Patent ID: 8357455

Claim:
A single layer or multi-layer film comprising a first composition which comprises at least 95% by weight of a copolyamide having a melt viscosity of from 250 to 10,000 Pas, which is obtained by polymerizing a monomer composition consisting essentially of: a) from 65 to 99 mol % of a substantially equimolar mixture comprising an unbranched aliphatic diamine having from 6 to 18 carbon atoms and an unbranched aliphatic dicarboxylic acid having from 6 to 18 carbon atoms, where said mixture comprises an average of from 8 to 12 carbon atoms per monomer, and b) from 1 to 35 mol % of a substantially equimolar mixture comprising a cycloaliphatic diamine having from 8 to 20 carbon atoms and of a non-aromatic dicarboxylic acid having from 6 to 18 carbon atoms, wherein all of the dicarboxylic acids in (b) are non-aromatic.