METHOD FOR PRODUCING COLOURED PRODUCTS PARTICULARLY FOR FORMING STRUCTURAL ELEMENT APPLIED IN THE BODY OF MOTOR VEHICLE, HEAT-FORMABLE LAMINATE FOR FORMING THE PART OF EXTERNAL BODY EXPOSED TO ENVIRONMENTAL EFFECTS, PLASTIC ELEMENT AND STRUCTURAL ELEMENT FOR PRODUCING EXTERNAL PIECE IN THE BODY OF MOTOR VEHICLE EXPOSED TO ENVIRONMENTAL EFFECTS

摘要

A high gloss exterior automotive quality paint coat having exterior automotive appearance and durability properties is laminated to the exterior surface of a molded plastic car body member or panel. In one embodiment, the paint coat includes an exterior clear coat (45) above a color coat (46). The clear coat (45) and color coat (46) are each coated on a temporary flexible casting sheet and dried. A high gloss surface is transferred to the clear coat from the casting sheet. The paint coat is then transferred from the casting sheet to a thin, semi-flexible thermoformable plastic backing sheet (72) by dry paint transfer-laminating techniques. The resulting laminate (130) is thermoformed into a complex three-dimensional shape of the car body member or panel. The preformed laminate is then bonded to an underlying plastic substrate material, by injection-cladding techniques, for example, to form the finished article. The paint coat has sufficient elongation to retain exterior automotive appearance and durability properties during thermoforming without deglossing. The color coat has sufficient pigment to maintain required coloration without disrupting the other properties of the paint coat during the thermoforming step. The backing sheet absorbs defects in the substrate material so the paint coat retains its appearance and durability properties during the injection-cladding step. The finished article comprises a high gloss, defect-free paint coat on the exterior of a molded plastic car body member or panel. Solution-form PVDF/acrylic paint systems have remarkably high combined gloss and distinctiveness-of-image levels.