^ 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 kreisdurchmesser eWhile most plastics are produced from petrochemicals, bioplastics are made substantially from renewable plant materials lik