I-masterbatch yenziwa ngokuxhunyelelwa i-agent ye-antimicrobial ephilayo (ityuwa ye-polyguanidine) kwiiplastiki ngezigaba ezininzi ze-polymerization kunye nokuguqulwa.Iifilimu ezilwa ne-antibacterial, iibhodi kunye nezinye iimveliso zeplastiki zingenziwa ngokufaka i-masterbatch yangaphakathi.Xa kuthelekiswa neeplastiki ze-antimicrobial ze-inorganic (isilivere, ithusi, i-zinc oxide), le mveliso inesantya esikhawulezayo se-antimicrobial kunye nefuthe elihle lokuthintela kwifungi kunye nentsholongwane.