Process and device for spraying a moving fibrous web

US6444090B1 · kind B1 · utility

Assignee

• Voith Sulzer Papiertechnik Patent GmbH · DE

Inventors

• Robert Wolf · Woodbury, US
• Markus Oechsle · Heubach, DE
• Frank Wegehaupt · Ulm, DE
• Lothar Bendig · Pfullingen, DE
• Klaus Landvatter · Waiblingen, DE
• Reinhard Gaa · Metzingen, DE

Key dates

• Filing date: Sep 28, 2000
• Grant date: Sep 3, 2002
• Expiry date: Sep 28, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B1/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process and apparatus for spraying a moving fibrous web with at least one jet. The process includes feeding a controlled volume flow of a spray agent to the at least one jet through at least one pulsing valve, and damping and reducing pulses occurring in the controlled volume flow of the spray agent. The apparatus includes at least one jet arranged to be fed with a controlled volume flow of a spray agent, at least one pulsing valve which feeds the controlled volume flow of the spray agent to said at least one jet, and at least one pulse damper arranged to damp or reduce pulses occurring in the controlled volume flow of the spray agent.