FIELD: chemistry.
SUBSTANCE: method of producing a polymer film with discrete luminescent dyeing for paper anti-falsification tools includes the steps of dyeing the polymer film material with fluorescent dyes. Hydrophilized polypropylene microporous membranes obtained by dry stretching are used as a polymeric film material. The film material is discreetly dyed with ink jet printing with aqueous fluorescent ink and laminated on both sides with thermally activated films at a temperature of 135°C.
EFFECT: improved method of producing polymer film materials for paper security, which eliminates the contact of paper pulp with a phosphor, provides high quality discrete dyeing and an increase in the life of protective tools.
1 dwg, 1 ex
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|---|---|---|---|
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