Method of cleaning a sintered powdered metal filter

Liquid purification or separation – Processes – Separating

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210749, 210797, 210798, 134 2216, 134 2217, 134 2218, 134 2219, 134 26, 425225, B01D 2962

Patent

active

054878365

ABSTRACT:
A method of cleaning polymer residue from a polymer melt filter formed of a sintered powdered metal includes pyrolyzing the polymer residue-contaminated filter within a heated chamber at a temperature within the range from about 400.degree. to about 600.degree. C. and for a time sufficient to pyrolyze substantially all of the polymer residue. Simultaneously with such treatment, the heated chamber is flushed with steam to prevent combustion of the polymer residue. The pyrolyzed filter is then treated with a solvent and back-flushed with a pressurized fluid stream by passing the fluid steam through the filter in a direction opposite to the polymer melt flow therethrough.

REFERENCES:
patent: 3084076 (1963-04-01), Loucks et al.
patent: 3788486 (1974-01-01), Bergstrom
patent: 3865628 (1975-02-01), Callahan et al.
patent: 4200471 (1980-04-01), Burghardt et al.
patent: 4493756 (1985-01-01), Degen et al.
patent: 4954180 (1990-09-01), Malloy
patent: 5240613 (1993-08-01), Tsuchitani et al.
patent: 5246589 (1993-09-01), Nichols et al.
Chemiefasern/Textilindustrie, vol. 34/86 (Jun. 1984), pp. 409-411 translated by J. Cornelsen.
Engineering Report No. 1-12 by Fuji Filter Manufacturing Co., Ltd., Charlotte, N.C. (Jan. 1992).
R. E. Duffy, "Basic Methods for Removing Polymer from Parts", International Fiber Journal (Jun. 1991).
F. Fourne, Chemiefasern/Textilindustrie, vol. 35/87 (Jun. 1985), pp. 397-403.
F. Fourne, Kunststoffe, 79 (1989) 9, pp. 807-813.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of cleaning a sintered powdered metal filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of cleaning a sintered powdered metal filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of cleaning a sintered powdered metal filter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-155414

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.