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Extrusion systems

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7-component blending system

Features

A gravimetric blender can be used as a stand-alone system for material blending. The blend unit shown on the left side is equipped with additional conveyors to feed material to each blend component.

If the gravimetric blend unit is independent but has to work in line with material conveying and extrusion, the throughput of all sub-systems have to be equalised. Here an ultrasonic gauge at the extruder inlet controls the level of the blended material. A level control loop changes the set-point of the blend unit accordingly.

In case of starve feeding a screw speed signal generates a proper set-point.

Direct blending with operator station

Features

In many applications blending systems are design to a specification, especially if all components are different.

The mechanical design takes these issues into account.

throughput
  • Total operating range
  • Operating range of each component
material properties
  • Pellets, regrind, fibres, flakes, etc.
  • Dry-blend, free flowing powder
  • Bulk density
conveying
  • storage hopper
  • conveyor

 

Product information