Dual security feature

Details Dual security feature Dual security feature

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) D21H 21/30 (2006.01)

Patent

CA 2526138

The invention relates to a flat dual security mark comprising two different security elements, one of which can be checked in the visible spectral region and the other in the ultraviolet spectral region of the light. Said security mark comprises plate-type effect pigments and luminescent pigments in such a low concentration that the latter can be recognised as individual particles with the naked eye under the action of UV light. The invention also relates to a method for producing said security mark and to the use of the same.

L'invention concerne une marque de sécurité double et plane comprenant deux éléments de sécurité différents, dont un est contrôlable dans le domaine spectral visible et l'autre dans le domaine spectral ultraviolet de la lumière. Cette marque de sécurité contient des pigments à effets en forme de plaquettes et des pigments luminescents en concentration si faible que ces derniers sont reconnaissables comme particules individuelles à l'oeil nu sous l'effet des ultraviolets. La présente invention porte également sur un procédé pour produire et utiliser ladite marque de sécurité.

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