Four filters commonly used in air filters

09/07/2020

1. pre-filteration media


In general filtration environment, it can completely replace the non-woven cloth and glass fiber covering coarse, medium and high efficiency of the whole series of filtration products, is a new filtering material, is also the future of the main development direction of filtration materials. Compared with other filtration materials of the same level, it has the advantages of low resistance, light weight, large capacity, environmental protection (incineration) and moderate price. The misty yesterfiber, or PET as the primary raw material, is made of polyethylene terephthalate, also known as synthetic or polyester. The specific gravity of polyester fiber is 1.38; The melting point is 255 ~ 260, and it starts to bond at 205. The safe ironing temperature is 135. Poor water absorption, only 0.4%; The breaking strength of filament was 4.5 ~ 5.5 g/d, and that of staple fiber was 3.5 ~ 5.5 g/d. The elongation at break of filament is 15 ~ 25% and staple fiber is 25 ~ 40%. High strength fiber can reach 7 ~ 8 g/denier, elongation 7.5 ~ 12.5%. Polyester has excellent wrinkle resistance, elasticity and dimensional stability, good electrical insulation performance, daylight resistance, friction resistance, no mold and moth, good chemical resistance, acid and alkali resistance. The industry name is: chemical fiber, chemical fiber has the big chemical fiber and the small chemical fiber, the big chemical fiber is to use the high quality PET chip production of dacron fiber. Small chemical fiber refers to the fiber produced by some small and medium-sized manufacturers with low quality recycled PET chips.

2.Non Woven Fabric


Scientific name polyester fiber, commonly known as non-woven fabrics, non-woven fabrics with extensive use, technical maturity, good stability and other technical characteristics, is China's primary, medium - effect plate, bag filter typical filter material. Compared with other filtration materials of the same grade, it has the advantages of stable quality, large dust capacity, strong moisture resistance, long service life and economic durability. Non-woven fabric is also the earliest filter material applied, with mature technology and low production cost. In recent years, due to the continuous development of technology, the appearance of composite non-woven fabric has greatly improved the image of cheap and low-grade non-woven fabric, and the efficiency has reached sub-high efficiency. At the same time, the composite non-woven filter material can also be used in the air cleanliness of the relatively high requirements of filtration.

3.paint stop fiberglass filter media

Paint stop fiberglass filter media is mainly made of glass fiber with different thickness and length by 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 fiberglass can do it. It is widely used in general ventilation system for primary filter, high temperature filter and high efficiency filter.

4.Activated carbon filter media

Activated carbon is designed to remove odors from the air. Activated carbon filter cotton refers to the synthetic fiber after leaching carbon and rubber treatment. Because activated carbon's job is to remove odors, filtration efficiency is not emphasized. In use. It is generally necessary to use separate primary and secondary filters.