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:
Jul. 28, 1992
Filed:
Oct. 16, 1990
Lars Lofgren, Staffanstorp, SE;
Cecilia Svensson, Sodra Sandby, SE;
Tetra Pak Holdings, S.A., Pully, CH;
Abstract
A flexible, laminated material (10) for reforming into packages for contents of the type such as oxygen- and flavor-sensitive liquid foods, for example fruit juices. The material displays a carrier layer (11) of paper or paperboard and a preferably extruded layer (13) applied to one face of the carrier layer (corresponding to the inside of the finished package), this layer consisting of a mixture of polyethylene and ethylene vinyl alcohol copolymer. Since the barrier layer (13) thus includes both a polar (the ethylene vinyl alcohol copolymer) and a non-polar (polyethylene) component, the material possesses barrier properties against both polar and non-polar flavor components, at the same time as the material moreover displays tightness properties vis-a-vis oxygen.