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:
Dec. 17, 2019
Filed:
Jun. 07, 2016
Leistritz Extrusionstechnik Gmbh, Nürnberg, DE;
Leistritz Extrusionstechnik GmbH, Nürnberg, DE;
Abstract
The invention relates to a measuring nozzle for determining the extensional viscosity of polymer melts during their processing, comprising a flow channel which has a rectangular cross-section and which has a transitional section () between an inlet section () and an outlet section () with respective constant cross-section, which transitional section tapers hyperbolically in the flow direction () between two mutually opposite channel walls (and). In order to provide advantageous measuring conditions it is proposed that the transitional section () comprises an inlet-side zone () in which the mutual distance of the two channel walls () between the two hyperbolic channel walls () decreases continuously in the direction of flow (), and an outlet-side zone () which adjoins the inlet-side zone and in which two of the channel walls () disposed opposite one another in pairs extend parallel to one another, while the two channel walls () arranged therebetween converge hyperbolically in the flow direction ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile