Patent · US Expired

Method for producing a non-woven fibre fabric

US6750166B1 · kind B1 · utility

7Cited by

4References

20Claims

0Family size

Assignee

Corovin GmbH · DE

Inventors

Stefan Etzold · Langenhagen, DE
Joachim Bauer · Hamburg, DE

Key dates

Filing date	Dec 20, 2000
Grant date	Jun 15, 2004
Priority date	—
Expiry date	Dec 20, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/602
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Disclosed is a method for producing a non-woven fiber fabric comprising a plurality of perforated structures extending along the entire cross-section of said fabric. The inventive method consists of the following steps: in a first step, the matted fibers are placed on a belt screen to form a web of fibers; in a second step, the web of fibers is conveyed to a perforated-structure manufacturing unit, in a third step, the perforated structures are manufactured by mechanically impinging upon the fibers, whereby the mechanical impingement upon said fibers does not affect the mechanical and chemical structure thereof; and in a fourth step, the web of fibers provided with said perforated structures is compacted in a compaction unit for form a non-woven fabric.

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