Patent ID: 7931805
Filing Date: 2011-04-26
Classification: B01D,B29C,B29L,Y10S

Abstract:
1. Method for the production of a membrane filter unit for liquid or gaseous media, the membrane filter unit having a plurality of capillary membranes open on at least one face, which are cast into a sealing layer that has hardened to form a solid head piece, in a region close to the end, with regard to the open membrane end, whereby the open membrane ends protrude on the outside of the sealing layer, wherein the sealing layer is disposed on a spacer that has a layer that is penetrated by the capillary membranes and is impermeable for the casting material that hardens to form the sealing layer, whereby capillary membranes are inserted into the spacer with one protruding end, which spacer has a layer that is penetrated by the capillary membranes and is impermeable for casting material, whereby a sealing layer of viscous casting material is applied to the spacer, which material fills the free space between the capillary membranes that protrude at the top of the spacer, up to a level below the membrane ends, and hardens to form a solid head piece, whereby the spacer comprises a perforated plate in which the openings of the perforations are stretchable to insert the capillary membranes therethrough, and whereby a capillary membrane is inserted through each of the perforation openings.