Invention Grant
US08322751B2 Security thread having an optically variable security feature 有权
安全线程具有光学可变的安全功能

Security thread having an optically variable security feature
Abstract:
Embodiments disclosed herein include such relating to security elements for embedment in security papers, value documents and the like, having a substrate foil having opposing first and second main surfaces, an optically variable security feature disposed on the first main surface and an adhesive layer applied to the second main surface. Further embodiments are disclosed including methods for manufacturing security elements, embodiments relating to security papers and value documents, and other embodiments.
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