Dry paint transfer process and product
View Patent ↗An automotive quality paint coat ( 44 ) is laminated to the exterior surface of a molded plastic car body member or panel ( 118 ). In one embodiment, the paint coat ( 44 ) includes an exterior clear coat ( 45 ) above a color coat ( 46 ). During processing, the clear coat ( 45 ) and color coat ( 46 ) are each coated on a temporary flexible casting sheet ( 42 ) and dried. A high gloss surface is transferred to the clear coat ( 45 ) from the casting sheet ( 42 ). The paint coat ( 44 ) is then transferred from the casting sheet ( 42 ) to a thin, semi-flexible thermoformable plastic backing sheet ( 72 ) by dry paint transfer-laminating techniques. The resulting laminate ( 70 ) is thermoformed into a complex three-dimensional shape of the car body member or panel. The preformed laminate ( 116 ) is then bonded to an underlying plastic substrate material, by injection-cladding techniques, for example, to form the finished article. The paint coat ( 44 ) has sufficient elongation to retain exterior automotive appearance and durability properties during thermoforming without deglossing. The backing sheet ( 72 ) 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 polyvinylidene fluoride/acrylic paint systems have remarkably high combined gloss and distinctiveness-of-image levels, together with durability properties required for exterior automotive use.
1. A shaped article having a contoured decorative outer surface, comprising a supporting plastic substrate and a decorative sheet material adhered to one side of said substrate and conforming to said contoured surface, said decorative sheet material having a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth outer surface with a distinctiveness-of-image value of 65 or greater and formed of a flexible, optically clear weatherable polymer comprising from about 50% to about 70% of polyvinylidene fluoride solids and from about 30% to about 50% of an acrylic resin, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer formed of a flexible polymer with pigments distributed therein.
2. A flexible decorative sheet material suitable for use in surfacing automobile body panels, said sheet material having the appearance of a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth, glossy outer surface with a distinctiveness-of-image value of 65 or greater, and formed of a flexible, optically clear, weatherable polymer comprising from about 30% to about 50% of an acrylic resin and from about 50% to about 70% of polyvinylidene fluoride solids, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer and visible through said outer layer.
3. A shaped article having a contoured decorative outer surface, comprising a supporting plastic substrate and a decorative sheet material adhered to one side of said substrate and conforming to said contoured surface, said decorative sheet material having a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth outer surface with a distinctiveness-of-image value of 60 or greater and formed of a flexible, optically clear weatherable polymer comprising from about 50% to about 70% of polyvinylidene fluoride solids and from about 30% to about 50% of an acrylic resin, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer formed of a flexible polymer with pigments distributed therein.
4. A flexible decorative sheet material suitable for use in surfacing automobile body panels, said sheet material having the appearance of a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth, glossy outer surface with a distinctiveness-of-image value of 60 or greater, and formed of a flexible, optically clear, weatherable polymer comprising from about 30% to about 50% of an acrylic resin and from about 50% to about 70% of polyvinylidene fluoride solids, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer and visible through said outer layer.
5. A shaped article having a contoured decorative outer surface, comprising a supporting plastic substrate and a decorative sheet material adhered to one side of said substrate and conforming to said contoured surface, said decorative sheet material having a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth outer surface with a distinctiveness-of-image value of 82 or greater and formed of a flexible, optically clear weatherable polymer comprising from about 50% to about 70% of polyvinylidene fluoride solids and from about 30% to about 50% of an acrylic resin, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer formed of a flexible polymer with pigments distributed therein.
6. A flexible decorative sheet material suitable for use in surfacing automobile body panels, said sheet material having the appearance of a glossy, base coat/clear coat automotive paint finish, and comprising:
(i) a flexible outer layer having a smooth, glossy outer surface with a distinctiveness-of-image value of 82 or greater, and formed of a flexible, optically clear, weatherable polymer comprising from about 30% to about 50% of an acrylic resin and from about 50% to about 70% of polyvinylidene fluoride solids, and
(ii) a pigmented coating adhered to the opposite surface of said outer layer and visible through said outer layer.