Is PET a functional barrier?
Exaggerated worst case conditions have been applied by means of 4 different spiking procedures performed. The results show that the PET met/PE is a functional barrier for the chosen contaminants in realistic conditions.
What is a functional barrier?
Functional barriers are multilayer structures deemed to prevent migration of some chemicals released by food-contact materials into food.
What is the functional barrier doctrine?
A subset of the no migration exclusion is the “functional barrier doctrine.” Food contact substances that are separated from food by a functional barrier that prevents migration of those substances are not considered food additives.
What is the difference between direct and indirect food contact?
In addition, the FDA recognizes three types of food contact. Direct Contact substances are those that directly contact food. Substances that might come in contact with food, such as on the outside of food bag or carton, are defined as indirect contact.