Patent · US Active

Machine for dewatering and drying a fibrous web

US11286617B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

Voith Patent GmbH · DE

Inventors

Daniel Gronych · Heidenheim, DE
Thomas Ruhl · Bischofswerda, DE

Key dates

Filing date	Dec 3, 2018
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Jun 17, 2039

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F7/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A machine for dewatering and drying a paper, cardboard or other fibrous web, to which machine a fibrous stock suspension is fed which is formed at least partially from waste paper. The machine includes at least two press nips which are formed in each case by two press rolls, wherein a fibrous web runs through first press nip with a water absorbing dewatering belt on both sides. The fibrous web then runs through a second press nip with at least one other dewatering belt and a smooth impermeable transfer belt on both sides. A transfer belt transfers the fibrous web after second press nip to a belt in a downstream machine unit, e.g. dryer group. The dryer group allows the fibrous web to be guided in a serpentine manner alternatively over heated dryer cylinders and vacuum equipped guide rolls.

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