Single Screw Extruders
Single Screw Extruders
C.W. Brabender® Laboratory Extruders are built to meet rigid manufacturing standards.
They must provide close test reproducibility in order to act as measuring heads to the Plasti-Corder® torque rheometer, a precision instrument.
Their output depends on testing variables such as:
• melt temperature • extrusion material
• screw and die design • rpm • pressure • feeding
Sixteen standard models include L/D ratios of 10:1, 15:1, 20:1, 25:1, and 30:1. Different models provide alternate methods of heating and cooling. Temperature regulation on each is performed by a corresponding Brabender® Control Console or Circulator System.
APPLICATIONS
• Laboratory Sample Preparation
• Polymer Throughput Studies
• Product Development
• Processability Studies
• Pressure Tests
• Extrusion Profiles
• Small Scale Production Processing
Technical Data
BARRELS
The 416 stainless steel, honed and nitrided barrels are manufactured in various L/D ratios. The extruders are equipped with two ports near the screw tip for either a transducer or a stock temperature thermocouple, and a rupture safety plug.
Barrels can be supplied with grooves for improved shearing and positive transport of material in the extruder. Other designs and alloys can be provided for special applications.
Screw
Diameter |
Screw
Torque |
Operating
Temperature |
PSI |
1/2" |
25 Nm (2,500 mg) |
400 °C |
10,000 |
3/4" |
120 Nm (12,000 mg) |
400 °C |
10,000 |
1-1/4" |
240 Nm (24,000 mg) |
400 °C |
10,000 |
L/D Ratio • Screw Design
| L/D Ratio |
Screw Design |
| 10:1, 15:1, 20:1, 25:1, 30:1 |
1:1 up to 5:1 Compression Ratio |
| 20:1, 25:1, 30:1 |
Metering Screw |
| 20:1, 25:1, 30:1 |
Single Stage Mixing Screw |
| 20:1, 25:1, 30:1 |
Dual Stage Mixing Screw |
| 20:1, 25:1, 30:1 |
Nylon Screw |
| 25:1, 30:1 |
* Venting Screw |
| 25:1, 30:1 |
* Venting/Mixing Screw |
* Also Available for 1-1/4” 20:1 L/D Ratio
Other mixing screw geometries available -- consult manufacturer.
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