Specifications and Selection Criteria of Extruder Mesh Screens

Extruder screens’ specifications directly determine filtration efficiency and production stability, while scientific selection ensures optimal (adaptability) to extrusion workflows.

Key Specifications

• Material: Stainless steel (high temp/corrosion resistance, long service life, ideal for harsh industrial extrusion) and copper (superior thermal conductivity, suitable for low-heat, precision production) are mainstream; mesh wire thickness affects durability.
• Mesh Count: Ranges 20–400 mesh—coarse mesh (20–80) for pre-filtration, fine mesh (100–400) for high-precision products (e.g., thin film, micro-cable).
• Size: Customized to extruder models (diameter, length) to ensure tight fit and avoid melt leakage.
• Filtration Precision: Measured by micron (μm), matching impurity size in raw materials (e.g., 50μm for general plastic extrusion, 10μm for high-end profiles).

Selection Criteria

1. Align with raw material properties: High-temperature/corrosive materials (e.g., engineering plastics) choose stainless steel; heat-sensitive materials (e.g., thin film) opt for copper.
2. Match extrusion process: High-pressure/high-heat processes need thick-wire, high-strength screens; precision extrusion requires fine-mesh screens.
3. Adapt to product quality demands: High-surface-finish products (e.g., decorative profiles) select fine mesh; general-purpose products (e.g., common pipes) use medium mesh.
4. Balance service life & cost: Mass production prioritizes durable stainless steel to reduce replacement frequency; small-batch precision production can use copper despite shorter service life.

Choosing the right screen hinges on harmonizing specifications with material, process, and product needs—laying the foundation for smooth extrusion and high-quality output.