Patent ID: 7395686
Filing Date: 2008-07-08
Classification: B21D,B65D,Y10S

Abstract:
1. A method of manufacturing a can body from an aluminum blank having a gauge thickness of 0.01075 inches or less, comprising the steps of: forming a cup from said blank; drawing and ironing said cup in a body former to form a can body, wherein said can body formed in said body former includes a bottom profile, said body former having tooling to form the following features in said bottom profile: a stand portion having an inner nose radius and an outer nose radius, a chime adjacent to said stand portion and having a chime length, a dome portion, and a dome corner radius R necking said can body; wherein the dimensions of said tooling forming said inner nose radius and outer nose radius, chime length, dome radii of curvature and dome corner radius are selected relative to each other so as to result in said can body meeting customer requirements for can bottom performance in terms of buckle, drop and growth and wherein subsequent to said drawing and ironing step no further bottom profile reforming process or apparatus is applied to said can body to provide further strengthening of the bottom profile of the can body in order to meet said requirements for can bottom performance.