Color masterbatch is one of the most widely used additives in the global plastics industry — a concentrated mixture of pigments, fillers, and carrier resins that delivers consistent, uniform color to plastic products during processing. Producing high-quality color masterbatch demands intensive mixing, precise temperature control, and thorough pigment dispersion. LRMIX
sigma kneader machines are specifically built for this high-viscosity, high-filler compounding process — with electric heating and screw or tilt discharge options to match your production line.
What Materials Are Processed in Color Masterbatch Production?
Color masterbatch compounds typically consist of carrier resin, pigments or dyes, calcium carbonate (CaCO₃) fillers, and functional additives. The most common carrier resins processed by LRMIX kneaders include:
PP – Polypropylene
Most widely used carrier resin. Used in packaging, woven bags, injection-molded parts and films
PE – Polyethylene
HDPE and LDPE carriers for blown film, pipes, bottles and flexible packaging
PVC – Polyvinyl Chloride
Rigid and flexible PVC masterbatch for pipes, profiles, cables and flooring
PA – Polyamide (Nylon)
Engineering plastic masterbatch for automotive, electronics and industrial components
TPU – Thermoplastic Polyurethane
Flexible, high-performance masterbatch for footwear, hoses and medical applications
CaCO₃ Filler Masterbatch
High-loading calcium carbonate compounds for cost reduction and stiffness improvement
♻ Recycled Plastic Processing: LRMIX kneaders are also widely used to process post-industrial waste plastic — including paper mill waste plastic and mixed plastic scrap — compounding it with CaCO₃ filler and pigments for use in producing plastic pallets, construction boards, and recycled products. This makes the sigma kneader an ideal machine for circular economy and waste-to-product applications.
Recommended Equipment for Color Masterbatch Compounding
The sigma kneader is the industry-standard machine for color masterbatch and filler masterbatch production, particularly for high-filler, high-viscosity formulations. LRMIX offers two discharge configurations to match different production setups:
The most common configuration for color masterbatch production. After kneading, the compound is discharged directly through a bottom-mounted screw extruder, making it easy to connect to pelletizing or downstream extrusion equipment for a continuous production line.
- Capacity: 5L to 5000L
- Electric heating: precise temperature control 120–180°C
- Screw discharge connects to single or twin-screw extruder
- Ideal for CaCO₃ filler loadings of 50–80%
- SS304 contact parts as standard
- Vacuum option for degassing and bubble removal
- Suitable for PP, PE, PVC, PA, TPU carriers
View Screw Extrusion Kneaders →The tilt-discharge kneader tips the entire mixing chamber to discharge the compounded material into a collection tray or conveyor below. This configuration is preferred for batch production, easy cleaning between color changes, and lower-throughput operations.
- Capacity: 5L to 2000L
- Electric heating with PID temperature control
- Chamber tilts up to 130° for full material discharge
- Fast and thorough cleaning for multi-color production
- SS304 or carbon steel options available
- Suitable for batch compounding and R&D
- Simple structure, easy maintenance
View Tilt Discharge Kneaders →Related Products for Color Masterbatch Processing
Browse LRMIX sigma kneader machines commonly used in color masterbatch and filler masterbatch production lines:
Why Choose LRMIX for Color Masterbatch Mixing Equipment?
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Factory Direct Supply
No middlemen. Competitive pricing direct from our Shandong manufacturing base with 10+ years of production experience.
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Precise Electric Heating
PID-controlled electric heating ensures stable kneading temperature between 120–180°C for consistent pigment dispersion quality.
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Screw or Tilt Discharge
Choose the discharge method that best fits your production line — screw extrusion for continuous output or tilt chamber for batch flexibility.
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Recycled Plastic Compatible
Our kneaders handle post-industrial waste plastic from paper mills and factories, enabling sustainable plastic recycling applications.
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Globally Proven
Color masterbatch kneaders supplied to plastic manufacturers in 40+ countries across Asia, the Middle East, Europe and the Americas.
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Complete Documentation
Full equipment manuals, CE documentation and test reports provided with every machine.
Get a Free Quote for Your Color Masterbatch Kneader
Tell us your carrier resin, filler loading percentage and required capacity.
Our engineering team will recommend the most suitable kneader configuration.
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