Multilayer thermoshrinkable films

B - Operations – Transporting – 32 – B

Patent

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B32B 27/32 (2006.01) C08L 23/08 (2006.01) C08L 23/14 (2006.01)

Patent

CA 2212852

Multilayer thermoshrinkable films in which at least one layer (a) is based on a polyolefin composition comprising a propylene copolymer and having particular crystallinity characteristics, and at least one layer (b) comprising a linear copolymer of ethylene with one or more .alpha.-olefins (LLDPE). The films are characterized by an optimum balance of physicomechanical properties, processability and lap seal strength at low temperatures.

L'invention concerne des films thermorétrécissables multicouches à au moins une couche (a) basée sur une composition polyoléfiniques contenant un copolymère du propylène et ayant des caractéristiques particulières de cristallinité et au moins une couche (b), comprenant un copolymère linéaire de l'éthylène avec une ou plusieurs alpha -oléfines. Les films sont caractérisés par un équilibre optimum entre les propriétés physicochimiques, d'aptitude à la transformation et de résistance à la déchirure à basse température.

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