Process adaptaion
Active packaging may require some level of adaptation at the stages of plastic extrusion, package fabrication, or when the pack is filled and sealed.
If the chemistry causing activity is inhibited by the presence of antioxidants, it may be necessary to control their addition more during extrusion.
Some additives would be unstable at extrusion temperatures(200-370C), and so it is likely that they will be applied to the packaging as internal coatings.
It has been reported recently that a flavor additive manufacturer in the US, ScentSational, has developed encapsulated food aromas in a form that does not degrade under normal plastics extrusion conditions