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Extruders

An Extruder is a motor-driven screw inside a tube or barrel. Various raw materials, such as plastic compounds, are fed into the extruder. The outside of the barrel is a hollow jacket through which a hot fluid can be circulated in order to melt the material inside the barrel. The screw action moves the material through the barrel and helps blend it together. The plastic mixture is forced through a device on the end of the barrel that shapes the material into the desired form.

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extruders bucket art

For mixing, blending, shaping a variety of materials, Extruders are used in the manufacture of chemicals, blending materials for fibers, and producing plastics/rubbers to make products like straws and tubing.

Designing a thermal fluid system for an Extruder application requires the following process information:

  • The circulating pump for the HEAT system is based on the design of the barrel jacket, through which the heat transfer medium will flow.
  • If the flow rate and pressure drop through the barrel is not specified, a detailed design drawing can be used to determine the correct flow rate and pump design for the system.
  • The number and sizes of the jacket connection ports is important

The size of the extruder, heat up time required, and the amount of material processed per hour are important considerations in HEAT system design.

  • Screw
  • Kneader
  • Underwater Pelletizer
  • Spin Beam
  • Melt Cooler

The heat systems below provide indirect temperature control of various types of extruders. 

CLICK ON A SYSTEM FOR MORE INFORMATION ON DESIGN TEMPERATURES AND PRODUCT FEATURES TO MEET YOUR PROCESS REQUIREMENTS
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