Envelopes – wrappers – and paperboard boxes – Paperboard box – Nonunitary – peelable closure or securing element
Patent
1986-12-01
1988-09-06
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Nonunitary, peelable closure or securing element
2291232, 2291233, 22912505, 22912511, 22912519, 22912534, B65D 4316, B65D 554
Patent
active
047687037
ABSTRACT:
An open ended carton including a membrane liner and a cover having a peripherally depending flange which overlies a top end portion of the carton. A transverse score line in the cover and contiguous perforation lines in the flange divide the cover into first and second sections to provide a hinged pour spout. An extension panel attached to a peripheral edge of the carton includes a terminal section which is heat sealed to an interior section of the peripheral cover flange. Severance of a hinged section of the extension panel defines an indentation between a top panel in the cover and the terminal section which receives the hinged section for locking reclosure of the cover. The cover is locked in open position by inward flexing of sections of the peripheral cover flange which are received in the carton opening.
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Hambleton Thomas P.
Sosler James L.
Elkins Gary E.
International Paper Company
Marcus Stephen
Zielinski Walt Thomas
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