Aluminum alloy food can body and method for making same

Details Aluminum alloy food can body and method for making same Aluminum alloy food can body and method for making same

1983-03-14

1985-06-11

Gilden, Leon

Metal deforming

With 'coating' of work

72349, 220 70, 220 72, B21B 4500

Patent

active

045220492

ABSTRACT:
An aluminum alloy food can body and a method of forming the same whereby an uncoated high strength aluminum alloy sheet stock is blanked and drawn into a sized cup and redrawn by one or more redraws to form the sized can body. The end wall of the can body is formed into a pressure resistant profile, the side wall adjacent the open end is trimmed and outwardly flanged, a plurality of annular beads is formed in a central portion of the side wall, and at least the interior of the can body is coated with a material compatible with the food product to be packaged in the can. An end portion of the can side wall is ironed to reduce its thickness during at least one of the redraw operations.

REFERENCES:
patent: 3603275 (1971-09-01), Eickenhorst
patent: 3730383 (1973-05-01), Dunn et al.
patent: 3789649 (1974-02-01), Clowes
patent: 3807205 (1974-04-01), Vanderlaan
patent: 3855862 (1974-12-01), Moller
patent: 4040282 (1977-08-01), Saunders
patent: 4094760 (1978-06-01), Smith et al.
patent: 4120419 (1978-10-01), Saunders
patent: 4173882 (1979-11-01), Lee
patent: 4320848 (1982-03-01), Dye et al.

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