Lab Scale Sigma Blade Mixer

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)

• Sigma mixer is also known as the z blade mixer or sigma kneader mixer, which is used for kneading, and mixing of high-viscosity materials. Sigma mixer is employed across diverse industries, including chemical, pharmaceuticals and food, due to its ability to effectively mix materials with high viscosities such as silicone rubber, adhesive, graphite and chewing gum. 
  

• The Karvil sigma mixer is consist of mixing chamber, frame support, hydraulic system, electric control system, discharge system and two Z shape blade in the chamber drove by the motor.  

• In the field of sigma mixers, Karvil Machinery satisfy completely their customers’ needs. Through the action of the sigma blade, the hard and tough paste is mixed for a perfectly homogeneous mixture.

• Please contact us  and we will assist you in developing the right solution for you.

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                                                                                    ≤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

Lab Scale Sigma Blade Mixer Features

• Efficient Mixing: Z-type sigma blades provide excellent shearing and blending of viscous materials.

• Vacuum Environment: Degasses materials to improve product quality and consistency.

• Screw Discharge: Ensures clean and efficient discharge with minimal product residue.

• Electric Heating: Maintains stable processing temperatures with high accuracy.

• Safety Assurance: Integrated interlock system halts operation when lid is open.

• Compact & Durable: Stainless steel construction suitable for laboratory use.

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.

1: What is the main advantage of a sigma mixer for silicone rubber?

Sigma mixers are ideal for processing high-viscosity materials like silicone rubber due to their strong shearing action and ability to knead under vacuum and controlled temperature.

2: Can this 5L lab scale sigma mixer operate under vacuum conditions?

Yes, it comes equipped with a vacuum pump, buffer tank, and metal hose for reliable vacuum mixing, which helps remove air bubbles and moisture from the batch.

3: What heating medium can be used in this sigma mixer?

You can use heat transfer oil or purified water depending on the desired temperature range and material compatibility.

4: Is the screw discharge fully automatic?

This model uses a manual ball valve (DN40) for controlled screw extrusion. Fully automatic versions are available upon request.

5: Can I customize the blade speed or motor brand?

Yes. Karvil supports customization of motor type, control system, and blade rotation speed based on your application requirements.