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Easy opening lid for ovenable carton

  • US 4,955,530 A
  • Filed: 03/28/1990
  • Issued: 09/11/1990
  • Est. Priority Date: 03/28/1990
  • Status: Expired due to Fees
First Claim
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1. In combination, a paperboard lid having at least two adjacent side edges which meet at a ninety degree corner, an upper face and a lower face, and a tray having outwardly extending upper flanges to which the lid is adhered, the improvement comprising:

  • (a) a first continuous weakened score line extending around the periphery of the lid and located in the lower surface of the lid at a distance from the side edges thereof that is equal to or greater than the width of the flange of the tray to which the lid is adhered; and

    ,(b) a second weakened score line formed in the lower surface of the lid at the ninety degree corner of the lid and located between the outer peripheral edge of the lid and the outer edge of the flange of the tray to which the lid is adhered.

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