ABSTRACT High-density polyethylene(HDPE)is apolymer producedof repeatingethylenemonomer units with the chemical formula (C2H4)n. HDPE is produced through the polymerization process of ethylene, 1-butene, hydrogen, a Ziegler-Natta catalyst, and the addition of hexane as a solvent. Demand for HDPE in Indonesia continues to increase, but local HDPE production is insufficient to meet domestic dema…