Patent ID: 7645488
Filing Date: 2010-01-12
Classification: B05D

Abstract:
1. Method for production of weather- and corrosion-resistant formed metal parts of aluminum or an aluminum alloy with decorative surface using a coil coating process, comprising the steps of: (a) providing a strip of aluminium or an aluminium alloy, (b) optionally continuous degreasing of the strip, (c) optionally electrochemical, chemical or mechanical polishing of the degreased strip, (d) continuous pre-treatment of the optionally degreased and/or polished strip to produce a pre-treatment coating which is suitable as an adhesion base for a lacquer coating, (e) continuous lacquering of the pretreated strip with a sol-gel lacquer of polysiloxane to generate a first protective coating (f) continuous drying and hardening of the first protective coating in a belt oven, (g) forming metal parts from the strip by (h) lacquering the formed metal parts with a further sol-gel lacquer of a polysiloxane to generate a second protective coating, and (i) drying and hardening of the second protective coating in an oven.