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:
Jun. 16, 1992
Filed:
Dec. 19, 1989
Lars Lofgren, Staffanstorp, SE;
Peter Frisk, Malmo, SE;
Tetra Pak Holdings S.A., Pully, CH;
Abstract
A laminated material for the manufacture of packing containers with good gas and aroma barrier properties and or parts for such containers, and a method for the manufacture of the laminated material (1). The laminated material (1) comprises a first partial laminate (1) comprising a carrier layer (2) of thermoplastics and a barrier layer (3) of inorganic material of 50-500 .ANG. thickness serving as a gas and aroma barrier and a second partial laminate (1b) comprising a carrier layer (4) and a barrier layer (5) of inorganic material of 50-500 .ANG. thickness serving as a gas and aroma barrier, these partial laminates being joined to one another by means of an intermediate layer (6) of bonding agent, their respective barrier layers facing inwards towards one another.