Standard Food Simulants for Paperboard Packaging Compliance Verification
Poly(2,6-diphenyl-p-phenylene oxide) replaces liquid simulants for paperboard, preventing fiber collapse during compliance migration testing.
Fatty Food Reduction Factor
Barrier Resistance
Chemical migration analysis quantifies the fatty food reduction factor to determine the efficacy of cellulose substrates against lipid penetration. This metric establishes the ratio between the oil absorption rate of a standard reference paper and the specific material under evaluation. Lower values indicate improved barrier performance during contact with greasy contents.
Migration Physics
Barrier coatings apply a synthetic or bio-based layer to block the molecular pathways available to triglyceride chains. These coatings fill surface pores that would otherwise allow lipids to move into the fibre matrix through capillary action. The effectiveness of the layer relies on pore geometry and the surface energy of the chemical treatment.
Consistent coating weights maintain stability during the conversion of reels into finished packaging. A thinner coating typically results in a higher score for lipid transmission when the substrate undergoes folding or scoring.
Compliance Metrics
Lab technicians calculate the score by measuring the mass transfer of synthetic oil across the substrate over a fixed interval. Standardized temperature and pressure conditions simulate the storage of baked or processed goods inside the wrapper. The procedure validates whether a paperboard remains suitable for direct food contact under regulatory safety protocols.
Material samples demonstrate varying levels of protection based on the density of the barrier treatment and the uniformity of the application process. High sensitivity in the analytical equipment ensures the detection of minute shifts in barrier integrity across a production run.