Abstract: Composite doors are described which include a frame defining at least two openings and at least two composite panels situated within the openings in the frame. Preferred uses for such composite doors are as plug doors for use on railcars.

Abstract: Described herein is a process for manufacturing a part or a part pre-form, for example, a vehicle part or vehicle part pre-form, as well as articles of manufacture incorporating pre-stretched paint films and substrates such as extruded sheet. Also described herein is an apparatus useful for the process described, which process includes providing a paint film having a length as measured along a longitudinal axis of the paint film; continuously stretching the paint film in the transverse and/or longitudinal directions of the film over the length of the paint film to form a pre-stretched paint film; and applying the pre-stretched paint film to a thermoformable substrate to form a part or part pre-form.