| 摘要 |
PURPOSE:To obtain the title film having few pinholes and excellent moistureproofness by compression-molding polychlorotrifluoroethylene into a block, cutting this block into a film, heating this film to a specified temperature to increase its crystallinity. CONSTITUTION:Polychlorotrifluoroethylene is compression-molded into a block, which is cut into a film and then heated to a temperature higher than the melting point of the polychlorotrifluoroethylene to increase its crystallinity. |
