| 摘要 |
PROBLEM TO BE SOLVED: To provide a blow molded product having pearl gloss fined-grained, having anisotropy, developing pearl gloss rich in a nimbus like change and extremely rich in decorative properties, having characteristics excellent in various physical properties such as ultraviolet barrier properties, gas barrier properties of oxygen or the like, heat resistance or the like, simply produced without requiring skill of a high order and having reutilization aptitude after recovery. SOLUTION: When a blow molded resin product is molded by successively subjecting a molding raw material of a blend consisting a polyethylene terephthalate resin and a polyethylene naphthalate resin to parison molding and blow molding, the interestrification ratio of the polyethylene terephthalate resin and the polyethylene naphthalate resin is adjusted to 3-30% to successively perform parison molding and blow molding. |
