Patent ID: 8349424

Claim:
A multilayer, biaxially stretched tubular film comprising: A) a first outer layer A based on polyethylene having a layer thickness of 1 to 15 μm, B) an inner layer B made in a multilayer manner, comprising aliphatic and/or partially aromatic polyamide(s) and/or copolyamide(s) or mixtures thereof having a layer thickness of 3 to 30 μm, C) an inner layer C based on polyolefin having a layer thickness of 1 to 15 μm, and D) a second outer layer D having a layer thickness of 3 to 20 μm, comprising either aliphatic and/or partially aromatic polyamide(s), and/or copolyamide(s), or mixtures thereof, wherein, in use, the first outer layer A is configured to be oriented outside, and the second outer layer D is configured to be oriented inside.