Patent · US Expired

Method for the mechanical-thermal dewatering of a fiber stock web

US5071513A · kind A · utility

36Cited by

13References

17Claims

0Family size

Assignee

Sulzer-Escher Wyss GmbH · CH

Inventors

Reinhard Bluhm · Starnberg, DE
Herbert Holik · Ravensburg, DE
Peter Mirsberger · Weingarten, DE

Key dates

Filing date	Jan 23, 1990
Grant date	Dec 10, 1991
Priority date	—
Expiry date	Jan 23, 2010

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F3/0281
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

At least two substantially parallel rows of adjustable pressure elements cooperate with a heatable counter element like a counter roll and are arranged immediately consecutive but separate from each other to define at least two pressing sections of an extended pressing zone through which a water-containing fibrous web is passed conjointly with a water absorbing porous band or felt in a predeterminate travel direction. Pressures and temperatures in each one of the at least two pressing sections of the extended pressing zone are adjusted such that water is displaced from the fibrous web under the combined action of pressure and steam which is formed in the extended pressing zone in a controlled manner and without damage to the fibrous web due to explosion-like flash evaporation.

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