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:
Apr. 16, 1996
Filed:
Jun. 03, 1994
Anne Roulin, Molondin, CH;
M Bertrand Jaccoud, Siviriez, CH;
Tetra Pak (Suisse) SA, Romont, CH;
Abstract
A layered material such as a packaging laminate for a packaging container possessing superior oxygen gas and aroma barrier properties. The packaging laminate comprises a first laminate unit and a second laminate unit which are bonded together by the intermediary of an interjacent layer of an adhesive. The first laminate unit has a rigid, but foldable core layer and outer, surrounding layers of thermoplastic, and the second laminate unit has a flexible substrate or carrier layer of thermoplastic which, on its surface, carries a layer acting as an oxygen gas and aroma barrier and consisting of a silicon oxide deposited by chemical plasma deposition and having the general chemical formula SiO.sub.x, in which x may vary within the range of between 1.5 and 2.2. A flexible laminate having a SiO.sub.x barrier layer is also disclosed.