Patent ID: 7150729
Filing Date: 2006-12-19
Classification: A61F

Abstract:
1. A disposable pull-on wearing article having a front waist region, a rear waist region and a crotch region, said crotch region being provided with a body fluid absorbent assembly extending over said crotch region and further into said front and rear waist regions, said body fluid absorbent assembly having a substantially rectangular shape and having inner surface, outer surface and transversely opposite side edges extending substantially parallel to each other into said front and rear waist regions, said body fluid absorbent assembly being normally curved in a U-shape with said inner surface extending in said front and rear waist regions opposed to itself and, in said crotch region, said body fluid absorbent assembly having a pair of first folding guide lines extending from a midpoint of a crossline extending across said crotch region or from two points on said crossline which are equidistant in opposite directions from said midpoint to said transversely opposite side edges of said body fluid absorbent assembly placed aside toward said front waist region at a crossing angle a with respect to said crossline and a pair of second folding guide lines extending from said midpoint or said two points to said transversely opposite side edges of said body fluid absorbent assembly placed aside toward said rear waist region at a crossing angle β with respect to said crossline, and said body fluid absorbent assembly including a pair of sections of respective said transversely opposite side edges defined between said first folding guide line and said second folding guide line to be folded inwardly of said body fluid absorbent assembly along these first and second folding guide lines, said disposable pull-on wearing article further comprising: said body fluid absorbent assembly comprising a body fluid absorbent core and a body fluid pervious cover sheet adapted to cover said core and to define at least said inner surface of said body fluid absorbent assembly, said core being formed on both sides of said crotch region with notches so as to have a relatively narrow width in said crotch region and a relatively large width in said front and rear waist regions and thereby to have an hourglass-like shape as a whole, said cover sheet having a width substantially in conformity with the sections of said core lying in said front and rear waist regions but having extending outward beyond said notches in said crotch region, and said extensions of said cover sheet beyond said notches or any sheet placed upon said extensions of said cover sheet being provided with crotch region elastic members attached thereto in stretched or non-stretched state so that said crotch region elastic members extend in said back-and-forth direction and intersect said first and second folding guide lines.