MANUFACTURING APPARATUS FOR MULTILAYER, BIAXIALY STRETCHED FILM OF MULTIFORM, FUNCTIONAL THERMOPLASTIC RESIN

摘要

PURPOSE:To make possible economical supply of multilayer stretched film provided with special functions, etc. individually required, desired, by arranging a water absorbing processor, a longitudinal unaxial front stretcher and a coating device with a drier between a multilayer film coextrusion film forming machine and a tenter type biaxial synchronous biaxial stretcher. CONSTITUTION:The film-coextrusion film forming machine X composed of three extruders and a multimanifold three layer T die and a cooling roll, the tenter synchronous biaxial stretcher Y, the water-absorbing processor A of a roll guide type hot water disposer installed between two machines X and Y, the hot roll type longitudinal uniaxial front stretcher of variable stretching device B and the coating device C composed of a reverse roll coater and an arch hot air drier are arranged and installed in this apparatus. By changing forming material for the film a carrying path of the film is changed by the film carrying member Z, the working method for the film is selected, various multilayer stretched film are obtained.