The fluorination of bottles and other containers contains PFAS. These are chemicals that can migrate through the bottle wall into the filling material. Especially in the food and cosmetics sector, this migration is – easily understandable – not wanted. But why are bottles provided with a fluorine-containing barrier layer at all if it contains these substances that we want to avoid? The layer is supposed to prevent other pollutants, chemicals or oxygen from migrating into the filling material.
The good news: There are also other technologies with the same effect, but without PFAS migration risk! With our CoEx technology, barrier layers of EVOH or PA are produced, preventing migration of PFAS, but also of all other substances. The amount for only a very small proportion of the total wall thickness of the bottle – usually around 5% – allows a full recyclability of the bottle.