Dual ovenable food package

• US 5,588,587 A
• Filed: 11/22/1995
• Issued: 12/31/1996
• Est. Priority Date: 11/22/1995
• Status: Expired due to Fees

• Current Assignee: International Paper Company
• Original Assignee: International Paper ZAO (Sylvamo Corp.)
• Inventors: Liquori, Katherine S., Stier, David E.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US08/561,729
• Time in Patent Office: 405 Days
• Field of Search: 229/207, 229/232, 229/902, 229/903, 229/905, 229/906, 206/557, 426/113-115
• US Class Current: 229/232
• CPC Class Codes: B65D 5/5455 the lines of weakness being provided in a closure hinged to an edge of the container body
• CPC Class Codes: B65D 77/0433 the inner container being a tray or like shallow container, not formed by folding or erecting one or more blanks B65D81/3862 takes precedence
• CPC Class Codes: B65D 81/343 specially adapted to be heated in a conventional oven, e.g. a gas or electric resistance oven
• CPC Class Codes: B65D 81/3453 Rigid containers, e.g. trays, bottles, boxes, cups
• CPC Class Codes: Y10S 229/903 Ovenable, i.e. disclosed to be placed in an oven
• CPC Class Codes: Y10S 229/906 Baked goods

Abstract

A package for either conventional oven or microwave heating of refrigerated or frozen foodstuffs includes an outer paperboard container and an inner food carrying tray or dish. The bottom of the plastic tray rests on the container bottom. The dish is flanged, the flange provided with one or more ears extending downwardly and sandwiched between container side walls. The dish flange is polygonal, having one or more edges abutting respective one or more interior walls of the container. A portion of the top cover of the container is removed by ripping along tear lines. The tear or ripping lines yield four triangular corner sections on the remaining, unripped container top cover, these sections overlying portions of the tray flange. This arrangement prevents the tray from being removed from the container through the top cover access opening defined upon ripping. The construction permits the use of much thinner plastic for the tray since the paperboard container assists in supporting and rigidifying the tray during shipping, storage, and manual handling by the consumer.

Claims

1. A container formed from a unitary blank of paperboard and being of generally rectangular parallelepiped form for packaging a food containing dish, the container having a bottom wall, four side walls, and a top wall, one of said container side walls being a first of said container side walls defined by a depending wall from said top wall and an upstanding wall from said bottom wall to thereby define a first container side wall of two plies of paperboard, a dish positioned on said container bottom wall, said dish having a bottom and upstanding side walls, said dish bottom resting on said container bottom wall, said dish having an upper horizontal flange extending radially outwardly therefrom, said horizontal flange having a first radially outwardly extending ear, said a first flange ear being bent downwardly and sandwiched between said two plies of paperboard of said first container side wall, means carried by said container top wall for facilitating ripping off a portion thereof to yield an access opening to said dish, said access opening being smaller in dimension than said dish flange to thereby prevent said dish from being removed from said container after said ripping.

2. The container of claim 1 including a second radially outwardly extending dish flange ear, another of said container side walls being a second of said container side walls defined by a depending wall from said container top wall and an upstanding wall from said container bottom wall to thereby define a second container side wall of two plies of paperboard, said second flange ear being bent downwardly and sandwiched between said plies of said second container side wall.

3. The container of claim 1 wherein said means for ripping includes tear lines which form corners on said container top wall, said corners overlying portions of said dish flange.

4. The container of claim 1 wherein said tray flange has a plurality of straight free edges, at least one of said flange free edges being in abutting contact with at least one of said container side walls.

5. The container of claim 2 wherein said second flange ear is diametrically opposed to said first flange ear.

6. A paperboard container of generally rectangular parallelepiped form for packaging a food containing dish, the container having a bottom wall, four side walls, and a top wall, one of said container side walls defined by a depending wall from said top container wall and an upstanding wall from said bottom container wall to thereby define a first container side wall of two plies of paperboard, a dish positioned on said container bottom wall, said dish having a bottom wall and upstanding side walls, said dish bottom resting on said container bottom wall, said dish having an upper radially outwardly extending ear, said dish ear being bent downwardly and sandwiched between said two plies of paperboard of said first container side wall, means carried by said container top wall for facilitating ripping off a portion thereof to yield an access opening to said dish.

7. The container of claim 6 wherein said container is formed of a unitary blank.