. The middle / high portion 33 may extend from the central region S1 to the front region S2. The middle-high portion 33 is disposed across the center line CL connecting the centers in the width direction of the absorbent article 1 in the central region S1. The thickness of the middle-high portion 33 is thicker than the thickness of both ends of the central region S1 in the width direction W.

The basis weight of the absorbent material of the middle-high portion 33 may be higher than the basis weight of the absorbent core 31 in the region other than the middle-high portion 33 in the central region S1. The middle-high portion 33 may be adjacent to a first low weight area 41 described later. Preferably, the absorption core 31 on the rear side of the first low weight area 41 is thinner than the thickness of the middle-high portion 33. More preferably, the absorption core 31 of the entire rear side region S3 is thinner than the thickness of the middle-high portion 33. The middle-high part 33 has the thickest highest part and the inclined part connected to the highest part. The inclined portion may be disposed between the highest portion and a front pressing portion 81 described later, and between the highest portion and the first low weight area 41.

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

The weight of the absorbent core 31 in the low weight areas 41 to 43 is preferably 150 g / m ² or less, more preferably 100 g / m ² or less. Further, the weight of the absorbent core 31 in the low weight areas 41 to 43 is more preferably substantially 0 g / m ² . Further, the basis weight of the absorbent core 31 in the low basis weight areas 41 to 43 is preferably 60% or less, and 50% or less of the basis weight of the absorption cores (excluding middle and high portions) around the low basis weight areas 41 to 43. It is more preferable.

Even when the “low weight area” is an area that does not have the absorbent core 31, the core wrap 32 may wrap the entire absorbent core 31 across the

low weight areas

41, 42, and 43. In this case, even if the absorbent core 31 is divided into a plurality of regions, the absorbent body 30 is integrally formed by the core wrap 32. When the core wrap 32 is integrally formed, the manufacturing process can be simplified as compared with the case where the absorbent cores 31 separated from each other are wound with separate wraps.

The boundary between the first low weight area 41, the second low weight area 42, and the third low weight area 43 is a boundary where the rigidity of the absorber 30 changes. Therefore, the first low weight area 41, the second low weight area 42, and the third low weight area 43 correspond to areas where the absorber 30 is easily deformed.

The first low weight area 41 may be provided behind the center of the wing 3 in the front-rear direction L and on the front side of the rear edge of the absorber 30. The first low weight area 41 may be provided across the rear end edge of the wing 3 in the front-rear direction L. When the wearer wears shorts to which an absorbent article such as a sanitary napkin is attached, the central region S1 receives a force that compresses the absorbent article 1 in the width direction from both legs of the wearer. The first low weight area 41 between the central area S1 and the rear area S3 prevents this force from being transmitted to the rear area S3. Thereby, rear side area | region S3 becomes deformable independently of center area S1, and can deform | transform according to the shape of a wearer's buttocks.

Also, in the posture where the wearer is sleeping, a part of the buttocks is crushed. This deformation of the collar portion occurs in the first low weight area 41 between the central area S1 and the rear area S3. The first low weight area 41 absorbs the deformation of the wearer's buttocks in the lying position, and a step is formed behind the central area S1 that absorbs the deformation of the buttocks. Thereby, in the posture where the wearer slept, it is possible to suppress the formation of a gap between the buttock and the vicinity of the first low weight area of the absorbent article 1 due to the deformation of the buttock. Further, the center area S1 on the front side of the first low weight area 41 is fitted to the excretion opening of the wearer, and the rear area S3 on the rear side of the first low weight area 41 is set on the wearer's buttocks (particularly on the floor surface). Can be fitted to the part). Therefore, it can suppress that a wearer's bodily fluid is transmitted to a wearer's body from the center area S1 toward the back side area S3, and can suppress the leakage of a bodily fluid.

The first low weight area 41 may have a curved shape in which the center in the width direction W of the first low weight area 41 protrudes backward. More specifically, the center of the first low weight area 41 in the width direction W is located behind the outer edge of the first low weight area 41. Thereby, in the state (wearing state) where the rear side region S3 is raised with respect to the central region S1, the rear side region S3 is easily deformed so as to rotate with respect to the excretory opening contact region S1. Accordingly, the central area S1 and the rear side area S3 are easily deformed independently.

Preferably, the length of the first low weight area 41 in the width direction W is 25 mm or more. Thereby, it can suppress that the motion of the absorber 30 in central region S1 is transmitted to back side region S3. More preferably, the first low weight area 41 extends from one end of the absorber 30 to the other end in the width direction W. In this case, the front edge of the first low weight area 41 may define the rear edge of the central area S1, and the rear edge of the first low weight area 41 defines the front edge of the rear area S3. May be.

The length of the first low weight area 41 in the front-rear direction L is preferably wider than the thickest part of the absorbent core adjacent to the first low weight area 41. The length of the first low weight area 41 in the front-rear direction L is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less, at the position of the center line CL of the absorbent article 1. Further, the length of the first low weight area 41 in the front-rear direction L is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less, at an arbitrary position in the width direction. Thus, when the force which compresses an absorbent article in the front-back direction L is added by enlarging the width | variety in the front-back direction L of the 1st low weight area | region 41, it will overlap with a part of central region S1. Thus, the rear side area S3 can be deformed. By such a deformation, it is possible to further suppress the force applied to the central area S1 from being transmitted to the rear area S3. As a result, the rear side region S3 can be deformed independently of the central region S1, and the rear side region S3 and the central region S1 are fitted to the shape of the wearer's body even during the wearer's movement. Can continue to.

The second low weight area 42 extends in the front-rear direction L along the center line CL of the absorbent article in the rear side area S3. The second low weight area 42 may extend linearly in the front-rear direction L. Therefore, the center of the rear region S3 in the width direction W easily protrudes toward the wearer's body due to the force from the outside to the inside of the absorbent article (see FIG. 8). Thereby, in back side region S3, the absorbent article 1 can deform | transform according to the shape of a wearer's crack.

The second low weight area 42 is preferably connected to the first low weight area 41. Thereby, the 2nd low weight area 42 can become a convex shape according to a wearer's crack shape from the perineum part to the field of the back. As a result, the wearer can obtain a comfortable fit with the absorbent article 1 even in the buttocks.

The rear end edge of the second low weight area 42 may be located behind the center of the rear side area S3 in the front-rear direction. Further, the rear end edge of the second low weight area 42 may be located on the rear side of the position P1 of the maximum width of the hip flap 4. The length in the front-rear direction L of the second low weight area 42 is preferably 120 mm or more, and more preferably 150 mm or more. In particular, in the absorbent article in which the length in the front-rear direction L of the rear side region S3 is longer than the length in the front-rear direction L of the central region S1, the length in the front-rear direction of the second low weight area 42 as described above. By making the length longer, the rear side area S3 can be fitted to the entire wearer's crack.

In order to ensure that the second low weight area 42 can be formed even if variations (errors) occur during manufacturing, the length of the second low weight area 42 in the width direction W is preferably 1 mm or more. The length of the second low weight area 42 in the width direction W is preferably 15 mm or less in order to prevent the wearer from feeling uneasy about whether the ability to absorb body fluid is low.

In the cross-section along the front-rear direction L of the wearer's body, a groove (crack) between the buttocks exists in a region from the back to the tailbone from the perineum. During use of the absorbent article, the second low weight area 42 is located in the area of the wearer's rupture.

The third low weight area 43 extends outward in the width direction W from the second low weight area 42 in the rear side area S3. The third low weight area 43 may be connected to the second low weight area 42. The front edge line of the third low weight area 43 may extend substantially parallel to the width direction W inside the width direction W. Further, the front edge line of the third low weight area 43 may protrude forward on the outer side in the width direction W. The rear edge line of the third low weight area 43 may be inclined forward as it goes from the inner side to the outer side in the width direction W. Thus, when the third low weight area 43 is inclined, even if the center of the rear side area S3 protrudes in accordance with the wearer's crack, the rear side area S3 is adjusted to the roundness of the wearer's buttocks. Can be easily deformed.

The outer edge of the third low weight area 43 in the width direction W is located inside the outer edge of the absorbent core 31 in the rear area S3. A plurality of third low weight areas 43 may be provided at intervals in the front-rear direction L. Thereby, rear side area S3 can be made to change more easily according to the roundness of a wearer's buttocks.

Measurement of “absorber thickness” in this specification is performed by the following measurement method.

When the absorbent article 1 is enclosed in a package or the like, a sample that is taken out from the package and left in that state in an atmosphere of 20 ° C. ± 2 ° C. and a relative humidity of 60% ± 5% RH is used.

The measurement position is the central part in the product width direction of the absorber. When measuring, it is measured not in a state where the absorbent article is contracted but in a state where the elastic member of the absorbent article is extended. Moreover, parts other than an absorber, such as a skin sheet and a non-skin sheet, are removed. A dial gauge PEACOCK manufactured by Ozaki Mfg. Co., Ltd. is used, a measuring element having a diameter of 10 mm is used, a specimen having a size of 30 mm × 30 mm is prepared, and the thickness of the specimen is measured. A measuring device adjusts so that the measurement pressure with respect to a test piece may be 3 g / cm < ² >. Here, with respect to 10 samples, the above-described measurement is performed in each state, and the average value is defined as “length”.

The absorbent article 1 may have pressure-bonding

portions

51, 52, and 53 in which a sheet closer to the skin surface than the absorbent core 31 and a sheet closer to the non-skin surface than the absorbent core 31 are bonded to each other (FIG. 4). reference). The width of the first crimping part 51 in the front-rear direction L is preferably smaller than the width of the first low weight area 41 in the front-rear direction L. Moreover, it is preferable that the 1st crimping | compression-bonding part 51 is continuously extended from the one end of the absorber 30 along the width direction W to the other end.

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

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

By the first crimping part 51, the second crimping part 52 and the third crimping part 53, the absorbent material constituting the absorbent core passes through the first low weight area 41, the second low weight area 42 and the third low weight area 43. Can be suppressed. Thereby, the shape of the absorption core 31 can be maintained for a long time. The absorbent core 31 is less likely to sway for a long time, and an absorbent article that is less likely to sway all night can be provided.

It is preferable that the first pressure-bonding part 51, the second pressure-bonding part 52, and / or the third pressure-bonding part 53 are not formed on the skin sheet 10. More specifically, the first crimping part 51, the second crimping part 52, and / or the third crimping part 53 may be formed by crimping only the core wrap 32 or only the absorbent core 31 and the core wrap 32. preferable. In other words, it is preferable that the first pressure-bonding part 51, the second pressure-bonding part 52 and / or the third pressure-bonding part 53 are not formed on the skin sheet 10. Thereby, the skin sheet 10 is not damaged and the touch of the skin sheet 10 can be further improved.

When the absorbent core 31 is present in the

low weight areas

41, 42, 43, the crimping

portions

51, 52, 53 are portions where the absorbent core 31 and the core wrap 32 of the

low weight areas

41, 42, 43 are crimped together. It's okay. When the absorbent core is not present in the

low weight areas

41, 42, 43, the crimping

parts

51, 52, 53 may be parts where only the core wrap 32 is crimped. In this case, the absorbent core 31 is divided from each other with the

low weight areas

41, 42, 43 and the crimping

parts

51, 52, 53 as boundaries.

The crimping

parts

51, 52, 53 can be formed by embossing. In addition, since the crimping | compression-

bonding parts

51, 52, and 53 are covered with the skin sheet 10, they cannot be visually recognized from the outside or are difficult to visually recognize.

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

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

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

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

The longitudinal pressing part 82 extends along the front-rear direction L. The longitudinal pressing portion 82 may extend linearly in the front-rear direction L, or may extend in a curved manner inclined with respect to the front-rear direction L. The longitudinal pressing part 82 may be formed in front of the position P1 of the maximum width of the hip flap 4. Since the pair of longitudinal compression portions 82 have relatively high rigidity, they serve as a base point for deformation of the absorbent core 31. The second low weight area 42 sandwiched between the pair of longitudinal pressing portions 82 is more likely to be raised on the wearer's body side. Thereby, the absorbent article which can be more familiar with a wearer's body and can give a more comfortable fit to a wearer can be provided.

It is preferable that the longitudinal pressing part 82 does not reach the first low weight area 41. In other words, the front pressing part 81 and the longitudinal pressing part 82 may be separated from each other at the first low weight area 41. Since the front squeezing portion 81 and the longitudinal squeezing portion 82 having relatively high rigidity are separated from each other at the first low weight area 41, the first low weight area 41 is more easily deformed. Thereby, the effect of fitting the center region S1 and the rear side region S3 as described above to the wearer's body independently of each other can be further exhibited.

The pair of rear side compression parts 84 is provided on both sides of the center line CL in the rear side region S3. The rear side pressing part 84 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction. A pair of rear side compression parts 84 are spaced apart from each other with a center line CL passing through the center in the width direction W of the absorbent article. The pair of rear side compressed parts 84 may be located on the rear side of the position P1 of the maximum width of the hip flap 4. The longitudinal pressing portion 82 and the rear pressing portion 84 are not connected to each other, and are preferably separated from each other at least at the position of the maximum width P1 of the hip flap 4.

The pair of rear pressing parts 84 are arranged so as to partition between a region facing the vicinity of the sacrum and a part facing the thick part of the buttocks. Since the buttocks move relatively vigorously, the portion of the absorbent article 1 that faces the buttocks is also easy to move according to the movement of the wearer. The movement of the absorbent article 1 is not easily transmitted to the region facing the sacrum by the pair of rear side pressing portions 84 having relatively high rigidity. In particular, since the longitudinal squeezing part 82 and the rear squeezing part 84 are not connected to each other, the deformation protruding toward the wearer's rupture between the pair of longitudinal squeezing parts 82 is a pair of rear squeezing via the squeezing part. Transmission to the region between the parts 84 can be suppressed. As a result, the area between the pair of rear pressing parts 84 can be maintained on a relatively flat surface. Thereby, the influence which it has on the skin of a wearer's sacrum vicinity can be reduced.

The core wrap 32 that wraps the absorbent core 31 includes a first wrap sheet 32 a provided on the skin surface side of the absorbent core 31 and a second wrap sheet 32 b provided on the non-skin surface side of the absorbent core 31.

The first wrap sheet 32a and the second wrap sheet 32b may be made of non-woven fabric. The 1st wrap sheet 32a may be comprised, for example from the air through nonwoven fabric. The 2nd wrap sheet 32b may be comprised from the SMS nonwoven fabric, for example. Instead, the first wrap sheet 32a and the second wrap sheet 32b may be composed of the same sheet.

Generally, a nonwoven fabric can be stretched to some extent. Therefore, even if the front squeezing part 81 and the longitudinal squeezing part 82 are formed on the first wrap sheet 32a and the second wrap sheet 32b, the first wrap sheet 32a and the second wrap sheet 32b are not easily torn. Thereby, the core wrap 32 can wrap the absorbent core 31 in a state where the shape of the absorbent core 31 is maintained for a long time. Therefore, it is possible to provide an absorbent article that continues to fit the body for a long time.

The second wrap sheet 32b may have hydrophobicity. Thereby, it can suppress that the liquid absorbed by the absorption core 31 leaks through the 2nd wrap sheet 32b. Instead, the second wrap sheet 32b may have hydrophilicity.

The end portion 32e of the first wrap sheet 32a in the width direction W is folded back to the non-skin surface side of the absorbent core 31 at the end portion of the absorbent core 31 in the width direction W, and on the non-skin surface side of the absorbent core 31. It overlaps with the second lap sheet 32b. An overlapping area O between the folded portion of the first wrap sheet 32a and the second wrap sheet 32b is indicated by a dotted line in FIG.

The first wrap sheet 32a and the second wrap sheet 32b are joined to each other in the overlapping region O. The folded portion of the first wrap sheet 32a is located closer to the non-skin surface than the second wrap sheet 32b. Instead, the folded portion of the first wrap sheet 32a may be located on the skin side with respect to the second wrap sheet 32b.

The end portion 32e of the first wrap sheet 32a reaches the position of the front pressing portion 81 on the non-skin surface side of the absorbent core 31. The edge part 32e of the 1st lap sheet | seat 32a should just reach the position of the front side pressing part 81 at least partially.

When the wearer wears shorts to which an absorbent article such as a sanitary napkin is attached, the central region S1 receives a force that compresses the absorbent article 1 in the width direction W from both legs of the wearer. . This force is applied to the front pressing part 81 provided in the central area S1. The front side compression part 81 has rigidity higher than the rigidity of the part which the absorber 30 is not compressed. Therefore, the front squeezing part 81 that has received a force directed from the outside in the width direction W to the inside compresses the middle-high part 33 in the width direction W. Thereby, it deform | transforms into convex shape so that the middle-high part 33 may closely_contact | adhere with a wearer's body (refer FIG. 7).

Here, since the end portion 32e of the first wrap sheet 32a reaches the position of the pressing portion 81 on the non-skin surface side of the absorbent core, on the non-skin surface side of the absorbent body 30, at the pressing portion 81, The first wrap sheet 32a and the second wrap sheet 32b overlap. Therefore, the rigidity of the region where the front side compressed portion 81 exists further increases. As a result, the force applied from the outer side to the inner side in the width direction W is transmitted to the front side compressed portion 81 without interruption, and the force transmitted to the front side compressed portion 81 compresses the middle / high portion 33 in the width direction W. Therefore, the middle-high part 33 can be deformed into a convex shape so as to be more closely attached to the wearer's body. Thereby, the absorptive article which continues to fit a body for a long time can be provided. The wearer can obtain a higher sense of security that it fits his body.

Moreover, the both ends 32e of the 1st lap sheet | seat 32a are return | folded by the non-skin surface side of the absorption core 31 in the edge part of the absorption core 31 in the width direction W, and the position of the pressing part 81 on the non-skin surface side of an absorption core Is preferably reached. More preferably, both end portions 32e of the first wrap sheet 32a are symmetrical with respect to the center line CL. Thereby, the force applied from the outside to the inside in the width direction W is equally applied to the middle and high parts 33 with the center line CL interposed therebetween, and the middle and high parts 33 are easily deformed into a symmetrical convex shape. Furthermore, since force is equally applied to the middle and high parts 33 in the left and right directions, the absorbent core 31 is less likely to be swayed for a long time as compared with a case in which forces are applied to the left and right sides unevenly.

Further, since the end portion 32e of the first wrap sheet 32a is folded back to the non-skin surface side of the absorbent core 31 at the end portion of the absorbent core 31 in the width direction W, the first wrap sheet 32a and the second wrap sheet The joint portion with the sheet 32b can be disposed on the non-skin surface side of the absorbent body 30, and need not be disposed on the skin surface side of the absorbent body 30. In this case, the touch of the surface of the skin sheet 10 provided on the skin surface side from the absorber 30 can be made more uniform. That is, the smoothness of the surface of the skin sheet 10 in contact with the wearer's skin can be improved, and the absorbent article 1 that is gentle to the skin can be provided.

The skin sheet 10 is more preferably composed of a single sheet. When a force is applied to the central area S1 from the outer side in the width direction W, the outer skin side of the squeezed part 81 is deformed. Even in this case, when the skin sheet 10 is composed of a single sheet, the touch on the skin side of the central region S1 can be made uniform.

Furthermore, the absorbent core 31 at the end of the central region S1 in the width direction W is firmly held by the wound first wrap sheet 32a and the compressed portion 81. Thereby, it can suppress that the shape of the absorption core 31 of the edge part of the center area S1 in the width direction W collapse | crumbles. In particular, the absorption core 31 at the end of the central region S1 in the width direction W is a portion that is easily deformed by a force from the outside in the width direction to the inside. Furthermore, when the absorbent article is a so-called night napkin, the absorbent core 31 at the end of the central region S1 in the width direction W can be deformed many times due to the wearer turning over. Thus, by firmly holding the absorption core 31 at the end of the central region S1 in the width direction W that receives the force from the outside in the width direction many times, the end of the central region S1 in the width direction W is firmly held. It can suppress that the shape of the absorption core 31 collapses.

It is preferable that the end portion 32e of the first wrap sheet 32a does not reach the highest portion of the middle-high portion 33 having the largest thickness on the non-skin surface side of the absorbent core 31. That is, the end portion 32e of the first wrap sheet 32a may be located between the highest portion of the middle-high portion 33 and the front pressing portion 81 on the non-skin surface side of the absorbent body 30. According to this configuration, the position between the thickest part of the middle and high part 33 and the compressed part 81 is likely to be the deformation base point of the absorbent body 30. Therefore, it can be easily deformed into a convex shape so that the middle-high portion 33 is more closely attached to the wearer's body.

The end portion 32e of the first wrap sheet 32a may be folded back to the non-skin surface side at least in the central region S1. Instead, the end portion 32e of the first wrap sheet 32a may be folded back to the non-skin surface side in the entire front-rear direction L. In this case, the end portion 32e of the first wrap sheet 32a may reach the position of the longitudinal pressing portion 82 on the non-skin surface side in the rear side region S3. However, it is preferable that the end portion 32e of the first wrap sheet 32a does not reach the second low weight area 42 on the non-skin surface side in the rear side region S3. In particular, when there is no first wrap sheet 32a on the non-skin surface side of the second low weight area 42 in the rear side area S3, the second low weight area 42 and an area outside the second low weight area 42 in the width direction W. And the rigidity difference becomes high. Thereby, rear side area S3 becomes easier to protrude toward a wearer's explosion, and a wearer can obtain a feeling of fitting more.

At least one of the first wrap sheet 32a and the second wrap sheet 32b includes a thermoplastic resin at least in the region of the front pressing portion 81 on the non-skin surface side of the absorbent body 30. In the present embodiment, the second wrap sheet 32b includes a thermoplastic resin. An example of the thermoplastic resin is polypropylene.

Since at least one of the first wrap sheet 32a and the second wrap sheet 32b includes a thermoplastic resin, the first wrap sheet 32a and the second wrap sheet 32a are formed by heat when forming the front squeezing part 81 and / or the longitudinal squeezing part 82. The two wrap sheets 32b are welded to each other at the pressing portion 81. Thereby, since the core wrap 32 can hold | maintain the absorption core 31 firmly, the shape of the absorption core 31 becomes difficult to collapse.

(3) Adhesive region As shown in FIG. 2, the absorbent article 1 includes a first main body adhesive region 61, a second main body adhesive region 62, and a wing provided with an adhesive for fastening the absorbent article 1 to the underwear S. It has an adhesive region 63 and a hip flap adhesive region 64. These

adhesive regions

61, 62, 63, 64 are provided on the non-skin surface side of the non-skin surface sheet 20. The

adhesive regions

61, 62, 63, 64 may be covered with a release sheet in a state before use. The release sheet prevents deterioration of the adhesive in the

adhesive regions

61, 62, 63, 64 before use. The release sheet is removed by the wearer during use.

The first main body adhesive region 61 is disposed in front of the second main body adhesive region 62. The first main body adhesive region 61 and the second main body adhesive region 62 extend in the front-rear direction L. The first main body adhesive region 61 may be disposed in front of the first low weight area 41 and straddling the central region S1 and the front region S2. The second main body adhesive region 62 is disposed in the rear region S3 on the rear side of the first low weight area 41. It is preferable that the 1st main body adhesion area | region 61 and the 2nd main body adhesion area | region 62 are not provided on the centerline CL. The wing adhesive region 63 is provided in the wing 3. The hip flap adhesive region 64 is provided in the hip flap 4. The hip flap adhesive region 64 can easily transmit the force from the underwear to the pair of longitudinal pressing portions 82.

The first low weight area 41 is preferably arranged in a region that does not overlap with the

adhesive regions

61, 62, 63, 64 in the thickness direction T. More specifically, the first low weight area 41 is provided in a region between the first main body adhesive region 61 and the second main body adhesive region 62. In other words, the first main body adhesive region 61 and the second main body adhesive region 62 extend in the front-rear direction L, but are separated from each other at the first low weight area 41. Thereby, since the 1st low weight area 41 cannot be directly stopped by underwear, it can change freely. Therefore, even when the central region S1 and the rear side region S3 are deformed together with the underwear, the force transmitted from the underwear can be effectively divided by the first low weight area 41. Thereby, even if it is during a wearer's operation | movement, the center area | region S1 and the rear side area | region S3 can be made to closely_contact | adhere to a wearer's body.

The second low weight area 42 is preferably arranged in a region that does not overlap with the

adhesive regions

61, 62, 63, 64 in the thickness direction T. More specifically, the second low weight area 42 is provided between the plurality of second main body adhesive areas 62.

It is preferable that the pair of longitudinal pressing portions 82 is provided in a region overlapping the second main body adhesive region 62. Thereby, force becomes easy to be transmitted from the underwear to the pair of longitudinal pressing portions 82 via the second main body adhesive region 62. As a result, it becomes easier to fit the center of the rear side region S3 according to the wearer's crack.

The

adhesive regions

61, 62, 63, 64 are present in the overlapping region O where the first wrap sheet 32 a and the second wrap sheet 32 b overlap on the non-skin surface side of the absorbent body 30, and the thickness of the middle-high portion 33 is the largest. It is preferable that the portion is not reached. In the overlapping area O between the first wrap sheet 32a and the second wrap sheet 32b, the absorbent article 1 is directly attached to the shorts. Therefore, the force received from the underwear from the inner side to the outer side in the width direction W can be more effectively transmitted to the mid-high portion 33. Thereby, the middle-high part 33 can be made to fit a wearer's body more (refer also FIG. 7).

(4) Absorbent article currently worn Next, the mounting state of the absorbent article 1 configured as described above will be described. FIG. 7 is a cross-sectional view based on the 5A-5A cross section of FIG. 1 in a state where the absorbent article 1 is attached to the wearer. FIG. 8 is a cross-sectional view based on the 8A-8A cross section of FIG. 1 in a state where the absorbent article 1 is attached to the wearer.

When the absorbent article 1 as a sanitary napkin is worn, the absorbent article 1 is fixed to the underwear S. The central area S1 of the absorbent article 1 is sandwiched between the legs of the wearer and receives a force from the outside in the width direction W toward the inside in the width direction W. By this force, the central area S1 is lifted so as to fit near the excretion opening of the wearer (see FIG. 7).

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

In the rear side region S3, a second low weight area 42 extending in the front-rear direction L along the center line CL is formed. Therefore, the center of the rear region S3 in the width direction W easily protrudes toward the wearer's body due to the force from the outside to the inside of the absorbent article (see FIG. 8). Thereby, in back side region S3, the absorbent article 1 can deform | transform according to the shape of a wearer's crack. As a result, the wearer can obtain a comfortable fit with the absorbent article 1 even in the buttocks.

Here, the length of the second low weight area 42 in the front-rear direction L is preferably 120 mm or more, and more preferably 150 mm or more. Thereby, the rear side area S3 can be along the wearer's rupture from the perineum of the wearer to the caudal bone.

Further, when the hip flap adhesive region 64 is provided in the hip flap 4, a force that compresses the rear side region S <b> 3 of the absorbent article from the underwear toward the center in the width direction W through the hip flap adhesive region 64. It becomes easy to add. Thereby, the center of the rear side region S3 in the width direction W becomes more easily protruded toward the wearer's crack.

The longitudinal pressing portion 82 and the rear pressing portion 84 are not connected to each other, and are preferably separated from each other at least at the position of the maximum width P1 of the hip flap 4. Thereby, it can suppress that the force added to a pair of longitudinal pressing part 82 is transmitted to the area | region pinched | interposed into a pair of back side pressing parts 84. FIG. As a result, in the rear side region S3, the region between the pair of longitudinal pressing portions 82 is protruded toward the wearer's crack, while the region between the pair of rear pressing portions 84 is made relatively flat. be able to.

In the front-rear direction L, the absorbent article being worn has a generally round shape along the roundness of the wearer's buttocks. However, as described above, when the center of the rear side region S3 protrudes along the wearer's crack, it may be difficult to deform round along the roundness of the wearer's buttocks. Here, if the third low weight area 43 extending outward from the second low weight area 42 is formed, even if the center of the rear side area S3 protrudes along the wearer's crack, the wearer's Depending on the roundness of the buttocks, the rear side region S3 is easily rounded in the front-rear direction L.

Furthermore, it is preferable that the rear edge line of the third low weight area 43 is inclined forward as it goes from the inside to the outside in the width direction W. Thereby, when the center of rear side region S3 protrudes along a wearer's crack, it becomes easy to carry out round deformation in the front-back direction L so that rear side region S3 may fit the shape of a wearer's buttocks.

According to the absorbent article which concerns on one Embodiment, the fabric weight of the absorbent material of the 1st low fabric weight area | region 41 is smaller than the fabric weight of the surrounding absorbent material. Thereby, the force received in the central region S1 is suppressed from being transmitted to the rear region S3, and conversely, the force received in the rear region S3 is suppressed from being transmitted to the central region S1. Further, the length of the first low weight area 41 in the front-rear direction L is longer than the thickest portion of the absorber adjacent to the first low weight area 41. Specifically, the length of the first low weight area 41 in the front-rear direction L is preferably 10 mm or greater and 50 mm or less. Thus, since the length of the 1st low weight area 41 in the front-back direction L is comparatively long, it can deform | transform so that the absorption core of back side area S3 may overlap with the absorption core of center area S1. Moreover, it is also possible to deform | transform so that the absorption core of back side area | region S3 may overlap under the absorption core of central area S1. Further, the rear side region S3 can be deformed so as to rotate by a predetermined angle to the left and right about the center of the central region S1. In order to facilitate the deformation in this way, the first low weight area 41 preferably extends from one end to the other end in the width direction W.

For example, when the wearer turns over while lying down, the wearer moves to twist the upper body or lower body of the wearer first. Due to this movement, the rear region S3 of the absorbent article may be deformed so as to be twisted or rotated relative to the central region S1. Even in this case, since the length of the first low weight area 41 is relatively long as described above, the central area S1 and the rear side area S3 are deformed independently, and the central area S1 and the rear side area S3 are deformed. It is possible to maintain a state in which each of them fits the wearer's body. That is, even when the wearer is operating, the state in which the central region S1 is fitted near the excretion opening and the rear region S3 is fitted to the buttocks is continuously maintained.

In order to make the absorbent article easily twisted at the first low weight area 41, the first low weight area 41 has a curved shape in which the center in the width direction W of the first low weight area 41 protrudes rearward. It is preferable. Thereby, even if it is a case where the whole absorptive article is curving in accordance with roundness of a wearer's buttocks, it goes to the outside in the width direction of the first low weight area 41 and sandwiches the first low weight area 41. It becomes difficult for the absorption cores 31 to collide with each other. As a result, the absorbent article is more easily twisted at the first low weight area 41.

As described above, the present invention has been described in detail using the above-described embodiments. However, it is obvious for those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

Note that the entire content of Japanese Patent Application No. 2015-218870 filed on November 6, 2015 is incorporated herein by reference.

It is possible to provide an absorbent article in which the absorbent article fits the body at least at the excretory part-facing part and can obtain a higher sense of security.

1: Absorbent article 10: Skin sheet 20: Non-skin sheet 30: Absorbent body 31: Absorbent core 32: Core wrap 32a: First wrap sheet 32b: Second wrap sheet 33: Middle high part 41: First low weight area 42: 2nd low weight area 43: 3rd low weight area 51: 1st crimping part 52: 2nd crimping part 53: 3rd crimping part 61: 1st main body adhesion area 62: 2nd main body adhesion area 63: Wing adhesion Area 64: Hip flap adhesive area 81: Front pressing part 82: Longitudinal pressing part 84: Rear pressing part L: Front / rear direction W: Width direction T: Thickness direction O: Overlapping area S1: Central area S2: Front side area S3: Rear Side zone CL: Center line

Claims

The front-rear direction and the width direction orthogonal to each other;
A central area located at the inseam of the wearer;
A rear region located on the rear side of the central region;
An absorber disposed at least in the central region,
The absorbent body has a middle-high portion thicker than the thickness of both end portions of the central region in the width direction at the central portion of the central region in the width direction, and a squeeze extending in the front-rear direction on both sides across the middle-high portion And
The absorber has an absorbent core made of an absorbent material that absorbs liquid, and a core wrap that wraps the absorbent core,
The core wrap has a first wrap sheet provided on the skin surface side of the absorbent core, and a second wrap sheet provided on the non-skin surface side of the absorbent core,
An end portion of the first wrap sheet in the width direction is folded back to a non-skin surface side of the absorbent core at an end portion of the absorbent core in the width direction, and the first wrap sheet is turned on the non-skin surface side of the absorbent core. It overlaps with 2 wrap sheets,
The end portion of the first wrap sheet reaches the position of the squeezed portion on the non-skin surface side of the absorbent core, and the width direction is more than a center line connecting the centers of the absorbent articles in the width direction. Absorbent article located on the outside.
The absorber has a first low weight area extending along the width direction between the central area and the rear side area,
The absorbent article according to claim 1, wherein the first low-weight area is adjacent to the middle-high portion.
A non-skin surface sheet provided on the non-skin surface side of the absorber,
An adhesive region provided on the non-skin surface side of the non-skin sheet,
The said adhesion area | region exists in the duplication area | region of the said 1st wrap sheet and the said 2nd wrap sheet in the non-skin surface side of the said absorber, and has not reached the thickest part of the said middle-high part. Or the absorbent article of 2.
The absorber has a first low weight area extending along the width direction between the central area and the rear side area,
The adhesive region extends in the front-rear direction at least in the central region and the rear region,
The absorbent article according to claim 3, wherein the absorbent article is divided from each other at the first low weight area.
The absorber includes a first low weight area extending along the width direction between the central area and the rear side area, and a second low weight area along the center line in the rear side area, Have
The absorbent article according to any one of claims 1 to 4, wherein the second low weight area is connected to the first low weight area.
The absorbent body has a pair of longitudinal pressing portions provided on both sides of the second low weight area in the rear side region,
The absorbent article according to claim 5, wherein the pair of longitudinal pressing portions extend in the front-rear direction so as not to reach the first low weight area.
The absorptivity according to any one of claims 1 to 6, wherein the end portion of the first wrap sheet does not reach a portion having the largest thickness of the middle-high portion on the non-skin surface side of the absorbent core. Goods.