SMS non woven fabric (Spunbond + Meltblown + Spunbond Nonwovens) is a composite non woven fabric, which is a composite product of spunbond and meltblown. It has the advantages of high strength, good filtering performance, no adhesive, and non-toxic. At present, it is mainly used in medical and health labor protection products such as surgical gowns, surgical caps, protective clothing, isolation gowns, etc. SMS non woven fabric is formed by irregularly staggering countless short fibers of the microbial barrier layer (melt blown layer) to form a non woven fabric with an equivalent pore diameter of less than 50 µm. The curved channels formed in this way can effectively hinder the passage of microorganisms and form an effective microorganism barrier.

The material component is fiber.

The full name of pp is polypropylene, and the Chinese name is polypropylene. NW is the abbreviation of nonwoven, which is non-woven or non woven. It is a non woven fabric formed by making fibers through airflow or mechanically forming a net, and then through spunlacing, needle punching, or hot rolling reinforcement, and finally after finishing. PPNW means non woven fabric made of pp fiber. Due to the nature of pp, the final performance of the cloth is high, but the hydrophilic performance is poor. Usually the process flow of ppnw is spinning into a net and hot rolling reinforcement. Generally, ppnw has a wide range of uses, such as packaging bags, surgical protective clothing, and industrial cloths.