Metal bar code carrier - is of aluminium or aluminium alloy eloxadised black capable of being etched away by laser

摘要

The metal bar code label (2) receives bar codes (4), additional information (6) and fixing holes (8). The label (2) is made from either aluminium or an alloy of aluminium, with a dark, pref. black, top surface. Bar codes are effectively 'etched' by laser to reveal the bright surface beneath the top surface. The material can be aluminium alloy AU4G1T3 or 3.1364T3 with thickness of 0.8-2mm, with a stripe cooling of 3/9. ADVANTAGE - More robust.