In the world of Twin Screw Extrusion, the quality and configuration of Screw Elements are critical to process efficiency, product quality, and overall operational success. As the core functional units within compounding and extrusion systems, screw elements handle conveying, mixing, and shearing — defining the very performance of your extruder.
Lesun Screw offers a comprehensive portfolio of high-precision Screw Elements designed to meet diverse processing needs across industries. Our range includes:
Conveying Elements: Engineered for efficient material transport, ensuring consistent feeding and smooth flow throughout the screw channel.
Kneading Blocks: Provide intensive shear and dispersive mixing, essential for homogenizing high-viscosity and complex compounds.
Mixing Elements: Facilitate both distributive and dispersive mixing, enhancing material uniformity without applying excessive shear forces.
Special Elements: Customized for specific applications such as venting, reversing, or other unique process requirements.
Our Screw Elements are crafted from a variety of wear- and corrosion-resistant materials to withstand the harshest operating environments. Additionally, we offer extensive customization in geometry, length, and function to perfectly match your extrusion needs.
Thanks to their design versatility, Lesun’s components are fully compatible with mainstream extruder brands worldwide, including Coperion, Leistritz, Berstorff, Toshiba, JSW, and many others. Whether your production involves high-output masterbatch lines, engineering plastics, or reactive extrusion, Lesun Screw can help you build the ideal screw configuration for optimal performance.
Looking for reliable Custom Extruder Parts that improve throughput and product quality? Get in touch with Lesun today!
Contact us at: info@lesunscrew.com
Integrated barrel combining feeding and venting functions to optimize space and enhance process flexibility.
Best suited for:
Compact configurations
Combined feeding and venting
Flexible process layouts
SME elements introduce shallow reverse grooves on conveying flights, generating controlled melt backflow and improving distributive mixing.
Best suited for:
Melt stage mixing
General distributive mixing
Applications requiring good self-cleaning
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
Double flight conveying elements are the most widely used design in twin screw compounding. They provide the best balance between free volume and torque transmission.
Best suited for:
Feeding sections
Venting zones
Pressure control sections
Simple keyed design for basic torque transmission in low-load extrusion systems.
Best suited for:
Low torque applications
Legacy extruders
PVC processing
Neutral kneading elements provide strong mixing with minimal conveying effect, ensuring stable residence time and high mixing efficiency.
Best suited for:
High mixing zones
Sensitive formulations
Residence time control
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