Air filter cotton basic introduction

　　Air filter cotton is mainly used to filter dust particles in the air. Air filter cotton is divided into: non-woven fabric, synthetic fiber filter cotton, glass fiber filter cotton, activated carbon filter cotton, synthetic fiber high temperature filter cotton, etc. according to the difference of materials. According to the national standard (GB/T14295), air filter cotton can be divided into: initial (coarse) effect, medium efficiency, high efficiency, according to the European standard can be divided into: G1, G2, G3, G4, F5, F6, F7, F8.

　　The primary (coarse) filter cotton mainly filters dust particles larger than 5 μm, and is generally used for ventilation equipment and the air intake system as a place for direct or outdoor air contact such as pre-filtration or coarse filtration; also used for plate filters, folding Filter material for filter equipment such as plate filters and bag filters. Medium-effect filter cotton mainly filters dust particles larger than 1μm, which is generally used for secondary or final filtration after coarse filtration, and is also used for filter materials of plate filters.