SMS non woven fabric (Spunbond + Meltblown + Spunbond Nonwovens) is a composite non woven fabric, which is a composite product of spunbond and meltblown. The raw material is polypropylene. 

Usually SMS fabric is with sesame dots on the surface of the fabric.It is with good tensile strength,breathable,good filtering performance, no adhesive, and non-toxic. 

SMS fabric (China medical sms non woven custom) is mainly used in medical and health labor protection products such as surgical gowns, surgical caps, protective clothing, isolation gowns, etc.

PP spunbond fabric (China polypropylene spunbond fabric supplier) is made by spunbond and hot-pressing technics.
And the raw material is also polypropylene. 

There are many different kinds pattern for the pp spunbond fabric (pp spunbond fabric vendor), such as rhombus,sesame, leaves, rose flowers, snowflakes,waves,stons,etc.

It is with good tensile strength,breathable, no adhesive, and non-toxic. 

Generally, pp spunbond nonwove has a wide range usage, such as packaging material, filtering material,surgical protective clothing, and industrial used,etc.

So, if you see the fabric is sesame pattern, maybe you can not distinguish whether it is sms or pp spunbond fabric.

SMS usually is laminated by 3 layers fabric.
PP spunbond fabric is only 1 layer.
Both of sms or pp spunbond fabric is waterproof and breathable.

But sms fabric is usually used more for medical field..

If you want to know more about them , please contact us.