Efficient distributive mixing through controlled melt backflow
Enhanced distributive mixing
Controlled melt backflow mechanism
Excellent self-cleaning performance
Stable operation in melt stage
SME mixing screw elements are developed by introducing shallow reverse grooves on the flights of conventional forward conveying elements.
During operation, these grooves generate controlled melt backflow, promoting repeated material exchange between screw channels and significantly improving distributive mixing performance.
They are typically used in the melt stage, often in combination with restrictive elements to further enhance mixing efficiency.
Enhances material redistribution without excessive shear.
Improves homogenization of additives and melt composition.
Reduces material stagnation and degradation.
Maintains forward transport while mixing.
Backflow-driven distributive mixing without high shear input
| Diameter | Ø18–Ø400 |
| Do/Di Ratio | 1.55～1.8 |
| Length | 0.5～2.5D |
| Pitch | Customized |
| Material | N00/D2/D11/W6/H9/H10/H26/Hastelloy/Stainless |
| Surface Hardness | HRC 58–64 |
| Max. Operating Temp | ≤450°C |
| Wear Resistance | Standard/High/Ultra-high |
| Corrosion Resistance | Standard/High/Ultra-high |
| Application | Masterbatch/Compounding/Recycling /Film/Feed/Food/Pharmacy |
| Suitable for | Twin Screw Extruder |
A: To increase backflow intensity and improve mixing efficiency.
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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
ZME elements combine reverse conveying structure with forward teeth, creating intensive cutting and recombination of melt flow.
Best suited for:
High mixing intensity applications
Difficult-to-disperse materials
High-performance compounding
TME elements use intermeshing toothed discs to split and recombine melt flow, achieving efficient distributive mixing without conveying.
Best suited for:
Melt mixing zones
Fiber-reinforced materials
High homogeneity requirements
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