Acrylic Latex Sealant Sigma Mixer

Two counter-rotating Z-shaped (sigma) blades mounted in a trough-like chamber create powerful kneading, shearing, folding, and dispersive action. In the tangential design preferred for higher viscosities, the blades rotate at different speeds (typically a 3:2 ratio), transferring material from one end to the other, eliminating dead zones, and ensuring even mixing with minimal gaps between the blades and trough walls.

The mixer is available in Stainless Steel 316, Stainless Steel 304, and Mild Steel. Stainless-steel versions can be polished to matt or mirror finish as required. Mild-steel units receive one coat of red oxide primer followed by two coats of epoxy paint. PTFE shaft sealing is provided for food-grade compatibility where needed.

Models range from ASM-50 (approx. 50 L working / 80 L gross capacity) to ASM-3000 (approx. 3000 L working / 3800 L gross capacity). Motor power is available in both general and heavy-duty ratings (for example, 5–7.5 HP for the smallest model up to 100–120 HP for the largest). Voltage can be adjusted to match local power supply requirements.

Discharge can be performed manually via a hand-wheel-operated mechanism or automatically via a hydraulic tilting system for complete emptying and easier cleaning. Additional options include bottom valves or a screw extrusion system for controlled or high-volume product removal.

Yes. A jacket for heating or cooling can be fitted, complete with mineral-wool insulation and cladding. This allows steam, hot-water, or electric heating as well as circulating-water cooling to manage process temperatures and support consistent product properties.

Key features include precision-machined tangential Z-blades that maintain a minimal gap with the trough walls (reducing product sticking), robust U-trough construction in thick-gauge metal, high-capacity motors and heavy-duty gearboxes, PTFE or appropriate shaft seals, and optional hydraulic tilting for efficient discharge of highly viscous materials.

Optional features include a liquid spray system, vacuum system, blades cooling arrangement, automatic valve discharge, and variable-frequency-drive speed control. These enhance process flexibility for incorporating additives, removing air, or fine-tuning consistency.

In the tangential design (preferred for higher-viscosity materials such as acrylic latex sealants, adhesives, and rubber compounds), the blades meet tangentially and rotate at different speeds (usually 3:2), delivering intensive shearing and kneading. In the overlapping design, blades rotate at the same speed, provide faster material interchange, and produce lower shear—more suited to lighter-viscosity materials such as creams or pastes.

It delivers superior product uniformity and batch consistency, reduced mixing times, better incorporation of fillers and additives, improved physical properties (elasticity, adhesion, and crack resistance), and minimal air incorporation for a smoother professional finish—while offering robust construction, flexible discharge options, and temperature control tailored to demanding sealant formulations.