Patent ID: 8627694

Claim:
A method for rounding single metal sheet sections to form single container body blanks comprising: feeding the single metal sheet sections from a stack to a rounding machine comprising a flexer station; measuring at least one sheet metal characteristic that influences a rounding of the single metal sheet sections; passing a value of the at least one sheet metal characteristic or a value derived therefrom to a controller of the rounding machine; and rounding the single metal sheet sections into the single container body blanks in the rounding machine, wherein the rounding machine is controlled based on the value of the at least one sheet metal characteristic or the value derived therefrom in such a way that a rounding diameter of the single container body blanks is held constant when the at least one metal sheet characteristic changes, wherein the at least one sheet metal characteristic is measured in a non-destructive way during the rounding of subsequent single metal sheet sections, wherein the at least one sheet metal characteristic is a rounding behaviour which is measured by a partial pre-rounding, and wherein the at least one sheet metal characteristic is measured in at least one of a feed section prior to entering the rounding machine, an entrance area of the rounding machine or the flexer station of the rounding machine.