FIELD: protective facilities for securities. SUBSTANCE: method involves interlacing fiber of 5-30 denier for forming twist yarn; coloring twist yarn with color or pigment so as to produce fiber colored portions having different tints or colorless portion; drying colored twist yarn and cutting it for producing protective fibers in the form of staple fibers. Obtained fibers have tints and are used for manufacture of securities protected from counterfeit. EFFECT: simplified method and improved protection from counterfeit. 7 cl, 4 dwg
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