Filter Material Classification For Filters

September 06, 2024

The primary hydraulic filter is mainly used for collecting 1-5μm particle dust and various suspended solids by filter element. It is widely used in various air conditioning equipment and air conditioning systems, and is also used for primary protection of multi-stage filtration systems. This series of products are plate type, folding type and bag type. The outer frame materials are: paper, aluminum alloy, galvanized steel plate, filter material: glass fiber filter cotton, activated carbon filter cotton, synthetic fiber filter cotton, non-woven filter cotton, etc. .

1. Glass fiber filter cotton:

Glass fiber filter cotton is mainly made of various thickness and length of glass fiber through special processing technology. Glass fiber is characterized by its stable performance, high temperature resistance, high efficiency, large capacity and long service life. And in some special circumstances, only the wave line can be competent. Widely used in general ventilation filters, high temperature filters and high efficiency filters for general ventilation systems, in places and environments where air filtration is required.

2, activated carbon filter cotton:

Activated carbon is characterized by the removal of odors from the air. Activated carbon filter cotton refers to synthetic fiber treated by carbon immersion and rubber. Because the role of activated carbon is to remove odor, the filtration efficiency is not emphasized. In use. Generally, it must be used in conjunction with independent primary and secondary efficiency filters.

3. Synthetic fiber filter cotton:

In the general filtration environment, it can replace the non-woven fabric and glass fiber to cover the whole series of coarse, medium and high-efficiency filtration products. It is an emerging filter material and the main development direction of future oil fliter materials. Compared with other filter materials of the same grade, it has the advantages of low resistance, light weight, large capacity, environmental protection (burnable) and moderate price. Polyester fibre is used as the main raw material, abbreviated as PET, polyester fiber is made of polyethylene terephthalate, also known as synthetic fiber or polyester. The specific gravity of the polyester fiber is 1.38; the melting point is 255 to 260 ° C, the bonding starts at 205 ° C, the safe ironing temperature is 135 ° C; the water absorption is poor, only 0.4%; the breaking strength of the filament is 4.5 to 5.5 g / denier , short fiber is 3.5 ~ 5.5 g / den; filament elongation at break is 15 ~ 25%, short fiber is 25 ~ 40%; high strength fiber strength can reach 7 ~ 8 g / den, elongation is 7.5 ~ 12.5%. Polyester has excellent wrinkle resistance, elasticity and dimensional stability, good electrical insulation properties, resistance to sunlight, friction, no mildew, good chemical resistance, and resistance to weak acids and weak bases. The industry is called chemical fiber, chemical fiber has large chemical fiber and small chemical fiber. Large chemical fiber refers to polyester fiber produced with high quality PET chips. Small chemical fiber refers to the fiber produced by some small and medium-sized manufacturers to regenerate PET chips with poor quality recycled materials.

4, non-woven filter cotton:

The scientific name polyester fiber, commonly known as non-woven fabric, non-woven fabric has the characteristics of wide use, mature technology, good stability, etc. It is a typical filter material for the initial and medium-effect plate type and bag filter in China. The manufacturing process is made by multiple processes such as meltblowing, needle punching, hydroentanglement and spunbonding. Compared with other filter materials of the same grade, it has stable quality, large dust holding capacity, strong moisture resistance, long service life and economy. Durable and other advantages. Non-woven fabrics are also the earliest filter materials, with mature technology and low production cost. In recent years, due to the continuous advancement of technology, the appearance of composite non-woven fabrics has greatly improved the image of cheap and low-grade non-woven fabrics, and has achieved efficiency in terms of efficiency. Efficient. At the same time, the composite non-woven filter material can also be used for oil filter filtration in places where air cleanliness is relatively high.