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Stainless Steel Screw Discharge Sigma Kneader Mixer

Name: Stainless Steel Screw Discharge Sigma Kneader Mixer
Brand: KARVIL
Rating: 5.0 (94 reviews)

Specifications:

Total Volume: 5 Liters
Main Motor Power: 1.5kW-4 (Siemens Innomotics)
Construction Material: Full SS304 Stainless Steel (Internal Mirror Polished)
Blade Type: Sigma Blades (Surface Mirror Polished)
Blade Speed: Fast: 0-42 rpm / Slow: 0-35 rpm (VFD Control)
Discharge Method: Screw Extrusion Discharge
Screw Speed: 0-65 rpm (VFD Control)
Heating Method: Zero-Distance Electric Heating

【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.

Model:
NH-5
Brand:
KARVIL


Availability:



Inquiry

Product Description

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)

Product Overview

This 5L Laboratory Sigma Kneader is built for high-viscosity polymer trials where cleanliness and temperature control are critical. Unlike standard mixers, this unit features a full SS304 stainless steel body with a mirror-polished interior, ensuring material doesn’t stick to the walls and making cleanup between batches simple.

We have equipped it with a 1.5kW Siemens Innomotics motor and a specialized Zero-Distance Heating system, which transfers heat directly to the chamber wall for faster, more even temperature rise. For the discharge phase, the integrated screw extruder pushes the sticky polymer out automatically, eliminating the need for manual scraping.

Stainless-Steel -Screw-Discharge-Sigma-Kneader-Mixer (2)

Key Features

Hygienic SS304 Design: Every part of the machine, including the support frame and mixing chamber, is made from Stainless Steel 304. The internal surfaces are mirror-polished (Ra < 0.4µm) to meet strict laboratory sanitary standards.
Direct "Zero-Distance" Heating: Instead of a traditional oil jacket, electric heating elements are placed in direct contact with the mixing trough. This improves thermal efficiency and speeds up the melting process for polymers.
Screw Discharge System: Once mixing is complete, simply reverse the screw (VFD controlled, 0-65rpm) to extrude the material. It handles sticky compounds easily and reduces operator workload.
Variable Speed Control: Both the Sigma blades (Fast: 0-42rpm / Slow: 0-35rpm) and the discharge screw are controlled by frequency inverters, giving you full control over shear rates and discharge flow.
Real-Time Monitoring: The top cover is fitted with two sight glasses. One includes a dedicated LED light, allowing you to clearly inspect the reaction status without opening the lid.
Reliable Drive System: Powered by a heavy-duty Siemens Innomotics motor for consistent torque and long operational life.

Watch the Machine in Action

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
Heating Methods	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
Discharging Method		Screw extrusion

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.

karvil-machinery-sigma-mixer-ribbon-mixer_副本

karvil-machinery-sigma-mixer-and-ribbon-mixer

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.

Applications

F.A.Q.

1. Manufacturer or trading company?

We are a manufacturer with strict production standards in China.

2. Where is your company?

Our company is located in Yantai, Shandong,——Powder Equipment Industry Belt.

3. About your company's visit?

We can pick you up at Qingdao Airport conveniently, and then we can take you to our factory.

4. What is the main market for your company?

Asia and Africa, Australia, America, Europe.

5. Can you provide customized products?

Yes, we have professional engineers to meet your special design needs, so we can provide customized products.

6. What is your delivery time?

It usually takes about 20 to 30 days, the exact time also depends on the type and quantity of the product.

7. About the product warranty?

Usually, we provide a 1-year warranty for the products that have been sold, but we can also provide life-long service when you need it to maintain a long-term relationship with you.

8. What are the payment terms?

T/T, L/C, etc.