Method for necking containers

Details Method for necking containers Method for necking containers

1992-09-30

1994-03-29

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72370, 72356, 413 1, B21D 2200

Patent

active

052974146

ABSTRACT:
A method of die-necking the open end of a can body to form a reduced diameter neck having a smooth profile comprising first forming a reduced diameter control neck at the open end of the sidewall of the can body, and then totally reforming the control neck and the adjacent portion of the sidewall to form a second reduced diameter neck. The diameter of the second neck is less than the diameter of the control neck, and the axial length of the second neck is substantially greater than the axial length of the control neck.

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