ELECTRODEPOSITED FOIL WITH CONTROLLED PROPERTIES FOR PRINTED CIRCUIT BOARD APPLICATIONS AND PROCEDURES AND ELECTROLYTE BATH SOLUTIONS FOR PREPARING THE SAME

摘要

a conductive copper foil (20) is used in the preparation of printed circuit boards is made by electrolysis from a solution (18) of electrolyte containing copper ions, sulfate ions, animal glue and thiourea.the thio urea has the effect of reducing the surface roughness of the sheet in order to allow a higher current density operation, and / or to modify the ductility of the leaf.