Packing for a sheet-guiding cylinder in a processing machine

US7104195B2 · kind B2 · utility

Assignees

• MAN Roland Druckmaschinen AG · DE
• Coatec Gesellschaft für Oberflächenveredelung GmbH & Co. · DE

Inventors

• Gerhard Johner · Gelnhausen, DE
• Markus Kirst · Büttelborn, DE
• Ruth Kremer · Steinbach, DE
• Uwe Wilms · Schöneberg, DE
• Rainer Schneider · Erlangen, DE

Key dates

• Filing date: Oct 27, 2003
• Grant date: Sep 12, 2006
• Expiry date: Dec 28, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12993
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A printing and/or varnishing machine having a plurality of sheet-guiding cylinders in which at least one of the cylinders has an outer detachable packing which has enhanced ink repellent characteristics and which significantly reduces wear. The packing has a layered structure which includes a flexible backing material 12, the underside of which is assigned to the base body of the sheet-guiding cylinder 3, a coating 13 of molybdenum or tungsten carbide/cobalt which is adhesively applied to the upper side of the backing material 12, and a sealing layer 14 of a material made from the group of polysiloxanes which is adhesively applied to the upper side of the coating 13. The side of the packings 5, 6 which faces the material to be printed has a surface profile consisting of cones 18 with rounded tips 16 for reduced sheet contact.