发明名称 |
Secure data protection optically variable labels and foils |
摘要 |
An optical security label for security and anti-counterfeit applications comprises a first layer having an optically variable portion (diffractive, holographic or interference film) generating an optically variable effect secured to a support layer by a weak adhesive layer such that the first layer can be scratched off the third support layer to reveal underlying data and the label is affixed to a substrate by a pressure sensitive adhesive. The label or substrate carry the data to be protected such a printed or personalized paper or plastic substrate. In one aspect the scratch off region is patterned and also the data can comprise a pattern of alternate scratch off and permanent areas. In one aspect the label is a thin frangible structure delivered to the substrate with a weakly bound top carrier. In another aspect the optical variable device includes a covert image authenticated by a decoder carried on the top of the removable carrier. In one aspect the pressure sensitive adhesive is a curable adhesive to provide a permanent bond.
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申请公布号 |
US8562025(B2) |
申请公布日期 |
2013.10.22 |
申请号 |
US20030503432 |
申请日期 |
2003.02.05 |
申请人 |
DRINKWATER KENNETH JOHN;OPTAGLIO LIMITED |
发明人 |
DRINKWATER KENNETH JOHN |
分类号 |
B42D15/00;B42D15/02;B42D15/10 |
主分类号 |
B42D15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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