Heated drying cylinder

US6442868B1 · kind B1 · utility

Assignee

• Voith Sulzer Papiertechnik Patent GmbH · DE

Inventors

• Robert Wolf · Woodbury, US
• Markus Oechsle · Heubach, DE
• Wolfgang Mayer · Chieming, DE
• Thomas Mack · Sontheim, DE
• Roland Mayer · Heidenheim, DE

Key dates

• Filing date: Jul 21, 2000
• Grant date: Sep 3, 2002
• Expiry date: Jul 21, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F26B13/18
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A drying cylinder for drying a fibrous web, the cylinder having an inner chamber connected to a pressurized air source; and an outer cylinder jacket having an air-permeable region which is adapted to contact the fibrous material web. Also a drying section for drying a fibrous web, including at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air-permeable region; a circulating belt arranged to press the fibrous web against the outer cylinder jacket and belt being arranged to partially wrap around the drying cylinder; and a pressurized air source connected to the inner chamber is described. Finally, a process for drying a fibrous web in an apparatus that includes at least one drying cylinder having an inner chamber and an outer cylinder jacket having an air permeable region, the process including pressurizing the inner chamber of the drying cylinder with air; and guiding the fibrous material web partially around the drying cylinder with a circulating belt wherein the circulating belt presses the fibrous material web against the air permeable portion of the cylinder jacket is described.