In food packaging, safety and performance depend not only on the substrate, but on the thin functional layers of inks, coatings and adhesives.
As regulatory requirements tighten and hot-climate logistics increase migration risk in the GCC and wider MENA region, converters and brand owners are focusing more closely on process control, final-pack validation and supply-chain transparency.
In food packaging, compliance risk does not usually begin with the substrate. It often begins with the thin functional layers that are less visible but technically decisive — inks, coatings and adhesives. These layers influence safety, seal integrity, sensory performance and long-term durability.
As regulatory scrutiny intensifies and hot-climate logistics increase exposure risk across the GCC and wider MENA region, converters and brand owners are placing greater emphasis on process discipline, structure design and final-pack validation.
Compliance failures rarely have a single cause
Packaging safety depends not only on base materials but also on functional layers such as inks, coatings and adhesives. In the GCC and wider MENA region, stricter regulations and hot-climate logistics increase the risk of chemical migration. As a result, brand owners and converters are placing greater emphasis on process control, supply-chain transparency and final packaging validation.
When compliance failures occur, they rarely stem from a single error. Aykut Süzgün, Team Manager of Application Technology for Flexible Packaging EMEA at Siegwerk, explains: “These risks typically develop from a complex interaction between ink chemistry, process discipline, structural design, and storage conditions.”
Migration can occur through direct diffusion, gas-phase transfer or set-off between tightly wound reel layers. Lower molecular weight substances — including certain monomers, plasticizers and additives — are particularly mobile and must be carefully controlled.
Common issues in finished packaging include inadequate curing, residual solvents, exposure to high temperatures and permeation through non-barrier substrates. In addition, non-intentionally added substances (NIAS) arising from chemical breakdowns or secondary reactions require detailed product-specific risk assessment.
Structure design is part of risk control
A compliant ink system can still present risk if the packaging structure is not appropriate for its intended application. “Migration risk is strongly influenced by film thickness, barrier properties and print placement relative to the food-contact side,” says Süzgün.
Film selection for printing and lamination must therefore be considered an integral part of migration risk management.
In flexible packaging, reverse printing increases the diffusion path between ink and food, but this places greater emphasis on adhesive cure and laminate integrity. Seal zones require strict control.
Ink spreading into seal areas under heat can lead to weak seals or channel leaks, making defined no-ink zones and compatible material validation essential.
From a brand-owner perspective, compliance extends beyond legal migration limits.
Odour and taste taint can occur well below regulatory thresholds, affecting consumer perception even when laboratory values remain compliant.
Scuff and rub resistance also influence shelf performance, as abrasion can reduce gloss and colour density before the end of product life.
Regulatory discipline and documentation
Regulatory frameworks, particularly in Europe, continue to shape global practice. Food packaging inks must be manufactured under strict Good Manufacturing Practice (GMP) conditions, and migration behaviour must be optimised to prevent substance transfer that could pose risk or alter organoleptic properties.
Risk assessment of NIAS and non-listed substances forms part of structural compliance systems. Supply-chain transparency is supported by documentation such as Statements of Composition, enabling converters to evaluate potential migrants in food-contact materials. National measures including the Swiss and German Ink Ordinances have reinforced declaration and positive-list requirements.
At the same time, Design-for-Recycling criteria are influencing formulation choices, particularly for packaging placed on the EU market.
Hot-climate exposure increases risk
For converters operating in the GCC and wider MENA region, temperature is a defining variable. “In hot-climate regions such as the GCC, migration risk becomes significantly more critical,” says Süzgün.
Elevated temperatures accelerate molecular mobility, prolong cooling times and can re-mobilise solvent residues during storage and transport. Residual solvent remains a frequent root cause of migration and taint.
Increasing drying temperature alone is insufficient; effective solvent removal requires balanced airflow, dwell time and volatility control.
Preventive measures include adequate cooling before rewinding, controlled winding tension and defined storage temperature limits. Brand owners increasingly require validation under realistic heat conditions.
Declarations alone are not sufficient. Migration testing on the final finished pack, combined with organoleptic assessment of heat-aged samples, is now expected.
Final-pack validation is decisive
Compliance must be demonstrated on the finished pack. Supplier declarations referencing EU 1935/2004, FDA or equivalent regulations are necessary but must be supported by GMP certification, change control and documented testing. Migration testing using appropriate food simulants under defined time–temperature conditions, combined with organoleptic screening, ensures that safety, sensory quality and performance are verified within the converted structure.
In high-temperature markets such as MENA, process discipline and final-pack validation are not secondary safeguards — they are central to risk management.
Conclusion
Inks, coatings and adhesives impact safety, sensory quality, seal integrity and durability. Managing risk requires coordination between suppliers, converters and brand owners, backed by documented testing and quality systems.
