Scored metal flap areas

Details Scored metal flap areas Scored metal flap areas

1976-10-04

1977-08-23

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220268, 220 89A, B65D 4132

Patent

active

040434818

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: 3912113 (1975-10-01), Peyser et al.
patent: 3912114 (1975-10-01), Morran et al.
patent: 3997076 (1976-12-01), Jordan

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