Filter element having microporous filter membrane

Details Filter element having microporous filter membrane Filter element having microporous filter membrane

B - Operations, Transporting

01

D

18/12, 182/14

B01D 13/00 (1985.01)

Patent

CA 1200766

FILTER ELEMENT HAVING MICROPOROUS FILTER MEMBRANE ABSTRACT A filter element comprising a hydrophilic organic polymeric microporous filter membrane having a preformed substantially non- porous sealing area and a filter housing having, preferably, a hydrophobic thermoplastic sealing surface in thermoplastic sealing relationship with the sealing area. Preferably, the filter membrane is a pleated cylindrical membrane and the housing includes endcaps thereto. The preferred membrane is nylon. The preferred pleated cylindrical membrane is produced from an elongated porous filtration area longitudinally bordered by substantially non-porous sealing areas. Such a membrane may be produced by a specific casting method or collapsing the pores along the logitudinal borders of the filtration area. The filter element is particularly useful for the filtration of aqueous liquids, particularly parenteral or body liquids.

409670

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