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:
Mar. 10, 2009
Filed:
Mar. 12, 2002
Klaus Vossenkaul, Aachen, DE;
Stefan Schäfer, Aachen, DE;
Klaus Vossenkaul, Aachen, DE;
Stefan Schäfer, Aachen, DE;
Koch Membrane Systems GmbH, Aachen, DE;
Abstract
The invention relates to a method for producing fabric-reinforced capillary membranes, particularly for ultrafiltration, in which a fabric tube () is coated with a polymer solution and is guided through a precipitation bath (), where the polymer solution is converted into a microporous layer in the precipitation bath (), and a membrane that is reinforced by the fabric tube is formed. According to the invention, the fabric tube coated with the polymer solution passes through the precipitation bath () from top to bottom, without mechanical contact, and exits through a nozzle () at the bottom. Liquid flows out of the nozzle (), which liquid exerts a tensile force stabilizing the course of the coated fabric tube, on the capillary membrane () leaving the precipitation bath.