| 摘要 |
PROBLEM TO BE SOLVED: To reduce or omit temperature adjustment by a heater in blow molding of a preform. SOLUTION: The amount of heat transfer Qb' of a cavity mold 34 and the amount of heat transfer Qn' of a slide insert mold 36 in the compression molding die 33 of a preform are measured, and the heat transfer amount ratio Qn'/Qb' is monitored. No heating means is required in blow molding by monitoring the heat transfer amount ratio Qn'/Qb' so as to fall within a certain range. COPYRIGHT: (C)2012,JPO&INPIT |
