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US 5,273,596 AGranted
Nonwoven fabric for diaper top sheet and method of making the same
AssigneeFiberweb North America, Inc.
InventorDavid D. Newkirk
Life of this patent
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Abstract
A multi-layer, nonwoven fabric useful as an absorbent article top sheet, which is formed of a continuous first layer, comprising hydrophobic thermoplastic fibers, bonded to a second layer, comprising a blend of hydrophobic thermoplastic fibers and natural hydrophilic fibers.
Claims6
A method of making a multi-layer, non-woven fabric comprising the steps of:
- (a) forming a first, contiguous, nonwoven, fibrous web comprising at least about 75 weight percent hydrophobic thermoplastic fibers;
- (b) forming a second, nonwoven, fibrous web comprising a blend of from about 20 to about 70 weight percent hydrophobic thermoplastic fibers and from about 30 to about 80 weight percent natural hydrophilic fibers;
- (c) forming a composite web by arranging said first and second webs in an overlying adjacent relationship;
- (d) thermally bonding said first and second nonwoven webs together by causing melt-fusing of said hydrophobic thermoplastic fibers;
- and
- (e) allowing said composite web to cool to resolidify the melt-fused thermoplastic fibers and strengthen the bonds formed between said layers.
3 more elements
Dependencies are inferred from the claim text.