PE film blowing machine with rotary die, film blower, plastic film machine SJ-55B PE film blowing machine with rotary die, film blower, plastic film ... or degradation film by adopting special raw materials.Specifications:Model: SJ-55B Screw diameter: 55mm screw L/D ratio ... by torque motor, with even and smooth rewinding and easy roll changing PE film blowing machine with rotary die, film blower, ...