Soap Making Sigma Mixer

It uses two counter-rotating Z-shaped (sigma) blades that create intensive mixing through bulk movement, stretching, folding, dividing, and recombining of the material. The blades typically rotate at different speeds (often a 3:2 ratio in tangential design), transferring product from one end to the other while providing shearing and kneading action against the trough walls.

Tangential blades meet at the edges, rotate at different speeds, and deliver strong kneading and shearing—ideal for higher-viscosity materials. Overlapping blades rotate at the same speed, allow faster material interchange between compartments, and are better suited to lighter viscosities, though with comparatively less intensive kneading.

The mixer is offered in Stainless Steel 316, Stainless Steel 304, or Mild Steel. Stainless steel versions can be finished to matt or mirror polish as required, while Mild Steel models receive one coat of red oxide and two coats of epoxy paint. PTFE shaft sealing is provided for food-grade compatibility.

Discharge can be performed manually via a hand-wheel operated tilting mechanism or automatically with hydraulic tilting. Additional options include bottom valves or an extrusion screw for efficient and complete product removal.

Yes. A jacket can be fitted for heating or cooling applications, often with mineral wool insulation and cladding. This helps maintain precise temperature control for temperature-sensitive soap formulations.

Models range from laboratory/pilot scale to large production units, with working capacities approximately from 50 liters (ASM-50) up to 3000 liters (ASM-3000). Motor power varies from 5 HP to 120 HP depending on general or heavy-duty requirements, and voltage can be adjusted to local standards.

It is used primarily in the crutching or amalgamation stage, where soap noodles (base pellets), fragrances, colorants, additives, and other ingredients are blended into a homogeneous mass ready for subsequent steps such as plodding, extrusion, and stamping.

It achieves excellent homogeneity and dispersion of viscous, dough-like mixtures; is available in a wide range of sizes and hygienic materials; reduces mixing time; and consistently produces high-quality, uniform soap products.

Yes. Optional additions include a liquid spray system, vacuum system, screw discharge, blades cooling arrangement, variable frequency drives (VFD), automatic valve discharge, and custom sealing or feeding mechanisms to match specific process needs.