Filter element having microporous filter membrane

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

A - Human Necessities

61

M

182/13

A61M 1/03 (1980.01)

Patent

CA 1184512

FILTER ELEMENT HAVING MICROPOROUS FILTER MEMBRANE ABSTRACT A filter element comprising a hydrophilic nylon microporous filter membrane having a preformed substantially non porous sealing area of non-porous tape heat sealed to the membrane 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 end caps thereto. The preferred pleated cylindrical membrane is produced from an elongated porous filtration area longitudinally bordered by the substantially non-porous sealing areas. Such a membrane may be produced by applying a heat sealable non-porous tape along the longitudinal borders of the filtration area. The filter element is particularly useful for the filtration of aqueous liquids, particularly parenteral or body liquids.

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