Analytical Testing Protocols for Food Contact Paperboard Extractives and Migration Metrics
Extractives and migration testing requires matching food simulants, extraction solvents, and analytical thresholds to specific regulatory contact conditions.
EN 15586
Adhesion Protocol
Standardized procedures specify methods for measuring the adhesive strength of seals on flexible packaging materials. Practitioners use en 15586 to evaluate the peel resistance of laminates and heat-sealed layers. The method ensures that pouches and lids maintain integrity during transit while remaining accessible to the consumer.
Bond Assessment
Testing involves pulling a sealed specimen apart at a constant speed of 200 millimeters per minute. A load cell records the force required to separate the layers, providing a mean value across the width of the seal. This data helps manufacturers calibrate sealing temperatures and pressures for production runs.
Consistent results across different batches confirm the stability of the coating process and the reliability of the barrier. The resulting graph shows the peak force and the average force sustained during the separation of the two surfaces.
Performance Limit
Failures occur when the adhesive layer separates from the substrate or the substrate itself tears. The standard excludes materials where the bond strength exceeds the material strength. A fiber-tear result indicates that the seal is stronger than the internal bonds of the paper.
This outcome proves the effectiveness of the adhesive but prevents the calculation of a discrete peel value.