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MPM Pre-Mixer

MPM Pre-Mixers provide thorough mixing for use with feeders and liquid pumps to dose masterbatch and liquids.

  • Improve mixing and color consistency
  • Range of different standard sizes for different throughputs
  • Easy access and easy cleaning


Series MPM Pre-Mixers automatically and continuously provide thorough mixing of resin, regrind and additives as they enter the throat of the process machine. 

These mixers are designed to mount directly to the feed throat of the process machine with hopper and hopper loader mounted directly above. 

When adding liquid color, masterbatch or other additives, the Maguire Pre-Mixer ensures a homogeneous blend, and coloring is more efficient.

Color consistency of the finished product is improved, and problems such as streaking are virtually eliminated.

Key Features

Visible Color Flow. No Clogging. 

  • Color or additive is introduced into an air pocket just above the mixing blades. 
  • Material dispense is visible through the clear window. 
  • The non-clogging design provides consistent flow of blended material.

Easy Cleaning

  • The wrap-around mix chamber insert easily removed 
  • Clear access to all material contact surfaces. 
  • Stainless steel internal parts facilitate cleaning and will not corrode or discolor.

Material Baffle - flows consistently to process

  • Material cascades over a entry baffle as it enters the Pre-Mixer chamber.
  • Material packing is prevented plus eliminates downward pressure on the process screw. 
  • The drive motor runs cooler, higher mixing speeds can be used, and overall mixing is improved.

Safety Interlock 

  • Standard feature on MPM-18 & MPM-50
    Electrical interlock for operator safety.
  • Reduce color consumption
    In many cases thorough mixing will actually reduce the amount of color required to produce the depth of desired coloring.

MPM Pre-Mixer at a Glance

1. Homogeneous Blend

When adding liquid color, color concentrate or other additives, the Maguire Pre-Mixer ensures a homogeneous blend.

3. Consistent Flow

The non-clogging design provides consistent flow of blended materials to the process machine.

5. Easy Cleaning

The mix chamber is easily removed for quick cleaning.

123456Photo of MPM Pre-Mixer

2. Production Efficiency

Color changes can be made without shutting down processing machines.

4. Simple Operation

Dispensed material is visible through a clear window for full view of material mixing.

6. Reduce Color Usage

Many cases allow color to be settings to be reduced and achieve same results, providing savings and better product consistency.

MPM Pre-Mixer Range

MPM-22 lb Pre-MixerUp to 100 lb/hr (45 kg/hr)
MPM-99 lb Pre-MixerUp to 500 lb/hr (227 kg/hr)
MPM-9C9 lb Pre-Mixer with removable blades and hi-speed motor
Up to 500 lb/hr (227 kg/hr)
MPM-1818 lb Pre-MixerUp to 1,500 lb/hr (680 kg/hr)
MPM-50 50 lb Pre-MixerUp to 5,000 lb/hr (2,270 kg/hr)