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:
Jun. 18, 2002
Filed:
Jul. 03, 1996
Andrew VanPutte, Greenville, SC (US);
Cryovac, Inc., Duncan, SC (US);
Abstract
A coextruded packaging film has an outer and intermediate layer of fully hydrolyzed polyvinyl alcohol, partially hydrolyzed polyvinyl alcohol, or polyethylene oxide; and an inner layer comprising acid/acrylate copolymer, styrene maleic anhydride copolymer, ethylene acrylic acid copolymer, ionomer, cellulose, hydroxy propyl cellulose, polyether block amide copolymer, polyhydroxy butyric acid, polyhydroxy valeric acid, polyethylene oxide, polyester, copolyester, polyethyloxazoline, polyurethane, partially metal salt neutralized acid/acrylate copolymer, and a blend of acid/acrylate copolymer and ionomer. Fillers such as salt can optionally be added to one or more of the polymeric materials, prior to or during coextrusion of the film, to improve the processability of the film or to add a pigment to the film.