Types of air filter materials


    The air filter we mentioned in life is actually a combination of air filter material and outer frame. So, what kind of filter materials do air filter manufacturers use to produce filters?

    Let's take everyone to announce one by one!

    01 synthetic fiber

    Synthetic fiber filter cotton can fully replace non-woven fabrics and glass fiber covering primary, middle, and high-efficiency filter products in a general filtering environment. It is a new filter material and the main development direction of future filter materials. Using (polyester fiber) as the main raw material, abbreviated as: PET, polyester fiber is made of polyethylene terephthalate, also known as synthetic fiber or polyester. The industry name is chemical fiber. Chemical fiber is divided into large chemical fiber and small chemical fiber. Large chemical fiber refers to polyester fiber produced from high-quality PET chips; small chemical fiber refers to some small and medium-sized manufacturers regenerating PET chips from poor quality recycled materials. Fiber produced. Compared with the filter material of the same level, it has the advantages of small resistance, lightweight, large capacity, environmental protection, and moderate price.

    02 Non-woven fabric

    The scientific name of polyester fiber is commonly known as non-woven fabric. Non-woven fabric has technical characteristics such as wide use, technological maturity, and good stability. It is a typical filter material for primary and medium-efficiency plate and bag filters in my country. The manufacturing process is made by melt-blown, needle punch, spun lace, spun-bond, and other processes through multiple processes. Compared with other filters of the same level, it has stable quality, larger dust holding capacity, strong moisture resistance, long service life, economical durability Etc. Non-woven fabric is also the earliest application of filter material. The technology is mature and the production cost is low. 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 fabrics of low-cost and low-end products. Efficient. At the same time, the composite non-woven filter material can also be used for filtering in places where air cleanliness is relatively high.

    03 Glass fiber

    Glass fiber filter cotton is mainly made of glass fibers of various thicknesses and lengths 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 glass fiber can do the job. It is widely used in primary effect filters, high-temperature resistant filters and high-efficiency filters of general ventilation systems, and in places and environments that require high air filtration.

    04 Activated carbon

    Activated carbon can also be used as a filter material. The characteristic of activated carbon is to remove peculiar smell in the air. Activated carbon filter cotton refers to the synthetic fiber that has been soaked with carbon and glued. Because the role of activated carbon is to remove odors, the filtration efficiency is not emphasized. In use, it is generally used with independent primary and medium-efficiency filters.

    The above four are the filter cotton commonly used by filter manufacturers. Usually, the filter material used in the primary filter is primary cotton, which is also synthetic fiber filter cotton; the medium-efficiency filter generally uses non-woven fabric or glass fiber filter cotton; The filter materials used in high-efficiency filters are PP, glass fiber, PTFE, etc.