Patent ID: 7399397

Claim:
A process for the production of coated substrates comprising the successive steps of: a) applying a coating composition A′ onto one side A″ of a metal sheet to form a coating layer A which is electrically insulating when cured and applying a coating composition B′ onto the opposite side B″ of the metal sheet to form a coating layer B which is electrically conductive when cured, wherein coating compositions A′ and B′ are each applied by coil coating, b) curing the two coating layers A and B, c) removing and shaping sheet metal parts provided with the cured coating layer A on one side A″ and with the cured coating layer B on the other side B″, d) optionally, assembling the coated shaped sheet metal parts to form a construction with outwardly directed side A″ and e) electrodepositing an electrodeposition (ED) coating layer onto the electrically conductive surfaces and curing of the ED coating layer.