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ZME is a high-intensity distributive mixing toothed element in twin-screw extrusion systems, serving as an upgraded version of TME toothed discs. It is based on a single-flight reverse small-lead screw substrate with forward tooth slots machined on the flights. Combining strong distributive mixing with certain dispersive mixing capacity and full-intermeshing self-wiping performance, it is a core compounding component that balances mixing intensity and anti-stagnation requirements.
Disc-Type Toothed Substrate Structure
Based on independent circular discs, with multiple sets of teeth evenly distributed around the circumference, presenting a gear/turbine shape overall. There is no continuous helical flight, which is an essential difference from the spiral substrates of SME and ZME elements.
Customizable Tooth Profile Parameters
Teeth can be designed as straight teeth, forward-inclined teeth or reverse-inclined teeth. Tooth quantity, height and thickness can all be customized to match different mixing intensity and flow pattern requirements.
Alternating Intermeshing Arrangement in Groups
Usually installed in groups of multiple discs. Toothed discs on the two screws are staggered along the axial direction, with teeth inserted into each other's gaps to form continuous cutting and splitting channels.
Deliver High-Intensity Distributive Mixing
Efficiently disrupt material flow and significantly improve the distribution uniformity of multi-component materials, especially excelling in lateral mixing with better homogenization effect than conventional slotted mixing elements.
Assist in Dispersing and Refining Particles
Break mild agglomerates through tooth gap shear, assisting uniform dispersion of pigments, fillers and liquid additives.
Enhance Melt Interfacial Renewal
Continuously cut the melt to form fresh surfaces, improving mass transfer efficiency in devolatilization and reactive extrusion processes.
Regulate Local Material Flow Pattern
Form local resistance by its non-conveying characteristic, stabilize upstream material fill degree, and cooperate with upstream and downstream elements to build a gradient mixing section.
Outstanding Distributive Mixing Capacity
More splitting times per unit length and excellent lateral mixing and homogenization efficiency, making it a high-efficiency solution for low-viscosity system compounding.
Large Melt Specific Surface Area
The toothed structure can cut the melt into extremely thin streams, with significantly higher specific surface area than other mixing elements and high heat and mass transfer efficiency.
Highly Adjustable Parameters
Mixing intensity can be flexibly adjusted by modifying tooth quantity, tooth angle and tooth thickness to adapt to different formulations and process targets.
Simple Structure & Easy Machining
The disc structure has low machining difficulty, controllable manufacturing cost, and convenient replacement and maintenance.
| Parameter | Value |
|---|---|
| Product Name | TME Screw Element |
| Model | φ11 mm ~ φ350mm |
| Applicable Brands | Most extruders on the market |
| Material | Tool steel, HIP, stainless steel, nickel-based alloy, cobalt-based alloy, etc. |
| Properties | Wear-resisting, Corrode-resisting and Durable |
