The regulatory horizon

Regulation rarely arrives as a surprise. It arrives first as a restriction proposal, then as a retailer specification, then as a brand owner’s negative list, and only afterwards as law. The reformulation work is normally well advanced before the legal date is fixed, because the buyers move first. The useful question for a formulator is therefore not whether a substance will be restricted, but what property it was carrying, because that property does not disappear with the substance. Grease resistance, sterilisation resistance, sealing width, plasticity, opacity and heat stability all have to be rebuilt from other chemistry, and each rebuild moves something else. What follows is a plain account of six pressures and what each one costs on the line. Arctic’s range runs to over 550 products, and the bench work behind them is done at the technical centre and laboratory in Greater Noida. The regulatory position summarised here is a description of public instruments, not legal advice, and nothing on this page states that any Arctic product complies with any of them.

PFAS and the grease barrier

Side-chain fluorinated acrylates and fluorosurfactants were used in food-service board because they solved an awkward problem cheaply: they lowered surface energy enough to repel hot oil and grease at internal addition levels or very thin coat weights, without closing the sheet, so the board stayed convertible and could be repulped in a conventional stream. That route is closing on three fronts, which are worth keeping apart. National and state bans on intentionally added PFAS in food-service paper and board are in force in several jurisdictions. EU packaging legislation sets PFAS thresholds for food contact packaging. The broad PFAS restriction proposal lodged under REACH is still in evaluation and is not yet law, so it is a signal rather than an obligation. Buyers are not waiting for the last of these. The replacement is a film, not a surface effect: dispersion barrier coatings built on acrylic, styrene-acrylic and polyolefin dispersions, often with platelet fillers to lengthen the diffusion path. The honest trade-off is coat weight and everything that follows from it. Where a fluorochemical treatment worked at fractions of a gram per square metre, dispersion barriers are typically applied at around 5 to 15 g/m² dry, an industry-typical range offered for orientation and not a measurement of ours. That brings blocking risk in the reel, more cracking at the crease, and a printing surface that is now a polymer film rather than a treated fibre surface, so wetting, transfer and adhesion all have to be re-established. Repulpability has to be answered by test, not assumed, because a film good enough to stop grease can also resist defibring. Arcbar and Arcfibre work is set against those four criteria: grease resistance by kit test, crease performance after coating, block resistance in the reel, and repulping behaviour.

Bisphenol A and can linings

Epoxy-phenolic linings earned their place through process tolerance. They hold adhesion over a severely deformed wall, in drawn, drawn and redrawn and drawn and ironed bodies, they survive the forming and seaming that happen after cure, and in food cans they tolerate retort. The move to bisphenol A non-intent chemistry, driven by the European restriction on BPA in food contact materials with its staged transition periods and by brand owner policy running ahead of it, replaces that backbone with polyester, acrylic and polyolefin-dispersion systems. The replacement has to achieve four things at once: continuity of film over a deformed metal surface, resistance to hot fill and to retort water, flexibility through seaming without micro-cracking, and neutrality to product flavour. The trade-off is process width. Non-epoxy linings are generally less forgiving of cure variation and substrate cleanliness, and several are more sensitive to the aggressive end of the pack range: acid products, brine and sulphur-bearing foods. Adjacent materials move with them, because can-end sealants and foil lacquers sit in the same pack and face the same declaration questions. Arcseam and Arcfoil are developed against that pack context. The compliance position of a finished pack remains the converter’s and the brand owner’s to establish by testing and documentation, and nothing here should be read as a compliance statement about any Arctic product.

Mineral oil hydrocarbons: MOSH and MOAH

Mineral oil saturated hydrocarbons and mineral oil aromatic hydrocarbons are a contamination problem rather than an ingredient problem, and that is what makes them difficult. The two fractions are not equivalent. MOSH accumulate in tissue, while MOAH carry the sharper concern because that fraction can include polycyclic aromatic structures, which is why buying specifications are written hardest against MOAH. The dominant route is recycled fibre: mineral oil based offset inks printed on newsprint and packaging enter the recovered paper stream, survive the process and end up distributed through the finished board. From there the lower molecular weight fractions move, not only by direct contact but through the gas phase, across an air gap, into dry foods with high fat content or high surface area. Secondary routes exist, from set-off, from transport packaging and from batching oils on jute and hessian outer bags. The legal position is often overstated. At EU level there is no binding limit, only a Commission recommendation to monitor and agreed action levels used to withdraw product when MOAH is found, and Germany’s mineral oil ordinance has been in draft for years without adoption. Retailer specifications have run ahead of both, and have pushed three responses: mineral oil free ink formulation, a functional barrier inside the pack, and virgin fibre. Each has a cost. Removing mineral oil from an ink changes its setting and misting behaviour. A functional barrier, whether a coated layer or an inner bag, answers the migration route but complicates the recycling story, which is the opposite of the direction plastic waste rules are pushing. Choosing virgin fibre answers the question by leaving circularity behind. There is no free option, only a stated priority.

Phthalate plasticisers and PVC-free closure liners

A PVC plastisol liner is a well understood piece of engineering: the resin is hard, the plasticiser makes it compressible, and the compressed gasket seals against a glass or metal finish over a wide torque range and a long shelf life. Two separate legal tracks act on it and they are routinely confused. For articles in general, REACH restricts the classified phthalates DEHP, DBP, BBP and DIBP in plasticised material, and authorisation applies to their use. For food contact use the operative instrument is a different one: the EU plastics regulation and its 2023 amendment, which set specific migration limits and a group limit for the permitted phthalates, with gaskets in lids treated as a distinct case for many years. Quoting the articles restriction at a food contact liner question is a common and avoidable error. Brand owner policy against PVC in food packaging then takes away the resin as well as the plasticiser. Replacements are thermoplastic elastomer, polyolefin and EVA based compounds, with liner coatings formulated to sit on them. The replacement has to achieve seal integrity at a realistic application torque, removal torque that does not climb over shelf life, and for beverages an oxygen ingress rate through the gasket comparable to the plastisol it replaces. The trade-off is a narrower window. Non-PVC gaskets are generally more sensitive to finish geometry and capping alignment, and pasteurisation or hot fill can shift both seal and removal torque more than the old compound did. Arcliner work is judged on application torque, removal torque after accelerated ageing, and seal integrity after the thermal process the pack will actually see.

Heavy metals

The heavy metal pigments left the mainstream some time ago, but the pressure has changed character. Lead chromate and molybdate oranges, cadmium reds and hexavalent chromium passivation were removed because of the metals themselves. What remains is a declaration regime. The 100 ppm limit on the sum of lead, cadmium, mercury and hexavalent chromium, set in EU packaging legislation and mirrored in the toxics in packaging laws of many US states, applies to packaging and to each packaging component, which is why an ink, a varnish or a liner is in scope on its own and a trace contribution from a drier package, a filler or a recycled component has to be known rather than assumed. That limit is on total content, so the method is digestion and elemental analysis of the component. ISO 3856 and its parts answer a different question, the soluble metal content of a paint or varnish, and a soluble result should never be offered as evidence against a total content limit. Replacement colour comes from diarylide and benzimidazolone yellows, DPP and naphthol reds, bismuth vanadate where opacity matters most, and from non-chrome passivation on metal. Lightfastness is still graded on the blue wool scale, but for prints the method is ISO 12040; ISO 105-B02 defines the scale for textiles and is not the print procedure. The trade-off is plain. Organic replacements generally give lower opacity per unit cost, weaker hiding on metal, and in metal decorating a lower ceiling on heat stability through pinning and stoving ovens, which forces either heavier films or a rethink of the colour build. Diarylide yellows in particular are limited by their decomposition temperature. Cadmium red’s combination of heat stability, opacity and cleanliness has not been matched by organic chemistry at comparable cost.

India’s direction: plastic waste rules and EPR

India’s line of travel is set by the Plastic Waste Management Rules and the extended producer responsibility framework built on them: registration of producers, importers and brand owners, category-wise recycling obligations, phased minimum recycled content in rigid plastic packaging, prohibition of identified single-use items, and the wider pull towards packaging that can actually be recycled in a domestic stream. For a coatings and ink formulator the significant consequence is not the paperwork, it is the structural change underneath it. Multi-material laminates are being replaced by mono-material polyethylene and polypropylene structures, and a coating is often what carries the function the lost layer provided. That is a demanding brief, because the coating has to deliver barrier, sealing, slip and print receptivity while staying below the softening range of the film beneath it, and it has to survive reclaim without contaminating the recyclate. De-inkability and behaviour in the wash step become specifications rather than afterthoughts. The trade-off is that a mono-material structure narrows the thermal window at the same moment it asks the coating to do more, so barrier, sealing and slip have to be balanced against one another instead of optimised one at a time. Arcbar, Arcseal, Arcglide and Arcweb address different parts of that same balance.

What this changes on the bench

• Raw material substitution is no longer a like-for-like exercise. The property has to be rebuilt, usually at higher coat weight or with an added layer.
• Process windows narrow before they widen again. Non-epoxy linings, non-PVC gaskets and mono-material sealing all reduce tolerance to cure, torque and temperature variation, which puts a premium on batch-to-batch consistency. Arctic’s production line is built for that consistency.
• Test method matters more than claim. Grease resistance measured by the TAPPI T 559 kit test, adhesion by ISO 2409 cross-cut, rub by ASTM D5264, heat seal strength by ASTM F88 and water vapour transmission by ASTM F1249 are arguable numbers. “Improved resistance” is not. A method quoted without its conditions, substrate, specimen preparation, temperature and humidity, is not much better.
• Recyclability and repulpability are test results, not design intentions. Until a structure has been through the relevant protocol, the honest statement is that it has been designed for recycling, not that it is recyclable.
• Restrictions collide. A functional barrier that answers a migration route can worsen recyclability, and a recyclable mono-material structure can remove the barrier that was doing the work.
• Process figures quoted anywhere on this page, coat weights and temperature ranges alike, are industry-typical values offered for orientation. They are not Arctic measurements, specifications or guarantees, and nothing here states that any Arctic product complies with any regulation, standard or approval.