Patent ID: 7444848

Claim:
A process for manufacturing self-reinforced metal sheets or shapes ( 9 ), comprising: guiding a strip of sheet metal through a gap formed between two work rollers in a roller milling process for rolling the sheet metal to a desired thickness, introducing through holes or perforations ( 7 ) in at least one area of the roller metal sheet ( 2 ) thus forming at least one perforated area ( 4 , 6 ) and at least one non-perforated area ( 5 ), and folding the at least one perforated area ( 4 , 6 ) onto the at least one non-perforated area ( 5 ) so that laminae are established with the non-perforated area closing off the through holes or perforations of the metal sheet, and roller deforming the laminae so that a new metal strip, sheet or shape ( 9 ) is formed.