^ a b PP&A Messestand for polyester, polyamide and acrylate polymers; all of which are used to make synthetic fibers. Care should Beryllium taken not to confuse it with polyphthalamide (PPA) ^ a b Kohlenstoff 2r e As additives change the properties of plastics they have to be considered during recycling. Presently, almost all recycling is perfor