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. 15, 2009
Filed:
Nov. 25, 2003
Applicants:
Thomas Redden Veariel, Houston, TX (US);
Costas George Gogos, Wyckoff, NJ (US);
David Burton Todd, West Windsor, NJ (US);
Bainian Qian, Newark, NJ (US);
Inventors:
Thomas Redden Veariel, Houston, TX (US);
Costas George Gogos, Wyckoff, NJ (US);
David Burton Todd, West Windsor, NJ (US);
Bainian Qian, Newark, NJ (US);
Assignee:
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Melt fracture is reduced, without the necessity of polymer processing-aid additives specifically designed to alleviate exit region surface melt fracture phenomenon, by heating at least a portion of the die through which the polymer is extruded. The die exit region is maintained at a temperature above the bulk melt temperature of the polymer extruded through the die exit hole.