The raw strip obtained from the casting process is pressed in the cylinders of the burnishing roll mill to be subject to a first process of 'refining' and to be transformed into a thinner and wider strip. This stage, the rolling, allows the distortion of the extruded product obtained in the continuous melting cycle, making it pass through the rotating cylinders, which lead to the reduction in thickness and consequently to the stretching of the metal. Generally, the thickness of the strip obtained through this process is of approx. 1 mm. The sheet is introduced in a second roll mill for finishing, a subsequent refining which allow obtaining heights of 0.25-0.30 mm. These dimensions are ideal for production as they allow having a 'consistent' metal and at the same time malleable and easy to be worked. Once the strip of the desired thickness is obtained, this is winded and cut longitudinally with automatic shears, machines which allow obtaining a ribbon of the height required for the next processing stages. « »