Plating e.g. clamp of brake in vehicle, comprises applying first varnish layer made of polyurethane resin and curing agent on metal element, bonding metal foil on varnish layer, and applying second varnish layer to free face of metal foil

摘要

The method comprises applying a first varnish layer (2a) comprising polyurethane resin and curing agent on a first metal element (1), bonding a metal foil on the varnish layer, and applying a second varnish layer (2b) to a free face of the metal foil. The application of the first varnish layer is preceded by surface treatment of the sheet with a needle gun. The varnish has a viscosity of 300-500 mPa.seconds at 25[deg] C. The weight ratio of polyurethane resin and curing agent is 1.30:1-1.35:1. The metal foil has a thickness of 0.001-2 mm. An independent claim is included for a metal element covered with plating.