MGF Gravimetric Feeder

Robust hardware, integrated with industry-leading software control to achieve repeatable consistent dosing accuracy.

• Unique twin load cell technology
• Dosing accuracy ± 0.2% on 1% setting
• Feeder ideal for all molding and extrusion processes

Return on Investment 

• MGF software and hardware reduce waste of colorants and additives drastically.
• Maguire Gravimetric Feeders eliminate manual handling and mixing and reduce operation costs.
• Save typically 30% on masterbatch costs compared to manual or volumetric dosing.

Twin Load Cells

• Lightweight aluminum hopper mounted on 2 load cells which measure the weight of the hopper and the material ONLY.
• Continuously monitors the loss-in-weight as material is dosed and automatically adjusts flow rate.
• Measuring only the hopper and masterbatch allows for finer resolution load cells versus weighing complete feeder assembly and motor. This achieves maximum accuracy and control.

Accuracy of ± 0.2%

• Automatic, continuous updates to flow rate calibration during production process.
• Stepper motor provides high resolution control to dose masterbatch accurately to ± 0.2%.
• Choice of dosing screws combined with software control provide industry-leading accuracy.

PRIME Calibration (patented)

• Fast-track calibration on startup. Fully automatic and ready within seconds.
• Primes screw and barrel with material, ready to start production.
• Quicker startups and reduced scrap rates.

100% Injection Coloring (patent pending)

• For critical additives, masterbatches and tints.
• All material in injection molding machine barrel is now colored and gaps are eliminated. No scrap.
• Ideal for fast cycling / small shot weight applications.

Robust Construction

• 30+ years of experience in gravimetric dosing technology & control.
• MGF Gravimetric Feeder has robust hardware integrated with industry-leading software control to provide consistent accuracy that is simple and easy to use.

5 Year Warranty

• Industry leading, comprehensive 5 Year Warranty.
• Warranty as robust as the feeder system.

Modular Design

• Modular design allows key components to lock together easily.
• Easily disassembled for cleaning and reassembled for next job – no tools required.

Simple Set up 

The MGF operates in 3 simple steps:

1. Ready – Load material hopper with masterbatch.
2. Set – percentage setting (LDR): in shot weight or lb/h (kg/h).
3. Go – Automatic calibration and error correction.

Guaranteed feed rate held within ± 0.2% of the desired setting (LDR).

Fast Cleaning and Material Change Over

• Hopper fitted with quick release latches.
• Empty unused material, quick clean, start next job.

Touchscreen Control Option

• Each feeder is equipped with a user-friendly control system.
• Quick set up and start ups.
• Comes as standard or 7’’ touchscreen controller.

Various Options Available

Range of options and accessories to suit every time of installation and application.

• Installation flanges.
• Remote controller kit.
• Remote alarm.
• Choice of screw sizes.
• MGF Venturi Loader System.
• MPM pre mixer for automatic and continuous mixes of masterbatch with main materials.
• High heat option for use with materials like PET, where primary material is above 230⁰ F /110⁰ C.

Feeders for Molding Applications

Continuous Accuracy

100% Injection Coloring

• When accuracy for the entire shot is essential for critical additives, colors and tinting.
• 2 signals – screw back / recovery signal AND Injection signal.
• 75% dose on recovery, 25% dose on injection.

Machine Integration MGF Configuration – ST vs. STV

• MGF ST: Typically newer injection molding machines and extrusion lines.
• MGF STV: Typically older injection molding machines.

Complete Extrusion Control

Extrusion Control Modes:

• Continuous – Feeder automatically doses according to extrusion throughput reference entered into control.
• Extrusion Following – Feeder follows 0-10 V interface signal of extruder to ensure correct setting as throughputs increase / decrease.
• LIW – Follows complete process data from LIW live. Loss in weight updates process consumption every second.

Savings up to 10% via Yield Control for Extrusion Processes

• Automatic extrusion control versus manual regulation.
• Reduced start-up material waste & changeover scrap.
• Immediate control by responding to actual material consumption versus required target.

Details