PROCESS FOR MANUFACTURING A CAN WITH A POLYGONAL CROSS-SECTION AND A POLYGONAL CROSS-SECTION CAN

摘要

Process for manufacturing a can with a polygonal cross-section and a polygonal cross-section can, said process comprising the steps of: forming, from a metallic sheet, a tubular body (10) having a cylindrical lateral wall with a longitudinal seam (11); expanding the tubular body (10) of the can to the desired polygonal cross-section, by deforming the cylindrical lateral wall thereof, in order to define rounded longitudinal edges (12), matching with the flattened lateral wall portions (13); deforming the lateral wall portions (13), in order to provide them with a plurality of circumferential rib extensions (20), and with at least one longitudinal rib extension (40).