| 摘要 |
PURPOSE: To obtain a stable molded product uniform in both wall thickness and shade, useful as e.g. a container, by using a mixed resin containing additive- contg. resin pellets as feedstock to suppress crystallization due to the crystal- nucleating action of the additive. CONSTITUTION: (A) An additive-contg. resin pellets suppressed in the rate of crystallization are prepared in advance by incorporating (i) a noncrystalline resin or (ii) a resin lower in the rate of crystallization than polyethylene terephthalate resin (hereinafter, abbreviated to PET) or (iii) a resin composition with these resins as the chief raw material with (iv) additive particles. The component A is then blended with (B) PET resin to obtain a mixed resin which is used as feedstock. It is preferable that the surface of the component (iv) be coated with the component (i) (esp. a PET copolymer) or component (ii) or component (iii) and the resultant coated component (iv) be incorporated in the component B to prepare the feedstock. |
