Flat separation membrane leaf and rotary separation apparatus containing flat membranes
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United States of America Patent
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Jan 4, 1994
Issued Date -
N/A
app pub date -
Aug 26, 1992
filing date -
Nov 30, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a flat separation membrane leaf, which is characterized by consisting of a flat membrane support comprising an inner layer having a coarse structure and surface layers comprising a nonwoven fabrics having a dense structure, wherein the surface layers are integrated with the inner layer interposed between them, and semipermeable membranes covering both sides of the support in such a manner that the semipermeable membranes penetrates into the openings of the nonwoven fabrics of the surfaces of the support to combine the semipermeable membranes with the surfaces of the support. The invention provides also a flat separation membrane element which comprises, as the essential component, the above-described flat separation membrane leaf.
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International Classification(s)
Cited Art Landscape
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