| 摘要 |
<p>PROBLEM TO BE SOLVED: To manufacture a polymer film which scarcely fibrillates and has a wear resistance at a low cost by adhering at least one surface of the film for forming a molten phase of an optical anisotropy to a support, melt heat treating it at a melting point or higher of the polymer, and then heat treating the film at the melting point or lower. SOLUTION: A liquid crystal polymer preferably has a transition temperature of particularly an optical anisotropic molten phase of 250 to 350 deg.C. It is preferable to form a film from a die at a temperature higher by 10 deg.C or higher than a flow starting temperature of the polymer to become a shearing speed of 500 sec<-1> or more. The polymer film is used by heat press bonding a material to be covered such as a metal, foil, a glass or the like. In the case of heat treating the liquid crystal polymer film, a melt heat treatment at a melting point or higher of the polymer and a heat treatment at a melting point of higher of the polymer continued thereto are combined. Thus, physical properties of the object film of a low cost pre obtained.</p> |
