Industrial Sigma Kneader Mixer extruder: the high-performance solution for mixing and extruding high-viscosity materials

Introduction

In industrial processes involving extremely viscous or non-flowing products, simple mixing may not be sufficient. When the process requires both intensive kneading and shaping by extrusion, the Z-arm mixer-extruder is the leading technological solution.

This type of equipment, developed specifically by RMC Marc Guittard, combines high-performance mixing with controlled extrusion, whilst ensuring optimum product quality.

The RMC Marc Guittard Z-arm mixer-extruder, also known as the Sigma Mixer Extruder or Sigma Kneader Extruder, is designed to meet these extreme demands by ensuring homogeneous, reproducible and controlled mixing.

MALAXEUR EXTRUDEUR RMC GUITTARD
Malaxeur à bras Z sigma

How the Z-arm mixer-extruder works

A dual function: mixing and extruding

The mixer-extruder combines two fundamental operations:

  • Intensive mixing via Z-arms (Sigma)
  • Extrusion via a screw or forced discharge system

 

This combination enables:

  • Shaping the material
  • Homogenising the formulation
  • Transfer the product without interrupting the flow

Machine design

A Z-arm mixer-extruder is made of:

  • A closed horizontal tank
  • Two Z-arms rotating in opposite directions
  • An extrusion screw at the bottom of the tank
  • A high-power drive system
  • Options: vacuum, temperature control, automation, monitoring, etc.

Detailed description of the process

1

Loading of materials

 

Feeding of components (liquids, powders, fillers)

Manual or automated loading depending on the process

2

Intensive mixing phase

 

The Z-arms perform optimised kneading:

  • compression of the material
  • high shear
  • stretching of the product

This phase enables:

  • dispersion of fillers
  • homogenisation of the mixture
  • activation of mechanical properties

3

Gradual pressurisation

 

As the cycle progresses:

  • the product becomes denser and more homogeneous
  • once mixing is complete, the direction of the extrusion screw is reversed to start the extrusion phase
  • internal pressure builds up

4

Extrusion of the product

 

The material is then:

  • pushed towards an extrusion screw at the bottom of the vessel
  • transformed into a continuous flow
  • discharged in a controlled manner

This enables:

  • direct transfer to the next stage of the process
  • simplified packaging
  • process automation

The benefits of the Z-arm extruder mixer

Increased industrial productivity

  • Continuous or semi-continuous operation
  • Reduced downtime
  • Integration into automated production lines

Consistent product quality

  •  High homogeneity

  • Repeatability of the mixing process

Suitable for challenging products

  •  Non-flowing pastes

  • Viscoelastic materials

  • Highly filled formulations

Reduction in intermediate operations

  • Elimination of manual transfer
  • Elimination of complex discharge operations
  • Reduction in product losses

Control of process parameters

Thermal management

 

  • Heating (oil, steam)
  • Cooling (water)
  • Maintenance of optimal conditions

 

Essential for:

  • Chemical reactions
  • Heat-sensitive products

Vacuum processing (optional)

 

  • Removal of air and gases
  • Improvement of mechanical properties

High torque and strength

 

  •   Reinforced transmission

  • Resistant to extreme loads
  • Reliable operation with challenging products and complex processes
  • Extended service life

Industrial applications

Chemicals and technical products

  • Adhesives and glues
  • Energy materials
  • Resins
  • Fillers and sealants

Silicones and polymers

 

  • Elastomers
  • RTV / HTV

Industrial materials

 

  • Ceramics
  • Mineral fillers
  • Abrasive pastes
  • Brake linings

Other applications

 

  • Inks
  • Bitumen
  • Composite products

Why choose a Sigma Kneader Mixer?

RMC Marc Guittard benefits

Ideal if you have:

  • Very sticky or non-flowing products
  • A need for a continuous flow
  • High productivity requirements
  • A need to minimise material handling

Strategic benefits

  • Process optimisation
  • Lower operating and maintenance costs
  • Improved product quality

RMC Marc Guittard Expertise

A solution tailor-made for your process

  • Sizing based on viscosity
  • Adaptation to formulations
  • Integration into the production line
  • Production monitoring and control

Proven and recognised expertise

RMC Marc Guittard has expertise in:

  • Extreme mixing processes
  • High-power transmission systems
  • Complex processes involving high mechanical stress

Optimise your mixing process today

Do you work with very high-viscosity products?

The Z-arm mixer-extruder is the ideal solution for:

  • Automating your production
  • Improving quality
  • Increasing your productivity

Contact RMC Marc Guittard for a customised study

  • Review of your formulation
  • Optimisation of your process
  • Customised technical solution

Conclusion

The Sigma Kneader Mixer -extruder represents the natural evolution of the traditional mixer for demanding industries. By combining intensive kneading and extrusion, it enables manufacturers to tackle the challenges posed by very high-viscosity products whilst improving industrial productivity.

Optimisez votre process de mélange dès aujourd’hui