Press roll for web material

US4518460A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Ludwig Hauser · Heidenheim, DE
• Wilhelm Wanke · Oettingen, DE

Key dates

• Filing date: Sep 21, 1982
• Grant date: May 21, 1985
• Expiry date: Sep 21, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C13/028
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The disclosure concerns a press roll for pressing a web passing through a nip between the press roll and an 2 associated roll, particularly in a paper making machine. The press roll includes a rigid inner shell and flexible, elastic outer shell which rotates around the inner shell. An outwardly pressurized elongate pressure ledge is placed in the inner shell at the nip to produce an elongated nip and to be pressurized in opposition to the associated roll at the nip. In an alternate embodiment, the pressure ledge has a pressurized, outwardly facing recess facing the outer shell. A drive roll drives the outer shell to rotate around the inner shell. Recesses in the inner shell carry lubricant for lubricating the rotation thereof.