Factory-direct OEM/ODM filtration elements designed for high viscosity melt processing, chemical fiber spinning, film extrusion, and polymer recycling.
In high-temperature, high-pressure polymer extrusion and continuous melt filtration, selecting the correct structural configuration and alloy metallurgy dictates continuous operating efficiency and product purity.
Utilizing high-grade stainless steels including SUS 304, 316, and 316L, alongside specialized nickel superalloys like Hastelloy C-276. Resistance to intergranular corrosion, thermal creep, and mechanical stress at operational temperatures exceeding 350°C and pressures up to 30 MPa.
Sintered stainless steel fiber felt provides volumetric depth filtration with porosity reaching up to 85%, ensuring low pressure drop and extended dirt-holding capacity (DHC). Multi-layer sintered wire mesh offers rigid, precise surface retention for screen changers.
Polymer melts exhibit non-Newtonian shear-thinning behavior. Precision-calculated channel geometry within candle supports and leaf disc hubs prevents stagnant melt zones, thermal degradation, and polymer gel formation during extended production cycles.
| Filter Media Type | Filtration Precision (μm) | Max Temp (°C) | Porosity (%) | Cleanability Cycle | Primary Application Areas |
|---|---|---|---|---|---|
| 316L Sintered Stainless Felt | 3 - 60 μm | 400°C | 75% - 85% | TEG / Ultrasonic / Calcination | BOPP/BOPET Film, Polyester Fiber Spinning |
| Multi-Layer Sintered Wire Mesh | 5 - 200 μm | 500°C | 50% - 65% | High-Pressure Solvent / Chemical | Extruder Screen Changers, Resin Granulation |
| Pleated Stainless Candle Element | 1 - 100 μm | 380°C | 70% - 80% | Thermal Pyrolysis + Solvent Flush | Continuous Polymerization, Nonwovens (Spunbond) |
| Rigid Stainless Leaf Disc (Hubbed) | 10 - 150 μm | 450°C | 60% - 75% | Automated Cleaning Line | Optical Grade PET Film, BOPP Packaging Lines |
By pairing advanced Zhejiang metallurgical manufacturing hubs with rigorous quality engineering, Chinese filter exporters deliver unmatched Total Cost of Ownership (TCO) without compromising international standards.
Direct integration with domestic stainless steel wire drawing and precision weaving mills in Zhejiang and Jiangsu enables rapid access to raw materials, eliminating multi-tier vendor markups and supply chain bottlenecks.
State-of-the-art high-vacuum sintering furnaces ensure molecular diffusion bonding of metal contacts without oxidation. Automated longitudinal plasma welding guarantees burst pressure threshold performance exceeding 250 bar.
From CAD drawing verification to prototype sample delivery in under 10 business days. Flexible production lines handle both low-volume specialized replacement orders and high-volume plant expansions.
Meeting international engineering standards requires complete material traceability, rigorous compliance certification, and structured logistics support for multinational manufacturing conglomerates.
Every heat batch of SUS 304, 316L wire mesh, or metal felt is supplied with complete Material Test Reports (MTR) according to EN 10204 3.1 certification. Full traceability guarantees raw material purity and verified chemical composition (Nickel, Chromium, Molybdenum content).
Filter elements manufactured for food-contact plastics, pharmaceutical packaging, and hygiene nonwovens strictly abide by European REACH (SVHC) guidelines, RoHS directives, and FDA food contact suitability parameters, preventing toxic leaching under severe extrusion conditions.
Seamless international trade support including FOB, CIF, DDP, and DAP terms. Specialized multi-layer anti-corrosion, vacuum-sealed packaging protects high-precision micronic filter mesh from moisture oxidation and physical deformation during ocean freight and air cargo transit.
Custom stainless filter solutions are engineered specifically for demanding continuous melt processes where unplanned downtime causes massive financial loss.
High-speed biaxially oriented film lines require continuous disc filter systems. Sintered stainless leaf discs filter out micro-gels, carbonized specs, and catalytic residues down to 5 microns, preventing film web tears and maintaining optical clarity across wide-width film lines.
Extruding ultra-fine denier filament yarn (PET, PA6, PA66) and spunbond nonwovens demands high porosity candle filters. SUS 316L pleated candle filter cartridges provide deep dirt-holding capacity, extending spin-pack operating lifespans and ensuring uniform fiber strength.
Post-consumer and post-industrial plastic waste (PP, PE, ABS, PET) carries heavy contaminants including aluminum foil, paper fiber, and unmelted polymers. Stainless wire mesh extruder screens and continuous screen changers efficiently filter gross impurities during pelletization.
Under intense fluid pressures and chemical exposure, stainless filter elements clear monomer slurries, catalyst recovery solutions, and crude oil refining fractions. High collapse strength (up to 210 bar differential) guarantees structural safety under pressure surges.
As global plastics industries pivot toward circular economy practices and higher optical quality demands, filter manufacturing technology is undergoing rapid evolution.
With mandated recycled content thresholds in packaging, melt filter systems must handle higher contaminant loads without rapid blinding. Next-generation multi-layer gradient fiber felts increase filter service life by over 40% when processing rPET and rHDPE feedstocks.
Ultra-thin display film (optically clear adhesive backing, battery separator films) demands the elimination of sub-micron crosslinked polymer gels. Hybrid metal web and nano-sintered matrices achieve absolute ratings down to 1 micron without shear-induced polymer degradation.
Extending lifetime usability is critical for reducing factory operating expenses. Modern filter element geometry is engineered specifically for repeatable eco-friendly regeneration cycles—combining pyrolysis TEG cleaning, acid/alkali baths, and high-frequency ultrasonic agitation.
Technical answers covering filter selection, OEM manufacturing, cleaning maintenance, and export operations.
Sintered stainless fiber felt offers a 3D random structure with high porosity (up to 85%) and volumetric depth filtration. It is ideal for high-viscosity melt filtration (BOPP film, synthetic fiber) where long service life and high dirt-holding capacity are critical. Wire mesh (woven or sintered) provides 2D surface filtration with precise aperture control, making it ideal for extruder screen changers, resin recycling, and rigid particle removal.
Our OEM process starts with technical review—analyzing your drawings or samples, operating temperature, pressure differential, melt viscosity, and media compatibility. Once parameters are confirmed, we produce CAD models, conduct bubble-point pore size testing on prototype samples, and execute full-scale production. Standard custom lead times range from 7 to 15 days.
Yes! Unlike disposable fiberglass or paper filter cartridges, 304 and 316L stainless steel filter elements are designed for multiple cleaning cycles. Standard cleaning methods include Triethylene Glycol (TEG) solvent vapor stripping, vacuum pyrolysis burn-off furnaces, chemical acid/alkali flushing, and reverse ultrasonic baths. When properly maintained, elements can be regenerated 10 to 20 times.
Every production run undergoes multi-stage Quality Assurance: 1) Raw material chemical analysis via handheld XRF spectrographic analysis; 2) Automated bubble-point integrity testing per ISO 4003; 3) Pressure differential flow testing; and 4) Microscopic weave gap inspection. Every shipment includes factory test certificates and EN 10204 3.1 material compliance documents.
Premature pressure spikes are typically caused by gel formation (polymer thermal degradation), mismatched micron rating selection, uneven melt velocity across the housing header, or insufficient effective filtration area. Our engineering team helps calculate total active filtration area (TAFA) to optimize flow velocity and prevent premature filter blinding.
Select from our specialized line of plastic extrusion screen meshes, high viscosity candle filters, and recycling pelletizing systems.
20+ Years Specialist Manufacturer of Polymer Candle Filters, Leaf Disc Filters, Screen Mesh Filters & Plastic Recycling Systems.
