POLYCHLOROTRIFLUOROETHYLENE FILM AND PRODUCTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a production method of a PCTFE film having excellent moisture-proofness, good tensile elongation and excellent moldability.SOLUTION: A production method of a polychlorotrifluoroethylene film includes: a step (1) of melting polychlorotrifluoroethylene and molding into a film; a step (2) of holding the molded film at 100-170°C; and a step (3) of cooling the held film to room temperature. The temperature of the film does not turn 170°C or lower until the step (2) is started, after the step (1).