Biodegradable nonwoven fabrics

Details Biodegradable nonwoven fabrics Biodegradable nonwoven fabrics

1992-09-18

1996-04-09

Withers, James D.

Stock material or miscellaneous articles

Structurally defined web or sheet

Weight per unit area specified

428286, 428298, 428903, 604364, 604374, 152091, B32B 506, B32B 2700, A61F 1315, A47K 702

Patent

active

055060412

ABSTRACT:
A nonwoven fabric having biodegradability which can be advantageously used as a biodegradable material for general disposable-type household supplies represented by such items as sanitary materials, wiping cloths, and packaging materials. The nonwoven fabric is formed of a fiber material made of poly-.epsilon.-caprolactone and/or poly-.beta.-propiolactone. The nonwoven fabric contains not less than 20% by weight of such a fiber material having a filament fineness of 0.8 to 6 denier. This provides sufficient tensile strength and soft hand which enable the nonwoven fabric to be advantageously used in practical applications. Where the nonwoven fabric is formed of a superfine fiber of the above noted type having a filament fineness of less than 0.8 denier, it has particularly remarkable soft hand.

REFERENCES:
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International Search Report Form PCT/ISA/210 Dated 14 Jan. 1993 and Mailed 26 Jan 1993.
Database WPIL, Section Ch, Week 2490, Derwent Publications Ltd., London, GB; Class A96, AN 90-182403 and JP-A-2 119 866 (Teijin), 7 May 1990.
Database WPIL, Section CH, Week 1289, Derwent Publications Ltd., London, GB: Class A94, An 89-090040 and JP-A-1 040 655 (Kuraray KK), 10 Feb. 1989.

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