WO2018096877A1

WO2018096877A1 - Absorbent article

Info

Publication number: WO2018096877A1
Application number: PCT/JP2017/039257
Authority: WO
Inventors: 光槇原; 和泉田代
Original assignee: 王子ホールディングス株式会社
Priority date: 2016-11-24
Filing date: 2017-10-31
Publication date: 2018-05-31
Also published as: RU2719908C1; JP2018082927A; CN109982674A; CN109982674B; JP6327324B1

Abstract

The present invention addresses the problem of providing an absorbent article which is capable of preventing leakage of an excreted liquid by being fitted on the body despite various movements of the body, and in which discomfort due to the stiffness of an absorbent body is mitigated. The present invention pertains to an absorbent article which has: a front body section contacting the abdomen of a wearer; a rear body section contacting the back of the wearer; an absorbent body provided in a crotch part located between the front body section and the rear body section, the absorbent body being divided in the longitudinal direction and disposed in a portion from the front body section to the rear body section; and a plurality of stretchable members which are stretched in the width direction and are disposed on longitudinal end portions on both or either of the front body section and the rear body section. The absorbent body has grooves, portions of the grooves are present in the longitudinal end portions of the absorbent body, and at least one of the stretchable members has a portion overlapping at least one of the longitudinal end portions of the absorbent body from the non-skin-contacting side of the absorbent body. In addition, the stretchable members overlapping the longitudinal end portions of the absorbent body cross at least a portion of the grooves present in the longitudinal end portions of the absorbent body.

Description

Absorbent articles

The present invention relates to an absorbent article.

◇ Absorbent articles such as sanitary napkins and disposable diapers absorb excretion fluid such as urine with an absorber. For example, disposable diapers cover the wearer's abdomen, back, and crotch, and are therefore affected by various body shapes and body movements. In particular, the absorbent body is affected by body movements. Easy member. For this reason, depending on how the wearer moves, the absorbent body may be bent or broken. In such a case, the fit of the absorbent body is lowered, and leakage of excretory fluid is likely to occur.

The absorbent body is a member having high rigidity among the members constituting the absorbent article. For this reason, when an absorbent article such as a sanitary napkin or a disposable diaper is worn, the wearer may feel discomfort due to the rigidity of the absorbent body. Moreover, since an absorber swells by absorbing excretory fluid, the swollen absorber may increase a wearer's discomfort.

In order to solve such problems, it has been studied to adjust the thickness of the absorber or to improve the arrangement of the elastic members constituting the absorbent article. For example, Patent Document 1 discloses a disposable diaper in which a thin-walled portion is provided at an end in the longitudinal direction of an absorbent body, and at least one of the waistline elastic members crosses the width direction of the thin-walled portion of the absorbent body. Disposed disposable diapers are disclosed. In Patent Document 1, it has been studied to improve the fit of the absorber and eliminate the uncomfortable feeling when worn by devising the thickness of the absorber and the arrangement of constituent members in the vicinity of the absorber.

Further, in Patent Document 2, the front waist region has a first stretch region that crosses the end of the absorber, a second stretch region that is adjacent to the first stretch region and is positioned below in the longitudinal direction, and further It is a disposable diaper having a third stretchable region located below, and the correlation of the elongation stress of each stretchable region is second stretchable region ≧ first stretchable region> third stretchable region, and the rigidity value of the absorber is Disposable diapers that are 0.03 to 0.15 N · cm are disclosed. In patent document 2, it makes it the subject to improve the fitting property of a disposable diaper and to prevent the leakage of excretory fluid by suppressing the shift | offset | difference of an absorber.

JP 2016-34341 A JP 2009-240695 A

As described above, various studies have been made in order to improve the fit of the absorber and eliminate the uncomfortable feeling when worn. For example, in the prior art, it has been studied to improve the fit of the absorber end and prevent the leakage of excretory fluid by pressing the absorber end with a stretchable member extending in the width direction. However, when the end of the absorbent body is pressed with an elastic member extending in the width direction, wrinkles may occur in the absorbent body due to the elasticity of the elastic member, and in such a case, it occurs between the absorbent body and the skin. Leakage of excretory fluid may occur from the gap. That is, in the conventional absorbent article in which the end of the absorbent body is pressed with a stretchable member extending in the width direction, the fit of the absorbent body is insufficient, and a sense of incongruity due to the occurrence of wrinkles (feeling of wrinkle), There was a sense of incongruity due to the rigidity of the absorber, and the wearing feeling tended to deteriorate.

Therefore, in order to solve the problems of the conventional technology, the present inventors have provided an absorbent article that has an absorbent body exhibiting high fit and can prevent leakage of excretory fluid. We proceeded with examination. Furthermore, the present inventors have also studied for the purpose of providing an absorbent article in which the uncomfortable feeling caused by the occurrence of wrinkles in the absorbent body and the uncomfortable feeling caused by the rigidity of the absorbent body are reduced.

As a result of intensive studies to solve the above-mentioned problems, the present inventors have provided a groove portion in the absorbent body and traversed at least a part of the groove portion existing in the longitudinal end region of the absorbent body with the elastic member. It has been found that, by superimposing in this manner, the fit of the absorber can be improved and the uncomfortable feeling caused by the deformation and rigidity of the absorber can be eliminated.
Specifically, the present invention has the following configuration.

[1] It is divided in the longitudinal direction into a front body that contacts the wearer's abdomen, a back body that contacts the back of the wearer, and a crotch located between the front body and the back body,
An absorber disposed from the front body to the back body;
A plurality of stretchable members extending in the width direction provided in the longitudinal direction end region of both the front body and the back body, or an absorbent article,
The absorber has a groove,
A part of the groove is present in the longitudinal end region of the absorber,
At least one of the elastic members partially overlaps at least one of the longitudinal end region of the absorbent body from the skin non-contact surface side of the absorbent body,
The elastic article which has overlapped with the longitudinal direction end part field of an absorber is an absorptive article which has crossed at least one part of the slot which exists in the longitudinal direction end part field of an absorber.
[2] The absorbent article according to [1], wherein the groove extends intermittently or continuously in the longitudinal direction of the absorbent body.
[3] The absorbent article according to [1] or [2], wherein the area of the groove is 5 to 50% with respect to the area of the absorber.
[4] The absorption according to any one of [1] to [3], wherein both or any one of the longitudinal end regions of the absorber has a narrow region narrower than the maximum dorsal belly width of the absorber. Sex goods.
[5] The absorbent article according to [4], wherein the minimum width of the narrow region is 50 to 90% with respect to the maximum width of the back of the absorbent body.
[6] The elastic member superimposed on the longitudinal end region of the absorber is superimposed on a region of 5 to 10 mm from the longitudinal end edge of the absorber toward the inside in the longitudinal direction [1] to [ 5] The absorbent article in any one of.
[7] The absorption according to any one of [1] to [6], wherein the average thickness of both or one of the longitudinal end regions of the absorber is thinner than the average thickness of the central region of the absorber. Sex goods.
[8] The tensile strength (N / cm) in the width direction of the longitudinal end region overlapping member of the front body or the back body is Fe, and is arranged closer to the longitudinal end portion side than the longitudinal end region overlapping member. The absorbent article according to any one of [1] to [7], wherein Fw> Fe when the tensile strength (N / cm) in the width direction of the stretchable region constituting member is Fw.

According to the present invention, it is possible to obtain an absorbent article having a high fit of the absorbent body and a sense of incongruity caused by the deformation and rigidity of the absorbent body.

FIG. 1 is an external perspective view of a disposable diaper according to an embodiment of the present invention. FIG. 2 is a developed plan view of a disposable diaper according to an embodiment of the present invention. FIG. 3 is a developed plan view of a disposable diaper according to an embodiment of the present invention. 4 is a cross-sectional view taken along line YY shown in FIG. FIG. 5 is a partially enlarged view of the cross-sectional view taken along the line YY shown in FIG. 2, and is an enlarged view for explaining the structure of the groove. FIG. 6 is a plan view for explaining a groove portion formed in the absorber. FIG. 7 is an enlarged view of the groove portion of the absorber. FIG. 8 is a plan view illustrating another configuration of the absorber. FIG. 9 is a plan view illustrating another configuration of the absorber. FIG. 10 is a plan view for explaining another configuration of the absorber. FIG. 11 is a plan view illustrating another configuration of the absorber.

Hereinafter, the present invention will be described in detail. The description of the constituent elements described below may be made based on representative embodiments and specific examples, but the present invention is not limited to such embodiments.

In the present specification, the “front body” means a portion that covers the abdomen side (front of the body) of the wearer when the wearer wears a diaper. “Inseam” means a portion that covers the inseam of the wearer when the diaper is worn on the wearer. The “rear body” means a portion that covers the back side (back of the body) of the wearer when the wearer wears a diaper.
In the present specification, the “longitudinal direction” basically means a direction (Y direction) connecting the front body and the back body of the disposable diaper. The “width direction” basically means a direction (X direction) orthogonal to the longitudinal direction of the disposable diaper. In the present specification, “A to B” means “A to B”.

(Absorbent article)
The present invention relates to an absorbent article having a front body in contact with the wearer's abdomen, a back body in contact with the back of the wearer, and a crotch portion positioned between the front body and the back body. The front body, the back body, and the crotch part located between the front body and the back body are divided in the longitudinal direction. The absorbent article of the present invention has an absorbent body arranged from the front body to the back body, and a plurality of stretches extending in the width direction provided in the longitudinal end region of both or either of the front body and the back body. It has a member. Here, an absorber has a groove part and a part of groove part exists in the longitudinal direction edge part area | region of an absorber. And at least one of the elastic members is partially superposed on at least one of the longitudinal end regions of the absorbent body from the skin non-contact surface side of the absorbent body. It traverses at least a part of the groove existing in the end region.

Here, the longitudinal end region is a region existing at the end in the longitudinal direction (Y direction), and such an end region is provided along the width direction (X direction). The longitudinal end region of the absorbent body refers to a region from the longitudinal edge of the absorbent body to a distance of 15% of the full length of the absorbent body inward in the longitudinal direction. That is, when the longitudinal total length of the absorber is Lmm, the longitudinal length of the longitudinal end region of the absorber is 0.15 × Lmm, and such regions are provided at both ends of the absorber. Yes. For this reason, when the area other than the end area in the longitudinal direction of the absorber is the central area, the longitudinal length of the central area is 0.7 × L mm.

In the absorbent article of the present invention, the absorbent body is provided with a groove portion, and the stretchable member is overlapped so as to cross at least a part of the groove portion existing in the longitudinal end region of the absorbent body. Can be increased. In particular, the fit of the end of the absorber can be enhanced. In the present invention, since the absorbent body also has a groove portion in the longitudinal end region, even if the absorbent body end portion is pressed by an elastic member, the occurrence of wrinkles and twists on the absorbent body is suppressed. Is done. When wrinkles or creases occur in the absorbent body, a gap is formed between the skin and the absorbent body, so excretory fluid may leak out from the gap. However, in the present invention, the occurrence of wrinkles and creases is suppressed, and absorption occurs. Since the end of the body comes into contact with the wearer's skin without any gaps, it is possible to more effectively suppress leakage of excretory fluid. In the present invention, the fit of the absorbent body can be evaluated by the fact that a gap is not easily formed between the skin and the absorbent body and that the absorbent body easily follows the movement of the wearer's body.

Moreover, in the absorbent article of the present invention, since the occurrence of wrinkles in the absorber is suppressed, the uncomfortable feeling caused by the occurrence of wrinkles in the absorber is reduced. That is, an unpleasant sensation such as a feeling of stiffness (stiffness or firmness) felt by wrinkles on the absorber is removed. And discomfort resulting from the rigidity of absorber itself can also be reduced by providing a groove part in an absorber.

By providing the groove on the absorbent body, the contact area between the absorbent body (absorber body) and the skin can be reduced, so that the sticky feeling and the uncomfortable feeling associated therewith can be eliminated. Moreover, since the rigidity of an absorber can be relieve | moderated by providing a groove part in an absorber, the uncomfortable feeling at the time of wear can be reduced. On the other hand, since the groove portion can be a flow path for excretory liquid, there is a tendency that the excretion liquid leaks easily. In the present invention, the leakage of excretory fluid can be suppressed even when the groove is provided by superimposing the elastic member so as to cross at least a part of the groove.

The form of the absorbent article of the present invention is not particularly limited. Examples of the absorbent article include disposable diapers and sanitary napkins. Disposable diapers are roughly classified into pants-type disposable diapers and tape-type disposable diapers. The pants-type disposable diaper is a disposable diaper having a structure in which both sides of a front body and a back body are joined in advance. The pants-type disposable diaper may be a cross-linked type having a configuration in which the absorbent main body cross-links between the front body exterior body and the back body exterior body formed separately. Moreover, the pants-type disposable diaper is an integral type in which the absorbent body is fixed around the crotch part to an exterior body that is integrally formed by hanging from the front part through the crotch part to the back part. Also good. The tape-type disposable diaper is a disposable diaper in which a joining tape is attached to both sides of the front body or the back body, and the front body and the back body are joined using the joining tape when worn.
Below, among these various types of absorbent articles, a pants-type disposable diaper is taken as an example to specifically describe the contents of the present invention.

(Pant-type disposable diaper structure)
FIG. 1 is a perspective view showing an example of an absorbent article 100 (hereinafter also referred to as a disposable diaper) viewed from the front body side. Moreover, FIG.2 and FIG.3 is an expanded view which shows the example of a disposable diaper. FIG. 2 shows a state in which the disposable diaper is viewed from the skin contact surface side, and FIG. 3 shows a state in which the disposable diaper is viewed from the skin non-contact surface side.

As shown in FIGS. 1 to 3, the disposable diaper is applied to the front body 1 that contacts the abdomen of the wearer, the back body 2 that contacts the back of the wearer, and the inseam of the wearer. It has a crotch 3. In the present embodiment, in the disposable diaper, the front body 1 is configured by the front body exterior body 10, and the back body 2 is configured by the back body exterior body 20. The absorber main body 30 is cross-linked to the crotch 3 between the front body exterior body 10 and the back body exterior body 20. That is, one end of the absorber main body 30 is fixed to the front body exterior body 10, and the other end of the absorber main body 30 is fixed to the back body exterior body 20. For example, a hot melt adhesive or the like is used for fixing each exterior body and the absorber main body 30.

2 and FIG. 3 are assembled into the state shown in FIG. 1 by joining the widthwise ends of the front body exterior body 10 and the back body exterior body 20 from the developed state shown in FIGS. As shown in FIG. 1, the waist opening 4 is formed by the upper end edge of the front body exterior body 10 and the upper end edge of the rear body exterior body 20. Moreover, the leg opening part 5 located around a wearer's leg part at the time of mounting | wearing is formed by joining the both ends of the front body exterior body 10 and the back body exterior body 20 mutually.

As shown in the plan view of FIG. 2, a plurality of elastic members 43 extending in the width direction are provided in the longitudinal end region of the disposable diaper. In FIG. 2, the elastic member 43 is indicated by a dotted line. As FIG. 2 shows, the some expansion-contraction member 43 is arrange | positioned at predetermined intervals in the longitudinal direction of a disposable diaper. Here, the elastic member 43 provided in the longitudinal end region of the disposable diaper may be referred to as a waist elastic member. The waist elastic member is distinguished from the Tammy elastic member subjected to the Tammy cut described later. In the front body exterior body 10 or the back body exterior body 20, each waist elastic member is not cut in the middle. It is a series of elastic members.

The plurality of elastic members 43 are fixed in a state of being sandwiched between the inner sheet 41 or the inner sheet 45 and the outer sheet 42, and at least a part of each of the elastic members 43 is the inner sheet 41, the inner sheet 45, and the outer sheet 42. It is fixed to at least one selected from. In addition, between the inner sheet | seat 41 and the outer sheet | seat 42, at least 1 elastic member 43 is inserted | pinched and the edge along the waist opening part 4 of a disposable diaper is formed.

At least a part of the plurality of elastic members 43 is fixed between the inner sheet 41 or the inner sheet 45 and the outer sheet 42 in a state of extending along the width direction. Note that all of the elastic member 43 may be fixed between the inner sheet 41 or the inner sheet 45 and the outer sheet 42, but only a part of the elastic member 43 is the inner sheet 41 or the inner sheet 45 and the outer sheet. It is the state fixed between 42, and the other part does not need to be in the state fixed to each sheet | seat. By fixing only a part of the elastic member 43, the waist region can be easily moved in accordance with the movement of the body, and the fit at the time of wearing can be improved. Further, by fixing only a part of the elastic member 43, the absorbent body is less likely to be twisted or wrinkled, giving a clean impression as an appearance when the disposable diaper is worn, and to a caregiver (mother, etc.) who wears it. You don't have to feel uncomfortable.

The stretch rate when the plurality of elastic members 43 are fixed is, for example, preferably 150 to 400%, more preferably 200 to 380%, and further preferably 250 to 360%. The “stretch rate” is a value indicating the ratio of the length of the stretchable member in the stretched state when the length (original size) of the stretchable member in the non-stretched state (free state) is 100%. is there. As described above, when the stretchable member 43 in the stretched state is fixed between the inner sheet 41 and the outer sheet 42, when the stretchable member 43 contracts, wrinkles (gather) are formed on the inner sheet 41 and the outer sheet 42. It is formed.

When the elastic member 43 is sandwiched and fixed between the inner sheet 41 or the inner sheet 45 and the outer sheet 42, for example, an adhesive is applied to the elastic member 43 itself, and the elastic member 43 to which the adhesive is applied is The sheet 41 or the inner sheet 45 and the outer sheet 42 may be sandwiched. At this time, the adhesive may be applied only to a part of the elastic member 43, and in such a case, it is preferable to apply the adhesive to both ends of the elastic member 43. Moreover, after apply | coating an adhesive agent to the inner sheet | seat 41 or the inner sheet | seat 45, and / or the outer sheet | seat 42, the expansion-contraction member 43 can also be pinched | interposed and fixed between these sheets.

In the cross-sectional view shown in FIG. 4, the inner sheet 41 and the outer sheet 42 are provided separately, but the inner sheet 41 and the outer sheet 42 may be connected and formed integrally. That is, one sheet member may be folded at the longitudinal edge of the disposable diaper, and a plurality of elastic members 43 may be sandwiched therebetween and fixed. In this case, the portion located inside the fold line is the inner sheet 41, and the portion located outside the fold line is the outer sheet 42. Thus, in this invention, it is also possible to comprise the inner sheet | seat 41 and the outer sheet | seat 42 with one sheet | seat member.

As the elastic member 43, it is preferable to apply a thread-like elastic rubber material or a belt-like elastic rubber material. As such a rubber material, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, or polyester can be used.

FIG. 4 is a cross-sectional view taken along line YY of the developed plan view shown in FIG. In this embodiment, as FIG. 4 shows, the inner side sheet | seat 41 is extended in the direction of the crotch part 3 of a diaper. And a part of inner sheet | seat 41 has overlapped on the edge part of the longitudinal direction of the absorption part main body 30 (skin contact surface). In this way, by fixing a part of the inner sheet 41 on the absorbent body 30, it is possible to improve the fixing stability of the absorbent body 30, the front body exterior body 10, and the back body exterior body 20.

Each of the front body exterior body 10 and the back body exterior body 20 may have an inner sheet 45 as a constituent member. As shown in FIG. 4, in the present embodiment, the outer sheet 42 extends in the direction of the crotch 3, and a part of the outer sheet 42 is located on the skin non-contact surface side of the absorbent body 30. . In this case, the inner sheet 45 is disposed on the skin contact surface side of the extended portion of the outer sheet 42. And between the extension part of the outer sheet | seat 42, and the inner sheet | seat 45, it exists in the state in which the one or several elastic member 43 was pinched | interposed.
In addition, the front body exterior body 10 and the back body exterior body 20 do not need to have the inner sheet 45 as a constituent member. In this case, you may extend the inner side sheet | seat 41 to the skin non-contact surface side of the absorption part main body 30. FIG.

The absorbent main body 30 is held in a state of being bridged between the front body exterior body 10 and the back body exterior body 20, and is located in the crotch portion of the wearer when the disposable diaper is worn, such as urine excreted by the wearer. Absorbs and retains liquids. As shown in FIG. 4, the absorber main body 30 includes an absorber 31, a top sheet 32, a back sheet 33, a cover sheet 34, and a pair of three-dimensional gathers 35.

The absorber 31 is a member for absorbing a liquid such as urine and holding the absorbed liquid. The absorber 31 is disposed between the liquid-permeable top sheet 32 and the liquid-impermeable back sheet 33. The absorber 31 has a function of absorbing the liquid that has passed through the top sheet 32 and is made of an absorbent material. A well-known material can be employ | adopted for the absorptive material which comprises the absorber 31. FIG. As an absorptive material, it is good also as using a flap pulp, a superabsorbent polymer, or a hydrophilic sheet, for example. The absorber 31 is preferably encapsulated by the core wrap sheet 36. As the core wrap sheet 36, tissue paper, absorbent paper, a nonwoven fabric subjected to hydrophilic treatment, or the like can be used as appropriate.

The top sheet 32 is a member that is in direct contact with the skin of the wearer's crotch and allows liquid such as urine to pass through the absorber 31. For this reason, the top sheet 32 is made of a liquid-permeable material having high flexibility. Moreover, the top sheet 32 is arrange | positioned so that the skin contact surface side of the absorber 31 may be coat | covered. Examples of the liquid permeable material constituting the top sheet 32 are a woven fabric, a nonwoven fabric, or a porous film. Moreover, as the top sheet 32, it is good also as what used the fiber of the thermoplastic resin like a polypropylene, polyethylene, polyester, nylon, for example, and also making it the nonwoven fabric further.

The absorber 31 has a groove 37. As shown in FIG. 4, the groove 37 may be formed only in the absorber 31. In this case, the core wrap sheet 36 and the top sheet 32 do not have a groove. Further, the groove 37 may be formed in a laminated body of the core wrap sheet 36 and the top sheet 32 in addition to the absorber 31. FIG. 5 is an enlarged cross-sectional view showing a part of the groove 37 in FIG. In FIG. 5, a groove portion 37 is formed in the laminated body of the absorbent body 31, the core wrap sheet 36 laminated on the skin contact surface side of the absorbent body 31, and the top sheet 32.

The back sheet 33 is a member for preventing the liquid that has passed through the top sheet 32 and absorbed by the absorber 31 from leaking to the outside of the diaper. For this reason, the back sheet 33 is made of a liquid-impermeable material. The back sheet 33 covers the absorbent body 31 from the skin non-contact surface side in order to prevent liquid leakage from the bottom surface of the absorbent body 31. An example of the impermeable material constituting the back sheet 33 is a liquid impermeable film made of polyethylene resin. However, in order to ensure air permeability, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed.

The cover sheet 34 is a member for reinforcing the back sheet 33 and improving its feel. The cover sheet 34 is bonded to the skin non-contact surface side of the back sheet 33. As the material constituting the cover sheet 34, a woven fabric or a non-woven fabric is used. In particular, it is preferable to use a nonwoven fabric or a wet nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester as a material constituting the cover sheet 34.

As shown in FIG. 2, the absorber main body 30 may include a pair of three-dimensional gathers 35. The pair of three-dimensional gathers 35 are members that stand along both side edges of the absorber 31 and prevent side leakage of urine excreted by the wearer. Each of the three-dimensional gathers 35 is provided with a three-dimensional gather stretchable material at the tip thereof, and rises toward the wearer's skin contact direction when the stretchable material contracts. For this reason, the pair of three-dimensional gathers 35 serves as a urine leakage barrier, and urine that has not permeated through the top sheet 32 or urine that has not been absorbed by the absorber 31 leaks from the leg opening of the disposable diaper. Prevent side leakage. The three-dimensional gather 35 can employ a known configuration used in conventional disposable diapers. The three-dimensional gather 35 can be formed, for example, by sandwiching and fixing a stretched three-dimensional gather elastic material between the layers of the water-repellent sheet. As the water-repellent sheet, for example, a non-woven sheet obtained by a production method such as card embossing or spunbond can be used, and it is particularly preferable to use a non-woven sheet such as SMS or SMMS having high waterproofness.

2, each of the front body exterior body 10 and the back body exterior body 20 may be provided with a tammy expansion / contraction member 46. The tammy expansion / contraction member 46 is a member disposed on the crotch 3 side with respect to the end region in the longitudinal direction of the front body exterior body 10 and the back body exterior body 20. That is, the tammy expansion / contraction member 46 is an expansion / contraction member provided in the tammy region that is closer to the crotch 3 than the waist region. Usually, in the front body exterior body 10 and the back body exterior body 20, the region from the longitudinal edge of the absorber to the respective longitudinal edges of the front body exterior body 10 and the back body exterior body 20 is referred to as a waist region. A region closer to the crotch 3 than that region is referred to as a tammy region. As described above, when the waist region and the tammy region are distinguished, in the present invention, at least one of the elastic members 43 (waist elastic members) is provided in the tammy region.

In this specification, the Tammy elastic member 46 is an elastic member that is cut (cut) at the center in the width direction. The above-described elastic member 43 is an elastic member mainly provided in the waist region, and such elastic members 43 are arranged in the width direction in the front body exterior body 10 and the back body exterior body 20. The Tammy stretchable member 46 is distinguished from the stretchable member 43 in the presence or absence of the cut.

Cutting the elastic member like the Tammy elastic member 46 is a method called Tammy cut. When the tammy expansion / contraction member 46 is disposed, similarly to the expansion / contraction member 43, it is fixed between the extending portion of the outer sheet 42 and the inner sheet 45 in an extended state along the width direction of the diaper. And after fixing, it cuts in the midpoint of the width direction of the Tammy expansion-contraction member 46. FIG. By giving such a tammy cut, it can be set as the structure which does not tighten an abdomen too much. In addition, since the tammy expansion / contraction member 46 partially contracts due to the tammy cut, the tammy expansion / contraction member 46 is not stretched in the center region in the width direction of the front body exterior body 10 and the back body exterior body 20.

(Configuration of groove)
In the present invention, the absorber 31 has a groove 37. In the absorber 31, a region other than the groove portion 37 can be called a flat portion. The flat portion includes a region surrounded by the groove portion 37 and a region not surrounded by the groove portion 37. Here, the “groove portion” means that a part or all (continuous or intermittent) is constituted by a concave portion. Moreover, a recessed part points out the area | region where the thickness of the absorber 31 is thinner than the maximum thickness of a flat part, and the thickness of a recessed part has 80% or less of the thickness of a flat part.

FIG. 6 is a plan view for explaining an example of a configuration pattern of the grooves 37 included in the absorber 31. As shown in FIG. 6, the groove portion 37 is preferably formed to extend in the longitudinal direction of the absorber 31. In FIG. 6, a plurality of linear groove portions 37 are provided, and a lattice-like flat portion having an outer periphery surrounded by the groove portions 37 is formed. In FIG. 6, the groove portion 37 is formed as a continuous concave portion, and a pattern is formed so as to extend in the longitudinal direction of the absorber 31.

FIG. 7 is an enlarged view of a part of the groove 37 in FIG. FIG. 7A shows a groove portion 37 that is entirely constituted by a concave portion, and FIG. 7B shows a groove portion 37 that is partially constituted by a concave portion. In Fig.7 (a), the groove part 37 has a substantially uniform depth, and the thickness of the absorber 31 of the area | region in which the groove part 37 was formed is substantially uniform. On the other hand, in FIG.7 (b), the groove part 37 is formed of a series of recessed parts 37a. In addition, by arranging the recessed portions 37a at a predetermined interval or less, the absorber 31 in the vicinity of the recessed portions 37a is pushed down to become a portion slightly recessed from the flat portion. That is, in FIG.7 (b), the groove part 37 is comprised from the recessed part 37a and the recessed part between the adjacent recessed parts 37a. In FIG. 7B, it is preferable that the space between the adjacent recesses 37a is recessed rather than the flat portion, but it does not have to be recessed.

The groove part 37 functions as a flow path for excretion liquid in the absorber 31. That is, the groove part 37 can also be called a liquid flow path. By providing such a groove portion 37 in the absorber 31, the groove portion 37 can exert a capillary force. Here, the capillary force is a force capable of circulating the excretory fluid along the groove portion 37. Thereby, the absorber 31 can diffuse the excretory fluid along the flow path, and can rapidly absorb the excreted fluid excreted in a large amount in a wide area of the absorber 31. Moreover, the absorption of excretory fluid by the absorbent material can be efficiently performed without biasing the excretion of excretory fluid to only a part of the absorbent material constituting the absorber 31.

The area of the groove portion 37 is preferably 5 to 50%, more preferably 5 to 45%, and still more preferably 8 to 30% with respect to the area of the absorber 31. Further, the width of the groove portion 37 is preferably 1 to 10 mm, and more preferably 2 to 5 mm. By setting the area and width of the groove 37 within the above range, the fit of the absorber 31 can be more effectively enhanced. Moreover, the groove part 37 can fulfill | perform the function as a flow path efficiently.

The absorber 31 has a flat part surrounded by the groove part 37 and a flat part not surrounded by the groove part 37. Here, the flat part surrounded by the groove part 37 is a flat part surrounded by 50% or more of the outer periphery by the groove part 37, and other flat parts are not surrounded by the groove part 37. It is called a flat part. The diameter R1 of the maximum inscribed circle of the flat portion surrounded by the groove portion 37 by 50% or more of the outer periphery is preferably 10 to 50 mm, and more preferably 15 to 40 mm. The maximum inscribed circle of the flat portion surrounded by 50% or more of the outer periphery by the groove portion 37 is shown as a dotted circle in FIG. 6, and the diameter of the circle is shown as the maximum inscribed circle R1.

The diameter R1 of the maximum inscribed circle of the flat portion surrounded by 50% or more of the outer periphery by the groove portion 37 is preferably 5 to 20 times the width of the groove portion 37, more preferably 6 to 12 times. preferable. By providing a flat part surrounded by 50% or more of the outer circumference so as to satisfy the above conditions, the fit of the absorber 31 can be more effectively enhanced. Moreover, the contact | adherence area of the absorber 31 (absorption part main body 30) and skin can be controlled, and a sticky feeling and the uncomfortable feeling accompanying it can be reduced.

In FIG. 6, the longitudinal end region of the absorber 31 is represented as a region indicated by 31a. Here, the longitudinal end region 31a of the absorbent body 31 refers to a region from the longitudinal edge of the absorbent body 31 to a distance of 15% of the full length of the absorbent body inward in the longitudinal direction. That is, when the total length of the absorber is Lmm, the longitudinal length of the longitudinal end region 31a of the absorber 31 is 0.15 × Lmm. In the present specification, a region other than the end region 31a in the longitudinal direction of the absorber 31 may be referred to as a central region.

In the present invention, a part of the groove 37 is present in the longitudinal end region 31 a of the absorber 31. As shown in FIG. 6, a part of the groove portion 37 extends so as to reach the longitudinal end region 31a. The groove portion 37 is preferably present intermittently or continuously extending in the longitudinal direction of the absorber 31, and more preferably continuously extending in the longitudinal direction of the absorber 31.

In addition, the ratio (area%) which the groove part 37 occupies in the longitudinal direction edge part area | region 31a and a center area | region may differ. For example, in the longitudinal direction end region 31a, the ratio (area%) occupied by the groove portion 37 can be reduced, and the ratio can be increased in the central region. Thereby, it is also possible to make it easier to prevent leakage of excretory liquid while effectively reducing the rigidity of the absorber 31.

In the present invention, the plurality of stretchable members 43 provided in the longitudinal direction end region of both or one of the front body 1 and the back body 2 extend in the width direction from the skin non-contact surface side of the absorbent body 31. It overlaps with at least one of the longitudinal end regions 31 a of the absorber 31. And this elastic member 43 has crossed at least one part of the groove part 37 which exists in the longitudinal direction edge part area | region of an absorber. FIG. 3 shows a state in which the disposable diaper is viewed from the skin non-contact surface side. In FIG. 3, the shape of the absorber 31 that cannot be visually recognized is drawn with a dotted line for convenience. As shown in FIG. 3, one of the elastic members 43 is superposed on the longitudinal end region 31 a of the absorber 31. In FIG. 3, a state in which a part of one elastic member 43 is superimposed on the longitudinal end region 31 a is illustrated, but two or more elastic members 43 may be overlapped.

In FIG. 6, the elastic member 43 superimposed on the longitudinal end region 31a of the absorber 31 is indicated by a dotted line. As shown in FIG. 6, the elastic member 43 crosses at least a part of the groove portion 37 present in the longitudinal end region 31 a of the absorber 31. Here, when the elastic member 43 and the groove portion 37 are overlapped on a plane, the elastic member 43 crosses so that the minimum angle among the angles formed by the elastic member 43 and the groove portion 37 is 15 to 90 °. Just do it. That is, the minimum angle among the angles formed by the elastic member 43 and the groove portion 37 in FIG. 6 may be 15 to 90 °. Further, the elastic member 43 only needs to cross at least one of the grooves 37 present in the longitudinal end region 31a, preferably crosses two or more, and crosses three or more. More preferably.

The stretchable member 43 superimposed on the longitudinal end region 31a of the absorber 31 is preferably superimposed on a region of 5 to 10 mm from the longitudinal end edge of the absorber 31 toward the inside in the longitudinal direction. By arranging the expansion / contraction member 43 in a predetermined region in this way, it is more effective that the absorber portion bulges from the outer body of the diaper even when the absorber 31 swells by absorbing excretory fluid. Can be prevented. In addition, by arranging the stretchable member 43 superimposed on the longitudinal end region 31a of the absorbent body 31 in a predetermined region, the central region of the absorbent body 31 can easily follow the movement of the exterior body. The fit of the entire body 31 can be further improved.

The elastic member 43 may be superimposed on both of the longitudinal end regions 31a of the absorber 31, but may be superimposed only on one side. In this case, the elastic member 43 is preferably superimposed on the longitudinal end region 31a existing on the front body 1 side.
Infants have a body shape that is unique to infants, where the waistline narrows from the abdomen toward the crotch, and the gap between the absorbent body and the body tends to occur due to contraction around the abdomen such as after breathing or after meals. For this reason, it can suppress that a gap arises and can improve fit nature by superimposing elastic member 43 on longitudinal direction end part field 31a on the abdominal side.

FIG. 8 shows another embodiment in which a plurality of grooves 37 are provided in parallel with the long axis of the absorber. In FIG. 8, the groove portions 37 are provided at equal intervals in the width direction. In FIG. 8, all the groove portions 37 extend to the end region 31 a in the longitudinal direction of the absorber 31, and the elastic members 43 cross all the groove portions 37. In FIG. 8, the region between the groove portions 37 provided at equal intervals in the width direction becomes a flat portion surrounded by 50% or more of the outer periphery. Also in FIG. 8, the maximum inscribed circle of the flat portion is shown as a dotted circle, and the diameter of the circle is shown as the maximum inscribed circle R1.

FIG. 9 shows an example in which the two groove portions 37 are formed in a zigzag shape so that the convex portions face each other in the width direction. In FIG. 9, the region surrounded by the two zigzag linear grooves 37 is a flat portion surrounded by 50% or more of the outer periphery, and the maximum inscribed circle of the flat portion is a dotted circle in FIG. Will be shown.

FIG. 10 shows an example in which elliptical grooves 37 are regularly arranged. In FIG. 10, all the groove portions 37 have an elliptical shape, but the groove portions 37 that form only a part of the elliptical shape may be mixed. In FIG. 10, there are two flat portions surrounded by 50% or more of the outer periphery. The first is present inside the ellipse formed by the groove 37. Such a maximum inscribed circle of the flat portion is indicated by a large circle among the dotted circles in FIG. The diameter of the maximum inscribed circle is indicated as R1. The second flat portion is an outer portion of the ellipse and is a portion surrounded by four ellipses formed by the groove portions 37. The maximum inscribed circle of the flat portion is shown by a small circle among dotted circles in FIG. The diameter of the maximum inscribed circle is indicated as R2. Even when there are two types of maximum inscribed circles as described above, it is preferable that both of the maximum inscribed circles R1 and R2 satisfy the above-described preferable conditions.

The groove part 37 may extend to the longitudinal edge of the absorbent body 31 and may not reach the longitudinal edge of the absorbent body 31. When the groove part 37 extends to the longitudinal edge of the absorbent body 31, a small gap is formed between the absorbent body 31 and the skin, so that air permeability can be improved. On the other hand, when the groove part 37 does not reach the longitudinal edge of the absorber 31, the leakage of excretory liquid can be effectively suppressed.

The groove part 37 may be formed only in the absorbent body 31, and is formed in the laminated body of the absorbent body 31, the core wrap sheet 36 laminated on the skin contact surface side of the absorbent body 31, and the top sheet 32. It may be done. When the groove part 37 is formed only in the absorber 31, the excretory liquid tends to stay on the top sheet, and therefore, it tends to be suppressed that the excretory liquid leaks from the end of the absorbent part 31. On the other hand, when the groove part 37 is formed in the laminated body of the core wrap sheet 36 and the top sheet 32 laminated on the skin contact surface side of the absorbent body 31, while absorbing the rigidity of the groove part 37, the absorbent part The contact area between the main body 30 and the skin can be controlled, and a sticky feeling and a sense of incongruity associated therewith can be reduced.

The groove part 37 can be formed by reducing the basis weight of the absorbent body of the groove part or embossing (squeezing) the absorbent body 31. When reducing the basis weight of the absorbent body of the groove portion 37, the forming drum is provided with an uneven surface on the outer periphery of the drum according to the shape of the groove portion 37 in the step of forming the absorbent material constituting the absorbent body 31 into a sheet shape having a predetermined shape. It is preferable. In the forming drum, since suction is performed toward the inside of the drum, the absorbent body 31 in which the groove portion 37 is formed along the uneven surface on the outer periphery of the drum is obtained. Thereafter, core wrap sheets 36 are laminated on the upper and lower surfaces of the absorbent body 31, respectively. In addition, when reducing the basic weight of the absorber of the groove part 37 part, you may make the basic weight of the absorber of a groove part zero.

When the groove part 37 is formed by embossing (squeezing) the absorbent body 31, the embossing may be performed from the skin facing surface side, the skin non-facing surface side, or the both surface side of the absorbent body 31. When embossing is performed from the skin facing surface side, the top sheet 32 may be laminated after embossing the absorber 31, or the embossing may be performed after laminating the top sheet 32 on the absorber 31. . Concavities and convexities are formed on the embossing roll according to the shape of the groove portion 37, and the groove portion 37 is formed by pressing the embossing roll while rotating from the top sheet 32 side. In the embossing process, the top sheet 32 and the absorbent body 31 encapsulated by the core wrap sheet 36 may be bonded at the same time.

(Absorber shape)
In the present invention, both or one of the longitudinal end regions of the absorber 31 may have a narrow region. The narrow region is a region provided in the end region in the longitudinal direction of the absorbent body 31 and refers to a region narrower than the maximum width of the back of the absorbent body. Here, the dorso-abdominal maximum width of the absorbent body is the maximum width of the absorbent body 31 in a region where the absorbent body 31 overlaps the front body exterior body 10 or the back body exterior body 20. In this specification, when the absorber 31 is divided into a longitudinal end region and a main body region other than the end region, the maximum width of the dorsal belly of the absorbent body 31 is the longitudinal direction of the main body region formed by the longitudinal end region. It can be said that it is the width of the end on the end region side.

The narrow region refers to a region that is narrower than the width of the end on the longitudinal end region side of the main body region of the absorber 31, and refers to a region where the minimum width of the narrow region is narrowed to 85% or less. The aspect having the narrow region of the present invention is distinguished from the aspect in which the corners of the absorber are slightly rounded, for example.

FIG. 11 is a plan view for explaining the shape of the absorber 31. As shown in FIG. 11, the absorber 31 has a narrow region 31b. In addition, the absorber 31 may have a rectangular outer shape, or may have a shape (so-called hourglass shape) in which the central portion in the longitudinal direction is constricted as shown in FIG. In addition, when the absorber 31 is an hourglass shape, the width | variety of a center area | region is narrow, but such an area | region differs from the narrow area | region provided in a longitudinal direction edge part area | region.

The minimum width of the narrow region 31b is preferably 50 to 85%, more preferably 60 to 85% with respect to the maximum dorsal belly width of the absorber. Here, the minimum width of the narrow region 31b is represented as P in FIG. 11, and the dorsoventral maximum width of the absorber is represented as Q. In the present invention, the value of P / Q is preferably 0.5 to 0.85, more preferably 0.6 to 0.85, and further preferably 0.7 to 0.85. preferable. By providing the narrow region 31b that satisfies the above conditions in the absorbent body 31, the fit of the end region of the absorbent body 31 is enhanced, thereby preventing the excretory fluid from leaking. Moreover, by providing a narrow area | region in the absorber 31, expression of the rigidity of an absorber can be relieve | moderated and the discomfort felt when wearing a disposable diaper can be eliminated.

The longitudinal length of the narrow region 31b is preferably 1 to 20%, more preferably 2 to 15%, and more preferably 3 to 10% with respect to the longitudinal length of the absorber. Further preferred. Here, the length of the narrow region 31b in the longitudinal direction is represented as S in FIG. 11, and the length of the absorbent body in the longitudinal direction is represented as R. In the present invention, the value of S / R is preferably 0.01 to 0.2, more preferably 0.02 to 0.15, and further preferably 0.03 to 0.1. preferable. By providing the narrow region 31b so as to satisfy the above conditions, the fit of the end region of the absorber 31 is enhanced, and the excretion fluid can be prevented from leaking. Furthermore, the uncomfortable feeling at the time of wear resulting from a deformation | transformation and rigidity of an absorber can be eliminated.

The length (R) in the longitudinal direction of the absorbent body 31 is the length from the longitudinal edge of the front body exterior body 10 of the absorbent article to the longitudinal edge of the rear body exterior body 20 (full length in the longitudinal direction of the absorbent article). In contrast, it is preferably 70 to 90% or less. Conventionally, in order to reduce the sense of incongruity due to the rigidity of the absorber, it has been studied to reduce the size of the absorber itself, but when the size of the absorber is reduced, the tendency of the rigidity to decrease is not Although there was a leak of excretory fluid. The present invention is characterized in that the absorbent body 31 is provided with a narrow region without reducing the longitudinal length (R) of the absorbent body 31, and such an aspect suppresses leakage of excretory fluid. However, the uncomfortable feeling at the time of wearing resulting from a deformation | transformation and rigidity of an absorber can be reduced.

The narrow region 31b is preferably provided in both the narrow region 31b on the upper end side in the longitudinal direction of the absorber 31 and the narrow region 31b on the lower end side. It may be provided in any one selected from the narrow region 31b and the narrow region 31b on the lower end side. When the narrow region 31b is provided only in one of the narrow regions 31b, the narrow region 31b is preferably provided in the longitudinal end region disposed on the back body side.

When the narrow region 31b is provided in both the narrow region 31b on the upper end side in the longitudinal direction of the absorber 31 and the narrow region 31b on the lower end side, the narrow region 31b on the upper end side and the narrow region 31b on the lower end side are provided. The shape and size of the narrow region 31b are preferably the same, but may be different. For example, the size of the narrow region 31b of the longitudinal end region disposed on the back body side is made larger or smaller than the narrow region 31b of the longitudinal end region disposed on the front body side. You can also Moreover, the shape of each narrow area | region 31b can also be made into a different shape. For example, in diapers for infants, it is also preferable to appropriately change the shape and size of the narrow region for boys and girls.

The thickness of the absorber 31 may be substantially uniform in both the longitudinal direction and the width direction, but the average thickness of both or one of the longitudinal end regions is the average thickness of the central region of the absorber. It may be thinner. That is, the narrow region 31b may be a thin region. For example, when the average thickness of the narrow region 31b is ∨ and the average thickness of the central region in the longitudinal direction of the absorber 31 is W, ∨ / W may be 0.3 to 0.9. It may be 5 to 0.8. By adjusting the thickness of the absorbent body 31 as described above, the uncomfortable feeling caused by the absorbent body when worn is easily eliminated. On the other hand, when the thickness of the absorber 31 is substantially uniform in both the longitudinal direction and the width direction, it becomes easy to prevent a gap from being formed between the skin and the absorber, and the fit of the absorber end portion It becomes easy to prevent leakage of excretory fluid.

When the absorber 31 has the narrow region 31b, at least one of the elastic members 43 preferably overlaps at least one of the narrow regions 31b of the absorber 31. In this case, the groove portion 37 extends in the narrow region 31b, and the elastic member 43 crosses at least a part of the groove portion 37 existing in the narrow region 31b. When the narrow regions 31b are provided at both ends of the absorber 31, the stretchable member 43 only needs to overlap both or one of the narrow regions 31b. When the elastic member 43 is superimposed only on one of the narrow regions 31b, the elastic member 43 is preferably superimposed on the narrow region 31b existing on the front body 1 side. By stretching the stretchable member 43 on the narrow region 31a of the front body 1, it is possible to fit the end of the absorber with respect to the contraction of the abdomen, especially the difference between after eating and fasting, the difference between sitting and standing. It becomes possible to prevent discomfort and leakage at the time of wearing.

In the present invention, by superposing at least one of the elastic members 43 on the narrow region 31b, even when the absorber 31 absorbs excretory fluid and swells, the absorber portion is removed from the outer body of the diaper. Protruding can be prevented. Thereby, even after the excretion, the wearing appearance can be maintained in a good state. In addition, by superposing at least one of the elastic members 43 on the narrow region 31b, the absorber 31 can easily follow the movement of the exterior body. Thereby, the fitting property of the absorber 31 can be improved and the leakage of excretory fluid can be prevented more effectively.

When the absorber 31 has the narrow area | region 31b, it is preferable that the expansion-contraction member 43 has overlapped in the centerline vicinity of the longitudinal direction length of the narrow area | region 31b. Specifically, it is preferable to overlap with a range of ± 20% of the length in the longitudinal direction from the center line, and more preferable to overlap with a range of ± 10%.
As described above, by arranging the stretchable member 43 superimposed on the narrow region 31b in a predetermined region, even if the absorbent body 31 absorbs excretory fluid and swells, the outer body of the diaper is removed. It can prevent more effectively that an absorber part raises. In addition, by arranging the stretchable member 43 superimposed on the narrow region 31b in a predetermined region, it is easy to follow the movement of the exterior body in regions other than the narrow region of the absorber 31. The overall fit can be further improved.

When the absorber 31 has the narrow region 31b, there is an advantage that the elastic member 43 can press the absorber 31 with less force by superimposing at least one of the stretch members 43 on the narrow region 31b. is doing. For example, when the elastic member 43 is superimposed on the region having the maximum dorsal belly width of the absorbent body 31, a greater force is required to press the absorbent body 31. On the other hand, in the present invention, the force for pressing the absorber 31 can be reduced by superimposing at least one of the elastic members 43 on the narrow region 31b. That is, the above-described effects can be exhibited even if the tension of the elastic member 43 superimposed on the narrow region 31b and the strength of the member itself are reduced.

In the present invention, the tensile strength (N / cm) in the width direction of the longitudinal end region overlapping member of the front body 1 or the back body 2 is Fe, and the longitudinal direction end portion side of the longitudinal end region overlapping member is Fe. It is preferable that Fw> Fe, where Fw is the tensile strength (N / cm) in the width direction of the stretchable region constituting member disposed on the surface. By making the tensile strength of each region satisfy the above conditions, the thickness difference of the absorber can be relaxed and a natural fit can be obtained.
Here, the tensile strength (N / cm) in the width direction of the longitudinal end region overlapping member represented as Fe is superimposed on the longitudinal end region of the absorber 31 in the front body 1 or the back body 2. It is the tensile strength of the width direction of the structural member (expandable member and sheet | seat) which is a member (expandable member and sheet | seat), and is located in the skin non-contact surface side rather than the absorption part main body 30. FIG. Specifically, it is the tensile strength in the width direction of the constituent members (expandable members and sheets) superimposed on the region indicated by region E in FIG. When measuring the tensile strength, first, the side seal part of the disposable diaper is peeled off and deployed as shown in FIG. 2, and then the elastic member provided on the exterior body is extended, and the length at the maximum extension is measured. . Next, the E region and the W region are cut out. When cutting, it cut | disconnects by the centerline (vertical center part between adjacent elastic members) between adjacent elastic members, and measures the vertical direction area width (cm) of each area | region. This sample was stretched at a rate of 200 mm / min with a tensile tester, the load (N) at a length of 65% of the length at the maximum stretching was measured, and the unit width per unit width divided by the region width (cm). Calculate the intensity.
In addition, the tensile strength (N / cm) in the width direction of the stretchable region constituent member represented as Fw is all superimposed on the stretchable region disposed on the longitudinal end side than the longitudinal end region of the absorber. It is the tensile strength of the width direction of the structural member (expandable member and sheet). Specifically, it is the tensile strength in the width direction of the constituent members (expandable members and sheets) superimposed on the region indicated by the W region in FIG. The method for measuring the tensile strength in the width direction of the stretchable region constituting member is the same as described above.

DESCRIPTION OF SYMBOLS 1 Front body 2 Rear body 3 Crotch part 4 Waist opening part 5 Leg opening part 10 Front body exterior body 20 Rear body exterior body 30 Absorbing part main body 31 Absorber 31a End part area | region 31b of an absorber in the longitudinal direction Narrow area | region 32 Top sheet 33 Back sheet 34 Cover sheet 35 Three-dimensional gather 36 Core wrap sheet 37 Groove part 37a Concave part 41 Inner sheet 42 Outer sheet 43 Elastic member 45 Inner sheet 46 Tammy elastic member 100 Absorbent article

Claims

A front body that contacts the wearer's abdomen, a back body that contacts the back of the wearer, and a crotch located between the front body and the back body, and is divided in the longitudinal direction;
An absorber disposed from the front body to the back body;
A plurality of stretchable members extending in the width direction provided in the longitudinal direction end region of both the front body and the back body, or an absorbent article,
The absorber has a groove,
A portion of the groove is present in the longitudinal end region of the absorber,
A part of at least one of the elastic members overlaps at least one of the longitudinal end region of the absorber from the skin non-contact surface side of the absorber,
The elastic member superimposed on the longitudinal end region of the absorbent body is an absorbent article that traverses at least a part of a groove that exists in the longitudinal end region of the absorbent body.
The absorbent article according to claim 1, wherein the groove portion extends intermittently or continuously in the longitudinal direction of the absorbent body.
The absorbent article according to claim 1 or 2, wherein an area of the groove is 5 to 50% with respect to an area of the absorber.
The absorptivity according to any one of claims 1 to 3, wherein both or one of the longitudinal end regions of the absorber has a narrow region that is narrower than the maximum dorsal belly width of the absorber. Goods.
The absorbent article according to claim 4, wherein a minimum width of the narrow region is 50 to 90% with respect to a maximum dorsal belly width of the absorbent body.
The stretchable member superimposed on the longitudinal end region of the absorber is superimposed on a region of 5 to 10 mm from the longitudinal end edge of the absorber toward the inside in the longitudinal direction. The absorbent article of any one of Claims.
The absorptivity according to any one of claims 1 to 6, wherein an average thickness of both or one of the longitudinal end regions of the absorber is thinner than an average thickness of a central region of the absorber. Goods.
The tensile strength (N / cm) in the width direction of the longitudinal end region overlapping member of the front body or the back body is Fe, and is arranged on the longitudinal end side of the longitudinal end region overlapping member. The absorbent article according to any one of claims 1 to 7, wherein Fw> Fe, where Fw is the tensile strength (N / cm) in the width direction of the stretchable region constituting member.