Envelopes – wrappers – and paperboard boxes – Paperboard box – Separate reinforcing element
Patent
1993-10-04
1994-11-15
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Separate reinforcing element
206503, 229 23R, 229916, 229919, B65D 532
Patent
active
053640233
ABSTRACT:
A box structure comprising box side walls, a bottom wall, and two end walls, the two end walls each having substantially greater thickness than the side walls and the bottom wall. The end walls have peripheral edges, the bottom wall and the side walls have edge portions overlapping certain of the peripheral edges of the end walls. There are fasteners attaching the bottom wall and the side wall edge portions to the end wall peripheral edges, the fasteners penetrating through the bottom wall and the side wall edge portions and into the end walls via the certain peripheral edges thereof. The end walls consist essentially of cellular foamed polyethylene, which has specific gravity between 0.800 and 0.940. The bottom wall and the side walls form a continuous strip, which is folded to fit against the certain peripheral edges of the end walls, the certain peripheral edges being flat. The fasteners comprise nails driven into the cellular polyethylene.
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Elkins Gary E.
Haefliger William W.
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