CN113226237A

CN113226237A - Absorbent article

Info

Publication number: CN113226237A
Application number: CN201880100502.8A
Authority: CN
Inventors: 工藤悦子
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2021-08-06
Anticipated expiration: 2038-12-28
Also published as: WO2020136917A1; CN113226237B

Abstract

An absorbent article according to one embodiment includes a front-back direction, a width direction, a front body surrounding region, a rear body surrounding region, a crotch region, an absorbent core, an absorbent body, a front outer cover, a rear outer cover, and an elastic member, wherein the width direction is orthogonal to the front-back direction, the crotch region is disposed between the front body surrounding region and the rear body surrounding region, the absorbent body includes the absorbent core and is disposed across the front body surrounding region and the rear body surrounding region, the front outer cover is disposed on a non-skin surface side of the absorbent body in the front body surrounding region, the rear outer cover is disposed on a non-skin surface side of the absorbent body in the rear body surrounding region, and the elastic member is stretchable in the width direction in the front body surrounding region independently of the front outer cover. The elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side. The rear end edge of the curved elastic member is disposed on the front side of the rear end edge of the front outer cover in the center in the width direction.

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

Conventionally, an absorbent article having a curved elastic member that curves from the center in the width direction to the outer side in the width direction toward the front side has been known (for example, see patent document 1).

The bending elastic member is disposed in the crotch region at the center in the width direction. Thereby, the absorbent core is pulled up to the front side (waist opening side) by contraction of the curved elastic member, and thus the absorbent core is pulled close to the body of the wearer.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 10-127687

Disclosure of Invention

However, in the absorbent article of patent document 1, the outer cover is less likely to adhere to the body of the wearer in the front body region, and the adhesiveness of the outer cover in the front body region is improved.

In view of the above, an absorbent article having improved conformability to the outer body in the front surrounding region is desired.

An absorbent article according to one aspect includes a front-back direction, a width direction, a front body surrounding region, a rear body surrounding region, a crotch region, an absorbent core, an absorbent body, a front outer cover, a rear outer cover, and an elastic member, wherein the width direction is orthogonal to the front-back direction, the crotch region is disposed between the front body surrounding region and the rear body surrounding region, the absorbent body includes the absorbent core and is disposed across the front body surrounding region and the rear body surrounding region, the front outer cover is disposed on a non-skin surface side of the absorbent body in the front body surrounding region, the rear outer cover is disposed on a non-skin surface side of the absorbent body in the rear body surrounding region, and is independent of the front outer cover, and the elastic member has stretchability in the width direction in the front body surrounding region. The elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side. The rear end edge of the curved elastic member is disposed on the front side of the rear end edge of the front outer cover in the center in the width direction.

An absorbent article according to one aspect includes a front-back direction, a width direction, a front body surrounding region, a rear body surrounding region, a crotch region, an absorbent core, an absorbent body, an outer cover, and an elastic member, the width direction being orthogonal to the front-back direction, the crotch region being disposed between the front body surrounding region and the rear body surrounding region, the absorbent body including the absorbent core and being disposed so as to straddle the front body surrounding region and the rear body surrounding region, the outer cover being disposed at least on the front body surrounding region and the rear body surrounding region on a non-skin surface side of the absorbent body, the elastic member having stretchability in the width direction in the front body surrounding region. The elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side. At least 1 of the 1 or more curved elastic members is disposed in a region not overlapping with the absorbent core.

Drawings

Fig. 1 is a front view of an absorbent article of an embodiment.

Fig. 2 is a plan view of the absorbent article of the embodiment.

Fig. 3 is a sectional view taken along the line a-a of the absorbent article shown in fig. 2.

Fig. 4 is a view for explaining the abdomen of the wearer.

Fig. 5 is a schematic plan view of an absorbent article 10 according to modification 1.

Fig. 6 is a schematic plan view of the front outer cover 20 of the absorbent article 10 according to modification 2.

Fig. 7 is a diagram for explaining the absorbent article according to modification 3 and modification 4.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be clear from the description of the present specification and the accompanying drawings.

An absorbent article according to one aspect includes a front-back direction, a width direction, a front body surrounding region, a rear body surrounding region, a crotch region, an absorbent core, an absorbent body, a front outer cover, a rear outer cover, and an elastic member, wherein the width direction is orthogonal to the front-back direction, the crotch region is disposed between the front body surrounding region and the rear body surrounding region, the absorbent body includes the absorbent core and is disposed across the front body surrounding region and the rear body surrounding region, the front outer cover is disposed on a non-skin surface side of the absorbent body in the front body surrounding region, the rear outer cover is disposed on a non-skin surface side of the absorbent body in the rear body surrounding region, and is independent of the front outer cover, and the elastic member is stretchable in the width direction in the front body surrounding region. The elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side. The rear end edge of the curved elastic member is disposed on the front side of the rear end edge of the front outer cover in the center in the width direction.

On the abdomen side of the wearer, a recess extending in the width direction is generally formed at the lower end of the abdomen. The recess at the lower end of the web portion is curved forward from the center in the width direction toward the outer side in the width direction. The depression at the lower end of the abdomen portion is usually located on the front side (waist opening side) with respect to the rear end edge of the front outer cover at the center in the width direction.

In this case, the curved elastic member is disposed so as to extend from the center in the width direction to the outer side in the width direction. Since the abdomen starts to bulge at a position above the depression of the abdomen (i.e., on the side of the waist opening), the front outer cover is pulled up by contraction of the curved elastic member so as to be attached to the bulge of the abdomen. This can improve the adhesiveness of the front outer cover.

According to a preferred aspect, at least 1 of the 1 or more curved elastic members may be disposed in a region not overlapping with the absorbent core.

The contraction force of the curved elastic member which does not overlap with the absorbent core is not hindered by the absorbent core having high rigidity. Since the contractive force of the curved elastic member can be maintained, the outer covering in the front waistline region can be pulled up and fit to the body of the wearer. This can improve the adhesion of the outer package in the front surrounding region.

An absorbent article according to one aspect includes a front-back direction, a width direction, a front body surrounding region, a rear body surrounding region, a crotch region, an absorbent core, an absorbent body, an outer covering, and an elastic member, wherein the width direction is orthogonal to the front-back direction, the crotch region is disposed between the front body surrounding region and the rear body surrounding region, the absorbent body includes the absorbent core and is disposed so as to straddle the front body surrounding region and the rear body surrounding region, the outer covering is disposed at least on the front body surrounding region and the rear body surrounding region on a non-skin surface side of the absorbent body, and the elastic member is stretchable in the width direction in the front body surrounding region. The elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side. At least 1 of the 1 or more curved elastic members is disposed in a region not overlapping with the absorbent core.

Thus, the contraction force of the curved elastic member which does not overlap with the absorbent core is not hindered by the absorbent core having high rigidity. Since the contractive force of the curved elastic member can be maintained, the outer covering in the front waistline region can be pulled up and fit to the body of the wearer. This can improve the adhesion of the outer package in the front surrounding region.

In addition, as described in patent document 1, in the case where all the bending elastic members are disposed in the region overlapping the absorbent core, the absorbent core is likely to be reduced in the width direction. Thus, longitudinal wrinkles occur in the absorbent core, and the rigidity of the absorbent core sometimes becomes high. In this case, the absorbent core may not be easily deformed along the wearer's body, and the fit of the outer covering in the front waistline region may be reduced. In this case, by disposing at least 1 of the 1 or more curved elastic members in the region not overlapping the absorbent core, it is possible to suppress an increase in rigidity of the absorbent core due to the curved elastic portion, and to improve the adhesiveness of the outer covering body in the front surrounding region.

According to a preferred aspect, the outer cover may be a front outer cover and a rear outer cover, the front outer cover may be disposed on the non-skin surface side of the absorbent body in the front peripheral region, and the rear outer cover may be disposed on the non-skin surface side of the absorbent body in the rear peripheral region, and may be independent of the front outer cover, and a rear end edge of the bending elastic member may be disposed on the front side of a rear end edge of the front outer cover in the center in the width direction.

In this case, the curved elastic member is disposed so as to extend from the center in the width direction to the outer side in the width direction. Since the abdomen starts to bulge at a position above the depression of the abdomen (i.e., on the side of the waist opening), the front outer cover is pulled up by contraction of the curved elastic member so as to be attached to the bulge of the abdomen. This can improve the adhesiveness of the front outer cover. According to a preferred aspect, at least 1 of the 1 or more curved elastic members may extend continuously in the width direction so as to extend across a center in the width direction.

Thus, the outer covering body of the front waistline region can be brought into contact with the body at the center of the abdomen of the wearer by the curved elastic member continuously extending in the width direction.

According to a preferred aspect, the absorbent article may be provided with side joint portions formed by joining side end portions of the front body surrounding region and the rear body surrounding region, and the curved elastic member may be disposed on the side end portions of the front body surrounding region rearward with respect to a range from a front end edge of the side joint portions to 20% of an entire region in a front-rear direction with respect to the side joint portions.

At the side end portion of the front surrounding area, the depression of the lower end of the abdomen portion is generally located more to the rear side than the range from the front end edge of the side portion joint portion to 20% of the entire area in the front-rear direction with respect to the side portion joint portion. Therefore, the curved elastic member can be disposed in the recess at the lower end of the abdomen at the side end of the front body surrounding region. Thus, the outer covering can be attached to the body even at the side end portion of the outer covering in the front body peripheral region.

According to a preferred aspect, all of the curved elastic members extending continuously in the width direction may be disposed in a region not overlapping with the absorbent core.

Thereby, the contraction force of all the curved elastic members continuously extending in the width direction can be maintained without being hindered by the absorbent core having high rigidity. Further, the contraction force can be secured as compared with the case where the curved elastic member does not extend continuously, and therefore the outer covering body in the front waistline region can be made to fit the body more closely.

According to a preferred aspect, the elastic member may include a linear elastic member linearly extending in the width direction, and the linear elastic member may be disposed on a front side of the curved elastic member.

When the curved elastic member is disposed along the depression at the lower end of the abdomen portion, the linear elastic member disposed on the front side (waist opening side) of the curved elastic member is disposed at the bulge portion of the abdomen portion. This allows the outer covering body of the front waistline region to be fitted to the body at the bulge portion of the abdomen.

According to a preferred aspect, the elastic member may include a linear elastic member linearly extending in the width direction, and the linear elastic member may be disposed rearward of a most forward portion of front end edges of the curved elastic members and forward of a front end edge of the absorbent core.

Thereby, the linear elastic member is easily pulled up by the curved elastic member. Therefore, the outer covering body in the front girth region can be pulled up by contraction of the linear elastic member in addition to contraction of the curved elastic member, and can be attached to the body. Further, since the linear elastic member is disposed in a region not overlapping the absorbent core, the contraction force of the linear elastic member can be maintained without being hindered by the absorbent core having high rigidity.

According to a preferred aspect, at least one of the linear elastic member and the curved elastic member may overlap in a thickness direction.

Since the curved elastic member needs to be arranged so as to be curved, the curved elastic member is less likely to be arranged than the linear elastic member, and the contraction force is less likely to be controlled. Therefore, the contraction force of the region in which the curved elastic member is arranged can be easily adjusted by the linear elastic member which is easy to control, and the outer covering body in the front waistline region can be appropriately bonded to the body.

According to a preferred aspect, the absorbent main body may include a sheet having liquid impermeability, and a front end edge of the sheet may be located on a front side of the curved elastic member in the center in the width direction.

By bringing the liquid-impermeable sheet into close contact with the body of the wearer by contraction of the curved elastic member, the excrement is less likely to move to the front side of the curved elastic member, and front leakage of the excrement can be suppressed. Further, when the wearer lies on his/her stomach, the front edge of the liquid-impermeable sheet is in close contact with the body due to the bulge in the abdomen. This can suppress front leakage of excrement when the wearer is lying on his/her stomach.

According to a preferred aspect, no joining member may be provided in a region of the absorbent main body that overlaps with the curved elastic member in the thickness direction.

This can suppress an increase in rigidity of the absorbent main body overlapping the bending elastic member in the thickness direction, and the contraction of the bending elastic member is not hindered by the absorbent main body. Therefore, the reduction in the contraction force in the width direction of the curved elastic member can be suppressed, and therefore the outer covering body in the front waistline region can be attached to the body.

According to a preferred aspect, the absorbent article may include a skin surface sheet positioned on the skin surface side of the absorbent core, the skin surface sheet may include a front surface sheet and a pair of side sheets covering both outer side portions of the front surface sheet, the pair of side sheets may respectively form leakage-proof gathers, the leakage-proof gathers may include contracted portions raised by contraction of leakage-proof elastic members extending in the front-rear direction, and the curved elastic members may be arranged on the front side of the front end edges of the contracted portions.

The outer package body in the front skirt region is lifted up by contraction of the bending elastic member, and generation of wrinkles due to contraction in the front-rear direction of the contracted portion can be suppressed. This ensures a space for receiving excrement.

According to a preferred aspect, the absorbent article may have a skin surface sheet disposed closer to the skin surface side than the absorbent core, the skin surface sheet may have a front surface sheet and a pair of side sheets covering both outer sides of the front surface sheet, the pair of side sheets may respectively form leakage-proof gathers, the leakage-proof gathers may have contracted portions raised by contraction of leakage-proof elastic members extending in the front-back direction, and at least any one of the 1 or more curved elastic members may be disposed so as to overlap the contracted portions in the thickness direction.

The leakage preventing wrinkles are easily expanded to the outside in the width direction by the expansion and contraction of the bending elastic member and are lifted up to the front side. Therefore, the leakage preventing wrinkles can be prevented from falling down to the inside in the width direction or from being excessively pulled to the inside in the front-rear direction by the contraction of the contraction portion. This ensures a space for receiving excrement. Further, since the body circumference is continuous with the concavity of the thigh (Japanese: foot ぐり), the region contracted by the curved elastic member and the contracted portion can be continuous along the concavity, and therefore the absorbent article can be stably fitted to the body of the wearer from the crotch region to the front circumferential region.

According to a preferred aspect, the elastic member may have a laminated (resurrectioned) elastic member extending in the width direction so as to overlap the absorbent core in a thickness direction, the laminated elastic member not extending to a center of the absorbent core in the width direction.

The external body in the front waistline region can be attached to the body by increasing the contraction force in the width direction by the laminated elastic member. Further, since the laminated elastic member does not extend from one end to the other end in the width direction of the absorbent core, the absorbent core can be suppressed from contracting in the width direction, and the absorption area can be ensured.

According to a preferred aspect, the plurality of bending elastic members may be arranged in the front-rear direction, the plurality of bending elastic members may include a front bending elastic member arranged most forward in the front-rear direction and a rear bending elastic member arranged most rearward in the front-rear direction, the plurality of bending elastic members may include a bending elastic region, the bending elastic region may be a region located between the front bending elastic member and the rear bending elastic member in the front-rear direction, and the bending elastic region may include a 1 st side region located at an outermost side in the width direction, a 1 st central region located at an innermost side in the width direction, and an intermediate region located between the 1 st side region and the 1 st central region in the width direction, in a case where a region from a center in the width direction of the front enclosure region to a side edge in the width direction of the front enclosure region is divided into 3 parts in the width direction, the 1 st side region has a maximum length in the front-rear direction longer than a maximum length in the front-rear direction of the 1 st center region.

With respect to the depression at the lower end of the abdomen portion, the length in the front-rear direction of the depression at the outer side in the width direction is longer than the length in the front-rear direction of the depression at the center in the width direction. Therefore, the arrangement in the front-rear direction of the bending elastic member can be arranged in accordance with the depression of the abdomen, and the outer covering in the front waistline region can be made to fit the depression of the abdomen.

According to a preferred aspect, a difference between a maximum length and a minimum length of the bending elastic region in the front-rear direction of the middle region may be larger than a difference between a maximum length and a minimum length of the bending elastic region in the front-rear direction of the 1 st side region, and may be larger than a difference between a maximum length and a minimum length of the bending elastic region in the front-rear direction of the 1 st center region.

The difference between the maximum length and the minimum length in the front-rear direction of the concavity of the lower end of the abdomen portion generally becomes maximum in the middle region. Therefore, the arrangement in the front-rear direction of the bending elastic member can be arranged in accordance with the depression of the abdomen, and the outer covering in the front waistline region can be made to fit the depression of the abdomen.

According to a preferred aspect, the length of the front end edge of the most front side and the rear end edge of the most rear side in the front-rear direction of the rear curved elastic member in the front-rear direction may be shorter than the length of the front end edge of the most front side and the rear end edge of the most rear side in the front-rear direction of the front curved elastic member in the front-rear direction.

The change in the front-rear direction of the lower side (rear side) of the depression of the lower end of the abdomen portion is smaller than the change in the front-rear direction of the upper side (front side) of the depression of the lower end of the abdomen portion. Therefore, the front bending elastic member can be disposed in accordance with the upper end of the depression in the abdomen, and the rear bending elastic member can be disposed in accordance with the lower end of the depression in the abdomen, so that the exterior body in the front surrounding region can be brought into closer contact with the depression in the abdomen.

According to a preferred aspect, in the 1 st central region, the front bending elastic member may be disposed rearward of a range from a front end edge of the side portion joint portion to 60% of an entire region in a front-rear direction with respect to the side portion joint portion.

In the 1 st central region, the depression at the lower end of the abdomen portion is located more to the rear side than the range from the front end edge of the side portion joint portion to 60% of the entire region in the front-rear direction with respect to the side portion joint portion. Therefore, the arrangement in the front-rear direction of the bending elastic member can be arranged in accordance with the depression of the abdomen, and the outer covering in the front waistline region can be made to fit the depression of the abdomen.

According to a preferred aspect, the plurality of curved elastic members may be arranged in the front-rear direction, and in the 1 st side region, adjacent curved elastic members may be spaced apart from each other at equal intervals in the front-rear direction.

The stretching force generated by the bending elastic member is likely to act uniformly in the front-rear direction, and the rigidity of the bending elastic region can be made uniform. This eliminates a portion of the bending elastic region having a locally low rigidity, and therefore wrinkles and lifting are less likely to occur. As a result, the front outer cover can be attached to the depression of the lower end of the abdomen in a face-like manner.

According to a preferred aspect, when the front surrounding region is divided into 3 parts in the width direction, the front surrounding region may have a pair of 2 nd side regions located at the outermost side in the width direction and a 2 nd center region located at the innermost side in the width direction, and the contraction magnification of the bending elastic member in the 2 nd side regions may be equal to or greater than the contraction magnification of the bending elastic member in the 2 nd center region.

Since the contraction magnification of the curved elastic member in the 2 nd central region is small, the absorbent core is less likely to be contracted in the width direction, and the absorbent area can be secured. Further, the center of the abdomen is not easily tightened, and the rubber seal is not easily attached to the center of the abdomen. Further, since the 2 nd side region has a large contraction magnification of the curved elastic member, the exterior body of the front body surrounding region can be made to fit the recess of the abdomen in the 2 nd side region, and leakage outside the front body surrounding region in the width direction can be suppressed.

According to a preferred aspect, the pair of 2 nd side regions may have the same respective contraction ratios of the curved elastic members.

This makes the fit uniform on both outer sides in the width direction of the front body surrounding region, thereby suppressing one side from coming off to the crotch side and suppressing leakage on the outer side in the width direction of the front body surrounding region.

According to a preferred aspect, when the front skirt region is divided into 3 portions in the width direction, has a pair of 2 nd side regions located on the outermost side in the width direction and a 2 nd center region located on the innermost side in the width direction, a plurality of the bending elastic members are arranged along the front-rear direction, the plurality of bending elastic members include a 1 st bending elastic member and a 2 nd bending elastic member, the 1 st bending elastic member is disposed forward of the lower region in the 2 nd central region, the region is a region where the distance between adjacent bending elastic members in the front-rear direction is the largest, the 2 nd bending elastic member is disposed rearward of the region, in the 2 nd central region, a contraction magnification of the 2 nd bending elastic member is smaller than a contraction magnification of the 1 st bending elastic member.

In the 2 nd central region, the exterior body in the front waistline region can be attached to the depression of the abdomen by the 1 st bending elastic member, and the absorbent core can be suppressed from shrinking by the 2 nd bending elastic member.

(2) General structure of absorbent article

Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In addition, 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 drawings, and the ratio of the dimensions and the like are different from those in the actual case. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

The absorbent article may be of a belt type or a pants type. The absorbent article may be a disposable diaper or a pants-type sanitary napkin. The absorbent article of the embodiment is a pants-type disposable diaper. Fig. 1 is a schematic front view of an absorbent article 10 of the present embodiment. Fig. 2 is a schematic plan view of the disposable diaper 10 of the present embodiment. Fig. 3 is a sectional view taken along line a-a shown in fig. 2. Fig. 2 and 3 show an extended state in which the absorbent article 10 is extended in a state in which side joint sections 60 described later are unfolded and no gathers are formed.

The absorbent article 10 has a front-back direction L and a width direction W that are orthogonal to each other. The front-back direction L is defined by a direction extending to the front side and the back side of the body. In other words, the front-rear direction L is a direction extending in the front-rear direction on the unfolded absorbent article 10. The absorbent article 10 has a thickness direction orthogonal to both the front-back direction L and the width direction W.

The absorbent article 10 has a front body surrounding region S1, a rear body surrounding region S2, and a crotch region S3. The front waistline region S1 is a region opposed to the front waistline (abdomen) of the wearer. The back torso region S2 is a region opposed to the back torso (back) of the wearer. The crotch region S3 is a region located in the crotch of the wearer and disposed between the front body surrounding region S1 and the rear body surrounding region S2.

The absorbent article 10 may have an absorbent main body 40 and an exterior body 15. The outer package 15 is disposed in at least the front torso-surrounding region S1 and the rear torso-surrounding region S2 on the non-skin surface side T2 of the absorbent main body 40. The exterior body 15 and the absorbent body 40 overlap in the thickness direction. The exterior body 15 may have a front exterior body 20 and a rear exterior body 30. The front outer package 20 is disposed on the non-skin surface side T2 of the front waistline region S1 with respect to the absorbent main body 40. The front outer cover 20 is disposed in the front waistline region S1 in the region overlapping the absorbent body 40 and in the region not overlapping the absorbent body 40. The rear outer package 30 is disposed on the non-skin surface side T2 with respect to the absorbent main body 40 in the rear body peripheral region S2. The rear exterior body 30 is independent from the front exterior body 20. Thus, the rear exterior body 30 is separated from the front exterior body 20 in the front-rear direction L. The rear exterior body 30 is disposed in the rear body peripheral region S2 in the region overlapping with the absorbent main body 40 and in the region not overlapping with the absorbent main body 40.

As shown in fig. 3, the front outer cover 20 may have a front 1 st outer sheet 25 disposed on the non-skin surface side T2 of the absorbent main body 40, a front 2 nd outer sheet 26 positioned on the non-skin surface side T2 of the front 1 st outer sheet 25, and an outer stretchable sheet 28 disposed between the front 1 st outer sheet 25 and the front 2 nd outer sheet 26. The front cover sheet 27 may be disposed on the skin surface side T1 of the front outer cover 20. The front cover sheet 27 may be disposed on the skin surface side T1 of the absorbent main body 40. In the region not overlapping the absorbent main body 40, the front cover sheet 27, the front 1 st outer sheet 25, the outer stretchable sheet 28, and the front 2 nd outer sheet 26 are laminated in this order from the skin surface side T1 toward the non-skin surface side T2, and joined to each other. The front cover sheet 27, the front 1 st outer sheet 25, and the front 2 nd outer sheet 26 may be formed of separate sheets or may be formed of the same sheet folded back.

As shown in fig. 3, the rear outer cover 30 may have a rear 1 st outer sheet 35 disposed on the non-skin surface side T2 of the absorbent main body 40, a rear 2 nd outer sheet 36 positioned on the non-skin surface side T2 of the rear 1 st outer sheet 35, and a rear rubber thread 38 disposed between the rear 1 st outer sheet 35 and the rear 2 nd outer sheet 36. The rear 1 st outer sheet 35, the rear rubber thread 38, and the rear 2 nd outer sheet 36 may be laminated in this order from the skin surface side T1 toward the non-skin surface side T2 in a region not overlapping the absorbent main body 40, and joined to each other. Further, a rear 3 rd outer sheet 39 may be disposed on the skin surface side of the rear 1 st outer sheet 35. Further, a rear cover sheet 37 may be disposed on the skin surface side T1 of the rear outer package 30. The back sheet 37 may be disposed on the skin surface side T1 of the absorbent main body 40. In the region where the rear 3 rd outer sheet 39 is arranged, the rear cover sheet 37, the rear 3 rd outer sheet 39, the rear 1 st outer sheet 35, the rear rubber thread 38, and the rear 2 nd outer sheet 36 may be laminated in this order from the skin surface side T1 toward the non-skin surface side T2, and joined to each other. The rear cover sheet 37, the rear 1 st outer sheet 35, the rear 2 nd outer sheet 36, and the rear 3 rd outer sheet 39 may be formed of separate sheets or may be formed of the same sheet folded back. The rear 2 nd exterior sheet 36 and the rear 3 rd exterior sheet 39 may be formed of the same sheet folded back at the body peripheral opening 67.

The crotch region S3 is a region in which the leg hole openings 66 (see fig. 1) described later are formed. The boundary on the crotch region side of front body surrounding region S1 is the front end edge of leg hole opening 66, and the boundary on the crotch region side of rear body surrounding region S2 is the rear end edge of leg hole opening 66. In another embodiment, the front exterior body 20 and the rear exterior body 30 of the exterior body 15 may be integrated, and the exterior body 15 may be provided from the front body peripheral region S1 to the rear body peripheral region S2.

As shown in fig. 1, a side joint portion 60 may be provided in which an end portion (side end portion) of the front body surrounding region S1 in the width direction W is joined to an end portion (side end portion) of the rear body surrounding region S2 in the width direction W. The side joint 60 defines, by the portions joined to each other, the end of the front torso-surrounding region S1 in the width direction W and the end of the rear torso-surrounding region S2 in the width direction W.

The outer portion in the present invention is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The inner side portion in the present invention is a portion that occupies a certain range in the width direction W including an inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. In the present invention, the front end portion and the rear end portion are portions that occupy a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer end includes a front end and a rear end, and the outer end edge includes a front end edge and a rear end edge.

As shown in fig. 1, in the absorbent article 10, a body-surrounding opening 67 (waist opening) through which the body of the wearer passes and a pair of leg-surrounding openings 66 into which the legs of the wearer are inserted are formed in a state in which the side joining portions 60 are formed. The body surrounding opening 67 may be defined by a front end edge S1F of the front body surrounding region S1 and a rear end edge S2R of the rear body surrounding region S2.

Here, fig. 2 shows a state in which the absorbent article 10 is unfolded by releasing the engagement at the side joint portions 60. The side joint portions 60 may extend in the front-rear direction L at the front exterior body 20 and the rear exterior body 30, respectively. In the pant-type absorbent article, the boundary between the front body surrounding region S1 and the crotch region S3 may be defined by the rear end edge of the side joining portion 60 provided on the front outer cover 20. Similarly, the boundary between the rear body surrounding region S2 and the crotch region S3 may be defined by the front end edge of the side joining portion 60 provided in the rear outer body 30.

As shown in fig. 3, an elastic member having stretchability in the width direction W is disposed in the front body surrounding region S1. The elastic member has 1 or more curved elastic members 22 curved from the center in the width direction W toward the outer side in the width direction W toward the front side. Thus, the elastic member is constituted by at least the curved elastic member 22. In the present embodiment, the elastic member has a front rubber thread that is stretchable in the width direction W as the bending elastic member 22. The elastic member may be formed of an outer stretchable sheet 28 stretchable in the width direction W, in addition to the bending elastic member 22. The elastic member may be constituted by the front exterior body 20 itself constituted by an elastic sheet, for example, in addition to the bending elastic member 22.

The bending elastic member 22 is fixed to at least one of the front 1 st outer sheet 25, the front 2 nd outer sheet 26, and the outer stretchable sheet 28 by an adhesive (e.g., an adhesive).

An elastic member having stretchability in the width direction W may be disposed in the rear torso-surrounding region S2. The elastic member may be formed of at least one of a rear rubber thread 38 that is stretchable in the width direction W and an outer stretchable sheet that is stretchable in the width direction W. Instead of the elastic member, for example, the rear outer package 30 itself may be formed of a stretchable sheet.

The absorbent body 40 is disposed across the front exterior body 20 and the rear exterior body 30. That is, the absorbent body 40 extends in the front body surrounding region S1, the rear body surrounding region S2, and the crotch region S3. The absorbent main body 40 may be configured independently of the front exterior body 20 and the rear exterior body 30. In this case, the absorbent main body 40 may be joined to the front exterior body 20 and the rear exterior body 30 in the front body surrounding region S1 and the rear body surrounding region S2, respectively.

The absorbent main body 40 contains at least the absorbent core 50. The absorbent core 50 may comprise, for example, comminuted pulp or a superabsorbent polymer (SAP) or a mixture of both. The absorbent core 50 is disposed at least in the crotch region S3. Preferably, the absorbent core 50 may extend in the front-back direction L from the front torso region S1 to the rear torso region S2. The absorbent core 50 may be covered by a core sheet. As shown in fig. 3, the absorbent main body 40 may include a skin-side sheet 42A positioned on the skin surface side of the absorbent core, a liquid-impermeable sheet 41 positioned on the non-skin surface side of the absorbent core 50, and a main body sheet 42B arranged on the non-skin surface side T2 of the liquid-impermeable sheet 41. The liquid-impermeable sheet 41 is a sheet having liquid-impermeability.

In the absorbent main body 40 of the present embodiment, the skin-side sheet 42A, the liquid-impermeable sheet 41, and the main body sheet 42B are arranged in this order from the skin-side surface T1 toward the non-skin-side surface T2 in the region on the front side of the absorbent core. In addition, in the region overlapping the absorbent core 50, the skin-side sheet 42A, the absorbent core 50, the liquid-impermeable sheet 41, and the main body sheet 42B are arranged in this order from the skin-side surface T1 toward the non-skin-side surface T2. The skin-side sheet 42A and the liquid-impermeable sheet 41 may be disposed so as to sandwich the absorbent core 50 in the thickness direction T. The liquid-impermeable sheet 41 may be a film, for example, as long as it is liquid-impermeable. The skin sheet 42A and the body sheet 42B may be liquid-permeable, and may be formed of, for example, nonwoven fabric. The liquid-impermeable sheet 41 may cover at least the crotch region S3. The liquid-impermeable sheet 41 may cover at least the absorbent core 50.

(3) Structure of bending elastic member 22

Next, the structure of the bending elastic member 22 will be described in detail with reference to fig. 2 to 5. Fig. 4 is a view for explaining the abdomen of the wearer. A of fig. 4 is a schematic view of the abdomen of the wearer viewed from the front. B of fig. 4 is a schematic view of the wearer's abdomen viewed from the side. The right side of B in fig. 4 is the front of the wearer and the left side is the back of the wearer. In fig. 4, the hatched portion indicates the depression of the abdomen. The position above the concavity of the abdomen corresponds to the bulge of the abdomen. The two dashed-dotted lines indicate positions where the front end edge 20F and the rear end edge 20R of the front outer package 20 are normally disposed. The line of the body of the wearer is denoted by BL. The navel of the wearer is indicated by O.

The absorbent article 10 has 1 or more curved elastic members 22. As shown in fig. 2 and 3, in the present embodiment, the absorbent article 10 has a plurality of curved elastic members 22 (221-. The bending

elastic members

221 and 228 are arranged with a space in the width direction W from the front side to the rear side.

At least 1 of the 1 or more curved elastic members 22 is disposed in a region not overlapping the absorbent core 50. In the present embodiment, the bending

elastic members

221 and 225 are disposed in regions that do not overlap with the absorbent core 50. The contraction force of the curved elastic members 221-225 which do not overlap with the absorbent core is not hindered by the absorbent core 50 having high rigidity. Therefore, the contraction force of the bending

elastic members

221 and 225 can be maintained, and thus the front outer cover 20 can be pulled up and the front outer cover 20 can be attached to the body of the wearer. By improving the adhesiveness, the front outer cover 20 can be prevented from slipping down toward the crotch side.

In addition, at least 1 of the 1 or more curved elastic members 22 may extend continuously in the width direction W across the center of the width direction W. In the present embodiment, the bending

elastic members

221 and 225 extend continuously in the width direction W. The curved elastic member 221-225 extends from one side end portion to the other side end portion of the front surrounding region S1. Thus, the front outer cover 20 can be attached to the body at the center of the abdomen of the wearer by the curved elastic member 22 continuously extending in the width direction W. This can improve the adhesiveness of the front outer cover 20. The center in the width direction W corresponds to a 2 nd central region FC2 described later.

In addition, all the curved elastic members 22 continuously extending in the width direction W may be disposed in regions not overlapping with the absorbent core 50. Thereby, the contraction force of all the curved elastic members 22 continuously extending in the width direction W can be maintained without being hindered by the highly rigid absorbent core 50. Further, the contraction force can be ensured as compared with the case where the curved elastic member 22 is not continuously extended, so that the front outer cover 20 can be made to fit the body more closely.

The rear end edge of the curved elastic member 22 is disposed on the front side of the rear end edge 20R of the front outer package 20 at the center in the width direction W. That is, all the bending elastic members 22 are disposed only in the region overlapping the front exterior body 20. Therefore, the bending elastic member 22 is disposed only in the front crotch region S1 and not in the crotch region S3. The rear end edge of the rear bending elastic member 22R disposed on the rearmost side among the plurality of bending elastic members 22 is disposed further toward the front side than the rear end edge 20R of the front outer package 20.

Here, as shown in fig. 4, a depression (see a hatched portion) extending in the width direction is generally formed at the lower end of the abdomen of the wearer. The recess at the lower end of the web portion is curved forward from the center in the width direction W toward the outer side in the width direction W. The depression at the lower end of the abdomen is usually located on the front side (waist opening side) of the rear end edge 20R of the front outer package 20 at the center in the width direction W.

Then, by disposing the rear end edge of the curved elastic member 22 at the center in the width direction W on the front side of the rear end edge 20R of the front outer package 20, the curved elastic member 22 is easily disposed along the recess from the center in the width direction to the outer side in the width direction. Since the abdomen starts to bulge at a position above the depression of the abdomen (the waist opening side), the front outer cover 20 is pulled up by contraction of the curved elastic member 22 continuously extending in the width direction W to be attached to the bulge of the abdomen. This can improve the adhesiveness of the front outer cover 20.

As shown in fig. 3, the front end edge 41F of the liquid-impermeable sheet 41 may be positioned on the front side of the curved elastic member 22 at the center in the width direction W. At the center in the width direction W, the front end edge 41F of the liquid-impermeable sheet 41 is disposed further toward the front side than the front end edge of the front curved elastic member 22F disposed most forward among the plurality of curved elastic members 22. As a result, the liquid-impermeable sheet 41 is brought into close contact with the body of the wearer by contraction of the curved elastic member 22, and the excrement is less likely to move to the front side of the curved elastic member 22. As a result, front leakage of excrement can be suppressed.

Further, since the curved elastic member 22 is easily disposed along the depression of the abdomen, when the front end edge 41F of the liquid-impermeable sheet 41 is disposed on the front side of the front end edge of the front curved elastic member 22F, the liquid-impermeable sheet 41 overlaps the bulging portion of the abdomen. Therefore, when the wearer lies on the stomach, the front edge 41F of the liquid-impermeable sheet 41 comes into close contact with the body due to the bulge in the abdomen. This can suppress front leakage of excrement when the wearer is lying on his/her stomach.

Further, the front end edge 41F of the liquid-impermeable sheet 41 may be disposed further to the front side than the front end edge of the front bending elastic member 22F or may be disposed further to the rear side than the front end edge of the front bending elastic member 22F at a position further to the outer side than the center in the width direction W.

The engaging member may not be provided in the region of the absorbent main body 40 that overlaps with the curved elastic member 22 in the thickness direction T. This can suppress an increase in rigidity of the absorbent main body 40 overlapping the bending elastic member 22 in the thickness direction T, and the contraction of the bending elastic member 22 is not hindered by the absorbent main body 40. Therefore, the reduction in the contraction force in the width direction W of the curved elastic member 22 can be suppressed, and therefore the front outer cover 20 can be attached to the body.

The joining member may be a member that joins members in the absorbent main body 40 to each other, may be a member that joins the absorbent main body 40 to the front exterior body 20 (front 1 st exterior sheet 25), or may be a member that joins the absorbent main body 40 to the front cover sheet 27.

In addition, at the end portions in the front-rear direction L of the absorbent main body 40, the sheets constituting the absorbent main body 40 may not be joined to each other. This reduces the rigidity of the absorbent body 40, and therefore can suppress a reduction in the contraction force in the width direction W of the bending elastic member 22. Thus, the front outer package 20 can be attached to the body.

Further, at the side end portion of the front body surrounding region S1, the curved elastic member 22 may be disposed further to the rear side than the range from the front end edge of the side portion joined portion 60 to 20% of the entire region in the front-rear direction with respect to the side portion joined portion 60. At the side end portion of the front surrounding region S1, the depression of the lower end of the abdomen portion is generally located more to the rear side than the range from the front end edge of the side joining portion 60 to 20% of the entire region in the front-rear direction with respect to the side joining portion 60. Therefore, the curved elastic member 22 can be disposed in the recess at the lower end of the abdomen at the side end of the front body surrounding region S1. This allows the front outer cover 20 to be attached to the body even at the side end of the front outer cover 20. The entire region in the front-rear direction of the side joining portion 60 is a region from the front end edge to the rear end edge of the side joining portion 60.

In addition, the elastic member may have a laminated elastic member extending in the width direction W so as to overlap with the absorbent core 50 in the thickness direction T. In the present embodiment, the bending elastic member 228 corresponds to a laminated elastic member. The curved elastic member 228 does not extend to the center in the width direction W of the absorbent core 50. The front outer cover 20 can be attached to the body by increasing the contractive force in the width direction W by the bending elastic member 228. Further, the curved elastic member 228 does not extend from one end to the other end in the width direction W of the absorbent core 50, and therefore, the absorbent core 50 can be suppressed from contracting in the width direction. This ensures the absorption area.

The linear elastic member 23 described later may be a laminated elastic member. The linear elastic member 23 may extend continuously from one end edge to the other end edge of the absorbent core 50, or the linear elastic member 23 may be cut at the center of the absorbent core 50 so as not to extend to the center of the absorbent core 50 in the width direction W.

(4) Modification example

Next, a modification will be described with reference to fig. 5 to 7. Fig. 5 is a schematic plan view of an absorbent article 10 according to modification 1. Fig. 6 is a schematic plan view of the front outer cover 20 of the absorbent article 10 according to modification 2. Fig. 7 is a diagram for explaining the absorbent article according to modification 3 and modification 4. Fig. 7 a is a diagram for explaining a positional relationship between the bending elastic member 22 and another member in modification 3. Fig. 7B is a schematic plan view of the front outer cover 20 of the absorbent article 10 according to modification 4. Fig. 5 to 7 are views in an extended state. Note that the same portions as those in the above embodiment are not described.

Next, modification 1 will be described. As shown in fig. 5, the skin panel 42A may have a front panel 421 and a pair of side panels 422 covering both outer sides of the front panel 421. The inner side of the side sheet 422 may be folded back to overlap. A leakage preventing elastic member 62 extending in the front-rear direction L may be disposed between the overlapped side pieces 422. The leakage preventing elastic member 62 is extended and contracted in the front-rear direction L. The leakage preventing elastic member 62 may be formed of a rubber thread that stretches in the front-rear direction L. The side sheet 422 rises toward the skin surface side T1 due to contraction of the leakage preventing elastic member 62. The pair of side sheets 422 respectively constitute the leakage preventing gathers 61. The leakage preventing gathers 61 have contracted portions 63 that rise up by contraction of the leakage preventing elastic members 62. The leakage preventing fold 61 has a leakage preventing base end edge 64 serving as a standing fulcrum of the constricted portion 63. The leakage preventing base edge 64 has a 1 st leakage preventing base edge 641 and a 2 nd leakage preventing base edge 642.

The 1 st leakage preventing base end edge 641 serves as a rising fulcrum of the constricted portion 63 at a position outside the constricted portion 63 in the width direction W. The 1 st leakage prevention base end edge 641 is an inner edge of a region formed by joining the side sheet 422 and the front sheet 421 at a position outside the contracted portion 63 in the width direction. The 2 nd leakage preventing base end edge 642 serves as a rising fulcrum of the constricted portion 63 at positions on both outer sides in the front-rear direction L with respect to the constricted portion 63. The 2 nd leakage preventing base end edge 642 is an inner end edge of a region formed by joining the side sheet 422 and the front sheet 421 at positions on both outer sides in the front-rear direction L with respect to the contracted portion 63.

The contracted portion 63 is a portion where the side sheet 422 is not joined to the front sheet 421 and can be contracted by the leakage-preventing elastic member 62, and does not include a portion where the leakage-preventing elastic member 62 in a non-extended state is arranged.

The curved elastic member 22 may be disposed further to the front side than the front end edge 63F of the contracted portion 63. This allows the front outer package 20 to be lifted up by contraction of the bending elastic member 22, and can suppress occurrence of wrinkles due to contraction of the contracted portion 63 in the front-rear direction L. This ensures a space for receiving excrement.

In addition, at least any one of the curved elastic members 22 may be arranged to overlap with the constricted portion 63 in the thickness direction T. Thus, the leakage preventing gathers 61 are easily expanded outward in the width direction and pulled up to the front side by the expansion and contraction of the curved elastic member 22. This can prevent the leakage preventing wrinkle 61 from falling down inward in the width direction W or the leakage preventing wrinkle 61 from being excessively pulled inward in the front-rear direction L by the contraction of the contraction portion 63. This ensures a space for receiving excrement. Further, since the body girth is continuous with the depression of the thigh root, the region contracted by the curved elastic member 22 and the contracted portion 63 can be continuous along the depression, and therefore the absorbent article 10 can be stably fitted to the body of the wearer from the crotch region S3 to the front girth region S1.

Next, modification 2 will be described. As shown in fig. 6, in the case where a region from the center C in the width direction W of the front body surrounding region S1 to the side end edge in the width direction of the front body surrounding region S1 is divided into 3 parts in the width direction W, the absorbent article 10 may have the 1 st side region FS1, the 1 st central region FC1, and the middle region FM. When the front surrounding region S1 is thus divided, the 1 st side region FS1 is a region located outermost in the width direction W, the 1 st center region FC1 is a region located innermost in the width direction W, and the middle region FM is a region located between the 1 st side region FS1 and the 1 st center region FC1 in the width direction.

When the plurality of bending elastic members 22 are arranged in the front-rear direction L, the plurality of bending elastic members 22 include a front bending elastic member 22F and a rear bending elastic member 22R. As shown in fig. 6, a bending elastic region ER, which is a region between the front bending elastic member 22F and the rear bending elastic member 22R in the front-rear direction L, may be provided.

The 1 st side region FS1 may have a maximum length in the front-rear direction L11 longer than a maximum length L13 in the front-rear direction L of the 1 st center region FC 1. The depressions in the abdomen are longer in the front-rear direction L than in the center in the width direction W (see fig. 4). Therefore, the arrangement in the front-rear direction L of the curved elastic member 22 can be arranged in accordance with the depression of the abdomen, and the front exterior body 20 can be brought into closer contact with the depression of the abdomen.

In fig. 6, the difference between the maximum length L12 and the minimum length L13 in the front-rear direction L of the bending elastic region ER of the middle region FM may be greater than the difference between the maximum length L11 and the minimum length L12 in the front-rear direction L of the bending elastic region ER of the 1 st side region FS1 and greater than the difference between the maximum length L12 and the minimum length L13 in the front-rear direction L of the bending elastic region ER of the 1 st center region FC 1. The difference between the maximum length and the minimum length in the front-rear direction L of the depression of the lower end of the abdomen portion becomes maximum in the intermediate region. Therefore, the arrangement in the front-rear direction L of the curved elastic member 22 can be arranged in accordance with the depression of the abdomen, and the front exterior body 20 can be brought into closer contact with the depression of the abdomen.

When the length L11 is 100, the length L12 is 90, the length L13 is 55, and the length L14 is 48.

In fig. 6, the length in the front-rear direction of the front curved elastic member 22F between the front end edge on the foremost side and the rear end edge on the rearmost side in the front-rear direction L is a length L21. The length in the front-rear direction of the front-most front end edge and the rear-most rear end edge of the rear curved elastic member 22R in the front-rear direction L is a length L22. Length L22 may be shorter than length L21.

The change in the front-rear direction L of the lower side (rear side) of the depression of the lower end of the abdomen portion is smaller than the change in the front-rear direction L of the upper side (front side) of the depression of the lower end of the abdomen portion (see fig. 4). Therefore, the front curved elastic member 22F can be disposed in accordance with the upper end of the depression of the abdomen, and the rear curved elastic member 22R can be disposed in accordance with the lower end of the depression of the abdomen, so that the front exterior body 20 can be more closely attached to the depression of the abdomen.

In the 1 st central region FC1, the front bending elastic member 22F may be disposed further to the rear side than the range from the front end edge 60F of the side joining portion 60 to 60% of the entire region in the front-rear direction of the side joining portion 60. In the 1 st central region FC1, the depression at the lower end of the abdomen portion is located more to the rear side than the lower range from the front end edge 60F of the side portion joint portion 60 to 60% of the entire region in the front-rear direction of the side portion joint portion. Therefore, the arrangement in the front-rear direction L of the curved elastic member 22 can be arranged in accordance with the depression of the abdomen, and the front exterior body 20 can be brought into closer contact with the depression of the abdomen.

In the 1 st side region FS1, the adjacent curved elastic members 22 may be equally spaced from each other in the front-rear direction L. The stretching force generated by the bending elastic member 22 is likely to act uniformly in the front-rear direction L, and the rigidity of the bending elastic region ER can be made uniform. This eliminates a portion of the bending elastic region ER having a locally low rigidity, and therefore wrinkles and lifting are less likely to occur. As a result, the front outer cover 20 can be attached to the depression of the lower end of the abdomen in a planar manner.

In addition, the "equal interval" is preferably substantially equal, and specifically, the difference between the intervals in the front-rear direction L between the plurality of bending elastic members 22 is preferably 3mm or less. In order to further uniformize the rigidity, the difference between the intervals may preferably be 1mm or less.

In addition, the length of the curved elastic region ER in the front-rear direction L on the side joining portion 60 may be in the range of 35% to 65% with respect to the entire region in the front-rear direction of the side joining portion 60. Since the depression of the lower end of the abdomen portion at the side joining portion 60 is normally within this range, the front-rear direction L arrangement of the bending elastic member 22 can be arranged in accordance with the depression of the abdomen portion, and the front outer package 20 can be made to fit the depression of the abdomen portion more closely.

In addition, the length L14 in the front-rear direction L of the curved elastic region ER at the center C in the width direction W of the front waistline region S1 may be in the range of 10% to 40% with respect to the entire region in the front-rear direction of the side join portion 60. Since the depression of the lower end of the abdomen portion at the center C in the width direction W of the front waistline region S1 is normally within this range, the arrangement in the front-rear direction L of the bending elastic member 22 can be arranged in accordance with the depression of the abdomen portion, and the front outer cover 20 can be brought into closer contact with the depression of the abdomen portion.

In the 1 st central region FC1, the maximum length L31 between adjacent curved elastic members 22 may be 8mm or more. In the 1 st central region FC1, the rigidity of the gap of the curved elastic member 22 corresponding to the maximum length L31 is reduced, and therefore the deformation is easily performed in accordance with the expansion and contraction of the skin of the wearer with the gap as a base point. Therefore, the front outer cover 20 can be made to fit the body of the wearer more closely.

As shown in fig. 6, the maximum length L31 between adjacent curved elastic members 22 in the 1 st central region FC1 may be greater than the maximum length between adjacent curved elastic members 22 in the 1 st side region FS 1. On the other hand, the minimum length between the adjacent curved elastic members 22 in the 1 st central region FC1 may be smaller than the minimum length between the adjacent curved elastic members 22 in the 1 st side region FS 1. In order to have such a configuration, for example, two or more 1 st curved elastic members 22A described later may be arranged so as to overlap each other in the 1 st central region FC1 and not overlap in the 1 st side region FS 1. Similarly, two or more 2 nd bending elastic members 22B described later may be arranged so as to overlap each other in the 1 st central region FC1 and not overlap in the 1 st side region FS 1. This makes it possible to provide the region GR where the distance between the adjacent curved elastic members 22 in the front-rear direction L is maximized. The region GR is a region having reduced rigidity, and therefore is likely to deform in accordance with the expansion and contraction of the skin of the wearer.

In fig. 6, the 1 st bending elastic member 22 (front bending elastic member 22F) and the 2 nd bending elastic member 22 have a large change in the front-rear direction L from the front side, and the 3 rd bending elastic member 22 has a small change in the front-rear direction L from the front side. Further, the 4 th bending elastic member 22 from the front side has a large change in the front-rear direction L, and the 5 th, 6 th and 7 th bending elastic members 22 (rear bending elastic members 22R) from the front side have a small change. By disposing the plurality of curved elastic members 22 in this manner, the adhesiveness of the front outer cover 20 can be improved in each of the 1 st side region FS1 and the 1 st center region FC 1.

In addition, as shown in fig. 6, in the case of dividing the front surrounding region S1 into 3 portions in the width direction W, the absorbent article 10 may have a 2 nd central region FC2 and a pair of 2 nd side regions FS 2. When the front surrounding region S1 is thus divided, the 2 nd side region FS2 is the outermost region in the width direction W, and the 2 nd center region FC2 is the innermost region in the width direction W. The 2 nd center region FC2 is a region sandwiched by the 2 nd side regions FS 2.

The contraction magnification of the curved elastic member 22 of the 2 nd side region FS2 is equal to or greater than the contraction magnification of the curved elastic member 22 of the 2 nd central region FC 2. Since the contraction magnification of the curved elastic member 22 of the 2 nd central region FC2 is small, the absorbent core 50 is less likely to contract in the width direction W, and the absorption area can be ensured. Further, the center of the abdomen is not easily tightened, and the rubber seal is not easily attached to the center of the abdomen. Further, since the 2 nd side region FS2 has a large contraction magnification of the curved elastic member 22, the front outer cover 20 can be made to fit the recess of the abdomen in the 2 nd side region, and leakage outside the front waistline region S1 in the width direction can be suppressed.

The respective contraction rates of the curved elastic members 22 of the pair of 2 nd side regions FS2 may be the same. Accordingly, by making the adhesiveness uniform on both outer sides in the width direction W of the front body surrounding region S1, it is possible to suppress one side from coming off to the crotch side, and to suppress leakage outside in the width direction W of the front body surrounding region S1.

The shrinkage ratios "the same" may be substantially the same, and specifically, the difference in shrinkage ratio may be less than 0.2.

The plurality of curved elastic members 22 may have a 1 st curved elastic member 22A and a 2 nd curved elastic member 22B. The 1 st bending elastic member 22A is a bending elastic member 22 disposed on the front side of the region GR, and the region GR is a region where the interval between the adjacent bending elastic members 22 in the front-rear direction L is the largest. The 2 nd bending elastic member 22B is the bending elastic member 22 disposed on the rear side of the region GR. In fig. 6, the region GR is a region between the 3 rd curved elastic member 22 from the front side and the 4 th curved elastic member 22 from the front side.

In addition, the 1 st curved elastic members 22A extend in the 1 st central region FC1 such that the interval in the front-rear direction L decreases. Thus, the 1 st curved elastic member 22A extends in the 1 st central region FC1 so as to converge in the front-rear direction L. Likewise, the 2 nd bending elastic members 22B extend from each other in the 1 st central region FC1 with the interval in the front-rear direction L decreasing. The 2 nd bending elastic member 22B extends in the 1 st central region FC1 so as to converge in the front-rear direction L. However, the 2 nd bending elastic member 22B extends so as to converge toward a portion different from a portion where the 1 st bending elastic member 22A converges. Since all the curved elastic members 22 are not caused to converge to the same portion, they can be eliminated from the portion where the tightening is locally enhanced.

In the 2 nd central region FC2, the contraction magnification of the 2 nd curved elastic member 22B may be smaller than that of the 1 st curved elastic member 22A. In the 2 nd central region FC2, the front exterior body 20 can be attached to the depression of the abdomen by the 1 st bending elastic member. Further, the front outer cover 20 can be attached to the depression of the abdomen by the 2 nd bending elastic member, and the absorbent core 50 can be suppressed from being contracted.

The measurement of the contraction magnification of the bending elastic member 22 may be performed by a known method. The measurement can be performed, for example, in the following manner. The actual length H1 after bending of the bending elastic member 22 in a state where the absorbent article 10 is maximally extended in the width direction W to such an extent that the occurrence of wrinkles in the absorbent article 10 is no longer visually recognizable is measured. Next, the curved elastic member 22 corresponding to the measured length H1 is cut at the dividing line. The adhesive (adhesive) to which the bending elastic member 22 is fixed is melted, and the bending elastic member 22 is separated from the members (the front 1 st exterior sheet 25, the front 2 nd exterior sheet 26, the exterior stretchable sheet 28, and the like) to which the bending elastic member 22 is fixed. The separated bent elastic member 22 is sufficiently dried. The length H0 of the bent elastic member 22 after drying was measured. Then, the shrinkage factor can be calculated by "shrinkage factor H1/H0".

Next, modification 3 will be described. As shown in a of fig. 7, the elastic member may have a linear elastic member 23 (231) extending linearly in the width direction and 233. The linear elastic member 231 may be disposed on the front side of the curved elastic member 22. When the curved elastic member 22 is disposed along the depression at the lower end of the abdomen, the linear elastic member 231 disposed on the front side (waist opening side) of the curved elastic member 22 is disposed at the bulge portion of the abdomen. This allows the front outer cover 20 to be attached to the body at the bulge portion of the abdomen.

The curved elastic member 22 is easily arranged along the depression of the lower end of the abdomen. Therefore, the linear elastic member 231 is easily disposed around the waist portion where the bulge portion of the abdomen is most stable (i.e., where the change in the abdominal circumference size is gentle). Therefore, the linear elastic member 231 is not easily slipped off and can be fitted to the body of the wearer.

The linear elastic member 23 may be disposed further to the rear side than the foremost portion of the front end edge of the curved elastic member 22. Thereby, the linear elastic member 23 is easily pulled up by the curved elastic member 22. Therefore, the front outer cover 20 can be pulled up by the contraction of the linear elastic member 232 in addition to the contraction of the curved elastic member 22, and the front outer cover 20 can be attached to the body. Further, since the linear elastic member is disposed in a region not overlapping the absorbent core 50, the contraction force of the linear elastic member 232 can be maintained without being hindered by the absorbent core 50 having high rigidity.

The linear elastic member 23 may be disposed on the front side of the front end edge 50F of the absorbent core 50. Thus, the linear elastic members 23 are disposed in the regions not overlapping the absorbent core 50, and therefore the contraction force of the linear elastic members 232 can be maintained without being hindered by the absorbent core 50 having high rigidity.

Therefore, the linear elastic member 23 may be disposed in a range X from a position on the rear side of the most front portion of the front end edges of the curved elastic members 22 to a position on the front side of the front end edge 50F of the absorbent core 50.

In addition, the linear elastic member 23 (linear elastic members 232, 233) may overlap at least one of the curved elastic members 22 in the thickness direction T. Since the curved elastic member 22 needs to be arranged so as to be curved, the curved elastic member 22 is less likely to be arranged than the linear elastic member 23, and the contraction force is less likely to be controlled. Therefore, the contraction force of the region where the curved elastic member 22 is disposed can be easily adjusted by the linear elastic member 23 which is easy to control, and the front outer cover 20 can be appropriately attached to the body.

In addition, the linear elastic member 23 (linear elastic member 232) may be disposed between the center of the curved elastic member 22 in the front-rear direction L and the rearmost portion of the curved elastic member 22. This makes it easy to dispose the linear elastic member 23 in the abdominal depression or around the depression. Therefore, the linear elastic member 23 is pulled up toward the curved elastic member 22, and the front outer cover 20 can be attached to the body along the bulge portion at the lower end of the abdomen.

Next, modification 4 will be described. As shown in B of fig. 7, the linear elastic member 23 may be disposed to overlap the plurality of curved elastic members 22 in the thickness direction T. In fig. 7B, two linear elastic members 23 are arranged. The contraction magnification of the 2 nd side region FS2 and the contraction magnification of the 2 nd center region FC2 can be controlled by the linear elastic member 23. The front outer package 20 can be appropriately attached to the body.

The linear elastic member 23 is described by way of example as a rubber thread, but may be, for example, an extensible sheet (outer extensible sheet 28).

(5) Other embodiments

While the present invention has been described in detail with reference to the above embodiments, it will be 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 implemented as a modified form and a modified form without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description in the present specification is for illustrative purposes, and the present invention is not limited thereto.

In the above description, the bending elastic member 228 is described as an example of the laminated elastic member overlapping the absorbent core 50, but the present invention is not limited thereto. The laminated elastic member may be a linear elastic member 23.

In the above description, the bending elastic member 22 extends continuously in the width direction W so as to extend across the center in the width direction W, but the present invention is not limited thereto. The curved elastic member 22 may be cut after the curved elastic member 22 is arranged and fixed in a curved manner so that the curved elastic member 22 discontinuously extends, that is, discontinuously extends in the width direction W. All the curved elastic members 22 may be made to extend discontinuously in the width direction W. The curved elastic member 22 may be discontinuously extended by cutting a portion of the curved elastic member 22 at an arbitrary position. For example, the curved elastic member 22 may continuously extend at least any one of the 1 st side region FS1, the 1 st central region FC1, and the middle region FM. The curved elastic member 22 may discontinuously extend in at least any one of the 1 st side region FS1, the 1 st center region FC1, and the middle region FM. In order to further enhance the effect of pulling up the front outer cover 20, the curved elastic member 22 preferably extends continuously in the intermediate region FM.

In addition, in the case where a plurality of the curved elastic members 22 are arranged, any curved elastic member 22 may continuously extend, and the remaining curved elastic members 22 may discontinuously extend. In addition, all of the curved elastic members 22 may also extend continuously.

In addition, in the case where the rear end edge of the curved elastic member 22 is disposed further toward the front side than the rear end edge of the front outer cover 20 in the center in the width direction W, all the curved elastic members 22 may be disposed in the region overlapping with the absorbent core 50. In addition, in the case where at least 1 of the 1 or more curved elastic members 22 is disposed in a region not overlapping with the absorbent core 50, the rear end edge of the curved elastic member 22 may be disposed further toward the rear side than the rear end edge of the front outer cover 20 at the center in the width direction W. By preventing the rigidity of the absorbent core 50 from increasing, the adhesiveness of the outer package 15 in the front surrounding region S1 can be improved.

In the above description, as shown in fig. 2, all the curved elastic members 22(226 and 228) arranged in the region overlapping with the absorbent core 50 may be arranged so as not to cross the center in the width direction W. The curved elastic members 22(221-225) that are not arranged in the region overlapping the absorbent core 50 may extend continuously across the center in the width direction W. This prevents the rigidity of the absorbent core 50 from increasing due to the expansion and contraction of the bending elastic member 22, and improves the adhesiveness of the outer package 15 in the front waistline region S1.

As shown in fig. 5, the curved elastic member 22 disposed in a region not overlapping the absorbent core 50 may be disposed so as not to extend across the center in the width direction W. For example, the curved elastic member 22 closer to the absorbent core 50 may extend discontinuously so as not to extend across the center in the width direction W, and the curved elastic member 22 farther from the absorbent core 50 may extend continuously.

The curved elastic member 22 distant from the absorbent core 50 may extend discontinuously so as not to extend across the center in the width direction W. This makes it difficult to tighten the center of the abdomen and to attach the rubber seal to the center of the abdomen.

In the above description, the bending elastic member 22 may also be colored. Thus, the wearer and/or the assistant such as a mother can visually confirm the curved elastic member 22, and can actually feel the concave arrangement of the curved elastic member 22 along the abdomen. When the curved elastic member 22 is disposed so as to deviate from the depression of the abdomen, the assistant may adjust the position of the front outer cover 20 or the absorbent article 10 itself with respect to the body of the wearer so as to follow the depression of the abdomen while visually checking the colored curved elastic member 22. This enables the front outer package 20 to be appropriately attached to the body.

When a plurality of the curved elastic members 22 are provided, all the curved elastic members 22 may be colored, a part of the curved elastic members 22 may be colored, or 1 curved elastic member 22 may be colored. When a part of the curved elastic member 22 is colored, at least one of the curved elastic members 22 (1 st curved elastic member 22A) on the front side of the region GR may be colored, and the curved elastic member 22(2 nd curved elastic member 22B) on the rear side of the region GR may not be colored. Alternatively, at least one of the curved elastic members 22 on the rear side of the region GR may be colored without coloring the curved elastic member 22 on the front side of the region GR. Alternatively, any one of the curved elastic members 22 on the front side of the region GR may be colored, and any one of the curved elastic members 22 on the rear side of the region GR may be colored.

The color of the bending elastic member 22 may be, for example, cyan as long as it is a color having a large color difference from the members constituting the front exterior body 20. Thus, since the members constituting the front exterior body 20 are normally white, the curved elastic members 22 can be easily recognized. Since the non-colored color of the bending elastic member 22 is normally white, when the member constituting the front outer cover 20 is white, the visibility is low, and the wearer and the installer are not easily visually recognized.

The color difference (Δ E) between the colored curved elastic member 22 and the periphery of the curved elastic member 22 may be 2 or more. By setting the color difference Δ E to 2 or more, the curved elastic member 22 can be easily recognized by the wearer and the assistant.

The color difference Δ E can be obtained by comparing two points (two regions) to be measured using a commercially available colorimeter and converting the values into numerical values based on CIE1976(L × a × b) color space defined in JIS Z8729. Specifically, when the difference between the L × values at two points to be measured is Δ L, the difference between a × values is Δ a, and the difference between b × values is Δ b, the difference is obtained from the color difference Δ E ═ 2+ (Δ a) 2+ (Δ b) 2] 1/2.

Industrial applicability

An absorbent article having improved conformability to the outer covering body in the front surrounding region can be obtained.

Description of the reference numerals

10. An absorbent article; 15. an exterior body; 20. a front outer package; 22. a bending elastic member; 22A, 1 st curved elastic member; 22B, 2 nd bending elastic member; 22F, a front curved elastic member; 22R, a rear bending elastic member; 23. a linear elastic member; 25. the front 1 st outer sheet; 26. the front 2 nd external sheet; 27. a front cover sheet; 28. an extensible sheet is arranged outside; 30. a rear outer package body; 35. the back 1 st external sheet; 36. the second 2 nd external sheet; 37. a rear cover plate; 38. a rear side rubber wire; 39. the back 3 rd external sheet; 40. an absorbent main body; 41. a liquid-impermeable sheet; 41F, front end edge; 42A, a skin patch; 42B, a body piece; 50. an absorbent core; 60. a side joint part; 61. preventing wrinkles from leaking; 62. a leakage-proof elastic member; 63. a constriction; 64. the edge of the leakage-proof base end; 66. a leg opening; 67. a body surrounding opening portion; 421. a dough sheet; 422. a side sheet; 641. 1 st leak-proof base end edge; 642. 2 nd leakage-proof base end edge; ER, bending elastic region; FC1, center 1 region; FC2, center 2 region; FM, middle area; FS1, side 1 region; FS2, side 2 region; GR, region; s1, a front surrounding area; s2, a posterior body surrounding area; s3, crotch region.

Claims

1. An absorbent article having a front-back direction, a width direction, a front body region, a back body region, a crotch region, an absorbent core, an absorbent body, a front outer cover, a back outer cover, and an elastic member,

the width direction is orthogonal to the front-rear direction,

the crotch region is disposed between the front body region and the rear body region,

the absorbent main body including the absorbent core and being disposed across the front torso surrounding area and the rear torso surrounding area,

the front outer cover is disposed on the non-skin surface side of the absorbent main body in the front peripheral region,

the rear outer cover is disposed on the non-skin surface side of the absorbent main body in the rear body peripheral region and is independent from the front outer cover,

the elastic member has stretchability in the width direction in the front waistline region,

the elastic member has 1 or more curved elastic members curved from the center in the width direction toward the outer side in the width direction toward the front side,

wherein the content of the first and second substances,

the rear end edge of the curved elastic member is disposed on the front side of the rear end edge of the front outer cover in the center in the width direction.

2. The absorbent article of claim 1,

at least 1 of the 1 or more curved elastic members is disposed in a region not overlapping with the absorbent core.

3. An absorbent article having a front-back direction, a width direction, a front body region, a back body region, a crotch region, an absorbent core, an absorbent body, an outer covering, and an elastic member,

the width direction is orthogonal to the front-rear direction,

the outer covering is disposed on the non-skin surface side of the absorbent main body at least in the front body region and the rear body region,

wherein the content of the first and second substances,

4. The absorbent article according to claim 3,

the exterior body is a front exterior body and a rear exterior body,

5. The absorbent article according to any one of claims 1 to 4, wherein,

at least 1 of the 1 or more curved elastic members extends continuously in the width direction so as to straddle a center of the width direction.

6. The absorbent article according to any one of claims 1 to 5, wherein,

the absorbent article is provided with a side joining part formed by joining a side end part of the front body surrounding region and a side end part of the rear body surrounding region,

at the side end portion of the front surrounding region, the curved elastic member is disposed rearward of a range from a front end edge of the side portion joint portion to 20% of the entire region in the front-rear direction of the side portion joint portion.

7. The absorbent article according to any one of claims 1 to 6, wherein,

all the curved elastic members continuously extending in the width direction are disposed in a region not overlapping with the absorbent core.

8. The absorbent article according to any one of claims 1 to 7, wherein,

the elastic member has a linear elastic member linearly extending in the width direction,

the linear elastic member is disposed on the front side of the curved elastic member.

9. The absorbent article according to any one of claims 1 to 8, wherein,

the linear elastic member is disposed more rearward than the foremost portion of the front end edges of the curved elastic members and more forward than the front end edges of the absorbent core.

10. The absorbent article of claim 9,

the linear elastic member overlaps at least any one of the curved elastic members in a thickness direction.

11. The absorbent article according to any one of claims 1 to 10, wherein,

the absorbent main body has a sheet having liquid-impermeability,

the front end edge of the sheet is located on the front side of the curved elastic member at the center in the width direction.

12. The absorbent article according to any one of claims 1 to 11,

no engaging member is provided in a region of the absorbent main body that overlaps with the bending elastic member in the thickness direction.

13. The absorbent article according to any one of claims 1 to 12, wherein,

the absorbent article has a skin surface sheet positioned on the skin surface side of the absorbent core,

the skin surface piece has a front surface piece and a pair of side pieces covering both outer sides of the front surface piece,

the pair of side sheets are respectively formed into leakage-preventing creases having contracted portions which rise up by contraction of leakage-preventing elastic members extending in the front-rear direction,

the curved elastic member is disposed on the front side of the front end edge of the constricted portion.

14. The absorbent article according to any one of claims 1 to 12, wherein,

the absorbent article has a skin surface sheet disposed closer to the skin surface side than the absorbent core,

at least any one of the 1 or more curved elastic members is arranged to overlap the constricted portion in the thickness direction.

15. The absorbent article according to any one of claims 1 to 14, wherein,

the elastic member has a laminated elastic member extending in the width direction so as to overlap the absorbent core in the thickness direction,

the laminated elastic member does not extend to the center in the width direction of the absorbent core.

16. The absorbent article according to any one of claims 1 to 15, wherein,

a plurality of the bending elastic members are arranged along the front-rear direction,

the plurality of bending elastic members include a front bending elastic member disposed on the foremost side in the front-rear direction and a rear bending elastic member disposed on the rearmost side in the front-rear direction,

the plurality of curved elastic members have curved elastic regions that are regions between the front curved elastic member and the rear curved elastic member in the front-rear direction,

a region from the center of the front surrounding region in the width direction to the side end edge of the front surrounding region in the width direction is divided into 3 parts in the width direction, and the region has a 1 st side region located at the outermost side in the width direction, a 1 st center region located at the innermost side in the width direction, and an intermediate region located between the 1 st side region and the 1 st center region in the width direction,

the 1 st side region has a maximum length in the front-rear direction longer than a maximum length in the front-rear direction of the 1 st center region.

17. The absorbent article of claim 16,

the difference between the maximum length and the minimum length of the bending elastic region of the middle region in the front-rear direction is larger than the difference between the maximum length and the minimum length of the bending elastic region of the 1 st side region in the front-rear direction, and the difference between the maximum length and the minimum length of the bending elastic region of the 1 st center region in the front-rear direction.

18. The absorbent article of claim 16 or 17,

the length of the front end edge of the most front side and the rear end edge of the most rear side in the front-rear direction of the rear curved elastic member in the front-rear direction is shorter than the length of the front end edge of the most front side and the rear end edge of the most rear side in the front-rear direction of the front curved elastic member in the front-rear direction.

19. The absorbent article according to any one of claims 16 to 18,

in the 1 st central region, the front bending elastic member is disposed rearward of a range from a front end edge of the side portion joint portion to 60% of an entire region in a front-rear direction of the side portion joint portion.

20. The absorbent article according to any one of claims 16 to 19,

in the 1 st side region, adjacent curved elastic members are equally spaced from each other in the front-rear direction.

21. The absorbent article according to any one of claims 1 to 20, wherein,

the front enclosing region is divided into 3 parts along the width direction, and has a pair of 2 nd side regions located at the outermost side in the width direction and a 2 nd central region located at the innermost side in the width direction,

the 2 nd side region has a contraction magnification of the curved elastic member that is equal to or greater than a contraction magnification of the curved elastic member in the 2 nd center region.

22. The absorbent article of claim 21,

the respective contraction rates of the curved elastic members of the pair of 2 nd side regions are the same.

23. The absorbent article according to any one of claims 1 to 22, wherein,

the plurality of curved resilient members having a 1 st curved resilient member and a 2 nd curved resilient member,

the 1 st curved elastic member is disposed forward of the lower region in the 2 nd central region, which is a region where the distance between adjacent curved elastic members in the front-rear direction is maximized,

the 2 nd bending elastic member is arranged more rearward than the region,

in the 2 nd central region, the contraction magnification of the 2 nd curved elastic member is smaller than the contraction magnification of the 1 st curved elastic member.