| 摘要 |
PURPOSE:To obtain a molding having extremely high transparency by using a molding processing machine in which a surface of a member in contact with melt resin is processed by a method selected by specific three processes. CONSTITUTION:An annular olefin random copolymer pellet formed of copolymerizing ethylene and annular olefin represented by a formula I or II and having a softening temperature (TMA) of 70 deg.C or higher is melted and molded by a molding processing machine. In this case, the machine in which a part in contact with the resin is processed by one type of method selected from a group consisting of a hard chromium-plating process, a titanium carbide process, a titanium nitride process is used. Here, in the formula I, R<1>-R<18>, R<a>, R<b> are independently hydrogen atom, halogen atom or hydrocarbon group, the R<16>-R<18> may form monocyclic or polycyclic by bonding each other and the monocyclic or polycyclic may have a double bond. The R<15> and R<16> or the R<17> and R<18> may form alkylidene group. |
