WO2020189279A1

WO2020189279A1 - Absorbent article

Info

Publication number: WO2020189279A1
Application number: PCT/JP2020/009120
Authority: WO
Inventors: 秀晃槇; 和樹長田; 洋大椎野; 敬司藤井
Original assignee: ユニ・チャーム株式会社
Priority date: 2019-03-20
Filing date: 2020-03-04
Publication date: 2020-09-24
Also published as: JP6811278B2; BR112021018584B1; RU2765364C1; CN113556999A; CN113556999B; BR112021018584A2; CN117982294A; JP2020151257A

Abstract

Provided is an absorbent article (1) which comprises a pair of waist portions (20, 30) and an absorbent body (10), wherein: the waist portion (20) includes a pair of sheets (21, 22) and a plurality of elastic members (23); each of the elastic members (23) is continuously disposed from one end to the other end of the waist portion (20) in the width direction, and has an end fixed portion (40) on both ends in the width direction; the plurality of elastic members (23) include a first elastic member (231a) that has an unfixed portion (51) which is not fixed to the pair of sheets (21, 22) inward of the end fixed portions (40) in the width direction, and a second elastic member (231b) that has a fixed portion (52) in which a region overlapping the unfixed portion (51) in the width direction is fixed to the pair of sheets (21, 22); and the unfixed portion (51) has a length that is longer than the length of the absorbent body (10) in the width direction.

Description

Absorbent article

The present invention relates to an absorbent article.

As an elastic structure around the waist of the absorbent article, there is one provided with an elongated elastic elastic member provided along the elastic direction between the two sheet layers. For example, in Patent Document 1, both ends of the elastic elastic member are fixed to two sheet layers, and the elastic elastic member is a free portion that is not fixed to the two sheet layers between the fixed ends. Further disclosed is an elastic structure having a sheet joint in which two sheet layers are joined via a hot melt adhesive in the region between the fixed ends. It is said that the sheet joints that are continuous in the expansion and contraction direction form a wavy shape (fold) along which the two sheet layers follow each other, and the top of the fold bends gently, resulting in a flexible feel.

Japanese Patent No. 6254625

In the absorbent article of Patent Document 1, since the elastic elastic member is not fixed to the two sheet layers between the fixed ends at both ends of the elastic elastic member in the waist circumference, the elastic article is worn around the waist. The relative position of the elastic elastic member with respect to the part may shift (for example, the position shift in the vertical direction), the fit may deteriorate, or the sheet constituting the waist circumference may be "blurred". There is a risk. On the other hand, when the entire elastic elastic member is fixed around the waist, it is possible to suppress the displacement of the elastic elastic member. However, if the area of the portion where the two sheet layers are fixed by the elastic elastic member becomes large, the flexibility of the waist circumference may be impaired.

The present invention has been made in view of the above problems, and an object of the present invention is to improve the flexibility of the waist circumference of an absorbent article and to cause burr in the waist circumference. Is to suppress.

The main invention for achieving the above object is an absorption having a width direction, a longitudinal direction, and a thickness direction, a pair of waist circumferences, and an absorbent body having an absorbent core in a deployed state. In the sex article, at least one of the pair of waist circumferences has a pair of sheets and a plurality of elastic members arranged between the pair of sheets that expand and contract in the width direction, and each of the above-mentioned articles. The elastic member is continuously arranged from one end to the other end of the waist circumference portion in the width direction, and both ends in the width direction are fixed to the pair of sheets. The plurality of telescopic members having a fixed portion and having a non-fixed portion not fixed to the pair of seats inside the end fixed portion in the width direction and the stretchable member in the width direction. At least one region overlapping the non-fixed portion has at least one second telescopic member having a fixed portion fixed to the pair of seats, and the length of the non-fixed portion in the width direction. Is an absorbent article characterized in that it is longer than the length of the absorbent body.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it is possible to improve the flexibility of the waist circumference of the absorbent article and suppress the occurrence of blistering in the waist circumference.

It is a schematic perspective view of the pants type disposable diaper 1. It is a schematic plan view of the diaper 1 in the expanded state and the extended state. FIG. 2 is a schematic cross-sectional view taken along the line II of FIG. It is a schematic plan view of the ventral waist circumference portion 20 of the first embodiment. It is a schematic plan view of the ventral trunk circumference 20 in the modified example. It is a schematic plan view of the ventral waist circumference portion 20 of the second embodiment. It is a schematic plan view of the ventral waist circumference portion 20 of the third embodiment.

The description of this specification and the accompanying drawings will clarify at least the following matters.
In the unfolded state, the absorbent article has a width direction, a longitudinal direction, and a thickness direction, and has a pair of waist circumferences and an absorbent body having an absorbent core, and the pair of waist circumferences. At least one of the portions has a pair of sheets and a plurality of elastic members arranged between the pair of sheets that expand and contract in the width direction, and each of the elastic members is the one of the waist circumference portions. The plurality of telescopic members are continuously arranged from one end to the other end in the width direction, and have a pair of end fixing portions in which both ends in the width direction are fixed to the pair of sheets. Is a first telescopic member having a non-fixed portion that is not fixed to the pair of seats inside the end fixed portion in the width direction, and at least a region that overlaps the non-fixed portion in the width direction. An absorbent article comprising at least one second telescopic member having a fixing portion fixed to the pair of sheets.

According to such an absorbent article, since the first elastic member has a non-fixed portion, the area of the highly rigid portion of the waist circumference portion can be reduced, and the flexibility can be improved. Further, since the movement of the non-fixed portion of the non-first telescopic member in the vertical direction is restricted by the fixed portion, the elastic member is unlikely to be displaced, the waist circumference is bulged, and the fit is deteriorated. It can be suppressed. In addition, by making the width of the non-fixed portion longer than the width of the absorbent body, the wearer can use the absorbent article in the area overlapping the absorbent body in the waistline, especially in the area corresponding to the central part of the wearer's body. It is possible to make it difficult to feel the hardness of.

It is desirable that the first telescopic member of the absorbent article has the non-fixing portion as a whole between the pair of end fixing portions in the width direction.

According to such an absorbent article, the length of the non-fixed portion in the width direction is longer than that in the case where the non-fixed portion is provided only in a part of the area between the end fixed portions on both sides in the width direction. It becomes longer, and the area of the low-rigidity portion of the waist circumference can be increased. As a result, the flexibility of the waist circumference can be further improved.

In such an absorbent article, the first telescopic member has a central fixing portion in which the first telescopic member is fixed to the pair of sheets at the central portion in the width direction, and the central portion in the width direction. It is desirable to have the non-fixed portions on both outer sides of the fixed portion.

According to such an absorbent article, since the first telescopic member is fixed by the central fixing portion in the central portion in the width direction, it is easy to prevent the first telescopic member from moving in the vertical direction, and it is easy to prevent the first telescopic member from moving in the vertical direction. The amount of movement (amplitude) in Therefore, the displacement of the elastic member in the vertical direction is suppressed, and it is possible to more easily suppress the bending of the waist circumference and the deterioration of the fit.

It is desirable that the second telescopic member of the absorbent article has the fixing portion as a whole between the pair of end fixing portions in the width direction.

According to such an absorbent article, even if the first stretchable member tries to move in the vertical direction, the first stretchable member can move because the fixing portion of the second stretchable member is widely provided in the width direction. It becomes easy to be restricted, and it is suppressed that a large displacement occurs. Therefore, it is possible to make it easier to suppress the occurrence of swelling around the waist and the deterioration of the fit when worn.

In such an absorbent article, the number of the first expansion / contraction members provided in at least one of the pair of waist circumferences is the number of the second elastic members provided in the one of the pair of waist circumferences. It is desirable that there are more than the number of elastic members.

According to such an absorbent article, the number of non-fixed portions provided around the waistline is larger than the number of fixed portions. That is, the proportion of the region having high rigidity in the waist circumference portion becomes small, and the flexibility of the waist circumference portion can be further increased.

In such an absorbent article, the number of the second elastic members provided in at least one of the pair of waist circumferences is the number of the first elastic members provided in the one of the pair of waist circumferences. It is desirable that the number is equal to or greater than the number of elastic members.

According to such an absorbent article, by setting the number of fixed portions provided in the waist circumference portion to be equal to or greater than the number of non-fixed portions, the proportion of the portion in which the second elastic member is fixed is large in the waist circumference portion. Therefore, the position shift of the second telescopic member is less likely to occur. Then, as the number of fixed portions of the second telescopic member increases, the movement of the first telescopic member in the vertical direction is more likely to be restricted. That is, the displacement of the telescopic member can be suppressed as a whole. As a result, it is possible to further suppress the occurrence of swelling around the waist and deterioration of fit.

It is desirable that at least one first stretchable member is arranged between two second stretchable members arranged adjacent to each other in the longitudinal direction of such an absorbent article.

According to such an absorbent article, since the non-fixed portion of the first telescopic member is arranged so as to be sandwiched in the vertical direction by the fixed portion of the second telescopic member, the non-fixed portion is arranged in the vertical direction. The movement is easily restricted by the fixed portion, and the misalignment of the first telescopic member can be reduced. As a result, it is possible to further suppress the occurrence of swelling around the waist and deterioration of fit.

It is desirable that the first stretchable member and the second stretchable member are alternately arranged side by side in the longitudinal direction of the absorbent article.

According to such an absorbent article, the movement of the non-fixed portion of the first telescopic member in the vertical direction is restricted by the fixed portion of the second telescopic member, so that the misalignment of the first telescopic member can be reduced. Can be done. As a result, it is possible to further suppress the occurrence of swelling around the waist and deterioration of fit. Further, since the fixed portion and the non-fixed portion are alternately arranged in the vertical direction, when the waist circumference portion contracts in the width direction, wrinkles having a clean shape are likely to be formed on the surface of the waist circumference portion.

It is desirable that the absorbent article has a portion where the absorbent body and the fixing portion overlap when viewed in the thickness direction.

According to such an absorbent article, the elastic force of the second elastic member fixed to the skin-side sheet makes it easy to suppress the displacement of the absorbent core indirectly fixed to the skin-side sheet. Therefore, the fit of the absorbent core is increased, the excrement is less likely to leak, and the comfort of the absorbent article is improved.

In such an absorbent article, the fixing portion of the upper end of the absorbent body and the absorbent core in the longitudinal direction of the region overlapping the absorbent body when viewed in the thickness direction. It is desirable that it is provided in the area between the upper end.

According to such an absorbent article, the elastic force of the second elastic member is unlikely to act directly on the region overlapping the absorbent core, so that when the absorbent article is worn, the absorbent core is contracted or the wearer's skin. It is difficult for the force to push it to the side to act, and the absorption capacity of the absorbent core is easily maintained. On the other hand, the upper end region (inner flap) of the absorbent body 10 fits the wearer's body, and a gap is less likely to be formed between the absorbent body and the wearer's body. It becomes easier to prevent the leakage of excrement such as urine. This makes it easier to suppress the leakage of excrement while further improving the fit of the absorbent core.

A post-treatment tape is provided on the non-skin side of the waist circumference of the absorbent article to keep the absorbent article in a rolled state when the used absorbent article is discarded. The post-treatment tape has a tape fixing portion for fixing the post-treatment tape to the non-skin side of the waist circumference portion, and when viewed in the thickness direction, the tape fixing portion and the fixing portion. It is desirable to have a portion that overlaps with.

According to such an absorbent article, since the tape fixing portion of the post-treatment tape and the fixing portion of the second elastic member overlap, the post-treatment tape is non-skinned in the thickness direction after the use of the absorbent article. When pulled to the side, the pulling force is easily transmitted to both the skin-side sheet and the non-skin-side sheet constituting the waist circumference portion. Therefore, it is possible to prevent only the non-skin side sheet from being pulled and torn, or the pulling force from being difficult to be transmitted to the waist circumference. This makes it easier to post-treat the absorbent article after use.

It is desirable that the absorbent article has a sheet joint portion for joining the opposing surfaces of the pair of sheets, and the sheet joint portion and the elastic member do not have an overlapping portion.

According to such an absorbent article, when the elastic member around the waistline contracts, wrinkles are likely to be formed around the waistline, and the appearance and fit of the waistline can be improved. Further, since the seat joint portion does not overlap with the waist circumference elastic member, the area of the portion where the waist circumference expansion / contraction member is fixed to the seat does not increase, and the waist circumference expansion / contraction member maintains the flexibility of the waist circumference. It is possible to regulate the vertical movement of. Therefore, it is easy to maintain the vertical distance between the elastic members around the waist, and it is possible to easily suppress the occurrence of sagging or deterioration of the fit around the waist.

=== 1st Embodiment ===
Hereinafter, embodiments will be described with reference to a pants-type disposable diaper for infants as an absorbent article according to the present invention. However, the absorbent article according to the present invention is not limited to the above, and can be applied to pants-type disposable diapers for adults, tape-type disposable diapers, sanitary shorts, and the like.

<Structure of pants-type disposable diaper 1>
FIG. 1 is a schematic perspective view of the pants-type disposable diaper 1 (hereinafter referred to as “diaper 1”) of the first embodiment. FIG. 2 is a schematic plan view of the diaper 1 in the unfolded state and the extended state. FIG. 3 is a schematic cross-sectional view taken along the line II of FIG. The "deployed state" in the diaper 1 is a state in which the locking portions 40 described later are disjointed, the pair of waist circumference portions 20 and 30 (described later) are separated, and the diaper 1 is opened in the longitudinal direction. The "extended state" of the diaper 1 is a state in which the diaper 1 is extended without wrinkles, and the dimensions of each member (for example,

waist circumferences

20, 30, etc.) constituting the diaper 1 are the dimensions of the individual member. It is in a stretched state until it reaches the same length or a length close to it.

The diaper 1 has a width direction, a vertical direction, and a front-rear direction in the pants-shaped state shown in FIG. 1, and a waist circumference opening BH and a pair of leg circumference openings LH are formed. In the vertical direction, the waist circumference side is the upper side and the inseam side is the lower side. In the anterior-posterior direction, the ventral side of the wearer is the front side and the dorsal side of the wearer is the posterior side. Further, as shown in FIG. 3, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction, the side in the thickness direction that contacts the wearer is the skin side, and the side that does not contact the wearer is non. On the skin side. Further, in the unfolded state of FIG. 2, the diaper 1 has a longitudinal direction and a width direction intersecting each other. The longitudinal direction is a direction along the vertical direction, and the width direction is the same direction as the width direction in the pants-shaped state of FIG.

The diaper 1 has a pair of

waist circumferences

20 and 30 and an absorbent main body 10. Of the pair of

waist circumferences

20 and 30, the one that is applied to the ventral side of the wearer is referred to as the ventral waist circumference 20, and the one that is applied to the back side of the wearer is referred to as the dorsal waist circumference 30.

Further, the diaper 1 has a width direction and a longitudinal direction in the unfolded state shown in FIG. 2, and is located on one side (belly) of the absorbent body 10 in the longitudinal direction at the center of the ventral waist circumference portion 20 in the width direction. The end on the side) is arranged, and the end on the other side (dorsal side) of the absorbent body 10 in the longitudinal direction is arranged at the center of the dorsal waist circumference 30 in the width direction. In the unfolded diaper 1, the absorbent body 10 is folded in half at substantially the center in the longitudinal direction thereof, and the ventral waist circumference 20 and the dorsal waist circumference 30 are each locked on both sides in the width direction. By being locked in, the diaper 1 in the pants-type state shown in FIG. 1 is obtained. The longitudinal direction of the unfolded diaper 1 is along the vertical direction of the pants-shaped diaper 1. Further, as a locking method in the locking portion 40, welding, bonding with an adhesive, or the like can be exemplified.

As shown in FIG. 3, the absorbent body 10 is arranged on the absorber 11, the liquid-permeable top sheet 12 arranged on the skin side of the absorber 11, and on the non-skin side of the absorber 11. It has a liquid-impermeable back sheet 13 and an exterior sheet 14 arranged on the non-skin side of the back sheet 13.

As shown in FIG. 2, the absorber 11 has an absorbent core 11A that absorbs and retains excrement such as urine, and a liquid-permeable core wrap sheet 11B that covers the absorbent core 11A. As the absorbent core 11A, a liquid absorbent fiber such as pulp containing a highly absorbent polymer (SAP) formed into a predetermined shape can be exemplified. The absorbent core 11A may not be covered with the core wrap sheet 11B.

As shown in FIG. 3, the ventral waist circumference 20 and the dorsal waist circumference 30 are composed of flexible skin-

side sheets

21 and 31 such as non-woven fabrics and non-skin-side sheets 22 and 32 (a pair of sheets), respectively. It has a plurality of

elastic members

23, 33 around the waist, which are arranged between the

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32 and expand and contract in the width direction. The plurality of

elastic members

23 and 33 around the waist are arranged side by side at intervals in the vertical direction (longitudinal direction) between the

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32, and are arranged in the width direction. It is fixed in the extended state. Therefore, the ventral waist circumference 20 and the dorsal waist circumference 30 expand and contract in the width direction to fit the wearer's waist circumference. Examples of the waist circumference

elastic members

23 and 33 include a thread-like elastic member such as rubber thread and an elongated elastic sheet. Further, the configurations of the

waist circumference portions

20 and 30 are not limited to those shown in the drawings, and may be, for example, a configuration of three or more layers in which different sheets are laminated on a pair of sheets, or one sheet is bent. It may be configured as a pair of sheets.

Further, in the present embodiment, as a pants-type disposable diaper, the ventral waist circumference 20 and the dorsal waist circumference 30 are separated, and the ventral waist circumference 20, the dorsal waist circumference 30, and the absorbent body 10 3 The so-called three-piece type having a member has been exemplified, but the present invention is not limited to this. For example, the ventral waist circumference 20 and the dorsal waist circumference 30 are formed of a continuous member via the lower crotch, and the ventral waist circumference 20 and the dorsal waist circumference 30 are integrated. It may be a so-called two-piece type pants-type disposable diaper having two members, a member and an absorbent main body.

<About

waist circumferences

20 and 30>
FIG. 4 is a schematic plan view of the ventral waist circumference portion 20 of the first embodiment. Hereinafter, the configuration of the pair of

waist circumference portions

20 and 30 will be described by taking the ventral waist circumference portion 20 as an example. However, at least one of the pair of

waist circumferences

20 and 30 may have the following configuration. That is, both

waist circumferences

20 and 30 may have the following configuration, or the ventral waist circumference 20 may have the following configuration and the dorsal waist circumference 30 may have the following configuration. The side waist circumference portion 20 may have the following configuration, and the dorsal waist circumference portion 30 may differ from the following configuration. The same applies to other embodiments.

The plurality of waist circumference elastic members 23 included in the ventral waist circumference portion 20 (hereinafter referred to as “trunk circumference portion 20”) are continuously arranged from one end to the other end in the width direction of the waist circumference 20. It has a "continuous telescopic member 231 (expandable member of the present invention)" and a plurality of "discontinuous telescopic members 232" arranged discontinuously in the width direction. The discontinuous telescopic member 232 is arranged below the continuous telescopic member 231.

Each continuous telescopic member 231 has a "pair of end fixing portions 50" whose both ends in the width direction are fixed to the skin side sheet 21 and the non-skin side sheet 22. The fixing method in the end fixing portion 50 is not particularly limited, and for example, fixing with an adhesive applied to the continuous expansion / contraction member 231 or a skin side sheet 21 and a non-skin side sheet 22 (hereinafter, "a pair of sheets 21"). , 22 ") can be exemplified by well-known methods such as fixing with an adhesive applied to the inner surface and fixing with a pair of welded portions crossing the continuous expansion / contraction member 231.

Further, in FIG. 4, the pair of end fixing portions 50 are arranged inside the pair of locking portions 40 in the width direction separately from the pair of locking portions 40. However, it is not limited to this. The pair of locking portions 40 may be used as a pair of end fixing portions. That is, the diaper 1 does not have to have the end fixing portion 50 shown in FIG.

Further, the plurality of continuous expansion / contraction members 231 have at least one "first continuous expansion / contraction member 231a" and "second continuous expansion / contraction member 231b".

The first continuous telescopic member 231a (first telescopic member of the present invention) has a "non-fixing portion 51" that is not fixed to a pair of

sheets

21 and 22 inside the end fixing portion 50 in the width direction. On the other hand, in the second continuous expansion / contraction member 231b (the second expansion / contraction member of the present invention), at least the region overlapping the non-fixed portion 51 in the width direction is fixed to the pair of

sheets

21 and 22 as the "fixed portion 52". Have. The fixing portion 52 may be formed integrally with the

end fixing portions

50 and 50, or may be formed separately from the end fixing portions 50.

In the first embodiment, the non-fixing portion 51 is continuously arranged from the end fixing portion 50 on one side in the width direction to the end fixing portion 50 on the other side (see FIG. 4). Then, the fixing portions 52 are continuously arranged from the one-sided end fixing portion 50 in the width direction to the other-side end fixing portion 50 so as to correspond to the position where the non-fixing portion 51 is provided. (See FIG. 4).

However, in the width direction, the non-fixed portion 51 of the first continuous expansion / contraction member 231a may be arranged only in a part of the region between the

end fixing portions

50, 50. In this case, the fixing portion 52 of the second continuous expansion / contraction member 231b may be provided at least in the portion where the non-fixing portion 51 is provided in the width direction.

In the diaper 1, the portion where the waist circumference elastic member 23 is fixed to the pair of sheets 21 and 22 (fixed portion 52) is more cured than the non-fixed portion (non-fixed portion 51) due to hardening of the adhesive or the like. The rigidity of the waist circumference portion 20 is increased. Therefore, since the first continuous expansion / contraction member 231a has the non-fixed portion 51, for example, when the non-fixed portion 51 is not provided (the waist circumference expansion / contraction member 23 is fixed to the pair of

seats

21 and 22 over almost the entire area. The area of the highly rigid part can be reduced as compared with the case where the rigidity is high. Therefore, the flexibility of the waist circumference portion 20 can be improved, and the comfort of wearing the waist circumference portion 20 can be improved.

Then, in the present embodiment, in the width direction, the length L51 of the non-fixed portion 51 (the total length in the width direction of the non-fixed portion 51 provided for a certain first continuous expansion / contraction member 231a) is absorbent. The length (width) of the main body 10 is longer than W10. As described above, since the absorbent main body 10 has the absorbent core 11A formed of the liquid absorbent fiber, the rigidity is higher than that of the waist circumference portion 20 and the like. Therefore, in the region where the waist circumference 20 and the absorbent body 10 overlap in the width direction, the waist circumference 20 becomes harder than in the region where the absorbent main body 10 does not overlap, and when the diaper 1 is worn. There is a risk of causing discomfort or discomfort to the wearer. On the other hand, in the diaper 1, by providing the non-fixed portion 51 in a wider range than the portion of the waist circumference portion 20 that overlaps with the absorbent main body 10 in the width direction, the absorbent main body 10 is provided in the portion. It is possible to make it difficult for the wearer (user) to feel the hardness of the diaper. Especially in the area corresponding to the central part of the wearer's body, the flexibility can be easily felt. Therefore, it is possible to make it difficult for the wearer to feel uncomfortable or uncomfortable with the waist circumference portion 20.

However, in the non-fixed portion 51, since the first continuous stretchable member 231a is not fixed to the pair of

seats

21 and 22, the first continuous stretchable member 231a (non-fixed portion 51) moves up and down when the diaper 1 is worn. It may move in the direction. That is, there is a possibility that the first continuous expansion / contraction member 231a may be displaced with respect to the waist circumference portion 20 in the vertical direction. Then, when the diaper 1 is worn, if the first continuous telescopic member 231a is displaced in the vertical direction in the waist circumference portion 20, the

sheets

21 and 22 constituting the waist circumference portion 20 may be bent. There is a risk that the tightening around the waist of the wearer will be uneven and the fit of the waist 20 will deteriorate.

On the other hand, in the present embodiment, since the fixed portion 52 is provided in the region overlapping the region where the non-fixed portion 51 is provided in the width direction, the first continuous expansion / contraction member 231a (non-fixed portion) The vertical movement of 51) is restricted by the second continuous expansion / contraction member 231b (fixing portion 52). As a result, it is possible to prevent the waist circumference 20 from being sagging or the fit from being deteriorated. That is, in the diaper 1, while improving the flexibility of the waist circumference portion 20 by providing the non-fixed portion 51, it is effective that the waist circumference portion 20 is bulged by providing the fixed portion 52 at a predetermined position. Can be suppressed.

Further, in the present embodiment, as shown in FIG. 4, the non-fixing portion 51 is continuously arranged from the end fixing portion 50 on one side in the width direction to the end fixing portion 50 on the other side. That is, the non-fixed portion 51 is provided as a whole between the pair of end fixed

portions

50, 50. Therefore, the length L51 of the non-fixed portion 51 in the width direction is longer than that in the case where the non-fixed portion 51 is provided only in a part of the area between the end fixed

portions

50, 50 on both sides in the width direction. It becomes longer, and the area of the portion of the waist circumference 20 having low rigidity can be increased. Thereby, the flexibility of the waist circumference portion 20 can be further improved.

Further, the fixed portion 52 is continuously arranged from the end fixing portion 50 on one side in the width direction to the end fixing portion 50 on the other side corresponding to the non-fixing portion 51. That is, the fixing portion 52 is provided as a whole between the pair of

end fixing portions

50, 50. When the length of the non-fixed portion 51 in the width direction is increased as described above, the range in which the first continuous expansion / contraction member 231a is not fixed to the pair of

sheets

21 and 22 becomes wider. That is, the first continuous expansion / contraction member 231a (non-fixed portion 51) can move in the vertical direction over a wide range in the width direction, and the positional deviation of the first continuous expansion / contraction member 231a may become large. However, in the present embodiment, the second continuous expansion / contraction member 231b is fixed by the fixing portion 52 in a wide range in the width direction. Therefore, even if the non-fixed portion 51 of the first continuous telescopic member 231a tries to move in the vertical direction, the movement is restricted by the fixed portion 52 of the second continuous telescopic member 231b, and it is easy to prevent a large displacement from occurring. As a result, even when the range of the non-fixed portion 51 is widened to improve the flexibility of the waist circumference portion 20, the waist circumference portion 20 may be sagging or the fit when worn may be deteriorated. You can firmly suppress what you do.

The fixing portion 52 does not necessarily have to be provided in the entire area between the

end fixing portions

50, 50 on both sides in the width direction, but at least in the entire area of the region R1 overlapping with the absorbent core 11A in the width direction. It is desirable that they are continuously provided over the same direction (see FIG. 4). Since the second continuous expansion / contraction member 231b is fixed to the pair of

sheets

21 and 22 in the region R1, the expansion / contraction force of the second continuous expansion / contraction member 231b easily acts on the entire region R1, and at least in the region R1. The waist circumference 20 can easily fit the wearer's skin. Therefore, in the region R1, the position of the absorbent core 11A is less likely to shift in the width direction, and it becomes easier to prevent excrement from leaking from the absorbent core 11A.

Further, at least one of the one or more fixing portions 52 provided continuously over the entire area of the region R1 in the width direction is arranged so as to overlap with the absorbent body 10 in the longitudinal direction. desirable. In other words, when the diaper 1 is viewed in the thickness direction, it is desirable that the absorbent body 10 and the fixing portion 52 of the second continuous expansion / contraction member 231b have an overlapping portion. If the second continuous elastic member 231b is fixed to the skin side sheet 21 in the region R1, the skin side sheet 21 is easily fixed to the wearer's body (skin) by the elastic force of the second continuous elastic member 231b. .. Then, the vertical displacement of the absorbent core 11A indirectly fixed to the skin side sheet 21 can be easily suppressed. That is, the displacement of the absorbent core 11A in the vertical direction (longitudinal direction) and the width direction is suppressed, the fit of the absorbent core 11A to the wearer is increased, excrement is less likely to leak, and the diaper 1 is worn. The comfort is improved.

As shown in FIG. 4, in the present embodiment, in the longitudinal direction, between the upper end 10eu of the absorbent body 10 and the upper end 11Aeu of the absorbent core 11A (this region is also referred to as an “inner flap”). At least one fixing portion 52 is provided. In other words, when the diaper 1 is viewed in the thickness direction, at least one fixing portion 52 of the second continuous expansion / contraction member 231b is provided at a position that overlaps with the absorbent body 10 and does not overlap with the absorbent core 11A. Has been done. In this case, the stretching force of the second continuous stretching member 231b does not act on the region overlapping the absorbent core 11A. Therefore, when the diaper 1 is worn, it is difficult for a force to contract the absorbent core 11A or excessively press it against the wearer's skin side to act, and it is suppressed that the absorption performance of the absorbent core 11A is impaired, and excrement is excreted. Can be made difficult to leak. Further, since the fixing portion 52 makes it easier for the inner flap of the absorbent body 10 to fit the wearer's body, it becomes difficult for a gap to be formed between the absorbent body 10 and the wearer's body in the inner flap. .. Therefore, it becomes easy to prevent excrement such as urine from leaking to the outside of the diaper 1 from the upper end portion of the absorbent body 10. As a result, it is possible to improve the fit of the absorbent core 11A and to easily suppress the leakage of excrement.

Further, in the diaper 1, among the plurality of continuous elastic members 231 arranged around the waist portion 20, the number of the first continuous elastic members 231a (the number of rubber threads) is the number of the second continuous elastic members 231b (threads). It is more than the number of rubbers). For example, in FIG. 4, three first continuous expansion / contraction members 231a and two second continuous expansion / contraction members 231b are provided on the waist circumference portion 20. As the number of the first continuous expansion / contraction members 231a increases, the number of non-fixed portions 51 increases, and the area of the portion having high rigidity can be reduced. That is, by increasing the number of non-fixed portions 51 to be larger than the number of fixed portions 52, the proportion of the region having high rigidity in the waist circumference portion 20 becomes small, and the flexibility of the waist circumference portion 20 can be further increased. For example, when the wearer of the diaper 1 is an infant or an elderly person with weak skin, increasing the flexibility of the waist circumference 20 may damage the wearer's skin or cause discomfort. It is effective because it can be suppressed.

However, in the diaper 1, the number of the second continuous elastic members 231b (the number of rubber threads) among the plurality of continuous elastic members 231 arranged around the waist circumference 20 is the number of the first continuous elastic members 231a (threads). The number of rubbers may be equal to or greater than the number of rubbers). As the number of the second continuous expansion / contraction member 231b increases, the number of the fixing portions 52 increases, and the second continuous expansion / contraction member 231b can be easily fixed firmly to the pair of

sheets

21 and 22. That is, by setting the number of the fixed portions 52 to be equal to or greater than the number of the non-fixed portions 51, the proportion of the portion where the second continuous elastic member 231b is fixed in the waist circumference portion 20 becomes large, and the second continuous elastic member 231b Is less likely to be misaligned. Then, by fixing the position of the second continuous expansion / contraction member 231b, the movement of the first continuous expansion / contraction member 231a in the vertical direction is likely to be restricted as described above. That is, the misalignment of the continuous expansion / contraction member 231 can be suppressed as a whole. As a result, it is possible to further suppress the occurrence of swelling in the waist circumference portion 20 and deterioration of the fit.

Further, in the diaper 1, at least one first telescopic member 231a is arranged between two second continuous telescopic members 231b and 231b arranged adjacent to each other in the vertical direction (longitudinal direction). That is, in the longitudinal direction, the non-fixed portion 51 of the first telescopic member 231a has a portion arranged so as to be vertically sandwiched by the fixed

portions

52 and 52 of the second continuous telescopic member 231b. In such a portion, even if the first telescopic member 231a (non-fixed portion 51) is displaced in the vertical direction, it is moved in the vertical direction by the fixed

portions

52, 52 arranged so as to sandwich the upper and lower portions thereof. Is limited, so the effect of misalignment can be reduced. As a result, the non-fixed portion 51 of the first continuous telescopic member 231a is less likely to be largely displaced in the vertical direction, causing a bulge in the waist circumference portion 20, or a misalignment of the continuous telescopic member 231 to fit the waist circumference portion 20. It is possible to more efficiently suppress deterioration of sex.

Further, in the diaper 1, the first continuous expansion / contraction member 231a and the second continuous expansion / contraction member 231b are alternately arranged side by side in the vertical direction (longitudinal direction). In other words, in the vertical direction, there is a portion in which the first continuous telescopic member 231a is arranged between two adjacent second continuous telescopic members 231b and 231b, and such a portion repeats in the longitudinal direction. It is provided. With such a configuration, as in the above case, the non-fixed portion 51 of the first continuous expansion / contraction member 231a is less likely to be largely displaced in the vertical direction, and the waist circumference portion 20 is bulged or continuously expanded / contracted. It is possible to more efficiently suppress the deterioration of the fit of the waist circumference portion 20 due to the misalignment of the member 231. Further, since the fixed portion 52 and the non-fixed portion 51 are alternately arranged in the vertical direction, when the waist circumference portion 20 contracts in the width direction when the diaper 1 is worn, the surface of the waist circumference portion 20 is exposed. Wrinkles with a clean shape are likely to be formed. That is, the aesthetic appearance of the diaper 1 can be improved by regularly arranging the wrinkles having the same shape.

Further, as shown in FIG. 4, the waist circumference portion 20 has a discontinuous telescopic member 232 below the continuous telescopic member 231 arranged at the lowest position (inside in the longitudinal direction). The discontinuous telescopic member 232 is discontinuous in at least a part of the region R1 that overlaps the absorbent core 11A in the width direction. That is, a part of the waist circumference stretchable member 23 that overlaps with the absorbent body 10 in the longitudinal direction has a non-stretchable region (discontinuous portion) in the central portion in the width direction. Therefore, the contraction of the absorbent core 11A by the waist circumference elastic member 23 can be suppressed, and the flatness of the absorbent core 11A can be ensured.

The discontinuous telescopic member 232 also preferably has an end fixing portion 55 and a non-fixing portion 56. The end fixing portion 55 is a portion where both ends in the width direction of the continuous portion of the discontinuous telescopic member 232 are fixed to a pair of

sheets

21 and 22. The non-fixing portion 56 is a portion between the end fixing portions 55 in which the discontinuous telescopic member 232 is not fixed to the pair of

sheets

21 and 22. Specifically, as shown in FIG. 4, a pair of

end fixing portions

55, 55 are provided at one end in the width direction of the waist circumference 20 and one end in the width direction of the absorbent core 11A. It is arranged, and the non-fixed portion 56 is arranged between them. Similarly, a pair of

end fixing portions

55, 55 are arranged at the other end of the absorbent core 11A in the width direction and the other end of the waist circumference 20 in the width direction, and the non-fixing portion 56 is provided between them. Is placed.

Since the discontinuous telescopic member 232 also has the non-fixed portion 56 in this way, the flexibility of the waist circumference portion 20 is improved. However, the present invention is not limited to the above, and the discontinuous telescopic member 232 may not have the non-fixed portion 56. Further, a part of the discontinuous telescopic member 232 may be fixed in the region between the pair of

end fixing portions

55, 55. In this way, when the diaper 1 is worn, the waistline portion 20 can be easily fitted in the area between the pair of

end fixing portions

55 and 55, and it is easy to prevent the diaper from floating from the wearer's skin. .. Further, among the plurality of discontinuous telescopic members 232, 232 ... Arranged in the vertical direction, those having a fixing portion in the region between the pair of

end fixing portions

55, 55 and those having no fixing portion alternately alternate. It may be arranged. In this case, both flexibility and fit in the area can be achieved.

Further, as shown in FIGS. 2 and 3, a post-treatment tape 70 is provided on the dorsal waist circumference 30 of the diaper 1. The post-treatment tape 70 is a substantially rectangular tape-shaped member (tape member) that is long in the vertical direction, and is indicated by a tape fixing portion 71 (hatched portion in FIG. 2) on one side in the vertical direction (longitudinal direction). ), And has an adhesive portion 72 on the other side in the vertical direction (longitudinal direction). The tape fixing portion 71 is formed of an adhesive or the like, and the post-treatment tape 70 is non-peelably fixed to the non-skin side surface of the non-skin side sheet 32 of the dorsal waist circumference portion 30 by the tape fixing portion 71. An adhesive is applied to the adhesive portion 72, and before the diaper 1 is used, a part of the post-treatment tape 70 is folded with the adhesive portion 72 inside, so that the adhesive portion 72 is not exposed to the outside. In this way, the adhesive surface of the adhesive portion 72 is protected.

When disposing of the used diaper 1, the adhesive portion 72 is pulled by stretching the folded post-treatment tape 70 against the diaper 1 which is vertically rolled so that the absorbent body 10 is inside. It is exposed and the adhesive portion 72 side is wound around the diaper 1. As a result, the diaper 1 can be held in a rolled state, and the diaper 1 can be discarded without leaking excrement or the like adhering to the inside of the diaper 1 (absorbent main body 10) to the outside.

In the present embodiment, the post-treatment tape 70 is arranged so that the tape fixing portion 71 and the fixing portion 52 of the second continuous expansion / contraction member 231b (331b) overlap when viewed in the thickness direction. There is. If the tape fixing portion 71 of the post-processing tape 70 does not overlap with the fixing portion 52 when viewed in the thickness direction, the following problems may occur. That is, when the post-treatment tape 70 is pulled toward the non-skin side in the thickness direction after the diaper 1 is used, only the non-skin side sheet 22 (32) of the waist circumference 20 (back side waist circumference 30) is fixed with the tape. By being pulled toward the non-skin side via the portion 71, the non-skin side sheet 22 (32) may be lifted from the skin side sheet 21 (31). In this case, the non-skin side sheet 22 (32) may be torn, or the force for pulling the post-treatment tape 70 may be difficult to be transmitted to the waist circumference portion 20 (dorsal waist circumference portion 30).

On the other hand, in the present embodiment, since the tape fixing portion 71 and the fixing portion 52 overlap each other, when the post-treatment tape 70 is pulled toward the non-skin side in the thickness direction after the diaper 1 is used, Both the skin side sheet 21 (31) and the non-skin side sheet 22 (32) joined in the thickness direction via the fixing portion 52 are pulled. Therefore, it is possible to prevent the sheets 21 (31) and 22 (32) constituting the waist circumference portion 20 from being torn and the force for pulling the post-processing tape 70 from being difficult to be transmitted to the waist circumference portion 20. This makes it easier to perform post-treatment of the diaper 1 after use.

<Modification example>
FIG. 5 is a schematic plan view of the ventral waist circumference 20 in the modified example of the diaper 1. In the modified example, a central fixing portion 53 for fixing the first continuous expanding / contracting member 231a to a pair of

sheets

21 and 22 is provided at the central portion in the width direction of the first continuous expanding / contracting member 231a. That is, the first continuous telescopic member 231a has a central fixing portion 53 in the central portion in the width direction in the region between the

end fixing portions

50, 50 on both sides in the width direction, and both outer sides in the width direction of the central fixing portion 53. Has

non-fixed portions

51 and 51. Other configurations of the diaper 1 in the modified example are the same as those in the above-described embodiment.

As described with reference to FIG. 4, in the above-described embodiment, the non-fixing portion 51 continuous along the width direction is provided in the region between the

end fixing portions

50, 50, and the first continuous expansion / contraction member 231a is provided. Was able to move up and down in the area. In particular, in the central portion in the width direction, the amount of movement (amplitude) of the first continuous expansion / contraction member 231a in the vertical direction may be the largest, so that there is a possibility that a large displacement may occur.

On the other hand, in this modification, since the first continuous expansion / contraction member 231a is fixed to the pair of

sheets

21 and 22 by the central fixing portion 53 in the central portion in the width direction, the first continuous telescopic member 231a is fixed in the central portion in the width direction. The continuous telescopic member 231a is suppressed from moving in the vertical direction. That is, the amount of movement (amplitude) of the first continuous telescopic member 231a in the vertical direction becomes small. Therefore, the vertical displacement of the waist circumference elastic member 23 can be suppressed, and it is possible to more easily suppress the waist circumference portion 20 from sagging or the fit from being deteriorated.

Also, in the modified example, the length L51 of the non-fixed portion 51 in the width direction is larger than the width W10 of the absorbent body 10 (L51> W10). That is, the length (L51) obtained by subtracting the length L53 in the width direction of the central fixing portion 53 from the length in the width direction between the

end fixing portions

50 and 50 on both sides in the width direction is the width of the absorbent body 10. It is larger than W10. Therefore, it is possible to prevent the non-fixed portion 51 from becoming narrow and maintain the flexibility of the waist circumference portion 20.

=== Second embodiment ===
FIG. 6 is a schematic plan view of the ventral waist circumference portion 20 of the second embodiment. In the second embodiment, the waist circumference portion 20 is inside the end fixing portion 50 in the width direction, and the sheet joint portion 60 (indicated by a thick black line in FIG. 6) in which a pair of

sheets

21 and 22 are joined to each other. ). Examples of the method of joining the pair of

sheets

21 and 22 in the sheet joining portion 60 include welding and joining with an adhesive.

In the

non-fixed portions

51 and 56 of the waist circumference elastic member 23, since the pair of

sheets

21 and 22 are not joined to each other, there is a risk that they will be separated from each other. When the pair of

sheets

21 and 22 are separated from each other, the non-skin side sheet 22 is likely to float and be visually recognized in the appearance of the diaper 1, and irregular large vertical wrinkles are likely to be formed when the waist circumference elastic member 23 contracts. In particular, in the diaper 1, since the length (width) L51 of the non-fixed portion 51 in the width direction is longer than the width W10 of the absorbent main body 10, the pair of

sheets

21 and 22 are easily separated in the thickness direction, and are non-skinned. The floating of the side sheet 22 may become noticeable. On the other hand, in the second embodiment, by providing the sheet joint portion 60 on the waist circumference portion 20, it is possible to suppress the floating of the non-skin side sheet 22 and improve the appearance of the diaper 1.

The sheet joint 60 shown in FIG. 6 extends longer in the width direction than in the vertical direction (longitudinal direction) of the diaper 1. Further, a portion for fixing the waist circumference elastic member 23 to the pair of sheets 21 and 22 (for example, the fixing portion 52 of the second continuous elastic member 231b) and the sheet joint portion 60 inside the end fixing portion 50 in the width direction. Are discontinuous and are spaced vertically spaced apart. That is, the sheet joint portion 60 is arranged without intersecting the waist circumference elastic member 23. Specifically, the sheet joint portion 60 shown in FIG. 8 extends continuously from one end edge to the other end edge of the waist circumference portion 20 and is arranged between all of the waist circumference expansion / contraction members 23 arranged in the vertical direction. ..

By providing the sheet joint portion 60 extending in the width direction in the waist circumference portion 20 in this way, regular fine vertical wrinkles are likely to be formed when the waist circumference elastic member 23 contracts. Therefore, the appearance of the diaper 1 is improved, and the user can be given the impression that the waist circumference 20 has a good fit.

In addition, the sheet joint 60 regulates the vertical movement of the elastic member 23 around the waist. Therefore, it is easy to maintain the vertical distance between the waist circumference elastic member 23, and it is possible to easily prevent the waist circumference portion 20 from being sagging or the fit being deteriorated.

When the waist circumference portion 20 has the sheet joint portion 60, the flexibility of the waist circumference portion 20 may be reduced as compared with the case where the waist circumference portion 20 does not have the seat joint portion 60. However, the sheet joint portion 60 is less likely to adhere to the wearer's skin than the waist circumference elastic member 23. Therefore, it is difficult for the user to feel the hardness of the adhesive or the like of the sheet joint portion 60 as compared with the hardness of the adhesive or the like for fixing the waist circumference elastic member 23 to the pair of

sheets

21 and 22, and the waist circumference portion 20 is worn. It is possible to suppress a decrease in comfort.

Further, the sheet joint portion 60 of the second embodiment is not limited to the sheet shape shown in FIG. For example, the sheet joint 60 may be arranged intermittently in the width direction without extending continuously in the width direction. Further, the sheet joint portion 60 may be arranged only in a part between a plurality of the waist-surrounding elastic members 23 arranged in the vertical direction. Further, the sheet joint portion 60 may be arranged inside the locking portion 40 in the width direction, or may be arranged inside the end fixing portion 50 in the width direction. By arranging the sheet joint 60 in the area of the waistline elastic member 23 where the non-fixed part 51 is provided, the waistline portion 20 floats from the wearer's skin in the area when the diaper 1 is worn. It is possible to suppress the diaper.

=== Third Embodiment ===
FIG. 7 is a schematic plan view of the ventral waist circumference portion 20 of the third embodiment. The waist circumference portion 20 of the third embodiment has a sheet joining portion 60 in which a pair of

sheets

21 and 22 are joined to each other inside the end fixing portion 50 in the width direction as in the second embodiment. However, in the third embodiment, the shape and arrangement of the sheet joint portion 60 are different from those in the second embodiment. The configuration other than the shape and arrangement of the sheet joint portion 60 is substantially the same as that of the second embodiment.

In the third embodiment, as shown in FIG. 7, the broken line-shaped sheet joints 60 formed intermittently along the longitudinal direction (vertical direction) are arranged without intersecting the waist circumference elastic member 23. There is. That is, by joining the vertically long regions along the longitudinal direction between the two waist-circling

elastic members

23, 23 adjacent to each other in the longitudinal direction (vertical direction) by using a joining means such as welding or an adhesive. , A broken line-shaped sheet joint 60 is formed along the longitudinal direction. A plurality of broken-line sheet joints 60 along the longitudinal direction are arranged side by side on the waist circumference 20 at intervals in the width direction.

By providing the sheet joining portion 60 for joining the pair of

sheets

21 and 22 in this way, it is possible to suppress the floating of the non-skin side sheet 22 and improve the appearance of the diaper 1 as in the second embodiment. it can. Further, since the movement of the waist circumference elastic member 23 in the vertical direction is restricted by the sheet joint portion 60, it is possible to easily suppress the occurrence of burr or deterioration of the fit around the waist circumference portion 20. In the third embodiment, since the seat joint portion 60 and the waist circumference elastic member 23 do not have overlapping portions, the area of the portion where the waist circumference portion 20 is fixed to the pair of

seats

21 and 22 is Does not increase. Therefore, the flexibility of the waist circumference 20 is easily maintained.

Further, in the third embodiment, a plurality of broken line-shaped sheet joints 60 along the longitudinal direction (vertical direction) of the waist circumference portion 20 are arranged side by side in the width direction (horizontal direction), whereby the waist circumference portion 20 Clean wrinkles are likely to be formed. That is, when the waist circumference portion 20 contracts in the width direction based on the elasticity of the waist circumference elastic member 23, the pair of

sheets

21 and 22 are thick starting from the linear sheet joint portion 60 along the longitudinal direction. Concavo-convex deformation is likely to occur in the longitudinal direction. Therefore, wrinkles (vertical wrinkles) extending in the longitudinal direction along the sheet joint 60 are regularly arranged in the width direction on the surface of the waist circumference portion 20. By forming such wrinkles, it is possible to soften the touch of the waist circumference portion 20 and improve the appearance of the diaper 1.

The sheet joint 60 may be formed in a continuous linear shape along the longitudinal direction, and the sheet joint 60 and the expansion / contraction member 23 may overlap at a predetermined position. In this case, since the area of the joint portion between the elastic member 23 and the pair of

sheets

21 and 22 increases, the flexibility of the waist circumference portion 20 decreases as compared with the case where the sheet joint portion 60 and the elastic member 23 do not overlap. There is a risk of However, since the contraction force when the elastic member 23 contracts in the width direction tends to act on the pair of

sheets

21 and 22, the

sheets

21 and 22 also tend to contract in the width direction based on the contraction force, and the body Vertical wrinkles are more likely to be formed on the peripheral portion 20. As a result, the waist circumference 20 becomes softer to the touch, and the user is less likely to recognize the decrease in flexibility of the waist circumference 20. Therefore, even when the sheet joint portion 60 is formed in a linear shape continuous in the longitudinal direction, it is possible to suppress a decrease in wearing comfort of the waist circumference portion 20.

=== Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, it goes without saying that the present invention can be changed or improved without departing from the gist thereof, and the present invention includes an equivalent thereof.

1 Pants-type disposable diaper (absorbent article),
10 Absorbent body,
11 Absorbent, 11A Absorbent Core, 11B Core Wrap Sheet,
12 top sheet, 13 back sheet, 14 exterior sheet,
20 ventral waist circumference (trunk circumference), 30 dorsal waist circumference (trunk circumference),
21,31 Skin side sheet (sheet),
22, 32 Non-skin side sheet (sheet),
23,33 Elastic member around the waist,
231 Continuous telescopic member (expandable member), 232 Non-continuous telescopic member,
231a 1st continuous telescopic member (1st telescopic member),
231b, 331b 2nd continuous telescopic member (2nd telescopic member),
40 Locking part,
50, 55 end fixing part,
51, 56 non-fixed part,
52 Fixed part,
53 Central fixing part,
60 sheet joint,
70 Post-treatment tape, 71 Tape fixing part, 72 Adhesive part

Claims

In the unfolded state, it has a width direction, a longitudinal direction, and a thickness direction.
An absorbent article having a pair of girths and an absorbent body with an absorbent core.
At least one of the pair of waist circumferences has a pair of seats and a plurality of telescopic members arranged between the pair of seats that expand and contract in the width direction.
Each of the elastic members is continuously arranged from one end to the other end of the waist circumference portion in the width direction, and both ends in the width direction are fixed to the pair of sheets. Has an end fixing part,
The plurality of elastic members
A first telescopic member having a non-fixed portion that is not fixed to the pair of seats inside the end fixed portion in the width direction.
A second telescopic member having a fixed portion fixed to the pair of seats, and a region overlapping the non-fixed portion in the width direction at least.
Have at least one
An absorbent article characterized in that, in the width direction, the length of the non-fixed portion is longer than the length of the absorbent body.
The absorbent article according to claim 1.
An absorbent article characterized in that the first telescopic member has the non-fixing portion as a whole between the pair of end fixing portions in the width direction.
The absorbent article according to claim 1.
The first telescopic member is
At the central portion in the width direction, the first telescopic member has a central fixing portion fixed to the pair of seats.
The non-fixed portion is provided on both outer sides of the central fixed portion in the width direction.
An absorbent article characterized by that.
The absorbent article according to any one of claims 1 to 3.
The second telescopic member is an absorbent article characterized in that, in the width direction, the second telescopic member has the fixing portion as a whole between the pair of end fixing portions.
The absorbent article according to any one of claims 1 to 4.
The number of the first telescopic members provided on at least one of the pair of waist circumferences is larger than the number of the second telescopic members provided on the one of the pair of waist circumferences. An absorbent article characterized by that.
The absorbent article according to any one of claims 1 to 4.
The number of the second telescopic members provided on at least one of the pair of waist circumferences is equal to or greater than the number of the first telescopic members provided on the one of the pair of waist circumferences. An absorbent article characterized by that.
The absorbent article according to any one of claims 1 to 6.
An absorbent article characterized in that at least one said first stretchable member is arranged between two said second stretchable members arranged adjacent to each other in the longitudinal direction.
The absorbent article according to claim 7.
An absorbent article characterized in that the first telescopic member and the second telescopic member are alternately arranged side by side in the longitudinal direction.
The absorbent article according to any one of claims 1 to 8.
An absorbent article characterized in that, when viewed in the thickness direction, the absorbent body and the fixed portion overlap each other.
The absorbent article according to claim 9.
The fixing portion is provided in a region between the upper end of the absorbent body and the upper end of the absorbent core in the longitudinal direction in the region overlapping the absorbent body when viewed in the thickness direction. An absorbent article characterized by being.
The absorbent article according to any one of claims 1 to 10.
On the non-skin side of the waist circumference, a post-treatment tape for holding the absorbent article in a rolled state when the used absorbent article is discarded is provided.
The post-treatment tape has a tape fixing portion for fixing the post-treatment tape to the non-skin side of the waist circumference portion.
An absorbent article, which has a portion where the tape fixing and the fixing portion overlap when viewed in the thickness direction.
The absorbent article according to any one of claims 1 to 11.
It has a sheet joint portion that joins the opposing surfaces of the pair of sheets.
An absorbent article characterized in that the sheet joint portion and the elastic member do not have an overlapping portion.