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GRAVIMETRIC DOSING

Feeding by weight of Masterbatch and other additives

Gravimetric Feeder

The ColorSave Additive Feeder brings the advantages of dosing by weight to the plastics processor who can now be certain that the correct and consistent % of masterbatch and/or other additive is being dosed to the machine.

The ColorSave can be set to dose the required quantity of additive by kg/hr or by a % of the virgin material. The quantity of material is controlled by weight not volume. So variations in the bulk density or shape of granule do not affect the dosing accuracy.

Because consistency and repeatability can now be guaranteed, the processor can reduce the quantity of masterbatch used and also ensure colour match between batches.

The ColorSave comes complete with an automatic loading system which re-fills the feed hopper when necessary

Significant savings in Masterbatch consumption providing short payback time.

Simple and easy operation with automatic calibration.

On-line control of the Masterbatch/ additive flow rate in % or kg/hr.

Guaranteed accuracy & repeatability.

Automatic integrated venturi vacuum loader. Other loading options available.

Powerful DC motor ensures consistent operation and repeatability, even at low output rates.

Automatic self-adjustment if there is any deviation from required Masterbatch weight.

Multiple units can be mounted on one neckpiece.

Easy maintenance & cleaning.

The high-precision load cell is protected against mechanical damage.

Compact mechanical design and low hopper profile, suited to any moulding or extrusion machine.

Optional RS-485 communication output.

Control Module

Control Module	Control Panel	Control Module Ports

Gravimetric Feeder - dimensions

Output range	0.4kg/hr–2.5.0kg/hr or 1.0kg/hr–20kg/hr (for 0.7 gr./cm2 bulk density)
Operation principle	Loss-in weight dosing. On-line metering & control of the colour or additive flow rate (kg/h)
Load cell	20 kg max, temp. compensated
Hopper	3 litre (automatic loading)
Loader	Automatic venturi vacuum loader with integrated colour-shortage alarm
Motor	110W powerful DC motor
Input signals	Dry contact input for synchronization with moulding machine cycle time or 0-10v analog signal, proportional to total extrusion machine throughput (optional)
Setup	a) Percentage of shot weight b) A constant flow rate (kg/h) c) A constant percentage (%) of the total extruder throughput (kg/h), monitored as an analog signal from the extrusion machine, is also available (optional).
Controller	Sophisticated powerful control unit, based on Siemens controller. Advanced control algorithm & software. RS-485 communication port (optional)
Data recording	Accumulated weight of colour fed into the machine
Mounting & feeding	By neckpiece adaptor, directly into the machine throat
Power	230v+/-10%, 50/60hz (115v optional)
Weight	22 kg

Available feeding screws

The COLORSAVE 1000 can be delivered with alternative screws, with the following ranges:

Low Capacity - 0.1 to 2.5 kg/hr

Medium Capacity - 0.2 to 10 kg/hr

High Capacity - 0.4 to 20 kg/hr

Extra Capacity - 0.6 to 40 kg/hr

Selection of the correct screw yields very high accuracy.

RS-485 communication and PC data collection software

Downloadable version of data