Anodizing aluminum strip in bath between electrodes

Details Anodizing aluminum strip in bath between electrodes Anodizing aluminum strip in bath between electrodes

C - Chemistry, Metallurgy

25

D

204/127, 204/15

C25D 17/00 (2006.01) B41N 3/03 (2006.01) C25D 11/04 (2006.01)

Patent

CA 1244793

Abstract of the Disclosure In the process for continuously anodically oxidizing one surface of strips of aluminum or an aluminum alloy, a direct current is caused to act on the strips, by at least one anode and at least one cathode, which are arranged in an aqueous electrolyte. The anode(s) and cathode(s) electrochemically act, from opposite sides and simultaneously, on the strip which moves past them and which is, in particular, conveyed substantially horizon- tally past the substantially horizontally arranged elec- trodes. A device for carrying out a process of this kind compri- ses a) at least one treating bath (2) which is filled with an aqueous electrolyte (3), b) at least one anode (5) each, which is arranged in the electrolyte, below the strip (1) to be treated, and c) at least one cathode (4) each, which is arranged in the electrolyte, above the strip (1) to be treated. A strip which has been treated in this manner is pre- ferably used as a support material in the production of offset-printing plates which are provided with a radiation-sensitive coating.

455990

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