CN117769406A

CN117769406A - Absorbent article

Info

Publication number: CN117769406A
Application number: CN202280053714.1A
Authority: CN
Inventors: 高桥明男; 藏前亮太; 渡边久记
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2021-08-19
Filing date: 2022-07-07
Publication date: 2024-03-26
Also published as: JP2023029233A; WO2023021876A1

Abstract

The absorbent article (1) provided by the invention comprises an absorbent body (2) having an absorber (3), and a disposal tape (10) is arranged on a non-skin-facing surface, wherein the absorber (3) comprises an absorbent sheet, the absorbent sheet has a structure in which an absorbent polymer is sandwiched between 2 liquid-permeable sheets that are the same or different, the disposal tape (10) is arranged at a position overlapping the absorber (3) when the absorbent article (1) is viewed from above, and the components of the liquid-permeable sheets from the disposal tape (10) to the skin-facing surface side of the absorber (3) are integrated in a region from the disposal tape (10) to the thickness direction of the absorber (3).

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article comprising a disposal tape.

Background

As an absorbent article that can be easily and hygienically disposed of after use, there is known an article in which a disposal tape is provided on an outer surface of the absorbent article, and the state of the absorbent article rolled into a small mass can be maintained by the disposal tape. For example, patent document 1 describes an absorbent article in which an adhesive tape fastener is fixed to the outer surface of the outer surface sheet of the rear waist panel. In the absorbent article of this document, it is described that the outer surface sheet and the pattern sheet disposed on the inner surface side of the outer surface sheet are joined together, and thus there is no concern that a part of the outer surface sheet will be broken when the tape fastener is used.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2015-154796

Disclosure of Invention

The invention provides an absorbent article comprising an absorbent body having an absorber and a disposal tape provided on a non-skin-facing surface.

In one embodiment, the absorbent body preferably includes an absorbent sheet having a structure in which an absorbent polymer is sandwiched between 2 liquid-permeable sheets that are the same or different, and the absorbent polymer is fixed by joining the 2 liquid-permeable sheets.

In one embodiment, the disposal tape is preferably disposed at a position overlapping the absorbent body when the absorbent article is viewed from above.

In one embodiment, it is preferable that the member of the liquid-permeable sheet is integrated (integrated) from the disposal tape to the skin-facing surface side of the absorber in a region in the thickness direction from the disposal tape to the absorber.

Drawings

Fig. 1 is a plan view of a pants-type disposable diaper, which is an embodiment of the absorbent article of the present invention, in a stretched state, as viewed from the skin-facing surface side.

Fig. 2 is a sectional view of fig. 1 at II-II.

Fig. 3 is a section view of fig. 1 in section III-III.

Fig. 4 (a) is a perspective view schematically showing a state in which the disposal tape is stretched during formation of the disposal form of the diaper shown in fig. 1, and fig. 4 (b) is a perspective view schematically showing a state in which the disposal tape is wound around the outer surface of the diaper in a state of being wound into a roll.

Fig. 5 (a) to (i) are plan views of the portion of the back-side outer case where the disposal tape is disposed, as viewed from the non-skin-facing surface side.

Fig. 6 (a) is a cross-sectional view schematically showing an absorbent sheet included in the diaper shown in fig. 1, and fig. 6 (b) is a perspective view schematically showing the absorbent sheet.

Detailed Description

In the absorbent article described in patent document 1, the tape fastener is disposed at a position overlapping the absorbent core when the absorbent article is viewed in plan. The absorbent core described in this document is formed by mixing superabsorbent polymer particles and fluff pulp (fluff pulp). With the absorbent core having such a structure, in the absorbent article described in this document, when the tape fastener is stretched in order to use the tape fastener, the absorbent core existing at the position overlapping the tape fastener may be loosened, and the tape fastener may float together with the outer surface sheet and the pattern sheet. Thus, the absorbent article described in this document is difficult to elongate the tape fastener, and is not easy to sufficiently prevent the tape fastener from peeling from the outer surface of the absorbent article.

The present invention relates to an absorbent article capable of eliminating the drawbacks of the prior art described above.

Fig. 1 shows a pants-type disposable diaper (hereinafter, also simply referred to as "diaper") 1 as an embodiment of an absorbent article of the present invention. As shown in fig. 1, the diaper 1 has a side portion a disposed on the side of the abdomen of the wearer in its worn state, a back portion B disposed on the back side, and a crotch portion C located between the side portion a and the back portion B. The diaper 1 has a longitudinal direction X corresponding to a direction extending from the abdomen-side portion a to the back-side portion B via the crotch portion C and a transverse direction Y orthogonal to the longitudinal direction X.

The diaper 1 includes an absorbent main body 2 and an outer body disposed on a non-skin-facing side of the absorbent main body 2. The outer case includes an abdomen-side outer case 4A disposed on the abdomen-side portion a and a back-side outer case 4B disposed on the back-side portion B. The absorbent body 2 is fixed so as to span between the abdomen-side casing 4A and the back-side casing 4B.

The diaper 1 is formed with a pair of side seals (not shown), a waist opening (not shown), and a pair of leg openings (not shown) by joining the two side portions 4e, 4e of the abdomen-side casing 4A in the longitudinal direction X and the two side portions 4f, 4f of the back-side casing 4B in the longitudinal direction X.

The abdomen-side outer case 4A and the back-side outer case 4B include an outer sheet 42, an inner sheet 41 disposed on the skin-facing surface side of the outer sheet 42, and a plurality of elastic members 43 disposed between the two sheets 41, 42. In the present embodiment, as shown in fig. 2 and 3, the members constituting the abdomen-side casing 4A and the back-side casing 4B are joined to each other by an adhesive 6. Specifically, the inner layer sheet 41 and the outer layer sheet 42 are joined by the adhesive 6.

In the present embodiment, as shown in fig. 2 and 3, the absorbent body 2 includes an absorber 3, a front sheet 21 disposed on the skin-facing side of the absorber 3, and a back sheet 22 disposed on the non-skin-facing side of the absorber 3. As shown in fig. 1, the absorber 3 includes an upper layer absorber 31 and a lower layer absorber 32 disposed on the non-skin-facing side of the upper layer absorber 31, but the absorber 3 may be a single-layer absorber composed only of the lower layer absorber 32. As shown in fig. 2, the upper layer absorber 31 and the lower layer absorber 32 are integrally covered with the core sheet 33, but in the case where the absorber is constituted by only the lower layer absorber 32, only the lower layer absorber 32 is covered with the core sheet 33.

In the present specification, when the absorber 3 is constituted only by the lower layer absorber 32, the lower layer absorber 32 can be modified to be an absorber.

As shown in fig. 1, the lower layer absorber 32 is longer than the longitudinal direction X of the upper layer absorber 31. More specifically, the lower layer absorber 32 has an extension 32e extending from the end edge of the back side B side of the upper layer absorber 31. In the present embodiment, the lower layer absorber 32 is longer than the upper layer absorber 31 not only in the longitudinal direction X but also in the lateral direction Y.

The lower layer absorber 32 is composed of 1 absorbent sheet. The absorbent sheet has a structure in which the absorbent polymer is sandwiched between 2 liquid-permeable sheets that are the same or different, and the absorbent polymer is fixed by joining 2 liquid-permeable sheets to each other. The absorbent sheet having such a structure is produced by dispersing particles of an absorbent polymer in one liquid-permeable sheet in a wet state, and superposing and pressure-bonding the other sheet by utilizing the adhesiveness caused by the water absorption of the particles. Such a production method is described in, for example, japanese patent application laid-open No. 8-246395 filed by the applicant.

In the present embodiment, as shown in fig. 1, the length (width) of the upper layer absorber 31 in the transverse direction Y is not constant over the entire length of the longitudinal direction X, and one end side of the longitudinal direction X is longer than the length and the width of the other end side of the longitudinal direction X in the transverse direction Y. In the present embodiment, the longitudinal ends having a relatively wide width are arranged on the abdomen side (front side) of the wearer of the absorbent article, among the both ends in the longitudinal direction X of the upper layer absorber 31.

The upper layer absorber 31 is composed of, for example, a fiber body of hydrophilic fibers such as cellulose represented by pulp, a mixed fiber body of the hydrophilic fibers and an absorbent polymer, or the like.

In the present embodiment, as shown in fig. 2 and 3, the members constituting the absorbent main body 2 are joined to each other by an adhesive 6. Specifically, the back sheet 22 and the cover sheet 33 are joined by the adhesive 6 at a portion covering the non-skin-facing surface of the lower absorbent 32. The extension 32e of the lower absorbent member 32 and the portion of the core sheet 33 covering the skin-facing surface of the extension 32e are joined by the adhesive 6. Further, the front sheet 21 and the portion of the core sheet 33 covering the skin-facing surface of the extension portion 32e are joined by the adhesive 6.

In the present embodiment, as shown in fig. 1 to 3, a disposal tape 10 is provided on the non-skin-facing surface of the diaper 1. Specifically, the disposal tape 10 is fixed to the non-skin-facing surface of the back-side outer case 4B, that is, the non-skin-facing surface of the outer sheet 42 of the back-side outer case 4B.

The disposal tape 10 is disposed at a position overlapping the lower absorbent 32 when the diaper 1 is viewed in plan. The disposal tape 10 may be entirely overlapped with the lower absorbent 32, or may be overlapped with only a part of the lower absorbent 32. The disposal tape 10 may have a portion thereof overlapped with the upper layer absorbent 31, but preferably not overlapped. The details of the fixing position of the disposal tape 10 will be described later.

The disposal tape 10 is a member for maintaining the disposal form of the diaper 1. The disposal tape 10 is located at a substantially central portion in the lateral direction Y in the back-side outer body 4B of the diaper 1. The disposal tape 10 is disposed so that the longitudinal direction thereof matches the longitudinal direction X of the diaper 1.

Fig. 2 shows a cross-sectional structure of the disposal tape 10 in a three-folded state. The disposal tape 10 is mainly composed of 3 parts. Specifically, the disposal tape 10 is composed of a fixing portion 12, an extension portion 15, and a fixing portion 18. The 3 portions are arranged in this order along the longitudinal direction of the disposal tape 10. Further, these 3 portions are in a three-fold state in which they are sequentially stacked. There are no other members between the fixed portion 12 and the elongated portion 15, and the two are directly connected (continuously disposed). Similarly, there are no other members between the extension portion 15 and the fixed portion 18, and the two members are directly connected to each other. In fig. 2, for convenience of explanation, gaps are illustrated between the fixed portion 12 and the extension portion 15 and between the extension portion 15 and the fixed portion 18.

The fixing portion 12 of the disposal tape 10 has a fixing portion sheet 13. The fixing portion sheet 13 has a 1 st surface 13a and a 2 nd surface 13b. In the disposal tape 10 in the three-folded state, the 1 st surface 13a of the fixing portion sheet 13 is opposed to the extension portion 15, and the 2 nd surface 13b is opposed to the outer surface of the diaper 1, except for a folded-back portion 13' described later. The fixing portion 12 includes a fixing portion adhesive portion 14. The fixing portion adhesive portion 14 is provided on the 2 nd surface 13b of the fixing portion sheet 13. The fixing portion 12 is fixed to the outer surface of the back-side outer body 4B in the diaper 1 by the fixing portion adhesive portion 14. The disposal tape 10 is non-detachably fixed to the outer surface of the back-side outer body 4B in the diaper 1 via the fixing-portion adhesive portion 14. As a method of fixing the disposal tape 10 to the outer surface of the diaper 1, a known method such as an adhesive such as a hot-melt adhesive or welding can be used. In the present embodiment, the fixing portion 12 has a shape that is long in one direction, and has a longitudinal direction and a width direction.

The extension 15 has an extension piece 16. The extension piece 16 may have the same length as the fixing piece 13 described above, or may have a different length. The extension portion sheet 16 may have the same width as the fixing portion sheet 13 or may have a different width. The extension piece 16 has a 1 st surface 16a and a 2 nd surface 16b. In the disposal tape 10 in the three-folded state, the 1 st surface 16a of the extension portion sheet 16 faces the fixed portion 18, and the 2 nd surface 16b faces the fixed portion 12, except for a folded portion 16 'and a portion overlapping with the folded portion 13', which will be described later.

The extension 15 has an extension adhesive portion 17. The extension adhesive portion 17 is provided on the 2 nd surface 16b of the extension sheet 16. The extension adhesive portion 17 joins the extension portion 15 and the fixed portion 12 of the disposal tape 10 in the three-folded state in a releasable manner. Accordingly, the extension-use adhesive portion 17 is preferably made of an adhesive having low adhesion.

As shown in fig. 2, the fixing portion 12 described above has a folded portion 13' in which the fixing portion sheet 13 is folded back toward the extension portion 15 at one end of the disposal tape 10 in the longitudinal direction X1. The folded-back portion 13' is joined to one end of the extension piece 16 of the extension portion 15 on the 2 nd surface 16b side. Thus, the fixing portion 12 and the extension portion 15 are directly connected to each other. As a method of connecting the fixing portion 12 and the extension portion 15, a known method such as an adhesive such as a hot-melt adhesive, welding, or a combination of these methods can be used.

The fastening portion 18 of the disposal tape 10 can be fastened to an arbitrary position on the outer surface of the diaper 1, and is a portion fastened to the outer surface of the diaper 1 when the disposal tape 10 is used to maintain the disposal form of the diaper 1. A holding piece 23 is provided at an end of the fixing portion 18 opposite to the folded portion 16' of the extension portion 15 in the longitudinal direction X1 of the disposal tape 10. The fastening portion 18 forms a distal end region of the disposal tape 10, and has a fastening portion sheet 19. The fixing portion sheet 19 may have the same length as the fixing portion sheet 13 or the extension portion sheet 16, or may have a different length. The fixing portion sheet 19 may have the same width as the fixing portion sheet 13 or the extension portion sheet 16, or may have a different width. The fastening portion sheet 19 has a 1 st surface 19a and a 2 nd surface 19b. In the disposal tape 10 in the three-folded state of the present embodiment, the 2 nd surface 19b of the fastening portion sheet 19 is opposed to the extension portion 15.

The fixing portion 18 has a fixing portion adhesive portion 20. The fixing portion adhesive portion 20 is provided on the 2 nd surface 19b of the fixing portion sheet 19. The fixing portion adhesive portion 20 releasably joins the fixing portion 18 and the extension portion 15 of the disposal tape 10 in the three-folded state, and reliably fixes the fixing portion 18 at an arbitrary position on the outer surface of the diaper 1. From this point of view, it is preferable to determine the degree of adhesiveness of the fixing portion adhesive portion 20.

The extension piece 16 of the extension 15 described above is folded back toward the fastening portion 18 by one end in the longitudinal direction X1 thereof to form a folded back portion 16'. The folded portion 16' is joined to one end of the fixing portion piece 19 of the fixing portion 18 on the 2 nd surface 19b side. Thus, the extension portion 15 and the fastening portion 18 are directly connected to each other. A pinching piece 23 is connected to the other end of the fixing portion piece 19 of the fixing portion 18 on the side of the 2 nd surface 19 b. The holding piece 23 is a piece separate from the fixing portion piece 19.

As a method of continuously providing the extension portion 15 and the fastening portion 18 and a method of joining the grip piece 23 and the fastening portion piece 19, known methods such as an adhesive such as a hot-melt adhesive, welding, and a combination of these methods can be used.

Fig. 4 (b) shows a disposal form of the diaper 1 when the diaper 1 after use is discarded. When the diaper 1 is discarded, the diaper 1 is rolled up from the crotch portion C toward the waist opening portion, and the rolled-up configuration shown in fig. 4 (a) is formed. In the rolled diaper 1, the disposal tape 10 provided on the back side portion B is exposed outside the rolled diaper 1.

Next, as shown in fig. 4 (a), in a state where the rolled diaper 1 is held by one hand, the holding piece 23 is held and stretched by the other hand, the tri-folded state of the disposal tape 10 is released, the disposal tape 10 is wound around the outer periphery of the rolled diaper 1 while the extension portion is elongated, and the fastening portion 18 is fastened to an appropriate position on the outer periphery of the rolled diaper 1. Fig. 4 (b) shows an example in which the fastening portion 18 is fastened to the fastening portion 12, but the position at which the fastening portion 18 is fastened is not limited to the constituent members of the disposal tape 10.

In the embodiment shown in fig. 1, the members of the liquid-permeable sheet are integrated in the region in the thickness direction from the disposal tape 10 to the lower absorbent 32, and the members of the liquid-permeable sheet are integrated in the region from the disposal tape 10 to the skin-facing surface side of the lower absorbent 32. This will be described in detail below. In the present embodiment, adjacent members are joined to each other in the region in the thickness direction of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent layer 32. More specifically, as described above, in the back-side outer body 4B and the absorbent main body 2, the members constituting them are bonded to each other by the adhesives 6, 27. As shown in fig. 2 and 3, the back-side outer case 4B and the absorbent main body 2 are also joined by an adhesive 6. Further, the disposal tape 10 is bonded to the outer surface of the back-side outer case 4B by the fixing-portion adhesive portion 14. The adhesive 6, 27 joined to each other by adjacent members may be present at positions overlapping or not overlapping the disposal tape 10 when the diaper 1 is viewed in plan.

In the present invention, "the integration of the member of the liquid-permeable sheet on the skin-facing surface side of the disposal tape to the lower absorbent layer" means that: the adhesives 6 and 27, which join the adjacent members of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent 32, are located in a tape vicinity region R consisting of a region located in the vicinity of the fixing portion 12 of the disposal tape 10 and a region overlapping the fixing portion 12 when the diaper 1 is viewed in plan. Here, the band vicinity R means: when the diaper 1 is viewed in plan, the distance D from the peripheral edge of the fixing portion 12 is preferably 150 or less, more preferably 100 or less, and even more preferably 75 or less, when the length L of the fixing portion 12 in the width direction Y of the disposal tape 10 is taken as 100 (see fig. 5 (a) to (i)). More specifically, the band vicinity region R is a region in which the distance D is preferably 15mm or less, more preferably 10mm or less, and still more preferably 5mm or less (see fig. 5 (a) to (i)).

The positions of the adhesives 6 and 27, at which the members adjacent to each other in the thickness direction are joined, may be entirely or partially overlapped.

The adhesive 6, 27 joining the members adjacent to each other in the thickness direction may be applied to the entire region between the members or may be applied to only a part of the region between the members. For example, the adhesives 6 and 27 may be applied only to the positions overlapping the fixing portions 12 of the disposal tape 10 when the diaper 1 is viewed in plan.

The pattern of application of the adhesives 6, 27 is not particularly limited, and may be, for example, stripe-shaped, spiral-shaped, or the like.

The adhesives 6 and 27 to be bonded to each other in the thickness direction may be the same type of adhesive or different types of adhesive.

The advantage of integrating the members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 is as follows.

When the member of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent 32 is integrated, the member of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent 32 can be lifted as a whole when the disposal tape 10 in the tri-folded state is unfolded and stretched as shown in fig. 4 (a). Thus, the back side exterior body 4B, which is a member to which only the disposal tape 10 is directly fixed, and the members in the vicinity thereof can be prevented from floating. That is, the force applied when the disposal tape 10 is stretched can be prevented from concentrating on the joint portion between the disposal tape 10 and the member directly joined to the disposal tape 10. As a result, the disposal tape 10 is less likely to be detached from the outer surface of the diaper 1. Therefore, the diaper 1 of the present embodiment can have an advantageous effect of easily elongating the disposal tape 10.

Referring to fig. 5 (a) to (i), the positional relationship between the adhesive 6, 27 and the belt vicinity region R, which are joined to each other, when the members of the liquid-permeable sheet on the skin-facing side from the disposal belt 10 to the lower absorbent member 32 are integrated, will be described by taking, as an example, the 1 st adhesive 6a joining the back-side outer body 4B and the back sheet 22, and the 2 nd adhesive 6B joining the back sheet 22 and the lower absorbent member 32. In fig. 5 (a) to (i), a diagonal line inclined downward to the right is shown for the portion to which the 1 st adhesive 6a is applied, and a diagonal line inclined downward to the left is shown for the portion to which the 2 nd adhesive 6b is applied. Fig. 5 (a) shows a state in which the back side casing 4B and a part of the back sheet 22 are cut.

In the example shown in fig. 5 (a), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is applied in a stripe pattern extending in the longitudinal direction X.

The distance Sa between the 1 st adhesive 6a and the 1 st adhesive 6a adjacent to each other in the longitudinal direction X is longer than the length of the longitudinal direction Lx of the fixing portion 12 of the disposal tape 10, and the 1 st adhesive 6a does not overlap with the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan. However, the 1 st adhesive 6a is located in the tape vicinity region R.

The distance Sb between the 2 nd adhesives 6b, 6b adjacent to each other in the transverse direction Y is longer than the length of the transverse direction Ly of the fixing portion 12 of the disposal tape 10, and the 2 nd adhesive 6b does not overlap with the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan. However, the 2 nd adhesive 6b is located in the tape vicinity region R.

In this way, in the example shown in fig. 5 (a), the components of the liquid-permeable sheet are integrated from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32, and the above-described effects can be achieved.

In the example shown in fig. 5 (b), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is applied in a stripe pattern extending in the longitudinal direction X.

The distance Sa between the 1 st adhesive 6a and the 1 st adhesive 6a adjacent to each other in the longitudinal direction X is shorter than the length of the longitudinal direction Lx of the fixing portion 12 of the disposal tape 10, and the 1 st adhesive 6a overlaps the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan.

The distance Sb between the 2 nd adhesives 6b, 6b adjacent to each other in the transverse direction Y is longer than the length of the transverse direction Ly of the fixing portion 12 of the disposal tape 10, and the 2 nd adhesive 6b does not overlap the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan. However, the 2 nd adhesive 6b is located in the tape vicinity region R.

Thus, in the example shown in fig. 5 (b), the members of the liquid-permeable sheet on the skin-facing surface side from the disposal tape 10 to the lower absorbent 32 are also integrated.

In the example shown in fig. 5 (c), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is applied in a stripe pattern extending in the longitudinal direction X.

The distance Sa between the 1 st adhesive 6a and the 1 st adhesive 6a adjacent to each other in the longitudinal direction X is longer than the length of the longitudinal direction Lx of the fixing portion 12 of the disposal tape 10, and the 1 st adhesive 6a does not overlap the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan. However, the 1 st adhesive 6a is located in the tape vicinity region R.

The distance Sb between the 2 nd adhesives 6b, 6b adjacent to each other in the transverse direction Y is shorter than the length of the transverse direction Ly of the fixing portion 12 of the disposal tape 10, and the 2 nd adhesive 6b overlaps the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan.

Thus, in the example shown in fig. 5 (c), the members of the liquid-permeable sheet on the skin-facing surface side from the disposal tape 10 to the lower absorbent 32 are also integrated.

In the example shown in fig. 5 (b) or (c), the 1 st adhesive 6a or the 2 nd adhesive 6b overlaps the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, and therefore, the components of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent body 32 are more firmly integrated than in the example shown in fig. 5 (a), and the above-described effects can be more remarkably achieved.

In the example shown in fig. 5 (d), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is continuously applied over the entire area between the back sheet 22 and the lower absorbent body 32.

The distance Sa between the 1 st adhesive 6a and the 1 st adhesive 6a adjacent to each other in the longitudinal direction X is longer than the length of the longitudinal direction Lx of the fixing portion 12 of the disposal tape 10, and the 1 st adhesive 6a overlaps the fixing portion 12 of the non-disposal tape 10 when the diaper 1 is viewed in plan. However, the 1 st adhesive 6a is located in the tape vicinity region R.

Thus, in the example shown in fig. 5 (d), the members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 are also integrated.

In the example shown in fig. 5 (e), the 1 st adhesive 6a is continuously applied over the entire area between the back side outer case 4B and the back sheet 22, and the 2 nd adhesive 6B is applied in a stripe shape extending in the longitudinal direction X.

Thus, in the example shown in fig. 5 (e), the members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 are also integrated.

In the example shown in fig. 5 (d) or (e), the 1 st adhesive 6a or 2 nd adhesive 6b overlaps the entire area of the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, and therefore, the components of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent member 32 are more firmly integrated than in the example shown in fig. 5 (b) or (c), and the above-described effects can be more remarkably achieved.

In the example shown in fig. 5 (f), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is applied in a stripe pattern extending in the longitudinal direction X.

Thus, in the example shown in fig. 5 (f), the members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 are also integrated.

In the example shown in fig. 5 (f), since the 1 st adhesive 6a and the 2 nd adhesive 6b overlap the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, the components of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 are more firmly integrated than in the example shown in fig. 5 (d) or (e), and the above-described effects can be more remarkably achieved.

In the example shown in fig. 5 (g), the 1 st adhesive 6a is continuously applied over the entire area between the back side outer case 4B and the back sheet 22, and the 2 nd adhesive 6B is applied in a stripe shape extending in the longitudinal direction X.

Thus, in the example shown in fig. 5 (g), the members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent member 32 are also integrated.

In the example shown in fig. 5 (h), the 1 st adhesive 6a is applied in a stripe pattern extending in the lateral direction Y, and the 2 nd adhesive 6b is continuously applied over the entire area between the back sheet 22 and the lower absorbent body 32.

Thus, in the example shown in fig. 5 (h), the members of the liquid-permeable sheet on the skin-facing surface side from the disposal tape 10 to the lower absorbent 32 are also integrated.

In the example shown in fig. 5 (g) or (h), both the 1 st adhesive 6a and the 2 nd adhesive 6b overlap the fixing portion 12 of the disposal tape 10 in plan view of the diaper 1, and the 1 st adhesive 6a or the 2 nd adhesive 6b overlaps the entire area of the fixing portion 12 of the disposal tape 10, so that the components of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent 32 are more firmly integrated than in the example shown in fig. 5 (f), and the above-described effects can be more remarkably achieved.

In the example shown in fig. 5 (i), the 1 st adhesive 6a is continuously applied over the entire area between the back side outer body 4B and the back sheet 22, and the 2 nd adhesive 6B is continuously applied over the entire area between the back sheet 22 and the lower layer absorber 32.

Thus, in the example shown in fig. 5 (i), the components from the disposal tape 10 to the lower layer absorber 32 are also integrated.

In the example shown in fig. 5 (i), since the 1 st adhesive 6a and the 2 nd adhesive 6b overlap the entire area of the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, the components of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent member 32 are more firmly integrated than in the example shown in fig. 5 (g) or (h), and the above-described effects can be more remarkably achieved.

In order to more reliably achieve the above-described effect, it is preferable that the adhesives 6a and 6b, which join adjacent members in the region in the thickness direction of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent member 32, overlap at least partially in the tape vicinity region R when the diaper 1 is viewed from above, as shown in fig. 5 (a) to (e). In view of the above-described effects, it is preferable that the adhesives 6a and 6b, which join adjacent members to each other, overlap at least partially in the region overlapping the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, as shown in fig. 5 (f) to (h), and it is more preferable that all of the adhesives 6a and 6b located in the region overlap the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed in plan, as shown in fig. 5 (i).

In the disposal tape 10 in the three-folded state, from the viewpoint of more remarkably achieving the above-described effect, it is preferable that at least the region of the fixing portion 12 overlapping with the region S (see fig. 2) from the end portion on the crotch C side of the disposal tape 10 to the end portion on the crotch C side of the grip piece 23 is located at a position overlapping with the lower absorbent body 32 when the diaper 1 is viewed from above.

The disposal tape 10 in the three-folded state is preferably such that the fixing portion 12 is positioned to overlap the extending portion 32e (see fig. 1) of the lower absorbent member 32 when the diaper 1 is viewed in plan. Since the extension 32e of the lower absorbent 32 extends from the upper absorbent 31, the upper absorbent 31 is not present in the extension 32e when the diaper 1 is viewed in plan. By positioning the fixing portion of the disposal tape 10 in the tri-folded state at a position overlapping the extending portion 32e of the lower layer absorber 32, the upper layer absorber 31 can be more effectively prevented from loosening when the disposal tape 10 is stretched, and the member (the back side outer case 4B in the present embodiment) directly fixing the disposal tape 10 can be more effectively prevented from floating. In view of more remarkably achieving this effect, it is preferable that, in the disposal tape 10 in the tri-folded state, at least the region of the fixing portion 12 overlapping with the region S from the end portion on the crotch C side of the disposal tape 10 to the end portion on the crotch C side of the grip piece 23 is located at a position overlapping with the extension portion 32e of the lower absorbent body 32.

The disposal tape 10 in the three-folded state may be such that the entire fixing portion 12 overlaps the extending portion 32e of the lower absorbent member 32 in plan view, or only a part thereof overlaps the extending portion 32e of the lower absorbent member 32. In the case where only a part of the fixing portion 12 overlaps with the extension portion 32e of the lower absorbent 32, the other part of the fixing portion 12 may overlap with the upper absorbent 31, but preferably does not overlap. In particular, in order to more effectively prevent the upper layer absorber 31 from loosening when the disposal tape 10 is stretched and to prevent the member directly fixing the disposal tape 10 from floating, it is preferable that the entire fixing portion 12 of the disposal tape 10 in the tri-folded state overlaps the extending portion 32e of the lower layer absorber 32 in a plan view. Since the disposal tape 10, particularly the fixing portion 12 of the disposal tape 10, does not overlap the upper layer absorber 31, the upper layer absorber 31 can be prevented from loosening when the disposal tape 10 is stretched, and thus, the member (the back side outer case 4B in the present embodiment) directly fixing the disposal tape 10 can be more effectively prevented from floating.

As shown in fig. 1, the diaper 1 of the present embodiment has a polymer-absent area 5 in which an absorbent polymer is absent in the extension 32e of the lower absorbent body 32. The diaper 1 may have only 1 polymer-absent area 5, or may have 2 or more polymer-absent areas 5. Fig. 1 shows a state having 2 polymer absent areas 5. The shape of the polymer non-existing region 5 is not particularly limited, and may be, for example, a rectangular shape, an elliptical shape, a circular shape, or the like. In fig. 1, a polymer-absent area 5 having a rectangular shape longer in the longitudinal direction X of the diaper 1 is shown. In addition, the absence of the absorbent polymer means that the absorbent polymer is substantially absent, and the presence of the absorbent polymer that accidentally flies is not negated.

In the present embodiment, the polymer-absent area 5 has a slit shape penetrating the lower absorbent layer 32. The polymer-absent area 5 may be a discontinuous dot line or a short line segment line in the longitudinal direction as long as it has a rectangular shape long in the longitudinal direction X of the diaper 1.

When the diaper 1 is viewed in plan, the fixing portion 12 of the disposal tape 10 is preferably positioned so as to overlap the polymer-absent area 5. Thus, even when the lower absorbent 32 absorbs liquid and the absorbent polymer of the lower absorbent 32 swells, the 2 liquid-permeable sheets included in the lower absorbent 32 are not easily separated from each other at the position overlapping the fixing portion 12, and the member directly fixing the disposal tape 10 can be more effectively prevented from floating when the disposal tape 10 is stretched. The entire fixing portion 12 may overlap the polymer-absent area 5, or only a part thereof may overlap the polymer-absent area 5. When the plurality of polymer-absent areas 5 are present, the fixing portion 12 may overlap with some of the plurality of polymer-absent areas 5 or may overlap with all of the polymer-absent areas 5 in a plan view. In order to prevent the member directly attached with the disposal tape 10 from floating more effectively, it is preferable that the attachment portion 12 of the disposal tape 10 is located at a position overlapping with the polymer-free region 5 in a plan view at least in a region S (see fig. 2) from the end of the disposal tape 10 on the crotch C side to the end of the grip piece 23 on the crotch C side.

As shown in fig. 6 (a) and (b), the absorbent sheet constituting the lower absorbent 32 is preferably a structure in which the absorbent polymer 26 is fixed by an adhesive 27 existing between the same or different 2 liquid-permeable sheets 25a, 25 b. An absorbent sheet having such a structure is described in, for example, japanese patent application laid-open No. 2018-102907 filed by the present applicant.

The adhesive 27 of the absorbent sheet 25 shown in fig. 6 (a) and (b) is disposed on the surface of each of the sheets 25a and 25b facing the absorbent polymer 26. Each of the liquid-permeable sheets 25a and 25b of the absorbent sheet 25 has a portion 28 directly joined by an adhesive 27 without the absorbent polymer 26 interposed therebetween, and a portion 29 joined by the adhesive 27 with the two liquid-permeable sheets 25a and 25b interposed therebetween by the absorbent polymer particles 26. By adopting such a structure, the particles 26 of the absorbent polymer can be held at the predetermined positions of the absorbent sheet 25, and the unexpected movement and bias of the particles 26 of the absorbent polymer can be further reduced, and the liquid absorbency of the absorbent sheet 25 can be further improved.

As the adhesive 27 of the absorbent sheet 25, an adhesive having flexibility capable of extending with a change in swelling accompanying absorption of liquid by the absorbent polymer 26 is preferably used. Examples of such raw materials include acrylic adhesives such as (co) polymers (ethylene-vinyl acetate copolymers and the like) containing one or more vinyl monomers such as 2-ethylhexyl acrylate, butyl acrylate, ethyl acrylate, cyanoacrylate, vinyl acetate, and methyl methacrylate, silicone adhesives such as polydimethylsiloxane polymers, natural rubber adhesives such as natural rubber adhesives, isoprene adhesives such as one or more polyisoprene and chloroprene, and rubber adhesives such as styrene adhesives containing one or more styrene-butadiene copolymers (SBR), styrene-isoprene-styrene block copolymers (SIS), styrene-butadiene-styrene block copolymers (SBS), styrene-ethylene-butadiene-styrene block copolymers (SEBS), and styrene-ethylene-propylene-styrene block copolymers (SEPS). They may be used singly or in combination of two or more. As shown in fig. 6, when the adhesive 27 is disposed on the surface of each of the sheets 25a and 25b facing the absorbent polymer 26, the adhesive disposed on one of the liquid-permeable sheets 25a and the adhesive disposed on the other liquid-permeable sheet 25b may be of the same kind or of different kinds.

The absorbent sheet 25 is preferably bonded to each other by the adhesive 27 in a region overlapping the disposal tape 10, more specifically, the fixing portion 12 of the disposal tape 10 when the diaper 1 is viewed from above, even when the absorbent polymer 26 absorbs liquid and swells. By using such an absorbent sheet 25 as the lower absorbent 32, even when the lower absorbent 32 absorbs liquid, and the absorbent polymer 26 of the lower absorbent 32 swells, the 2 liquid-permeable sheets 25a and 25b included in the lower absorbent 32 are not easily separated from each other, and therefore, the disposal tape 10 can be further effectively prevented from floating up when the disposal tape 10 is stretched.

Here, the state in which the absorbent polymer 26 absorbs liquid and swells refers to a state in which the absorbent polymer 26 absorbs urine or the like up to a saturated state. In order to further effectively prevent the waste tape 10 from floating when the waste tape 10 is stretched, it is preferable that the two liquid-permeable sheets 25a and 25b of the absorbent sheet 25 are bonded to each other by the adhesive 27 so that the bonded state of the two liquid-permeable sheets 25a and 25b is maintained even when the amount of liquid absorbed by the absorbent polymer 26 reaches the saturated water absorption amount of the absorbent polymer 26, and the two liquid-permeable sheets 25a and 25b are not peeled off from each other. More specifically, it is preferable that the 2 liquid-permeable sheets 25a and 25b not be peeled off from each other even when the absorbent sheet 25 is immersed in the physiological saline for 30 minutes.

In the present embodiment, it is preferable that the surfaces of the disposal tape 10 folded in the three-folded state that face each other in the thickness direction be joined so as to be peelable from each other. Further, the extension portion 15 of the disposal tape 10 is preferably extendable in the longitudinal direction of the disposal tape 10. By configuring the disposal tape 10 in such a manner, the extension portion 15 of the disposal tape 10 is extended when the disposal tape 10 is stretched, and therefore, even when the diaper 1 is inflated by absorbing liquid, the disposal tape 10 can be easily wound around the outer periphery of the diaper 1, and the diaper 1 can be easily brought into a disposal state.

In the present embodiment, the absorber 3 includes the upper layer absorber 31 and the lower layer absorber 32, but instead of this, the absorber 3 may be constituted by only the lower layer absorber 32 without including the upper layer absorber 31. That is, the absorber 3 may be constituted by only an absorbent sheet. The advantages of the absorber 3 consisting of only absorber sheets are as follows. Since the absorber 3 is composed only of the absorber sheet, and the upper absorber 31 is not present, the upper absorber 31 does not loosen when the disposal tape 10 is stretched, and thus, the member (the back-side outer case 4B in the present embodiment) directly fixing the disposal tape 10 can be further effectively prevented from floating.

Next, the constituent materials of the diaper 1 of the present embodiment will be described.

As the front sheet 21, a sheet having liquid permeability, for example, a nonwoven fabric, a perforated film, or the like can be used. The skin-facing surface side of the front sheet 21 may have a concave-convex shape. For example, a plurality of protruding portions may be formed in a scattered manner on the skin-facing surface side of the front sheet 21. Alternatively, ridge portions and groove portions extending in one direction may be alternately formed on the skin-facing surface side of the front sheet 21. For such a purpose, the front sheet 21 can be formed using 2 or more nonwoven fabrics.

On the other hand, as the back sheet 22, for example, a film which is hardly permeable to liquid, a spunbond-meltblown-spunbond laminated nonwoven fabric, or the like can be used. The film that is difficult to be permeable to liquid may be provided with a plurality of fine pores, and the film may be provided with water vapor permeability. In order to improve the touch feeling of the skin of the absorbent article, a sheet having a good touch feeling such as nonwoven fabric may be laminated on the outer surface of the back sheet 22.

As the core wrap 33, for example, a tissue made of hydrophilic fibers, a nonwoven fabric having liquid permeability, or the like can be used.

As the liquid-permeable sheet included in the absorbent sheet constituting the lower absorbent 32, a fibrous sheet mainly made of a fibrous material such as wood pulp, or the like can be used.

The present invention has been described above based on the embodiments, but the present invention is not limited to the above embodiments and can be appropriately modified.

For example, in the embodiment shown in fig. 1, one end side in the longitudinal direction X of the upper layer absorber 31 is longer and wider than the other end side in the transverse direction Y, but the length (width) of the upper layer absorber 31 in the transverse direction Y may be a constant value over the entire length of the longitudinal direction X.

In the above embodiment, the members constituting the absorbent main body 2, the abdomen-side outer cover 4A, and the back-side outer cover 4B are joined together by the adhesive 6, but for example, members adjacent to each other in the thickness direction may be joined together by a joining method other than an adhesive such as heat welding or pressure bonding. In addition, bonding using an adhesive and bonding using a bonding method other than this may be combined. When adjacent members of the liquid-permeable sheet from the disposal tape 10 to the skin-facing surface side of the lower absorbent 32 are bonded to each other by a bonding method other than an adhesive, the portion bonded to the disposal tape 10 is less likely to float when the disposal tape 10 is stretched, and the effect of the present invention that the disposal tape 10 is easily stretched can be obtained. When adjacent members of the liquid-permeable sheet on the skin-facing side from the disposal tape 10 to the lower absorbent 32 are bonded to each other by a bonding method other than an adhesive, the pattern of the bonded portions between the adjacent members is preferably the same as the pattern of the adhesive 6 in the above embodiment.

With respect to the above embodiments, the present invention further discloses the following absorbent articles.

<1>

An absorbent article comprising an absorbent body having an absorber and disposed on a non-skin-facing surface thereof a disposal tape,

the absorber comprises an absorbent sheet having a structure in which an absorbent polymer is sandwiched between 2 liquid-permeable sheets which are the same or different, and the absorbent polymer is fixed by joining the 2 liquid-permeable sheets,

the disposal tape is disposed at a position overlapping the absorber when the absorbent article is viewed from above,

in the region from the disposal tape to the thickness direction of the absorber, the members of the liquid-permeable sheet from the disposal tape to the skin-facing surface side of the absorber are integrated.

<2>

The absorbent article according to the above <1>, wherein,

the absorber is constituted only by the absorbent sheet.

<3>

The absorbent article according to the above <1>, wherein,

the absorbent body comprises an upper layer absorbent body and a lower layer absorbent body arranged on the non-skin-facing side of the upper layer absorbent body,

the lower layer absorber has the absorbent sheet.

<4>

The absorbent article according to the above <3>, wherein,

The absorbent article has a side portion disposed on the side of the wearer's abdomen in a worn state, a back portion disposed on the back side, and a crotch portion between the side portion and the back portion,

the disposal tape is provided on the outer surface of the absorbent article in a three-fold state in which a fixing portion, an extension portion, and a fastening portion fixed to the outer surface of the absorbent article are sequentially arranged along a longitudinal direction extending from the abdomen-side portion to the back-side portion via the crotch portion and sequentially stacked,

each adhesive joining adjacent members to each other in a region from the disposal tape to the lower absorbent body in the thickness direction is located in a tape vicinity region composed of a region located in the vicinity of the fixing portion of the disposal tape and a region overlapping the fixing portion when the absorbent article is viewed from above.

<5>

The absorbent article according to the above <4>, wherein,

the tape vicinity area is an area preferably 150 or less, more preferably 100 or less, and even more preferably 75 or less from the peripheral edge of the fixing portion when the length in the width direction of the fixing portion of the disposal tape is 100 in plan view of the absorbent article.

<6>

The absorbent article according to the above <4> or the above <5>, wherein,

the tape vicinity area is an area having a distance of preferably 15mm or less, more preferably 10mm or less, and still more preferably 5mm or less from the peripheral edge of the fixing portion of the disposal tape.

<7>

The absorbent article according to any one of the above <3> to <6>, wherein,

the absorbent article has a side portion disposed on the side of the wearer's abdomen, a back portion disposed on the back side, and a crotch portion between the side portion and the back portion,

in the longitudinal direction, a holding piece is arranged at the end part of the fixed connection part opposite to the extension part,

in the disposal tape in the tri-folded state, at least a region of the fixing portion overlapping with a region from the crotch-side end portion of the disposal tape to the crotch-side end portion of the holding piece is located at a position overlapping with the lower absorbent body when the absorbent article is viewed from above.

<8>

The absorbent article according to any one of the above <3> to <7>, wherein,

the lower layer absorber has an extension extending from an end edge of the back side portion side in the upper layer absorber,

the disposal tape is disposed at a position overlapping the extension portion when the absorbent article is viewed from above.

<9>

The absorbent article according to <8> above, wherein,

the disposal tape is disposed at a position that does not overlap with the upper layer absorber when the absorbent article is viewed from above.

<10>

The absorbent article according to the above <8> or the above <9>, wherein,

the fixing portion of the disposal tape in the three-folded state is located at a position overlapping with the extending portion of the lower layer absorber when the absorbent article is viewed in plan.

<11>

The absorbent article according to <10> above, wherein,

in a longitudinal direction extending from the abdomen-side portion to the back-side portion through the crotch portion, a grip piece is provided at an end portion of the fastening portion opposite to the extension portion,

in the disposal tape in the tri-folded state, at least a region of the fixing portion overlapping with a region from the end portion of the disposal tape on the crotch side to the end portion of the grip piece on the crotch side is located at a position overlapping with the extension portion of the lower absorbent body.

<12>

The absorbent article according to any one of the above <8> to the above <11>, wherein,

the lower layer absorbent body has a polymer-absent area in which the absorbent polymer is absent at least in the extension portion,

the disposal tape is disposed at a position overlapping with the polymer non-existing region when the absorbent article is viewed from above.

<13>

The absorbent article according to the above <12>, wherein,

The fixing portion of the disposal tape is located at a position overlapping with the polymer non-existing region when the absorbent article is viewed from above.

<14>

The absorbent article according to the above <12> or the above <13>, wherein,

the whole of the fixing portion overlaps with the polymer non-existing region.

<15>

The absorbent article according to the above <12> or the above <13>, wherein,

only a portion of the securing portion overlaps the polymer non-existing region.

<16>

The absorbent article according to any one of the above <12> to <15>, wherein,

In the longitudinal direction of the absorbent article, a holding piece is provided at an end portion of the fastening portion opposite to the extension portion,

in the disposal tape, at least a region of the fixing portion overlapping with a region from the end portion of the disposal tape on the crotch side to the end portion of the holding piece on the crotch side is located at a position overlapping with the polymer non-existing region in a plan view.

<17>

The absorbent article according to any one of the above <12> to <16>, wherein,

the shape of the polymer-absent area is a rectangular shape, an elliptical shape, a circular shape, or the like.

<18>

The absorbent article according to any one of the above <12> to <17>, wherein,

the absorbent article has only 1 region where the polymer is absent.

<19>

The absorbent article according to any one of the above <12> to <17>, wherein,

the absorbent article has 2 or more regions where the polymer is absent.

<20>

The absorbent article according to the above <19>, wherein,

The fixing portion overlaps with a part of the polymer non-existing region among the plurality of polymer non-existing regions in a plan view.

<21>

The absorbent article according to the above <19> or the above <20>, wherein,

the fixing portion overlaps all of the polymer non-existing region in a plan view.

<22>

The absorbent article according to any one of the above <1> to the above <21>, wherein,

the absorbent sheet has a structure in which an absorbent polymer is fixed by an adhesive present between 2 of the liquid-permeable sheets.

<23>

The absorbent article according to any one of the above <1> to <22>, wherein,

in the absorbent sheet, the absorbent polymer is fixed by an adhesive present between 2 of the liquid-permeable sheets,

in a region overlapping the disposal tape when the absorbent article is viewed from above, when the absorbent polymer absorbs liquid and swells, the 2 liquid-permeable sheets are bonded to each other by the adhesive.

<24>

The absorbent article according to the above <22> or the above <23>, wherein,

the adhesive in the absorbent sheet is disposed on a surface of each of the liquid-permeable sheets, the surface facing the absorbent polymer,

each of the liquid-permeable sheets has: a portion directly bonded by the adhesive without the absorbent polymer interposed therebetween; and two portions 29 of the liquid-permeable sheet bonded by the adhesive through the particles of the absorbent polymer.

<25>

The absorbent article according to any one of the above <22> to <24>, wherein,

the adhesive in the absorbent sheet has flexibility capable of elongating with a change in swelling accompanying absorption of liquid by the absorbent polymer.

<26>

The absorbent article according to <25> above, wherein,

the adhesive in the absorbent sheet is one or more selected from an acrylic adhesive such as a (co) polymer (ethylene vinyl acetate copolymer, etc.) containing one or more vinyl monomers such as 2-ethylhexyl acrylate, butyl acrylate, ethyl acrylate, cyanoacrylate, vinyl acetate, methyl methacrylate, etc., a silicone adhesive such as a polydimethylsiloxane polymer, etc., a natural rubber adhesive such as natural rubber, an isoprene adhesive such as one or more polyisoprene, chloroprene, etc., a rubber adhesive such as a styrene adhesive including one or more styrene-butadiene copolymers (SBR), styrene-isoprene-styrene block copolymers (SIS), styrene-butadiene-styrene block copolymers (SBS), styrene-ethylene-butadiene-styrene block copolymers (SEBS), styrene-ethylene-propylene-styrene block copolymers (SEPS), etc.

<27>

The absorbent article according to any one of the above <22> to <26>, wherein,

the adhesive disposed on one of the liquid-permeable sheets and the adhesive disposed on the other liquid-permeable sheet are of the same kind.

<28>

The absorbent article according to any one of the above <22> to <27>, wherein,

the adhesive disposed on one of the liquid-permeable sheets and the adhesive disposed on the other liquid-permeable sheet are different.

<29>

The absorbent article according to any one of the above <1> to the above <28>, wherein,

The disposal tape in the folded state is joined in such a manner that the surfaces opposing each other in the thickness direction are peelable from each other,

the extension is capable of extending in the longitudinal direction.

Industrial applicability

According to the present invention, it is possible to provide an absorbent article in which a portion to be joined to a disposal tape is less likely to float when the disposal tape is stretched, and the disposal tape is easily stretched.

Claims

1. An absorbent article comprising an absorbent body having an absorber and disposed on a non-skin-facing surface thereof a disposal tape, the absorbent article characterized in that:

2. The absorbent article of claim 1, wherein:

The absorber is constituted only by the absorbent sheet.

3. The absorbent article of claim 1, wherein:

the lower layer absorber has the absorbent sheet.

4. The absorbent article of claim 3, wherein:

5. The absorbent article of claim 4, wherein:

6. The absorbent article of claim 4 or 5, wherein:

7. The absorbent article of claim 6, wherein:

8. The absorbent article of any one of claims 4-7, wherein:

9. The absorbent article of claim 8, wherein:

10. The absorbent article of claim 8 or 9, wherein:

the whole of the fixing portion overlaps with the polymer non-existing region.

11. The absorbent article of claim 8 or 9, wherein:

12. The absorbent article of any one of claims 8-11, wherein:

13. The absorbent article of any one of claims 8-12, wherein:

14. The absorbent article of any one of claims 8-13, wherein:

the absorbent article has only 1 region where the polymer is absent.

15. The absorbent article of any one of claims 8-13, wherein:

the absorbent article has 2 or more regions where the polymer is absent.

16. The absorbent article of claim 15, wherein:

17. The absorbent article of claim 15 or 16, wherein:

18. The absorbent article of any one of claims 1-17, wherein:

19. The absorbent article of any one of claims 1-18, wherein:

20. The absorbent article of claim 18 or 19, wherein:

each of the liquid-permeable sheets has: a portion directly bonded by the adhesive without the absorbent polymer interposed therebetween; and two liquid-permeable sheets are bonded by the adhesive through the particles of the absorbent polymer.

21. The absorbent article of any one of claims 1-20, wherein:

the extension is capable of extending in the longitudinal direction.