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. 30, 2015
Filed:
Apr. 05, 2012
Applicant:
Dwayne M. Shearer, Seattle, WA (US);
Inventor:
Dwayne M. Shearer, Seattle, WA (US);
Assignee:
Weyerhaeuser NR Company, Federal Way, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/10 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 29/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/10 (2013.01); Y10T 428/1303 (2015.01); Y10T 428/264 (2015.01); Y10T 428/3175 (2015.04); Y10T 428/31913 (2015.04); Y10T 428/31797 (2015.04); Y10T 428/31743 (2015.04); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 29/00 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2439/40 (2013.01);
Abstract
A co-extruded microlayered polymer barrier film is provided. The barrier film can be applied to paperboard to form a container having reduced oxygen gas permeability. Co-extrusion of the barrier film allows for the simultaneous fabrication of tens or hundreds of alternating microlayers of two different polymers that combine to form a film having reduced oxygen gas permeability compared to macro layer thickness films of the same two polymers.