"> Abstract — In the process of polyethylene extrusion polymer material similar to powder or granule is under compression, meltingand transmission operation and on base of special form, extrudate hasbeen produced. Twin-screw extruders are applicable in industriesbecause of their high capacity. The powder mixing with chemicaladditives and melting with thermal and mechanical energy in threezones (feed, compression and metering zone) and because of gearpump and screw's pressure, convertin ...