METHOD FOR PRODUCING FABRIC-REINFORCED CAPILLARY MEMBRANES, IN PARTICULAR FOR ULTRAFILTRATION

摘要

The invention relates to a method for producing fabric-reinforced capillary membranes, in particular for ultrafiltration. According to said method, a fabric tube (1) is coated with a polymer solution and is guided through a precipitation bath (6), where the polymer solution is converted into a microporous layer and a membrane that is reinforced by the fabric tube is formed. The invention is characterised in that the fabric tube coated with t he polymer solution passes through the precipitation bath (6) without mechanica l contact from top to bottom and exits via a lower nozzle (7). A liquid, flowi ng through said nozzle (7), enables a tensile force that stabilises the course of the coated fabric tube to be exerted on the capillary membrane (8) that exit s the precipitation bath.