Production of self-supporting nickel foil for (hot) embossing on substrate, e.g. mobile telephone base plate, involves electroplating on rotating cathode roller in nickel sulfamate bath with additives promoting lamellar structure

摘要

In producing self-supporting nickel foil by deposition on a cathode roller that dips into an electroplating bath and rotates inside an anode cage, then removing the foil, a standard nickel sulfamate bath is used with additives causing crystalline growth with lamellar structure, comprising 1-3 mg/l citric acid, 0.1-1 g/l saccharin and 1-5 mg/l phenolsulfonic acid.