Security element

Details Security element Security element

B - Operations, Transporting

42

D

B42D 15/00 (2006.01) B42D 15/10 (2006.01)

Patent

CA 2499279

The invention relates to an object of value with a security element having at least a first and a second liquid-crystalline material, the first material having thermochromic properties and the second material an optically variable effect.

L'invention concerne un article de valeur comportant un élément de sécurité contenant au moins un premier et un deuxième matériau cristallin liquide, ledit premier matériau présentant des propriétés thermochromes et ledit deuxième matériau présentant un effet optique variable.

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