Patent · US Active

Apparatus for dewatering a fibrous web

US7628891B2 · kind B2 · utility

2Cited by

12References

30Claims

0Family size

Assignee

Voith Patent GmbH · DE

Inventors

Daniel Gronych · Heidenheim, DE
Robert Koplin · Steinheim, DE
Klaus Hermann · Hirschhorn, DE
Georg Kleiser · Schwäbisch Gmünd, DE

Key dates

Filing date	Aug 3, 2006
Grant date	Dec 8, 2009
Priority date	—
Expiry date	Sep 20, 2027

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F5/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus for treating a fibrous web, in particular a paper, board or tissue web including a press section and a drying section. The press section includes a central roll around which an at least substantially impermeable belt wraps, the fibrous web being removed from this impermeable belt and fed to the drying section. In this case, as viewed in the web running direction, the first drying group of the drying section includes at most three drying cylinders. In the exit region of the first drying cylinder of the first drying group, in which the fibrous web runs off the drying cylinder together with a permeable circulating belt or is removed from the drying cylinder by such a permeable circulating belt, a removal zone to which vacuum is applied is provided on the side of the permeable circulating belt that faces away from the fibrous web.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.