As for how high the temperature of the blown film machine should be, this question has always troubled most people who have just entered the blown film industry.
The so-called high-temperature film blowing machine is used for film blowing, which means that when the film blowing machine blows film, what is the temperature of the screw and packaging rod of the film blowing machine, as well as the mold head of the film blowing machine.
In fact, the blown film machine does not have a fixed operating temperature. In fact, the reason is very simple, that is, the temperature used by the blown film machine is related to the following aspects
1. Different raw materials have different temperature requirements.
2. The influence of different air temperatures in the blown film environment on the blown film temperature of the blown film machine.
Firstly, let's briefly introduce the different raw materials of the blown film machine and their effects on the different temperatures of the blown film machine?
Different raw materials mainly refer to the different formulas and properties of the raw material particles used in the blown film machine.
Different formulas refer to the different temperature requirements for different types of plastic blown film particles, so the temperature of the raw material should be comprehensively considered when blowing the film.
Different particle characteristics refer to the differences between high-pressure particles and low-pressure particles. For example, low-pressure particles have higher requirements for blown film temperature than high-pressure particles. Taking the convenience bag blown film machine as an example, when the convenience bag blown film machine blows film, low-pressure particles are generally used, and the heating temperature of the blown film machine is generally between 180 ℃ and 230 ℃.
In addition, the ambient temperature of the blown film machine also has different requirements for the temperature required for heating the blown film machine. The temperatures in Hebei, Henan, Shandong, Shanxi, Shaanxi and other places are lower than those in Inner Mongolia, Jilin, Liaoning, Heilongjiang and other places. This is the difference in temperature required for blown film machines due to the vast territory and large latitude span of our country.