The difference between PP melt blown electret material and co

　　The electret treatment of melt blown nonwovens is an important finishing technology to improve the filtration efficiency. The melt blown nonwovens after electret finishing have the advantages of high filtration efficiency and low filtration resistance, because of the long-lasting static electricity and the electrostatic effect. In addition to the filtration effect of 0.005-1mm solid dust particles, the electret melt blown nonwovens have a good blocking effect on aerosols, bacteria, cigarette smoke and various pollens in the atmosphere.

　　The melt blown nonwovens after electret finishing have the advantages of high filtration efficiency and low filtration resistance, because of the long-lasting static electricity and the electrostatic effect. In addition to the filtration effect of 0.005-1mm solid dust particles, the electret melt blown nonwovens have a good blocking effect on aerosols, bacteria, cigarette smoke and various pollens in the atmosphere. In the melt blown process, the fiber can be charged with a permanent static charge by means of the emitter on the spinning line. Polypropylene is an ideal material for making electret fiber because of its high resistivity, large injected charge capacity and small RF loss.