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. 15, 1997
Filed:
Sep. 19, 1994
Applicant:
Inventors:
Ingvar Andersson, Loddekopinge, SE;
Thorbjorn Andersson, Sodra Sandby, SE;
Assignee:
Tetra Laval Holdings & Finance S.A., Pully, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B65B / ; B65D / ;
U.S. Cl.
CPC ...
156252 ; 156250 ; 156256 ; 531331 ; 531333 ; 531335 ; 53412 ; 220265 ; 220269 ; 220359 ;
Abstract
A packaging material for producing packages includes a foundation layer that is provided with a through hole. A thermoplastic strip covers the through hole and an outer layer completely covers the thermoplastic strip and foundation layer. Various other layers can also be laminated to the foundation layer. When the thermoplastic strip is torn off, the various other layers accompany the thermoplastic strip, thereby exposing the through hole.