filtration cloth with multiple filaments
Compound filament filter cloth as a new type of high-efficiency filter cloth. Conventional monofilament filter cloth is generally made of nylon (PA), polyester (PET), polypropylene (PP) and polyethylene (PE) monofilament weaving. However, conventional filter cloth has poor heat resistance and cannot be used for a long time at higher temperatures, has a very short life span, and is basically unusable at high temperatures of more than 180℃.
filtration cloth with multiple filamentsWith the characteristics of not easy to block, high strength, long service time, etc., it is mostly used in bag type, candle type filter machine, airtight filter machine, press machine and other equipments. Moreover, the compound silk filter cloth is shaped by high temperature, not easy to deform, and has high stability, and the service life can reach several times of the general filter cloth, which is well received by the majority of manufacturers using filter presses and praised.
Improvement of filament compoundingfilter clothThe service life of the filter cloth is extremely important for the efficiency of equipment operation and cost reduction, to be used for a long time at higher temperatures, the fibre material of the filter cloth can not be deteriorated in mechanical properties under high temperature conditions to prevent the filtration pressure drop increases, so it is necessary to choose the appropriate high temperature resistant monofilament filter cloth to prevent chemical erosion and physical damage. High-temperature-resistant compound filament means monofilament with the performance of being able to withstand high temperatures above 180°C. It can be used continuously without decomposition and retains its main physical properties.
With the progress of science and technology and the enhancement of people's awareness of environmental protection, the prevention and control of air pollution, especially waste incineration, metallurgy, iron and steel, power generation and other industries of high temperature soot filtration is attracting more and more attention. Compound filament filter cloth has the strongest resistance to clogging, in addition to the smooth surface of the fibres, the fundamental reason is that this filter cloth does not have fine pores between the fibres, the media pores of the pore size range is narrow. Compound filament filter cloth is to reduce the clogging of filter cloth, extend the filter cycle and improve the filtration index is one of the most effective measures.
Advantages of Filter Fabrics
1, compound silk synthetic fibre weaving, strong, not easy to block, there will be no yarn breakage.
2、Surface by heat-setting treatment, high stability, not easy to deform, uniform aperture.
3. Monofilament filter cloth with calendared surface, the surface is smooth, the filter cake is easy to peel off, and the filter cloth is easy to clean and regenerate.
The use of re-filament filter cloth can increase productivity, save costs, and bring more value to the business.
Industrial filter cloth performance indicators
| Performance | polyester | nylon | polypropylene fiber | (loanword) vinylon, synthetic fiber made from polyvinyl alcohol |
| Acid resistance | vigorous | mediocre | favourable | acid-intolerant |
| Alkali resistance | alkali-resistant | favourable | vigorous | alkali |
| Electrical conductivity | poorly | preferably | favourable | usual |
| elongation at break | 30%-40% | 18%-45% | Larger than polyester | 12%-25% |
| Resilience | an excellent | At 10%, above 90% | Slightly better than spandex | mediocre |
| Abrasion resistance | an excellent | an excellent | (of an unmarried couple) be close | preferably |
| Heat Resistance | 170 °C | 130 °C Slight shrinkage | 90 °C slight shrinkage | 100 °C Shrinkage |
| Softening point | 230 °C -240 °C | 180 °C | 140 °C -150 °C | 200 °C |
| Melting Point | 255 °C -265 °C | 210 °C -215 °C | 165 °C -170 °C | 220 °C |
Application of Compound Filter Cloth
In the field of filtration, there are environments that require filter cloths with high filtration speeds and long life. It is suitable for continuous production. Monofilament filter cloth has high strength and good dimensional stability, so the quality of filtration is easy to control; on the other hand, the surface of monofilament is smooth, so it is easy to peel off the filter residue to improve the continuous service life. At the same time, monofilament and staple fibre, compared with the filament, the specific surface area is small, and the contact area of the working material is small, which will be conducive to maintaining the resistance to chemicals and hydrolysis and other typical properties of certain polymers to reduce the environmental erosion of the filter cloth, improve the wear resistance of the filter cloth. Due to the synthetic compound silk fibre has toughness and memory function, repeated bending will not process hardening and fatigue; compared with the metal filter cloth, monofilament filter cloth can be bent or flattened and less damage, and the chemical stability of the metal wire cloth has limitations, so you can use the compound silk filter cloth to replace the metal wire cloth monofilament filter cloth than the metal wire cloth cost is also much lower, and the quality of the relatively lighter.
Compound filament filter cloth is mainly used in alumina, phosphate fertilizer industry, cement, smelting, chemical industry, chemical fibre and other continuous production environment, non-ferrous metals such as zinc oxide, cobalt oxide, alumina, potash, nickel and cobalt ore, manganese ore and other minerals Smelting, dyestuffs and chemicals, coal mining and other industries.
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