PRODUCTION METHOD FOR POLY (AMIDE-IMIDE) FILM AND POLY (AMIDE-IMIDE) FILM PRODUCED THEREBY

摘要

The present invention relates to a production method of a poly (amide-imide) film capable of producing the poly (amide-imide) film having excellent optical and mechanical properties and a poly (amide-imide) film produced by the production method. The production method of the poly (amide-imide) film comprises the steps of: producing a polymer solution; moving the polymer solution into a tank; purging the same with inert gas; producing a gel-sheet; producing a cured film; cooling the cured film while moving the same; and winding the cooled cured film using a winder.;COPYRIGHT KIPO 2019