Patent ID: 6402922
Filing Date: 2002-06-11
Classification: B29C,C25D

Abstract:
A method for electrolytic production of injection moulding moulds made of nickel for the production of CDs, with the nickel, being assigned as an anode and a workpiece, forming the counterpart to the injection moulding mould to be produced, being assigned as a cathode and both the nickel as well as the workpiece being held in an electrolytic solution which has been added a combination of halogens, characterized in that a pulsating direct current or alternating current is applied to the anode and cathode and the combination of the halogens comprises 3% to 7% of fluorine, 60% to 70% of chlorine, 20% to 25% of bromine and 5% to 10% of iodine.