Laboratory Vacuum Sigma Kneader Mixer
Product Description
Key Features
Explosion-Proof Configuration
The machine is equipped with explosion-proof motors, electrical components, heating and vacuum equipment, together with a dedicated explosion-proof control cabinet.
Electric Heating
The jacket uses thermal oil as the heating medium, with a total explosion-proof heating power of 2.4 kW, designed for heating temperatures up to 160°C.
Vacuum Mixing
An explosion-proof vacuum pump, buffer tank and metal flexible hose are included. The vacuum system can achieve a vacuum level of up to -0.09 MPa.
Sigma Blade Kneading
Two Sigma blades provide strong compression, folding and shearing forces for high-viscosity and difficult-to-mix materials.
Screw Extrusion Discharge
The integrated screw extrusion system provides controlled discharge of high-viscosity materials through a DN50 manual ball valve.
Compact 5L Design
With a 3.5L effective working volume, the machine is ideal for R&D, process development, laboratory-scale production and small-batch specialty materials.
Working Principle
Mixing → Heating → Vacuum Processing → Kneading → Screw Discharge
The machine uses two Z-shaped sigma blades rotating inside the mixing chamber.
During operation, the blades continuously lift, fold, compress and shear the material. This creates strong kneading forces that are particularly effective for high-viscosity and semi-solid materials.
At the same time, the electric heating jacket transfers heat to the mixing chamber to bring the material to the required processing temperature.
When vacuum processing is required, the mixing chamber is evacuated to remove trapped air, moisture and volatile components.
After the mixing process is completed, the screw discharge mechanism pushes the material toward the outlet for controlled discharge.
Optional Features
Material: SUS 304, 316 or mild steel
Discharging: Tilting discharging/Screw extruding discharging/Bottom plate
Heating: Electric heating/Water heating/Oil heating/Steam heating
Cooling: Water cooling/Jacket cooling
Vacuum: Water-ring vacuum pump/ buffer tank.
Motor: Explosion proof motor
Independent Control Panel: Variable speed/ Temperature/Discharging
Working Volume: 5 to10,000 Cubic Feet (from experiment to production)
Machine in Action
Customer Location: North Macedonia
Machine: 5L Explosion-Proof Vacuum Sigma Kneader
Heating: Electric Heating
Discharge: Screw Discharge
Material: Thermoplastic Composite Materials & Heat-Resistant Insulating Materials
Contact Us for Custom Requirements & Free 3D Layout
Technical Parameters
Type | NH-5 | NH-10 | NH-100 | NH-300 | NH-500 | NH-1000 | NH-1500 | NH-2000 | NH-3000 | NH-4000 | NH-5000 | |
Total Volume (L) | 5 | 10 | 100 | 300 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | |
Mixed amount/batch (L) | 1.5-3.5 | 3.0-7 | 30-70 | 90-210 | 150-350 | 300-700 | 450-1050 | 600-1400 | 900-2100 | 1200-2800 | 1500-3500 | |
Rotation Speed (rpm) | 42/34 | 42/34 | 37/21 | 37/22 | 37/23 | 37/26 | 37/22 | 30/21 | 30/21 | 30/20 | 28/18 | |
Main Motor Power (Kw) | 0.75-1.5 | 1.1-3 | 5.5-11 | 7.5-30 | 15-37 | 22-90 | 22-90 | 30-110 | 30-110 | 45-110 | 55-132 | |
Heating Methods | Steam Pressure (MPa) | Jacket for steam | ||||||||||
Electric Power (Kw) | 2.4 | 2.4 | 6 | 12 | 18 | 30 | 45 | 54 | 72 | 72 | 90 | |
Vacuum (MPa) | 0~ -0.096Mpa (Vacuum Kneader) | |||||||||||
Discharging Method | Tilting cylinder | |||||||||||
Screw extrusion | ||||||||||||
Applications
Projects
Trusted by Global Manufacturers in 50+ Countries. From silicone to adhesives, see how our Sigma Kneaders are solving complex mixing challenges for industry leaders worldwide.
Services
LABORATORY TEST
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PROFESSIONAL ENGINEER
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DIRECT FACTORY
FAQ
Is this mixer suitable for laboratory research?
Yes. The 5L capacity is ideal for formulation development, material testing and pilot-scale production.
Can the mixer operate under vacuum?
Can the machine be customized?
What is the advantage of screw discharge?
Is the machine suitable for hazardous environments?