Ink and curing technologies are becoming central to the future of flexible packaging, as converters face rising pressure to deliver safer, more sustainable and more efficient printed packs. At FTA FORUM INFOFLEX 2026 in Milwaukee, experts from Siegwerk, GEW and Flint Group discussed how UV, LED, electron beam and low-migration ink systems are evolving to meet new demands from brands, regulators and packaging producers.

The session, titled “Innovating Next-Generation Inks for Safer, More Sustainable Packaging,” focused on a key shift in the role of packaging inks. Inks are no longer judged only by colour strength, adhesion or print quality. They must also support recyclability, food safety, lower emissions, energy efficiency and the broader sustainability strategy of the finished package.

Flexible packaging remains one of the most complex areas for ink development. Solvent-based and water-based systems still dominate many applications, but supply chain pressure, mono-material packaging, circularity requirements and new regulations are forcing printers to reconsider established choices. The future pressroom may use several ink and curing technologies depending on the product, substrate and compliance need.

In flexible packaging, the right ink system is becoming a strategic decision involving safety, sustainability, productivity and end-of-life performance.

One of the strongest themes was the renewed interest in UV technology for flexible packaging. UV curing has long been established in narrow-web label production, but it has historically seen lower adoption in mid-web and wide-web flexible packaging. Older UV arc systems created heat and air-handling challenges, particularly on central impression presses. However, newer LED curing, excimer technology, nitrogen inerting and improved measurement systems are changing the conversation.

UV formulations are typically 100% solids, meaning they do not require water or solvent carriers to evaporate. This can reduce energy demand, emissions and the need for drying equipment. For converters looking at Scope 1, 2 and 3 emissions, curing technology is becoming part of the sustainability calculation, not just a production choice.

• UV and LED curing can reduce drying requirements and improve press efficiency.
• Low-migration inks are essential for food-contact and sensitive packaging applications.
• Electron beam technology can offer significant energy and emissions advantages in selected structures.
• Excimer curing enables low-gloss matte finishes without traditional matting agents.

Speakers also challenged the assumption that water-based systems are always the most environmentally favourable option. Research comparing packaging constructions showed that UV and electron beam technologies can reduce CO2 emissions and energy consumption in certain applications. The conclusion was not that one technology fits every job, but that sustainability must be assessed through data, rather than simple material assumptions.

Food safety and migration were another major focus. Early UV adoption in flexible packaging faced setbacks linked to migration incidents in Europe. According to the speakers, these were not failures of UV as a technology, but failures of assumptions, formulation discipline and process control. Today’s low-migration UV systems use more advanced photoinitiator strategies, improved raw material selection and stronger regulatory understanding.

However, low migration is not achieved by ink alone. Press conditions, curing performance, substrate selection, handling, ink room procedures and workflow all influence final package safety. For converters, this means compliance must be managed as a complete process, with measurement and documentation supporting repeatability.

The operational benefits for printers are also significant. Because UV cures instantly, converters can reduce dependence on drying tunnels, shorten press configurations and move more quickly to finishing. This can reduce waste, simplify changeovers and improve productivity, especially where floor space is limited or where shorter runs require faster makeready.

Excimer curing adds another design opportunity. Matte flexible packaging has become popular in premium, natural and organic product categories, but traditional matte coatings can present viscosity and transfer challenges. Excimer systems can create low-gloss surfaces without relying on conventional matting agents, improving consistency during production.

The broader message from FTA FORUM INFOFLEX 2026 was that the ink room of the future will be more diverse. Solvent, water-based, UV, LED, EB and hybrid systems will each have roles depending on performance, regulation, substrate and sustainability objectives. Converters will need technical flexibility rather than relying on one chemistry for every application.

For flexible packaging producers, ink innovation is now directly connected to competitiveness. Brands want stronger graphics, safer food packaging, lower emissions and formats that work with recycling and mono-material strategies. As sustainability becomes a condition of doing business with major brand owners, inks and curing systems will play a larger role in how converters reduce waste, improve safety and deliver packaging that meets the next generation of market expectations