PURPOSE: To provide a technique obtaining a laminated film of resin consisting basically of a thermoplastic polyurethane elastomer and EPDM-EVA composition film, which is a thin film and capable of performing a large quantity of winding-up without performing blocking.
CONSTITUTION: A polyurethane elastomer laminated film which is obtained by performing film making of a composition (B) containing a 40-70wt.% ethylene-diene copolymer (a) and 30-60wt.% ethylene-vinyl acetate copolymer (b) which has content of vinyl acetate of at least 10wt.% and melt index (MI) of 0.2-25g/10 minutes and a thermoplastic polyurethane elastomer (A) by an air-cooled coextrusion inflation method by making the (A) and (B) respectively into an inner layer side and outer layer side and having a thickness of 10-250μm and its manufacture.
NAGAKI TSUGUNARI
YOSHIKAWA MASAHIKO
YAMAGUCHI SOICHIRO
