Easily-openable packaging container and lid for the same

Details Easily-openable packaging container and lid for the same Easily-openable packaging container and lid for the same

1987-09-30

1989-01-31

Hall, George T.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

220270, 220260, B65D 4100

Patent

active

048010413

ABSTRACT:
An easily-openable packaging container comprises a container body and a multilayer lid member heat-sealed at the flange portion of the container body, in which the multilayer lid member has an interlaminar strength smaller than the adhesion strength between said flange portion and the inner layer of the multilayer lid member so that the multilayer lid member can be delaminated at a portion corresponding to the heat-seal portion at the time of opening, and a means for circularly peeling the inner layer of the miltilayer lid member from the outer edge of the heat-seal portion to the inner edge or inner vicinity of the heat-seal portion is provided.
The easily-openable packaging container has both excellent sealing property and easy openability and can be opened with a stable opening force.

REFERENCES:
patent: 4280653 (1981-07-01), Elias
patent: 4693390 (1987-09-01), Hekal

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