FIELD: chemistry.
SUBSTANCE: disclosed is a composite security device which is made up of a first polymer film that constitutes or embodies a security feature in form of at least one high value material, and a second polymer film that constitutes, embodies, or is coated with one or more additional security features. First polymer film is positioned on and adhered to a surface of second polymer film, which has a width or diameter greater than width or diameter of first polymer film.
EFFECT: by way of present invention, high value material is applied to only a part of security device, leaving remaining parts of device available for one or more additional materials that do not impact upon effect of high value material.
16 cl, 4 dwg
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|
RU2574969C2 |
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|
RU2621760C2 |
