Wire part of a machine for the manufacture of fibrous material webs

US5647958A · kind A · utility

Assignee

• Voith Sulzer Papiermaschinen GmbH · DE

Inventors

• Volker Schmidt-Rohr · Heidenheim, DE
• Hans-Peter Sollinger · Heidenheim, DE
• Klaus Henseler · Heidenheim, DE
• Klaus Esslinger · Nattheim, DE

Key dates

• Filing date: Jun 6, 1995
• Grant date: Jul 15, 1997
• Expiry date: Jun 6, 2015

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F1/48
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A wire part of a machine for the production of continuous fibrous material webs, especially a papermaking machine, includes two continuous wire belts which together form a twin-wire zone. At least one supporting element having a supporting surface is disposed in the region of the twin-wire zone. At least a part of the supporting surface provides a supporting region which supports a first wire belt on its inner surface and a second wire belt on its outer surface. At least one formation box is provided and is disposed in the supporting region. The formation box is designed in such a way that, in the region of the inner surface of the second wire belt in the formation box, pressure values can be adjusted from a reduced pressure to an excess pressure acting on the inner surface of the second wire belt. The formation box extends in the direction of movement of the wire part over at least a part of the supporting region.