Alufoil: functional & absolute barrier - scientific proof by FABES
The results of the study show that aluminium foil of a thickness of at least 6 micron is not only a functional barrier but even an absolute barrier in terms of food contact applications:
'Based on the theoretical evaluation of the experimental data, especially those obtained from permeation experiments performed at 100°C, it could be demonstrated for the laminates containing an Alufoil with a thickness of at least 6 µm that at 100°C the migration limit of10 ppb will not be exceeded before 30 hours.'
Such severe conditions would never be encountered in the use of a packaging material even under a worst case scenario. The experimental conditions therefore demonstrated unambiguously, and by the resulting scientific data, that an alufoil layer of at least 6µm thickness has to be considered an absolute barrier in terms of food contact applications.