Folienverbund

Es wird ein Folienverbund (1) vorgeschlagen, der aus einer transparenten Traegerfolie (2), auf der eine Effektschicht (3) und nachfolgend eine metallische Schmelzschicht (4) aufgebracht ist, besteht.

DE 19834734 A UPAB: 20000330 NOVELTY - The composite comprises a transparent substrate (2) with a sheet for decorative effect (3) and a layer of metallic melt which is coated-on. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the method of manufacture. The composite is formed by coating the transparent substrate with the effect layer (3), then the melt layer (4). This is carried out in a vacuum chamber at 10-4 - 1 bar and 20 deg. C -200 deg. C, being the maximum temperature at which the sheet is used. Preferred features: The melt layer is a metal or metal alloy with a melting point close to the softly-resilient, thermally-deformable temperature range of the substrate plastic. Sheet thickness is 50-500 nm. The effect layer, a succession of transparent dielectric sheets and part-transparent metallic layers, forms interference layers in the composite. In a further variant, it comprises two transparent layers with intervening part-transparent metallic layer. The latter is a metal oxide and is 10-1000 nm thick. Effect layer and melt layer comprise the same material, forming a unity (3, 4). The sheet is hot-pressed onto surfaces to be coated. Radiative heating or glow discharge is employed to perform the application, in a vacuum chamber. Before application, the surfaces to be joined are made extremely clean by glow discharge in an inert gas. Composite sheet manufacture and application to a surface take place in the same vacuum chamber, without intermediate cooling. Application of the melt layer, and metal coating of the component surface take place simultaneously, using the same metal and in the same vacuum chamber. A stamp complementary in shape to the surface being coated, applies the intervening sheet composite. USE - To cover component surfaces, which may include surfaces to be made reflective, to be painted or to be given interference effects. Surfaces may be metallic or non-metallic, on e.g. a reflector, lamp or vehicle. (All preceding, are claimed uses). ADVANTAGE - The method is considered low cost, and environmentally -friendly. High quality results. It is carried out rapidly in comparison to e.g. metallic deposition and subsequent lacquering to make a reflector. No drying time is involved. The result is e.g. reflective, gleaming, colored or shows interference effects. Thickness is uniform and curved surfaces can be coated. Further valuable features include toughness, closed surface, mechanical and chemical resistance. Surface elasticity improves greatly on clear lacquers.