METHOD FOR THE PRODUCTION OF A MEMBRANE ENVELOPE

The current invention relates to a method for the production of a filtration membrane envelope comprising a 3D spacer fabric interposed between two membrane layers cast onto said 3D spacer fabric, wherein said method comprises a casting step, wherein during said casting step a polymer solution is ap...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VAN HOOF, Stephan, COLAERS, Maarten, AERTS, Peter, BRÜSS, Ulrich
Format:	Patent
Sprache:	eng
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	The current invention relates to a method for the production of a filtration membrane envelope comprising a 3D spacer fabric interposed between two membrane layers cast onto said 3D spacer fabric, wherein said method comprises a casting step, wherein during said casting step a polymer solution is applied to the outer surface of said 3D spacer fabric, wherein said polymer is applied by means of an injection process by means of a casting module and wherein said excess of coating material is removed by a casting head comprising a casting head, wherein prior or during the casting process the variation in thickness, roughness and/or tapering of the fabric is measured and the distance between the 3D fabric and the casting head is adjusted based on said measurement.