The charge on the meltblown non-woven fabric will be lost with time, and the filtration efficiency of the non-woven product will be reduced, which is commonly referred to as the filtration efficiency decline.

The addition of Ruize non-woven electret masterbatches to meltblown non-woven products can increase the density and depth of charge traps in the melt-blown non-woven, and improve the filtration efficiency and resistance to thermal fading of the product. . The melt-blown non-woven products produced can reduce the resistance of the non-woven products and improve the filtration efficiency of the non-woven products under the same fiber fineness and the same gram weight.

The non-woven electret masterbatch increases the density of the charge trapping traps in the meltblown nonwoven fabric, so that the probability of the charge being captured by the meltblown cloth is increased under the same charging equipment and process conditions, and the charge of the obtained meltblown product is increased. The density is increased, thereby improving the filtration efficiency of the meltblown non-woven fabric product without increasing its resistance; while maintaining the filtration efficiency, the resistance of the non-woven fabric product is greatly reduced, and both of them are improved at the same time.

The non-woven electret masterbatch increases the depth of the charge trapping energy trap in the meltblown non-woven fabric, so that the trapped charge is in a lower energy state, making it difficult for the charge to escape from the trap or be neutralized during long-term storage. As a result, the stability of the charge of the melt-blown non-woven product is improved, and the decay of the electret charge is slowed down, so as to improve the performance of the melt-blown non-woven product against thermal decay.