Control of cooling system of film blower
Release time：
2020-11-01
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The internal cooling control of the film blowing machine is an important link in the system of the film blowing machine. The principle is that the cooled air is pumped into the film bubble drawn from the film head by the fan, which plays a rapid cooling effect on the hot film bubble and improves the steady-state effect of the film (finish). The size of the film bubble can be controlled by changing the air volume, that is, the width of the film.
With the rapid development of rubber and plastic industry, the demand for plastic film products is increasing in all walks of life, and the demand for its quality is also getting higher and higher. The demand for plastic products is also being renovated, and the corresponding demand for thick film products has emerged. However, the thickness of the film is large. Only by the traditional external fan cooling method is not up to the cooling requirements of thick film, but also can not meet the accuracy requirements of uniform thickness of products, there are many drawbacks, such as: The membrane bubble is unstable, the temperature of the membrane bubble is high, the condensation line of the membrane bubble is high, the cooling effect is not good, the film is slow, the production is low, and the tensile and tearing strength of the membrane products is not high, so we must carry out internal cooling at the same time as the cooling of the external fan of the original membrane bubble, in order to overcome the above disadvantages. The internal cooling system of the membrane bubble can meet the requirements of quantitative, low temperature, constant pressure and dynamic balance of the internal medium. The whole set of mechanisms can be controlled accurately and reliably with good cooling effect.
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