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In plastic extrusion, materials such as PE, PP, PVC, PET, ABS, PA, and engineering plastics exhibit significantly different melt behaviors. Viscosity, thermal sensitivity, filler content, and shear tolerance vary widely between polymers.
As a result, screw element selection and arrangement play a decisive role in:
Melt stability
Mixing uniformity
Energy efficiency
Final product quality
A generic screw configuration cannot meet the diverse requirements of plastic processing. Instead, screw structures must be designed around material characteristics and compounding goals.
| Item | Description |
|---|---|
| Application Focus | Plastic extrusion and compounding |
| Screw Structure | Modular twin screw elements |
| Element Functions | Conveying, mixing, residence control |
| Materials | Tool steel, PM-HIP alloys, wear-resistant alloys |
| Processing Scope | Thermoplastics and engineering plastics |
| Customization | Available for specific plastic formulations |
| Manufacturing Standard | Precision machining and heat treatment |
| Manufacturer | ZHITIAN |
Twin screw screw profiles for plastics are built by assembling different functional elements along the shaft, including:
Conveying elements for controlled material transport
Mixing and kneading elements for dispersion and homogenization
Functional elements for residence time and pressure regulation
By adjusting the sequence, length, and proportion of these elements, engineers can fine-tune:
Shear intensity
Melt temperature profile
Filler dispersion quality
Throughput stability
ZHITIAN designs plastic-focused screw configurations based on processing behavior observed in real production environments, ensuring that theoretical design aligns with practical operation.
These screw elements are widely used in plastic processing applications such as:
Plastic compounding and modification
Masterbatch production
Filled and reinforced plastics
Engineering plastics processing
Recycling and reprocessing of polymers
They are suitable for both laboratory-scale extrusion lines and continuous industrial production systems.
Material-oriented design: Screw elements matched to polymer behavior
Process flexibility: Easy adjustment for different plastic formulations
Stable melt control: Improved temperature and shear balance
Consistent quality: Uniform dispersion and homogenization
High compatibility: Suitable for mainstream twin screw extruders
Selection should be based on polymer type, filler content, melt viscosity, and desired mixing performance.
No. Each plastic material requires a tailored screw element arrangement to ensure stable processing.
Yes. Modular design allows optimization for recycled materials with variable flow behavior.
Filled plastics, masterbatches, engineering plastics, and recycled compounds benefit significantly from tailored screw configurations.
ZHITIAN develops and manufactures twin screw extruder components for plastic processing applications, including screw elements, barrels, and gearboxes. By focusing on material behavior and process requirements, ZHITIAN provides practical screw solutions that support stable operation and long-term production reliability.