02.2 / EXTRUDER SCREEN PACKS
Extruder Screen Packs
Mesh layers are assembled in sequence for use with the extruder's support plate and screen changer. Selection depends on polymer, melt temperature, flow and differential pressure.
Start with a photo or drawing, even if some specifications are still unknown.
Download catalog (Chinese PDF) View the product family · Valve Screens & Edged Filter ScreensProduct & selection information
- Common materials
- SS304, SS316 / SS316L; confirm the alloy against the process medium.
- Construction options
- Round or shaped packs, spot welded or edged; confirm layer sequence and fit with the support plate.
- Dimensions
- Pack dimensions: profile A / B and total thickness t; confirm each layer's mesh count and sequence.
- Filtration requirements
- Mesh count, wire diameter or target filtration rating; confirm the rating definition and verification method.
Dimensions to discuss
Not to scale. Letters identify dimensions to be confirmed.
Pack dimensions: profile A / B and total thickness t; confirm each layer's mesh count and sequence.
Common structures & selection priorities
- Construction options
- Round or shaped packs, spot welded or edged; confirm layer sequence and fit with the support plate.
- Dimensions
- Pack dimensions: profile A / B and total thickness t; confirm each layer's mesh count and sequence.
- Key considerations
- Extra layers change flow resistance and support. Combine filtration and support layers for the contaminants, flow and allowable differential pressure, not simply layer count.
Filtration knowledge & FAQs
Are more layers always better?
Extra layers change flow resistance and support. Combine filtration and support layers for the contaminants, flow and allowable differential pressure, not simply layer count.
Is mesh count the same as filtration rating?
Mesh count describes openings per inch. Aperture also depends on wire diameter and weave; mesh count alone does not establish particle retention.
How do operating pressure and differential pressure differ?
Operating pressure is the system pressure. Differential pressure is the pressure difference across the element. Confirm operating pressure, clean pressure drop and maximum allowable differential pressure.
How are cleaning and maintenance determined?
Confirm cleaning methods, backwash conditions and replacement criteria against the equipment instructions and process medium, rather than appearance alone.
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