| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a crystalline thermoplastic resin molding which does not need the cost increase and change of compounding design of a raw material resin itself, can prevent the deterioration of transparency of the molding caused by external haze, and can improve the surface gloss and surface hardness of the molding and the molding improve in optical properties, etc., which is obtained by the method. SOLUTION: In the method for producing the crystalline thermoplastic resin molding in which the crystalline thermoplastic resin is molded through a plastication process, after the plastication process, a crystal nucleus forming agent is contacted with the surface of a molding precursor at a temperature equal to or above a temperature by 20 deg.C lower than a crystallization end temperature obtained from the intersection between the extended line of a base line on the lower temperature side of a crystallization peak where the crystalline thermoplastic resin is observed by DSC and a straight line of the inclination of an inclined curve at an inflection point which passes through the inflection point of the inclined curve on the lower temperature side of the crystallization peak. |
