The main function of the outer layer of non-woven fabric is to prevent water and adsorption,
It is mainly made of spunbonded non-woven, spunbonded non-woven fabrics can be divided into the following categories:
1 S: spunbonded non-woven cloth = single layer of fiber net hot rolled.
2 SS: spun-viscose non-woven fabric + spun-viscose non-woven fabric = two layers of fiber net hot rolled.
3 SMS: spun-bonded non-woven fabric + fusion-sprayed non-woven fabric + spun-bonded non-woven fabric = three layers of fiber net hot rolled.
4 SMMS: spun-bonded nonwoven fabric + fusion-sprayed nonwoven fabric + fusion-sprayed nonwoven fabric + spun-bonded nonwoven fabric = four layers of fiber mesh hot rolled.
SMMS non-woven fabric belongs to composite non-woven fabric, which is a composite product of spunbond and melt spraying.Belongs to the SMS non - woven extension.