| abstract |
A multilayer asymmetric heat shrinkable film consisting of the following layers: - an outer sealing layer; - an adhesion layer; - an internal barrier layer comprising EVOH sandwiched between two polyamide layers; - an adhesion layer and - an external surface layer comprising at least 50% by weight of a mixture of between 90% and 60% by weight of at least one polyamide and between 10% and 40% by weight of at least one polyester , wherein said polyamide has a melting temperature greater than 170 °C and wherein said polyamide is selected from the group consisting of polyamides 6/12, copolyamides of polyamide 6 and a partially aromatic polyamide and polyamide-based ternary copolyamides 6, polyamide 11, polyamide 66, or mixtures thereof, preferably from the group consisting of polyamide 6, polyamide 6 copolymers comprising less than 5% of an aromatic comonomer (modified polyamide 6), polyamide 66, polyamides 6/66, polyamides 6/12 or mixtures thereof. |