Views: 1 Author: Site Editor Publish Time: 2025-08-28 Origin: Site
The lab scale vacuum sigma mixer with screw extrusion discharge customized by Karvil Machinery for Dow Chemical (USA) has been manufactured and passed the customer's online inspection and obtained high praise.
This Stainless Steel Lab Sigma Blade Mixer is used to produce butyl rubber for lab test. After discussion between Karvil engineers and Dow Chemical staff, combined with the production process of butyl rubber, the following technical parameters were determined:
Motor & Drive: 2.2 kW Siemens motor, ABB frequency inverter
Mixing System: Double sigma blades, mirror-polished chamber for efficient mixing of high-viscosity materials
Speed Range: Fast shaft 0–42 rpm / Slow shaft 0–35 rpm, adjustable by inverter control
Vacuum System: Pump, buffer tank, and metal hose for bubble-free mixing
Heating Method: Electric heating up to 230°C, ensuring stable temperature performance
Discharge System: Screw extrusion with DN40 manual ball valve, ideal for sticky and dense compounds
Construction: Full 304 stainless steel, mirror-polished contact surfaces, brushed external finish
This design enables mixing, vacuum degassing, heating, and extrusion discharge in one compact unit, making it ideal for rubber, elastomer, and polymer R&D.
1️⃣ Customized Solution
Dow Chemical needed a LAB scale but high-performance sigma mixer for butyl rubber development. Karvil provided a customized 5L vacuum heating sigma mixer, meeted with their process requirements.
2️⃣ Premium Components
The use of Siemens motor, ABB inverter, and stainless steel 304 construction ensures stable performance, durability, and compliance with international standards.
3️⃣ Advanced Mixing Reliability
The combination of vacuum system, high-temperature electric heating, and screw extrusion discharge are great for processing of sticky elastomers without bubbles or material loss.
4️⃣ Industry Experience
With over 20 years of expertise and successful installations in 50+ countries, Karvil Machinery has earned a reputation for delivering dependable solutions in the rubber, polymer, and chemical industries.
5️⃣ Customer Satisfaction
From design consultation to delivery, our engineers worked closely with Dow Chemical. The client expressed high satisfaction with the machine’s design, performance, and customization.
At Karvil, we continue to provide customized mixing solutions for high-viscosity materials in rubber, polymer, and chemical industries.
info@karvil.com
