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:
Jun. 09, 2015
Filed:
Jun. 07, 2011
Stefan Keusch, Brühl, DE;
Frank Schüller, Vettweiss-Gladbach, DE;
Stefan Keusch, Brühl, DE;
Frank Schüller, Vettweiss-Gladbach, DE;
Mauser-Werke GmbH, Bruehl, DE;
Abstract
The present invention relates to a method and a device for cleaning extrusion heads () in the extrusion of thermoplastic plastic materials which are ejected or extruded as tubular preform () from an extrusion nozzle (). For removing interfering deposits and cakings () on the discharge nozzle (), according to the present invention the tubular preform () is briefly deflected and upset, wherein the deposits () adhering in a proximate region of the discharge nozzle () are wiped off from the tubular preform () and transported away. Advantageously, the tubular preform () is during its deflection itself used as cleaning element, wherein the cleaning takes place automatically during the continuous operation of the continuous extrusion without interrupting the production process.