LOW-SPREAD METAL ELONGATED BOTTLE AND PRODUCTION METHOD

摘要

A low-spread metal elongated bottle and its production method are described for reducing rejection rates associated with the production of metal bottles at high speeds. The elongated bottle includes a sheet metal formed body. The sheet metal has a low spread between a yield state corresponding to the yield stress of the sheet metal and an ultimate tensile state corresponding to the ultimate tensile stress of the sheet metal. The body further includes a concave bottom portion having a circular perimeter. A cylindrical portion extends from the circular perimeter of the bottom portion and has a uniform diameter. A neck portion extends from the cylindrical portion and has a tapered profile. The neck portion may include a threaded portion including threads exposed on the outer surface of the neck portion or an area for crimping of a crown.