Patent ID: 6517925
Filing Date: 2003-02-11
Classification: A61F,Y10T

Abstract:
A liquid-pervious composite plastic topsheet for a disposable absorbent article which comprises:a first plastic film layer defining an upper surface of said composite plastic topsheet, a second plastic film layer defining a lower surface of said composite plastic topsheet; and a fibrous layer disposed between and joined to the first and second plastic film layers, said first plastic film layer having an upper surface, a lower surface, a thickness of from about 0.001 to about 0.05 mm, a plurality of substantially flat portions having widths of from about 0.03 to about 1 mm and extending in parallel to one another in a first direction, and a plurality of intermittent apertures extending in said first direction between said substantially flat portions so as to form a plurality of aperture rows extending in parallel one to another in said first direction, pairs of said flat portions having said aperture rows therebetween being interconnected by a plurality of bridge portions that extend therebetween and across said aperture rows, said bridge portions extending across the respective aperture rows are formed intermittently in a second direction orthogonal to the first direction, providing two types of bridge portions, those which extend upward or downward from the upper surface of the flat portions to the upper surface of the respective adjacent flat portions so as to describe arcs and those which are flush with the flat portion, said intermittent apertures being defined by edges of said substantially flat portions which extend in said first direction and edges of said bridges portions which extend in said second direction, said substantially flat portions being formed at least along said edges thereof which extend in said first direction with a plurality of first substantially pointed tooth-shaped portions which extend upward from upper surfaces of said substantially flat portions, said second plastic film layer comprising a plurality of discrete elongate strip portions that extend parallel to one another in the first direction and are spaced apart in said second direction, individual ones of said plurality of discrete elongate strip portions being aligned and configured to lie beneath at least a portion of one of each of the aperture rows of the first plastic film layer.