Patent ID: 8485012

Claim:
A cold rolling method for manufacturing a profile ( 16 ) from a one-piece rolling stock in form of initial material ( 6 ; 56 ), comprising the steps of: providing a plurality of rolls ( 26 , 36 , 46 ; 66 , 76 , 86 ) each having a deforming region ( 28 , 38 , 48 ; 68 , 78 , 88 ) for deforming the initial material ( 6 ; 56 ); bending the initial material ( 6 ; 56 ) in a first direction with formation at least one upwardly extending folded section ( 8 ) extending in a rolling direction of the initial material ( 6 ; 56 ); and deforming the initial material ( 6 ; 56 ) in a width direction of the initial material ( 6 ; 56 ) with reduction of thickness thereof at least in one region, back-bending the folded section in a second direction opposite the first direction until the folded section ( 8 ) is flattened; further bending the folded section ( 8 ) from a flattened position thereof in the second direction, so that the folded section extends downwardly; and forming the initial material with the downwardly extending back bent folded section in a profile by further bending the folded section in the second direction.