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:
May. 22, 1984
Filed:
Apr. 08, 1982
Stuart J Kurtz, Martinsville, NJ (US);
Terry A De Rossett, Hastings-on-Hudson, NY (US);
Montgomery T Shaw, Mansfield Center, CT (US);
Union Carbide Corporation, Danbury, CT (US);
Abstract
Method and apparatus for testing thermoplastic material comprising: passing as a stream a fractional, continuous, molten and flowable sample of the material to and successively through each of either a controllable pumping zone maintained at constant temperature and pressure or controllable pressure zone maintained at constant flow rate and temperature, and a die zone to form a continuous strand of the material; measuring the viscosity of the material in the pumping and die zones; providing a measurement of elasticity by obtaining a measurement of percentage of cross-section area swell in the strand in passage from the die zone over a constant length distance downstream of a point of strand marking to a point of strand marking to a point of mark sensing; and combining the viscosity measurement with the elasticity measurement to provide fuller rheological characterization data for the material.