what is the specification of non-woven mask

What is the specification of non-woven mask? Masks are generally made of 15g, 20g, 25g and 30g PP non-woven fabrics. The conventional gram weight is 15g + 20g + 25g, and there are also 20g + 20g + 25g. Generally speaking, flat masks are divided into cotton masks, non-woven masks, polymer masks, activated carbon powder filter masks and activated carbon fiber felt masks. Size: 18 × 9 (adult), 15 × 9 (children)

specification of non-woven mask:

A) central part size of rectangular mask after deployment: length not less than 17cm, width not less than 17cm

b) the size of close fitting arch mask: the transverse diameter is not less than 14cm, and the longitudinal diameter is not less than 14cm

C) nose clip is made of bendable plastic material, and its length is not less than 8.5cm

d) the size of three-layer non-woven mask is 17.5mmx19.5mm

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