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:
Nov. 14, 1989
Filed:
Oct. 05, 1987
Applicant:
Inventors:
Gonzalo E Mazuera, Farmington, NY (US);
John R Wagner, Jr, Rochester, NY (US);
Assignee:
Mobil Oil Corp., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B29F / ;
U.S. Cl.
CPC ...
428516 ; 428349 ; 428520 ; 428910 ; 264171 ; 426127 ;
Abstract
Films having a core of ethylene-vinyl alcohol copolymer (EVOH) sandwiched between polyolefin, e.g. polypropylene are coextruded so that the polyolefin also encapsulates the EVOH layer on the side edges. The films which can contain adhesive layers are oriented greater than 4 greater in the machines direction and greater than 7 greater in the transverse direction to give excellent oxygen and moisture barrier properties.