SURFACE REPAIRING METHOD FOR CORONA TREATMENT ROLL IN FILM MANUFACTURING APPARATUS

摘要

PROBLEM TO BE SOLVED: To efficiently repair a corona treatment roll in a film manufacturing apparatus without stopping the film manufacturing apparatus for a long time. SOLUTION: When the surface of the corona treatment roll 7 wherein a rubber layer 12 is formed on the surface of a metal roll 11 is repaired in the film manufacturing apparatus for molding a thermoplastic polymeric compound into a film, the dent 15 generated in the surface of the rubber layer 12 is filled with a caulking agent in such a stage that the dent 15 does not exceed a definite depth.