中文The ink on a package may represent only a fraction of a percent of its total weight, but its influence on recyclability, regulatory compliance, and environmental footprint is disproportionate. As brand owners and converters navigate an increasingly complex regulatory landscape — with the EU’s PPWR, California’s SB 54, and India’s recycled content mandates all taking effect — ink formulation has emerged as one of the most important levers for making printed packaging more sustainable.
Bio-Based and Renewable Chemistries
The shift toward bio-based ink ingredients represents one of the most significant developments in packaging ink formulation. Traditional ink vehicles rely heavily on petrochemical-derived resins and solvents. The new generation of inks is incorporating renewable colorants, bio-based ingredients, and plant-oil-based formulations that reduce dependence on fossil feedstocks without sacrificing print performance. These chemistries are specifically engineered to perform on the growing volume of fibre-based, bio-based, and recyclable substrates entering the market, helping converters protect print quality as customers transition to more sustainable packaging.
Plant-oil-based inks, in particular, have demonstrated strong performance in enzyme-based deinking processes. This is a critical consideration for paper and board packaging, where effective ink removal during the recycling process determines whether the recovered fiber can be used in high-value applications or must be downgraded to lower-grade products. Inks that deink efficiently contribute directly to the circularity of paper-based packaging.
Low-VOC and Water-Based Systems
The drive to reduce volatile organic compound (VOC) emissions has accelerated the development of water-based and low-VOC ink systems. Modern water-based inks for corrugated and monochrome printing have advanced significantly, offering print quality and drying speeds that rival solvent-based alternatives. For converters operating in regions with strict air-quality regulations, the ability to switch to water-based or low-VOC systems without modifying press infrastructure or compromising throughput is a significant operational advantage.
Eco-solvents such as limonene and ethyl lactate are also gaining traction. These solvents, derived from renewable sources, help improve operator safety and reduce odor while meeting stricter air-quality standards. Bio-based ethanol, butanol, pinene, and methyl and ethyl soyate have been noted for excellent biodegradability, further reducing the environmental burden of packaging print.
PFAS-Free and Pollutant-Reduced Formulations
Many ink manufacturers are now removing per- and polyfluoroalkyl substances (PFAS) from new ink ranges to meet 2026 legislative deadlines. PFAS have been used in some ink formulations to provide oil and water resistance, but growing regulatory restrictions — particularly in food-contact applications — are forcing reformulation. Simultaneously, there is a move to eliminate persistent organic pollutants (POPs) from ink chemistries.
This proactive reformulation reduces compliance risk by meeting current and anticipated regulations, preempting the need for future ink reformulation, and assuring converters of long-term regulatory compatibility. For brand owners with global supply chains, specifying PFAS-free inks across all packaging suppliers simplifies compliance management and reduces the risk of regulatory action or reputational damage.
Energy-Efficient Curing and the UV LED Transition
Fast-drying aqueous ink systems are formulated to cure efficiently, reducing the number of drying modules required on press. This cuts the press footprint and lowers carbon emissions by reducing energy consumption. Ink systems optimized for UV LED curing represent another technology upgrade: LED curing reduces energy consumption compared to mercury-vapor lamps, eliminates mercury from the production environment, and provides safer, more stable curing with less heat generation — an important consideration for heat-sensitive substrates.
For converters, the combination of next-generation ink chemistries and energy-efficient curing means faster throughput, lower overheads, and improved sustainability scores. As brand owners increasingly require environmental performance data from their packaging supply chains, converters who have invested in sustainable ink technologies will have a measurable advantage in procurement processes.
The PFAS-free movement is one of the most rapidly developing trends in packaging ink formulation. PFAS — per- and polyfluoroalkyl substances — have been used in some specialty ink applications to provide oil and grease resistance, particularly in food-contact packaging such as fast-food wrappers, microwave popcorn bags, and pet food packaging. However, growing scientific evidence about the persistence of PFAS in the environment and their potential health effects has triggered regulatory restrictions across multiple jurisdictions. The EU has set thresholds for PFAS in food-contact packaging, and several US states have enacted or proposed PFAS bans in packaging materials.
For ink manufacturers, removing PFAS from formulations without compromising functional performance requires reformulation of the entire ink system, not simply the removal of one ingredient. The challenge is developing alternative chemistries that provide the required barrier properties while meeting the same printability, adhesion, and durability standards as the PFAS-containing formulations they replace. Ink manufacturers who complete this reformulation ahead of regulatory deadlines gain a first-mover advantage, as brand owners seeking to preempt regulatory risk will preferentially source PFAS-free inks — and, by extension, prefer converters who can supply PFAS-free printed packaging.
The design-for-recycling movement is also driving ink innovation. Primers that enable UV-cured inks to be removed more easily during the recycling process, and plant-oil-based inks that perform well in enzyme-based deinking, directly improve the quality of recycled material. Higher-quality recyclate commands higher prices in secondary material markets and enables closed-loop recycling — where a package is recycled back into packaging-grade material rather than being downcycled into lower-value products. For brand owners with ambitious recycled-content targets, the ability to specify inks that support high-quality recycling strengthens their ability to meet both regulatory requirements and consumer expectations.
Source: Print21, “Inks for more sustainable packaging print,” by Natasha Jeremic, Domino Printing Sciences, July 17, 2026.
