Method and apparatus for wet-in-wet coating of a moving layer of material

US6063192A · kind A · utility

Assignee

• Voith Sulzer Papiermaschinen GmbH · DE

Inventors

• Ingo Gottwald · Steinheim, DE
• Bernhard Kohl · Heidenheim, DE
• Albrecht Meinecke · Heidenheim, DE
• Benjamin Mendez · Heidenheim, DE
• Michael Trefz · Aub, DE
• Martin Kustermann · Heidenheim, DE

Key dates

• Filing date: Jun 12, 1997
• Grant date: May 16, 2000
• Expiry date: Jun 12, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H23/70
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method and apparatus for coating a traveling layer of material, in particular paper and/or cardboard. An applicator implement applies a predetermined and proper amount of a liquid or pasty medium onto an outer surface of a first rotating applicator roller which in turn transfers the liquid or pasty medium onto a first side of the moving layer of material just as it is moving through a press nip. A second layer of coating medium is applied indirectly with a second applicator implement onto an outer surface of a second rotating applicator roller from where it is transferred onto the previously coated side of the moving material layer while the first coat of coating medium is still wet.