Sigma Mixer Blade Types

Blades are an important component of sigma mixer. Different blade designs directly determine the shearing force, extrusion force, mixing efficiency, and applicable industries of the equipment.

1. ∑-shaped blade (sigma blade)

The most common and widely used kneader blade

Structural Features:

• Two asymmetrical ∑-shaped blades
• Rotating in opposite directions at different speeds
• Extrusion + shearing + tumbling in parallel

Advantages:

• Suitable for ultra-high viscosity materials
• Unifrom mixing, no dead zones
• Mature technology, high stability

2. Z-shaped blade

High-shear kneading blade

Structural Features:

• Blade shape resembles the letter "Z"
• Strengthened shear force
• Outstanding pushing capacity

Advantages:

• High dispersion efficiency
• Suitable for difficult-to-disperse systems
• High kneading strength

3. Biwing-shaped blade

Enhanced material compression, shearing, and tumbling effects

Structural Features:

• Double-wing forming
• Double-axis counter-rotation with speed difference adjustment
• Optimal clearance between blades and cavity for large coverage area

Advantages:

• Strong extrusion pressure, suitable for high-viscosity materials
• Perfect material turning, reducing mixing dead zones
• High dispersion efficiency, promoting uniform filler distribution
• Stable operation, suitable for mass production