Resolving Multi Layer Packaging Migration Non Conformance Liability in Food Contact Certification
Resolving multi layer migration liability requires linking batch trace numbers to accredited specific migration reports and contract indemnity clauses.
Food Contact Simulant
Chemical Medium
Standardized test liquids and solid adsorbents imitate the solvent characteristics of real foodstuffs during chemical migration assessments. Testing protocols apply a food contact simulant to paper and board packaging to measure substance transfer without the analytical interference of complex food matrices. Ethanol solutions at ten percent volume replicate aqueous foods, while modified polyphenylene oxide simulates dry fatty goods.
Standardized contact times and temperatures force potential migrants from packaging materials into the receptor medium. The classification system excludes non-contact secondary packaging layers that are separated by functional barrier coatings.
Extraction Kinetic
Temperature exposure accelerates the diffusion of volatile compounds, printing ink components and monomer residues from paperboard fibers. The chosen simulant penetrates accessible pores or surface coatings, dissolving transferable chemical species until thermodynamic equilibrium or standard test duration is reached. Analytical instruments measure the total dissolved mass in the fluid to determine overall migration limits.
Fatty food testing uses vegetable oil or synthetic solvent mixtures to mirror the aggressive absorption behaviour of oils and fats.
Substrate Limit
Porous paperboard structures without plastic lamination absorb liquid test fluids directly, causing swelling or structural disintegrations. Solid phase adsorbents replace liquid media when testing uncoated paperboards intended for dry food contact.