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:
Jul. 05, 2022
Filed:
Jan. 28, 2022
Coretech System Co., Ltd., Zhubei, TW;
CORETECH SYSTEM CO., LTD., Zhubei, TW;
Abstract
The present disclosure provides a method of measuring an extensional viscosity of a polymer melt and a capillary injection system. The method includes the operations of: based on a weighted GNF viscosity model, obtaining a viscosity profile of the polymer melt according to a transport equation, a Navier Stokes equation, and a Trouton function; measuring a pressure drop of the polymer melt; obtaining a general viscosity of the polymer melt from the viscosity profile according to the pressure drop, wherein the general viscosity comprises a shear viscosity of the polymer melt and the extensional viscosity of the polymer melt; and extracting the extensional viscosity from the general viscosity.