Envelopes – wrappers – and paperboard boxes – Paperboard box – Including a polygonal – nonrectangular wall
Patent
1987-12-11
1989-02-14
Foster, Jimmy G.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including a polygonal, nonrectangular wall
220 234, 229120, 22912528, 22912529, 229DIG14, 229906, B65D 520, B65D 2104
Patent
active
048041378
ABSTRACT:
Disclosed is a container for packaging foods and particular frozen foods. The container includes a bottom tray and a like tray which has been inverted and turned 90 degrees to form a lid or cover for the bottom tray.
The tray is formed from a thermoplastic coated paperboard blank having a base portion, a plurality of cut and scored lines forming opposing upstanding walls when folded, and bonding panels extending from upper or lower edges of one pair of opposing upstanding walls. A cohesive emulsion is used on the bonding panels to secure the bottom tray to the lid.
The substantially identical cover and bottom tray can be made utilizing convential machinery and from various substrates including plastics. Other features of the container include vents for allowing release of pressure during heating and upwardly diverging walls allowing nesting. Another embodiment includes a compartmented container having multiple bottom trays and a single continuous cover unit.
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Elkins Gary E.
Foster Jimmy G.
Harby Colin F.
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