Method for producing an aluminium film with integrated safety characteristics

摘要

#CMT# #/CMT# The surface sides (4'a,4'b) of aluminum foil (1,4') is arranged extending in rolling direction (5'a). A loose composite is formed in aluminum foil, and is supplied to work rolls. The supplied foil is fed to rolling surface and its average surface roughness is reduced to form motif for a security feature (6). The security feature is applied to surface of the roll-facing surface side (2a) of the aluminum foil, and loose composite and aluminum foil are separated. #CMT# : #/CMT# An independent claim is included for aluminum foil. #CMT#USE : #/CMT# Manufacturing method of aluminum foil (claimed) used in medical product. #CMT#ADVANTAGE : #/CMT# Since the security feature is applied to surface of the roll-facing surface side of aluminum foil, the thickness of the aluminum foil is reduced without additional work step. The cost of the aluminum foil is reduced and manufacturing complexity of the aluminum foil is reduced. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of the aluminum foil. (Drawing includes non-English language text) 1,4' : Aluminum foil 2a : Roll-facing surface side 4'a,4'b : Surface sides of aluminum foil 5'a : Rolling direction 6 : Security feature.