Apparatus for applying a liquid or viscid coating medium onto a moving fiber material web

US6171653A · kind A · utility

Assignee

• Voith Sulzer Papiertechnik Patent GmbH · DE

Inventors

• Bernhard Kohl · Heidenheim, DE
• Martin Kustermann · Heidenheim, DE
• Oswald Satzger · Giengen an der Brenz, DE
• Rudiger Kurtz · Heidenheim, DE
• Harald F. Hess · Ravensburg, DE
• Karl-Heinz Hannen · Augsburg, DE
• Hans-Peter Hoffmann · Dachau, DE
• Franz Kustos · Duisburg, DE

Key dates

• Filing date: Jan 8, 1999
• Grant date: Jan 9, 2001
• Expiry date: Jan 8, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An apparatus applies a liquid or viscid coating medium onto a moving material web, especially one made of paper or cardboard. A coating mechanism first applies the coating medium onto an applicator element or an applicator roll, which subsequently transfers the coating medium at a coating location onto the material web in the form of a coating layer. Furthermore, if so desired, a doctoring device can be positioned at a doctor station, adjacent to the coating location, on the downstream side relative to the movement of the material web for the purpose of smoothing and/or metering the coating. The coating apparatus incorporates an apparatus for the generation and/or supplying of a fluid, preferably steam. This apparatus is positioned adjacent to the coating location or to the doctor station on the downstream side relative to the movement L of the material web.