Aluminum foil rolling process

An aluminum foil rolling process comprising the steps of:

• a) providing at least one first aluminum foil (1) and one second aluminum foil (2) each having a respective first face (3, 4) and a respective second face (5, 6);
• b) lubricating, at least partially, at least one face between said first face (3, 4) and said second face (5, 6) of at least one aluminum foil between said first aluminum foil (1) and said second aluminum foil (2), thereby obtaining at least one first lubricated face;
• c) coupling said first aluminum foil (1) with said second aluminum foil, so that said at least one first lubricated face is a contact face between said first aluminum foil and said second aluminum foil, thereby obtaining a coupled foil (9) having two outer faces;
• d) rolling said coupled foil (9) with reduction of the thickness of said coupled foil;
• e) lubricating, at least partially, at least one face between said two outer faces of said coupled foil (9), thereby obtaining a coupled foil having at least one second lubricated face (11);
• f) winding at least partially said coupled foil having at least one second lubricated face (11), obtaining an at least partially wound coupled foil (12) comprising n turns;
• g) partially separating said at least partially wound coupled foil by unwinding one of said first aluminum foil (1) and said second aluminum foil (2), at least of one turn, thereby obtaining an at least partially wound coupled foil (13) comprising an end portion (14) constituted by a respective portion of only one of said first aluminum foil (1) and said second aluminum foil (2);
• h) unwinding said at least partially wound coupled foil (13) thereby obtaining a coupled foil wherein said second lubricated face is a contact face between said first aluminum foil (1) and said second aluminum foil (2);
• i) rolling said coupled foil wherein said second lubricated face is a contact face between said first aluminum foil (1) and said second aluminum foil (2) thereby obtaining a coupled foil (15) with reduced thickness;
• and
• l) separating said coupled foil (15) with reduced thickness thereby obtaining a first aluminum foil with a first reduced thickness and a second aluminum foil with a second reduced thickness.