Process and device for dewatering a fibrous material web

US6475343B1 · kind B1 · utility

Assignee

• Voith Sulzer Papiertechnik Patent GmbH · DE

Inventors

• Joachim Grabscheid · Gerstetten, DE
• Karl Josef Böck · Heidenheim, DE
• Ulrich Begemann · Leonberg, DE
• Thomas Elenz · Barueri, BR
• Peter Mirsberger · Weingarten, DE
• Hans Dahl · Ravensburg, DE
• Hannes Vomhoff · Djursholm, SE
• David A. Beck · Appleton, US

Key dates

• Filing date: Oct 26, 2000
• Grant date: Nov 5, 2002
• Expiry date: Oct 26, 2020

Classification

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

Abstract

Process and apparatus for dewatering a fibrous material web. The process includes guiding the fibrous material web through a dewatering zone, and directing a plurality of gas pressure pulses of a pressurized displacement gas one after the other onto a surface of the fibrous material web within the dewatering zone. The apparatus includes a device for forming a plurality of gas pressure pulses which are arranged one after the other within the dewatering zone. The plurality of gas pressure pulses are directed onto a surface of the fibrous material web.