Process for the electrolytic processing especially of flat items and arrangement for implementing the process

US6395163B1 · kind B1 · utility

Assignee

• Atotech Deutschland GmbH & Co. KG · DE

Inventors

• Reinhard Schneider · Cadolzburg, DE
• Rolf Schroeder · Stuttgart, DE
• Klaus Wolfer · Böblingen, DE
• Thomas Kosikowski · Burgthann, DE

Key dates

• Filing date: Oct 13, 1998
• Grant date: May 28, 2002
• Expiry date: Oct 13, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S205/92
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process for electrolytically processing a flat perforated item, comprising the steps of: moving the item in a transport direction to a treatment station where the item is contacted with an electrolyte, continuously mechanically wiping, in the presence of one of a cathodic item and an anode, and an anodic item and a cathode, a surface of the item using means for reducing the thickness of a diffusion layer depleted in metal ions adjacent the surface of the item, which means include a wiping roller extending perpendicular to the transport direction over the entire width of the item and in contact with the item; and moving the electrolyte in a direction substantially perpendicular to a plane of the item so as to direct the electrolyte only toward the perforations in the item and to convey the electrolyte through the in the item under pressure.