| 摘要 |
PROBLEM TO BE SOLVED: To stably manufacture a high rigidity film while effectively preventing the cracking etc. , of the film during manufacture without spoiling its original properties as a polymer film. SOLUTION: In a method for manufacturing the high rigidity film having a Tg of at least 200°C and a tensile modulus of elasticity of at least 300 kg/mm<SP>2</SP>, a solution of the polymer of the film or the precursor of the polymer is molded into a film. When the film can stand by itself, both ends of the film are fixed to a pin seat or a chuck traveling continuously to be conveyed in a heating furnace. Both ends of the film, which are fixed to the pin seat or the chuck, are heated to a temperature higher than the temperatures of other parts of the film being heated in the furnace. COPYRIGHT: (C)2007,JPO&INPIT |
