RU-2861384-C2 - ABSORBENT ARTICLE

RU2861384C2RU 2861384 C2RU2861384 C2RU 2861384C2RU-2861384-C2

Abstract

FIELD: absorbent article. SUBSTANCE: absorbent article (1) includes an absorbent unit (2) having an absorbent element (23), and an outer cover element provided on the side of the absorbent unit (2) not facing the skin. The outer cover element has a front panel (4A) and a rear panel (4B). The front panel (4A) or the rear panel (4B) has an elastic member placement zone (11) in which elastic members extending in the lateral direction (Y) of the absorbent article (1) are placed. The absorbent article (1) has an overlap zone (12a) in which the elastic member placement zone (11) overlaps the absorbent element (23) in a plan view of the absorbent article (1). In the overlap zone (12a), an overlap region (13) located on the side of the non-skin-facing surface and formed by those elements among the elements present in the overlap zone (12a) that are located closer to the non-skin-facing surface side than the absorbent element (23) has a high fibre content zone (14) having a higher percentage content of absorbent fibres than a non-overlap zone (12b) provided in the front panel (4A) or the rear panel (4B) and different from the overlap zone (12a). EFFECT: reducing the likelihood of a feeling of dampness or a feeling of humidity. 12 cl, 9 dwg

Inventors

KURAMAE, Ryota
WATANABE, HISANORI
SATO, NOBUYA

Dates

Publication Date: 20260505
Application Date: 20220707
Priority Date: 20210708

Claims (20)

1. An absorbent article containing:
- an absorbent unit having an absorbent element; and
- an outer covering element provided on the side of the absorbent unit surface not facing the skin,
wherein the outer covering element contains:
- a front panel that is provided on the front side of the wearer in the state when the absorbent article is being worn; and
- a back panel that is provided on the back side of the wearer in the state when the absorbent article is being worn,
the front panel or the back panel has an elastic element placement area containing an elastic element extending in the lateral direction of the absorbent article,
the absorbent article has an overlapping area in which the area of the elastic elements overlaps the absorbent element in a plan view of the absorbent article,
the overlapping zone includes the overlapping zone located on the side of the surface not facing the skin, and
formed by elements that are located closer to the side of the surface not facing the skin than the absorbent element, in the overlapping zone,
the front panel or the rear panel has a non-overlapping area that is different from the overlapping area, and
the overlapping zone, located on the side of the surface not facing the skin, has a high-fiber zone having a higher percentage of absorbent fibers than the non-overlapping zone,
wherein the absorbent article has a crotch portion that is provided on the crotch area of the wearer's body in the state when the absorbent article is worn, and
the overlapping area located on the non-skin side includes a first area that is located closer to the crotch portion than an imaginary line dividing the overlapping area located on the non-skin side in half in the longitudinal direction of the absorbent article and that has a higher percentage of absorbent fibers than an area other than this first area.
2. An absorbent article according to paragraph 1,
wherein the total content of absorbent fibres by weight in the overlapping area located on the side of the surface not facing the skin is two or more times greater than the total content of absorbent fibres by weight in the non-overlapping area.
3. An absorbent article according to claim 1, wherein the absorbent nonwoven material containing absorbent fibers is located in the high fiber content zone.
4. An absorbent article according to claim 3, wherein the side edges of the absorbent nonwoven material, extending in the longitudinal direction of the absorbent article, do not reach the corresponding side edges of the absorbent unit.
5. An absorbent article according to claim 3, wherein each of the two lateral portions of the absorbent unit extending in the longitudinal direction of the absorbent article has a first leakage-protecting cuff and a second leakage-protecting cuff, the free end of the second leakage-protecting cuff is located in the lateral direction of the absorbent article outside of the free end of the first leakage-protecting cuff, the second leakage-protecting cuff has an elastic element at a location close to the free end of the second leakage-protecting cuff, wherein this elastic element extends in the longitudinal direction and the absorbent nonwoven material does not overlap the elastic element of the second leakage-protecting cuff in a plan view of the absorbent article.
6. An absorbent article according to claim 3, in which the locations of the side edges of the absorbent nonwoven material, extending in the longitudinal direction of the absorbent article, coincide with the locations of the corresponding side edges of the absorbent element.

Description

Field of technology to which the invention relates [0001] The present invention relates to an absorbent article. Prior art [0002] In an absorbent article such as a disposable diaper, a backsheet is provided on the side of the absorbent element's surface not facing the skin. For example, Patent Literature 1 discloses the use of a nonwoven fabric as a backsheet of an absorbent article, wherein the nonwoven fabric comprises a first fibrous layer and a second fibrous layer located on one of the main surfaces of the first fibrous layer. Patent Literature 2 discloses the use of a liquid-impermeable sheet that is moisture-permeable as a backsheet. Patent Literature 2 also states that in the absorbent article, an outer sheet containing cellulose fibers is provided on the side of the liquid-impermeable sheet's surface not facing the skin, which serves as a backsheet. In the outer sheet according to Patent Literature 2, the cellulose fibers form a plurality of fiber clusters. List of links Patent literature [0003] Patent Literature Source 1: WO 2020/004554 Patent Literature 2: US 2019000692A1 The essence of the invention [0004] The present invention relates to an absorbent article comprising: an absorbent unit having an absorbent element and an outer covering element provided on the non-skin facing surface of the absorbent unit, wherein the absorbent article has a front portion, which must be provided on the front side of the wearer, a back portion, which must be provided on the back side of the wearer, and a crotch portion. It is preferable that in an embodiment the outer covering element has a front panel which is provided on the front side of the wearer in the state when the absorbent article is worn, and a back panel which is provided on the rear side of the wearer in the state when the absorbent article is worn. Preferably, in an embodiment, the front panel or the back panel has an elastic element placement area in which elastic elements are placed that extend in the lateral direction of the absorbent article. Preferably, in an embodiment, the absorbent article has an overlapping area in which the area of the elastic elements overlaps the absorbent element in a plan view of the absorbent article. It is preferable that in an embodiment, the overlapping zone includes an overlapping zone located on the side of the surface not facing the skin and formed by elements that are located closer to the side of the surface not facing the skin than the absorbent element, in the overlapping zone, so that the front panel or the back panel has a non-overlapping zone different from the overlapping zone, and so that the overlapping zone located on the side of the surface not facing the skin has a high-fiber content zone having a higher percentage of absorbent fibers than the non-overlapping zone. Brief description of the drawings [0005] [Fig. 1] Fig. 1 is a plan view showing a pull-on disposable diaper, which is an embodiment of the absorbent article of the present invention, in its flat, fully stretched state, as viewed from the skin-facing surface. [Fig. 2] Fig. 2 is a sectional view taken along line II-II in Fig. 1. [Fig. 3] Fig. 3 is a sectional view schematically showing a section of the diaper shown in Fig. 1, which is taken along the line III-III (a section taken in the thickness direction and the lateral direction), in the natural state of the diaper. [Fig. 4] Fig. 4 is a sectional view schematically showing the diaper shown in Fig. 1 in a state when the diaper is worn. [Fig. 5] Fig. 5 is a plan view showing a pull-on disposable diaper, which is another embodiment of the absorbent article of the present invention, in its flat, fully stretched state, as viewed from the skin-facing surface. [Fig. 6] Fig. 6 is a sectional view taken along line V-V in Fig. 5. [Fig. 7] Fig. 7 is a plan view showing a pull-on disposable diaper, which is another embodiment of the absorbent article of the present invention, in its flat, fully stretched state, as viewed from the skin-facing surface. [Fig. 8] Fig. 8 is a sectional view taken along line VII-VII in Fig. 7. [Fig. 9] Fig. 9 is a plan view showing a variation of the diaper 1 shown in Fig. 7. Description of embodiments [0006] When a liquid-impermeable sheet that is moisture-permeable is used as a backsheet, as disclosed in Patent Literature 2, moisture in the absorbent article can be reduced by allowing moisture to escape from the absorbent article. However, a problem exists in that when using a moisture-permeable sheet as a backsheet, moisture released into the area between the absorbent article and the garment causes the garment located on the outside of the absorbent article to become damp, resulting in a feeling of wetness. [0007] Patent Literature 2 describes an effect in which, to solve this problem, fiber clusters formed by cellulose fibers in the outer sheet can absorb and retain moisture that has permeated through a liquid-impermeable, moisture-permeable sheet and is intended to