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:
Mar. 07, 2000
Filed:
Jul. 16, 1997
Applicant:
Inventor:
Michael T Heffelfinger, Westerville, OH (US);
Assignee:
Mobil Oil Corporation, Fairfax, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
4283202 ; 428515 ; 428516 ; 428484 ; 428910 ; 264 41 ; 2642902 ; 26417314 ; 26417315 ;
Abstract
A multi layer film having enhanced barrier properties with respect to oxygen and water vapor transmission is provided. The multi layer film includes a polyolefin core layer, a copolymer or terpolymer intermediate layer on at least one surface of the polyolefin core layer, with the intermediate layer having voids therein and including a wax trapped within the voids, and a surface layer on the intermediate layer. Multi layer films according to the present invention are particularly useful as packaging films for food products, and are successful in laminating, printing or coating operations.