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:
Oct. 14, 2003
Filed:
Aug. 03, 2001
Applicant:
Inventors:
Axel Nickel, Peine, DE;
Stefan Etzold, Langenhagen, DE;
Assignee:
Corovin GmbH, Peine, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D04H 1/54 ; D04H 3/00 ; D04H 3/16 ;
U.S. Cl.
CPC ...
D04H 1/54 ; D04H 3/00 ; D04H 3/16 ;
Abstract
A process is disclosed for the manufacture of a spunbonded fabric consisting of thermobonded curled bicomponent fibers where the bicomponent fibers consist of two plastic materials with different properties. The process according to the invention consist of three steps: the fibers spun from the two plastic materials are drawn off uncurled and stretched in a first step. In a second step the fibers are placed on a sieve belt and thermobonded. In a third step the bicomponent fibers of the obtained nonwoven fabric are finally curled by lengthwise and/or transverse stretching and heat treatment.