/ Polyester/Polyimide Hybrid Films with Good Adhesion and Preparing Method Thereof

摘要

The present invention relates to a polyester / polyimide-based composite film having excellent heat resistance and adhesiveness, and a method of manufacturing the same, which is particularly excellent in heat resistance while maintaining almost the properties of the existing polyester resin, and thus can be used as a transparent heat resistant material. It relates to a polyester / polyimide composite film in the form.;In the present invention, by coating a thin film of an aliphatic ring-soluble polyimide resin mixture in which 5 to 95 mol% of polyamic acid is introduced on the polyester film to improve the adhesion of the film interface, the novel solubility excellent in heat resistance, adhesion and mechanical properties The polyester composite film prepared and manufactured of the polyimide / polyester composite film can be used at a high temperature of 230 ° C or higher.