The raw materials of masks are mainly composed of spunbond nonwoven materials, meltblown nonwoven materials, air-through nonwovens, needle-punched nonwoven materials, as well as accessories such as ear straps and nose bridge strips.
Among them, melt-blown nonwoven materials, as the core filter layer of masks, have the characteristics of fine fiber fineness (average fiber diameter 2~4 μm), small pore size, large specific surface area, and high porosity.
Children’s mask PTFE filter material is a new type of mask with a single-layer nano PTFE mask membrane as the core filter material. The fiber diameter of the membrane is between 100 and 200 nanometers, which can better prevent fine dust from entering the filter material. Things that have been used by them are still OK. If necessary, you can go into the store to inquire and purchase.
</p
