Easily-openable packaging container

Details Easily-openable packaging container Easily-openable packaging container

1990-01-17

1992-03-03

Gehman, Byron P.

Special receptacle or package

For tobacco, pipe or cigarette holder

Laminate wall

206484, 220359, 2291232, B65D 554

Patent

active

050924699

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

REFERENCES:
patent: 3491935 (1970-01-01), Trotter, Jr. et al.
patent: 3589568 (1986-05-01), Ito et al.
patent: 3655503 (1972-04-01), Stanley et al.
patent: 3783089 (1974-01-01), Hurst et al.
patent: 3997677 (1976-12-01), Hirsch et al.
patent: 4308084 (1981-12-01), Ohtusuki et al.
patent: 4382513 (1983-05-01), Schirmer et al.
patent: 4469258 (1984-09-01), Wright et al.
patent: 4905838 (1990-03-01), Suzuki et al.

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