The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2004
Filed:
Dec. 20, 2000
Stefan Etzold, Langenhagen, DE;
Joachim Bauer, Hemmingen, DE;
Corovin GmbH, Peine, DE;
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.