Patent ID: 8753657

Claim:
A method of manufacturing an antibacterial resin composition comprising a polyethylene terephthalate resin as component (A), and a polybutylene terephthalate resin as component (B), and an antibacterial glass which elutes silver ions as a component (C), which is characterized by including the following first step (a) and the second step (b): (a) 5 to 40 pbw (parts by weight) of the antibacterial glass as a component (C) is added to 100 pbw of the polybutylene terephthalate resin as a component (B), mixed and dispersed to obtain a master batch as the first step, and (b) 0.5 to 25 pbw of the master batch is added to 100 pbw of the polyethylene terephthalate resin as a component (A), mixed and dispersed to obtain the antibacterial resin composition derived from a master batch comprising below as the second step: (A) a polyethylene terephthalate resin: 100 pbw (B) a polybutylene terephthalate resin: 0.5-25 pbw (C) an antibacterial glass: 0.1 to 10 pbw, wherein the number average molecular weight of the polyethylene terephthalate resin as the component (A) is set to be a value within the range of 10,000 to 80,000, and the number average molecular weight of the polybutylene terephthalate resin as the component (B) is set to be a value in the range of 10,000 to 50,000.