Increased strength for metal beverage closure through reforming

Details Increased strength for metal beverage closure through reforming Increased strength for metal beverage closure through reforming

B - Operations, Transporting

65

D

113/40, 190/71.1

B65D 43/14 (2006.01) B21D 51/44 (2006.01)

Patent

CA 1238873

Abstract of the Disclosure Metal beverage closures of increased strength may be produced by a reform process which requires the initial production of a non- standard shell having a reduced countersink radius and reduced panel height. The shell is reformed, preferably in the conversion pro- cess, to industry standard dimensions, with the reduced countersink radius being maintained. To provide adequate material in the curl portion of the closure for seaming, the initial shell is provided with a reduced chuckwall diameter which is then reformed to industry standard dimensions.

464054

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