Spiral-wound membrane with improved permeate carrier
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United States of America Patent
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Feb 7, 1989
Grant Date -
N/A
app pub date -
Oct 1, 1987
filing date -
Oct 1, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed are spiral-wound membrane cartridge constructions for use in ultrafiltration and reverse-osmosis separation equipment. The membrane constructions include a membrane layer directly bonded to a permeate carrier layer characterized by a channel material having a plurality of parallel ribs extending in a transverse permeate-carrying direction, interconnected by a relatively thin matrix of smaller fibrils. It advantageously reduces resistance to permeate flow to a central collection point, and can be employed to separate both liquid and gaseous fluids.
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