SURFACE-TREATED COPPER FOIL PROVIDED WITH BROWNING-TREATED FACE, METHOD OF PRODUCING THE SURFACE-TREATED COPPER FOIL, ELECTROMAGNETIC WAVE SHIELDING ELECTRICALLY CONDUCTIVE MESH FOR FRONT PANEL OF PLASMA DISPLAY USING THE SURFACE-TREATED COPPER FOIL

摘要

PROBLEM TO BE SOLVED: To provide surface-treated copper foil having a satisfactory brown color, and also workable by an ordinary copper etching process, and to provide an electrically conductive mesh for PDP produced with the surface-treated copper foil.;SOLUTION: Regarding the surface-treated copper foil in which one side is provided with a browning-treated face, e.g., the one provided with a browning-treated face characterized in that one side of a copper foil layer is provided with a roughening-treated layer, the surface of the roughening-treated layer is provided with a cobalt sulfate plated layer, and both the sides thereof are provided with rust prevention-treated layers is adopted. Regarding the production of the surface-treated copper foil, e.g., a process where one side of copper foil is subjected to roughening treatment, the roughening-treated surface is subjected to electrolysis at a current density of 2 A/dm² using a brown cobalt plating liquid comprising cobalt sulfate (heptahydrate) to form rust prevention-treated layers, and water washing and drying are performed is adopted.;COPYRIGHT: (C)2005,JPO&NCIPI