TWI619479B - Absorbent article - Google Patents

Abstract

The absorbent article (10) of the present invention includes a liquid-permeable surface-side sheet (14), a liquid-impermeable back-side sheet (12), the surface-side sheet (14) and the above-mentioned The back sheet (12) is bonded to the absorbent body (13) of the back sheet (12) via the first bonding portion (21a), and the back sheet is bonded to the back sheet via the second bonding portion (21b). A cover sheet (11) joined to the outer surface of the material (12), and the absorbent body (13) is provided with a recess forming area (N1) in which a plurality of recesses (20) are formed, and an area formed by the recess (N1) is arranged at least 50% of the area enclosed by the cover sheet (11) so that the first joining portion (21a) and the second joining portion (21b) do not overlap each other.

Description

Absorbent article

The present invention relates to a liquid-permeable top sheet, a liquid-impermeable bottom sheet, and an absorbent article in which an absorbent body is disposed.

So far, absorbent articles such as disposable diapers (hereinafter, also simply referred to as "diapers") that guide discharged body fluids (hereinafter, also simply referred to as "liquids") to an absorbent body and absorb them are widely known. The absorbent system is formed by wrapping an absorbent body mainly composed of pulp and super absorbent polymer (Super Absorbent Polymer (hereinafter also referred to as "SAP")) by a covering member such as tissue paper or non-woven fabric. The absorber is thicker than the top sheet and the bottom sheet, and it may be difficult to bend the absorbent body so as to conform to the wearer's skin.

Therefore, for example, Patent Document 1 discloses that a plurality of grooves are formed in an absorbent body, and the grooves are easily bent to improve the conformability to the wearer's skin.

[Prior technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2013-255560

However, in the absorbent article described in Patent Document 1, when an absorbent body absorbs a liquid, an absorbent portion located between a plurality of grooves formed in the absorbent body swells separately to make the plural The outer side of the absorbent article corresponding to each of the absorbing portions is deformed separately, and the possibility of urination has been perceived by others based on seeing the situation. This can sometimes make the wearer or his caregiver ashamed. Therefore, there is still room for improvement in order to improve the diaper.

An object of the present invention is to provide an absorbent article which can improve the conformability on the one hand, and at the same time can prevent urination from being perceived by others as much as possible.

The absorbent article of the present invention includes a liquid-permeable front-side sheet, a liquid-impermeable back-side sheet, and is disposed between the front-side sheet and the back-side sheet and is connected to the back through the first joint portion. An absorber bonded to a side sheet and a cover sheet bonded to an outer surface of a back side sheet via a second bonding portion; the absorber is provided with a recessed portion forming region in which a plurality of recessed portions are formed; The recessed portion forming area and an area of 50% or more sandwiched by the cover sheet are arranged so that at least the first joining portion and the second joining portion do not overlap.

According to the present invention, the conformability can be improved on the one hand, and urination can be prevented from being perceived by others as much as possible.

10‧‧‧diapers

10A‧‧‧Hook and loop

10B‧‧‧ Front patch sheet

10C‧‧‧Her area

10D‧‧‧Elastic sheet

10F‧‧‧Former area

10L‧‧‧leg opening

10R‧‧‧Back area

10W‧‧‧ Waist opening

11‧‧‧ Cover sheet

11N, 15N‧‧‧Notch

12‧‧‧ bottom sheet (back side sheet)

13‧‧‧ Absorber

14‧‧‧ top sheet (surface side sheet)

15‧‧‧ three-dimensional folds

16, 19‧‧‧ rubber thread

17‧‧‧ Absorptive body

18‧‧‧ Covered member

20‧‧‧ recess

21a‧‧‧The first joint

21b‧‧‧ 2nd joint

22a‧‧‧The first non-joint area

2b‧‧‧ 2nd non-joint area

N1‧‧‧Concave area

N2‧‧‧Concave non-formed area

P‧‧‧imaginary line

FIG. 1 is a perspective view of an example of a diaper according to the first embodiment of the present invention, as viewed from the front side.

FIG. 2 is an exploded perspective view of the diaper shown in FIG. 1. FIG.

3 is a plan view of the diaper in a stretched state when viewed from the top sheet side according to the first embodiment of the present invention.

FIG. 4 is a plan view of the absorbent body as viewed from the top sheet side according to the first embodiment of the present invention, and is a view for explaining an example of a recessed portion forming region in which a plurality of recessed portions are formed.

Fig. 5 is a sectional view taken along the V-V direction in Fig. 3.

6 is a cross-sectional view of a diaper according to a second embodiment of the present invention, and is a cross-sectional view taken along the V-V direction of FIG. 3.

Fig. 7 is a cross-sectional view of a diaper according to a third embodiment of the present invention, and is a cross-sectional view taken along the V-V direction of Fig. 3.

An embodiment of the absorbent article of the present invention will be described in detail with reference to FIGS. 1 to 7. However, the present invention is not limited to the aspect of this embodiment.

The absorbent article according to this embodiment is configured such that at least a region joining a back sheet and an absorbent body and a joining bottom layer are formed by a predetermined region surrounded by a region including a plurality of recesses formed on a surface of an absorbent body and a cover sheet. The areas of the sheet and the cover sheet are arranged without overlapping. According to this configuration, it is easy to bend at the concave portion to improve the conformability, and even if the absorber absorbs the liquid, it is not easy for others to notice that the absorbent part swells to the outside, and as a result, urination can be avoided as much as possible.

First, a first embodiment in which the present invention is applied to a deployment type disposable diaper will be described as follows.

<First Embodiment> <Composition>

FIG. 1 shows a perspective view of an example of a diaper according to a first embodiment of the present invention as viewed from the front side. The diaper 10 of this embodiment is a deployment type disposable diaper, which includes a front body region 10F, a back body region 10R, and a lower region 10C connecting the front body region 10F and the rear body region 10R. . In addition, a waist opening 10W is formed at the portion of the wearer's waist surrounded by the front body region 10F and the back body region 10R when worn. Similarly, a pair of left and right leg openings 10L are formed to surround the lower thigh portion of the wearer's feet with the lower end portions of the front body area 10F and the rear body area 10R and the lower crotch area 10C.

When worn, the front body area 10F is located on the abdomen side of the wearer, and the rear body area 10R is located on the back side of the wearer. Furthermore, when worn, the crotch region 10C covers the wearer's crotch and becomes the form in which the wearer's feet pass through the left and right leg openings 10L, respectively. Therefore, the leg opening 10L is located at any position from the wearer's groin to the vicinity of the thigh.

The imaginary line P is extended to the central part of the diaper from the abdomen side toward the back side through the submental portion. Specifically, for example, if the waist side of a diaper is defined as the upper side and the lower side of the crotch is defined as the lower side, the imaginary line P extends along the surface of the diaper in the up-down direction, and the back side also extends in the up-down direction through the lower crotch. By.

A pair of left and right hook-and-loop fasteners 10A are adhered to the edges of the left and right ends of the rear region 10R of the cover sheet 11 on the outside of the diaper 10, and these hook-and-loop fasteners 10A overlap the left and right ends of the front region 10F when worn The edge part connects this person, and the leg opening part 10L can be formed. The hook and loop tape 10A is releasably bonded to the front sheet 10B that is adhered to the cover sheet 11 adhered to the front body region 10F.

FIG. 2 is a schematic exploded perspective view of the diaper 10 shown in FIG. 1, and FIG. 3 is a stretched state when viewed from the top sheet 14 side of the first embodiment of the present invention. Top view of the diaper 10. The absorbent body 13 shown in FIG. 2 and the diaper 10 shown in FIG. 3 are shown in a partially broken state for convenience of explanation, respectively.

As shown in FIG. 2, the diaper 10 of this embodiment has a laminated structure, and the laminated structure is a cover sheet 11 made of a thin non-woven fabric in order from the outside in order to obtain a good feel, Liquid- and moisture-permeable back sheet (back-side sheet) 12, an elongated absorbent body 13, a liquid-permeable top sheet (front-side sheet) 14, and a hydrophobic sheet member One pair of three-dimensional wrinkles (side sheet) 15 is formed by overlapping.

On the left and right sides of the lower region 10C of the cover sheet 11, a pair of notch portions 11N are formed as one of the leg opening portions 10L, respectively. Between the cover sheet 11 and the pair of three-dimensional creases 15, a pair of rubber threads 16 which are useful for forming leg creases are adhered in an extended state, respectively.

Examples of the material constituting the back sheet 12 include a film made of a resin such as polyethylene having a plurality of fine pores. The bottom sheet 12 is bonded to the cover sheet 11, the absorber 13 is disposed between the bottom sheet 12 and the top sheet 14, and the top sheet 14 is bonded to the bottom sheet 12 via the absorber 13. In this embodiment, details will be described later with reference to FIG. 5, but the bottom sheet 12 and the cover sheet 11 are bonded on the entire surface, and the absorbent body 13 and the bottom sheet 12 are not bonded in a predetermined area. In the bottom sheet 12, an area corresponding to the upper end of the back body region 10R is joined to an elastic sheet 10D extending along the width direction of the bottom sheet 12 to give the wearer a moderate wearing feeling around the waist. .

The absorbent body 13 of this embodiment, which is located under the top sheet 14, is formed by wrapping a pulp member and an absorbent body 17 of SAP with a covering member (core warp) 18 such as tissue paper or non-woven fabric. By covering the absorbent member with the covering member 18 The connecting line formed by the main body 17 is, for example, as shown in FIG. 2, formed on the upper surface of the absorbent body 13 and extending along the longitudinal direction. The absorbent body 13 of this embodiment is formed in an elongated shape so as to span the front body, the chin, and the back body. Here, if the front-to-back part is set to the front-back (up-down) direction and the direction orthogonal to it is set to the left-right direction, the absorber 13 of this embodiment has a different length from front-back (up-down) and left-right. Those with a rectangular shape (in Figs. 2 and 3, the length of the front-back (up-down) is longer than the length of the left-right). In addition, the shape of the absorber 13 in this embodiment is not limited to this, and includes, for example, those having a substantially square shape with the same length in front and back (up and down) and those with rounded corners. Various shapes, such as oval shape extending back and forth (up and down) and round shape. In addition, a pair of arc-shaped notches may be formed on the lower part of the absorbent body 13 so as to correspond to the pair of leg openings 10L. In this embodiment, as shown in FIG. 3, a plurality of concave portions 20 are formed on the surface of the absorber 13. The recessed portion 20 is provided by, for example, pressing a laminated body (hereinafter, also referred to as an “absorptive portion”) of the absorbent body 13 and the top sheet 14. Moreover, in this embodiment, a predetermined region sandwiched by a region (see FIG. 4 below) in which the absorbent body 13 is formed with a plurality of recessed portions 20 and a cover sheet 11 is arranged so as not to overlap at least. The joining portion of the absorbent body 13 and the back sheet 12 and the joining portion (see FIGS. 5 to 7 described below) joining the back sheet 12 and the cover sheet 11 are arranged without overlapping. The joint is formed by hot melt, adhesion using an adhesive, or thermal welding.

A pair of three-dimensional creases 15 are provided along the longitudinal direction of the absorbent body 13. Of the two side edges extending in the longitudinal direction of the absorbent body 13, one edge portion has a substantially linear shape, and the other edge portion is A notch portion 15N is formed near the lower part of the hip. The inner portion of the pair of three-dimensional wrinkles 15 is in a non-joined state with respect to the top sheet 14, and the three-dimensional wrinkles 15 include a free end at a side edge portion of the substantially linear shape. In the three-dimensional fold 15 The free end, as shown in Fig. 3, acts as a rubber member 19 of the elastic member that acts as a tensile force. A pair of three-dimensional creases 15 are arranged in an extended state along the length direction of the absorbent body 13 and can stand along the edges of both sides of the absorbent body 13 when the rubber thread 19 is worn.

<Area of Absorbent Body with Plural Recesses>

FIG. 4 is a plan view of the absorbent body 13 as viewed from the top sheet 14 side of the first embodiment of the present invention, and is a view for explaining an area of the absorbent body 13 having a plurality of recessed portions 20 (hereinafter, also referred to as “recessed portion formation”). Area ").

As described above, a plurality of concave portions 20 are formed on the surface of the absorber 13. In the present embodiment, the plurality of recessed portions 20 are formed on the surface of the absorbent body 13 in a diagonal grid pattern. According to this configuration, the concave portion is easily bent, and the conformability can be improved.

The recessed portion forming region may be, for example, a rectangular region extending in the longitudinal direction of the absorbent body 13 so as to contact both end portions of the plurality of recessed portions 20 (the left and right end portions of the recessed portions 20 in FIG. 4). As shown in FIG. 4, the rectangular region, as the region where the absorbing portion of the recessed portion 20 is formed, can be expressed as a recessed portion forming region N1. A region where the recessed portion 20 is not formed is referred to as a recessed portion non-formation region N2.

In this embodiment, the recessed portion 20 is not formed to the end in the width direction (left-right direction in FIG. 4) of the absorbent portion of the diaper 10, but is formed in the central portion along the length direction (upper-lower in FIG. 4). Direction). Although the recessed portion non-formation region N2 is provided in this embodiment, the present invention is not limited to this aspect, and the recessed portion 20 may be provided at the end of the absorber 13 as a matter of course. Therefore, the present invention may have a configuration in which the recessed non-formation region N2 is not provided. In addition, the present invention allows a state where the recessed portion 20 is not formed to an end portion in the longitudinal direction (upward and downward direction in FIG. 4) of the absorbent body 13 and a state where the recessed portion 20 is formed to the end portion. When formed to the end, it can make air permeability and prevent stuffiness Improved wetness.

<Non-joined area>

Fig. 5 is a sectional view taken along the V-V direction in Fig. 3. In addition, in order to simplify the description, the description of the connection lines of the covering member 18 is omitted in FIG. 5 (the same applies to FIGS. 6 and 7 to be described later). In FIG. 5, the joint between the absorbent body 13 and the back sheet 12 is shown as a first joint 21 a, and the joint between the back sheet 12 and the cover sheet 11 is shown as a second joint 21b.

In the diaper 10 of this embodiment, as shown in FIG. 5, in the area surrounded by the recessed portion forming area N1 and the cover sheet 11, the absorbent body 13 and the back sheet 12 are not joined. The outer surface, that is, the surface opposite to the absorber 13 side of the base sheet 12 and the cover sheet 11 are bonded via the second bonding portion 21b. That is, the first joint portion 21 a is not arranged in a region sandwiched by the recessed portion forming region N1 and the base sheet 12. Here, a region in which the first joint portion 21a is not arranged among regions surrounded by the recessed portion forming region N1 and the back sheet 12 is referred to as a first non-joint region 22a. In this embodiment, as shown in FIG. 5, the absorbent body 13 and the back sheet 12 are bonded to each other through the first bonding portion 21 a in a region sandwiched by the recessed portion non-formation region N2 and the cover sheet 11. The bottom sheet 12 and the cover sheet 11 are joined via a second joining portion 21b. Therefore, although the second joint portion 21b is arranged so as to overlap the first joint portion 21a in a region surrounded by the recessed portion non-formation area N2 and the cover sheet 11, the second joint portion 21b is formed in the recessed area N1 and the cover sheet. The area enclosed by 11 is arranged so as not to overlap the first joint portion 21a.

Up to now, there are diaper absorbent articles having a plurality of grooves formed in an absorbent body. After the absorbent body absorbs a liquid, there are a plurality of articles formed in the absorbent body. The absorption portions between the grooves are inflated separately, for example, when the groove portions gradually disappear from the outside of the absorbent article, and the possibility of urination has been perceived by others.

In the present invention, since the recessed portion forming area N1 and the predetermined area surrounded by the cover sheet 11 are arranged so that at least the first joining portion 21a and the second joining portion 21b do not overlap, the absorption is made before and after urination. The outer side of sex items is not easily deformed. That is, after the absorbent body 13 absorbs the liquid, even if the absorbent portions located between the plurality of recesses formed in the absorbent body expand separately, the deformation caused by the expansion will be blocked by the unjoined area. As a result, the back sheet 12 is not easily deformed, and as a result, deformation of the diaper 10 toward the outside can be suppressed. Therefore, urination cannot be easily detected by others.

Further, with this configuration, since a gap is formed between the absorbent body 13 and the back sheet 12 to form a moisture passage, the moisture generated from the liquid when absorbed by the absorbent body passes through the moisture permeability. The flexible back sheet 12 and the cover sheet 11 are discharged to the outside of the diaper 10. Therefore, air permeability can be improved.

In addition, with this configuration, since a gap is generated between the absorbent body 13 and the back sheet 12, the flexibility of the entire diaper 10 is improved. In addition, in this embodiment, although the cover sheet 11 and the back sheet 12 are joined over the entire surface via the second joining portion 21b, it is not limited to this, and in the present invention, the second The joining portion 21b is intermittently joined. This can further improve the softness of the diaper. Further, in the present invention, in order to further realize softness, a state where the joint portion is hardly used in an area sandwiched by the recessed portion forming area N1 and the cover sheet 11 is allowed. However, in consideration of the strength of the diaper 10 as a whole, a joint portion (the first joint portion 21a and / or the second joint portion 21b) may be appropriately provided.

In this embodiment, the first joint portion 21a is not disposed at all in the area surrounded by the recessed portion forming area N1 and the cover sheet 11. However, the inventor of this case found that As long as the condition that at least the first joining portion 21a and the second joining portion 21b are arranged without overlapping in the area sandwiched by the recess formation area N1 and the cover sheet 11 is satisfied, even if the first joining is not arranged The part 21a can also effectively exhibit the effect of the present invention. With this configuration, in addition to the difficulty in grasping the swelling of the absorbent body 13 in the absorbent body 13 from the appearance, it is difficult to perceive that urination has been performed, and the softness of the outside of the diaper 10 can be improved. In a case where the first joint portion 21a is arranged so as to overlap the second joint portion 21b in a region surrounded by the recessed portion forming area N1 and the back sheet 12, the first joint portion 21a is preferably arranged to avoid as much as possible. The periphery of the recessed portion 20 is uniformly dispersed.

<Second Embodiment>

Fig. 6 is a sectional view of a diaper 10 according to a second embodiment of the present invention, and is a sectional view taken along the V-V direction in Fig. 3. Those elements having the same function among the elements constituting the diaper 10 of this embodiment are denoted by the same reference numerals as those of the first embodiment, and descriptions thereof are omitted.

This embodiment is different from the first embodiment in that the absorbent body 13 and the bottom sheet 12 are bonded to each other via the first bonding portion 21a in the area surrounded by the recessed portion forming area N1 and the cover sheet 11 to cover the sheet. 11 and the bottom sheet 12 are not joined via the second joining portion 21b. That is, the second joint portion 21 b is not arranged in the area surrounded by the recessed portion forming area N1 and the cover sheet 11. Here, a region where the second joint portion 21 b is not arranged among regions surrounded by the base sheet 12 and the cover sheet 11 is referred to as a second non-joint region 22 b.

This embodiment is the same as the first embodiment. As shown in FIG. 6, in the area sandwiched between the non-forming area N2 and the cover sheet 11, the absorbent body 13 and the back sheet 12 pass through the first joint 21 a. As a result of joining, the base sheet 12 and the cover sheet 11 are joined via the second joining portion 21b. Therefore, the first joint portion 21a is The area sandwiched by the recessed non-formation area N2 and the cover sheet 11 is arranged so as to overlap the second joint portion 21b, but the area sandwiched by the recessed area formation area N1 and the cover sheet 11 is It is arrange | positioned so that it may not overlap with the 2nd junction part 21b.

According to this embodiment, similar to the first embodiment, it is possible to improve the fit and breathability while preventing urination from being detected by others as much as possible. In addition, since a gap is generated between the cover sheet 11 and the back sheet 12, the overall flexibility of the diaper 10 can be improved. Furthermore, in this embodiment, although the absorbent body 13 and the back sheet 12 are bonded over the entire surface via the first bonding portion 21a, it is not limited to this. In the present invention, the first bonding portion may also be connected via the first bonding portion. 21a is intermittently engaged. This can further increase the softness of the diaper.

In the present embodiment, the second joint portion 21 b is not disposed at all in the area surrounded by the recessed portion forming area N1 and the cover sheet 11. However, the present inventor has found that as long as the condition that at least the first joining portion 21a and the second joining portion 21b are arranged without overlapping in an area sandwiched by the recessed portion forming area N1 and the cover sheet 11 is satisfied, Even if the second joint portion 21b is not provided, the effect of the present invention can be effectively exhibited. With this configuration, in addition to the difficulty in grasping the swelling of the absorbent body 13 in the absorbent body 13 from the appearance, it is difficult to perceive that urination has been performed, and the softness of the outside of the diaper 10 can be improved. When the second joint portion 21b is arranged so as to overlap with the first joint portion 21a in the area surrounded by the recessed portion forming area N1 and the cover sheet 11, the second joint portion 21b is preferably arranged to avoid as much as possible. The periphery of the recessed portion 20 is uniformly dispersed.

<Third Embodiment>

The third embodiment of the present invention is different from the first embodiment in that a region is formed by a recess The first joint portion 21a and the second joint portion 21b are alternately arranged at a predetermined interval without overlapping the area N1 and the area surrounded by the cover sheet 11. That is, the first non-joined region 22 a in which the first joint portion 21 a is not arranged and the second non-joined region 22 b in which the second joint portion 21 b is not arranged are alternately provided at a predetermined interval.

FIG. 7 is a cross-sectional view of a diaper 10 according to a third embodiment of the present invention, and is a cross-sectional view taken along the V-V direction of FIG. 3. Those elements having the same function among the elements constituting the diaper 10 of this embodiment are denoted by the same reference numerals as those of the first embodiment, and descriptions thereof are omitted.

This embodiment is the same as the first embodiment. As shown in FIG. 7, in the area sandwiched by the non-forming area N2 and the cover sheet 11, the absorbent body 13 and the back sheet 12 pass through the first joint 21 a. As a result of joining, the base sheet 12 and the cover sheet 11 are joined via the second joining portion 21b. Therefore, although the first bonding portion 21a and the second bonding portion 21b are arranged so as to be overlapped by the recessed portion non-formation area N2 and the cover sheet 11, the area formed by the recessed portion formation area N1 and the cover sheet 11 is overlapped. The enveloped areas are arranged in a non-overlapping manner. In the present embodiment, the first non-joined region 22 a and the second non-joined region 22 b are arranged to slightly overlap each other in a region sandwiched by the recessed portion forming region N1 and the cover sheet 11.

According to this embodiment, similar to the first embodiment, it is possible to improve the fit and breathability while preventing urination from being detected by others as much as possible. In addition, since gaps are generated between the absorbent body 13, the back sheet 12, and the cover sheet 11, the flexibility of the entire diaper 10 can be improved.

In the present embodiment, in the area surrounded by the recessed portion forming area N1 and the cover sheet 11, the first joining portions 21a and the second joining portions 21b are alternately arranged at a certain interval, and the first non-joining area 22a and the second The non-bonding regions 22b are alternately arranged at a certain interval, but the invention is not limited to this. The present invention may be, for example, the first non-joint The region 22a and the second non-joined region 22b are arranged at different intervals, or the first non-joined region 22a and the second non-joined region 22b are arranged at different intervals.

In the present embodiment, the first non-joined region 22a and the second non-joined region 22b are arranged in a non-overlapping manner in a 100% area sandwiched by the recess-forming region N1 and the cover sheet 11. However, the present invention is not Limited to this. As long as the first joining portions 21a and the second joining portions 21b are alternately arranged at least in a non-overlapping manner in an area sandwiched by the recessed portion forming area N1 and the cover sheet 11, at least 50%, the present invention is effective. Effect of the invention. With this configuration, in addition to the difficulty in grasping the swelling of the absorbent body 13 in the absorbent body 13 from the appearance, it is difficult to perceive that urination has been performed, and the softness of the outside of the diaper 10 can be improved.

<Other>

The present invention is not limited to the above-mentioned embodiments or the modification examples described everywhere, and can be appropriately changed or modified without departing from the technical idea of the present invention.

For example, the structure of the diaper of each of the above embodiments is not limited to the unfolded type as described above, and may be any structure as long as it is a diaper including the structure of an absorbent article specified in the scope of the patent application. For example, the present invention can also be applied to a shorts-type disposable diaper, a urine absorbent pad, and the like.

In addition, in each of the above embodiments, the plurality of recessed portions 20 are formed on the top sheet 14 side of the absorbent body 13, but the present invention is not limited to this. For example, a plurality of recesses 20 may be formed on the bottom sheet 12 side of the absorber 13, or a plurality of recesses 20 may be formed on the top sheet 14 side of the absorber 13 and the bottom sheet 12 side (both sides of the absorber 13).

In addition, each of the embodiments described above is continuous by a plurality of recesses 20. The ground is formed on the surface of the absorber 13 to form an oblique grid-like arrangement pattern, but it is not limited to this. For example, a plurality of recesses 20 may be intermittently formed on the surface of the absorber 13, and the arrangement pattern of the recesses 20 may be a polygonal arrangement pattern such as a triangle, a hexagon, or a linear, curved, or wavy pattern. Various arrangement patterns, such as a pattern formed side by side.

In each of the above-mentioned embodiments, in order to exert the effect of the present invention, a non-joined region (the first non-joined region 22a or the second non-joined region 22b) is divided into a region surrounded by the recessed portion forming region N1 and the cover sheet 11 and added. In the case of installation, the non-joined area is preferably larger than the joined portion (the first joined portion 21a or the second joined portion 21b).

Claims (6)

An absorbent article comprising a liquid-permeable front-side sheet, a liquid-impermeable back-side sheet, an absorber, and a cover sheet joined to the outer surface of the back-side sheet through a second joining portion The absorbent system is disposed between the front-side sheet and the back-side sheet, is composed of a covering member covering an absorbent body composed of SAP, and is connected to the back-side sheet through the first joining portion And the coating member; characterized in that the absorber is provided with a concave portion forming area in which a plurality of concave portions are formed by pressing the absorber, and the cover sheet is enclosed by the concave portion forming area The area of 50% or more of the clip is arranged so that at least the first bonding portion and the second bonding portion do not overlap. The absorbent article according to claim 1, wherein at least the first joining portion and the second joining portion are arranged in a region sandwiched between the region formed by the recess and the cover sheet so as not to overlap. The absorbent article according to claim 2, wherein the first joining portion is not arranged in the area sandwiched between the area formed by the recess and the back sheet. The absorbent article according to claim 2, wherein the second joining portion is not disposed in the area formed by the recessed portion and the cover sheet. The absorbent article according to claim 2, wherein the first joining portion and the second joining portion are alternately arranged at regular intervals in a region sandwiched between the region formed by the recess and the cover sheet. The absorbent article according to any one of claims 1 to 5, wherein the concave portion is formed up to the end of the absorbent body.