Easily-openable packaging container having notched inner surface

Details Easily-openable packaging container having notched inner surface Easily-openable packaging container having notched inner surface

1988-12-02

1990-03-06

Gehman, Bryon P.

Special receptacle or package

With pallet feature

Knockdown or collapsible type

206484, 206629, 206633, 220359, 2291232, B65D 554

Patent

active

049058380

ABSTRACT:
A multilayer container having a flange portion and an easily-openable packaging container packaged by using said multilayer container, wherein the interlaminar strength of said multilayer container is smaller than the peeling strength between said flange portion and the lid member, and a ring notch is provided to an inner surface layer of the flange portion inside a heat sealed portion.
The packaging container has both a good sealing property and an easy openability and has an excellent resistance to boiling and retort treatment, and 9 peeled surface having a good appearance.
A method for producing said multilayer container and a method for producing said packaging container, and an apparatus to be used for producing said multilayer container, and a method for filling and packaging, and an apparatus for filling and packaging are disclosed.

REFERENCES:
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patent: 3572579 (1971-03-01), Mueller et al.
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patent: 4280653 (1981-07-01), Elias
patent: 4351473 (1982-09-01), Manizza
patent: 4533576 (1985-08-01), Tanahashi et al.
patent: 4589568 (1986-05-01), Ito et al.
patent: 4801041 (1989-01-01), Takata et al.

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