Patent · US Expired

Process and apparatus for producing a fiber web

US4865798A · kind A · utility

5Cited by

5References

6Claims

0Family size

Assignee

Carl Schenck AG · DE

Inventors

Walter Henschel · Otzberg, DE
Gerhard Melzer · Herbstein, DE
Uwe Kunstmann · Roßdorf, DE

Key dates

Filing date	May 6, 1988
Grant date	Sep 12, 1989
Priority date	—
Expiry date	May 6, 2008

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H1/736
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for the production of a fiber web on a movable, gas-permeable surface of a continuous laydown belt which is under vacuum and which forms a distribution chamber. After the fibers are mechanically opened, the fiber flow is conducted into the distribution chamber by means of an air current and additional air currents are delivered to the distribution chamber. An additional air current is introduced into the distribution chamber for the purpose of preventing a lumping together of fibers prior to the laydown in the web while the carrying air current is delivered to the distribution chamber in a nozzle-shaped chute. After the fibers have been laid down in a web, the web is precompressed by means of a controllable vacuum.

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