CN-116472014-B - Absorbent article

Abstract

An absorbent article comprising a main body having an upper liquid-permeable top sheet, a lower liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, wherein side sheets are disposed on both sides of the main body, respectively, the absorbent article further comprises a pair of wing portions extending outward in the width direction from the main body, the wing portions are mainly formed by joining a part of the back sheet and a part of the side sheets, and in a state where the wing portions are folded back downward when worn, the side sheets are formed with a flexure portion so as to cover the folded back fold line, the flexure portion having a wheel-shaped cross section at any position in the front-rear direction including both end positions in the front-rear direction, and the widthwise outer ends of the flexure portion are positioned outward in the width direction with respect to the fold line.

Inventors

• Yoshiba Chiaki

Assignees

• 大王制纸株式会社

Dates

Publication Date

20260508

Application Date

20211125

Priority Date

20210330

Claims (4)

1. 1. An absorbent article comprising a main body having an upper liquid-permeable top sheet, a lower liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet, Wherein side sheets are respectively arranged on two sides of the main body, The absorbent article further includes a pair of wing portions extending outward in the width direction from the main body, The wing part is formed by joining a part of the back sheet and a part of the side sheet, The side sheet has an inner joining portion joined to the main body on the inner side in the width direction, an outer joining portion joined to the back sheet on the outer side in the width direction, and a non-joining portion between the inner joining portion and the outer joining portion, The non-joined portion is a portion which is not joined to a constituent element disposed on the lower side of the side sheet, is not folded in the width direction, and is not joined to each other across the entire front-rear direction of the side sheet, In a state where the wing portions are folded back to the lower side when worn, the side panels are formed with a flexible portion from the non-joined portion so as to cover the folded-back fold line, the flexible portion having a wheel-shaped cross section at any position in the front-rear direction including both end positions in the front-rear direction, The widthwise outer end of the flexure is located widthwise outside with respect to the fold line.
2. 2. The absorbent article of claim 1, wherein, The non-joint portion has a width-direction length that is 5 to 10mm longer than a distance between a width-direction outer end of the inner joint portion and a width-direction inner end of the outer joint portion in a state in which the pair of wing portions are spread.
3. 3. The absorbent article according to claim 1 or 2, wherein, The flexure is formed within the wing.
4. 4. The absorbent article according to claim 1 or 2, wherein, The widthwise inner end portions of the side panels are not folded back at least to the lower side.

Description

Absorbent article Technical Field The present invention relates to an absorbent article. Background As absorbent articles, sanitary napkins, incontinence pads, panty liners and the like are known. As a basic structure of such an absorbent article, there is generally provided a main body including a top sheet on an upper side (a side facing the skin), a back sheet on a lower side (a side facing the pants), and an absorber disposed between the two sheets. In addition, there are many side panels that are arranged on both sides of the main body in the front-rear direction so as to prevent body fluid from leaking sideways (for example, patent document 1). The side sheet is usually formed using nonwoven fabric or the like. < Prior art document > < Patent document > Patent document 1 Japanese patent laid-open publication No. 2005-312694 Disclosure of Invention < Problem to be solved by the invention > However, in a state where the absorbent article is worn, both side portions of the main body may contact the inner sides of both legs of the wearer, respectively. Here, since the side sheets disposed on both side portions are formed of nonwoven fabric or the like in many cases as described above, it is possible to somewhat reduce the uncomfortable feeling on the inner sides of both legs by virtue of the softness of the material. However, for example, when the wearer walks or runs to move the legs forward and backward, the end edges of the main body may contact the inner sides of the legs to generate friction. In this case, the wearer whose skin is fragile sometimes feels uncomfortable or painful. Accordingly, there is a need for an absorbent article structure that can reduce discomfort and the like caused by contact with the side of the main body even for wearers with fragile skin. An object of one aspect of the present invention is to provide an absorbent article that reduces discomfort and the like that may occur due to contact with a side portion of a main body. < Means for solving the problems > An aspect of the present invention provides an absorbent article including a main body having an upper liquid-permeable top sheet, a lower liquid-impermeable back sheet, and an absorber interposed between the top sheet and the back sheet, wherein side sheets are disposed on both sides of the main body, respectively, and wherein the absorbent article further includes a pair of wing portions extending outward in a widthwise direction from the main body, the wing portions being formed mainly by joining a portion of the back sheet and a portion of the side sheets, wherein in a state where the wing portions are folded back downward during wearing, the side sheets are formed with a flexure portion having a wheel-shaped cross section at an arbitrary position in a front-rear direction including both end positions in a front-rear direction, the flexure portion being located outward in the widthwise direction with respect to the folding line. < Effect of the invention > According to one aspect of the present invention, it is possible to provide an absorbent article that reduces discomfort and the like that may occur due to contact with the side portion of the main body. Drawings Fig. 1 is a plan view of an absorbent article according to embodiment 1 of the present invention. Fig. 2 is a cross-sectional view of the line I-I of fig. 1. Fig. 3 is an enlarged view of the portion of fig. 2 where the side sheet is disposed. Fig. 4 is a plan view showing a state in which the absorbent article shown in fig. 1 is worn. Fig. 5 is a cross-sectional view of line II-II of fig. 4. Fig. 6 is a diagram illustrating formation of the flexure. Fig. 7 is a plan view of an absorbent article according to embodiment 2 of the present invention. Fig. 8 is a cross-sectional view taken along line III-III of fig. 7. Fig. 9 is a plan view showing a state in which the absorbent article shown in fig. 7 is worn. Fig. 10 is a cross-sectional view taken along line IV-IV of fig. 9. Fig. 11 is a plan view of an absorbent article according to embodiment 3 of the present invention. Fig. 12 is a cross-sectional view taken along line V-V of fig. 11. Detailed Description Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, unless otherwise specified, the same or corresponding structures may be denoted by the same reference numerals, and description thereof may be omitted. < Embodiment 1 > (Basic Structure of absorbent article) First, the basic structure of an absorbent article according to an embodiment of the present invention will be described by taking a sanitary napkin as an example. Fig. 1 shows a plan view of an absorbent article 1 according to embodiment 1 of the present invention. Fig. 2 shows a cross-sectional view of the line I-I in fig. 1. As shown in fig. 1 and 2, the absorbent article 1 has a main body (absorbent article main body) 10, and the main body 10 includes an upper liquid-permeable top s