Renowned water-based ink and UV ink manufacturer in China
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Water-Based and UV Ink FAQs


Water-Based Inks

Water-based inks are eco-friendly, emit very low VOCs, and are safe for food-contact applications. They are ideal for porous materials like paper, cardboard, and FSC-certified packaging.
Yes, StarColor offers specially formulated water-based inks that ensure strong adhesion to PE, PP, PET, and other polymer films when used with proper priming and pre-treatment.
Water-based inks have lower environmental impact, safer workplace conditions, and comply with stricter regulations. Solvent-based inks offer faster drying and stronger adhesion to non-porous substrates, but emit higher VOCs.
They are suitable for uncoated/coated paper, cardboard, corrugated board, tissue, and certain plastic films when pre-treated appropriately.
Yes, for high-speed lines hot-air or IR dryers are recommended to ensure quick drying and avoid set-off.
Use corona or plasma treatment on substrates, adjust ink viscosity, and ensure proper drying conditions to enhance adhesion.
Yes. StarColor’s high-quality water-based flexo inks are designed for high-speed press lines, offering good laydown, rub resistance, and fast drying.
Our inks typically have a pH between 7.5 and 9.0, which is optimal for color stability and plate/instrument durability.
Store between 5–30 °C, avoid freezing or direct sunlight, stir before use, and store in sealed containers.
Yes, they meet VOC, ROHS, REACH, and other environmental standards. Certificates are available upon request.

UV Inks and Varnishes

UV inks cure instantly under UV light via photopolymerization, offering glossy, durable prints without solvents. Water-based inks dry by evaporation and are more eco-friendly.
UV varnish provides instant curing, high gloss or matte finishes, excellent scratch and chemical resistance, and no drying time.
Yes—provided you use low-migration, food-safe UV inks. StarColor offers compliant UV inks that meet EU and FDA standards for indirect food contact.
UV inks adhere well to non-porous substrates like PET, PVC, BOPP, foil, and coated paper.
You need a UV lamp with the correct wavelength (typically 365–405 nm) and sufficient power density (up to 300 W/cm) for proper curing.
Low migration UV inks minimize residual monomers or photoinitiators, making them suitable for packaging food, pharmaceuticals, or sensitive products.
Yes, UV-cured films are generally hard and resist abrasion, alkalis, oils, and solvents better than water-based ones.
Store in opaque containers away from light, at 5–25 °C. Use within expiration dates and avoid direct UV exposure.
Approximately 6–12 months, depending on formulation and storage conditions. Check the date on the container.
Yes, we offer UV varnishes in various finishes: gloss, satin/matte, and specialty textured finishes like soft-touch or anti-slip.

Food Safety & Certifications

Yes. Our ink range includes food-grade and low-migration inks certified under FDA 21 CFR, EU 1935/2004, and tested under GMP.
Low migration inks are formulated to limit the transfer of ink components into food, ensuring safety for indirect contact packaging.
Our inks meet FDA 21 CFR, EU 10/2011, and EU Regulation 1935/2004, and comply with relevant FDA/EU migration standards.
Yes. We provide COA, MSDS, FDA declarations, and migration test reports upon request for each ink batch.
Yes, our low-migration ink portfolio meets stringent regulatory requirements for pharma and cosmetic packaging.
No. We ensure inks are free from heavy metals and restricted chemicals such as lead, mercury, cadmium, and SVHCs.
REACH SVHC compliance ensures our inks do not contain substances of very high concern, supporting product safety and legal conformity.
Yes. Our food-grade inks are formulated without BPA, phthalates, or other endocrine disruptors.
We follow national and international standards, including EU 10/2011, FDA migration testing methods, and ISO 2859 sampling protocols.
Direct contact inks require full compliance and migration testing. For indirect contact, low-migration inks with proper barrier layers are sufficient. Our technical team can assist with selection.

Need More Help?

If you can't find the answer you're looking for, please contact our technical team for personalized assistance.