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What are the differences in the materials of air efficiency filters

July 08,2023

At present, the medium efficiency air filter usually uses glass fiber or chemical Synthetic fiber filter material. Generally, the finer the fiber in the filter material, the more the fiber quantity, and the higher the filtration efficiency.

Theglass fiber bag filter materialis made of high-temperature melt blown material, and the fiber diameter can be as fine as 1 μ Below m. Glass fiber filter material, due to its dense fibers and relatively strong texture, can maintain a fluffy state during use, with high filtration efficiency and a relatively gentle increase in force. Therefore, glass fiber has always been an ideal and reliable filtering material for bag filters. Some manufacturers use melt blown chemical fiber filter materials with very fine fibers, which can achieve high filtration efficiency. However, due to its soft texture, it cannot maintain a fluffy state like glass fiber filter materials, and the force increases very quickly, with a service life less than half of that of glass fiber materials of the same specification.

During the manufacturing process ofchemical fiber non-woven fabrics, it is easy to naturally carry or add static electricity, resulting in electrostatic effects, which may result in good filtration efficiency in laboratory testing. However, in practical use, this kind of static electricity will disappear quickly due to the neutralization of charged particles in the air, and the efficiency will drop suddenly. If you test using a chemical fiber filter for a few weeks, you will find this, which is difficult for ordinary users to detect.

Glass fiber bag typeis generally used in high temperature environments and can withstand temperatures of 120 degrees, while ordinary chemical fiber bag type can only withstand temperatures of around 80 degrees.

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