PTFE material has the advantages of corrosion resistance, weather resistance, high and low temperature resistance, etc. It is widely used in important sectors such as petroleum, radio, electric machinery, chemical industry, etc., and has the reputation of “King of Plastics”! The preparation method of the polytetrafluoroethylene composite film is to naturally roll the expanded polytetrafluoroethylene film onto a roller, and then take it out to cool down naturally after heat treatment. The disadvantage of this method is that the metal roller cools down slowly, while the composite film cools down too quickly. During the cooling process, the air is filled into the PTFE composite film and then contacts the metal roller to expand due to heat. The composite film will bulge on the roller, resulting in a poor appearance of the composite film.
If the oven is used to cool down slowly, it will take a long time and a lot of energy, which is not conducive to sustainable production.
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