Plastic and nonmetallic article shaping or treating: processes – Repairing or restoring consumer used articles for reuse
Patent
1994-05-24
1996-11-19
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Repairing or restoring consumer used articles for reuse
156 94, 425 11, 427140, B32B 3500
Patent
active
055759637
ABSTRACT:
A method of selective clogging of failed hollow fibers of a membrane module, including a pack or bundle of fibers in a shell-side and bore-side arrangement which includes failed fibers and non-failed fibers, comprises the steps of: clogging bores of all of the fiber at one end of the pack or bundle of the fibers; substantially evacuating the membrane module both at the shell-side and at the bore-side; filling the bore-side and the shell-side with a non-permeant gas; subsequently-holding the membrane module vertically, disconnecting the bore-side of the membrane module from a supply of the non-permeant gas and dipping another end of the membrane module opposite to the clogged end into a reservoir containing a liquid sealant; applying a reduced pressure to the shell-side for a period of time sufficient to permit suction of sealant into the bores of the failed fibers through a failure of which vacuum is applied to the bore-side; allowing the sealant to solidify at least partially to clog the bores of both the failed fibers and the non-failed fibers; and cutting off a length of the bundle of the fibers such that the bores of the non-failed fibers are exposed while the bores of the failed fibers remain clogged.
REFERENCES:
patent: 3499062 (1970-03-01), Geary, Jr. et al.
patent: 4170695 (1979-10-01), Brown et al.
patent: 4226921 (1980-10-01), Tsang
patent: 4230463 (1980-10-01), Hemis et al.
patent: 4248648 (1981-02-01), Kopp
patent: 5221388 (1993-06-01), Haubs et al.
Azariah Moshe
Cohen Haim
Golub Dan
Saguee Shlomo
Soffer Abraham
Aftergut Karen
AGA Aktiebolag
Rotem Industries Ltd.
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