Absorbent article with side gathers

摘要

An absorbent article that realizes favorable erection of gathers and excels in transversal leakage preventing effects. There is disclosed a vertically long absorbent article comprising a surface layer with surface sheet (2), a backside layer with backside sheet (3), an absorbent layer with absorbent body (4) interposed therebetween and a pair of gathers (5,5) formed of a sheetlike member (9) so as to have a hollow on both the side areas of the surface layer in the longitudinal direction thereof. The pair of gathers (5,5) in the state of having a three-dimensional configuration part (10) wherein the sheetlike member (9) makes a convex on the external surface side of the absorbent article in the thickness direction thereof are joined to the surface layer and/or backside layer by a junction portion (11) provided so as to extend in the longitudinal direction of the absorbent article. The three-dimensional configuration part (10) is provided so as to construct a hollow. The junction portion (11) includes a first junction edge portion (10a) defining the edge portion of the three-dimensional configuration part (10) on the inward side in the width direction thereof and a second junction edge portion (10b) defining the edge portion of the three-dimensional configuration part (10) on the outward side in the width direction thereof. Providing that L1 refers to the length of the three-dimensional configuration part (10) from the first junction edge portion (10a) to the second junction edge portion (10b) and L2 refers to the inter-junction-edge-portion distance being the distance between the first junction edge portion (10a) and the second junction edge portion (10b), the ratio thereof, L1/L2 is 2 or greater.

主权项

1. An elongated absorbent article, comprising:
a surface layer having an at least partly liquid-permeable surface sheet; a back layer having a liquid-impermeable back sheet; an absorbent layer having a liquid-retainable absorbent body arranged between the surface and back layers; a pair of gathers which are formed to be separated from each other in both sides along a longitudinal direction in the surface layer and are formed all across an anterior portion, a central portion and a posterior portion of the absorbent article extending in the longitudinal direction of the absorbent article, and which are configured to have a hollow portion in a three-dimensional-shaped portion which is convex on a skin contacting side of the absorbent article, formed with a sheet member having a connecting portion formed to extend in the longitudinal direction of the absorbent article, wherein the connecting portion includes a first connecting end and a second connecting end that are disposed between an inward edge and an outward edge of the hollow portion in a width direction of the three-dimensional-shaped portion, wherein, in the three-dimensional-shaped portion, a ratio (L1/L2) of a length L1 from the first connecting end along a surface of the gather to the second connecting end and a distance L2 between the first connecting end and the second connecting end is not less than 2, a cross-sectional shape of the gather in the width direction is a substantially Ω-shape, in which a largest width L3 of the three-dimensional-shaped portion of the gathers is greater than the distance L2 between the first and second connecting ends, and wherein the distance between the first connecting end and the second connecting end at a side of the anterior portion and the posterior portion is greater than the distance between the first connecting end and the second connecting end in the central portion, wherein a plurality of elastic members is included in the pair of gathers extending in the longitudinal direction of the absorbent article to maintain the substantially Ω-shape, and the plurality of elastic members are arranged at an inner side, a top side and an outer side of the three-dimensional shape of the pair of gathers, and wherein each of the pair of gathers has a two-layer portion which defines the hollow portion, and the two-layer portion is formed in such a way that the sheet member extends from a region more outward in the width direction than an outer edge of the absorbent body to an upper surface of an end of the absorbent body, is folded back outwardly at a first folding back portion, extends along an outer side, a top side and an inner side of the three-dimensional-shaped portion, is folded back inwardly at a second folding back portion, and extends along an inner periphery of the hollow portion within the three-dimensional-shaped portion; wherein the first connecting end comprises the first and second folding back portions that are overlapped and joined to each other, and the second connecting end is comprises a region in which opposed surfaces of the sheet member adjacent to the first folding back portion are joined to each other.