Demetallizing contact devices in galvanizing plants used in production of circuit boards or foils comprises chemically etching auxiliary electrode during electrolytic metallization and simultaneously demetallizing

摘要

Demetallizing contact devices in galvanizing plants used in the production of circuit boards or foils comprises chemically etching an auxiliary electrode during the electrolytic metallization and simultaneously demetallizing. An independent claim is also included for a device for demetallizing contact devices in galvanizing plants used in the production of circuit boards or foils comprising an electrolytic auxiliary cell (26) consisting of contact devices (7) as anodes and auxiliary electrodes (14, 15) as cathodes.