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. 13, 2017
Filed:
Oct. 21, 2012
Heinz Gross, Rossdorf, DE;
Heinz Gross, Rossdorf, DE;
HEINZ GROSS, Rossdorf, DE;
Abstract
The invention relates to an extrusion head and a method with which the thickness distribution of hollow bodies, for example, can be further improved. The extrusion head consists of at least one mandrel () and one nozzle (), which have a rigid geometry and therefore cannot be varied or can also be deformed flexibly in some areas and form a flow channel (), wherein the positions of the mandrel () and the nozzle () can be varied relative to one another, so that the geometry of a discharge gap (s) of the flow channel () can be varied while a melt is being discharged, wherein each head part has at least one head section with a uniform cross-sectional area in a discharge area (A) of the extrusion head, and wherein at least one head part has at least two head sections (B) and (C), each of which has a predominantly uniform cross-sectional area within the head section (B), (C), which are spaced axially apart from one another and which have mutually different cross-sectional areas.