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. 05, 1989
Filed:
Dec. 20, 1988
Tom Kjelgaard, Loddekopinge, SE;
Roby Teknik Aktiebolag, Lund, SE;
Abstract
Packing containers manufactured from plastic-coated paper and having a sealing fin wherein the packing material is joined inside-to-inside in a sealed union, the material layers so joined together accommodating between them, at least along a part of the sealing fin, a tearing strip inserted in the sealing fin which is sealed to the inner plastic coating of the packing material. To facilitate the pulling off of the tearing strip on opening of the container, the packing material is provided at least within the region of the part of the sealing fin accommodating the strip with a material layer adapted to weaken adherence which is applied between the fibrous layer and the inner plastic coating of the packing material and preferably consists of water glass.