Envelopes – wrappers – and paperboard boxes – Paperboard box – Including a polygonal – nonrectangular wall
Patent
1993-03-24
1995-05-02
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including a polygonal, nonrectangular wall
229155, 229186, 229902, B65D 524, B65D 564
Patent
active
054112044
ABSTRACT:
A reclosable food tray is disclosed generally comprising a receptacle portion and first and second pair of opposing closure flaps. The receptacle portion has a substantially trapazoidal volume defined by a rectangular shaped bottom panel and two substantially upstanding pair of opposing side panels. The two pair of opposing side panels define four pair of adjacent panels which are hingedly connected in a liquid-sealed manner by a folded gusset secured to the exterior surface of one of the adjacent side panels by adhesive. Each side panel is disposed at an obtuse angle measured from the bottom panel to facilitate stacking of the receptacle portion of successive trays. The first pair of opposing closure flaps extend from one pair of opposing side panels and are capable of closing off a portion of the access opening. The second pair of opposing closure flaps extend from the other pair of opposing side panels and are adapted to interlock with each other, overlap a portion of the first pair of opposing closure flaps, and close off the remaining portion of the access opening. In the preferred embodiment, the food tray is erected from a paperboard material which is substantially resistant to microwave and other heat radiation. In addition, an adhesive is used which resists melting upon exposure to microwave and other heat radiation. According to another aspect of the present invention, a tray blank is provided, from which the tray can be erected according to a simple, yet efficient method utilizing a minimum of folding operations.
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Elkins Gary E.
Fold-Pak Corp.
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