Patent ID: 6770795
Filing Date: 2004-08-03
Classification: A61F

Abstract:
A disposable body fluid absorbent wearing article comprising:a liquid-pervious topsheet; a liquid-impervious backsheet; and a liquid-absorbent core disposed between said liquid-pervious topsheet and said liquid-impervious backsheet, said liquid-pervious topsheet comprising: a plurality of plastic film layer sections each having upper and lower surfaces and a thickness of from about 0.001 to about 0.05 mm; openings defined between respective pairs of adjacent one of said plastic film layer sections; and a first fibrous layer bonded to the lower surf aces of said plastic film layer sections and immediately underlying said openings, said liquid-pervious topsheet having a Klemm's water absorbency lower than 10 mm, each of said openings having a width of from about 0.05 to about 1 mm so that a total open area thereof occupies from about 3 to about 4% of a surface area of said topsheet, edges of said plastic film layer sections defining said openings being partially fibrillated so as to form rising portions having a maximum height of 1.5 mm, said first fibrous layer having component fiber having a fineness of from about 0.5 to about 20 dtex and a basis weight of from about 5 to about 60 g/m2, said liquid-absorbent core having a second fibrous layer being closely contiguous to a lower surface of said first fibrous layer and a third fibrous layer being closely contiguous to a lower surface of said second fibrous layer, said second fibrous layer having a Klemm's water absorbency lower than 35 mm but higher than a Klemm's water absorbency of said liquid-pervious topsheet by 15 mm or more and said third fibrous layer having a Klemm's water absorbency of at least 35 mm but higher than said Klemm's water absorbency of said second fibrous layer by 15 mm or more.