Ink formula and process for improving gravure proofing production stability

By using water-based acrylic emulsion and polyurethane emulsion as binders, combined with silane coupling agent to modify calcium carbonate and a pneumatic stirring device, the problems of uneven coloring and poor stability of water-based gravure inks were solved, achieving color uniformity and production stability during the printing process, and improving the adhesion and durability of the inks.

CN122278259AActive Publication Date: 2026-06-26SHANDONG JINGGONG GRAVURE PLATE MAKING CO LTD
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Patent Information

Application Number
CN202610771752.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-06-26
Estimated Expiration
2046-06-01

AI Technical Summary

Technical Problem

Existing water-based gravure inks suffer from uneven coloring, poor production stability, and difficulty in controlling printing quality during the printing process, and there is a lack of systematic solutions.

Method used

Water-based acrylic emulsion and polyurethane emulsion are used as binders, combined with silane coupling agent-modified calcium carbonate as filler, and a pneumatic stirring device is used to improve the dispersibility of the ink. Temperature is controlled by a three-stage drying process, and printing process parameters are optimized.

Benefits of technology

It achieves uniform coloring and production stability during the printing process, improves ink adhesion and durability, ensures uniform and stable color of printed products, and is suitable for a variety of substrates.

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Abstract

The invention provides an ink formula and process for improving gravure proofing production stability, and relates to the technical field of printing. The ink formula provided by the invention comprises 60-70% of a binder, 10-18% of a pigment, 0.5-1% of a defoaming agent, 1.5-3% of a filler, 1-3% of an alcohol solvent and the balance of water, wherein the filler is silane coupling agent modified calcium carbonate; the binder is a water-based acrylic emulsion and a polyurethane emulsion in a mass ratio of (30-85): (15-70); the polyurethane emulsion is prepared from aliphatic diisocyanate, L-lysine diisocyanate and polyol, and a 3-methoxy-4-hydroxymandelic acid chain extender is introduced into the polyurethane emulsion. When the ink formula is used for printing, low production efficiency and production cost increase caused by repeated labor are avoided, stable intaglio printing production is realized, and a printed product is uniform and stable in color, high in adhesion fastness and good in durability.
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