| 摘要 |
PURPOSE:To easily obtain a transparent plastic molded form having excellent heat resistance by annealing resin composition in molds or annealing it after quenching it in the molds, and then heating it in heating molds to be crystal lized. CONSTITUTION:Resin composition containing 40-100 pts.wt. of at least one type of polybutylene terephthalate resin and 60-0 pts.wt. of at least one type of crystalline polyethylene terephthalate resin (excluding 100 pts.wt. of polybutylene terephthalate homopolymer) is injection molded, and cooled by molds to form a transparent molded form. Thereafter, the form is heated in molds which are regulated to be heated to a temperature of a cold crystallizing temperature or higher of the composition and lower than a melting point of the resin having lowest melting point of the resins. Thus, a plastic molded form which is transparent and has excellent heat resistance such as heating sterilization, hot filtering can be performed can easily be obtained. |
