Tenax Simulant

Transfer Kinetics

Migration testing follows the movement of chemical components from the barrier coating into the tenax simulant under accelerated temperature conditions. Laboratory technicians spread a precise mass of the powder over the sample surface to cover the entire area without voids or excessive depth. The experimental design relies on fixed duration heating periods that mimic the shelf life of the actual packaged commodity.

Any detectable mass transfer from the base material into the simulant provides the quantitative data required for safety compliance. Scientists calculate the diffusion coefficients by measuring the concentration of the transferred substances after extraction from the polymer beads. Differences in the density of the fibre matrix influence the rate of movement and therefore dictate the total exposure limit.

High barrier integrity ensures that the internal components remain trapped within the substrate even when exposed to high heat.

Analytical Boundary

The simulation property stops applying when the temperature exceeds the melting point of the testing medium or the packaging material itself. Practitioners must account for the specific absorption capacity of the tenax simulant when reporting results from migration studies. Any chemical interference from the laboratory equipment alters the final concentration measurements and invalidates the protocol.

Standard methods establish the threshold for determining if a package meets the legal criteria for direct contact with fatty products. The result from the extraction test indicates the total concentration of chemical species migrating through the substrate.