Patent ID: 8323551
Filing Date: 2012-12-04
Classification: B29C,B29K,C08G

Abstract:
1. A process for producing a molded polyester resin article which process comprises molding a polyethylene terephthalate resin comprising uses, as starting material, a polyester resin mixture (c) with its moisture content adjusted to 60 to 300 ppm by weight, said mixture comprising, a polyester resin (a) having a moisture content of less than 60 ppm by weight and a polyester resin (b) other than the polyester resin (a) and having a moisture content of not less than 60 ppm by weight wherein the ratio of the polyester resin (a) to the polyester resin (b) is from >1 to ≦200 by resin weight, wherein the moisture content of the mixture (c) is a value calculated from the weighted means of the moisture content and the amount blended of the polyester resin (a) and the moisture content and the amount blended of the polyester resin (b), and wherein the article is molded using an injection or extrusion molding machine, wherein a mixture (c) is formed at a point between a material charging hopper attached to the molding machine and a material feeding section of a screw in the molding machine, and the temperature of the polyester resin (a) offered to the formation of the mixture (c) is not lower than 60° C. and not higher than 170° C.