Non woven masks are mainly composed of two layers of PP spunbond non-woven fabrics and one layer of meltblown non-woven fabric. They have good filtration and breathability, and are lightweight, waterproof, flexible and elastic. The middle layer can filter most particulate matter. The inner layer of the mask can absorb moisture from saliva or mucus, and the outer layer of PP has a waterproof function.
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