Dupont Safety & Construction, Inc.

Menno Bos

Natalia Widjojo

Martin Heijnen

The present invention is related to a method for fabricating multilayer singlebore membranes () or multilayer multibore membranes () for ultrafiltration applications including the following method steps: (a) feeding at least a material of a substrate (), at least one material of a functional layer () and a bore fluid () to a spinneret () simultaneously; (b) forming said membranes () as a tube-like string () in a one-step process in said spinneret (); (c) thereby assigning a functionality to said functional layer () applied on at least one surface () of said substrate (). The invention is also related to a spinneret () for fabricating multilayer singlebore membranes () or multilayer multibore membranes (), using the inventive method, and to a system comprising such a spinneret ().

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Greifenberg, Germany

Menno Bos