Patent ID: 6468597
Filing Date: 2002-10-22
Classification: B05D

Abstract:
Method for producing a plastic film or a plastics-containing film on a metal surface of a substrate by wetting said surface with a treatment liquid, in which said treatment liquid, which immediately prior to wetting said surface contains 0.1 to 50% by weight of a non-volatile film-forming mixture containing one or more resins, said resins containing neutralized groups, whereby neutralization occurs due to the presence of one or more neutralizing agents contained in said treatment liquid having pH values in the 7-9.5 range, and 99.9 to 50% by weight of a water miscible and/or water-soluble solvent and/or water, forms a film on said metal surface, with any present volatile component in said liquid evaporating at least in part, wherein immediately prior to wetting said substrate said treatment liquid has a temperature in the range of 10 to 100Â° C., and said metal surface has a temperature higher than the treatment liquid by at least 20Â° C. and a temperature in the region of 30 to 700Â° C., and in that the film is used for treating the metal surface.