Polypropylene is a form of plastic (Thermoplastic). Also, know as Polypropene. Polypropene plastic is used in various applications for its good chemical resistance and weldability. It is widely used in packaging for consumer products (Bottles, Carry bags), Polypropylene is occasionally recycled. And its disadvantage is it has high flammability.
Polypropylene has low density, high stiffness, heat resistance, chemical inertness, steam barrier properties, good transparency, good impact/rigidity balance, stretchability, easy to weld.