Multilayer film comprising an amorphous polymer

Details Multilayer film comprising an amorphous polymer Multilayer film comprising an amorphous polymer

B - Operations, Transporting

32

B

B32B 27/34 (2006.01) B32B 7/02 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2493387

A multilayer film includes a first layer comprising an amorphous polymer that exhibits a glass transition temperature, and a second layer forming an exterior layer of the multilayer film and comprising a sealant material capable of forming a heat-seal, the sealant material comprising a polymer that exhibits a melting point. The glass transition temperature of the amorphous polymer is greater than the melting point of the sealant material by at least about 45 degrees centigrade.

L'invention concerne un film à couches multiples comprenant une première couche contenant un polymère amorphe qui présente une température de transition vitreuse, et une seconde couche formant une couche externe du film à couches multiples et comprenant un matériau d'étanchéité capable de former un thermo-scellage, le matériau d'étanchéité contenant un polymère qui présente un point de fusion. La température de transition vitreuse du polymère amorphe est supérieure au point de fusion du matériau d'étanchéité d'au moins 45 ·C environ.

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