| 摘要 |
PURPOSE: To mold multilayer films simultaneously and precisely even when the thickness of the layers and the viscosity values of dope are different remarkably by molding a polymer film having two or more layers. CONSTITUTION: A substrate is made to move continuously in the downstream direction shown by an arrow 1. The substrate 12 can be made to be a polished metal belt or drum or a polymer belt. In the substrate 12, a film in which a liquid synthetic material for molding or dope were molded simultaneously is peeled of after the evaporation of a volatile solvent, and a surface to be wound as a roll 21 is obtained. In this way, two or more layers can be molded precisely and simultaneously to be uniform in thickness. |
