Easily-openable packaging container

Details Easily-openable packaging container Easily-openable packaging container

1992-11-06

1994-06-14

Coan, James F.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

531338, 493 61, 493355, B65B 6118, B65B 6102

Patent

active

053199103

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 peelig 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 seal portion. The packaging container has both of a good sealing property and an easy openability and has an excellent resistance to boiling and retort treatment, and peeled surface has 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:
patent: 2232783 (1941-02-01), Hausheer
patent: 3583125 (1971-06-01), Vermeulen
patent: 3874143 (1975-04-01), Braber
patent: 4280653 (1981-07-01), Elias
patent: 4865217 (1989-09-01), Yoshimoto
patent: 4901505 (1990-02-01), Williams, Jr.

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