Abstract: A metalized polyester film for application to a substrate to be used as a trim component for automobiles and the like. The film is comprised of a thermally stable extensible polyester carrier for supporting multiple layers of metallic and thermoplastic coatings. Prior to application of a metallic coating, the film is cleaned by means of exposure to an inert gas such as argon in order to remove moisture and other impurities. A layer of aluminum or other metal is then deposited on the carrier film thereby forming a superior bond with the cleaned surface. A tie coat primer is applied over the aluminum which is followed by an adhesive. The metalized film is adhesively applied to a formable substrate which is configured into an end component part by means of vacuum forming or pressure forming. The formed laminated substrate is next attached to a piece of support plastic, wherein the composite part can be applied as trim. A protective lacquer coat is applied to the polyester film as a final step.