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Single-screw Extruders

Extrusionstechnik Wiegard supplies single-screw extruders in line with your specifications with a variety of diameters and product-coordinated length-diameter ratios. We offer durable machines with a long life-span due to sound craftsmanship and the use of high quality components. The extruders can be ordered either complete with control or mounted on a terminal strip.

Our program comprises:

  · Standard - Extruders
  · Extruders for special applications
  · Custom extruders
  · Extruders with CMG Motor or High Torque Drive


Standard - Extruder Programm

  · Wiegard Extruder with smooth feed bush cylinder

ETGW EXTRUDER Screws
Ø [mm]
Screw revolution
[1/min]
Melting pressure
[bar]
Expulsion PVC
[kg/h]
Expulsion HDPE
[kg/h]
Expulsion LDPE
[kg/h]
ES20-25D
20
200
1000
10
7
7
ES30-25D
30
180
1000
30
23
15
ES40-25D
40
160
1000
40
28
23
ES50-25D
50
160
1000
120
85
80
ES60-25D
60
160
1000
200
150
140
ES70-27D
70
140
1000
250
190
190
ES80-27D
80
120
750
350
230
230
ES90-27D
90
110
750
380
260
260
ES100-27D
100
100
750
450
350
350


Extruders for Special applications

Extruders with grooved feed section
  · for higher throughput rate

Extruders for processing of fluorinated plastics
  · Cylinders made of powder-metallurgical materials or surface coated
  · Screws made of Inconel or Hastelloy with special coatings
  · Tailor-made accessories

Extruders with gas injection zone
  · Extruders with gas injection zone for the production of physically foamed products


Lab extruders with special functions upon customer request

These special extruders offer a multitude of advantages:


  · Realistic extrusion in lab format
  · Measuring in step with actual practice conditions
  · Quick and easy cleaning
  · Fast change of extrusion conditions
  · Measuring of rheologic characteristics
  · For R and D, to test of raw materials and products


Extruders with CMG Motor or High Torque Drive

Extruders with CMG Motor

In addition to our standard extruders with flat gearboxes we also offer our extruders with cooled compact geared motor Type CMG.

The new geared motor series CMG is an innovation when it comes to compact drives for injection moulding machines, extruders and applications which necessitate an enormous power density, an extremely compact gearbox with 4-fold tooth engagement.


Extruders with High Torque Drive

Short configuration and low-maintenance are the main advantages of this drive form.

The smaller size of the direct drive entails no output losses whatsoever. The more compact configuration is achieved by water cooling, which is available in extrusion lines anyway. This allows for easy integration of the High Torque Drives into the machine concept. The gearless motors yield high peak moments of up to 13,500 Nm at low speeds between 100-300 rpm. The water cooling allows a relatively quiet operation.

This configuration not only saves space, it also minimizes maintenance. Belt and gear drives are simply redundant.

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