JP2021186273A - Absorbent article - Google Patents

Abstract

To provide an absorbent article which reduces return of excretion liquid absorbed by a second absorber to a first absorber.SOLUTION: An absorbent article (1) has a longitudinal direction, a width direction, and a thickness direction, and has a multilayer absorber (100) that is provided with a first absorber (10) provided with a first absorbent core (11) and a second absorbent core (20) that is provided with a second absorber (21) and is arranged on a non-skin side of the first absorber (10) in the thickness direction. The multilayer absorber (100) has a hydrophobic region (H) that is provided with a hydrophobic part and a non-hydrophobic region (N) that is not provided with a hydrophobic part (25) when seen in the thickness direction at a boundary between the first absorber (10) and the second absorber (20) in the thickness direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to an absorbent article.

Sanitary napkins, light incontinence pads, and the like are known as absorbent articles that absorb excrement such as urine. For example, in Patent Document 1, a hydrophilic liquid diffusion sheet is provided between the upper layer absorber and the lower layer absorber, and the excrement liquid absorbed by the upper layer absorber is diffused in a plane by the liquid diffusion sheet before the lower layer. An absorbent article to be absorbed by an absorber is described.

Japanese Unexamined Patent Publication No. 2013-106634

In the absorbent article described in Patent Document 1, the excrement liquid once absorbed by the lower layer absorber returns to the upper layer absorber, and the excretion liquid returned to the upper layer absorber may cause discomfort to the wearer. rice field.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is an absorbent article that reduces the return of excrement liquid absorbed by the second absorber to the first absorber. Is to provide.

The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction, and includes a first absorber having a first absorbent core and a second absorbent core, and the thickness direction. An absorbent article having a multilayer absorber comprising a second absorber disposed on the non-skin side of the first absorber, wherein the multilayer absorber is the first in the thickness direction. At the boundary between the absorber and the second absorber, in the hydrophobic portion having hydrophobicity, a hydrophobic region having a hydrophobic portion and a non-hydrophobic region having no hydrophobic portion when viewed in the thickness direction, It is an absorbent article characterized by having.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, the multi-layer absorber can absorb a larger amount of excrement, and the hydrophobic region makes it difficult for the excrement absorbed by the second absorber to return to the first absorber. It is possible to reduce the possibility that the excrement liquid leaks from the body or the excrement liquid absorbed by the second absorber returns to the first absorber, causing discomfort to the wearer.

It is a top view of the light incontinence pad 1 in the extended state as seen from the skin side. It is a top view of the pad 1 in the extended state as seen from the non-skin side. FIG. 3 is a schematic cross-sectional view of the pad 1 taken along line II of FIG. It is an enlarged view of the part Z in FIG. It is explanatory drawing of the slip prevention part 30, the joint part 50, and the separation part 60. It is the schematic sectional drawing explaining the end part in the width direction of a pad 1. FIG. 3 is a plan view of the pad 1S in another embodiment as viewed from the skin side. FIG. 3 is a schematic cross-sectional view of the pad 1S in another embodiment.

The description of this specification and the accompanying drawings will clarify at least the following matters.
It has a longitudinal direction, a width direction, and a thickness direction, and has a first absorber having a first absorbent core and a second absorbent core, and is non-skin side of the first absorbent body in the thickness direction. An absorbent article having a multilayer absorber comprising a second absorber disposed in the above, wherein the multilayer absorber is a boundary between the first absorber and the second absorber in the thickness direction. The absorbent article is characterized by having a hydrophobic region having a hydrophobic portion and a non-hydrophobic region not having the hydrophobic portion in the portion in the thickness direction.

According to such an absorbent article, the multilayer absorber absorbs more excrement, and the hydrophobic region reduces the return of the excrement absorbed by the second absorber to the first absorber. This can reduce the risk of the excrement leaking from the absorbent article or causing discomfort to the wearer due to the excrement absorbed by the second absorber returning to the first absorber. ..

The absorbent article has a superposed region in which the first absorber and the second absorber overlap when viewed in the thickness direction, and the superposed region has a portion overlapping the hydrophobic region. It is desirable that the superposed region has a portion that also overlaps with the non-hydrophobic region.

According to such an absorbent article, since the superposed region has a portion overlapping with the non-hydrophobic region, the portion where the superposed region overlaps with the hydrophobic region while moving the excrement liquid absorbed by the first absorber to the second absorber. Therefore, the hydrophobic region makes it difficult for the excrement fluid absorbed by the second absorber to return to the first absorber, and the excretion fluid leaks from the absorbent article, or the excretion fluid absorbed by the second absorber is the first absorber. It is possible to reduce the risk of causing discomfort to the wearer due to returning to.

In such an absorbent article, when viewed in the thickness direction, a superposed region where the first absorber and the second absorber overlap and a non-superimposed region where the first absorber and the second absorber do not overlap. It is desirable that the hydrophobic region is provided in the non-superimposed region and the non-hydrophobic region is provided in the superposed region.

According to such an absorbent article, the first absorber and the second absorber absorb more excrement, and in the superposed region, the excrement absorbed by the first absorber becomes the second absorber. In the non-superimposed region, it is possible to reduce the risk that the excrement absorbed by the second absorber will move to the skin side of the second absorber, and the excrement may leak from the absorbent article. It can be reduced. Further, when the first absorber is larger than the second absorber, even if a force in the thickness direction is applied to the portion overlapping the non-superimposed region due to a change in the sitting posture of the wearer or the like, it is viewed in the thickness direction. In the non-skin side of the first absorber that overlaps the non-superimposed region, the excrement absorbed by the first absorber is transferred from the non-skin side of the first absorber to the non-skin side by the hydrophobic region provided in the non-superimposed region. It is possible to reduce the risk of leaking toward.

In such an absorbent article, an adhesive portion is provided on the non-skin side surface of the second absorber, and is provided at a predetermined position in the longitudinal direction at least in the central portion in the width direction, and the first absorber is provided. A joint portion to which the second absorber is joined, and a pair of separating portions provided at both ends in the width direction and separated from the first absorber and the second absorber. It is desirable to have.

According to such an absorbent article, the excrement liquid absorbed by the second absorber is less likely to return to the first absorber than when the first absorber and the second absorber are in contact with each other at the separated portion. Become.

In such an absorbent article, it is desirable that the non-hydrophobic region has a portion that does not overlap with the separation portion when viewed in the thickness direction.

According to such an absorbent article, it is possible to reduce the risk of hindering the movement of the excrement liquid from the first absorber to the second absorber.

In such an absorbent article, it is desirable that the adhesive portion has a portion that overlaps with the separation portion when viewed in the thickness direction.

According to such an absorbent article, since the second absorber easily responds to the movement of the underwear side adhered by the adhesive portion, the first absorber and the second absorber are in contact with each other at the separated portion. It is possible to further reduce the return of the excrement liquid absorbed by the second absorber to the first absorber as compared with the case.

In such an absorbent article, it is desirable that the hydrophobic region has a portion overlapping the separated portion when viewed in the thickness direction.

According to such an absorbent article, the excrement liquid absorbed by the second absorber returns to the first absorber in the portion of the separated portion that overlaps with the hydrophobic region when viewed in the thickness direction. Can be mitigated.

In such an absorbent article, a pair of elastic members that expand and contract in the longitudinal direction are arranged at both ends of the first absorber in the width direction, and the elastic members are viewed in the thickness direction. However, it is desirable to have a portion that overlaps with the separated portion.

According to such an absorbent article, the contraction of the elastic member makes it easier to separate the first absorber and the second absorber at the separating portion, and the excrement liquid absorbed by the second absorber is the first. It is possible to further reduce the return to the absorber.

In such an absorbent article, portions in which the first absorbent core is not arranged are provided at both ends of the first absorbent body in the width direction, and the first absorbent core is arranged. It is desirable that the elastic member is sandwiched between the skin-side non-woven fabric and the non-skin-side non-woven fabric from both sides in the thickness direction in the non-woven fabric.

According to such an absorbent article, the elastic member makes it easy for both ends in the width direction of the first absorber to rise, and the central portion in the width direction has a concave shape, so that the excrement liquid is an absorbent article. It is possible to reduce the risk of leakage from.

It is desirable that the hydrophobic portion of the absorbent article is the non-woven fabric on the non-skin side.

According to such an absorbent article, it is not necessary to provide a new material as the hydrophobic portion, so that the manufacturing cost can be reduced.

In such an absorbent article, it is desirable that the hydrophobic region is provided with a plurality of the hydrophobic portions in the thickness direction.

According to such an absorbent article, it is possible to further reduce the return of the excrement liquid absorbed by the second absorber to the first absorber.

In such an absorbent article, the first absorber has a groove portion recessed from the skin side toward the non-skin side, and the hydrophobic region does not have the groove portion when viewed in the thickness direction. Is desirable.

According to such an absorbent article, in the hydrophobic region, the movement of the excrement liquid between the first absorber and the second absorber can be suppressed by the groove, so that the excrement is absorbed by the second absorber. It is possible to make it difficult for the excrement to return to the first absorber.

In such an absorbent article, it is desirable that the groove portion is provided from the first absorber to the second absorber in the thickness direction.

According to such an absorbent article, the hydrophobic region makes it difficult for the excrement liquid absorbed by the second absorber to return to the first absorber, and promotes the movement of the excrement liquid from the first absorber to the second absorber. It will be easier.

In such an absorbent article, it is desirable that the basis weight of the highly absorbent polymer of the first absorbent core is higher than the basis weight of the highly absorbent polymer of the second absorbent core.

According to such an absorbent article, the water retention of the first absorbent core can be enhanced as compared with the case where the basis weight of the highly absorbent polymer of the second absorbent core is higher than that of the first absorbent core. 1 It is possible to reduce the risk that the excrement absorbed by the absorbent core will return to the wearer's skin side.

In such an absorbent article, it is desirable that the second absorbent core has a highly absorbent polymer and pulp fibers.

According to such an absorbent article, since the pulp fiber easily draws in the liquid, the excrement liquid absorbed by the first absorber is easily drawn into the second absorber, and the excrement liquid absorbed by the first absorber is the skin. It becomes easier to reduce the return to the side.

In such an absorbent article, it is desirable that the second absorbent core has pulp fibers and does not have a highly absorbent polymer.

According to such an absorbent article, the diffusivity of the excrement can be improved in the second absorbent core as compared with the case where the highly absorbent polymer is provided, so that the second absorbent core can be used in a wider range earlier. Can absorb excrement.

Among such absorbent articles, it is preferable that the second absorber has a larger maximum absorption amount of excrement than the first absorber.

According to such an absorbent article, since the second absorber is provided on the non-skin side of the first absorber, the second absorber absorbs more excrement and the wearer's skin. It is possible to further reduce the discomfort caused by the excrement liquid given to the skin.

=== This embodiment ===
Hereinafter, as an example of the absorbent article according to the present embodiment, a light incontinence pad will be described as an example. However, the absorbent article is not limited to the light incontinence pad, and examples of other absorbent articles include sanitary napkins and panty liners.

=== Basic configuration of light incontinence pad 1 ===
FIG. 1 is a plan view of a light incontinence pad 1 (hereinafter, also referred to as a “pad”) in an extended state as viewed from the skin side. FIG. 2 is a plan view of the stretched pad 1 as viewed from the non-skin side. FIG. 3 is a schematic cross-sectional view of the pad 1 taken along line II of FIG. The stretched state of the pad 1 is a state in which the pad 1 is stretched without wrinkles. Specifically, the pad 1 is extended until the dimensions of each material constituting the pad 1 are equal to or close to the dimensions of the material alone without being affected by the elastic member of the pad 1. It is in a state of being made to.

The pad 1 has a longitudinal direction, a width direction, and a thickness direction. The side that comes into contact with the wearer's skin in the thickness direction is the skin side, and the opposite side is the non-skin side. The pad 1 of the present embodiment has a configuration symmetrical in the longitudinal direction. Therefore, one side in the longitudinal direction of the pad 1 may be the ventral side of the wearer or the back side of the wearer.

As shown in FIG. 3, the pad 1 has a multilayer absorber 100, a pair of first side seats 16, a pair of second side seats 25, and a back seat 24.

The "multilayer absorber" means a stack of a plurality of absorbers in the thickness direction. The multilayer absorber 100 of the pad 1 has a first absorber 10 and a second absorber 20 arranged on the non-skin side of the first absorber 10 in the thickness direction. In the multilayer absorber 100, first, the first absorber 10 arranged on the skin side absorbs the excrement liquid, and the excretion liquid absorbed by the first absorber 10 is arranged on the non-skin side of the first absorber. By absorbing the second absorber 20, a larger amount of excrement can be absorbed, and the excrement absorbed by the first absorber 10 is transferred to the second absorber, so that the first absorber 10 can absorb the excrement. It is possible to reduce the residual excrement and improve the feel when worn. The length of the first absorber 10 of the diaper 1 in the width direction is substantially the same as the length of the second absorber 20 in the width direction, or slightly shorter than the length of the second absorber 20 in the width direction. The multilayer absorber 100 is not limited to the two absorbers (first absorber 10 and second absorber 20), and may have two or more absorbers.

The first absorber 10 includes a first absorbent core 11, a first skin-side core wrap 12 that covers the skin side surface of the first absorbent core 11, and a first non-skin that covers the non-skin side surface of the first absorbent core 11. It has a side core wrap 13, a surface sheet 14 arranged on the skin side of the first skin side core wrap 12, and an intermediate sheet 15 arranged between the surface sheet 14 and the first skin side core wrap 12. Each material is bonded with adhesives A1 to A6 such as hot melt.

The surface sheet 14 and the intermediate sheet 15 are liquid permeable sheets. As the liquid permeable sheet, a non-woven fabric (for example, an air-through non-woven fabric, a spunbonded non-woven fabric, etc.), a synthetic resin film having through holes, or the like can be adopted.

The first absorbent core 11 is a highly absorbent polymer (hereinafter also referred to as “SAP”). The first skin-side core wrap 12 and the first non-skin-side core wrap 13 are liquid-permeable sheets, and a non-woven fabric or the like can be used. In the following description, the first absorbent core 11, the first skin side core wrap 12, and the first non-skin side core wrap 13 are collectively referred to as a first core portion 11 to 13.

Both ends of the first skin-side core wrap 12 in the width direction wrap around both ends of the first absorbent core 11 and the first non-skin-side core wrap 13 in the width direction, so that the non-skinned ends of the first non-skin-side core wrap 13 are covered. It is folded back to a part on the side. A fragrance 17 is arranged between the folded portion of the first skin side core wrap 12 and the first non-skin side core wrap 13. The fragrance 17 can mask the odor of excrement and alleviate the anxiety and depression of the wearer regarding the use of the pad 1.

The first side sheet 16 is arranged at both ends of the first absorber 10 in the width direction. The first side sheet 16 is a liquid-impermeable sheet, and in the present embodiment, it is a nonwoven fabric containing hydrophobic fibers (for example, an air-through nonwoven fabric or a spunbonded nonwoven fabric). One end of the first side sheet 16 is fixed to both ends in the width direction on the non-skin side surface of the first core portions 11 to 13 with the adhesive A6 (specifically, the first skin side core wrap 12). It is fixed to the folded part). From the fixed portion, the first side sheet 16 is folded back toward the skin side surface side of the surface sheet 14 so as to wrap both end edges of the first core portions 11 to 13, the surface sheet 14, and the intermediate sheet 15 in the width direction. It has been. The other ends of the first side sheet 16 are fixed to both ends in the width direction on the skin side surface of the surface sheet 14 with the adhesive A7.

Further, one thread rubber 18 (elastic member) that expands and contracts in the longitudinal direction is arranged at the edge of the first side sheet 16 in the width direction. That is, the rubber thread 18 is fixed to the first side sheet 16 in a state of being extended in the longitudinal direction. In addition, instead of the thread rubber 18 (thread-shaped elastic member), a sheet-shaped elastic member such as an elastic film may be arranged. Further, the number of the thread rubbers 18 is not limited to one, and may be a plurality of threads. Further, in the drawing, only the stretchable portion (18a to 18b in FIG. 2) in which the stretchability is exhibited is shown among the thread rubber 18.

The second absorber 20 includes a second absorbent core 21, a second skin-side core wrap 22 that covers the skin side surface of the second absorbent core 21, and a second non-skin that covers the non-skin side surface of the second absorbent core 21. It has a side core wrap 23 and. Each material is joined with adhesives A8 to A11 such as hot melt.

The second absorbent core 21 is formed by molding liquid absorbent fibers such as pulp fibers and cellulosic absorbent fibers into a predetermined shape. Highly absorbent polymer (SAP) may or may not be added to the liquid absorbent fiber. The second skin-side core wrap 22 and the second non-skin-side core wrap 23 are liquid-permeable sheets, and for example, a tissue, a non-woven fabric, or the like can be adopted. Both ends of the second skin-side core wrap 22 in the width direction are folded back at the positions of both ends in the width direction on the non-skin side surface of the second absorbable core 21 so as to involve the second absorbable core 21. The second non-skin side core wrap 23 is arranged so as to cover the non-skin side surface of the second absorbent core 21 from the non-skin side of the folded portion of the second skin side core wrap 22. In the following description, the second absorbent core 21, the second skin side core wrap 22, and the second non-skin side core wrap 23 are collectively referred to as the second core portions 21 to 23.

The back sheet 24 is arranged on the non-skin side of the second non-skin side core wrap 23. The back sheet 24 is a liquid impermeable sheet. As the liquid-impermeable sheet, a synthetic resin film such as polyethylene (PE) or polypropylene (PP), a synthetic resin film, a composite sheet of a non-woven fabric, or the like can be adopted.

The second side sheet 25 is a pair of seat members extending outward in the width direction from both ends in the width direction on the skin side surface of the second skin side core wrap 22. Like the first side sheet 16, the second side sheet 25 is a liquid-impermeable sheet, and a non-woven fabric or the like containing hydrophobic fibers can be adopted. The back sheet 24 and the second side sheet 25 extend outward in the width direction from the first absorber 10 and the second core portions 21 to 23, and each other extends from the second core portions 21 to 23. It is joined.

The first absorber 10 and the second absorber 20 are between the adhesive A12 arranged on the skin side surface of the second side sheet 25 and the second side sheet 25 and the second core portions 21 to 23 in the thickness direction. It is joined with the arranged adhesive A8. Specifically, the first side sheet 16 and the second side sheet 25 are joined by the adhesive A12. Further, between the pair of second side sheets 25 arranged at intervals in the width direction, the first core portions 11 to 13 and the second absorber 20 are joined by the adhesive A8.

Further, as shown in FIG. 1, the planar shape of the first core portions 11 to 13 is rectangular. The planar shape of the second core portions 21 to 23 is a substantially rectangular shape in which both ends in the longitudinal direction are curved outward in the width direction. The lengths of the first core portions 11 to 13 in the width direction are substantially the same as those of the second core portions 21 to 23, or the lengths of the second core portions 21 to 23 are slightly longer and shorter in the longitudinal direction. It has become.

On the non-skin side surface of the back sheet 24, a slip prevention portion 30 (adhesive portion) to which a hot melt adhesive is applied is provided. The slip stopper 30 is attached to the skin side surface of the wearer's underwear, and the pad 1 is used in a state of being fixed to the underwear. As shown in FIG. 2, the slip prevention portion 30 includes a pair of central adhesive portions 31 arranged at intervals in the width direction and four side adhesive portions arranged outside the central adhesive portion 31 in the width direction. It has a part 32 and.

The central adhesive portion 31 has a rectangular shape having a long side in the longitudinal direction, and is continuously arranged in the longitudinal direction from one end to the other end of the pad 1. The side adhesive portion 32 has a rectangular shape having a long side in the longitudinal direction, and has a shorter length in the longitudinal direction than the central adhesive portion 31. Two of the four side adhesive portions 32 are arranged at one end in the longitudinal direction of the pad 1, and the other two side adhesive portions 32 are the other end in the longitudinal direction of the pad 1. Is located in. In other words, on the outer side of the central adhesive portion 31 in the width direction, a pair of side adhesive portions 32 are arranged at intervals in the longitudinal direction.

The pad 1 has a squeezed portion 40 in which the pad 1 is recessed in the thickness direction. The squeezed portion 40 of the present embodiment is squeezed from the skin side from the surface sheet 14 of the first absorber 10 to the second core portions 21 to 23 in the thickness direction.

In the squeezed portion 40, the thickness of the pad 1 is thinner than that of the surroundings, and the fiber density of the pad 1 is high. These comparisons should be made by a well-known method. As a comparison of the thickness of the pad 1, a method of visual comparison, a dial thickness gauge ID-C1012C manufactured by Mitutoyo Co., Ltd. or an equivalent one is used, and the target site is pressurized at, for example, 3.0 gf / cm2. It is possible to exemplify a method of acquiring and comparing the measured values. As a comparison of the densities of the pads 1, a method of comparing the cross sections of the pads 1 cut in the thickness direction based on an enlarged image with an electron microscope or the like can be exemplified.

The squeezing portion 40 extends in the longitudinal direction and extends in the width direction between the pair of first squeezing portions 41 arranged at intervals in the width direction and the pair of first squeezing portions 41 in the longitudinal direction. It has a pair of second squeezing portions 42, which are spaced apart from each other. The first squeezing portion 41 has a shape that is convexly curved inward in the width direction in the central portion in the longitudinal direction of the pad 1 (that is, in the region that abuts on the inseam of the wearer). The second squeezing portion 42 has a shape that is convexly curved outward in the longitudinal direction. However, the shape, number, and arrangement position of the squeezed portions 40 illustrated in FIG. 1 are examples, and the present invention is not limited to these. Further, the linear pressing portion 40 (41, 42) extending in the longitudinal direction or the width direction may be a groove-shaped pressing portion in which the pad 1 is continuously recessed in each direction, or may be a plurality of dot-shaped pressing portions. The squeezed portion may be a squeezed portion in which the squeezed portions are lined up in a line.

Although the basic configuration of the pad 1 has been described above, the configuration of the pad 1 is merely an example, and the configuration is not limited thereto. For example, the planar shape of the pad 1 may be asymmetrical in the longitudinal direction, or the pad 1 may not have the intermediate sheet 15 or the fragrance 17. Further, the first absorbent core 11 and the second absorbent core 21 may each be wrapped in one core wrap.

=== About the hydrophobic region H and the non-hydrophobic region N of the pad 1 ===
The multilayer absorber 100 of the pad 1 has a hydrophobic portion having hydrophobicity at the boundary portion between the first absorber 10 and the second absorber 20 in the thickness direction. Specifically, as shown in FIGS. 3 and 4, the multilayer absorber 100 has a second side sheet having hydrophobicity between the first absorber 10 and the second absorber 20 in the thickness direction. It has 25. FIG. 4 is an enlarged view of a portion Z in FIG.

The "boundary portion" between the first absorber 10 and the second absorber 20 means between the non-skin side surface of the first absorber 10 and the skin side surface of the second absorber 20 in the pad 1. Between the non-skin side surface of the first absorber 10 and the skin side surface of the second absorber 20, the non-skin side surface of the first absorber 10 and the skin side surface of the second absorber 20 are included.

Further, the first absorber 10 and the second absorber 20 are not limited to the above-mentioned configurations, respectively. For example, the first absorber 10 and the second absorber 20 are composed of only the first absorbent core 11 and the second absorbent core 21 without the core wraps (11, 22, 23) and the like described above, respectively. Alternatively, the first absorber 10 and the second absorber 20 may be a part of the above-mentioned core wraps (11, 22, 23) or other constituent members, respectively, or may include members other than the above-mentioned constituent members. ..

The “hydrophobic” refers to a characteristic that the liquid does not spread easily when the liquid is dropped on the surface, and is preferably a portion having a characteristic that the dropped liquid has a contact angle larger than 90 °. That is, the hydrophobic region H is a region that reduces the movement of the liquid, and the non-hydrophobic region N is a region that does not hinder the movement of the liquid. The “hydrophobic portion” refers to a portion provided with a hydrophobic member, and the hydrophobic portion may be a hydrophobic sheet member such as the second side sheet 25, or a portion coated with a hydrophobic agent. There may be.

The second side sheet 25 is a hydrophobic non-woven fabric. The hydrophobic fiber contained in the hydrophobic non-woven fabric can be used without particular limitation as long as it is used in the art, and for example, polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate co-weight. Olefin fibers such as coalesced (EVA), polyethylene terephthalate (PET) and the like can be adopted alone or in combination of two or more.

As shown in FIGS. 1, 3, and 4, when the pad 1 is viewed in the thickness direction, the multilayer absorber 100 includes a hydrophobic region H having a hydrophobic portion (second side sheet 25) and a hydrophobic portion. It has a non-hydrophobic region N and no. This allows the excrement to move from the first absorber 10 to the second absorber 20 in the non-hydrophobic region N, as shown by the arrow S1 in FIG. 4, while allowing the second absorber in the hydrophobic region H. As shown by the arrow S2 in FIG. 4, the excrement liquid once absorbed in 20 can be made difficult to return to the first absorber 10. As a result, it is possible to reduce the possibility that the excrement liquid of the first absorber 10 comes into contact with the wearer's skin and causes discomfort to the wearer.

Specifically, in the non-hydrophobic region N, since the excrement can be transferred from the first absorber 10 to the second absorber, it is first absorbed by the first absorber 10 (first absorbent core 11). The excrement liquid moves from the first absorber 10 to the second absorber 20 in the non-hydrophobic region N and is absorbed by the second absorber 20 (arrow S1 in FIG. 4). In the hydrophobic region N of the excrement liquid absorbed by the second absorber 20, the hydrophobic second side sheet 25 makes it difficult for the excrement liquid to return from the second absorber 20 to the first absorber 10 (arrow in FIG. 4). S2). Therefore, the excrement liquid absorbed by the second absorber 20 is difficult to return to the first absorber 10, and the excretion liquid of the first absorber 10 comes into contact with the wearer's skin, causing discomfort to the wearer. It is possible to reduce the risk of getting rid of it.

Further, as shown in FIGS. 1, 3, and 4, when the pad 1 is viewed in the thickness direction, the superposed region X is the hydrophobic region H in the superposed region X where the first absorber 10 and the second absorber 20 overlap. It is preferable to have a portion Hx that overlaps with the non-hydrophobic region N and a portion Nx that overlaps with the non-hydrophobic region N. By having a portion Hx that overlaps with the hydrophobic region H in the superposed region X, the excrement liquid absorbed by the first absorber 10 can be moved toward the second absorber 20 (direction of arrow S1 in FIG. 4). However, the excrement liquid once absorbed by the second absorber 20 is returned to the first absorber 10 by the portion Nx where the superposed region X overlaps with the hydrophobic region H, because the hydrophobic second side sheet 25 reduces. (Arrow S2 in FIG. 4), the movement of excrement from the second absorber 20 to the first absorber 10 is reduced, and the excrement returned to the first absorber 10 causes discomfort to the wearer. It is possible to reduce the risk of getting rid of it.

The pad 1 has a first absorber 10 and a second absorber 20, but both ends of the first absorber 10 in the width direction are not joined to the second absorber 20. That is, the pad 1 has a joint portion 50 to which the first absorber 10 and the second absorber 20 are joined at the central portion in the width direction, and the first absorber 10 at both ends in the width direction. It has a pair of separating portions 60 that are separated from the second absorber 20. FIG. 5 is an explanatory diagram of a slip prevention portion 30, a joint portion 50, and a separation portion 60. FIG. 6 is a schematic cross-sectional view illustrating an end portion of the pad 1 in the width direction. In FIG. 5, the joint portion 50 and the slip prevention portion 30 are shown overlapping in the thickness direction, and the outline of the joint portion 50 is shown by a thick line.

Specifically, as shown in FIG. 3, the first absorber 10 and the second absorber 20 are the adhesive A12 between the first side sheet 16 and the second side sheet 25, and the first core portions 11 to 1. It is bonded with the adhesive A8 between 13 and the second core portions 21 to 23. Therefore, as shown in FIG. 5, the region inside the outer end of the adhesive A12 in the width direction is designated as the joint portion 50. In the joint portion 50, the adhesive is not limited to be arranged in the entire area thereof, and the adhesive may be arranged intermittently according to the application pattern of the adhesive.

As shown in FIG. 6, in the pad 1 having the joint portion 50 and the separation portion 60, the pair of separation portions 60 (both ends in the width direction) of the first absorber 10 are on the skin side with respect to the second absorber 20. It becomes possible to stand up. Specifically, as shown in the cross-sectional view of FIG. 4, the portion of the first absorber 10 outside the adhesive A12 for joining the first side sheet 16 and the second side sheet 25 is on the skin side. It becomes possible to stand up.

When the cross-sectional shape of the pad 1 is made into a saucer shape, even when a relatively large amount of excrement liquid is excreted in the first absorber 10, the excretion liquid can be dammed up by the standing separation portion 60 of the first absorber 10. It can suppress the lateral leakage of excrement. Further, since the excrement liquid is collected in the central portion in the width direction of the first absorber 10 by the slope of the upright separation portion 60, the excretion liquid is easily absorbed and held inside the pad 1. Therefore, the leakage of the excrement liquid from the pad 1 can be suppressed.

In the pad 1, since the first absorber 10 and the second absorber 20 are separated from each other at the separating portions 60 provided at both ends in the width direction, the first absorber 10 and the second absorber 20 are separated from each other. It is easier to move the first absorber 10 away from the second absorber 20 than in the case of contact, and it is possible to make it difficult for the excrement liquid absorbed by the second absorber 20 to return to the first absorber 10.

A pair of thread rubbers 18 that expand and contract in the longitudinal direction are arranged at both ends (a pair of separation portions 60) in the width direction of the first absorber 10, and the thread rubbers 18 are separated when the pad 1 is viewed in the thickness direction. It is preferable to have a portion that overlaps with the portion 60. The shrinkage of the rubber thread 18 improves the uprightness of the separating portion 60 of the first absorber 10, and as shown in FIG. 6, the cross-sectional shape of the pad 1 becomes a saucer shape. That is, since the thread rubber 18 makes it easy to separate the first absorber 10 and the second absorber 20 in the separating portion 60, the excrement liquid absorbed by the second absorber 20 returns to the first absorber 10. It becomes difficult. The rubber thread 18 may be arranged over the entire length of the separation portion 60 provided long in the longitudinal direction, or as in the present embodiment, the thread rubber 18 may be arranged in a part of the separation portion 60 in the longitudinal direction. The rubber 18 may be arranged.

Further, the outer side of the first absorber 10 in the width direction has a portion where the first absorbent core 11 is not arranged. That is, as shown in FIG. 4, in the pad 1, the outer end portion of the first side sheet 16 in the width direction extends outward in the width direction from the end edge of the first core portions 11 to 13. At this time, it is preferable that the rubber thread 18 is sandwiched between the skin-side non-woven fabric (16a) and the non-skin-side non-woven fabric (16b) from both sides in the thickness direction. Of the first side sheet 16 folded in two in the width direction, when the portion located on the skin side is the non-woven fabric 16a on the skin side and the portion located on the non-skin side is the non-woven fabric 16b on the skin side, the skin side is used. The non-woven fabric 16a and the non-woven fabric 16b on the non-skin side are bonded with adhesives A6 and A7 with a thread rubber 18 sandwiched between them. As a result, as compared with the case where the first absorbent core 11 is arranged up to the end in the width direction of the separation portion 60, the uprightness of the separation portion 60 is improved, and the central portion in the width direction becomes a concave shape. Therefore, the leakage of excrement can be suppressed.

The first side sheet 16 which is a hydrophobic non-woven fabric is arranged on most of the skin side surface of the separation portion 60. The first side sheet 16 is a non-woven fabric containing hydrophobic fibers, and the hydrophobic fibers can be adopted without particular limitation as long as they are used in the art. For example, potiethylene (PE), polypropylene, etc. PP), olefin fibers such as ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET) and the like can be adopted alone or in combination of two or more. Since the skin-side nonwoven fabric 16a on the outermost side of the skin of the separating portion 60 is provided with the hydrophobic portion, it is possible to suppress the leakage of excrement to the outside in the width direction of the pad 1.

By providing a plurality of hydrophobic portions at the boundary between the first absorber 10 and the second absorber 20, the hydrophobicity is further improved, and the excrement once absorbed by the second absorber 20 is first absorbed. You can prevent it from returning to body 10. In the pad 1, in addition to the second side sheet 25 which is a hydrophobic non-woven fabric being a hydrophobic portion, the non-skin side non-woven fabric 16b of the first side sheet 16 which is a hydrophobic non-woven fabric is the first absorber 10 and the first. 2 It is provided at the boundary with the absorber 20. That is, since the hydrophobic region N is provided with two hydrophobic portions, the second side sheet 25 and the non-skin side non-woven fabric 16b, the hydrophobicity of the hydrophobic region N is improved.

Further, as shown in FIGS. 4 and 5, when the pad 1 is viewed in the thickness direction, it is preferable that the non-hydrophobic region N has a portion that does not overlap with the separation portion 60, and more preferably, the pad 1 is thickened. It is preferable that the non-hydrophobic region N is provided only in the portion where the non-hydrophobic region N overlaps with the joint portion 50 when viewed in the longitudinal direction. This facilitates the transfer of excrement from the first absorber 10 to the second absorber 20.

When the pad 1 is viewed in the thickness direction, the hydrophobic region H preferably has a portion overlapping the separation portion 60, and more preferably, when the pad 1 is viewed in the thickness direction, the entire area of the separation portion 60 is the hydrophobic region H. It is good that it overlaps with. Even if the wearer applies body pressure in the thickness direction of the pad 1 and the separation between the first absorber 10 and the second absorber 20 is shortened, the body pressure is provided at the portion overlapping the separation portion 60. The obtained hydrophobic region H can reduce the possibility that the excrement liquid absorbed by the second absorber 20 returns to the first absorber 10.

When the pad 1 is viewed in the thickness direction, the slip prevention portion 30 may have a portion that overlaps with the separation portion 60. In the present embodiment, the portion of the side adhesive portion 32 on the central side in the longitudinal direction (the portion of 321 shown in FIG. 5) overlaps with the separation portion 60. By doing so, even if the separation portion 60 is deformed, the second absorber 20 is likely to return to the original position (near the edge of the underwear) due to the restoring force of the underwear, and the first absorber 10 and the second absorber 20 are easily returned to the original position (near the edge of the underwear). It becomes easier to maintain the distance from 20. Therefore, the excrement liquid once absorbed by the second absorber 20 is less likely to return to the first absorber 10 than when the first absorber 10 and the second absorber 20 are in contact with each other.

The first absorber 10 has a groove portion (squeezed portion 40) recessed from the skin side to the non-skin side, and does not have a groove portion in the hydrophobic region H when the pad 1 is viewed in the thickness direction. Is preferable. The "groove portion" is a portion recessed in the thickness direction, and may be a recess formed as a recessed shape in advance, a recess formed by cutting, a recess formed by pressing, or the like. In the groove provided in the first absorber 10, it is easy to promote the movement of the excrement liquid from the skin side to the non-skin side of the first absorber 10, and accordingly, the first absorber 10 and the second absorber 20 It also facilitates the movement of excrement between. On the other hand, if a groove is provided in the hydrophobic region H, more excrement fluid will move to the second absorber 20 in the hydrophobic region H, and a force in the thickness direction due to the wearer's body pressure or the like will be exerted. If it is added, the excrement may easily return to the first absorber 10 side. In this respect, by not providing the groove in the hydrophobic region H, the excrement liquid absorbed by the second absorber 20 is less likely to return to the first absorber 10.

On the other hand, it is more preferable that the groove portion provided in the non-hydrophobic region N is provided from the first absorber 10 to the second absorber 20 in the thickness direction. Since the groove provided from the first absorber 10 to the second absorber 20 makes it easy to draw the excrement liquid to the second absorber 20, the excrement liquid is quickly discharged from the first absorber 10 to the second absorber 20. It will be easier to migrate.

As the groove portion, it is preferable to provide the squeezed portion 40 squeezed in the thickness direction, and as shown in FIG. 1, when the pad 1 is viewed in the thickness direction, the squeezed portion 40 may be provided in the non-hydrophobic region N. preferable. In the squeezed portion 40, the fiber density of the pad 1 is higher than that of the surroundings. Therefore, since the pad 1 is provided with the squeezing portion 40, not only is it recessed in the thickness direction, but also the excretory liquid is easily drawn in due to the capillary phenomenon, and the excretory liquid is from the first absorber 10 to the second absorber. By quickly shifting to 20, it is possible to prevent the first absorber 10 from being unable to completely absorb the excrement liquid and causing the excretion liquid to overflow and leak from the pad 1. Further, the pressing portion 40 makes it difficult for the pad 1 to lose its shape and to be twisted. The squeezed portion 40 of the present embodiment is squeezed from the skin side to the non-skin side from the surface sheet 14 to the second core portions 21 to 23.

However, the present invention is not limited to the above, and the squeezing unit 40 may individually squeeze the first absorber 10 and the second absorber 20. Further, both the squeezing portion for individually squeezing the first absorber 10 and the second absorber 20 and the squeezing portion extending from the first absorber 10 to the second absorber 20 may be provided on the pad 1.

It is preferable that the first absorbent core 11 has a higher basis weight (g / m ² ) of the highly absorbent polymer (SAP) than the second absorbent core 21. Generally, a highly absorbent polymer (SAP) has high water retention such as excrement. Therefore, the water retention of the first absorbent core 11 can be made higher than that in the case where the SAP basis weight of the second absorbent core is higher than that of the first absorbent core 11. As a result, it is possible to reduce the possibility that the excrement liquid absorbed by the first absorbent core 11 returns to the skin-side surface of the first absorbent core 11 and comes into contact with the wearer's skin. For the SAP basis weight (g / m ² ), a predetermined area is cut out as a sample from the first absorbent core 11 and the second absorbent core 21, respectively, the SAP is taken out from each sample, and the area of each sample is taken out from the SAP weight. It is obtained by removing.

It is more preferable that the first absorbent core 11 has a high absorbent polymer (SAP) with a small basis weight of pulp fibers or no pulp fibers. The first absorbent core 11 of the pad 1 is composed only of SAP. By reducing or reducing the basis weight of the pulp fiber in the first absorbent core 11, the thickness of the first absorbent core 11 becomes thinner while improving the water retention of the first absorbent core 11. 1 Absorber 10 is less likely to be twisted.

Further, like the pad 1, it is preferable that the second absorbent core 21 has a highly absorbent polymer (SAP) and pulp fibers. Pulp fibers have the property of easily drawing in liquids. Therefore, the pulp fibers of the second absorber 20 draw in the excrement liquid absorbed by the first absorber 10, and the excrement liquid is easily absorbed by the second absorber 20, so that the excrement liquid overflows from the pad 1 and leaks. Can be suppressed. Then, the excrement liquid drawn in by the pulp fiber is easily held by the highly absorbent polymer (SAP) provided in the second absorber 20, so that the excretion liquid absorbed by the second absorber 20 becomes the first absorber 10. Reduces returning. The fact that the second absorber 20 has SAP and pulp fibers can be performed by a well-known method such as visually confirming the surface or cross section of the second absorbent core 21 or confirming with an image projected by an optical microscope.

The second absorbent core 21 may have pulp fibers and may not have a highly absorbent polymer (SAP). Pulp fibers are easy to draw in liquids and have better liquid diffusivity than highly absorbent polymers (SAP). Therefore, in the second absorbent core 21 having pulp fibers and not having a highly absorbent polymer (SAP), the diffusion of excrement is not inhibited by SAP as compared with the case having a highly absorbent polymer (SAP). Therefore, the excrement is widely diffused in the plane direction of the second absorbent core 21. Therefore, it becomes easy to quickly absorb the excrement liquid in a wider range of the second absorbent core 21, and the absorption performance of the second absorbent core 21 is effectively utilized.

Further, it is preferable that the second absorber 20 has a larger maximum amount of excrement absorbed than the first absorber 10. By doing so, the excrement fluid transferred from the first absorber 10 to the second absorber 20 can be absorbed and retained by the second absorber 20, so that the excretion fluid returns to the first absorber 10 (rewet). Can be suppressed. Therefore, it is possible to reduce the possibility that the first absorber 10 cannot completely absorb the excrement liquid and the excretion liquid overflows from the pad 1 and leaks. Further, since the second absorber 20 located on the non-skin side of the first absorber 10 can absorb more excrement, the excrement absorbed by the first absorber 10 closer to the wearer's skin can be absorbed. It reduces the discomfort caused by the excrement liquid given to the wearer's skin, and improves the wearing comfort of the pad 1.

The maximum absorption amount of the excrement liquid in the first absorber 10 and the second absorber 20 can be measured, for example, according to the water absorption test method of the highly water-absorbent resin of JISK7223 (1996). Briefly, a sample (eg, 0.20 g or 1.00 g) is cut out from the first and second absorbent cores 11 and 21 included in the first and second absorbers 10 and 20 to be measured, respectively. Let the mass of the sample be a (g).
Then, the sample is put in a tea bag made of a 250 mesh nylon net. The tea bag is immersed in a test solution (deionized water or 0.9% by mass saline solution) for 1 hour. Then, the tea bag is hung (eg, 10 minutes) and drained, and the weight of the tea bag after draining is b (g). Similarly, for an empty tea bag, the weight c (g) after being immersed in the test solution and drained is measured. It is preferable to perform the above operation a plurality of times (eg, 5 times) to obtain the average value a to c (g) of the measured values.
The absorption amount W (g / g) per 1 g of the sample is calculated by the formula “W = (b-c-a) / a”. A value is calculated by multiplying the absorption amount W (g / g) of each sample by the mass of the first absorbable core 11 and the mass (g) of the second absorbable core 21, respectively. The calculated value may be compared as the maximum absorption amount (saturated absorption amount) of each of the first absorber 10 and the second absorber 20. If the basis weight and the like differ depending on the plane position of the absorbent core, for example, all of the absorbent core may be used as a sample.

=== Another embodiment ===
In the above-described embodiment, the length of the first absorbent core 11 in the width direction is substantially the same as the length of the second absorbent core 21 in the width direction, or the length of the first absorbent core 11 in the width direction. Has been described, but is not limited to the case where is slightly shorter than the second absorbent core 21. For example, as shown in FIG. 7, the length in the width direction of the first absorbent core 11 (first absorber 10) is clear from the length in the width direction of the second absorbent core 21 (second absorber 20). The pad 1S may have a short configuration. FIG. 7 is a plan view of the pad 1S in another embodiment as viewed from the skin side. FIG. 8 is a schematic cross-sectional view of the pad 1S in another embodiment. Hereinafter, with respect to another embodiment, the parts common to the configuration of the pad 1 described above have the same reference numerals and the like, and detailed description thereof will be omitted.

Similar to the above-described embodiment, the multilayer absorber 100 has a multilayer absorber 100, a pair of first side sheets 16, a pair of second side sheets 25, and a back sheet 24, and the multilayer absorber 100 has a thickness of the first absorber 10S. It has a second absorber 20S arranged on the non-skin side of the first absorber 10S in the vertical direction.

As shown in FIGS. 7 and 8, the length of the first absorber 10S in the width direction is shorter than the length of the second absorber 20S in the width direction. Similarly, each member arranged on the skin side of the second side sheet 25 such as the surface sheet 14 is shorter than the length in the width direction of each corresponding member of the diaper 1 described above.

The pad 1S has a hydrophobic portion having hydrophobicity at the boundary portion between the first absorber 10S and the second absorber 20 in the thickness direction. Specifically, as shown in FIG. 8, the multilayer absorber 100 includes a second side sheet 25 having hydrophobicity between the first absorber 10S and the second absorber 20 in the thickness direction. ing. When the pad 1 is viewed in the thickness direction, as shown in FIG. 7, it has a hydrophobic region H having the second side sheet 25 which is the hydrophobic portion and a non-hydrophobic region N having no hydrophobic portion. There is. As a result, in the hydrophobic region H in the superposed region X, the excrement liquid absorbed by the second absorber 20S is less likely to return to the first absorber 10S, and the risk of causing discomfort to the wearer is reduced. There is. On the other hand, when the pad 1S is viewed in the thickness direction, the side end portion of the second absorber 20S does not overlap with the first absorber 10S in the hydrophobic region H in the non-superimposed region Y. Regarding the hydrophobic region H in the non-superimposed region Y, the second side sheet 25 as the hydrophobic portion reduces the return of the excrement liquid from the second absorber 20S to the skin side surface, and the excrement liquid may leak from the pad 1S. Can be reduced.

Further, as shown in FIG. 7, when the pad 1S is viewed in the thickness direction, the region where the first absorber 10S and the second absorber 20S overlap is defined as the overlapping region X, and the first absorber 10S and the second absorber 20S are overlapped with each other. The region that does not overlap with 20S is defined as the non-superimposed region Y. At this time, it is preferable that the hydrophobic region H is provided in the non-superimposed region Y and the non-hydrophobic region N is provided in the superposed region X. By doing so, in the non-hydrophobic region N provided in the superposed region X, the excrement liquid absorbed by the first absorber 10S can be moved toward the second absorber 20. On the other hand, in the hydrophobic region H provided in the non-superimposed region Y, the hydrophobic portion (second side sheet 25) reduces the return of the excrement absorbed by the second absorber 20S to the first absorber 10S. It is possible to reduce the risk of excrement returning from the second absorber 20S to the first absorber 10S and causing discomfort to the wearer.

In the pad 1S shown in FIGS. 7 and 8, the superimposing region X is provided with the hydrophobic region H and the non-hydrophobic region N, and the non-superimposing region Y is provided with only the hydrophobic region H, but the present invention is not limited to this. The superimposed region X may be provided with only the non-hydrophobic region N, and the non-superimposed region Y may be provided with the hydrophobic region H and the non-hydrophobic region N.

As another embodiment, the configuration in which the length in the width direction of the first absorbent body 10 is clearly shorter than the length in the width direction of the second absorbent body 20 has been described, but the present invention is not limited to this, and the first absorbent body is not limited to this. The widthwise length of the 10 may be clearly longer than the widthwise length of the second absorber 20. When the length in the width direction of the first absorber 10 is longer than the length in the width direction of the second absorber 20, the pad 1 is viewed in the thickness direction, and the first absorber 10 is the non-superimposed region Y. It has overlapping parts. In this case, even if a force in the thickness direction is applied to the portion overlapping the non-superimposed region Y due to a change in the sitting posture of the wearer, the non-superimposed side surface of the first absorber overlapping the non-superimposed region Y is non-superimposed. The hydrophobic region H provided in the region Y can reduce the possibility that the excrement absorbed by the first absorber 10 leaks from the non-skin side surface of the first absorber 10 toward the non-skin side.

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

In the above-described embodiment, the second side sheet 25 is used as a hydrophobic portion, and the non-skin side non-woven fabric 16b of the first side sheet 16 which is a hydrophobic non-woven fabric is used to improve the hydrophobicity of the hydrophobic region H. , Not limited to this. When the pad 1 has the hydrophobic second side sheet 25, the non-woven fabric 16b on the first side sheet 16 may not be arranged, and the non-woven fabric 16b on the non-skin side may be used as a hydrophilic sheet member. May be. Alternatively, the pad 1 may not have the hydrophobic second side sheet 25, and the non-skin side non-woven fabric 16b of the hydrophobic first side sheet 16 may be arranged as a hydrophobic portion. In this case, since it is not necessary to use the second side sheet 25, the material of the pad 1 can be reduced and the manufacturing cost can be reduced.

Further, in the above-described embodiment, when the pad 1 is viewed in the thickness direction, both ends of the second absorber 20 in the width direction overlap with the second side sheet 25 and have a pair of hydrophobic regions H. , Not limited to this. The hydrophobic region H can be provided in any number and any place. For example, when the pad 1 is viewed in the thickness direction, the hydrophobic region H may be provided in the region overlapping the one side end portion or the other side end portion in the longitudinal direction of the second absorber 20. Further, when the pad 1 is viewed in the thickness direction, the hydrophobic region H may be provided only in the region where the first absorber 10 and the second absorber 20 do not overlap (non-superimposition region Y). ..

1 pad (light incontinence pad, absorbent article), 10 1st absorber, 11th absorbent core, 12 1st skin side core wrap, 13 1st non-skin side core wrap, 14 surface sheet, 15 intermediate sheet, 16th 1 side sheet (hydrophobic part), 16a non-woven fabric on the skin side, 16b non-woven fabric on the skin side, 18 thread rubber (elastic member), 20 second absorbent body, 21 second absorbent core, 22 second skin side core wrap, 23 second Non-skin side core wrap, 24 back sheet, 25 second side sheet (hydrophobic part), 30 anti-slip part (adhesive part), 31 central adhesive part, 32 side adhesive part, 40 squeezed part (groove part), 41 first squeezed part (Groove part), 42 2nd pressed part, 50 joint part, 60 separated part, 100 multi-layer absorber, H hydrophobic region, N non-woven region, X superposed region, Y non-superimposed region

The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction, and includes a first absorber having a first absorbent core and a second absorbent core, and the thickness direction. An absorbent article having a multilayer absorber comprising a second absorber arranged on the non-skin side of the first absorber, wherein the multilayer absorber is the first in the thickness direction. in the boundary portion between the absorber and the second absorber, wherein when viewed in the thickness direction, possess a hydrophobic region comprises a hydrophobic portion, and a non-hydrophobic region not provided with the hydrophobic portion, said first absorbent body It has a superposed region where the second absorber overlaps with the second absorber and a non-superimposed region where the first absorber and the second absorber do not overlap, and the hydrophobic region is provided in the non-superimposed region and the non-hydrophobic region is provided. Is an absorbent article, characterized in that it is provided in the superposed region.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

Claims (17)

It has a longitudinal direction, a width direction, and a thickness direction.
A first absorber with a first absorbent core and
An absorbent article comprising a second absorbent core and a multilayer absorber comprising a second absorber disposed on the non-skin side of the first absorber in the thickness direction.
The multilayer absorber is provided at the boundary between the first absorber and the second absorber in the thickness direction.
Looking in the thickness direction,
An absorbent article characterized by having a hydrophobic region having a hydrophobic portion and a non-hydrophobic region not having the hydrophobic portion. The absorbent article according to claim 1.
Looking in the thickness direction,
It has a superposed region where the first absorber and the second absorber overlap, and has an overlapping region.
The superposed region has a portion that overlaps with the hydrophobic region.
An absorbent article characterized in that the superposed region has a portion that also overlaps with the non-hydrophobic region. The absorbent article according to claim 1.
Seen in the thickness direction, it has a superposed region where the first absorber and the second absorber overlap, and a non-superimposed region where the first absorber and the second absorber do not overlap.
The hydrophobic region is provided in the non-superimposed region.
An absorbent article characterized in that the non-hydrophobic region is provided in the superposed region. The absorbent article according to any one of claims 1 to 3.
An adhesive portion is provided on the non-skin side surface of the second absorber.
At least in the predetermined position in the longitudinal direction
A joint portion provided in the central portion in the width direction and to which the first absorber and the second absorber are joined, and a joint portion.
An absorbent article provided at both ends in the width direction and having a pair of separating portions in which the first absorbing body and the second absorbing body are separated from each other. The absorbent article according to claim 4.
An absorbent article characterized in that the non-hydrophobic region has a portion that does not overlap with the separation portion when viewed in the thickness direction. The absorbent article according to claim 4 or 5.
An absorbent article, characterized in that the adhesive portion has a portion that overlaps with the separation portion when viewed in the thickness direction. The absorbent article according to any one of claims 4 to 6.
An absorbent article characterized in that the hydrophobic region has a portion overlapping the separated portion when viewed in the thickness direction. The absorbent article according to any one of claims 4 to 7.
A pair of elastic members that expand and contract in the longitudinal direction are arranged at both ends of the first absorber in the width direction.
An absorbent article, characterized in that the elastic member has a portion that overlaps with the separation portion when viewed in the thickness direction. The absorbent article according to claim 8.
At both ends of the first absorber in the width direction, portions where the first absorbent core is not arranged are provided.
In the portion where the first absorbent core is not arranged
The elastic member is an absorbent article characterized in that it is sandwiched between a skin-side nonwoven fabric and a non-skin-side nonwoven fabric from both sides in the thickness direction. The absorbent article according to claim 9.
An absorbent article characterized in that the hydrophobic portion is the non-woven fabric on the non-skin side. The absorbent article according to any one of claims 1 to 10.
An absorbent article characterized in that a plurality of the hydrophobic portions are provided in the hydrophobic region in the thickness direction. The absorbent article according to any one of claims 1 to 10.
The first absorber has a groove portion recessed from the skin side to the non-skin side.
An absorbent article characterized in that the hydrophobic region does not have the groove when viewed in the thickness direction. The absorbent article according to claim 12.
An absorbent article characterized in that the groove portion is provided from the first absorber to the second absorber in the thickness direction. The absorbent article according to any one of claims 1 to 13.
An absorbent article characterized in that the basis weight of the highly absorbent polymer of the first absorbent core is higher than the basis weight of the highly absorbent polymer of the second absorbent core. The absorbent article according to any one of claims 1 to 14.
The second absorbent core is an absorbent article characterized by having a highly absorbent polymer and pulp fibers. The absorbent article according to any one of claims 1 to 14.
The second absorbent core is an absorbent article characterized by having pulp fibers and no highly absorbent polymer. The absorbent article according to any one of claims 1 to 16.
An absorbent article characterized in that the second absorber has a larger maximum amount of excrement absorbed than the first absorber.

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