Patent · US Expired

Process for the production of irregular non-woven material sheets

US5045271A · kind A · utility

11Cited by

14References

7Claims

0Family size

Assignees

J.H. Benecke AG · DE
Corovin GmbH · DE

Inventors

Kurt Mente · Hannover, DE
Gerhard Knitsch · Großburgwedel, DE

Key dates

Filing date	Jun 28, 1989
Grant date	Sep 3, 1991
Priority date	—
Expiry date	Jun 28, 2009

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H3/03
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In the production of irregular non-woven material sheets of synthetic filaments, the warp from spinnerets is drawn off by means of a draw-off device and then deposited on a substrate. To avoid tangling of the individual filaments, they are guided along a nozzle wall formed by slot nozzles stacked on top of each other and forming a draw-off device. The slot nozzles as well as the air compressor are operated polytropically. The deposit of the warp on the substrate is accomplished by a flip-flop cross winding.

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