METHOD FOR PRODUCING POLYESTER RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a method for producing polyester resin composition capable of uniformly dispersing inorganic particles in the polyester resin free from existence of coarse particles. SOLUTION: The method comprises a first step heating the polyester resin into a molten state, a second step adding the inorganic particles to the polyester resin in molten state and a third step kneading the polyester resin in molten state and the inorganic particles, and is characterized by adding particles of a polyester resin having particle size passing JIS standard mesh >= No16 sieve together with the inorganic particle.