HIGH FREQUENCY SEALABLE LAMINATE AND PRODUCTION THEREOF

PURPOSE:To obtain a three-layered laminate having high frequency sealing characteristics and excellent in flexibility and strength. CONSTITUTION:A three-layered laminate is constituted of an intermediate layer composed of a styrenic thermoplastic elastomer (1) and other two layers adjacent to the intermediate layer and composed of a multi-unit copolymer (2) consisting of ethylene, radical polymerizable acid anhydride and radical polymerizable comonomer other than the acid anhydride, that is, an ethylenic copolymer consisting of 50-90wt.% of a unit resulting from ethylene (a), 0.1-5wt.% of a unit resulting from radical polymerizable acid anhydride (b) and 10-50wt.% of a unit resulting from other radical polymerizable comonomer (c). This laminate is produced by co-extrusion molding.