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US 4,266,698 AGranted
Opening arrangement for packing containers of thin plastic film together with a packing container provided with the opening arrangement
AssigneeTetra Pak Developpement SA
InventorAnders R. Rausing
Life of this patent
Estimating the term…
Abstract
A packing container having an outer casing and a package body disposed within the outer casing is disclosed. A wall portion of the package body is folded over and affixed to itself in the folded position, and a thin cutting thread is arranged within the folded wall portion so that the cutting thread is accessible from outside the packing container. Upon being pulled away from the wall portion, the cutting thread cuts through the wall portion to provide an opening in the package body.
Claims8
A packing container comprising:
- an outer casing including a first and a second end portion, said casing having an opening in said first end portion;
- a package body disposed within said outer casing, said body having a thin flexible wall;
- means for holding a portion of the wall in a folded position to form a fold therein;
- a cutting thread disposed within said fold;
- closure means on said opening, said cutting thread being secured to said closure means, whereby when said closure means is pulled from said opening, said cutting thread cuts through said portion of the wall to provide an opening therein.
2 more elements
Dependencies are inferred from the claim text.