Punch, a semi-finished can, and a can manufactured with use of the said punch

A punch for drawing beverage metal cans comprising

• a cylindrical body with a separated region (1) forming a can sidewall having a diameter D1,
• a step (2), and
• a region (3) forming a thick wall in an upper part of the beverage can wherein the region (3) forming the thick wall starts from the step (2), and wherein a diameter D2 of the punch in the region (3) is variable and is smaller than the diameter D1 of the region (1) forming the can's sidewall, wherein:
• the region (3) forming a thick wall of the can has length smaller than 100 mm, the diameter D2 of the punch in the region-forming the thick wall of the can is in the range from 29.7 to 99.9 mm,
• the diameter D1 of the punch in the region-forming the can sidewall is in the range from 30 to 100 mm,
• the step has length (L2) from 0.1 to 40 mm, height from 1 to 500 μm, and an angle in relation to an axis of the punch from 1 to 80 degrees,
• the step (2) is disposed between the separated region (1) and the region (3),
• the region (3) forming a thick wall of the can comprises, in order, a first section (5) in which the diameter D2 increases, a second section (6) in which the diameter D2 decreases, and a third section (7) in which the diameter D2 is parallel to an axis of the punch, and
• the first section (5) is closer to the step (2) than the third section (7).