Envelopes – wrappers – and paperboard boxes – Paperboard box – Having means to facilitate opening the box by severing box...
Patent
1994-05-05
1994-10-25
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Having means to facilitate opening the box by severing box...
229227, 229237, B65D 554
Patent
active
053581768
ABSTRACT:
A tearstrip opening for the closure flap of a paperboard container is formed by a single line of tear and an adjacent delamination area located within the closure flap. The tearstrip is applied to one or more of the closure flaps of the container as required. The tearstrip is removed by the combined action of separation of the paperboard along perforations which define the single line of tear and ply separation of the paperboard adjacent to a partial depth cut line of weakness spaced from the single line of tear. When removed, the tear strip releases the closure flap from a side wall of the container while leaving a portion of the closure flap still attached to the side wall.
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Elkins Gary E.
Westvaco Corporation
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