Multi-layer film

摘要

The invention relates to a multi-layer film comprising a layer (A) made of a polyamide (a), a layer (B) made of a mixed polyamide (b3) of a polyamide (b1) and an aliphatic polyamide (b2), a layer (C) made of an adhesive polyolefin (c1) or a mixed resin (c3) of an adhesive polyolefin (c1) and a polyolefin (c2), and a layer (D) made of a polyolefin (d), wherein the layer constitution is such that the layers are arranged in order of the layer (A)/the layer (B)/the layer (C)/the layer (D), and the layer (B) is made of a mixed polyamide (b3) made up of 60 to 95% by weight of a polyamide (b1) obtained from a diamine comprising 70 mol % or more of meta-xylylenediamine and a dicarboxyic acid comprising 70 mol % or more of an alpha , omega -aliphatic dicarboxylic acid having 6 to 12 carbon atoms and 40 to 5% by weight of an aliphatic polyamide (b2) having a semicrystallization time of 30 sec or less at 160 DEG C. and a solubility parameter (SP value) of 13+/-1.5.