The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2016
Filed:
May. 08, 2014
Gneuss Gmbh, Bad Oeynhausen, DE;
GNEUSS GMBH, Bad Oeynhausen, DE;
Abstract
The invention relates to a method and a device for operating a screen wheel filter for highly viscous melts having pressures >10 bar and temperatures >90° C. which shall be further developed in such a way that less of the highly viscous melt is wasted and that the operation of the screen wheel filter can be made more economical. For this purpose the screen wheel () according to the invention is rotationally driven at least one complete revolution, with respect to one of the screen inserts () located in the melt channel (), before the particular screen insert () is replaced and/or backflushed, and wherein the drive speed and drive cycling for the screen wheel () are set in dependence on the thermal or oxidative decomposition behavior of the particular melt in such a way that, when the particular screen insert () reenters the melt channel () of the screen wheel filter (), the melt remaining in the particular screen insert () has experienced thermal decomposition or oxidative decomposition of ≦3% cleaved molecular chains, preferably ≦1% cleaved molecular chains.