First of all, the levels are different.
1, double-layer mask: Double-layer mask is made of two layers of non-woven fabrics.
2. Three-layer mask: The three-layer mask is made of two layers of non-woven fabrics specially used for medical care, and a layer of filter spray cloth with 99.999% filter and bacteria prevention is added in the middle, which is welded by ultrasonic wave.
Second, the use is different.
1, second-floor mask: second-floor mask is suitable for electronic factories and daily use.
2. Three-layer mask: Three-layer mask can be used in electronic manufacturing, dust-free workshop, catering service, food processing, school, motorcycle riding, spraying processing, stamping hardware, hospitals, beauty salons, pharmaceuticals, factories, environmental cleaning, electronics factories, steel mills, printing plants and other purposes.
Third, the advantages are different.
1, second floor mask: the second floor mask is light in texture; Very elastic and can be restored after stretching; The price is relatively low, which is suitable for mass production.
2, three-layer mask: three-layer mask is very breathable; Can filter toxic gases; Can keep warm; Can absorb water; Can be waterproof; It is flexible; Not unkempt; It feels very good and quite soft.
Baidu Encyclopedia-Disposable Mask
Baidu encyclopedia-three-layer non-woven mask