【Application Industry】：
Widely used in mixing and kneading of low-to-high viscosity products in many industries such as ceramics, silicone rubber, sealants, clay, chewing gum, candy, bakery food, pharmaceuticals, carbon paste, inks/pigments ,etc.
Karvil Machinery is the supplier of Siemens and provide the sigma blade mixer for its application
NH-400
KARVIL
Standard Design（Customizable）:
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)
Custom-Engineered Sigma Kneader Mixer for High-Viscosity Applications
Karvil Machinery introduces a 400L vacuum sigma kneader mixer, designed for challenging formulations involving rubber and organic solvents. Tailored for the client, this mixer integrates precise temperature control, vacuum processing, and efficient screw extrusion discharge, ensuring optimal mixing quality and processing efficiency.
Whether you're producing rubber-based adhesives, sealants, or specialty polymers, this machine delivers consistent results in a controlled environment, with every component built for reliability and chemical resistance.
While the traditional hydraulic tilting discharge works for general mixing, the Screw Discharge (Extruder) system offers a significant advantage for high-viscosity materials and automated production lines. Here is why 70% of our US and EU clients prefer this configuration for heavy-duty processing.
Unlike tilting mixers that dump material into a bin, the screw discharge allows for continuous extrusion. You can connect the mixer outlet directly to a granulator, packing machine, or cut-to-length system.
Benefit: Eliminates manual material transfer and reduces batch-to-batch downtime.
Perfect for: BMC/DMC, Chewing Gum, and Masterbatch production.
For ultra-sticky materials like hot melt adhesives or butyl rubber, dumping the bowl is ineffective because the material sticks to the walls.
The Solution: The bottom screw acts like a powerful extruder, mechanically forcing the material out through the die head.
Result: Minimal residue left in the tank and zero need for manual scraping, saving hours of labor costs on cleaning.
You can mount different die heads (nozzles) onto the discharge outlet.
Versatility: The material can be extruded directly into specific shapes—tubes, strips, sheets, or round logs—ready for the next processing step.
Efficiency: Combines "Mixing" and "Pre-forming" into a single machine.
Tilting a heavy, hot mixer bowl filled with 1000L of chemicals poses safety risks.
Safety First: The screw discharge allows the machine to discharge material while the mixing chamber remains fully closed and stationary.
Compliance: Reduces exposure to hot vapors and moving parts, meeting stricter US/EU workplace safety regulations.
| 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 ≤0.3MPa | ||||||||||
| 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
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Our Services
 | LABORATORY TEST In order to be able to demonstrate the advantages and modes of action of our industrial mixing machine with your products, our fully equipped modern laboratory/technical center is at your disposal. |
PROFESSIONAL ENGINEER The experienced team of engineers is specialized in the R&D and design of mixers, grinding equipment, and plastic recycling machine. Karvil explores new technical points constantly to create perfect solutions for customers. |  |
 | DIRECT FACTORY Karvil factory has a series of strict standard system to control the procurement of raw materials, manufacturing process, in-process inspection, and product inspection, so as to ensure the quality of our products.
|
F.A.Q.
Q1: What materials is this sigma mixer suitable for?
A: It is ideal for high-viscosity and solvent-based mixtures such as rubber compounds, adhesives, elastomers, sealants, and chemical pastes.
Q2: What is the advantage of screw discharge in a sigma kneader?
A: Screw extrusion allows for faster, cleaner discharge with minimal residue, especially for sticky or viscous materials.
Q3: Can the temperature and speed be adjusted during mixing?
A: Yes, both mixing and screw speeds are frequency controlled. The temperature can be regulated via the steam jacket system.
Q4: How is cleaning and maintenance handled?
A: The hydraulic lifting cover, large manhole, and mirror-polished interior make cleaning and maintenance convenient and efficient.
Q5: Is this machine customizable?
A: Absolutely. We offer customization based on your material properties, processing volume, discharge requirements, and more.
Standard Design（Customizable）:
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)
Custom-Engineered Sigma Kneader Mixer for High-Viscosity Applications
Karvil Machinery introduces a 400L vacuum sigma kneader mixer, designed for challenging formulations involving rubber and organic solvents. Tailored for the client, this mixer integrates precise temperature control, vacuum processing, and efficient screw extrusion discharge, ensuring optimal mixing quality and processing efficiency.
Whether you're producing rubber-based adhesives, sealants, or specialty polymers, this machine delivers consistent results in a controlled environment, with every component built for reliability and chemical resistance.
While the traditional hydraulic tilting discharge works for general mixing, the Screw Discharge (Extruder) system offers a significant advantage for high-viscosity materials and automated production lines. Here is why 70% of our US and EU clients prefer this configuration for heavy-duty processing.
Unlike tilting mixers that dump material into a bin, the screw discharge allows for continuous extrusion. You can connect the mixer outlet directly to a granulator, packing machine, or cut-to-length system.
Benefit: Eliminates manual material transfer and reduces batch-to-batch downtime.
Perfect for: BMC/DMC, Chewing Gum, and Masterbatch production.
For ultra-sticky materials like hot melt adhesives or butyl rubber, dumping the bowl is ineffective because the material sticks to the walls.
The Solution: The bottom screw acts like a powerful extruder, mechanically forcing the material out through the die head.
Result: Minimal residue left in the tank and zero need for manual scraping, saving hours of labor costs on cleaning.
You can mount different die heads (nozzles) onto the discharge outlet.
Versatility: The material can be extruded directly into specific shapes—tubes, strips, sheets, or round logs—ready for the next processing step.
Efficiency: Combines "Mixing" and "Pre-forming" into a single machine.
Tilting a heavy, hot mixer bowl filled with 1000L of chemicals poses safety risks.
Safety First: The screw discharge allows the machine to discharge material while the mixing chamber remains fully closed and stationary.
Compliance: Reduces exposure to hot vapors and moving parts, meeting stricter US/EU workplace safety regulations.
| 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 ≤0.3MPa | ||||||||||
| 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
| | | |
| | | |
Our Services
| LABORATORY TEST In order to be able to demonstrate the advantages and modes of action of our industrial mixing machine with your products, our fully equipped modern laboratory/technical center is at your disposal. |
PROFESSIONAL ENGINEER The experienced team of engineers is specialized in the R&D and design of mixers, grinding equipment, and plastic recycling machine. Karvil explores new technical points constantly to create perfect solutions for customers. | |
| DIRECT FACTORY Karvil factory has a series of strict standard system to control the procurement of raw materials, manufacturing process, in-process inspection, and product inspection, so as to ensure the quality of our products.
|
F.A.Q.
Q1: What materials is this sigma mixer suitable for?
A: It is ideal for high-viscosity and solvent-based mixtures such as rubber compounds, adhesives, elastomers, sealants, and chemical pastes.
Q2: What is the advantage of screw discharge in a sigma kneader?
A: Screw extrusion allows for faster, cleaner discharge with minimal residue, especially for sticky or viscous materials.
Q3: Can the temperature and speed be adjusted during mixing?
A: Yes, both mixing and screw speeds are frequency controlled. The temperature can be regulated via the steam jacket system.
Q4: How is cleaning and maintenance handled?
A: The hydraulic lifting cover, large manhole, and mirror-polished interior make cleaning and maintenance convenient and efficient.
Q5: Is this machine customizable?
A: Absolutely. We offer customization based on your material properties, processing volume, discharge requirements, and more.
