Easy opening lid for ovenable carton

Details Easy opening lid for ovenable carton Easy opening lid for ovenable carton

1990-03-28

1990-09-11

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Including tearing or breaking means for opening a nonunitary...

206628, 22912535, 2291602, B65D 554

Patent

active

049555308

ABSTRACT:
A paperboard lid for a tray type ovenable carton is provided with weakened score lines only in its lower surface to form an easy opening means. The lid includes a first continuous score line extending around the periphery of the lid and a second weakened score line of abbreviated length at one corner of the lid spaced from, but adjacent to, the first continuous score line. The lid preferably includes a right angle corner where the second weakened score line is located to provide a lift tab for venting the carton and for removing the lid to open the carton.

REFERENCES:
patent: 2990948 (1961-07-01), Zackheim
patent: 3101870 (1963-08-01), Betner
patent: 3244356 (1966-04-01), Welowicz et al.
patent: 3454210 (1969-07-01), Spiegel et al.
patent: 3550835 (1970-12-01), Persson
patent: 4091930 (1978-05-01), Buchner et al.
patent: 4312451 (1982-01-01), Forbes, Jr.
patent: 4491224 (1985-01-01), Horvath
patent: 4531668 (1985-07-01), Forbes, Jr.
patent: 4871071 (1989-10-01), Zimmermann

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