SMS is based on two spunbond production lines, a meltblown M production line. PP non-woven fabric is spunbond non-woven fabric, PP refers to the production of non-woven fabrics, polypropylene, the name of the product in China is polypropylene, so sometimes you will see polypropylene non-woven fabric, in fact, the same.
The spunbonded nonwoven fabric is a nonwoven fabric produced by S or SS. The process of spunbond production is different from the production process of meltblown M, and the molding is also different. S is spun forming, and melt blowing is injection molding. The materials used are also different, and the process temperatures are different.
This is not difficult to see the difference between SMS and PP.
