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:
Dec. 17, 2002
Filed:
Jun. 10, 1998
Applicant:
Inventor:
Mikael Berlin, Lund, SE;
Assignee:
Tetra Laval Holdings & Finance, SA, Pully, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/706 ; B32B 3/112 ;
U.S. Cl.
CPC ...
B29C 4/706 ; B32B 3/112 ;
Abstract
A laminated packaging material for liquid-tight, dimensionally stable packages has superior gas-barrier properties, particularly oxygen barrier properties. The laminated packaging material includes a core layer and a barrier layer juxtaposed to the core layer. The barrier layer is formed from a polyvinyl alcohol, a polysaccharide and a cross-linking agent, the polysaccharide being chitosan and the cross-linking agent being a dialdehyde compound. A method for making the laminated packaging material is also disclosed.