Sigma Mixer Machine

Description

A Sigma Mixer Machine, also widely known as a Sigma Kneader, Z-Blade Mixer, or Double Arm Kneader, is a robust industrial mixing equipment engineered specifically for handling high-viscosity, sticky, and semi-solid materials. This powerful machine delivers exceptional performance in mixing, kneading, and blending tough substances that standard mixers cannot process effectively. From food doughs and pharmaceutical pastes to rubber compounds, adhesives, and specialty chemicals, the Sigma Mixer ensures uniform consistency, superior product quality, and efficient production.

The Sigma Mixer Machine features two counter-rotating sigma-shaped (Z-shaped) blades mounted on parallel shafts. These blades move in a tangential or overlapping manner inside a heavy-duty mixing chamber, creating intense shearing, folding, and kneading action. This unique design is ideal for materials with viscosities ranging from thousands to millions of centipoise. The machine operates at both atmospheric and vacuum conditions, making it versatile for various processing needs.

Built with high-grade stainless steel or carbon steel, modern Sigma Kneaders come with jacketed bowls for heating or cooling, variable speed drives, hydraulic tilting mechanisms for easy discharge, and advanced PLC controls for precise operation. These features make the Z-Blade Mixer one of the most reliable choices for industries demanding consistent results.

Salient Features of Sigma Mixer Machine

Constructed using heavy-duty structural metals, including SS 304, high-grade SS 316, and carbon-based Mild Steel.
Stainless steel exterior surfaces can be customized with either a brushed satin look or a high-gloss mirror finish to match customer specifications.
Mild steel frames are safeguarded against oxidation through a base layer of red oxide primer sealed over by dual layers of durable epoxy paint.
Batch unloading can be managed via manual hand-wheel controls or fully automated hydraulic mechanisms.
Optional temperature-control chambers can be integrated to accommodate external heating or chilling phases.

Outer jackets are securely blanketed in mineral wool thermal insulation and sealed with protective metal sheet cladding.
Configured with precision-engineered tangential 'Z'-profile blades to guarantee consistent, uniform product blending.
Fitted with PTFE shaft packings to ensure absolute safety, hygiene, and food-grade compatibility.
Designed with micro-gaps between the inner shell wall and rotating blades to completely eliminate dead zones and product residue accumulation.
Specialized processing add-ons available upon request, featuring targeted liquid atomization spray networks and hermetically sealed vacuum processing chambers.

Working Principle of Sigma Mixer Machine

Operational Kinematics & Thermal Automation

Differential Counter-Rotation: Twin Sigma (‘Z’) geometry impellers revolve in synchronization at precise, unequal speeds toward one another, continuously conveying media longitudinally through an intricate cycle of mass displacement, elongation, folding, splitting, and re-fusion.
Agglomerate Breakdown: Solid particle reduction is driven by intensive shear stress, tearing friction, and mechanical tearing created as the substance rubs against the moving blades and interior chamber boundaries.
Automated Thermal Transitions: Once the mandatory batch sterilization timeframe concludes, the heating circuit powers down, the pneumatic exhaust vent opens automatically, and the chilling sequence initiates.

Product Evacuation Pathways

Completed batches can be unloaded through three distinct ejection methods:

Tilting the entire mixing trough
Draining via bottom-situated dump valves
Extruding through a lateral side-mounted screw mechanism

Rotor Geometries & Viscosity Matrix

Tangential Blade Layout

Operational Setup: Non-intersecting rotors revolving adjacently at unequal velocities, typically maintaining a 3:2 speed proportion (with the lead blade traveling faster than the rear).
Ideal Applications: Heavy, high-viscosity formulations including industrial adhesives, heavy rubberized compounds, flush colors, chemical dyes, and dense pigments.

Overlapping Blade Layout

Operational Setup: Blades that cross paths directly above the central vessel ridge, requiring absolute phase synchronization and matching rotational speeds to accelerate cross-compartment transfer.
Ideal Applications: Free-flowing, fluid, or creeping substances such as carbon pastes, ceramic clay coatings, cosmetic creams, and pharmaceutical ointments.
Shear Characteristic: Yields a significantly milder kneading and tearing intensity relative to the tangential configuration.

Technical Specification of Sigma Mixer Machine

Model	Capacity – Liters		Motor (H.P.)
Model	Working Capacity approx.	Gross Capacity approx.	General	Heavy Duty
ASM – 50	50 Liters	80 Liters	5 H.P.	7.5 H.P.
ASM – 75	75 Liters	110 Liters	7.5 H.P.	10 H.P.
ASM – 100	100 Liters	150 Liters	10 H.P.	15 H.P.
ASM – 150	150 Liters	200 Liters	15 H.P.	20 H.P.
ASM – 200	200 Liters	300 Liters	20 H.P.	25 H.P.
ASM – 400	400 Liters	550 Liters	30 H.P.	40 H.P.
ASM – 500	500 Liters	750 Liters	40 H.P.	50 H.P.
ASM – 750	750 Liters	1150 Liters	50 H.P.	60 H.P.
ASM – 1000	1000 Liters	1500 Liters	60 H.P.	70 H.P.
ASM – 1500	1500 Liters	2100 Liters	75 H.P.	80 H.P.
ASM – 2000	2000 Liters	2600 Liters	80 H.P.	90 H.P.
ASM – 3000	3000 Liters	3800 Liters	100 H.P.	120 H.P.

* Power voltage can be adjusted as per customer’s domestic power voltage requirements.
* Rights of technical improvements & modification reserved.
* Illustrations & dimensions are shown for information purpose only.

Types of Sigma Mixer

Sigma Mixer Machine

Sigma Mixer Extruder

Lab Sigma Mixer

Food Grade Sigma Mixer

Heavy Duty Sigma Mixer Machine

Z Type Sigma Mixer

Applications of Sigma Mixer

Pharmaceutical Industry
Nutraceutical Industry
Herbal Industry
Ayurvedic Industry
Biotech Industry
Cosmetic Industry
Chemical Industry

Optional Features/Accessories of Sigma Mixer Machine

Liquid Spray System

Vacuum System

Screw System

Blades Cooling Arrangement

Automatic Valve Discharge System

Key Features of Sigma Mixer Machine

Sigma Mixers design offered as per different application requirements. We offer wide range of design features meeting various user requirements. Some of the features are listed below:

Blade Material: Material option of AISI 1030, AISI CF8 & AISI CF8M

U Trough: Construction gauge offered from 3mm thick up to 30mm thick in mild steel and stainless steel 304 & 316 options.

Motor horsepower: Motor horsepower ranging from 1.5 H.P. up to 250 H.P power.

Power Voltage: Can be design as per various geographical power voltage requirements.

Rotation speed: Fix and variable speed RPM offered with option of variable frequency drive.

Feeding: Manual type feeding as well as vacuum/screw type automatic feeding can be offered.

Discharge: Manual, chain type and hydraulic type automatic tilting as well as screw type side discharge system.

Heating: Heating jacket offered for steam heating, hot water circulation and electrical heaters with suitable grade insulation.

Cooling: Jacket offered for cool water circulation.

Sealing: Silicon & PTFE sealing for food grade and asbestos sealing for industrial grade equipment offered.

Finish: 180 grits to 240 grit finish on stainless steel parts and epoxy paint on mild steel parts.

Discharge Clearance: Discharge clearance can be offered as per user requirements.

FAQ for Sigma Mixer Machine

What is a Sigma Mixer Machine?

A Sigma Mixer Machine, also known as a Sigma Kneader, Z-Blade Mixer, or Double Arm Kneader, is a robust industrial mixing equipment designed for high-viscosity, sticky, and semi-solid materials. It uses two counter-rotating sigma-shaped (Z-shaped) blades to deliver intense shearing, folding, and kneading action, ensuring uniform mixing of tough substances like pharmaceutical pastes, food doughs, rubber compounds, adhesives, and chemicals.

How does a Sigma Mixer Machine work?

The machine operates using tangential or overlapping ‘Z’ type sigma blades that rotate at different speeds (typically 3:2 ratio in tangential design) toward each other. This creates bulk movement, stretching, folding, dividing, and recombining of the material, along with shearing against the trough walls for size reduction. Discharge occurs via tilting the container, bottom valves, or an extrusion screw.

What are the main applications of the Sigma Mixer Machine?

It is widely used in the Pharmaceutical, Nutraceutical, Herbal, Ayurvedic, Biotech, Cosmetic, and Chemical industries for mixing high-viscosity materials such as ointments, creams, adhesives, rubber compounds, dyes, pigments, and specialty pastes.

What materials can the Sigma Mixer Machine handle?

The Sigma Mixer is ideal for materials with viscosities ranging from thousands to millions of centipoise. It excels with sticky, semi-solid, and high-viscosity products that standard mixers cannot process effectively.

What are the key salient features of the Sigma Mixer Machine?

Available in SS 316, SS 304, or Mild Steel construction with matt/mirror polish or epoxy paint finishes.
Jacketed bowl for heating/cooling with mineral wool insulation.
Tangential ‘Z’ blades for uniform mixing.
PTFE shaft sealing for food-grade compatibility.
Manual or hydraulic discharge options.
Minimum gap design to prevent product sticking.
Optional spray, vacuum, and other systems.

What are the available capacities and motor options for Sigma Mixers?

Models range from ASM-50 (50L working / 80L gross) to ASM-3000 (3000L working / 3800L gross). Motor power varies from 5 HP (general) / 7.5 HP (heavy duty) for smaller models up to 100 HP / 120 HP for larger ones. Power voltage can be customized.

What is the difference between tangential and overlapping blade designs?

Tangential blades (front blade faster, 3:2 ratio) suit higher-viscosity materials like adhesives and rubber. Overlapping blades (same speed) provide faster material interchange and are better for lighter viscosities like creams, ointments, and carbon pastes, though with lower kneading/shearing intensity.

What optional features/accessories are available?

Options include Liquid Spray System, Vacuum System, Screw System, Blades Cooling Arrangement, Automatic Valve Discharge System, variable speed drives (VFD), different sealing materials, and custom heating/cooling jackets.

Can the Sigma Mixer Machine be customized?

Yes. Customization options include material of construction, trough thickness (3mm to 30mm), motor HP (1.5 to 250 HP), fixed/variable speeds, discharge methods, heating/cooling systems, sealing types, finishes, and feeding mechanisms to meet specific application needs.

What makes the Sigma Mixer Machine suitable for GMP and food-grade applications?

It features high-grade stainless steel construction, PTFE/silicon seals for food compatibility, easy-to-clean designs with minimal product stagnation gaps, mirror polish options, and compliance-friendly features like jacketed bowls and hydraulic tilting for hygienic, efficient production.

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Sigma Mixer Machine

Description

Salient Features of Sigma Mixer Machine

Working Principle of Sigma Mixer Machine

Technical Specification of Sigma Mixer Machine

Types of Sigma Mixer

Applications of Sigma Mixer

Optional Features/Accessories of Sigma Mixer Machine

Liquid Spray System

Vacuum System

Screw System

Blades Cooling Arrangement

Automatic Valve Discharge System

Key Features of Sigma Mixer Machine

FAQ for Sigma Mixer Machine

Countries We Export to

Partner with Industry Experts

Countries We Export to

Partner with Industry Experts

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