These monomers are then polymerized into chains called polymers, or plastic resin, such as polyethylene and polypropylene, in their most basic forms. The major types of thermoplastics include polyethylene, polypropylene, polystyrene, polyester and a range of specialized engineering resins.

These injection moldable TPEs can be overmolded to polypropylene (PP) and come in a natural grade that can be easily colored.