Material web drier

US4312139A · kind A · utility

Assignee

• Escher Wyss GmbH · CH

Inventors

• Erich Preisler · Murnau am Staffelsee, DE
• Karl Bilek · Murnau am Staffelsee, DE
• Reinhard Pinter · Graz, AT
• Rudolf Greimel · Gratwein-Straßengel, AT
• Milada Weinmann · Murnau am Staffelsee, DE
• Herbert Holik · Ravensburg, DE
• Guntram Feurstein

Key dates

• Filing date: Jun 23, 1980
• Grant date: Jan 26, 1982
• Expiry date: Jun 23, 2000

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F26B21/004
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A material web drier containing a device for controlling the gas flow of a drying medium as a function of the actual state of the wet material web which is to be dried, comprising nozzle casings or surfaces containing blow-out or discharge openings arranged in cooperating relationship with respect to the material web. The discharge openings are directed towards the material web and serve for blowing-out the drying medium onto the web. For the purpose of dosing the gas flow or stream effluxing at the nozzle casings or surfaces, there are provided opening and closing elements which free the discharge openings or partially or completely close the same, as desired, whereby it is possible to vary the impingement of the material web by the drying medium selectively at discrete locations or regions thereof, both in the lengthwise and transverse directions of such material web.