Patent ID: 7063780
Filing Date: 2006-06-20
Classification: C25F

Abstract:
1. A method for an indirect-electrification-type continuous electrolytic etching of a metal strip to continuously form grooves on the metal strip, the grooves being etched on at least one surface of the metal strip, the at least one surface including an etching mask provided in etching patterns thereon, comprising the steps of: (a) arranging at least one A series electrode and at least one B series electrode alternately at least in a pair with respect to one another to be in a particular order in a travelling direction of the metal strip so that the at least one A series and at least one B series electrodes face the at least one surface of the metal strip to be etched; (b) filling a space between the metal strip and the at least one A and at least one B series electrodes with an electrolyte; and (c) applying voltage across the at least one A series and at least one B series electrodes by alternately repeating: