The heating lamp in the preheater can be adjusted at any time according to the production needs of different types of preforms. When a certain type of preform is used for the first time, it must be adjusted to the appropriate voltage of each section.
The preforms are pre-heated and then test blown. Generally, the preforms do not turn white after preheating, but are in an elastic state. All parts of the blown bottle are uniform in soft and hard, and meet the blowing requirements as the standard. Then record the voltage data of each segment As the reference data for blowing this kind of preforms in the future, due to the variety of preforms and the different climate temperature differences in different places, it is difficult to have a standard data to provide, and we can only rely on finding suitable data in actual production.
