Why can non-woven electret masterbatches be linked to the production of masks? First of all, we have to make clear that the protective function of the mask mainly depends on the filter layer, and the main material of the filter layer is a very fine and electrostatic inner layer filter cloth—meltblown nonwoven fabric.

Meltblown non-woven filter principle:

The main material of meltblown non-woven fabric is polypropylene, which is an ultra-fine electrostatic fiber cloth that can capture dust. When the droplets containing pneumonia virus approach the meltblown nonwoven fabric, they will be electrostatically adsorbed on the surface of the nonwoven fabric and cannot penetrate. This is how this material isolates germs. After the dust is captured by the ultra-fine electrostatic fibers, it is extremely difficult to be detached by washing, and washing with water will also destroy the electrostatic suction capacity. Therefore this mask can only be used once.

What is non-woven electret masterbatch?

For medical masks, non-woven electret masterbatches and electret high-voltage electric-treated electret melt-blown cloths are the core part. Only after the electret treatment has a lot of charge on the melt-blown cloth is it also charged. The 0.3 micron non-oily small particles have an efficient adsorption effect, which is usually required to be greater than 95%. In fact, only professional instruments can test this.

The basic composition of non-woven electret masterbatch:

Polypropylene is used as the base material and special additives are used to make the additives evenly dispersed in the master batch. In the spinning process of the meltblown cloth, adding 2-5% can effectively increase the meltblown nonwoven The density and depth of the middle charge trapping energy trap can achieve the improvement of the comprehensive filtering efficiency and thermal attenuation resistance of the meltblown nonwoven fabric. Under the condition of the same fiber fineness and weight, it can reduce the resistance of non-woven products and improve the filtration efficiency of non-woven products.