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:
Aug. 13, 1991
Filed:
Jul. 05, 1989
Bengt Persson, Lund, SE;
AB Akerlund & Rausing, Lund, SE;
Abstract
A tearing strip of the delaminating type intended for attachment to opposite insides of a package. The strip has such a layer structure that, relative the inside of the package, it has a melted-together seal while internally the strip has layers which are not fully melted together. The strip comprises a central, strong layer and a first and second layer arrangement. The first layer arrangement has a well reproducable, high seal strength relative the central layer. However, the second layer arrangement is 'peelable' relative the first layer arrangements or more likely internally between two layers. In contrary the second layer arrangement has a well reproducable, high sealing strength relative the inside of the package.