中文Sun Chemical has launched a next-generation SolarFlex FSP UV flexographic ink range aimed squarely at label and packaging converters under growing regulatory pressure. The upgraded formulation uses selected raw materials and low-migration chemistry to meet or surpass the requirements of the German Ink Ordinance (GIO) and the Swiss Ink Ordinance (SIO) — two of the strictest benchmarks in global food-packaging compliance, and increasingly the de facto global standard for safety-conscious brands that apply them well beyond Europe.
For converters and brand owners, the attraction is straightforward: demonstrate that printing materials meet evolving European requirements without sacrificing production efficiency or print quality. Food packaging is uniquely demanding because the risk of chemical migration, flavour transfer and odour contamination sits at the centre of every specification. Low-migration inks are no longer a differentiator; they are a precondition for supplying many European food, beverage and pharmaceutical brands, and a contract requirement written into supplier codes of conduct that procurements teams now audit routinely.
The SolarFlex FSP formulation combines low odour, low viscosity, fast curing and strong printability to support demanding flexographic environments. The range spans standard and intense four-colour process inks, expanded colour gamut options, and high-strength mono-pigmented blending colours — giving converters the flexibility to reproduce brand colours and hit different packaging specifications from a single, compliant system. That breadth matters because brand colour accuracy is non-negotiable, even when the underlying chemistry is being redesigned for safety, and because extended gamut printing reduces the number of fixed inks a converter must stock and wash up between jobs.
Sun Chemical reports that the inks have completed successful customer trials and validation programmes across Europe, including migration testing and odour assessments at press speeds above 200 metres per minute. Those results are significant: they suggest converters can pursue high-volume label and packaging production while still addressing the compliance requirements tied to food contact. Running low-migration chemistry at speed has historically been the hard part; formulations that cure cleanly and print consistently at line rate remove a major barrier to adoption and let converters chase the fastest flexo work without compliance trade-offs that previously forced slower running.
Jonathan Sexton, Product Manager for Energy Curing at Sun Chemical, said the upgraded range was developed to help converters and brand owners respond to stricter regulations while maintaining output and supporting sustainability objectives. For packaging printers, the formulation offers a way to prepare for evolving European requirements without giving up the productivity that UV flexographic printing is known for. The launch also reinforces Sun Chemical’s broader focus on low-migration ink systems for food applications, where material selection, process control and regulatory compliance are increasingly written directly into customer specifications rather than left to post-production testing.
The wider context is a regulatory wave reshaping ink chemistry across the continent. As authorities tighten limits on substances of concern and demand greater traceability, ink makers are re-engineering formulations from the raw-material level up. That work is invisible to the end consumer but central to brand risk management. A non-compliant ink can trigger recalls, reputational damage and lost contracts; a validated low-migration system becomes part of the brand’s defence. The German and Swiss ordinances in particular have become reference points because many multinational brands apply them to packaging sold well beyond Europe, exporting the standard worldwide and pulling their entire supply base up to it.
For the converter, the practical benefit is reduced complexity. Instead of maintaining separate compliant and non-compliant ink sets for different substrates and applications, a single validated range covering process, extended gamut and blending colours streamlines inventory and colour management. Faster curing also supports shorter lead times and lower energy per square metre — a sustainability gain that aligns with both regulation and customer expectations, and that helps converters hit their own Scope 3 reporting targets without renegotiating every job.
The competitive stakes are rising too. Sun Chemical is not alone: Flint Group, Siegwerk and other majors are all advancing low-migration portfolios, so the differentiator is increasingly the validation data and documentation a supplier can hand a converter. Printers should audit their ink inventory, request migration test certificates, and standardise on validated ranges before the next regulatory step lands. SolarFlex FSP’s arrival reflects a broader industry truth: in food packaging, ink is a regulated component of the safety case, and converters that can show validated, high-speed, low-migration performance will be best positioned as European requirements continue to tighten.
The migration-testing methodology behind these claims matters as much as the chemistry. Low-migration validation typically models worst-case conditions — high surface-area packs, fatty-food simulants and accelerated storage — to estimate how substances might transfer across a product’s shelf life. By publishing results from presses running above 200 m/min rather than a laboratory bench, Sun Chemical hands converters evidence they can take straight to a brand’s food-safety team, shortening the qualification cycle that often delays a new pack from pilot to production. For smaller printers without an in-house analytical lab, that documentation is the difference between winning a food contract and being locked out of it, and it shifts the burden of proof back to the ink maker where it belongs.
