| Author(s) | Collection number | Pages | Download abstract | Download full text |
|---|---|---|---|---|
| Repeta V. B. | № 2 (88) | 11-18 |
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The development of new materials and the improvement of printing print varnishing technology from the point of view of increasing energy efficiency and operational indicators have opened up new opportunities for creating coatings with various functions on the surface of prints. In this work, based on previous studies, a predictive model of the effect of the viscosity of UV varnish and the surface energy of prints on the height of the created 3D structures was built. The model was implemented using the principles of fuzzy logic. Accordingly, universal sets were established for the factors as linguistic variables, fuzzy terms were set, and a fuzzy knowledge base was built. Defuzzification of fuzzy data was carried out according to the «Center of gravity» principle. The formed rules of the fuzzy knowledge base made it possible to build membership functions and, based on them, a graphic model of the influence of viscosity and surface energy on the height of 3D elements. The adequacy of the model was checked using the FIS-editor of the Matlab program and it was established that the viscosity of the UV varnish in the range of 13-14 Pa×s ensures the maximum height of 3D elements on the surface of the print with an energy of 40-42 mN/m. The obtained prognostic results reproduce the experimental observations, in which an increase in the viscosity of the varnish reduces the spreading rate and minimizes the effect of surface energy as a driving force in the process of liquid spreading..
Keywords: UV-varnishes, print finishing, 3D structure, augmented reality tag, predictive model, fuzzy logic.
doi: 10.32403/0554-4866-2024-2-88-11-18
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