What is a Sigma mixer used for?

The Sigma mixer (also known as the Sigma kneader or Z-blade mixer) is a high-efficiency mixing and kneading device specifically designed for materials with high viscosity and consistency. It achieves shear, compression, folding, and kneading of the materials through the counter-rotating differential speed of the double Z-shaped blades, ensuring uniform mixing without damaging the material structure.

This equipment is widely used in multiple industries that have high requirements for mixed precision and material integrity. Its core function is to handle complex materials that are difficult for ordinary mixers to handle, such as those with high viscosity, prone to agglomeration, or requiring a vacuum/heating environment.

1. Core working principle: The Sigma mixer is equipped with two counter-rotating Σ-shaped (Z-shaped) paddles, installed in a semi-cylindrical mixing chamber:

Differential mixing: The rapid and slow paddle speeds create strong shear forces, breaking up material agglomerates; Omnidirectional mixing action: Through compression, stretching, folding, and kneading actions, the material is fully interlaced in three-dimensional space; Controllable environmental support: Optional vacuum, heating (electric/heat transfer oil), and cooling systems prevent bubbles and control reaction temperature.

It can handle materials with viscosities exceeding 500,000 cps, such as silicone rubber, sealant, and carbon paste.

II. Main application industries and typical materials: Chemical industry and new materials

Application: Silicone rubber, sealant, ink, dye, resin, flame retardant mixing Advantages: Can be deaerated under vacuum to avoid air hole defects in finished products Food and medicine

Applications: Paste-like condiments, medicinal ointments, colloids, nutritional preparations. Advantages: Most contact parts are made of SUS304/316L stainless steel, meeting GMP hygiene standards. New energy and electronic materials

Applications: lithium battery slurry, conductive adhesive, carbon electrode paste

Advantages: supports inert gas protection, prevents material oxidation, ensures batch stability

Rubber and plastic materials, as well as composite materials

Applications: butyl rubber, hot melt adhesive, glass cement, sealant, light clay. Advantages: compatible with screw extrusion or hydraulic turnover tank, enabling continuous production

Longjun Sigma kneading machine, with its stable performance, flexible configuration, and attentive after-sales service, has become a reliable choice in the field of high-viscosity material mixing. It has currently provided customized solutions for thousands of domestic enterprises.

Technical parameters of sigma mixer