Process for the production of coated substrates

Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...

Reexamination Certificate

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C427S409000

Reexamination Certificate

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10842312

ABSTRACT:
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 of the metal sheet to form coating layer B which is electrically conductive when cured, wherein each of the coating compositions A′ and B′ are 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 sides A″ ande) electrodepositing an electrodeposition (ED) coating layer onto the electrically conductive surfaces and curing of the ED coating layer.

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