Degradable non-woven fabric and preparation process thereof

Details Degradable non-woven fabric and preparation process thereof Degradable non-woven fabric and preparation process thereof

1993-11-04

1995-08-01

Krass, Frederick

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

428227, 428229, 428255, 428287, 428288, 428480, 264103, 264257, 264258, 264319, 26433121, 264546, B32B 102, B32B 108, B32B 110, B32B 2702

Patent

active

054379180

ABSTRACT:
A degradable non-woven fabric obtained from an web formed of lactic acid-based polymer filaments comprising of one or more lactic acid-based polymers selected from a poly (DL-lactic acid) having more than 80 mol % of L-lactic acid units, poly (DL-lactic acid) having more than 80 mol % of D-lactic acid units, L-lactic acid/hydroxycarboxylic acid copolymer having 70 mol % or more of L-lactic acid units, and D-lactic acid/hydroxycarboxylic acid copolymer having 70 mol % or more of D-lactic acid units, and a preparation process of the degradable non-woven fabric which has good dimensional stability and can be degraded and disappeared under natural environment when abandoned.

REFERENCES:
patent: 4045418 (1977-08-01), Sinclair
patent: 5294469 (1994-03-01), Suzuki et al.
Derwent Abstracts 93-102698: "Soft Biodegradable Nonwovens", Esaki et al.
Derwent Abstracts 91-354911: "Nonwoven Fabric Composite for Hygiene Articles", Utz et al.

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