Spirally, wound filter cartridge, apparatus system and method of manufacture and use
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United States of America Patent
Stats
-
Mar 17, 1992
Issued Date -
N/A
app pub date -
Sep 11, 1990
filing date -
May 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spirally wound ultrafiltration filter cartridge system and method which comprises a membrane sheet material forming a closed loop having a one end and an other end with first and second open spacer sheet materials, the membrane sheet material and spacer sheet material wrapped about a perforated center tube, the membrane sheet material sealed at either end by solid resin headers, the filter cartridge forming spirally wound permeate and concentrate flow channels and having a tangential, elongated feed inlet on the exterior surface of the filter cartridge. A concentrate stream is removed from the center tube and a permeate stream is removed from the one end of the closed loop of the membrane sheet material. The method of manufacture comprises spirally winding the closed end loop sheet material and the spacer sheet material about a perforated center tube and sealing either end of the membrane sheet material with a ptting resin.
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