Tamper evident optically variable device and article...

Details Tamper evident optically variable device and article... Tamper evident optically variable device and article...

B - Operations, Transporting

65

D

206/1

B65D 55/02 (2006.01) B65D 55/06 (2006.01) G02B 5/28 (2006.01)

Patent

CA 1293706

Abstract Of the Disclosure Tamper evident optically variable device comprising an optically variable device having at least first and second layers with a spacer layer therebetween provid- ing a color shift with change in viewing angle. A release layer is disposed between the first and second layers to permit the first and second layers to be separated from each other and to thereby destroy the optical shifting properties of the optically variable device. A-43778

543837

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