High-efficiency, low-pressure drop filter elements engineered specifically for high-viscosity polymer extrusion, chemical fibers, and advanced film production in Switzerland.
Exploring the technological alignment between Swiss polymer engineering hubs and advanced OEM leaf disc manufacturing capabilities.
Switzerland's industrial strongholds in cantons like Zurich, Aargau, and St. Gallen focus heavily on high-margin technical polymers, including PEEK, fluoropolymers, medical-grade PET, and technical packaging. These resins require defect-free filtration media capable of withholding gels and non-melted specks down to 3 microns under severe thermal pressure.
Swiss machine builders and converter plants demand leaf disc filter assemblies with perfectly smooth flow channels. Dynamic hard-rim and soft-rim leaf disc geometry guarantees zero polymer stagnant zones, preventing thermal degradation and carbonized spot deposition during ultra-thin film stretching.
In accordance with Swiss environmental directives and European circular economy mandates, Swiss recyclers are integrating post-consumer recycled (PCR) PET flakes into high-speed lines. OEM leaf discs with stainless steel micro-fiber felt provide exceptional dirt-holding capacities ($g/m^2$) for contaminated melt streams.
Understanding the mechanical construction, micro-pore matrix distribution, and fluid dynamic performance of continuous polymer filtration elements.
Hard-rim leaf disc filters incorporate a solid welded outer ring that withstands extreme differential pressure ($\Delta P$) spikes during high-viscosity extrusion, preventing disc compression. Soft-rim filters allow slight axial movement, ideal for compact stack arrangements with high filtration surface area ratios.
Sintered stainless steel fiber felt (AISI 316L) provides a 3D random porous structure with up to 80% porosity, maximizing dirt-holding capacity and operational lifespan. Multi-layer woven wire mesh combinations deliver precise surface filtration with lower initial pressure drops for stable shear-sensitive polymers.
High-precision internal hub geometry features metal-to-metal contact sealing rings polished to optical flatness. This prevents molten polymer bypass under operating pressures exceeding 250 bar, safeguarding spinning nozzles and film dies from downstream particle contamination.
Comprehensive comparative analysis of filtration element geometries for OEM equipment integrators and Swiss manufacturing facilities.
| Filtration Element Type | Filtration Area Ratio | Max Pressure Delta ($\Delta P$) | Dirt Holding Capacity ($g/m^2$) | Cleaning & Reusability | Primary Swiss Application |
|---|---|---|---|---|---|
| Hard-Rim Leaf Disc Filter | Very High (Stack Design) | 210 - 250 Bar | High (Sintered Felt) | Pyrolysis / Ultrasonic / TEG | BOPET, BOPP, Technical Film Extrusion |
| Soft-Rim Leaf Disc Filter | Maximum (Compact Stack) | 150 - 180 Bar | Medium to High | Chemical Washing / TEG | Optical PET, Medical Grade Polymers |
| Polymer Candle Filter | High (Pleated Geometry) | 250 - 300 Bar | Extremely High | Pyrolysis & Hydro-jetting | Melt Spinning, Synthetic Fiber (PA66, PET) |
| Multi-Layer Screen Mesh | Standard (Single Layer) | 50 - 100 Bar | Low to Medium | Limited (Disposable/Recyclable) | Single/Twin Screw Extruder Screen Changers |
Our engineering team provides custom mesh configuration, precise hub dimensions, metallographic analysis, and rapid sample prototyping tailored to European machinery specs.
Send Inquiry NowStrict adherence to international metallurgy and food-contact standards ensures seamless integration into Swiss pharmaceutical, food packaging, and chemical supply chains.
Every shipment of raw stainless steel wire mesh or fiber felt undergoes spectral analysis. Full EN 10204 3.1 material certificates accompany orders to verify chemical composition (Cr, Ni, Mo content) for complete quality auditing.
For Swiss converters manufacturing food-grade films and medical delivery polymers, all filter materials are manufactured without organic binders, lubricants, or surface additives, meeting food contact safety regulations.
We are actively developing smart leaf disc filter stacks embedded with pressure differential telemetry indicators and standardized ultrasonic backwashing protocols to lower Total Cost of Ownership (TCO) by up to 35%.
Expert answers regarding OEM manufacturing tolerances, cleaning methods, delivery schedules, and custom disc designs.
Under continuous operation at standard melt conditions (280°C, 150 bar), a high-quality 316L sintered metal felt leaf disc filter stack operates for 20 to 60 days per cycle depending on polymer purity. When maintained via proper TEG (Triethylene Glycol) or pyrolysis cleaning, elements can undergo 10 to 15 cleaning cycles before replacement.
Yes. As a specialized OEM factory, we manufacture custom leaf disc filters matching exact outer/inner hub diameters, spline configurations, rim thicknesses, and micron ratings based on engineering drawings or physical samples provided by Swiss clients.
Our hubs are machined with micron-level CNC accuracy and lap-polished to ensure optical flatness. High-temperature metallic sealing rings (copper, aluminum, or nickel alloys) are supplied to create a hermetic seal under tie-rod compression.
Every production batch undergoes Bubble Point Testing according to ISO 4003 to determine maximum pore size, alongside Air Permeability Testing (ISO 4022) and pressure drop verification to ensure uniform flow distribution across all disc elements.
Standard prototype samples for testing and dimensional verification are produced within 7 to 10 working days. Express air freight to major Swiss hubs (Zurich ZRH, Geneva GVA, Basel BSL) typically takes 3 to 5 business days.
Recycled PET contains high amounts of gel contaminants and micro-particulates. Sintered fiber felt offers a deep 3D filtration matrix that traps gels inside its depth structure without quickly blinding the surface, delivering significantly longer filtration cycles.
Explore our full line of candle filters, extruder screen mesh, leaf disc elements, and plastic recycling equipment available for direct Swiss export.
