Process for electrochemical roughening of aluninum for...

Details Process for electrochemical roughening of aluninum for... Process for electrochemical roughening of aluninum for...

B - Operations, Transporting

41

N

204/86.5

B41N 3/03 (2006.01) B41N 3/04 (2006.01) C25F 3/04 (2006.01)

Patent

CA 2034426

Abstract of the Disclosure A process for roughening aluminum or alloys thereof for printing plate supports, wherein an electrochemical roughening is preformed by means of alternating current in an acidic electrolyte including sulfate ions and chloride ions, the chloride ions being in the form of aluminum chloride. In a preceding or subsequent roughening stage, mechanical roughening and/or electrochemical roughening by means of alternating current in an electrolyte is carried out. The electrolyte can include hydrochloric acid and aluminum ions, nitric acid and aluminum ions or sulfuric acid and chloride ions.

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