EPR is normally manufactured in a continuous process in large reactors. The monomers, ethylene,
propylene and sometimes a diene (in the case of EPDM), along with the catalyst are metered
into the reactor and the polymerization takes place almost instantly at room temperature. After
polymerization, the polymer is cooled, dewatered, dried, cooled again and compressed into bales
[6]. The EPR polymer is now ready for compounding (#).