Paperboard tray

Details Paperboard tray Paperboard tray

1978-01-16

1981-05-05

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229DIG4, B65D 528

Patent

active

042653908

ABSTRACT:
A paperboard tray includes flanges which abut but do not overlap when the tray is erected. The flanges are connected to tray side wall panels along fold lines which are selectively scored to compensate for different stiffness of the paperboard material along and across its grain. The selectively scored fold lines allow the flanges to uniformly bend when subjected to equal bending forces exerted on the flanges. The abutting flanges and the selectively scored flange fold lines make the tray particularly suitable for use in manufacturing processes in which the tray is lined with a non-porous film material.

REFERENCES:
patent: 1771760 (1930-07-01), MacClellan
patent: 2328563 (1943-09-01), Lichter
patent: 2932439 (1960-04-01), Sparling
patent: 3050229 (1962-08-01), Neff
patent: 3358900 (1967-12-01), Perdue
patent: 4042165 (1977-08-01), Elder

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