High-filler formulations—including calcium carbonate (CaCO₃), talc, glass fiber (GF), and mineral-filled compounds—create severe mechanical loads and abrasive conditions inside co-rotating twin-screw extruders.
Without a screw configuration specifically engineered for these materials, processors often encounter:
Accelerated screw and barrel wear
Inconsistent filler dispersion
Excessive melt temperature increase
Reduced process stability
Increased maintenance costs and downtime
Our engineering approach focuses on optimizing screw geometry, mixing intensity, and wear performance to improve both productivity and equipment life.
[Request Technical Consultation]
As filler loading increases, the extrusion process becomes increasingly demanding.
Common challenges include:
These issues are particularly common in high-CaCO₃ masterbatch, glass-fiber reinforced compounds, and other highly filled formulations.
[Learn why high filler materials accelerate screw wear ]
In many cases, processing limitations originate from screw design rather than material characteristics alone.
Typical root causes include:
Excessive shear concentration within kneading sections
Inefficient balance between dispersive and distributive mixing
Poor transition between conveying and mixing zones
Screw configurations not optimized for filler loading and rheology
As filler content increases, standard-purpose screw designs often become inadequate for maintaining both mixing efficiency and component durability.
[Understand mixing mechanisms in twin-screw extrusion]
Rather than modifying individual elements, we optimize the entire screw configuration as an integrated process system.
[How to Design Screw Elements for High Filler Compounds]
Although every process requires individual evaluation, high-filler screw designs generally follow the same engineering principles.
Final configurations are optimized according to formulation characteristics and production targets.
Properly engineered screw configurations can help processors achieve:
Longer screw and barrel service life
Improved filler dispersion uniformity
Reduced maintenance frequency
More stable operating conditions
Lower total cost of ownership (TCO)
Actual results depend on formulation, operating parameters, and equipment configuration.
High-filler compounding requires more than wear-resistant components—it requires a screw configuration specifically engineered for the material, process, and production objectives.
Through optimized screw design and wear-engineered material solutions, processors can improve both process efficiency and equipment longevity.
WhatsApp: 8613605142173
Mail: sales@lesunscrew.com
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
SK conveying elements provide approximately 15% higher free volume than standard conveying elements and are particularly suitable for low bulk density materials.
Best suited for:
Feeding zones
Side feeding
Low bulk density materials
Liquid Injection Barrel | Twin Screw Extruder Dosing Barrel
Fully enclosed barrel ensuring stable melting and pressure build-up under high fill and controlled processing conditions.
Best suited for:
Melting sections
Pressure build-up zones
Stable conveying conditions
Barrel with vent openings enabling efficient removal of volatiles under controlled partial fill and pressure conditions.
Best suited for:
Devolatilization
Moisture removal
Vacuum venting sections
Six-sided geometry enabling uniform torque transfer and rapid screw element replacement.
Best suited for:
Powder coating
Frequent material changes
Fast screw configuration changes
Knowledge >
Product Catalog Download >
Who are we? >
To make it more convenient for you to obtain product quotations, please check and confirm the following information in the box below.
