METHODS OF PRODUCING SECURITY THREADS OR STRIPES Russian patent published in 2018 - IPC B42D15/00 

FIELD: means of ensuring safety.

SUBSTANCE: invention relates to the field of the protection of value documents and value commercial goods against counterfeit and illegal reproduction. In particular, the present invention relates to a process for producing security threads or stripes to be incorporated into or onto security documents and security documents with said security threads or stripes. Disclosed security threads or strips comprise a first plurality of magnetic or magnetizable pigment particles, oriented so as to follow a convex curvature when viewed from the side carrying the first hardened coating with a second hardened coating are at least partially jointly visible, and the second hardened coating comprising the second plurality of magnetic or magnetizable pigment particles, having an orientation following a concave curvature when viewed from the side of the security thread or stripe, where the first hardened coating and the second hardened coating are at least partially jointly visible so as to form a plural rolling bar effect.

EFFECT: protection of value documents and value commercial goods against counterfeit and illegal reproduction.

17 cl, 13 dwg, 1 tbl