Summary:
Sj-60 (70) single screw double die blowing unit is used to blow various plastic films such as low density polyethylene (LDPE), high density polyethylene (HDPE) and linear low density polyethylene (LLDPE). It is widely used in the packaging of food, clothing textiles, daily necessities and industrial products.
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Characteristic:
1. The machine adopts single screw rod extrusion, double touching heads for film discharge, and is equipped with double traction and double coiling devices, which has the characteristics of high yield and low consumption.
2. The screw and barrel are made of 38CrMoAlA alloy steel after nitriding treatment and precision processing, with high hardness, strong corrosion resistance and durability
3. The die head is plated with hard chromium, and its structure is spiral mandrel type. The extruded molten material is uniform, and the blown film has a good finish; The structure of the air cooling device is labyrinth type, and the air output is uniform.
4. The coiling device adopts pressure friction coiling, or central coiling, which is adjusted by torque motor, so the coiling is flat and easy to change.

model	screw diameter	film folding diameter (mm)	thickness of one side of film (mm)	screw speed (rpm)	aspect ratio	main motor power (kw)	heating power (kw)	output (kg/h)	overall dimension (mm)	machine weight (T)
SJ-60	60	100-500	0.005-0.05	10-120	28:1	18.5	15	40-60	6200 × three thousand × 3200	2.3
SJ-70	70	100-600	0.005-0.05	10-120	28:1

The quality and performance of the equipment continue to improve, and the appearance, technical parameters and characteristics of the machine are subject to change without notice