Patent ID: 7781497

Claim:
An antibiotic method for processing a part of a refrigerator using a silver-based antibiotic substance, comprising the steps of: forming a preform of the part to have a thickness relatively smaller than that of a finished product of the part through an extrusion process; mixing 0.05 to 0.1% by weight of the silver-based antibiotic substance with a resin based on the total weight of the resin; and forming an antibiotic layer on a surface of the preform of the part using the resin with the antibiotic substance mixed therewith, wherein the silver-based antibiotic substance comprises 60 to 80% by weight of an oxide of Ag ions having diameters of several dozen to hundred nanometers, 10 to 20% by weight of zirconium phosphate, and 10 to 20% by weight of a zinc oxide.