Membrane pack

Details Membrane pack Membrane pack

B - Operations, Transporting

29

C

182/15, 93/75

B29C 65/08 (2006.01) B29C 63/00 (2006.01)

Patent

CA 1193976

MEMBRANE PACK Abstract of the Disclosure A membrane pack is constructed, which includes a highly porous carrier sandwiched between a pair of membrane structures that must be kept continuously wet, the pack having a hole and being sealed around the hole to prevent the passage of polluting liquid lying in the hole, into the porous carrier of the pack. The membrane pack is constructed by impregnating the carrier with a flowable polymer which can solidify, to leave a thin layer of the polymer on either surface of the carrier, and by then welding the polymer layers to membranes at either face of the carrier. Ultrasonic welding of the membrane structures to the carrier is performed while the membrane structures are wet, the ultrasonic welding dissipating moisture lying at the interface between the carrier and membrace structures to permit even hydrophylic polymers to be utilized.

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