Half slotted container lid with self-locking double side panels

Details Half slotted container lid with self-locking double side panels Half slotted container lid with self-locking double side panels

1989-09-12

1990-08-07

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

With closure for an access opening

229 23BT, B65D 568

Patent

active

049460935

ABSTRACT:
There is disclosed a half-slotted container body and lid, each made from a blank of corrugated paperboard. The lid blank has an additional score to provide a fold-line around the perimeter of the side and end panels at approximately one-half of the depth. This score line defines inner and outer panels of the lid's perimeter side and end walls. Where this fold-line intersects each of the panel score lines defining the ends of the side and end panels, there are two diagonal scores which radiate from that point in opposite directions extending to the free edge of the inner panels.
When the lid is set up, the top flaps are folded inwardly and secured to form a top of the lid, and the inner panels are folded inwardly hinged at the four corners by the diagonal scores. The inner panels are pushed in at the interior four corners of the lid locking the inner panels along the outer panels to provide a two-ply perimeter wall of the lid. The resulting inward bulge of the inner panels of the lid create a secure lock of the lid on the body and provide support for the sides of the body against outwardly bulging under load.
The continuous two-ply construction of the sides of the lid provide channeling space between adjoining containers in a stacked pallet load to enhance uniform air flow and cooling of produce, such as bananas and fruits, packed in the containers.

REFERENCES:
patent: 2021234 (1935-11-01), Gomes
patent: 2973127 (1961-02-01), Royce
patent: 3157345 (1964-11-01), George
patent: 3907194 (1975-09-01), Davenport et al.
patent: 4474324 (1984-10-01), Forbes, Jr.
patent: 4580718 (1986-04-01), Muise

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