Flame retardant polyester film and processed product including the same

A flame-retardant polyester film comprising resin layers laminated on both surfaces of a polyester film, wherein each of the resin layers satisfies the following Formula (1) and has non-flammable gas generating rate of 3 to 40 percent over the range of 180° C. to 450° C.:

• 15≦(Wc1−Wc2)/Wc0×100≦99 (1)
• where Wc0 represents the weight of the resin layer at 25° C. in air, Wc1 represents the weight of the resin layer after the temperature thereof is raised from 25° C. to 600° C. in air, and Wc2 represents the weight of each of the resin layers after the temperature thereof is raised from 25° C. to 800° C. in air;
• and
• each of the resin layers comprises polyimide and 30 to 65 percent by weight aluminum hydroxide based on weight of the resin layer;
• and wherein 70 to 100 percent of the total structural units of the polyimide are structural units represented by the following Formula (III);
• in Formula (III), R′ represents at least one group selected from groups represented by the following Formula (IV);
• in Formula (IV), Y represents at least one group selected from the groups represented by the following Formula (V);
• —O—, —CH2—, —CO—, —SO2—, —S—, —C(CH3)2— (V).