Method for manufacturing filter membrane for inhibiting microorganisms

A method for manufacturing a filter membrane for inhibiting microorganisms, comprising the following steps:

• (a) obtaining a nano-zinc precursor, and dissolving said nano-zinc precursor into water;
• (b) adding at least one reducing agent and at least one interfacial agent in said water dissolved with said nano-zinc precursor, thereby reducing zinc ions of said nano-zinc precursor to nano-zinc particles so as to form a liquid having nano-zinc particles;
• (c) respectively placing said liquid having nano-zinc particles and a polymer material into plastic masterbatch process equipment by means of melt grafting, respectively processing said liquid having nano-zinc particles and said polymer material to be in a volatile state with said plastic masterbatch process equipment, mixing and linking said volatilized liquid having nano-zinc particles with said volatilized polymer material in the process of air extraction, and adding at least one grafting agent to perform a mixed graft link so as to form a plastic masterbatch having nano-zinc particles;
• and
• (d) making said plastic masterbatch having nano-zinc particles into a filter membrane having nano-zinc particles through film making equipment.