| Author(s) | Collection number | Pages | Download abstract | Download full text |
|---|---|---|---|---|
| Holyk Yu. M., Kukura V. V., Kukura Yu. A. | № 1 (56) | 53-60 |
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The influence of adhesive, wax and silicone additives in alcohol-soluble flexographic inks on the adhesion resistance of the ink layer, its resistance to dry and wet abrasion, to dry and wet squeezing, to scratches has been researched as well as the effects of these additives on the optical characteristics of printing imprints in the production and laboratory conditions.
As a result of the research, the optimum amounts of adhesive additives IAM / EtAc have been established, the introduction of which in the triadic inks of Poliroto/RDB (SunChemical) significantly improves the adhesion resistance of the imprint and increases the resistance of the imprints to dry and wet abrasion. The optimum amount of wax additive has been set, the introduction of which in the researched inks increases the resistance of the ink layer to scratches, dry and wet squeezing, and it also improves the gloss of the imprint. It has been established that the introduction of adhesive and wax additives into Polyroto/RDB inks does not significantly affect the optical density of the imprint – up to 5%. The research confirms the effectiveness of the application of silicone additives S1 and S2 to reduce the coefficient of friction of the ink layer and the optimal amounts of these additives have been set.
The obtained results allow to predict the influence of various additives in alcohol soluble flexographic inks on the printing technical and optical characteristics of the imprints, and, consequently, on the quality of finished products. These results can serve as a basis for a deeper analysis of the indicators of flexographic printing quality using the information technology.
The results of the experimental studies have made it possible to make real practical recommendations for optimizing the amount of additives in flexographic inks in accordance with the requirements of the technological process.
Keywords: flexography, alcohol-soluble inks, adhesive additive, wax additive, imprints, resistance of the ink layer, optical density.
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