The process for producing polyethylene is long and involved. These steps include: Retrieving Crude Oil From the Ground Flash Distillation Separation to Obtain Ethane Converting Ethane to Ethylene Fractionation of Ethylene Polymerization to Obtain Polyethylene Extrusion Click on the highlighted words to view specific processes. If you would like to view the process step by step from the beginning to the end, click HERE.