TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The multilayer film further comprises at least one binder layer to adhere CB layer to the CA layer, encapsulating and/or adhering CA layer to the CB layer. The PA-A is PA-6 (preferred), PA-8, PA-6.6, PA-4.6, PA-6.10, copolyamide-6.T/6.6, copolyamide 6.I/6.6 and/or copolyamide 6.T/6.I/6.6, where I is isophthalic diacids and T is terephthalic acid. The PA-B is PA-8, PA-9, PA-11, PA-12 (preferred), PA-6.10, PA- 10.10, PA-10.12, PA-6.12, PA-6.14, PA-6.18, copolyamide 12/10.T, copolyamide 11/10.T, polyamide-12.T, where the PA has an average number of 11-15C per nitrogen atom. The adhesive CA layer further comprises PA-A1 and optionally PA-A2, where PA-A1 has an average number of 7-10C per nitrogen atom, which is greater than PA-A, and PA-A2 has an average number of 9-18C per nitrogen, which is greater than PA-A1. The CB layer further comprises PA-B1 and PA-B2, in which each has an average number of 4-8.5C and 7-10C per nitrogen atom, respectively, where both PA-B1 and PA-B2 are less then B. The binder comprises one or more copolyamides comprising at least 25 wt.% of at least one monomer having an average number of 4-6C per nitrogen atom and/or at least 25 wt.% of at least one comonomer having an average number of 9-18C per nitrogen; one or more homopolyamide having a structure of formula (PA-X1.Y1) comprising at least 25 wt.% of diamine units and at least 25 wt.% of diacid units; a mixture of polyamides, preferably PA-6, PA-6.12 or PA-12; at least one functionalized polyolefin and a mixture of partially or wholly polyamide and functionalized polyolefin. The CA and/or CB layers further comprise at least one impact modifier comprising functionalized polyolefins. The functionalized polyolefin comprises: a copolymer of at least one alpha -olefin such as ethylene or propylene; at least one comonomer having a reactive function comprising carboxylic acid such as (meth)acrylic acid, carboxylic anhydride such as maleic anhydride or epoxide such as glycidyl methacrylate, and optionally at least one comonomer not having a reactive function comprising different alpha -olefin; diene such as butadiene; an unsaturated carboxylic acid ester such as alkyl methacrylate, where the alkyl group is methyl, ethyl or butyl; and carboxylic acid vinyl ester such as vinyl acetate. The film has three-layer structure consisted of a CA layer covered with CB layer.X1 = 4-6; andY1 = 8-18.