Polypropylene blends for non-woven fabrics

Details Polypropylene blends for non-woven fabrics Polypropylene blends for non-woven fabrics

C - Chemistry, Metallurgy

08

L

C08L 23/12 (2006.01) B32B 5/26 (2006.01) C08L 23/14 (2006.01) D04H 3/00 (2006.01) D04H 3/16 (2006.01)

Patent

CA 2563984

The present invention provides polypropylene blends for use in the production fibers and fabrics. The polypropylene blends according to the current invention comprise from about 85 to about 95 percent by weight of a propylene homopolymer and from about 5 to about 15 percent by weight of an ethylene/propylene random copolymer having an ethylene content of about 7 percent by weight or less. The overall ethylene content of the blends according to the present invention is about 1 percent by weight or less. Polypropylene blends according to the current invention provide lower bonding temperatures and wider bonding windows without the increased smoke generation associated with high solubles homopolymers.

La présente invention concerne des mélanges de polypropylène destinés à être utilisés dans la production de fibres et de textiles. Les mélanges de polypropylène selon la présente invention comprennent entre environ 85 et environ 95 % en poids d'un homopolymère de propylène et entre environ 5 et environ 15 % en poids d'un copolymère aléatoire d'éthylène/propylène dont la teneur maximale en éthylène est d'environ 7 % en poids. La teneur globale en éthylène des mélanges selon l'invention est au maximum d'environ 1 % en poids. Les mélanges de polypropylène selon l'invention assurent des températures de liaison inférieures et des fenêtres de liaison plus étendues sans générer la fumée plus importante associée aux homopolymères hautement solubles.

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