| abstract |
Disclosed are: polyester fibers having excellent antibacterial properties, deodorizing properties, stain-proof properties and durability; a process for producing the polyester fibers; a cloth; a fiber product; and a polyester molded article. Polyester fibers, a cloth or a polyester molded article each comprising a polyester produced by the copolymerization of an ester-forming sulfonic acid metal salt compound and/or an ester-forming sulfonic acid phosphonium salt compound is treated with an acid, or a processing solution having a pH value of less than 7.0 is applied to the polyester fibers, the cloth or the polyester molded article, thereby adjusting the pH value of the polyester fibers, the cloth or the polyester molded article to a value less than 7.0. |