Semipermeable membrane cartridge and method of making

Details Semipermeable membrane cartridge and method of making Semipermeable membrane cartridge and method of making

B - Operations, Transporting

01

D

B01D 63/10 (2006.01) B01D 65/00 (2006.01) B29C 70/72 (2006.01) B29C 67/24 (2006.01)

Patent

CA 2075220

Cartridges for use in ultrafiltration or reverse osmosis separation devices are formed by injection molding a generally tubular, smooth, seamless shell about a spirally-wrapped semipermeable membrane assembly. These cartridges can be used within traditional separation devices having pressure vessels of precise interior diameter, for which the cartridges are uniquely suited because they have cylindrical surfaces of true circular cross-section and close tolerances. The cartridges can also be created so as to incorporate integral pressure vessels and thus permit their use in separation processes without the need for surrounding supporting pressure vessels. A reaction injection molding process is shown which provides for substantial efficiencies in the overall manufacturing of semipermeable membrane separation cartridges of the spirally-wound variety.

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