Patent ID: 8841368

Claim:
A method for manufacturing a nonflammable polyester resin composition comprising: making a polymer mixture containing the following (A) to (E) components in a melted state, (A) a polyester resin of 40 to 80% by weight relative to the total amount of the composition, (B) a polycarbonate resin of 5 to 40% by weight relative to the total amount of the composition, (C) a rubbery polymer of 5 to 30% by weight relative to the total amount of the composition, (D) a polyphenylene sulfide resin and/or a phenol resin of 2 to 20% by weight relative to the total amount of the composition, and (E) a phosphorus-containing acid ester compound and/or a polyamide resin of 0.1 to 25% by weight relative to the total amount of the composition; and passing the melted polymer mixture through a space between two parallel faces, with a face-to-face distance x being set to 0.5 mm to 5 mm, two or more times, to produce the non-flammable polyester resin composition, wherein the space is immediately preceded by a reservoir and the reservoir has a cross sectional area greater than the space that the reservoir precedes and the melted polymer mixture passes directly from the reservoir to the space.