Process for cleaning an assembled spin pack of a melt spinning a

Details Process for cleaning an assembled spin pack of a melt spinning a Process for cleaning an assembled spin pack of a melt spinning a

1996-07-22

1998-03-17

Warden, Jill

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 221, 134 10, 134 2211, 134 42, 264 39, 264442, B08B 304

Patent

active

057282269

ABSTRACT:
A supercritical fluid (SCF) or near SCF is used in a cleaning process for cleaning a spin pack of a melt spinning apparatus. The SCF enables cleaning of the spin pack without requiring spin pack disassembly. In an exemplary embodiment, the SCF is recirculated to a recirculating chamber where polymer residue can be precipitated from the SCF, and the SCF can be re-purified for subsequent cycling through the same or a next assembled spin pack.

REFERENCES:
patent: 2974070 (1961-03-01), Domgeren
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patent: 3488412 (1970-01-01), Bielfeldt et al.
patent: 3671653 (1972-06-01), Berry, Jr.
patent: 4124666 (1978-11-01), Wilholm et al.
patent: 4714526 (1987-12-01), Pennisi et al.
patent: 4976900 (1990-12-01), Tsutsumi
patent: 5126058 (1992-06-01), Beckman
patent: 5233021 (1993-08-01), Sikorski

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