Coloration of polyester fibers for securities protection from falsification

Luminescence of polyester fibers colored by different luminophores using craising mechanism was investigated. Arrangement for interrupted modification of fibers by luminescent colorants was designed. Optimal thickness of fiber bundle ($90\div100$ fibers) subjected to modification was estimated. Effective fiber coloration takes place when the drawing out degree is between $2$ and $3$. It was shown that fibers modified by Oksasin and Rodamin are characterized by the highest intensity of luminescence in UV radiation.