Composite container

Details Composite container Composite container

1981-10-08

1985-09-03

Shoap, Allan N.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Cylindrical or conical body, or wall structure

220 67, 220450, 229 56, 413 4, 413 7, B65D 820, B21D 5130

Patent

active

045387583

ABSTRACT:
An improved hermetically sealed composite container formed by double-seaming a pair of compounded metal ends to extended length flanges on the opposite ends of a can body so that the compound is bonded to an inner liner on the can body to provide an effective seal. The compound material is placed in the seaming panel and curl area of the metal ends so as to provide a more extensive seal area when the metal ends are double-seamed with the extended flanges on the can body. The extended length flanges provide a considerably greater contact area between the can body inner liner and the metal ends when the metal ends are double-seamed to the can body.

REFERENCES:
patent: 2633095 (1953-03-01), Magill et al.
patent: 3073480 (1963-01-01), Henchert
patent: 3156401 (1964-11-01), Kraus
patent: 3157336 (1964-11-01), Elam
patent: 3159515 (1964-12-01), Dunlap, Jr. et al.
patent: 3228552 (1966-01-01), Rutledge
patent: 3381594 (1968-05-01), Ellerbrock et al.
patent: 3406891 (1968-10-01), Buchner et al.
patent: 3428239 (1969-02-01), Wannamaker et al.
patent: 3580464 (1971-05-01), Griffith
patent: 3700524 (1972-10-01), Sato
patent: 4055271 (1977-10-01), Kronenwetter

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