摘要：

A light-weight unitary can body for pressure packs, such as carbonated beverage containers, is produced from high tensile strength steel. Flat rolled container stock steel is double cold reduced without an intermediate anneal. This material is drawn and ironed, and a bottom profile is formed while the can body is mounted on the ironing mandrel. The bottom profile includes a rounded-bottom annular chime and recessed convex panel. Formation of the bottom profile breaks surface adhesion between the ironing mandrel and the interior of the can body facilitating removal of the can body. The open end of the can body is necked-in to accommodate a closure chime seam within the diameter of the main portion of the can body sidewall.

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