Treating circuit boards comprises preparing pure or treated etching solution from a process solution container of the etching machine, feeding the consumed etching solution to a treatment station and returning to the container

摘要

Process for treating circuit boards (2) using an etching solution (4) in an etching machine (1) comprises preparing pure or treated etching solution from a process solution container (6) of the etching machine for spraying the circuit boards, feeding the consumed etching solution to a treatment station and returning the etching solution to the process solution container only after complete treatment of the etching solution. An independent claim is also included for an installation for treating circuit boards.