Heat sealable films

Details Heat sealable films Heat sealable films

C - Chemistry, Metallurgy

08

L

C08L 23/16 (2006.01) B32B 27/32 (2006.01) C08J 5/18 (2006.01) C08K 5/20 (2006.01) C08L 23/08 (2006.01) C08L 23/10 (2006.01)

Patent

CA 2279537

This invention relates to a film comprising: (i) a first surface layer comprising a homopolymer of ethylene having an Mw/Mn of 3 or less or a copolymer of ethylene and up to 50 weight % of a C3 to C20 alpha- olefin and CDBI of 50 % or more, and (ii) a second surface layer comprising a homopolymer of propylene or copolymer of propylene and up to 50 % of a comonomer.

Films thermosoudables La présente invention concerne un film formé: (i) d'une première couche de surface comprenant un homopolymère d'éthylène possédant un rapport Mw/Mn inférieur ou égal à 3 ou un copolymère d'éthylène, et 50 % en poids ou moins d'une alpha-oléfine en C3 à C20, et un indice de largeur de répartition de la composition (CDBI) supérieur ou égal à 50 %; et (ii) d'une deuxième couche de surface comprenant un homopolymère de propylène ou un copolymère de propylène et 50 % ou moins d'un comonomère.

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