Why a Bonnot Extruder?

The Bonnot Company has been designing and manufacturing quality extruders and extruder equipment since 1891. We have a portfolio of extruder designs for food extrusion, chemical catalyst pellet extusion, rubber bale pelletizing or feeding compounding extruders, bulk butyl sealant handling and extruding into strips, benchtop laboratory extruderes and high volume extruders. We also offer vacuum extruders, pugmill feeders and customized extruder designs.

How does The Bonnot Company approach Extruder design?

Designing an extruder involves a combination of mechanical, thermal, and material considerations.

  1. Define Requirements:
    • Understand the material(s) to be processed.
    • Define the required throughput and processing temperature.
    • Consider the desired output shape and size.
  2. Select Extruder Type:
    • Choose from our exisiting library of single-screw extruder designs.
  3. Conduct Testing to Verify Mechanical Design:
    • Determine the screw geometry, including length, diameter, and pitch.
    • Design the barrel, considering material compatibility and thermal requirements.
    • Ensure proper heating and cooling mechanisms to control the temperature of the material during processing.
    • Select a motor and gearbox based on the required torque and speed.
  4. Material Handling:
    • Implement a feeding system that suits the material properties.
    • Consider whether the material requires pre-processing or conditioning before entering the extruder.
  5. Die Design:
    • Design the die or nozzle to achieve the desired shape and size of the extruded product.
    • Consider the die swell and drawdown characteristics of the material.
  6. Safety Features:
    • Implement safety features such as emergency stops, interlocks, and temperature sensors to prevent overheating.
  7. Instrumentation and Control:
    • Install sensors and instrumentation to monitor temperature, pressure, and other relevant parameters.
    • Implement a control system to regulate the extrusion process and ensure consistency.
  8. Testing and Optimization:
    • Conduct trials with different materials and operating conditions to optimize the extruder’s performance.
    • Fine-tune the design based on actual performance data.
  9. Documentation:
    • Document the extruder design, including drawings, specifications, and operating procedures.

Specific requirements and considerations may vary depending on the application and the material being processed. It’s essential to collaborate with Bonnot experts in materials science, mechanical engineering, and process engineering during the design process. Additionally, prototyping and testing are crucial to validate the design and make necessary adjustments.

Want to Prove it Out?

The Bonnot Company is pleased to offer FREE feasibility testing in our test facility. Come and take advantage of our comprehensive catalog of test equipment; different extruder designs, screw geometries, forming dies, temperature control options, mixers and material testing equipment.