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Assessment of UV curing degree of the ink layer by residual unsaturation index in printing

Field of Science:Chemical EngineeringEngineeringIndustrial and Manufacturing Engineering
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O_TJ.2026.01.26_1be39203.pdf

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“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

“TEXTILE JOURNAL OF UZBEKISTAN” Scientific-technical journal

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The article discusses a methodology for assessing the degree of ultraviolet (UV) curing of the ink layer in flexographic printing on biodegradable polymer films. The relevance of the study is driven by the expanding use of environmentally friendly packaging materials and the need to ensure stable performance and printing characteristics of ink coatings. An approach to monitoring the completeness of UV curing based on the determination of the residual unsaturation index is proposed, allowing for the quantitative evaluation of photopolymerization processes within the ink layer. It is shown that the application of the proposed method enables real-time quality control of ink curing and optimization of the printing process parameters. The results obtained can be utilized in developing technological recommendations for the production of packaging using biodegradable materials, ensuring improved print quality and environmental safety. The minimum values of the DBI index were found in PE/TPC/PRO composition: 0.21 magenta and 0.25 cyan, which implies the highest level of photo-polymerization of both inks on this material.

AUTHORS

A.Джалилов

TOSHKENT TO'QIMACHILIK VA YENGIL SANOAT INSTITUTI

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# flexographic printing# ink curing# UV polymerization# DBI method# FTIR spectroscopy# PE TPK PRO

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