Extrusion for plastic film with Double Screw and One two layer die head

I. Main Technical

A: Extruder unit: total, 2 sets

1.Barrel and Screw

1. bi-metallic barrel and screw diameter: A45mm, 2 sets.
2. Screw L/D: 28:1
3. Structure: dowel and cover mixing
4. Material: 38CrMoA1A, with bi-metallic to saving the screw wear.

f. Process craft: Forging, quenching and high temperature tempering, nitirding.

2.Max screw speed:100r/min

3.Cooling the barrel on feeding zone.

4.Barrel use stainless steel of heater and 3 cooling blower.

5.Barrel heating zone: 3zone heating.

6.Speed Reduce Gear box:146#, 2set.           

a. Gear material: Alloy and Steel;

b. Main craft: high frequency quenching for gear surface, milling gear machine fine mill the hard gear surface;

c. Reducer box smooth method: enforce the oil loop smooth;

d. Gear box cooling method: enforce water loop cooling the temperature of oil;

7.Extruder main motor

a. Motor, total 2 set, motor power: 15KW×2sets.

b. With YASAKWA inverter, can independent and linkage adjust to the speed.

B: Die head 1 set 

1.Basic structure type:AB two-layers co-extrusion helical

2.Die head diameter:80mm,100mm. 

3.Heater of die head: Stainless steel mica heater.

4.Material: Alloy and Steel, forging and heat treatment.

5.Die head flowing plate hard chromium and buffing.

C. Double lip air ring, 1 set

a. Blower: High pressure and low noise; blower power: 2.2kw

b. With YASAKWA inverter.

D. Foam stabilizing frame 1 set

E. Take-up unit (Traction device)

1. Upper take-up device, 1 set

2. The second traction, 1 set(with rubber rolls, steel rolls and torque motor control)

3. Plywood device ( Tower),1 set

4.Traction rolls turn on/off type: driving by air cylinder

5.Traction motor:0.75kw,YASAKWA inverter.

F. Winding type: Constant tension control Single winding

1.Winding motor, 0.75kw,1 set, YASAKWA inverter.

2. Max film width: 600mm

3.Max roll diameter on the winding:800mm

G. Electrical equipment

1.Inverter: Yaskawa inverter

2.Temperature control device: RKC temperature control device.

3.A relay, contactor: Schneider / Omron

II. Features

The result is high Speed extrusion, best shearing and mix melting could make the plastic full plasticized. Also enhanced the film’s tension of horizontal and vertical. High output and strength of technology than others, is a really high speed blowing film machine.

1.Screw using the most advanced alloy spray technology, precision machining, hardness, corrosion resistance and better, long life, nitrogen treatment screw life 2 to 3 times.

2 screw length, plasticizing capacity, uniform temperature distribution, automatic temperature control, light blown film performance of uniform products;

3. compact structure, smooth operation, single-arm structure, economical and practical, the traction device integration and can self-tune movements;

4, using advanced inverter technology, energy efficient;

5, curled in various forms, can be arbitrarily chosen; 6, users can configure the rotating head.

III. Optional Equipment

1. Auto loader
2. IBC inner cooling fan
3. Upper rotary
4. Full auto winding unit
5. EPC Control device
6. Quickly manual Net-changing device
7. Corona treater

IV. Main technical veriable