Polypropylene spunbond non woven fabric, Non woven
2020-5-4 · Face mask materials are the base of qualified antiviral masks, For flat earloop 3 ply face masks, the raw materials are pp non-woven fabric (external and interior layer), melt-blown fabric as the middle filter material, nose wire, and earloops to get better facial fit. While for the KN95 face mask, more layers are applied, one or two meltblown fabric are added to achieve a better filtration efficiency, and …
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