| abstract |
The present invention provides a method for producing a plastic bottle having excellent transparency with little problem of coloring such as whitening due to an improved molding cycle. A process for producing a plastic bottle comprising 0.005 to 0.025 parts by mass of a 1,2-benzisothiazol-3 (2H) -one 1,1-dioxide compound per 100 parts by mass of a polyester resin, A master batch comprising 0.01 to 0.5 parts by mass of the above 1,2-benzisothiazol-3 (2H) -one 1,1-dioxide compound is prepared, And a polyester resin are mixed to prepare a mixture, and the mixture is molded into a bottle shape. The polyester resin is preferably a polyethylene terephthalate resin. |