PP

PP is an inexpensive, ductile, low strength material with reasonable outdoor performance. The material surface is soft wax-like and scratches easily.

Stiffness and strenght are often improved using reinforcement of glass, chalk or talc. The colour is opaque and white, but it can be dyed in many colours.

In many ways, PP is similar to HDPE, but it is stiffer and melts at 165-170 C. PP can be manufactured by all the methods used for thermoplastics.