The barrel and screw are made of 38CrMoAlA, which is wearable, corrosion resistant after nitrogen treatment.

Two extruder feed to the same die head, reasonable design, compact structure.

Labyrinth air ring with even air output.

Friction rolling up device with torque motor can keep suitable tension, drawing in and rolling up in good order, easy to change roll.

Machine model	SJ-700-CT
Screw diameter (mm)	φ45+φ45
Screw L/D ratio	28:1
Max. screw speed (r/min)	100
Screw driving power (KW)	11+11
Max. film width (mm)	550
Film thickness (mm)	0.02—0.15
Max. wind-up speed (m/min)	60
Max. winding diameter (mm)	φ400
Max. output (Kg/h)	45
Total power (KW)	45
Machine dimension (m)	4.8x2.2x3.6
Machine net weight (t)	2.2