Apparatus and methods for manufacture of can end member

Details Apparatus and methods for manufacture of can end member Apparatus and methods for manufacture of can end member

1977-06-06

1979-05-15

Keenan, Michael J.

B21D 5144

Patent

active

041541847

ABSTRACT:
The method of manufacture of a container end member or the like with integral hinged opening tab means thereon having a formed severable tab portion, a formed connecting flange portion extending between the tab portion and the other part of the end member, and first and second formed score groove means located in juxtaposition between the tab portion and the connecting flange portion to provide a fracturable web portion therebetween, and the method comprising: first at least partially forming a central part of the tab portion before forming any other part of the tab means; thereafter initiating the forming of the connecting flange portion and partially forming the connecting flange portion before initiating the forming of any other part of the tab means other than the tab portion; and thereafter initiating the forming of the first and second score groove means and completing the forming of the first and second score groove means while completing the forming of the tab portion and the connecting flange portion.

REFERENCES:
patent: 2012213 (1935-08-01), Young
patent: 3397811 (1968-08-01), Lipske
patent: 3881630 (1975-05-01), Lovell et al.
patent: 3929251 (1975-12-01), Urmston
patent: 3946683 (1976-03-01), Jordan
patent: 3964414 (1976-06-01), Gane
patent: 4003494 (1977-01-01), Smith et al.
patent: 4027612 (1977-06-01), Herbst

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