Industry Insights
Technical guides · Formulation best practices · Industry updates
Flexographic Ink Rheology: Viscosity Control, Doctoring, and Anilox Selection
Flexographic ink rheology governs deposit uniformity, dot gain, and run stability. This post details viscosity targets, temperature management, and additive selection to hit 25–55 cP at 100 s⁻¹ for solvent-based systems and 15–30 cP for water-based inks. Key topics include doctoring blade angle (60–80°), tension tuning, and anilox line screen selection aligned with substrate and solids transfer. Practical tables provide dosage ranges for rheology modifiers and comparative performance data to guide formulation and troubleshooting in high-speed coaters.
Offset Ink Formulation: Varnish, Pigment, and Additive Selection for Sheet-Fed and Web
Offset inks must balance pigment strength, drying speed, and end-use performance across sheet-fed and web processes. This technical guide details varnish selection (PMR vs. maleic resins), pigment choices (PY 13, PR 57:1, PB 15:3), and additive packages for tack, drying, and rub resistance. Includes dosage ranges, comparative tables, and troubleshooting insights. Data-driven guidance for formulators, R&D chemists, and procurement engineers.
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