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:
Feb. 22, 2022
Filed:
Jul. 23, 2020
Applicant:
Westrock Mwv, Llc, Atlanta, GA (US);
Inventors:
Chitai C. Yang, Mechanicsville, VA (US);
Rahul Bhardwaj, Glen Allen, VA (US);
Chester E. Alkiewicz, Glen Allen, VA (US);
Assignee:
WESTROCK MWV, LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 27/10 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); D21H 27/18 (2006.01); D21H 19/22 (2006.01); D21H 19/38 (2006.01); D21H 19/82 (2006.01); B32B 27/10 (2006.01); D21H 19/20 (2006.01); D21H 27/30 (2006.01); B32B 29/00 (2006.01); B32B 27/18 (2006.01); D21H 19/58 (2006.01);
U.S. Cl.
CPC ...
D21H 27/10 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/18 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 29/002 (2013.01); D21H 19/20 (2013.01); D21H 19/22 (2013.01); D21H 19/38 (2013.01); D21H 19/385 (2013.01); D21H 19/58 (2013.01); D21H 19/82 (2013.01); D21H 19/828 (2013.01); D21H 27/18 (2013.01); D21H 27/30 (2013.01); B32B 2264/10 (2013.01); B32B 2264/102 (2013.01); B32B 2264/104 (2013.01); B32B 2307/31 (2013.01); B32B 2307/732 (2013.01); B32B 2551/00 (2013.01); B32B 2553/00 (2013.01);
Abstract
A coating for paperboard includes polyethylene outer layers and a polyethylene inner layer with calcium carbonate filler. In addition to the lower cost, benefits include a surprising better heat sealing behavior compared with a coating of polyethylene alone.