Paperboard Food Contact Declarations and Recycled Fiber Traceability
Food contact safety for recycled board requires functional barrier proof and complete chain of custody documentation down to invoice line items.
Food Contact Suitability
Compliance Standard
Chemical safety and sensory inertness represent the primary requirements for materials intended to touch consumable products directly. Attaining food contact suitability requires that paperboard does not transfer substances to food in quantities that endanger human health or bring about an unacceptable change in the composition of the food. Regulating bodies such as the US Food and Drug Administration and the European Union set specific limits for acceptable chemical transfer.
Material Selection
Manufacturing boards for direct contact requires virgin fibres or highly processed recycled stock to prevent contamination. When recycled fibres are used, potential contaminants like mineral oils from printing inks must be managed through barrier coatings. Processing aids and chemical additives used in the papermaking process must also be selected from pre-approved substance lists.
Tests for taint and odour are performed to confirm that the package does not alter the sensory properties of the food. Additionally, moisture and grease barriers are often applied to block the transport of substances from the paperboard to the food, ensuring that food contact suitability is maintained throughout the shelf life of the product.
Verification Method
Analytical protocols verify compliance through extraction testing and migration analysis using food simulants. Paperboard destined for food packaging undergoes these tests to simulate various storage conditions and temperatures over time. Since liquid foods pose a higher extraction risk than dry foods, the choice of simulant is matched to the specific application.
Compliance certification is required before any packaging board can be used in commercial food contact applications.