Receptacles – Closures – Removable closure retained by adhesive or fusion means
Patent
1979-07-10
1982-06-08
Shoap, Allan N.
Receptacles
Closures
Removable closure retained by adhesive or fusion means
220258, 220270, 220276, 220458, 229 55, B65D 312, B65D 322, B65D 4150
Patent
active
043335853
ABSTRACT:
A sealed can or similar container having a can body the wall of which is internally lined with a coating is sealed with a deep-drawn membrane in a manner which leaves on the inside of the can wall surrounding a can top opening an annular zone uncovered by said membrane, but with the coating of the can wall intact, which annular zone extends between a lower internal edge of a rim-covering part of the membrane and the upper edge of a collar part of the membrane, which collar part is integral with, and extends upwardly from and surrounds a flat part of the membrane which covers the said can opening, and which collar part is glued or welded to the inside of the can wall beneath said uncovered zone. A preformed closure element destined for sealing fastening in a can opening, a process and apparatus for producing a rupturing zone in which preformed closure element, and a process and apparatus for manufacturing a sealed can with the aid of the preformed closure element are also described.
REFERENCES:
patent: 3397809 (1968-08-01), Ellerbrock
patent: 3465907 (1969-09-01), Dorn et al.
patent: 4003496 (1977-01-01), Ostrem
Herzfeld Heinrich W.
Shoap Allan N.
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