Multilayer films having improved inter-layer adhesion

Details Multilayer films having improved inter-layer adhesion Multilayer films having improved inter-layer adhesion

B - Operations, Transporting

32

B

B32B 27/32 (2006.01)

Patent

CA 2202942

A multilayer film generally includes: a) a first, exterior layer comprising a polypropylene homopolymer or copolymer; and b) a second layer in adherence with the first layer, the second layer comprising a homogeneous ethylene/alpha-olefin copolymer having a density of less than or equal to 0.92 grams per cubic centimeter. Such multilayer film is advantageously used in various food-packaging applications because of its excellent heat-sealability as well as flex-crack and pin-hole resistance.

Une pellicule multicouche comprend généralement : a) une première couche externe comprenant un homopolymère ou un copolymère de polypropylène; et b) une seconde couche qui adhère à la première, la seconde couche comprenant un copolymère homogène d'éthylène/alpha-oléfine ayant une masse volumique inférieure ou égale à 0,92 grammes par centimètre cube. Cette pellicule multicouche est avantageusement utilisée dans diverses applications dans le domaine de l'emballage des aliments en raison de son excellente thermoscellabilité et de sa résistance aux craquelures par flexion et aux piqûres.

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