(also known as air conditioning primary filtration cotton or coarse filtration cotton) mainly includes paint room filtration cotton, paint room filtration cotton, primary filtration cotton, air inlet filtration cotton, canopy filtration cotton, high temperature filtration cotton, paint mist filtration cotton, etc., generally used for the primary filtration of air conditioning fresh air unitsAs a pre filter for high dust exposure in the air supply system, as well as a pre filter and flow equalization function for air supply in the spraying system and baking device, it has the characteristics of easy replacement and low cost.

Product characteristics of air filter cotton:

1. Composed of high-performance, fracture resistant silicon free synthetic fibers.

2. Utilize hierarchical encryption and multi-layer technology.

3. Meets the fire classification standards of European DIN53438-F1 and American UL900-class2.

4. Strong humidity resistance, capable of achieving 100% relative humidity resistance.

5. Temperature resistance up to 120 ℃.

6. Supply in rolls or slices.

Application of air filter cotton:

1. Suitable for coarse dust filtration, air filtration system pre filtration, and air conditioning system return air outlet filtration.

2. Suitable for various industrial purposes, such as pollution prevention, air conditioning industry, industrial waste gas, processing mist, etc.

3. Specially suitable for pre filtration in spray painting systems and spray painting workshops.

4. It can be processed into initial effect plate or initial effect bag filter according to customer needs.

The main categories of air filter cotton are:

1. Synthetic fiber filter cotton:

In general filtration environments, it can fully replace non-woven fabric and glass fiber to cover a full range of coarse, medium, and high-efficiency filtration products. It is an emerging filtration material and the main development direction of future filtration materials. Compared with other filter materials of the same level, it has the advantages of low resistance, light weight, large capacity, environmental friendliness (can be incinerated), and moderate price. The main raw material used is polyester fiber, abbreviated as PET. Polyester fiber is made of polyethylene terephthalate, also known as synthetic fiber or polyester.

The specific gravity of polyester fiber is 1.38; Melting point of 255-260 ℃, bonding begins at 205 ℃, safe ironing temperature is 135 ℃; Poor water absorption, only 0.4%; The breaking strength of long fibers is 4.5-5.5 grams per denier, while that of short fibers is 3.5-5.5 grams per denier; The elongation at break of long fibers is 15-25%, while that of short fibers is 25-40%; High strength fibers can have a strength of 7-8 grams per denier and an elongation of 7.5-12.5%. Polyester has excellent wrinkle resistance, elasticity, and dimensional stability, as well as good electrical insulation properties. It is resistant to sunlight, friction, mold, and decay, and has good resistance to chemical reagents. It can withstand weak acids and bases. The industry name is: synthetic fiber, which can be divided into large and small synthetic fibers. Large synthetic fiber refers to polyester fibers produced using high-quality PET chips. Small scale synthetic fibers refer to fibers produced by some small and medium-sized manufacturers using poor quality recycled materials to regenerate PET slices.

2. Non woven filter cotton:

Polyester fiber, commonly known as non-woven fabric, has technical characteristics such as wide applicability, mature technology, and good stability. It is a typical filter material for primary, medium efficiency plate, and bag filters in China. The manufacturing process involves multiple steps such as meltblown, needle punching, water jet, and spunbond, which provide advantages such as stable quality, large dust holding capacity, strong moisture resistance, long service life, and economic durability compared to other filter materials of the same level. Non woven fabric is also the earliest used filtering material, with mature technological development and low production costs. In recent years, due to the continuous advancement of technology, the emergence of composite non-woven fabric has greatly improved the image of non-woven fabric as a cheap and low-end material, and its efficiency has reached sub high efficiency. At the same time, composite non-woven fabric filter media can also be used for filtration in places with relatively high air cleanliness requirements.

3. Fiberglass filter cotton:

Fiberglass filter cotton is mainly made of various sizes and lengths of fiberglass through special processing techniques. Glass fiber is characterized by its stable performance, high temperature resistance, high efficiency, large capacity, and long service life. And in some special environments, only wave lines can handle it. Widely used in primary filters, high-temperature resistant filters, and high-efficiency filters for general ventilation systems, in places and environments with high requirements for air filtration.

4. Activated carbon filter cotton:

The characteristic of activated carbon is to remove odors from the air. Activated carbon filter cotton refers to synthetic fibers that have been treated with carbon impregnation and glue. Because the function of activated carbon is to remove odors, the filtration efficiency is not emphasized. In terms of usage. Generally, it is necessary to use independent primary and intermediate filters.

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