A na-arụpụta masterbatch site n'ịkwado ihe na-egbochi nje nje (polyguanidine nnu) n'ime rọba site na polymerization na mgbanwe dị iche iche.Enwere ike ịme ihe nkiri antibacterial, bọọdụ na ngwaahịa rọba ndị ọzọ site n'ime ịgbakwunye masterbatch.E jiri ya tụnyere plastik antimicrobial inorganic (ọlaọcha, ọla kọpa, zinc oxide), ngwaahịa a nwere ngwa ngwa antimicrobial na mmetụta mgbochi dị mma na fungi na nje.