Vlaamse Instelling Voor Technologisch Onderzoek (vito)

Vlaamse Instelling Voor Technologisch Onderzoek

Chris Dotremont

Herman Beckers

Wim Doyen

Willy Doyen

Walter Adriansens

A membrane has a permeate channel including a 3D spacer fabric having an upper and a lower fabric surface () spaced apart by monofilament thread () at a predefined distance, the permeate channel being interposed between two membrane layers (), wherein the membrane layers are linked at a multitude of points with the upper and lower fabric surfaces to form an integral structure with a high bonding strength suitable for backflush operations. A method provides an integrated permeate channel membrane, including the steps of: &#x2014;Providing a 3D spacer fabric having an upper and lower surface fabric () spaced apart by monofilament thread () at a predefined distance; and&#x2014;Applying a membrane layer to both the upper and the lower surface fabric.

Integrated permeate channel membrane

A process for manufacturing asymmetric braid reinforced capillary ultra- or micro-filtration membranes (), including the subsequent steps of pulling a tubular braid () through a spinneret () and coating the braid with a dope. Prior to the coating step, the braid is impregnated with a non-coagulation liquid, being a liquid which does not cause coagulation of the dope, when brought in contact with the dope. The result is a membrane with an outer skin, i.e. smaller pores near the outside diameter than near the inside diameter, and a coating which is closely arranged around the outside diameter of the braid, without any substantial penetration of the coating into the braid.

Growing community of inventors

Kessel-lo, Belgium

Chris Dotremont