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中文简体In the field of non-woven fabric production, the room temperature PTFE filter felt production line has won wide recognition and application with its unique technology and excellent product performance. PTFE, or polytetrafluoroethylene, has become an ideal choice for manufacturing high-performance filter materials with its excellent high temperature resistance, corrosion resistance and chemical resistance. However, high-quality raw materials alone are not enough to ensure the final performance of the filter felt. In the subsequent processing stage, processes such as high temperature shaping, singeing, calendering and coating play a vital role, which further improves the performance of PTFE filter felt and enables it to better meet the needs of the industrial filtration field.
High temperature shaping is one of the key links in the production process of PTFE filter felt. Under high temperature conditions, the fibers are more closely bonded and the fibers are more orderly arranged, thus ensuring the dimensional stability and structural integrity of the filter felt under high temperature conditions. This step not only enhances the mechanical strength of the filter felt, but also improves its temperature resistance, enabling it to maintain stable filtration efficiency in high temperature environments up to 250°C or even 300°C in an instant.
The realization of high temperature shaping depends on advanced heating equipment and precise temperature control systems. The heating equipment on the production line usually adopts electric heating or steam heating, which can quickly heat the filter felt to the required temperature. At the same time, the temperature control system can monitor and adjust the temperature of the heating equipment in real time to ensure that the filter felt is shaped at a constant temperature. This fine temperature control not only ensures the performance stability of the filter felt, but also avoids quality problems caused by too high or too low temperature.
Singeing is a key step to remove burrs and impurities on the fiber surface. During the production process of PTFE filter felt, some tiny burrs and impurities may remain on the fiber surface, which will not only affect the finish of the filter felt, but also reduce its filtration efficiency. Through the singeing treatment, the burrs and impurities on the fiber surface can be quickly removed by using heat sources such as high-temperature flames or lasers, making the surface of the filter felt smoother.
Singeing treatment equipment usually adopts an automated control system, which can accurately control the temperature and moving speed of the flame or laser to ensure the consistency and stability of the treatment effect. In addition, in order to avoid excessive damage to the filter felt, the singeing treatment equipment is also equipped with advanced sensors and monitoring systems, which can monitor and process parameters such as temperature, pressure and speed in real time to ensure the safety and reliability of the treatment process.
The calendering process is a key step to further improve the surface quality of PTFE filter felt. Through calendering, the filter felt can be flattened and compacted with high-pressure rollers to make its surface smoother and easier to clean and maintain. This step not only improves the aesthetics of the filter felt, but also enhances its wear resistance and durability.
Calendering equipment usually uses high-precision rollers and hydraulic systems, which can accurately control the pressure and temperature of the rollers to ensure the consistency and stability of the treatment effect. In addition, in order to avoid excessive compaction or damage to the filter felt, the calendering equipment is also equipped with advanced sensors and monitoring systems, which can monitor and process parameters such as pressure, temperature and speed in real time to ensure the safety and reliability of the treatment process.
Coating treatment is the final step to improve the filtration accuracy and corrosion resistance of PTFE filter felt. By covering the surface of the filter felt with a layer of microporous film, the penetration of fine particles can be further blocked and the filtration efficiency can be improved. This film also has excellent corrosion resistance, which can resist the erosion of various corrosive gases and extend the service life of the filter felt.
The coating treatment equipment usually adopts advanced spraying or dipping technology to evenly cover the microporous film on the surface of the filter felt. In order to ensure the consistency and stability of the coating effect, the coating equipment is also equipped with a precise control system and monitoring system, which can monitor and process parameters such as spraying amount, dipping time and temperature in real time. In addition, in order to avoid excessive damage to the filter felt or affect its air permeability, the coating treatment also requires strict control of the thickness and pore size of the film.
