Acrylic Powder and Liquid Kneader Mixer

The Acrylic Powder and Liquid Kneader Mixer is a specialized industrial mixing machine designed for efficiently blending dry acrylic powders with liquid binders or activators to create a homogeneous, extrudable wet mass. Commonly used in cosmetics (e.g., nail art powders and artificial fingernail compounds), pharmaceuticals, coatings, and dental materials, this equipment ensures uniform dispersion while minimizing clumps, lumps, or over-shearing of sensitive ingredients. It supports batch or continuous processing and is ideal for applications requiring precise moisture control, such as wet granulation or high-shear emulsification.

Acrylic Powder and Liquid Kneader Mixer Video

Key Features

• Mixing Mechanism: Equipped with counter-rotating twin shafts or sigma blades that intimately knead powders and liquids. Dry ingredients are loaded into a U-shaped or cylindrical chamber, and liquids are added via drip bars, spray nozzles, or high-shear dispersers for rapid integration.

• Capacity and Scalability: Available in lab-scale (e.g., 2-15 liters) to production sizes (up to 900 gallons or 1,000 kg batches), with options for stainless steel construction to handle abrasive or corrosive materials.

• Speed and Control: Variable speed regulation (low to high shear) for stepless adjustment, often with pneumatic lifting for easy loading/unloading. Operates quietly and stably, with features like fixed paddles to break up powder lumps.

• Materials and Durability: Typically made from polished stainless steel or acrylic glass for hygiene and visibility. Blades last 18-24 months under normal use, with more frequent replacement in high-abrasion scenarios (e.g., mineral-filled acrylics).

• Additional Capabilities: Supports heating/cooling jackets for temperature-sensitive processes, devolatilization, and integration with downstream equipment like extruders.

Applications

• Cosmetics: Mixing acrylic or dip powders with liquid monomers for nail extensions, ensuring pressable and skin-adherent formulations.

• Industrial Coatings: Blending acrylic resins with solvents for paints, putties, or enamels.

• Dental and Medical: Preparing tooth resins or pharmaceutical slurries with consistent viscosity.

• Food/Chemical: Adaptable for similar-density powders like pigments, spices, or detergents, though optimized for acrylic-based compounds.

Benefits

• Achieves superior homogeneity even at low filling levels, reducing waste and improving product quality.

• Prevents common issues like fisheyes (air bubbles) or uneven distribution through controlled shear and convective mixing.

• Easy maintenance with modular designs; compatible with additives for enhanced adhesion or crystallization.

Design of Sigma Mixer

Sigma Mixers design offered as per different application requirements. We offer wide range of design features meeting various user requirements. Some of the features are listed below:

• Blade Material: Material option of AISI 1030, AISI CF8 & AISI CF8M

• U Trough: Construction gauge offered from 3mm thick up to 30mm thick in mild steel and stainless steel 304 & 316 options.

• Motor horsepower: Motor horsepower ranging from 1.5 H.P. up to 250 H.P power.

• Power Voltage: Can be design as per various geographical power voltage requirements.

• Rotation speed: Fix and variable speed RPM offered with option of variable frequency drive.

• Feeding: Manual type feeding as well as vacuum/screw type automatic feeding can be offered.

• Discharge: Manual, chain type and hydraulic type automatic tilting as well as screw type side discharge system.

• Heating: Heating jacket offered for steam heating, hot water circulation and electrical heaters with suitable grade insulation.

• Cooling: Jacket offered for cool water circulation.

• Sealing: Silicon & PTFE sealing for food grade and asbestos sealing for industrial grade equipment offered.

• Finish: 180 grits to 240 grit finish on stainless steel parts and epoxy paint on mild steel parts.

• Discharge Clearance: Discharge clearance can be offered as per user requirements.

Salient Features of Sigma Mixer Machine

• Available in Stainless Steel 316, Stainless Steel 304 and Mild Steel materials.

• Stainless Steel polish to matt & mirror finish as per customer’s requirements.

• Mild Steel finish with one coat of red oxide and two coats of epoxy paint.

• Discharge option of hand wheel operated (manual) or hydraulic operated (automatic) offered.

• Jacket for heating or cooling application can be offered.

• Mineral wool insulation with cladding on jacket.

• Tangential designed ‘Z’ blades offered for uniform mixing.

• PTFE made shaft sealing provided for food grade compatibility.

• Minimum gap between trough inner shell & blades removes possibility of sticking product.

• On demand Spray system, vacuum system

Optional Features/Accessories of Sigma Mixer

• Liquid Spray System

• Vacuum System

• Blades Cooling Arrangement

• Screw System

• Automatic Valve Discharge System

Process Operation of Sigma Mixer Machine

In Sigma mixer tangential action of mixing and kneading obtained by ‘Z’ type (SIGMA) shaped kneading blades, which rotates very accurately at different speed towards each other causing product to be transferred from one end to another end. Discharge of the finished product is achieved by tilting the container or through the valves at the bottom or by means of an extrusion screw beside the container.

The mixing action is a combination of bulk movement, stretching, folding, dividing, and recombining of the material. The shearing & tearing action of the material against blades and the side walls causes size reduction of the solids. After the time period required for sterilizing the batch has elapsed, the heating circuit shuts of the pneumatics damper (exhaust) opens and cooling operation commences.

In the tangential design, the blades rotate in the trough meeting tangentially. The front blade generally rotates faster than the rear blade usually in the ratio of 3:2. Tangential blades are generally used for material of higher viscosities such as adhesives, rubber compounds, flush colors, dyes, and pigments.

In the overlapping design, the blades overlap above the saddle of the container. Due to the overlapping action, it is necessary that the relative position of the two blades is unchanged, and as a result, both the blades rotate at the same speed. Materials that flow freely or creep down into the blades are mixed using the overlapping blade action. This design offers a faster interchange of material from one blade compartment of the mixer to the other. Overlapping blade action is used for materials of lighter viscosities such as carbon pastes, clay coating, creams, and ointments. The overlapping blade produces a lower kneading and shearing compared to the tangential blade action.

Technical Specification of Sigma Mixer Kneader

* Power voltage can be adjusted as per customer’s domestic power voltage requirements.
* Rights of technical improvements & modification reserved.
* Illustrations & dimensions are shown for information purpose only.