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Two-stage Extruder for PVC Compounding

Extrusion granulation: The two-stage extruder consists of two parts. 
The first stage is a high-speed co-rotating twin-screw compounder
The second stage is a low-speed single-screw extruder. 
The two are arranged vertically and orthogonally to form a double-stage extruder,combining the advantages of co-rotating twin-screw and single-screw to complement each other.
It is especially suitable for the processing of heat-sensitive materials such as PVC.
 
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Processing steps



  1. High efficient twin-screw compounding


    twin-screw forced conveying, high-efficiency plasticizing mixing and shearing dispersion without die head backpressure reflux.stuck into the low speed low shear single screw cooling, stabilivolt extrusion, avoiding high shear of the twin-screw which caused high melting temp. materials decompose in the twin-screw head retention.


  2. Single-screw high-pressure extrusion


    finished material stuck into the low speed low shear single screw cooling, stabilivolt extrusion, avoiding high shear of the twin-screw which caused high melting temp. materials decompose in the twin-screw head retention.

The twin-screw processing temperature is 150~185°C, and the single-screw temperature is 130~165°C. The air-cooled grinding surface is hot-cut into pellets, and the pellets enter the silo through the cyclone separator and vibrating screen.



Customer project:


Name: JY72-180 two stage extruder

Output:500-800kg per hour


Higher efficiency and capacity

Widely used in kinds of heat-sensitive materials and high powder filling operation system, such as: PVC, XLPE, halogen-free flame retardant cable, shielding material, carbon black master batch, etc.


Gear box-self made

Torque rating grade: T/A3≤8 domestic standard major parts

New structure design and high precision grinding of hardened gear teeth to ensure the gear box long time high efficiency working.


Screw-self made

Screw element is with closely intermeshed design, block type and can be easily exchanged to suit different material.


Barrel-self made

Precision grade can reach to IT 6. It is benefit for energy reduction and block type design makes it possible for various combination.



Model

Twin-screw

Screw diameter (mm)

L/D

Main motor KW

Screw rpm

Output Kg/h

Single-screw

JY50/100

SHJ-50

50.5

32-68

27-45-55

500-800

100-300

SJ-100

100

7-20

18.5

60-86

JY50/150

HT-50

50.5

32-68

75-110

500-800

300-500

SJ-150

150

7-20

37-45

60-86

JY63/150

SHJ-63

62.4

32-68

55-75-90

500-800

200-500

SJ-150

150

7-20

37-45

60-86

JY63/180

HT-63

62.4

32-68

75-110

500-800

350-800

SJ-180

180

7-20

45-55

60-86

JY72/180

SHJ-72

71

32-68

200-280

500-800

400-800

SJ-180

180

7-20

45-55

60-86

JY72/200

HT-72

71

32-68

200-280

500-800

500-1200

SJ-200

200

7-20

55-75

60-86

JY92/200

SHJ-92

91

32-68

250-315

500-600

600-1200

SJ-200

200

7-20

55-75

60-86

JY92/250

HT-92

91

32-68

450-550

500-600

1500-2600

SJ250

250

7-20

110-132

60-86


  • Founded in 2004, 17+ Years Experience

  • Annual Production Capacity of 500 Sets

  • CE & ISO 9001 Certificates

  • 100% Parts are Self-made

  • Competitive Price & Best Customer Service

  • Fast Delivery

  • 12 months quality guarantee



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No.337 East Zhening Road, Zhetang Town, Lishui District, Nanjing city, Jiangsu Province, PR China
+86-025-57248891
+86-025-57248499