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:
Sep. 28, 1993
Filed:
Jan. 08, 1992
Ake Rosen, Helsingborg, SE;
Tetra Alfa Holdings SA, Pully, CH;
Abstract
Packaging material for shaping into form stable liquid-tight containers with good oxygen-tight properties through fold forming, thermo-forming or other mechanical processing for shaping of the material. The packaging material (10) comprises a skeletal layer (11) and a barrier layer (12) attached to the skeletal layer with good adhesion. The skeletal layer (11) is composed of a mixture of plastic, preferably polyolefine, and filler to an amount of between 50 and 80% of the total weight of the mixture, and the barrier layer (12) is composed of a plastic material comprising plastic of the same type as the plastic in the skeletal layer (11), preferably polyolefine, in a mixture with plastic of another type than the one mentioned. The plastic of the aforesaid other type in the barrier layer (12) can be an ethylene/vinyl alcohol copolymer, polyvinylidene chloride, polyamide or similar plastic with good oxygen-tight properties, preferably an ethylene/vinyl alcohol copolymer to an amount of 40% or more of the total weight of the barrier layer.