This covers specialized fields such as engineering plastics modification, masterbatch production, polyolefin powder granulation, one-step extrusion of foamed materials, one-step extrusion of sheets and films, wood-plastic composites, and battery separators.
Process Characteristics: Extremely high requirements for dispersive and distributive mixing, devolatilization, filling, shear, and temperature control, with a narrow process window.
Screw Elements: They are specially configured and made from durable materials like high-speed tool steel and nickel-based alloys to process a wide range of polymers and composites, including alloys, glass fiber-reinforced plastics, highly filled compounds, flame-retardant grades, grafted polymers, and thermoplastic elastomers, ensuring efficient mixing with minimal degradation.
Screw shaft: Must exhibit exceptional strength and fatigue resistance to withstand high torque, high rotational speeds, and frequent process adjustments.
Screw barrel: Typically equipped with high-performance bimetallic liners to ensure wear and corrosion resistance, while providing precise heat transfer across all temperature-controlled zones.
CKE elements combine conveying and mixing functions, providing gentle material exchange with low shear and reduced energy consumption.
Best suited for:
Heat-sensitive materials
Low-shear compounding processes
Applications requiring stable conveying with mild mixing
Forward kneading elements provide a balance between conveying and mixing, with adjustable shear depending on stagger angle and disc width.
Best suited for:
Plastication zones
General compounding
Controlled mixing processes
Cold-Forming high-torque shaft with improved strength and fatigue resistance for demanding extrusion conditions.
Best suited for:
High torque extrusion systems
High filler compounding
Continuous high-load production
Reverse kneading elements introduce backflow and pressure build-up, increasing residence time and enhancing mixing intensity.
Best suited for:
Before venting zones
Degassing preparation
High mixing demand sections
Stretching elements, also called S-type elements, improve material exchange and distributive mixing in partially melted zones.
Best suited for:
Semi-plasticized material zones
Improved dispersion
Gentle mixing processes
Liquid Injection Barrel | Twin Screw Extruder Dosing Barrel
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