Dosing & Blending > Loss In Weight > Gravimetric Dosing & Blending System

Graviblend M/L

Colortronic Graviblend ML


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Graviblend M/L is a continuous loss-in-weight gravimetric dosing and blending system for free flowing plastic pellets.

Each Graviblend Plus can have 1 - 8 precision screw feeders per line.

Graviblend M/L is designed for throughputs from 0.25 kg/hr (0.55 lbs/hr) to 2000 kg/hr (4400 lbs/hr). These throughputs are achieved only in continuous extrusion applications.

The dosing of the components is done continuously. The material flow for each component is constantly monitored and regulated.

Technical Information

  • Maximum 8 dosing/feeder stations
  • Minimum throughput:
    Graviblend M: 0.25 kg/hr (0.55 lbs/hr)
    Graviblend L: 0.5 kg/hr (1.1 lbs/hr)
  • Maximum throughput:
    Graviblend M: 500 kg/hr (1100 lbs/hr)
    Graviblend L: 2000 kg/hr (4400 lbs/hr)
  • Maximum material temperature: 65 °C (150 °F)
  • Weight with one dosing/feeding station:
    Graviblend M: 40 kg (88 lbs)
    Graviblend L: 60 kg (132 lbs)
  • Weight of one modular dosing/feeding station:
    Graviblend M: 12 kg (27 lbs)
    Graviblend L: 28 kg (62 lbs)
  • Operating voltage: 230 VAC (+/- 10%), N, PE, 50/60 Hz
  • Cumulative Dosing Accuracy up to +/- 0.1%
  • Variable speed DC drive motors
  • Standard dust-tight construction
  • Vibrating wire load cells with a resolution of 1:1,000,000 per dosing/feeding station

Optional Equipment

  • Vacuum conveying units/system for feeder refill
  • Vibration damping
  • High temperature option (180 °C/356 °F)
  • Disc dosing unit for very low rates