MANUFACTURE OF HIGH RIGIDITY FILM

摘要

PROBLEM TO BE SOLVED: To solve a difficulty of stably passing a partly baked film containing a solvent through a heating furnace due to brittleness of a polymer film regarding steps of manufacturing the polymer film formed by passing the baked film via the furnace by fixing both ends of the baked film and heating it. SOLUTION: In the method for manufacturing a polymer film having Tg of 200 deg.C or higher and a tensile modulus of 300 kg/mm<2> or more comprising the steps of forming a solution of the polymer or a precursor solution of the polymer in a film-like state, fixing its both ends to a continuously feeding pin sheet or chuck to heat it at the stage of incorporating self-supporting properties therein; a part fixed to the pin sheet or the chuck is protected so as to be scarcely heated.