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:
Jan. 08, 2019
Filed:
Sep. 29, 2014
Erema Engineering Recycling Maschinen Und Anlagen Gesellschaft M.b.h., Ansfelden, AT;
EREMA Engineering Recycling Maschinen und Anlagen GmbH, Ansfelden, AT;
Abstract
The invention relates to a filter device for polymer melts, having a filter screen (), through which the polymer melt to be purified is guided, wherein the filter device comprises at least one scraping element (), which glides across the upstream surface () of the filter screen () with its scraping edge (), or rests on the surface () with its end area nearest the scraping edge (), and lifts off and/or scrapes off the contaminations () adhering to the surface () and those present in front of the screen orifices () in the course of its movement across the surface (). According to the invention it is provided that the scraping edge () has a curvature () at least in the end area of the same, leading in the direction of movement (), the radius (R) of which is less than 90%, preferably less than 50%, in particular less than 20% of the maximum diameter, or of the maximum orifice width of the screen orifices ().