Shaped article of polyamide resin and production thereof

A method for producing a polyamide resin shaped article comprising (A) 92 to 99.7 mass % of a polyamide resin produced by polycondensation of a diamine component containing 70 mol % or more of m-xylylenediamine and a dicarboxylic acid component containing 70 mol % or more of a straight-chain, aliphatic α, ω-dicarboxylic acid having 4 to 12 carbon atoms, and (B) 8 to 0.3 mass % of a silicate prepared by treating a layered silicate with an organic swelling agent with the proviso that the mass percentages are based on a sum of the polyamide resin A and the silicate B, the method comprising:

• preliminarily melt-kneading 70 to 95 mass % of the polyamide resin A and 30 to 5 mass % of the silicate B, on the basis of a sum of the polyamide resin A and the silicate B, at 250 to 300° C. for a residence time of five minutes or shorter, thereby preparing a resin composition C;
• melt-kneading 3 to 40 mass % of the resin composition C and 97 to 60 mass % of the polyamide resin A, on the basis of a sum of the resin composition C and the polyamide resin A, at 245 to 290° C. for a residence time of 20 minutes or shorter at the time of producing the polyamide resin shaped article;
• and then
• shaping or molding the melt-kneaded product into the polyamide resin shaped article in which the silicate B is uniformly and finely dispersed throughout the polyamide resin A.