Security structure comprising a thermochromic element and a...

Details Security structure comprising a thermochromic element and a... Security structure comprising a thermochromic element and a...

D - Textiles, Paper

21

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D21H 21/48 (2006.01) B42D 15/10 (2006.01) G07D 7/12 (2006.01) G07D 7/20 (2006.01)

Patent

CA 2703169

The invention relates to a security structure (3) comprising: at least one photochromic layer (4) having at least one photochromic area (8) provided with at least one photochromic element, and at least one thermochromic layer (5) having at least one thermochromic area (9) provided with a thermochromic element, and at least partially covering the photochromic area (8).

La présente invention concerne une structure (3) de sécurité comportant : au moins une couche photochromique (4) présentant au moins une zone photochromique (8) comportant au moins un élément photochromique, au moins une couche thermo-chromique (5) présentant au moins une zone thermochromique (9) comportant un élément thermochromique, recouvrant au moins partiellement la zone photochromique (8).

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