The LRMIX 100L Screw Extrusion Sigma Kneader is a production-grade sigma blade mixer with integrated screw extruder discharge and SS304 stainless steel product-contact surfaces. Designed for high-viscosity compounds requiring intensive kneading action and direct transfer to downstream equipment — without manual discharge handling.
Key Features
Screw Extrusion Discharge — Minimal Residue
The screw forces compound out under positive pressure, clearing the vessel more completely than gravity-fed tilt discharge. For sticky materials such as silicone rubber and ceramic clay, this significantly reduces batch-to-batch residue and material loss.
Direct Feed to Downstream Equipment
The integrated screw extruder discharges compound as a continuous strip directly onto a calender, into a granulator or into forming equipment — eliminating manual transfer and reducing operator contact with adhesive or elevated-temperature materials.
SS304 Stainless Steel — No Contamination Risk
All product-contact parts — vessel interior, sigma blades, end plates and screw extruder — are SS304 stainless steel. Eliminates iron oxide contamination for colour-sensitive, transparent or purity-critical compounds.
Differential Blade Speed — No Dead Zones
Counter-rotating sigma blades at differential speeds continuously renew the shear zone throughout the mixing chamber. Uniform distribution of fillers and additives with no unmixed pockets.
Simple, Reliable Configuration
No heating jacket and no vacuum means fewer maintenance points and lower running costs. The correct choice for applications that do not require temperature control or vacuum degassing during mixing.
Suitable Materials & Applications
This 100L SS304 screw extrusion sigma kneader is suitable for:
- Silicone rubber (HTV) compounding — feeds calender or granulator directly
- Ceramic clay body preparation — uniform extrudate for forming equipment
- Carbon electrode paste — graphite and carbon black based formulations
- Adhesives and sealants — structural adhesive base at ambient temperature
- Rubber compounds — general industrial rubber mixing
- Chewing gum base — screw feeds forming equipment directly
- BMC / DMC compound mixing
- Pigment paste and colour concentrate
Industry Application Guides
Silicone Rubber Kneader Machine
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Adhesive & Sealant Mixer Machine


Why Choose LRMIX
LRMIX is the international brand of Shandong Laihong Machinery Equipment Co., Ltd — sigma kneader manufacturer with over 15 years of production experience, exporting to 40+ countries across Southeast Asia, the Middle East, South Asia, Europe and the Americas. All equipment manufactured at our 4,000m² factory in Shandong, China. Supplied factory direct — no middlemen.








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