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Single Screw Extruder  
 
Single Screw Extruder

Nanjing Gorray has developed single screw extruder with some new features, most of which are targeted for energy-saving, high productivity and easy control.

·Advanced screw design to optimize the output and keep melt at lower temperature;

·Overload protection by reliable flexible coupling;

·Accurate temperature control system;

·Convenient erection & adjustment

Single screw extruder is one of the core extrusion equipments in polymer processing and is also a key component in many other processing operations. The preliminary aim of a single screw extruder is to build pressure in the polymer melt. With sufficient pressure the melt can be extruded through a die or injected into a mold. A single screw extruder brings in solids in either pellet or powder form and melts them as well as building the pressure.

Thus a single screw extruder is widely used for direct extrusions such as sheet extrusion, film extrusion, pipe extrusion, tube extrusion and profile extrusion.

In some cases, those pro-water polymers such as PET, PMMA, PC need venting or vacuum. So a high efficiency venting system will be furnished. In plastic recycling process, venting of a single screw extruder turns out to be a necessity.

A single screw extruder can be a good match for twin screw extruder, which is herein referred to as dual stage extrusion line in Nanjing Gorray, a new experienced extruder supplier in China.

Single Screw Extruder

Specifications 

Model

Screw Diameter(mm)

L/D Ratio

RPM

Motor Power(kw)

Capacity (kg/h)

SJ20

20

28-32

150

3

3-10

SJ30

30

28-32

150

11

10-30

SJ45

45

28-32

120

22

50-80

SJ65

65

28-32

93

55

80-150

SJ90

90

28-32

93

90

100-350

SJ120

120

28-32

93

132

200-600

SJ150

150

28-32

75

220

400-800

SJ180

180

28-32

75

315

500-1000

SJ200

200

28-32

65

400

700-1500

SJ220

220

28-32

50

500

800-1800

SJ240

240

28-32

50

600

1000-2500

                                                          

 

                    Single Screw Extruder with Venting or/and Vacuum

Specifications

  Model

Screw Diameter (mm)

L/D Ratio

RPM

Motor Power(kw)

Capacity (kg/h)

SJP30

30

28-32

150

11

10-30

SJP45

45

28-32

120

30

30-60

SJP65

65

28-32

93

55

40-120

SJP90

90

28-32

93

90

120-280

SJP120

120

28-32

93

132

200-450

SJP150

150

28-32

75

220

400-600

 
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