Envelopes – wrappers – and paperboard boxes – Paperboard box – Having means to facilitate opening the box by severing box...
Patent
1990-11-21
1992-01-14
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Having means to facilitate opening the box by severing box...
229208, 53412, B65D 574
Patent
active
050802330
ABSTRACT:
A gable-top container including a weakened line formed in one of the facing surfaces of the first and second upper rib panels to induce controlled delamination of one of the first and second upper rib panels during opening of the pouring spout, to reduce the force required to open the pouring spout.
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Griswold Gary L.
Kirn Walter N.
Marcus Stephen
McDonald Christopher J.
Minnesota Mining and Manufacturing Company
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