Sigma blade mixer

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Product overview

JCT’s modeling clay sigma blade mixer features counter-rotating, differential-speed twin ∑-shaped blades combined with precise jacketed temperature control and high-efficiency shearing. It is engineered for modeling clay formulations including flour-based, starch-based and polymer-based compounds. All product-contact surfaces are mirror-polished stainless steel to prevent contamination and color carryover, enabling automated, bubble-free, continuous large-scale production.

Key application areas

• Traditional modeling clay / flour-based modeling dough (flour, salt, water, glycerin systems)
• Ultra-light modeling clay / lightweight modeling dough (PVA-based expandable microsphere systems)
• Crystal clay / slime
• Educational and industrial modeling clay

Equipment parameters (for reference)

Equipment volume: 5–10000 L
Working volume ratio: 60%–70%
Gear reducer: Hardened gear reducer, 1 set
Inverter: Heavy-duty inverter, 1 set
Shaft drive: Twin stirring shafts driven by a double-gear mechanism with gear tank
Heating medium: External hot-oil circulation (supports electric heating, hot-water circulation, cold-water cooling)
Cylinder structure: W-shaped cylinder body; blades precision polished to prevent sticking and provide high shearing/kneading effect
Inner cylinder: 16 mm SS304 plate, mirror polished
Jacket: 14 mm Q235-B carbon steel with diversion reinforcement plate
Side plates: 35 mm Q235-B + 6 mm SS304 lining plate, precision polished
Agitator blades: Integral cast steel coated with 6 mm SS304, finely polished; 2 sets
Clearance blades–cylinder: 3–6 mm
Clearance blades–side plates: 3–4 mm
Mixing speed (Front:Rear): 0–48 / 32 RPM, variable frequency control
Lid opening: Hydraulic lid opening device with hydraulic station
Unloading: Hydraulic tilting cylinder discharge (tilt angle ≥ 95°); optional reversible screw discharge for continuous extrusion
Cylinder head locking: Pneumatic locking
Sealing: 8 mm SS304 fluorosilicate strip seal
Agitator shaft seal: Combined structure — stainless steel sleeve + PTFE V-ring + PTFE sealing root (4 sets)
Electronic cabinet: Floor-standing control cabinet with power distribution ammeter/voltmeter; main motor forward/reverse control; hydraulic cover and tilting control; temperature display and visual indicators

Advantages and technical features

• Uniform dispersion without color variation via high-shear twin ∑ blades with differential speeds
• Powerful kneading, squeezing and folding shear actions for fast dispersion of pigments, fragrances and additives, preventing spotting and uneven color
• Hygienic, food-grade product-contact materials (standard SS304/316) and mirror-polished surfaces (Ra ≤ 0.4 μm) to reduce cleaning and color-change time
• Multiple high-efficiency discharge options for integration with packaging lines: reversible screw extrusion and hydraulic tilting (up to 95°)
• Precise temperature control through jacket system to prevent moisture loss or starch denaturation from frictional heat
• Vacuum degassing capability up to -0.098 MPa to remove microscopic air bubbles and improve smoothness and ductility

Service and support

• Trial run service with customer materials in dedicated testing workshop for process validation
• Formulation and process guidance to optimize mixing and temperature-control parameters
• Global service: CE-certified equipment with on-site installation, commissioning and operator training

Specifications / technical data

• Equipment volume: 5–10000 L
• Working volume ratio: 60%–70%
• Product-contact materials: SS304/SS316 mirror-polished (Ra ≤ 0.4 μm)
• Heating/cooling options: hot-oil circulation / electric heating / hot-water / cold-water cooling
• Relative blade speed: 0–48 / 32 RPM (variable frequency)
• Vacuum system: up to -0.098 MPa
• Discharge methods: reversible screw extrusion; hydraulic tilting (≥ 95°)
• Sealing: SS304 fluorosilicate strip seal; combined shaft seals (stainless sleeve + PTFE V-ring + PTFE root)