Easy-open package for fluent material

Details Easy-open package for fluent material Easy-open package for fluent material

1990-01-11

1991-04-23

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

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

220270, 22912535, 2291602, B65D 570

Patent

active

050093649

ABSTRACT:
An easy-open package for a fluent material comprises an upwardly open base vessel having an annular rim, a foil having an outer periphery engaging the rim and formed inward of the periphery with a nonstraight tear line defining a tearout portion, an open tab engaging the portion within the tear line, and respective bonds securing the foil at its periphery to the rim and securing the tab to the portion within the tear line.

REFERENCES:
patent: 1459110 (1923-06-01), Loufek
patent: 2745754 (1956-05-01), Steinbeck
patent: 3314569 (1967-04-01), Seiferth et al.
patent: 3321123 (1967-05-01), Collie
patent: 3964670 (1976-06-01), Amneus
patent: 3977562 (1976-08-01), Wedzik
patent: 4231487 (1980-11-01), Hasegawa
patent: 4533063 (1985-08-01), Buchner et al.
patent: 4762246 (1988-08-01), Ashley et al.
patent: 4798295 (1989-01-01), Rausing

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