Fibers comprising polyhydroxyalkanoate copolymer/polylactic...

Details Fibers comprising polyhydroxyalkanoate copolymer/polylactic... Fibers comprising polyhydroxyalkanoate copolymer/polylactic...

D - Textiles, Paper

01

F

D01F 6/92 (2006.01) C08L 67/04 (2006.01) D01F 8/14 (2006.01) D04H 1/42 (2006.01)

Patent

CA 2440545

Environmentally degradable melt spun fibers comprising a polyhydroxyalkanoate copolymer and a polylactic acid polymer or copolymer are disclosed. A preferred configuration of the present invention is directed to environmentally degradable fibers comprising a sheath/core structure where the core comprises a biodegradable polyhydroxyalkanoate copolymer and the sheath comprises a polymer or copolymer of polylactic acid. Nonwoven webs and disposable articles comprising the environmentally degradable fibers are also disclosed.

L'invention porte sur des fibres filées à chaud dégradables dans l'environnement comprenant un copolymère de polyhydroxyalkanoate, et un polymère ou copolymère d'acide polylactique. Dans leur configuration préférée, lesdites fibres présentent une structure gaine/coeur, la gaine étant faite du copolymère dégradable de polyhydroxyalkanoate, et le coeur du polymère ou copolymère d'acide polylactique. L'invention porte également sur des nappes non tissées, et sur des articles à jeter comprenant les susdites fibres.

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