Extruder Screens & Polymer Filters
Extruder Screens & Polymer Filters for Melt Filtration in Plastic & Rubber Processing
Extruder screens—also known as extrusion filter screens or melt filter screens—are precision woven wire mesh discs, packs, or screens installed inside an extruder to filter contaminants from molten plastic, rubber, and other polymer-based materials.
They play a critical role in ensuring melt purity, stabilizing extrusion pressure, and protecting key components such as the screw, breaker plate, and die.
In modern extrusion lines, extruder screens are considered indispensable filtration components, enabling manufacturers to achieve high-quality film, sheet, pipe, profile, and pellet products.
PFM SCREEN has over 20 years experience in manufacturing extruder screens and screen packs for the polymer and fiber industries. We offer standard and custom products, designed to meet the demanding requirements of the industry.
Extruder Screens & Polymer Filter Product Options
Beyond maintaining an extensive inventory of extruder screens in various sizes, shapes, mesh configurations, and materials for fast delivery, we also manufacture fully customized screens in-house. Our precision production capabilities ensure every screen meets your exact specifications for reliable fit, stability, and long-term performance.
Our extruder screens are engineered to suit a wide variety of screen changers and belt-type filtration systems.
PFM SCREEN’s product range includes:
Continuous Filter Belts
Continuous filter belts provide uninterrupted melt filtration for high-output extrusion lines, delivering stable pressure, extended running time, and exceptional processing efficiency.
Welded Extruder Screen Packs
Welded screen packs combine multiple mesh layers spot-welded in sequence to ensure progressive filtration, high dirt-holding capacity, and consistent melt quality in demanding processes.
Frame Extruder Screen Packs
Frame extruder screen packs feature mesh securely fitted into a rigid aluminum frame, ensuring easy installation, perfect alignment, and superior stability under extrusion pressure.
Pleated Extruder Screen Packs
Pleated extruder screens increase the effective filtration area while minimizing pressure drop, offering longer service life and improved efficiency for fine-filtration extrusion applications.
Cylindrical Extruder Screens
PFM SCREEN specializes in manufacturing a full range of cylindrical filtration elements for extrusion applications. With numerous mesh configurations available, we provide solutions that deliver more uniform flow and reduced pressure drop.
Special Shapes Extruder Screen
Special-shaped extruder screens are custom-engineered to meet unique equipment designs, ensuring precise fit, reliable filtration performance, and compatibility with specialized extrusion systems.
Advantages of PFM SCREEN's Extruder Screens
- Superior Contaminant Removal: Filters out foreign particles, carbonized materials, and gels to protect downstream equipment and ensure product integrity.
- Pressure Generation: Assists in developing consistent backpressure crucial for stable melt pumping and uniform output.
- Flow Homogenization: Straightens and aligns the polymer melt flow, eliminating irregularities for a consistent final product.
- Process Protection: Shields sensitive dies and other components from damage caused by hard contaminants.
- Versatility: Suitable for virgin resins, recycled materials, and high-viscosity polymers like PP, PE, PET, PVC, and more.
- High Filtration Precision: From 10 microns to 5000 microns to meet diverse production needs.
- Premium Materials: Stainless steel 304/316L, nickel alloys, brass, phosphor bronze, and other corrosion-resistant metals.
- Customizable Designs: Sizes, shapes, mesh counts, layers, ring/frame materials, pleated designs, and packaging options.
Why Choose PFM SCREEN Extruder Screens?
PFM SCREEN has grown into a trusted global supplier of industrial filtration solutions, particularly in polymer melt filtration, where precision, stability, and consistency determine product quality. Choosing PFM SCREEN means choosing a partner who understands your extrusion process at a technical level.
1. 20+ Years of Expertise in Polymer Filtration
With decades of experience serving film extrusion, pelletizing, compounding, masterbatch, fiber production, and recycling industries, we understand the filtration challenges faced by different polymers—from high-viscosity TPU/PA to shear-sensitive EVA & specialty resins.
2. Complete Extruder Screen Product Line
We provide a full range of products, allowing customers to source everything from one supplier:
- Continuous Screen Changer Belts
- Welded, Framed, Pleated, and Sintered Screen Packs
- Cylindrical and Candle Filter Elements
- Special-Shaped Screens for OEM equipment
- Whatever your extruder model or filtration unit, we can engineer a matching screen.
3. High-Precision Manufacturing & Quality Control
PFM SCREEN utilizes global-level production standards:
- Automatic spot-welding for uniform strength
- Strict mesh opening inspection (ASTM / ISO standard)
- Multi-layer alignment control
- Burr-free edges
- 100% visual inspection before packing
Each screen is manufactured for zero deformation and stable filtration accuracy under pressure.
4. Wide Material Options for Different Polymers
We supply all industry-standard alloys:
- SS304 / SS316L
- 202 / 430 stainless
- Brass / Phosphor Bronze
- Nickel, Monel, Inconel
- Duplex & specialty alloys
This ensures proper compatibility with corrosive melts, abrasive contaminants, or high-temperature production lines.
5. Competitive Price with Premium Quality
Thanks to efficient production and strict process control, PFM SCREEN achieves an excellent balance of:
- Better durability
- Longer filtration cycles
- More stable melt pressure
- Lower operating cost
Industries We Serve
PFM SCREEN manufactures extruder screens and screen packs for customers across a broad range of polymer processing industries worldwide:
- Blown Film & Cast Film Extrusion – PP, PE, LLDPE, EVA films requiring contamination-free, high-clarity output
- Pipe & Profile Extrusion – PVC, HDPE, PP-R pipes and window profiles demanding stable pressure and clean polymer melt
- Pelletizing & Compounding – Masterbatch, filled compounds, and recycled material lines needing fine contaminant removal
- Fiber & Filament Spinning – PET, PA, PP fiber and filament production where gel-free melt is critical to yarn quality
- Sheet Extrusion – PET, PS, PP sheet for thermoforming requiring consistent thickness and optical clarity
- Plastic Recycling – Post-consumer and post-industrial regrind lines requiring robust multi-layer extruder screen packs
- Rubber Extrusion – Silicone, EPDM, and natural rubber profiles needing heat-resistant filtration screens
- Specialty & Engineering Polymer Processing – TPU, PA, POM, PEEK and engineering resins with demanding filtration requirements
Extruder Screen Type Comparison
Use the table below to identify the right extruder screen type for your application:
| Product Type | Best Application | Filtration Area | Typical Polymers | Screen Changer Type |
|---|---|---|---|---|
| Welded Screen Pack | General-purpose extrusion, plastic recycling | Standard | PP, PE, PET, PVC, ABS, PS | Manual, slide plate, piston |
| Frame Screen Pack | Precision alignment, quick changeover | Standard | All common polymers | Slide plate, piston type |
| Pleated Screen Pack | Fine filtration, extended service life | High (3–5× flat) | PET, PA, TPU, EVA, specialty | Piston, backflush changers |
| Continuous Filter Belt | High-output, non-stop production lines | Continuous (auto-advance) | PE film, PP, recycled regrind | Continuous belt changer |
| Cylindrical Extruder Screen | Candle filter units, fiber spin packs | High (cylindrical surface) | PET fiber, PA, specialty | Candle filter housing |
| Special Shape Screen | OEM equipment, non-standard geometry | Custom | All polymers | Custom housings |
Frequently Asked Questions About Extruder Screens
What mesh count or micron rating should I choose for my extruder screen?
The right mesh count depends on your polymer type and process requirements. For general PE/PP extrusion, 20–80 mesh (200–840 micron) is typical. For fine filtration in fiber spinning or optical film, 100–325 mesh (45–150 micron) is common. Multi-layer screen packs combining coarse backing mesh with a fine filtration layer offer the best balance of filtration precision and dirt-holding capacity. Contact PFM SCREEN with your specific polymer and cleanliness requirements for a tailored recommendation.
What is the difference between welded and framed extruder screen packs?
Welded screen packs use spot welding to permanently bond multiple mesh layers without an outer frame — they rely on the breaker plate for edge support. Framed screen packs add a rigid aluminum or stainless steel outer ring, providing easier handling, precise positioning, and added structural rigidity. Framed packs are preferred when accurate installation is critical, when edge sealing is required, or to reduce operator error during screen changes.
How often should extruder screens be changed?
Screen change frequency depends on material contamination level, melt temperature, throughput rate, and filtration fineness. In recycling lines with high contamination, screens may need changing every few hours. For virgin resin extrusion, screens can last days or weeks. A pressure rise of 30–50% above baseline typically signals it is time to change the screen. Continuous filter belts and backflush screen changers can extend effective service life significantly.
Can PFM SCREEN supply custom-sized extruder screens?
Yes. PFM SCREEN manufactures fully custom extruder screens to your exact diameter, thickness, mesh count, layer configuration, and frame/ring specifications. We support both standard round screens and special shapes including oval, rectangular, and irregular custom geometries. Samples and small trial batches are available for qualification testing.
What materials are available for extruder screens?
PFM SCREEN supplies extruder screens in stainless steel 304, 316L, 430, duplex stainless, brass, phosphor bronze, nickel, Monel, and Inconel. Material selection depends on operating temperature, polymer chemistry, and corrosion/oxidation resistance requirements. SS316L is the most widely specified material for standard polymer extrusion applications.
Does PFM SCREEN supply screens compatible with specific screen changer brands?
Yes. PFM SCREEN manufactures extruder screens compatible with all major screen changer brands including Nordson BKG, Kreyenborg, Gneuß, Maag, and Ettlinger. Provide your screen changer model and current screen dimensions and we will match or improve upon your existing screen pack specification.
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