Sigma Mixer Machine
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Sigma Mixer Machine or Sigma Kneader is unique mixer machine perform homogeneous kneading operation for heavier viscosity materials. Double Z blades design is the exclusive feature of machine that rotate in opposite directions. Sigma Blade Mixer is advanced
mixer uses to achieve uniform kneading with shear force. Sigma Mixers considered must have for bunch of operations in which mixing, kneading
and grinding to name a few. It is uses for mixing wide array of products including adhesives, pharmaceutical products, polyester compounds, food products, soap, detergent, chemicals, dyes, pigments, pigments, putty, fiber glass and confectionery items to name a few.

Consists of a double U shape bowl welded together. There are two Z type sigma blades that rotate in opposite directions to each other. In
order to obtain utmost kneading and mixing efficiency, clearance between the walls and the containers are kept as less as possible. Mixer trough and blades are made of mild steel, stainless steel of CF8 or CF8M as per individual requirements. Z blade mixer scores 10 on 10 in terms of safety as equipped with safety guards and grills.

Working Principle of Sigma Mixer Machine

Tangential action of mixing is thoroughly obtained by two ‘Z’ shaped kneading blades, which rotates in opposite direction to each other in order to transfer material one blade to another resulting which homogeneous mixing operation performs.

Mixing action is combination of movement, elongating, folding, dividing, and recombining of the dough. Shearing & tearing action of
material through blades and the shell causes size reduction of the solid dough. Once sterilizing the batch has elapsed, the heating circuit
shuts of the pneumatics damper (exhaust) opens and cooling operation commences.

In the tangential design, the blades rotate in the trough meeting tangentially. The front blade generally rotates faster than the rear
blade usually in the ratio of 3:2. Tangential blades are generally used for material of higher viscosity such as adhesives, rubber compounds,
flush colors, dyes, and pigments.

In the overlapping design, the blades overlap above the saddle of the container. Due to the overlapping action it is necessary that the
relative position of the two blades is unchanged, and as a result, both the blades rotate at the same speed. Materials that flow freely or creep down into the blades are mixed using the overlapping blade action. This design offers a faster interchange of material from one blade
compartment of the mixer to the other. Overlapping blade action is used for materials of lighter viscosity such as carbon pastes, clay
coating, creams, and ointments. The overlapping blade produces a lower kneading and shearing compared to the tangential blade action.

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  • Working capacity of up to 2000 liters and custom models available
  • Choice of stationary or tilting units
    for loading and unloading to suit your production needs; bottom valve
    discharge units also available.
  • Mono-screw extruder models available.
  • Jacketed trough design for heating or cooling.
  • Independent blade arm drive with differential rotating speeds and adjustable ratio.
  • Two sigma shaped blades fitted horizontally in each trough of the bowl.
  • Vacuum or pressure designs as per requirements.
  • The complete mixer is mounted on steel
    fabricated stand of suitable strength to withstand the vibration and
    give noise free performance.
  • Explosion-proof constructions available on demand.
  • 5 Step pulley for heavy load bearing capacity.
  • Vacuum generation system can be offered on demand.
  • Available in Stainless Steel 316, Stainless Steel 304 and Mild Steel materials.
  • Stainless Steel polish to matt & mirror finish as per customer’s requirements.
  • Mild Steel finish with one coat of red oxide and two coats of epoxy paint.
  • Discharge option of hand wheel operated (manual) or hydraulic operated (automatic) offered.
  • Mineral wool insulation with cladding on jacket.
  • Tangential designed ‘Z’ blades offered for uniform mixing.
  • PTFE made shaft sealing provided for food grade compatibility.
  • Minimum gap between trough inner shell & blades remove possibility of sticking product.