... HDPE, LDPE, LLDPE film blowing machine. 2. Double-head Feature: This machine is used for blowing Low-density polyethylene ... , etc.Performance and Characteristics: 1) The machine adopts single screw to extrude the material, ... changer 7) Up and down device 8) Double rewindingMain Technical Specification: ModelSJ-G 55SJ-G60SJ- ... L/D)28 : 128 : 128 : 1Screw Speed(r/min)10-11010-11010-110Film Thickness(mm) ...