Q1: What is UV ink?
A: UV (Ultraviolet) curing ink is a type of printing ink that solidifies through a photochemical reaction. When exposed to ultraviolet light, photoinitiators in the ink trigger polymerization, converting the liquid ink into a solid film within seconds. It contains very little volatile solvent and cures by "photochemical reaction" instead of "solvent evaporation or water drying."
Q2: What materials can be printed on?
A: Common substrates include PVC, ABS, acrylic (PMMA), polycarbonate (PC), coated metal plates, glass, wood, leather, paper, coated paper/film, and some untreated PE/PP (typically requiring corona, plasma, or primer treatment). It is suitable for both flexible and rigid materials depending on the formulation and printer model.
Q3: Which printheads are compatible?
A: Epson, Ricoh, Kyocera, Seiko, and Konica Minolta industrial printheads all have corresponding UV ink formulations. Compatibility mainly depends on viscosity, surface tension, filtration precision, and material compatibility with the printhead. Always use ink specified for your machine model.
Q4: How durable is UV-cured ink?
A: UV-cured ink is generally resistant to scratching, water, and solvent wiping. Weather resistance depends on outdoor-grade pigments, varnish systems, and protective coatings (such as clear coat or lamination). For outdoor applications, use UV-resistant pigments along with a clear coat or lamination for better durability.
Q5: How should UV ink be stored, and what is its shelf life?
A: Store the ink in a sealed, light-proof container between 5–30 °C, away from heat and strong UV exposure. White ink tends to settle and should be stirred or rolled regularly. The typical shelf life is 6–12 months (depending on manufacturer specifications).
Q6: Do you offer free samples?
A: Yes, free samples are available. Please contact us for more details.
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