| 摘要 |
PURPOSE:To prevent occurrence of stripes on a surface of a bottle which is oriented biaxially with a low stretching multiplying factor and treated with heat setting thereafter. CONSTITUTION:A blow cavity die 30 houses a heater 36. A hollow body molded by blow molding is stuck fast on a heated cavity face 38 and is treated with heat setting. On the cavity face 38, a composite plating coat layer 40 consisting of nickel coat in which fine particles of fluororesin are mixed in a way of eutectoid dispersion is formed. |
