Plastic bottle manufacturing device and plastic bottle manufacturing method

A plastic bottle manufacturing device comprising:

• a preform heating part that heats a preform and that includes a plurality of heating bodies disposed in a longitudinal direction of the preform;
• a blow-molding part that molds a plastic bottle by blow-molding the preform heated by the preform heating part;
• a preform temperature measuring part that is provided between the preform heating part and the blow-molding part and that measures temperatures of the preform at a plurality of measurement points in the longitudinal direction of the preform;
• and
• a control unit that is connected to the preform temperature measuring part and that controls the preform heating part,
• wherein the plurality of measurement points are provided in correspondence with the plurality of heating bodies, and
• wherein the control unit controls an output of each heating body of the preform heating part based on an optimal temperature distribution at each measurement point of the preform that has been predetermined and an actually measured temperature distribution at each measurement point of the preform measured by the preform temperature measuring part.