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:
Aug. 21, 1990
Filed:
Jun. 14, 1989
Applicant:
Inventor:
Debora F Massouda, Silver Spring, MD (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B65D / ;
U.S. Cl.
CPC ...
428 342 ; 428349 ; 428511 ; 428516 ; 428520 ;
Abstract
A non-foil paperboard laminate having excellent flavor barrier with superior heat sealability comprises paperboard having a layer of a heat-sealable, modified polyolefin extrusion coated onto its outer surface, a layer of low density polyethylene polymer extrusion coated onto its inner surface, and a product-contact barrier layer extrusion coated onto the inner layer of low density polyethylene polymer. The product-contact barrier layer may comprise one or more layers of a polymer having low permeability to flavor oils.