Method of forming score in can end plate and method of attaching

Details Method of forming score in can end plate and method of attaching Method of forming score in can end plate and method of attaching

1981-11-09

1983-11-22

Gilden, Leon

Sheet metal container making

Method

Forming or treating metallic closure

413 17, 413 19, 413 59, 413 67, B21D 5138

Patent

active

044165765

ABSTRACT:
A method of providing a can end plate with a score and a tab for facilitating the opening of the can. The method comprises the steps of lining the can end plate with a layer of a thermoplastic resin at at least one side thereof, forming a score in the can end plate through the layer of thermoplastic resin and attaching a tab member to the can end plate, and heating and pressing the thermoplastic resin to melt, press and charge the thermoplastic resin into the score while sealing the juncture between the tab member and the can end plate by means of the thermoplastic resin, thereby to completely eliminate any leak or exudation of the content through the score and the juncture between the tab member and the can end plate.

REFERENCES:
patent: 3273234 (1966-09-01), Henchert
patent: 3463107 (1969-08-01), Lipske
patent: 3832963 (1974-09-01), Gayner
patent: 3884382 (1975-05-01), Ball
patent: 4004530 (1977-01-01), Walter
patent: 4208976 (1980-06-01), Stelter
patent: 4309952 (1982-01-01), Tabahashi

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