Propylene fiber is the lightest and easy to handle in synthetic fiber, with a temperature resistance of 90°C and excellent acid and alkali resistance. Therefore, it is applied to the field of gas-solid-liquid-solid separation where the temperature of the smoke is less than 100°C or where the acidity and alkalinity are strong.
In the field of liquid-solid separation, polypropylene needled filter mats are usually used with liquid-solid separation equipment such as plate and frame filter presses, vacuum suction filters, belt filters, and centrifugal filters. Not only has the characteristics of good dimensional stability, high strength, small elongation, and solid surface smooth, porous, high permeability, so it also has the unique advantages of low vacuum resistance, energy conservation, easy to clean and so on. In the industries of beneficiation, coal preparation, petroleum, chemical industry, etc., where it is necessary to filter tiny particles and ensure filtration, the polypropylene needled felt is far superior to traditional woven filter materials.
Polypropylene needle-punching filter mats are generally made of 2.5--6D polypropylene staple fiber as the surface layer, and the intermediate layer is made of polypropylene yarn or polypropylene high-strength filament woven base fabric, which is formed by acupuncture reinforcement and calendering, shaping and other post-treatment processes.
Polypropylene needled filter mats are mainly used in the liquid-solid separation fields of metallurgy, mining, petroleum, chemical, chemical fiber, pharmaceutical, and food industries.
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