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. 19, 1992
Filed:
Mar. 12, 1991
Applicant:
Inventor:
Todd H Huffman, Roanoke, VA (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264 80 ; 264171 ; 2641761 ; 264 22 ; 4251335 ; 427326 ;
Abstract
A non-foil paperboard laminate having improved resistance to the migration of essential oils, flavors and vitamins in liquid packaging and improved oxygen barrier characteristics for both liquid and dry packaging has a paperboard sandwiched between two layers of a heat-sealable, low density polyethylene polymer and including a symmetrical five component barrier layer coextruded onto the surface of one of the low density polyethylene layers. The barrier layer includes low density polyethylene/adhesive tie layer/Ethylene vinyl alcohol copolymer/adhesive tie layer/low density polyethylene.