MANUFACTURE OF MULTILAYER COEXTRUDING INFLATION FILM

摘要

PURPOSE:To provide a manufacturing method of good film manufacturing properties and without sagging and the like when a multilayer inflation film composed of thermoplastic polyurethane resin and polypropylene resin suitable for the secondary processing is coextruded, for which resistance to heat is required. CONSTITUTION:In the process of manufacturing a multilayer film composed of a thermoplastic polyurethane resin layer (A) and a polypropylene resin layer (B) by means of the coextruding inflation process, the polypropylene resin layer (B) is composed of polypropylene (95-60wt.%) and styrene elastomer with hydrogen added therein (5-40wt.%).