What is the difference between disposable masks and medical masks

What is the difference between disposable masks and medical masks?

1. Different properties: disposable masks are made of two layers of 28 g non-woven fabric. Medical masks are mostly made of one or more layers of non-woven fabrics.

2. Different processes: The main production processes of medical masks include meltblown, spunbond, hot air or acupuncture, etc., which are equivalent to resisting liquids, filtering particulates and bacteria, and are medical protective textiles. Disposable three-layer masks are made of two layers of fiber non-woven fabrics, which are professionally used for medical treatment, with an additional layer in the middle that filters more than 99% of the filter bactericidal cloth and is ultrasonically welded.

3. The effect is different: under the condition of air flow (85 ± 2) L / min, the medical mask has a filtration efficiency of not less than 95% for the median diameter of aerodynamics (0.24 ± 0.06) μm sodium chloride aerosol, which is consistent with N95 (or FFP2) and above. Can block airborne infection factors <5μm in diameter or close contact with droplet-borne infection factors. Disposable masks do not.