Stretch-thinned breathable films resistant to blood and...

Details Stretch-thinned breathable films resistant to blood and... Stretch-thinned breathable films resistant to blood and...

C - Chemistry, Metallurgy

08

L

C08L 23/14 (2006.01) C08J 5/18 (2006.01) C08L 23/12 (2006.01)

Patent

CA 2274710

A stretch-thinned polymeric film is formed from a mixture of a polymer matrix including a low crystallinity propylene polymer having not more than about 30 % crystallinity, with a particulate filler. The stretch-thinned film is breathable to water vapor yet resistant to penetration by liquids and viruses. The film can be laminated to a nonwoven web, and is useful in a wide variety of medical apparel and related products.

L'invention concerne un film polymère aminci par étirage, formé à partir d'un mélange d'une matrice de polymère comportant un polymère de propylène à faible cristallinité dont la cristallinité n'est pas supérieure à 30 %, et d'une matière de charge particulaire. Le film aminci par étirage est perméable à la vapeur d'eau, tout en étant résistant à la pénétration de liquides et de virus. Ce film est susceptible d'être laminé et de se présenter sous forme de voile non tissé, et est utile dans une large gamme d'appareils médicaux et de produits associés.

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