FLAME RETARDANT POLYESTER FILM HAVING EXCELLENT FLAME RETARDANCY AND PROCESSED PRODUCT INCLUDING THE SAME

摘要

PURPOSE: Provided are a flame-retardant polyester film having an excellent flame retardancy, and adhesive tapes, flexible printed circuits, a membrane switch, a film heater, and a flat cable, each including the flame-retardant polyester film. CONSTITUTION: The flame-retardant polyester film comprises resin layers laminated on both surfaces of a polyester film, wherein the resin layer satisfies the following mathematical Formula (15<=(Wc1-Wc2)/Wc0x100<=99), and has a non-flammable gas generating rate of 3 to 40 % at the temperature range of 180 deg.C to 450 deg.C; (Wc1-Wc2)/Wc0x100 is not less than 15 and not more than 99(where Wc0 represents the weight of the resin layer at 25 deg.C in air, Wc1 represents the weight of the resin layer after the temperature thereof is raised from 25 deg.C to 600 deg.C in air, and Wc2 represents the weight of the resin layer after the temperature thereof is raised from 25 deg. C to 800 deg.C in air).