Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1993-03-10
1993-09-14
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
2064595, 729245, B65D 542
Patent
active
052441458
ABSTRACT:
A venting/opening scheme for tray type cartons, wherein the tray has a continuous, upper peripheral flange to which a lid is bonded, and the tray includes opening instructions printed on a side wall for opening one of two adjacent corners of the tray, the improvement wherein a venting/opening means is applied to the tray flange at both of the two adjacent corners of the tray where the opening instructions are printed. The application of a venting/opening means at each corner allows the cartons to be opened by peeling the lid off from left-to-right or from right-to-left. The venting/opening means comprises partial depth cut lines located in the underside of the tray flange at each adjacent corner of the tray. The partial depth cut lines allow the portion of the tray flange outboard of the cut lines to be broken away from the continuous flange and used to lift the corner of the lid, thereby interrupting the bond between the lid and flange for venting and opening the carton
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Elkins Gary E.
Westvaco Corporation
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