FIELD: protective element and method for manufacturing it, forgery-protected paper and security with a similar protective element.
SUBSTANCE: protective element for forgery-protected paper, banknotes, identity cards or other analogical objects has base and at least two metallic layers positioned on it. Metallic layers have different characteristics of optical density.
EFFECT: claimed protective element has significantly higher forgery protection degree, due to easily and clearly discernible color effects and variable optical effects, which are impossible to imitate with simple technical means.
5 cl, 33 dwg
