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. 03, 1998
Filed:
Apr. 29, 1996
Peter Frisk, Chicago, IL (US);
Tetra Laval Holdings & Finance, S.A., Pully, CH;
Abstract
A high barrier, multilayer laminate is disclosed that is suitable for forming packages that contain oxygen sensitive products. The laminate material comprises a first layer including biaxially oriented polyethylene terephthalate, a second layer of a high barrier oxide material disposed exterior to the first layer, and a third layer of an adhesive material disposed interior to the first layer and joining the first layer to a fourth coextruded multilayer material. The fourth coextruded multilayer material comprises from exterior to interior: i) a first layer of a polyethylene material, ii) an oxygen scavenging layer comprising a polyethylene and an oxygen scavenger material, wherein the oxygen scavenging layer is disposed interior to the first layer of the polyethylene material, and iii) a second layer of the polyethylene material disposed interior to the oxygen scavenging layer. A further laminate structure suitable for forming a package containing an oxygen sensitive product is also disclosed. The further laminate comprises a first layer comprising biaxially oriented polyethylene terephthalate, biaxially oriented polyamide, or biaxially oriented polypropylene, a second layer of a high barrier oxide material disposed interior to the first layer, and a third layer of an adhesive material disposed interior to the second layer and joining the second layer to a fourth layer of a polyethylene material. The third layer of adhesive material includes an oxygen scavenger material.