Method for producing an aluminium foil with integrated security features

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9649676
APP PUB NO 20150273547A1
SERIAL NO

14439367

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Abstract

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Method for producing an aluminum foil with integrated security features. An aluminum foil is rolled down to a thickness of less than 150 μm in a plurality of cold rolling passes, texturing that runs in the direction of rolling being induced simultaneously on both surface sides of the foil. In a final cold rolling pass, the foil is fed to a working roller pair, in which, on at least one roller surface, the relief-like surface structuring generated in the rolling direction by grinding was reduced on the basis of contrast and motif in a region of 10 to 50% relative to the average surface roughness to form a motif for a security feature that is transferred to the surface side of the foil facing the roller surface. The generated aluminum foil has a glossy appearance on both sides such that the security feature rises clearly due to its dull appearance.

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Patent Owner(s)

Patent OwnerAddress
CONSTANTIA TEICH GMBHMÜHLHOFEN 4 3205 WEINBURG 3205

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brunnthaller, Christof Amstetten, AT 1 3
Huber, Rainer St. Polten, AT 35 348
Kornfeld, Martin Klosterneuburg, AT 21 288
Nekula, Lambert Hofstetten, AT 22 452
Scharner, Engelbert Kilb, AT 4 7
Schedl, Adolf Lilienfeld, AT 21 271
Zuser, Wilhelm Hofstetten, AT 9 64

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