Container lid having an opening device

Details Container lid having an opening device Container lid having an opening device

1983-09-21

1985-08-06

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220267, 220260, 229 7R, B65D 1734

Patent

active

045330638

ABSTRACT:
A lid for a packaging container which include a tear-open part which is surrounded by a weakened line. The lid is molded of a composite material, which has an outer carrier layer of plastic, a middle barrier layer of metal foil and an inner heat-sealing layer of a thermoplastic synthetic material. The weakened line is produced as an indentation in the outer carrier layer by being heat-impressed using a heated tool.

REFERENCES:
patent: 4267937 (1981-05-01), Piltz et al.
patent: 4403710 (1983-09-01), Hirota et al.
patent: 4428494 (1984-01-01), Hirota et al.
patent: 4448324 (1984-05-01), Jeppson et al.

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