PP

Polypropylene (PP) - Has good chemical resistance, good fatigue resistance (integral hinge property), and good temperature resistance. The difficulty in forming PP is its narrow thermoforming temperature window, webbing too can be a problem. Because of the semi-crystalline nature of PP, post forming shrinkage rates are high . A filling such as talc can be used to improve these properties. Guide SG for standard grades 0.92.