公开(公告)号：US09649676B2

公开(公告)日：2017-05-16

申请号：US14439367

申请日：2013-10-08

申请人： CONSTANTIA TEICH GMBH

发明人： Wilhelm Zuser ,  Adolf Schedl ,  Engelbert Scharner ,  Lambert Nekula ,  Martin Kornfeld ,  Rainer Huber ,  Christof Brunnthaller

IPC分类号： B21B1/22 ,  B21B1/40 ,  B21B27/00 ,  B21H8/00 ,  B42D25/324 ,  B42D25/425 ,  B44C1/24 ,  B21B27/10 ,  B21B3/00

CPC分类号： B21B1/40 ,  B21B1/227 ,  B21B27/005 ,  B21B27/10 ,  B21B2003/001 ,  B42D25/324 ,  B42D25/425 ,  B44C1/24 ,  Y10T428/12993 ,  Y10T428/24479

摘要： 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.