Wet press and method for treating a fibrous material web

US6221214A · kind A · utility

Assignee

• Voith Sulzer Papiermaschinen GmbH · DE

Inventors

• Gerhard Kotitschke · Steinheim, DE
• Wolfgang Mayer · Chieming, DE
• Klaus Esslinger · Nattheim, DE
• Andreas Meschenmoser · Ravensburg, DE
• Gunther Morhardt · Embu das Artes, BR

Key dates

• Filing date: Dec 22, 1997
• Grant date: Apr 24, 2001
• Expiry date: Dec 22, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F3/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A wet section of a machine for producing a fibrous material web that includes at least one press. The press includes a nip through which the fibrous material web is guided. The fibrous material web is preformed in a web forming zone. At least one press is an elongated nip press that is elongated in direction of the web travel. This nip is positioned in a region where the dry matter content of the preformed fibrous material web that comes into the nip is less than or equal to about 15% and, preferably is less than or equal to about 12%. A method for treating a fibrous material web in a wet section of a machine for producing the fibrous material web. The wet section includes at least one press including an elongated nip, at least one press and the elongated nip are elongated in a web travel direction. Further, the elongated nip is positioned in a region of the machine where the dry matter content of the fibrous material web, as it enters the elongated nip, is less than or equal to about 15%. The method includes preforming the fibrous material web in a forming section of the machine, guiding the fibrous material web to the at least one elongated nip, and pressing the fibrous material …