Patent ID: 6802197
Filing Date: 2004-10-12
Classification: B21C,B21D,Y10S

Abstract:
A method for shaping a high strength container, and particularly an aluminum aerosol container, said method comprising:obtaining a disk having a given volume of malleable material and a surface; subjecting said surface of said disk to a surface treatment; placing said disk inside a die configured for extruding said disk; deforming said disk by impact pressing within a die to obtain a thin-walled hollow cylindrical body having a formed concave base projecting outside said body, a sidewall, and an upper circular mouth, said base and said sidewall comprising a uniform thickness throughout; and tapering said upper circular mouth to form a shoulder having a curl configured to affix a valve cover capable of closing said body, thus forming a container having a high resistance to internal pressure and comprising no material accumulations at the junction between said base and said side walls, but rather a homogenous material distribution.