Paper machine

US4648942A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Wilhelm Wanke · Oettingen, DE
• Ludwig Hauser · Heidenheim, DE

Key dates

• Filing date: Apr 1, 1985
• Grant date: Mar 10, 1987
• Expiry date: Apr 1, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21F5/04
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A paper machine where the press section features exclusively double felt roll presses (13-16; 23-26) through which proceeds the paper web (10) to be dehydrated between two felt belts (15,16; 25, 26). The paper web (10) is constantly supported by a backing belt (34) at least in the first drying group of the drying section. The transition of the paper web (10) from one roll press to the next and from the press section to the drying occurs without an open draw. The first drying cylinder (31) is located outside the backing belt loop (34), with the paper web (10) proceeding across the upper cyliner area of this drying cylinder (31). The entrance point of a rope carrier (45,46) (serving to thread the paper web into the drying section) is located behind the leaving point of the paper web (10) from the first drying cylinder (31).