Method for forming container scored metal flap areas

Details Method for forming container scored metal flap areas Method for forming container scored metal flap areas

1975-07-16

1977-06-07

DiPalma, Victor A.

Receptacles

Compartmented container

Compartment partition is movable or removable

113 1F, 113 15A, 220266, 222541, B21D 5138

Patent

active

040276120

ABSTRACT:
The invention is directed to a metallic easy-opening can end, and to a method of manufacturing the same, the can end having a tear panel which is highly resistant to blowout pressure. The can end is first drawn between a preforming punch and a die to an outwardly open concave configuration, and is thereafter compression scored between a scoring punch and a scoring anvil to reduce the thickness of the drawn metal, thus forming the removable tear panel.

REFERENCES:
patent: 3227304 (1966-01-01), Asbury
patent: 3638825 (1972-02-01), Franek et al.
patent: 3870001 (1975-03-01), Brown
patent: 3881437 (1975-05-01), Lovell et al.
patent: 3902626 (1975-09-01), Jordan et al.
patent: 3912114 (1975-10-01), Morran et al.
patent: 3929251 (1975-12-01), Urmston

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