Envelopes – wrappers – and paperboard boxes – Wrapper – Bottle
Patent
1986-11-20
1987-09-15
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Wrapper
Bottle
220441, 229 23R, 229DIG4, B65D 542
Patent
active
046934138
ABSTRACT:
A corner fold structure for a paperboard bin. Large bulk bins formed of layers of corrugated paperboard laminated together, often are manufactured with a pair of 180 degree folds, the folds permitting shipment of the bins in a collapsed condition prior to (individually) erecting them. After erection, at least one of the layers or plys of corrugated paperboard, at or adjacent the original 180 degree fold, now being a 90 degree fold, is often distorted, the fold sometimes bulging at the outer portion of the outermost ply or layer. According to this invention, an elongated zone of adhesive is provided between the outermost and the next layer of corrugated paperboard, in combination with score lines adjacent to and parallel with the line of adhesive. This line of adhesive is substantially parallel with the fold line or axis of the 180 degree fold. By such adhering together of the outermost and next layer or ply along this zone, the final 90 degree fold exhibits substantial uniformity therealong. This results in both improved appearance and strength of the bulk bin.
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Churvis Michael A.
Gandy Russell E.
McFarland William W.
Elkins Gary E.
International Paper Company
Marcus Stephen
Zielinski Walt Thomas
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