Envelopes – wrappers – and paperboard boxes – Paperboard box – Bottom wall includes a folded extension of a sidewall
Patent
1997-09-24
1999-03-30
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Bottom wall includes a folded extension of a sidewall
22911716, 229115, 229142, 22912539, 22912519, 229117, 229918, 229199, B65D 500
Patent
active
058877827
ABSTRACT:
A quick-assembly corrugated box has an automatic bottom panel which extends from a side panel, and has two converging reverse-scored fold lines which extend outwardly from the side panel. End flaps are folded up from the automatic bottom panel and are adhesively connected to the end panels to form double ply side walls. One of the end flaps has a diagonal fold line, with portions of the flap above the diagonal fold line only being adhered to the end panel. The angles of the reverse scored fold lines are selected to allow the automatic bottom panel to be deployed from a folded position alongside the side and end panels to an assembled position perpendicular to the side and end panels, simply by displacing one side panel with respect to the other. Substantially increased stacking strength is provided by inserting right-angle corner pieces in reinforcement-receiving pockets defined between the edges of the end flaps and the end panels. Tabs may be provided on the end flaps to permit engagement and retention of the corner pieces. The box may be conveniently sealed by hook-and-loop fastener material affixed to closure flaps which extend downwardly from two overlapping side top flaps.
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Elkins Gary E.
Mai Tri M.
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