Process for removal of lumen fillers and other soluble residues from hollow filaments
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United States of America Patent
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Jul 14, 1998
Grant Date -
N/A
app pub date -
Feb 26, 1996
filing date -
Jul 4, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process and an apparatus for removal of a lumen filler and/or other soluble residues from hollow filament bundles are described. The hollow filament bundles are first roughly cleaned by centrifuging, after which in a process preferably containing multiple steps they are cleaned by spraying and centrifuging. The first spraying step is preferably carried out in a pass-through mode and each of the additional steps under recirculation. After a constant concentration has been attained, the cleaning baths in each case are employed for a lower-order treatment step, the cleaning bath of the first spraying step being fed to a recycling process.
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