Tube of non woven material for reversed osmosis
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United States of America Patent
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-
Jul 29, 1980
Issued Date -
N/A
app pub date -
Dec 3, 1975
filing date -
Nov 6, 1972
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composite tubular assembly comprising a membrane for membrane filtration fixed to the inner side of a tube of non woven material, consisting of a wound band of a sealable fibres containing non woven material, which may be helically or non helically wound, consecutive overlapping windings of the band being completely interconnected by ultrasonic heatsealing and thereby forming a smooth inner wall of the tube.
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