KR20180120780A - Absorbent article - Google Patents

Abstract

The absorbent article 1 has a folding line FL1 for folding the absorbent article so that the skin-facing sides of the absorbent article face each other. The absorber has a low-unit weight portion 41 provided at the boundary between the center region and the rear region and also extending in the width direction. The absorbent article has a first joint portion (61) located forward of the low unit weight portion and a second joint portion (62) located behind the low unit weight portion. The elastic member 91 extends over a region extending outward in the width direction from the low-unit weight portion or the low-unit weight portion. The folding line is provided in the lower unit weight portion such that the lower unit weight portion rises to the wearer side by the contraction of the elastic member in the deployed state in which the absorbent article is deployed.

Description

Absorbent article

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

Absorbent articles such as sanitary napkins, panty liners, and incontinence pads are known. The skin-facing surface of the absorbent article is provided with a bonding portion for bonding to the undergarment. The absorbent article disclosed in Patent Document 1 has at least a wing joint portion and a hip flap joint portion. When the absorbent article of Patent Document 1 is to be attached, the wing joint portion and the hip flap joint portion are joined to the undergarment while the undergarment is detached from the body, and the absorbent article is pulled up through the undergarment.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2011-72651

Generally, the undergarment is constituted by a material having elasticity, and is stretched so as to conform to the wearer's body upon installation. On the other hand, the whole of the absorbent article does not stretch to conform to the body upon attachment. Therefore, when the absorbent article and the underwear are pulled together at the time of mounting, only the undergarment is stretched, and a shearing force is generated at the wing joint portion and the hip flap joint portion. Particularly, since the wearer grasps around the waist of the underwear and pulls up the underwear, a shearing force is generated at the hip flap joint located at the rear of the product, and the hip flap joint may fall from the underwear. The rear end edge of the absorbent article is bent toward the skin facing surface side or the position of the rear side region of the absorbent article is shifted in the width direction when the absorbent article is detached from the undergarment such as the hip flap joint, , A feeling of discomfort at the time of wearing and a fount of excretion may occur.

It is therefore an object of the present invention to provide an absorbent article capable of suppressing uncomfortable feeling at the time of wearing and suppressing leakage of excretion.

The absorbent article (absorbent article 1) relating to the present disclosure has a longitudinal direction (front and rear direction L) and a width direction (width direction W) orthogonal to each other and a central region (Absorber (30)) disposed in the central region and the rear region, and an elastic member (30) disposed in the central region and the rear region, (Abutting portion (60)) provided on the skin non-facing surface of the absorbent article and adapted to be joined to the undergarment, and an elastic member (elastic member (91)) extending in the width direction, (Folding line FL1) for folding the faces so as to face each other, wherein the absorbent body is provided at a boundary between the central region and the rear region, ) Unit weight portion (low unit weight portion 41) Unit weight portion is lower than a unit weight of the center portion in the front-rear direction of the central region, the joining portion includes a first joining portion (first joining portion (61)) positioned forward of the low- (Elastic member (91)) from the low-unit weight portion or the low-basis weight portion in the width direction (second joining portion (62) Unit weight portion is provided on the lower unit weight portion such that the lower unit weight portion rises to the wearer side due to the contraction of the elastic member in the deployed state in which the absorbent article is deployed .

1 is a plan view of an absorbent article according to an embodiment.
Fig. 2 is a rear view of the absorbent article shown in Fig. 1. Fig.
3 is a cross-sectional view of the absorbent article taken along the line AA in Fig.
4 is a cross-sectional view of the absorbent article taken along line BB in Fig.
5 is a cross-sectional view of the absorbent article taken along the line CC in Fig.
Fig. 6 is a schematic perspective view of an absorbent article in a deployed state in which individual packages are developed. Fig.
7 is a schematic enlarged view of the low unit weight portion in Fig. Fig. 7A is a stretched state in which the elastic member is elongated, and Fig. 7B is a contraction state in which the elastic member is contracted.
Fig. 8 is a schematic cross-sectional view of the absorbent article in the mounted state, taken along the line CC in Fig. 1. Fig. 8A shows a state before the absorbent article 1 in a deployed state is joined to the undergarment and the undergarment is pulled up. Fig. 8B shows a state after the underwear shown in Fig. 8A is pulled up.
9 is a plan view of an absorbent article according to a modification.
Fig. 10 is a rear view of the absorbent article shown in Fig. 9; Fig.

At least the following will become apparent from the description of the present specification and the accompanying drawings.

Rear direction and the width direction orthogonal to each other,

A central region disposed in the crotch of the wearer,

A rear region located on the rear side of the central region,

An absorber disposed in the central region and the rear region,

An elastic member extending and retracting in the front-

An abutment portion provided on the skin non-facing surface of the absorbent article and joined to the undergarment,

The absorbent article having a folding line extending in the width direction and folded so that the skin-facing surfaces of the absorbent article are opposed to each other,

Wherein the absorber has a low unit weight portion provided at a boundary between the central region and the rear region and extending in the width direction,

The unit weight of the lower unit weight portion is lower than the unit weight of the central portion of the central region in the front-

The joining portion has a first joining portion located forward of the low unit weight portion and a second joining portion located rearward of the low unit weight portion,

The elastic member extends over a region extending from the low-unit weight portion or the low-basis weight portion to the outside in the width direction,

Wherein the folding line is provided in the low unit weight portion such that the low unit weight portion rises to the wearer side due to the contraction of the elastic member in a deployed state in which the absorbent article is deployed.

The unit weight portion is lower in the unit weight than the center portion in the front-rear direction of the central region, and is easily deformed. The elastic member is deformed so that the length in the longitudinal direction of the low unit weight portion is shortened due to the contraction of the elastic member in the expanded state because the elastic member is extended to the region extending outward in the width direction from the low unit weight portion or the low unit weight portion, The low unit weight portion shrinks in the forward and backward directions.

At the time of installation, the absorbent article is pulled up together with the undergarment after being fixed to the undergarment through the first and second joints in a state in which the lower unit weight portion is contracted. At this time, the region where the unit weight is shrunk by extension of the undergarment is extended, and the absorbent article is deformed following the deformation of the undergarment. Therefore, the first joint and the second joint are difficult to fall off from the underwear at the time of mounting, and are easy to maintain the fixed position before raising the underwear. The absorbent article can be prevented from being unintentionally bent or shifted at the time of attaching, and it is possible to suppress discomfort and leakage of excretion when worn. Particularly, even when a wearer grips the waist of the underwear and pulls up the underwear, even if a shearing force is generated at the second joint located at the rear of the product, the joint state of the second joint can be maintained, It is possible to suppress the problem that the edge is bent toward the skin facing side or the position of the rear region of the absorbent article is shifted in the width direction.

Further, since the folding line is provided in the low unit weight portion so that the low unit weight portion rises to the wearer side in the deployed state, the low unit weight portion maintains the bonding position of the absorbent article without hindering the bonding between the underwear and the joining portion, It is possible to suppress discomfort and wastes of excretion when worn.

As such an absorbent article,

It is preferable that at least a part of the folding line is provided at a position which does not coincide with the center of the low unit weight portion in the longitudinal direction.

According to this absorbent article, since the folding line is the folding with respect to the wearer, the adjacent region adjacent to the folding line in the low-unit weight portion rises toward the wearer with the folding line as a starting point in the unfolded state. The folding line does not coincide with the center of the low unit weight portion in the back and forth direction but is provided to be shifted in the back and forth direction with respect to the center of the low unit weight portion in the back and forth direction. The front end edge of the low unit weight portion and the rear end edge of the low unit weight portion located on the side away from the folding line become longer in the forward and backward direction of the rise in the deployed state of the absorbent article, . The lower unit weight portion can maintain the bonding position of the absorbent article without hindering the bonding between the undergarment and the bonding portion and can further suppress the discomfort and the leakage of the excretion at the time of wearing.

As such an absorbent article,

A skin surface sheet provided on the skin-facing surface side of the absorbent body,

It is preferable that the skin surface sheet is not bonded to a member provided on the skin non-facing surface side with respect to the skin surface sheet in a region overlapping with the low unit weight portion.

According to this absorbent article, since the skin surface sheet is not bonded to the member provided on the skin non-facing surface side with respect to the skin surface sheet in the low unit weight portion, when the lower unit weight portion is deformed by the elastic member to shrink, The seat becomes liable to be deformed so as to bulge to the wearer's side. The skin surface sheet is deformed so as to protrude toward the wearer side, whereby the skin surface sheet is elongated according to the elongation of the undergarment when the undergarment is lifted, and the shearing force generated at the joint portion can be suppressed.

As such an absorbent article,

Skin surface sheet provided on the skin non-facing surface side with respect to the absorbent body,

The skin surface sheet is not bonded to the absorbent body in a region overlapping with the low unit weight portion,

It is preferable that the non-skin face sheet is bonded to the absorbent body in a region overlapping with the low-unit weight portion.

According to such an absorbent article, since the skin surface sheet and the absorbent body are not bonded, and the non-skin face sheet and the absorbent body are joined together, the rigidity of the absorbent body on the skin facing side of the absorbent body is lower than that of the skin non-facing face side. Therefore, when the low-molecular-weight portion is deformed to be shrunk by the elastic member, the low-molecular weight portion tends to rise toward the skin-facing surface side. The lower unit weight portion in the contracted state in the forward and backward directions can maintain the bonding position of the absorbent article without inhibiting the bonding between the undergarment and the bonding portion and can further suppress the feeling of discomfort at the time of wearing and the leakage of the excretion.

As such an absorbent article,

It is preferable that the low-unit weight portion is disposed in a region that does not overlap the joining portion.

According to such an absorbent article, it is possible to restrain the joining portions from sticking to each other when the low unit weight portion shrinks, and to maintain the joining state of the absorbent article and the underwear through the joining portion. It is possible to restrain the absorbent article from being unintentionally bent or shifted at the time of wearing, and it is possible to further suppress discomfort at the time of wearing and leakage of excretion.

As such an absorbent article,

It is preferable that the rear edge of the second joint is disposed behind the shrinkage area contracted in the forward and backward direction by the elastic member.

According to such an absorbent article, the second joint portion located behind the shrinkage region is less likely to shrink due to shrinkage of the elastic member in its deployed state, and it is easy to maintain the joint state with the undergarment. In addition, when the underwear is pulled up, the shrinking region extends along with the deformation of the underwear, and it is easy to maintain the bonding state of the underwear with the second joining portion located behind the shrinking region. Therefore, it is possible to maintain the bonding position of the absorbent article and to further suppress discomfort at the time of wearing and leakage of excretion.

As such an absorbent article,

And a hip flap bulging outward in the width direction in the rear region,

Wherein the abutment has a third abutment provided on the hip flap,

And the third joint is preferably disposed behind the shrinkage region which contracts in the forward and backward direction by the elastic member.

According to such an absorbent article, the third joint portion located rearward than the shrinkage region is less likely to shrink due to shrinkage of the elastic member in the deployed state, and it is easy to maintain the joint state with the undergarment. Further, when the underwear is pulled up, the shrinking region extends along with the deformation of the undergarment, and it is easy to maintain the bonding state of the underwear and the third joint located rearward of the shrinking region. The back flap of the hip flap can be suppressed from being generated and wrinkles can be suppressed.

As such an absorbent article,

A hip flap bulging outward in the width direction in the rear region,

And a wing which is adjacent to the hip flap and bulges outward in the width direction in the central region,

It is preferable that the lower unit weight portion is provided at the outer edge of the hip flap and the outer edge of the wing is a narrowing portion narrowed inward in the width direction or a region extending outward in the width direction from the narrowing portion .

The central region is caught by the legs of the wearer and is likely to be deformed by force or the like directed from the outer side in the width direction to the inner side in the width direction. The deformation of the central region can be prevented from propagating to the hip flap by the low unit weight portion because the low unit weight portion is provided in the region extending from the constricted portion or the constricted portion to the outside in the width direction. Therefore, it is possible to suppress distortion and wrinkles of the hip flap, thereby suppressing discomfort and leakage of excretion when worn.

As such an absorbent article,

And a hip flap bulging outward in the width direction in the rear region,

Wherein the outer edge of the hip flap has a concave portion recessed inward in the width direction,

It is preferable that the concave portion is disposed in a region behind the trailing edge of the low unit weight portion.

According to this absorbent article, since the concave portion is arranged in the region behind the rear end edge of the low unit weight portion, propagation of deformation of the low unit weight portion backward from the concave portion is suppressed, and folding or wrinkling occurs in the whole hip flap Can be suppressed. Therefore, distortion and wrinkling of the hip flap can be further suppressed, and discomfort and leakage of excretion can be suppressed at the time of wearing.

=== Regarding the absorbent article related to the present embodiment ===

Hereinafter, an absorbent article related to the embodiment will be described with reference to the drawings. The absorbent article may be any absorbent article such as panty liner (vaginal discharge sheet), sanitary napkin, incontinence pad, or the like. In the following embodiments, a disposable sanitary napkin is 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 proportions of the respective dimensions and the like may be different from the actual ones. Therefore, specific dimensions and the like should be judged based on the following description. Also, the drawings may 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 according to an embodiment. Fig. 2 is a rear view of the absorbent article shown in Fig. 1. Fig. 3 is a cross-sectional view of the absorbent article taken along line A-A in Fig. 4 is a cross-sectional view of the absorbent article taken along the line B-B in Fig. 5 is a cross-sectional view of the absorbent article taken along the line C-C in Fig.

The absorbent article 1 has a longitudinal direction L, a width direction W and a thickness direction T. [ The back-and-forth direction L is a direction extending from the front side (rear side) to the rear side (back side) of the wearer, or a front side extending from the rear side of the wearer. The width direction W is a direction orthogonal to the longitudinal direction L. [ The thickness direction T is a direction extending from the skin-facing surface side T1 of the wearer to the skin-facing surface side T2 and a direction orthogonal to the front-rear direction L and the widthwise direction W. 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 side opposite to the skin facing side T1, that is, toward the skin opposite to the wearer's skin at the time of use.

The absorbent article 1 has a central region S1, a front region S2 and a rear region S3. The central region S1 is an area opposed to the excretion of the wearer (e.g., vaginal opening). When the absorbent article 1 is attached to the undergarment, the central region S1 is located in the crotch part of the undergarment. That is, the central region S1 is an area disposed between the crotch of the wearer, that is, between the legs of the wearer.

The front region S2 is located in front of the center region S1. The front edge of the front region S2 defines the front edge of the absorbent article 1. The rear region S3 is located behind the central region S1. The trailing edge of the rear region S3 defines the trailing edge of the absorbent article 1. The length of the back side region S3 in the front and rear direction L is longer than the length of the front side direction L of the central region S1.

In the central region S1, a wing 3 bulging outward in the width direction is formed. In the rear region S3, a hip flap 4 bulging outward in the width direction W is provided. The wing (3) and the hip flap (4) are adjacent to each other in the front-rear direction. The wings 3 and the hip flaps 4 extend outward in the width direction W from the outer edge of the absorbent core 31 in the central region S1.

The connecting portion of the wing constitutes a constriction portion whose outer edge is narrowed inward in the width direction. The constricted portion is provided at the front edge of the wing and the rear edge of the wing, and the outer edge of the wing is the two portions that are recessed inward in the widest direction (W). The front edge of the wing 3 defines the boundary between the central region S1 and the front region S2. The rear edge of the wing 3 defines the boundary between the central region S1 and the rear region S3. The front edge of the hip flap coincides with the rear edge of the wing, and the outer edge of the hip flap and the outer edge of the wing constitute constricted portions narrowed inward in the width direction. The outer edge 4E of the hip flap 4 has a waveform shape having a plurality of concave portions 4C recessed inward in the width direction.

The absorbent article 1 has a skin face sheet 10, a non-skin face sheet 20, and an absorbent body 30. The skin surface sheet 10 is provided on the skin-facing side T1 of the absorbent body 30. The skin facing sheet 10 has a topsheet 11 and a side sheet 12. The non-skinned cotton sheet 20 is provided on the skin non-opposed 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 side sheet 12 covers the outer edge of the topsheet 11 in the width direction W and extends outward in the width direction W than the topsheet 11. The side sheet 12 is disposed on the outer edge of the absorbent body 30 in the width direction W, the wing 3 and the hip flap 4. [

The absorber 30 is disposed at least in the central region S1 and the rear region S3. Further, the absorber 30 may extend from the central region S1 to the front region S2. The absorbent body 30 has an absorbent core 31 including an absorbent material that absorbs the liquid and a core wrap 32 surrounding the absorbent core 31. [ The core wraps 32 need only cover the absorbent core 31 at least on the side of the skin facing surface than the absorbent core 31. [

2, a bonding portion 60 is provided on the skin non-facing surface of the non-skin facing sheet 20 to bond the absorbent article to the undergarment S. As shown in Fig. The bonding portion 60 has a pressure-sensitive adhesive. The joining portion 60 includes a first joining portion 61 located forward of the low unit weight portion 41 to be described later, a second joining portion 62 located rearward of the low unit weight portion 41, A third joint 63 provided on the wing, and a fourth joint 64 provided on the wing. The first bonding portion 61 and the second bonding portion 62 are provided in a region overlapping with the absorber 30. The first joint portion 61 and the second joint portion 62 are spaced apart in the front-rear direction. The joining portion 60 will be described later in detail.

The " unit weight of the absorber " in this specification is measured by the following measuring method.

When the absorbent article 1 is sealed in a package or the like, the sample is taken out from the package, and the sample is allowed to stand in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 12 hours. In the case of the absorbent article packaged by the package, the package is opened, and the folded absorbent article is developed to measure the thickness and the area of the unit weight and the density to be measured. Then, the portion to be measured for unit weight and density is cut out from the absorbent article, and the weight of the cut portion is measured. Subsequently, a portion other than the absorber such as the topsheet and the backsheet is removed from the cut-out portion, and the weight of the absorber is measured. The unit weight is calculated on the basis of the weight of the absorber, the unit weight, and the area of the portion to be measured.

The " thickness of the absorber " in this specification is measured by the following measuring method. When the absorbent article 1 is sealed in a package or the like, the sample is taken out from the package, and the sample is allowed to stand in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 12 hours. In the measurement, the stretchable member of the absorbent article is stretched, not in a contracted state. Further, portions other than the absorber such as skin surface sheet and non-skin surface sheet other than the absorber are removed. Using a dial gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd., a specimen having a diameter of 10 mm and a size of 30 mm x 30 mm is prepared, and the thickness of the specimen is measured. The measuring instrument is adjusted so that the measured pressure on the specimen is 3 g / cm 2. Here, for the 10 samples, the above-described measurement was performed in each state, and the average value was taken as the thickness.

In this specification, the " length " is measured by the following measuring method. When the absorbent article 1 is sealed in a package or the like, the sample is taken out from the package, and the sample is allowed to stand in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH for 12 hours. Subsequently, the length of this state of the measurement target site is measured by using a spring metering (tape: vinyl chloride coated with glass fibers) manufactured by Shinwa Measurement Co., Ltd., along the measurement target site. Here, for the 10 samples, the above-described measurement was performed in each state, and the average value was taken as the length.

(2) Detailed structure of absorber

The absorbent body (30) has a low unit weight portion (41). The unit weight of the absorbent material in the low unit weight portion 41 is lower than the unit weight of the absorbent material in the center portion in the longitudinal direction of the central region. The " low unit weight portion " is a region of the absorbent core 31 having a lower unit weight than that of the absorbent core 31 positioned at the center in the longitudinal direction of the central region, or a region having no absorbent core 31 it means. Thus, the " low unit weight portion " is a concept in which the unit weight of the absorbent core 31 includes a zero region. The core wrap 32 may cover the entire absorbent core 31 over the low unit weight portion 41 even when the "low unit weight portion 41" is an area having no absorbent core 31 . 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.

The low unit weight portion 41 becomes a boundary line in which the rigidity of the absorber 30 is changed. Therefore, the low unit weight portion 41 corresponds to a region where the absorber 30 is easily deformed. The low unit weight portion 41 extends in the width direction W and is configured such that the absorbent article 1 can be bent in the thickness direction T. [ The low unit weight portion 41 extends from one end of the absorber 30 to the other end in the width direction W. [

In the present embodiment, the low unit weight portion 41 has a curved shape in which the center of the low unit weight portion 41 of the low unit weight portion 41 protrudes rearward. More specifically, the center of the widthwise direction W of the low-unit weight portion 41 is located behind the outer edge of the low-unit weight portion 41. The length of the low unit weight portion 41 in the forward and backward directions L may or may not be constant. The low-unit weight portion 41 of the present embodiment has a change in the front-rear direction position in the width direction, a line connecting the forward and backward centers 41CL of the low-unit weight portion 41, The position in the front-rear direction is changed, and the center of the width direction W is curved protruding rearward. The front end edge 41F of the low unit weight portion 41 is the front end edge of the whole low unit weight portion and the front end edge of the low unit weight portion at the outer edge 41E of the low unit weight portion 41. [ The rear end edge 41R of the low unit weight portion 41 is the trailing edge of the entire low unit weight portion and the low unit weight portion 41 at the center of the widthwise direction W of the low unit weight portion 41, .

The low unit weight portion 41 is provided on the rear side from the center of the central region S1 (wing 3) in the anteroposterior direction L and on the front side than the rear edge of the absorber 30. At least a part of the low unit weight portion 41 is provided at the boundary between the central region S1 and the rear region S3. The low unit weight portion 41 may be provided at least at a part of the boundary between the central region S1 and the rear region S3 and may not be provided over the entire boundary. At least a part of the low unit weight portion 41 is formed so that the outer edge of the hip flap 4 and the trailing edge of the wing 3 which is the constricted portion 5 narrowed toward the inside in the width direction 4) or in the region extending outward in the width direction from the constriction 5. The central region S1 is caught by the legs of the wearer and is easily deformed by a force or the like directed from the outside of the width direction W to the inside in the width direction. Since the low unit weight portion 41 is provided in the region extending outward in the width direction from the constricted portion 5 or the constricted portion 5, the deformation of the central region S1 by the low unit weight portion 41 It is possible to prevent the deformation from propagating to the hip flap 4. [ Therefore, it is possible to suppress the occurrence of warpage and wrinkles of the hip flap 4, thereby suppressing discomfort and leakage of excretion when worn.

At least a part of the concave portion 4C of the plurality of concave portions 4C of the hip flap 4 is disposed in a region behind the rear end edge 41R of the low unit weight portion 41. [ The deformation of the low unit weight portion 41 is divided by the concave portion 4C because the concave portion 4C is arranged in the region behind the rear end edge 41R of the low unit weight portion 41, It is possible to suppress propagation to the rear side of the concave portion 4C and suppress occurrence of folding or wrinkling on the entire hip flap 4. [ Therefore, it is possible to suppress the occurrence of warpage and wrinkles of the hip flap 4, thereby suppressing discomfort and leakage of excretion when worn.

(3) folding of the absorbent article

The absorbent article 1 is folded from the fold line FL1 as a starting point before use. The folding line FL1 is a line for folding the skin-facing side of the absorbent article 1 to face each other, and is formed in the folded state. The folding line FL1 forms a collapsible magnetic field which is folded with respect to the wearer.

Fig. 6 is a schematic perspective view of the absorbent article 1 in a deployed state in which the absorbent article 1 folded on the fold line is developed. In the absorbent article shown in Fig. 6, the region overlapping with the low-unit weight portion 41 and the low-unit weight portion 41 is raised toward the wearer by the contraction of the elastic member 91 constituting the leak-barrier cuff. 7 is a schematic enlarged view of the low unit weight portion 41 shown in Fig. FIG. 7A is a stretched state in which the absorbent article is deployed, and the elastic member 91 is stretched, and FIG. 7B is a retracted state in which the absorbent article is deployed and the elastic member 91 contracts.

The folding line FL1 is provided so that the low-unit weight portion 41 is caused to bulge toward the wearer by the contraction of the elastic member 91 in a deployed state in which the absorbent article is deployed. The lower unit weight portion 41 is provided with the folding line so that the lower unit weight portion 41 protrudes toward the wearer in the unfolded state and therefore the joining portion 60 such as the first joining portion 61 and the second joining portion 62 The low unit weight portion 41 is difficult to be disposed between the underwear S and the joining portion 60. Therefore, The lower unit weight portion 41 suppresses the problem that the joining portion 60 is joined to an unintended position or the joining portion 60 is bent without hindering the joining between the underwear S and the joining portion 60 And it is easy to maintain the bonding state by the bonding portion 60. Therefore, it is possible to maintain the bonding position of the absorbent article 1 and to suppress discomfort and leakage of excretion when worn.

The folding line FL1 extends in the width direction W. The fold line FL1 is provided over the low unit weight portion and the absorbent core adjacent to the low unit weight portion. The folding line FL1 is spaced apart from the center 41CL of the low unit weight portion 41 in the front-rear direction in the front-rear direction. At least a part of the folding line FL1 is provided at a position which does not coincide with the longitudinal center 41L of the low unit weight portion 41. [ The folding line FL1 may be provided so as to be at least partly spaced apart from the front and rear center 41CL of the low unit weight portion 41 and partially overlapped with the front and rear center 41CL . In the low-unit weight portion 41, a folding line FL1 and an adjacent region adjacent to the folding line in the forward and backward directions L are formed. The adjacent region is composed of a front adjacent region 411 between the absorbent core 31 and the folding line FL1 positioned forward of the low unit weight portion 41 and an absorbing region 411 located behind the low unit weight portion 41 A rear adjacent region 412 between the core 31 and the fold line FL1 is provided.

Since the folding line FL1 is the folded with respect to the wearer, the adjacent region adjacent to the folding line FL1 rises toward the wearer with the folding line FL1 as a starting point in the state shown in Figs. 6 and 7B. At least a part of the folding line FL1 does not coincide with the front and rear center 41CL of the low unit weight portion 41 but is offset in the front and rear direction with respect to the center of the low unit weight portion 41 in the longitudinal direction. In the region where the fold line FL1 is shifted with respect to the center of the low unit weight portion in the forward and backward directions, the length of one of the adjacent regions (the rear adjacent region 412 in the present embodiment) (The front adjacent region 411 in the present embodiment) in the back-and-forth direction L. The length of the one adjacent region in the forward and backward direction that is raised in the deployed state of the absorbent article is longer than that of the adjacent region of the other side,

(4) Mounting manner of the absorbent article

Next, a mounting manner of the absorbent article constructed as described above to the undergarment S will be described. When the absorbent article is attached to the undergarment, the wearer first expands the absorbent article 1 in the folded folded state. As shown in Fig. 6, in the deployed state, the low-unit weight portion 41 contracts in the forward and backward direction L by the contraction of the elastic member 91. [ Then, the wearer joins the joined portion of the absorbent article in the unfolded state to the undergarment. At this time, the underwear S is detached from the body, specifically, disposed below the crotch of the wearer. 8 is a schematic cross-sectional view of the absorbent article in the mounted state, taken along the line C-C in Fig. 8A shows a state before the absorbent article 1 in a deployed state is joined to the undergarment and the undergarment is pulled up. The absorbent article 1 is joined to the undergarment through the first joint portion 61 and the second joint portion 62 and the lower end portion of the absorbent article 1 is held between the first joint portion 61 and the second joint portion 62 The unit weight portion 41 is contracted in the front-rear direction L. Next, the wearer pulls up the absorbent article shown in Fig. 8A, and places the undergarment S and the absorbent article 1 around the waist of the wearer. Fig. 8B shows a state after pulling up the underwear.

When the undergarment S and the absorbent article 1 are arranged around the waist of the wearer, the undergarment S expands to conform to the wearer's body. At this time, the shrunken region of the low-unit weight portion 41 is extended with the extension of the underwear S, and the absorbent article 1 is deformed following the deformation of the undergarment. Rear direction L of the first bonding portion 61 and the second bonding portion 62 in the post-mounting state is smaller than the distance between the first bonding portion 61 and the second bonding portion 62 in the state before mounting long. The first joint portion 61 and the second joint portion 62 are difficult to fall off from the underwear at the time of mounting and are liable to maintain the fixed position before pulling up the underwear. It is possible to restrain the absorbent article 1 from being unintentionally bent or displaced at the time of wearing, and it is possible to suppress discomfort at the time of wearing and leakage of excretion.

(5) leak-proof cuff

The absorbent article 1 has a pair of leak-barrier cuffs. The leak-barrier cuff is a standing golfer capable of standing on the wearer's side. The leak-barrier cuff comprises a side sheet 12 and an elastic member 91. The inner edge 12E of the side sheet 12 is folded outward in the width direction W along the forward and backward direction L. [ Between the folded back side sheets 12, an elastic member 91 that stretches and shrinks in the forward and backward directions L is disposed. The inner edge 12E of the side sheet 12 is not bonded to the topsheet 11. The inner edge 12E and the elastic member 91 of the side sheet 12 constitute a standing leak-proof cuff. The absorbent article has a shrinking region which contracts in the longitudinal direction by the elastic member (91). The shrinkage region is a region in which the elastic members 91 are arranged in a stretched state and is a region to which a force for shrinking in the longitudinal direction is applied by the elastic member. The shrinkage region is a concept excluding the region where the elastic member is arranged in a non-stretched state. The elastic member 91 in Fig. 1 shows only the shrinkage region, and does not show the region where the elastic member is disposed in the non-stretched state. Therefore, the range of the elastic member 91 in Fig. 1 coincides with the range of the shrinkage region. The shrinking region is disposed over the central region S1 in the forward and backward directions L. [

The elastic members 91 constituting the leak-barrier cuffs are arranged in a region extending outward in the width direction from the low-unit weight portion 41 or the low-unit weight portion 41 in the forward and backward directions L. More specifically, the front end edge 91F of the elastic member 91 is located forward of the front end edge 41F of the low unit weight portion 41, and the rear end edge 91R of the elastic member 91 is located at the lower end Is positioned behind the rear edge 41R of the unit weight portion 41. [ The region extending outward in the width direction from the low unit weight portion 41 means a region extending from the region between the front end edge 41F of the low unit weight portion 41 and the rear end edge 41R of the low unit weight portion 41 Direction. The unit weight portion 41 is lower in unit weight than the center of the central region in the longitudinal direction, and is easily deformed. The low unit weight portion 41 has a unit weight different from that of the absorbent core 31 of the adjacent central region S1 (or the rear region S3), and the rigidity is changed. Therefore, the low unit weight portion 41 is easily deformed from the boundary of the adjacent absorbent core. In addition, the elastic member 91 extends from the low-unit weight portion 41 or the low-basis weight portion 41 to a region extending outward in the width direction. With this configuration, the length of the low-unit weight portion 41 in the front-rear direction is shortened in accordance with the contraction of the elastic member 91, and the low-unit weight portion 41 is contracted in the front-rear direction . Accordingly, the shrunken region of the low-unit weight portion 41 is extended with the extension of the underwear S at the time of attachment, and the absorbent article 1 can be deformed following the deformation of the undergarment. The first joint portion 61 and the second joint portion 62 are difficult to fall off from the underwear at the time of mounting and are liable to maintain the fixed position before pulling up the underwear. It is possible to restrain the absorbent article 1 from being unintentionally bent or displaced at the time of wearing, and it is possible to suppress discomfort at the time of wearing and leakage of excretion.

(6) a non-bonded region between the skin face sheet and the absorbent body and a bonded region between the non-skin face sheet and the absorbent body

The skin surface sheet 10 is not bonded to the member provided on the skin non-facing surface side with respect to the skin surface sheet 10 in the region overlapping with the low- The member provided on the skin non-facing surface side than the skin surface sheet 10 can be exemplified by an absorber and a second sheet. More specifically, in the non-bonded region 46 shown in Fig. 1, the skin surface sheet 10 and the core wraps 32 constituting the absorbent body 30 are not bonded. In Fig. 1, the non-joined region 46 is indicated by an area surrounded by a dashed line. The non-bonding region 46 may extend at least from one end of the low-unit weight portion 41 in the width direction W to the other end. Instead of this, the non-joined region 46 may not extend to both ends of the low-unit weight portion 41 in the width direction W. Since the skin surface sheet in the low unit weight portion 41 is not bonded to the member provided on the skin non-facing surface side with respect to the skin surface sheet, when the low-unit weight portion 41 is deformed by the elastic member to shrink, So that the cotton sheet is easily deformed to bulge to the wearer's side.

The non-skin face sheet 20 is bonded to a member provided on the skin-facing face side of the non-skin face sheet 20 in the region overlapping with the low- More specifically, the non-skin facing sheet 20 is bonded to the core wrap constituting the absorbent body. Since the skin surface sheet 10 and the absorbent body 30 are not bonded together and the non-skin face sheet 20 and the absorbent body 30 are bonded to each other, the rigidity of the skin- Unit weight portion 41 is likely to rise toward the skin-facing surface side when the lower-unit weight portion 41 is deformed to contract by the elastic member. The low unit weight portion 41 can maintain the bonding position of the absorbent article without hindering the bonding between the underwear and the joining portion, and it is possible to further suppress discomfort at the time of wearing and leakage of the excrement.

(7)

The first joining portion 61 is disposed forward of the second joining portion 62 and forward of the low unit weight portion 41. The second joining portion 62 is disposed so as to be spaced apart from the first joining portion 61 in the forward and backward directions L. [ The second joint portion (62) is disposed behind the low unit weight portion (41). Since the first joint portion 61 and the second joint portion 62 are disposed with the low unit weight portion 41 interposed therebetween, when the state changes from the state before the lifting up to the state after the lifting, Even if the distance between the first bonding portion 61 and the second bonding portion 62 is pulled down, the low unit weight portion 41 is elongated and the bonding between the first bonding portion 61 and the second bonding portion 62 . The rear end edge of the absorbent article is bent toward the skin facing surface or the position of the rear region of the absorbent article is shifted in the width direction when the absorbent article is attached Problems can be suppressed. Thereby, it is possible to suppress discomfort at the time of wearing and leakage of excretion.

The low unit weight portion 41 is arranged in an area which does not overlap the joining portion 60. [ According to this configuration, when the low-unit weight portion 41 is contracted due to the contraction of the elastic member 91, the joining portions 60 can be prevented from sticking to each other. It is possible to prevent the joining portion 60 from being joined to a position where the joining portion 60 is not located and to maintain the joining state of the absorbent article 1 and the undergarment S via the joining portion 60. [ It is possible to restrain the absorbent article from being unintentionally bent or shifted at the time of wearing, and it is possible to further suppress discomfort at the time of wearing and leakage of excretion.

At least a part of a region extending in the width direction from the low unit weight portion 41 is disposed between the third bonding portion 63 and the fourth bonding portion 64. [ Therefore, even if the distance between the third bonding portion 63 and the fourth bonding portion 64 is pulled down with the extension of the undergarment, the low unit weight portion 41 is stretched and the third bonding portion 63 The bonding of the fourth bonding portion 64 can be maintained. It is possible to prevent the third joint 63 located in the rear region of the absorbent article from falling off from the undergarment so that the hip flap 4 is bent toward the skin facing surface at the time of fitting or the hip flap 4 is positioned in the width direction It is possible to suppress the problem of misalignment. Thereby, it is possible to suppress discomfort at the time of wearing and leakage of excretion.

The rear end edge of the second joint portion 62 is disposed behind the shrinkage region which contracts in the forward and backward direction by the elastic member 91. [ The second joint portion 62 positioned rearward than the shrinking region is less likely to shrink due to shrinkage of the elastic member 91 in its deployed state and is easy to maintain the joint state with the undergarment. Further, when the underwear is pulled up, the shrinking region expands with the deformation of the undergarment, and it is easy to maintain the bonding state of the underwear with the second joining portion 62 located behind the shrinking region. Therefore, it is possible to maintain the bonding position of the absorbent article and to further suppress discomfort at the time of wearing and leakage of excretion.

The front end edge 63F of the third joint portion 63 and the rear end edge 63R of the third joint portion 63 are disposed behind the shrinkage region which contracts in the forward and backward direction by the elastic member. The third joint located behind the shrinkage area is less likely to shrink due to shrinkage of the elastic member in its deployed state and is easy to maintain a bonded state to the undergarment. Further, since the shrinkage region and the third joint portion are spaced apart in the front-rear direction, when the shrinkage region is elongated as the underwear is deformed, it is easy to maintain the bonding state of the third joint portion and the undergarment. The back flap of the hip flap can be suppressed from being generated and wrinkles can be suppressed.

The fourth joining portion 64 is spaced apart from the low unit weight portion 41 and disposed forward of the front end edge 41F of the low unit weight portion 41. [ The fourth joint portion 64 is joined to the crotch portion of the undergarment in a mounted state. The crotch part of the underwear is composed of a double cloth or the like, and is harder to stretch because of its higher rigidity than the area of the underwear that is put on the buttocks. The crotch part of the undergarment is formed such that the first joint part 61 and the fourth joint part 64 of the absorbent article 1 are joined to each other and sandwich the absorbent article 1 in the thickness direction T, Is difficult to elongate as compared with the area where it is placed. That is, the region where the fourth junction 64 is bonded is a region that is difficult to elongate. On the other hand, the region of the undergarment that is put on the buttocks is a region that is easier to stretch than the crotch portion of the undergarment. Since the low unit weight portion 41 is arranged behind the fourth joining portion 64, the low unit weight portion 41 is liable to elongate in the front-rear direction with the elongation of the region opposed to the buttocks of the undergarment, The absorbent article is more likely to be deformed following the deformation of the undergarment.

(8)

The absorbent article (1) has a pressed portion formed by at least compressing the absorbent core (31) in the thickness direction. The crimping portion has a front crimping portion (81) and a rear crimping portion (82). The front squeezing portion 81 and the rear squeezing portion 82 are spaced apart in the front-rear direction. At least a part of the front side pressing part 81 and at least a part of the rear side pressing part 82 are provided in a range in the longitudinal direction of the contracting area of the elastic member 91. [ The front side crimping portion 81 is not disposed in the low unit weight portion 41 in the longitudinal direction. In addition, the rear side crimping portion 82 is not provided in the low unit weight portion 41. According to such a configuration, the area on the front side of the low-unit weight portion 41 is increased in rigidity by the front-side pressing portion, is not easily deformed by the contractive force of the elastic member, and the absorbent body is easily held in a flat state. Likewise, the region on the rear side of the low-unit weight portion 41 has a higher rigidity by the rear-side pressing portion, is not easily deformed by the contractive force of the elastic member, and is easily held in a flat state. Since the absorbent body is easily held in a flat state, the absorbent body is brought into contact with the skin of the wearer with a smooth surface, and occurrence of discomfort during mounting can be suppressed. On the other hand, since the compression unit is not formed over the whole area in the front-rear direction, the low-unit weight portion 41 is easily deformed to shrink due to shrinkage of the elastic member, and can be deformed to elongate with extension of the undergarment. It is possible to suppress the collapse of the absorber and maintain a good feeling of use even if the shrinking force of the elastic member is high and the shrinkage amount of the low unit weight portion 41 is large. The follow-up performance of the undergarment of the absorbent article can be improved.

(9) Modifications

Next, an embodiment related to a modification will be described with reference to Figs. 9 and 10. Fig. In the description of the modified embodiment, the same reference numerals are used for the same constituent elements as those in the above-described embodiment, and a description thereof is omitted. Fig. 9 is a plan view of the absorbent article related to the modified example, and Fig. 10 is a rear view of the absorbent article related to the modified example. The absorbent article 1A according to the modified example is provided with a plurality of low unit weight portions 41. [ The plurality of low-unit weight portions 41 are arranged at intervals in the front-rear direction. It is sufficient that the folding line FL1 is provided in at least a part of the low unit weight portion and the absorbent article 1A according to the modification example is provided at the most forward position Folding line FL1 is provided on the low-unit weight portion 41 which is provided on the lower unit weight portion 41 as shown in Fig.

The second joint portion 62 provided in the rear side region S3 is divided in the forward and backward directions L. [ Each of the second joining portions 62 is disposed in a region that does not overlap the low-unit weight portion 41. The plurality of low-unit weight portions 41 are provided in the range of the shrinking region of the elastic member 91, and contracted by the shrinkage of the elastic member 91. Since the plurality of low-unit weight portions 41 are provided within the range of the shrinking region of the elastic member 91, the shrinking amount (length in the forward-backward direction) of the low-unit weight portion 41 becomes large, . In addition, since a plurality of low unit weight portions 41 are provided, it is possible to provide the shrunken portion by the low unit weight portion 41 at a plurality of locations, so that the absorbent article follows the plural locations of the undergarment And the joining portion 60 is less likely to be peeled off from the undergarment.

Although the present invention has been described in detail with reference to the above embodiments, it is apparent 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 present invention.

The entire contents of Japanese Patent Application No. 2016-67995 filed on March 30, 2016 are incorporated herein by reference.

Industrial availability

It is possible to provide an absorbent article capable of restraining discomfort at the time of wearing and suppressing leakage of excretion.

1: absorbent article 10: skin surface sheet 11: top sheet 12: side sheet 20: non-skin surface sheet 30: absorbent 31: absorbent core 32: core wrap 41: The first bonding portion 62 the second bonding portion 63 the third bonding portion 64 the fourth bonding portion 81 the front side crimping portion 82 the rear side crimping portion FL1 the folding line L the forward and backward directions W the width direction, T: Thickness direction, S1: Central region, S2: Front side region, S3:

Claims (9)

Rear direction and the width direction orthogonal to each other,
A central region disposed in the crotch of the wearer,
A rear region located on the rear side of the central region,
An absorber disposed in the central region and the rear region,
An elastic member extending and retracting in the front-
An abutment portion provided on the skin non-facing surface of the absorbent article and joined to the undergarment,
The absorbent article having a folding line extending in the width direction and folded so that the skin-facing surfaces of the absorbent article are opposed to each other,
Wherein the absorber has a low unit weight portion provided at a boundary between the central region and the rear region and extending in the width direction,
The unit weight of the lower unit weight portion is lower than the unit weight of the central portion of the central region in the front-
The joining portion has a first joining portion located forward of the low unit weight portion and a second joining portion located rearward of the low unit weight portion,
The elastic member extends over a region extending from the low-unit weight portion or the low-basis weight portion to the outside in the width direction,
Wherein the folding line is provided in the low unit weight portion such that the low unit weight portion rises to the wearer side due to the contraction of the elastic member in a deployed state in which the absorbent article is deployed. The absorbent article as set forth in claim 1, wherein at least a part of the fold line is provided at a position that does not coincide with a center of the low unit weight portion in the longitudinal direction. The absorbent article according to any one of claims 1 to 3, further comprising: a skin surface sheet provided on a skin-facing surface side of the absorbent body;
Wherein the skin surface sheet is not bonded to a member provided on the skin non-facing surface side with respect to the skin surface sheet in a region overlapping with the low unit weight portion. The absorbent article as set forth in claim 3, further comprising a non-skin facing sheet provided on the skin non-facing surface side,
The skin surface sheet is not bonded to the absorbent body in a region overlapping with the low unit weight portion,
Wherein the non-skin face sheet is bonded to the absorbent body in a region overlapping with the low-unit weight body. The absorbent article as set forth in any one of claims 1 to 4, wherein the low unit weight portion is disposed in an area which does not overlap the abutment portion. The absorbent article as set forth in any one of claims 1 to 5, wherein a trailing edge of the second joint is disposed behind the shrinkage area contracted by the elastic member in the anteroposterior direction. 7. The stapler according to any one of claims 1 to 6, further comprising a hip flap bulging outward in the width direction in the rear region,
Wherein the abutment has a third abutment provided on the hip flap,
And the third joint is disposed behind the shrinkage region contracted by the elastic member in the anteroposterior direction. The hood device according to any one of claims 1 to 7, further comprising: a hip flap bulging outward in the width direction in the rear region;
And a wing which is adjacent to the hip flap and bulges outward in the width direction in the central region,
Wherein the lower unit weight portion is provided with an outer edge of the hip flap and an outer edge of the wing are provided in a constricted portion narrowed inward in the width direction or in a region extending outward in the width direction from the constricted portion, . The folding device according to any one of claims 1 to 8, further comprising a hip flap bulging outward in the width direction in the rear region,
Wherein the outer edge of the hip flap has a concave portion recessed inward in the width direction,
And the concave portion is disposed in a region behind the trailing edge of the low unit weight portion.

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