Industrial-Grade Stainless Steel Leaf Disc Filters & Sintered Melt Discs
Our professional-grade Stainless steel leaf disc filter series represents the pinnacle of customized mechanical fluid conditioning, high-viscosity polymer melt sorting, and chemical fiber purification. Engineered to meet strict international B2B technical plant specifications, these high-tensile sintered mesh discs and layered leaf rings are mounted sequentially onto central distribution shafts inside automatic continuous screen changers and high-pressure spin pack housings. By incorporating low-carbon SUS316L alloy matrices with automated mechanical hub interfaces, our leaf filter assemblies ensure uniform fluid velocity profiles while trapping microscopic gel specks, carbonized fractions, and catalyst residues down to 1 micron.
As an established global manufacturer and exporter specializing in multi-layer metal filtration laminates, we balance automated vacuum diffusion bonding with precision laser edge welding systems. Our manufacturing plant operates heavy hydraulic blanking presses and specialized CNC tool-indexing machinery to prevent screen warp and deliver flawless surface flatness. Whether you are distributing wholesale replacement components for national synthetic fiber spinning lines, supplying high-output masterbatch compounding facilities, or prototyping custom metric dimensions for polymer film production lines, our leaf discs offer precise absolute micron control, total geometric concentricity, and long-term washable operation loops.
Core Engineering Strengths of Our Leaf Disc Filters
1. Diffusion-Bonded Sintered Mesh Matrix Framework
Standard loose woven mesh sheets easily bow and stretch under the intensive drag forces of viscous polymer melt flows, leading to pore widening. Our elements utilize a 5-layer or 7-layer wire structure fused at all crossover nodes inside a vacuum thermal sintering furnace. This forms a rigid, porous plate that maintains a strict filtration rating under heavy service stresses.
2. Machined Reinforced Central Hub for High Pressures (35 MPa)
High pressure drop conditions generate significant compressive forces near the internal alignment shafts. Our leaf disc filters feature a heavy, precision-machined stainless steel central segment hub with integrated keyways. This structural backbone distributes mechanical clamping loads uniformly, preventing disc collapse or warp distortions under pressures up to 35 MPa.
3. Burr-Free Plasma and TIG Seam Welding to Eliminate Bypass
Any tiny crack along the outer rim or inner seal hub can result in unfiltered polymer fluid bypass. We employ automated laser-guided seaming networks that create perfectly flush, slag-free, and run-free edge profiles. This protects human hands during machine maintenance and ensures a completely tight mechanical lock inside slide-plate chambers.
4. Thermal Creep Resilience and Superior Calcination Washability
Operating smoothly at temperatures up to 600°C without undergoing chemical degradation, these non-magnetic metallic leaves allow for infinite reusable maintenance routines. Once saturated with resin residues, the leaf discs can be treated via vacuum pyrolysis calcination ovens or chemical ultrasonic solvent baths to clear the pores completely, eliminating recurring consumable expenses.
Technical Specifications & Manufacturing Limits
We provide full customizable capabilities to support your target bidding frameworks and regional market demands. Review our standardized architectural specifications below:
| Manufacturing Parameters | Sintered Mesh Leaf Disc Series | Sintered Fiber Felt High-Flow Series |
|---|---|---|
| Metallurgical Base | SUS 316, SUS 316L Low-Carbon Alloy Steel | SUS 316L, Hastelloy C276, Inconel 600 Alloys |
| Media Layer Blueprint | 5-Layer or 7-Layer Vacuum Sintered Mesh Sheet | Porous Sintered Metal Fiber Felt + Mesh Protective Scaffolds |
| Absolute Micron Rating | 5 μm – 80 μm (Strict Absolute Pore Profiles) | 1 μm – 40 μm (High Permeability Deep Traps) |
| Outer Diameter (OD) Span | 177mm, 305mm, 450mm (Standard Sector Sizes) | 100 mm – 500 mm Custom Millimeter Blanks |
| Inner Diameter (ID) Span | 50.8mm (2 inches), 101.6mm (4 inches) | Custom Keyway / Slotted Distribution Ports |
| Dimensional Stamping Tolerance | ±0.05 mm (CNC Press Tolerances) | ±0.08 mm (Heavy Segment Molds) |
| Edge Seaming Matrix | Full TIG Fusion Weld Rim / Compressed Seams | U-Channel Stainless Steel Border Rim Closures |
| Max Allowable Differential Pressure | Up to 30 MPa (High Rigidity Creep Matrix) | Up to 35 MPa (Extreme Burst Resistance Cages) |
Primary Global High-Pressure Extrusion Applications
Our custom-configured stainless steel leaf filter rings operate as vital consumable filtration components inside automated continuous processing industries worldwide:
- BOPP & BOPA Plastic Film Extrusion Lines: Positioned inside central continuous melt filter batteries to trap gelatinous fish-eyes and carbon micro-particles, preventing film holes, webbing tears, and optical defects.
- Synthetic Fiber Spinning & Spin Packs: Fitted beneath polymer distribution shafts in polyester (PET), nylon (PA6/PA66), and spandex lines to guarantee particle sorting before the chemical fluid meets fine spinnerets.
- High-Viscosity Masterbatch Compounding: Deployed inside hydraulic slide-plate screen switchers to handle heavy recycled plastic compound streams, separating mineral dust and un-melted impurities under high torque factors.
- Fine Chemical & Petrochemical Fluid Processing: Inserted within sanitary high-pressure inline chemical loops and corrosive gas scrubbers to isolate precipitates under extreme sterile environments.
B2B Wholesale Supply Chain Quality Tracking & Ocean Logistics
Catering to global industrial equipment buyers, we provide specialized logistical optimization frameworks for all FCL/LCL orders to prevent wire deformation, center hub scratching, and moisture degradation:
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- Multi-Stage Ultrasonic Chemical Degreasing: Prior to final lot count confirmation, all leaf filter rings undergo thorough automated ultrasonic baths to fully dissolve cutting oils and processing lubricants, delivering clean, residue-free surfaces ready for food-contact packaging resin setups.
- Moisture-Proof Vacuum Sealed Bundling: Leaf filter components are stacked in exact quantities, wrapped inside extra-thick anti-static polymer film envelopes, and vacuum-sealed with silica gel desiccant packs to guard against salt-air vapor oxidation during long marine transits.
- Rigid Plywood Outer Case Bedding: Finished vacuum bundles are nested flat inside heavy-duty corrugated cartons secured inside non-fumigation plywood export crates with interior edge stays, completely absorbing vertical port handling shocks.
Frequently Asked Questions (FAQ)
Q1: What are the primary process performance differences between a Sintered Mesh leaf disc and a Sintered Metal Fiber Felt leaf disc?
A1: Sintered wire mesh leaf discs utilize woven wire sheets diffusion-bonded together, providing a highly flat, uniform pore distribution and exceptional mechanical resistance to washing back-pressures. On the other hand, sintered metal fiber felt leaf discs feature a non-woven porous network of random stainless fibers, which yields up to 80% porosity. This delivers significantly lower initial air resistance, higher flow volumes, and superior dirt-holding capacity for fine micron applications.
Q2: What is the most reliable industrial method to wash polymer buildup off used stainless leaf filters?
A2: For ordinary sediment accumulations, a reverse water flush or clean water backwash fluid loop is effective. For severe polymer deposits, organic oils, or carbonized soot traps, we recommend a vacuum pyrolysis calcination oven loop (heating to roughly 400°C–450°C to burn away the polymer chains), followed by a chemical ultrasonic wash bath. This clears the apertures completely without scratching the wire mesh grids.
Q3: Can your factory reverse-engineer non-standard center hubs or keyways based on older European machinery lines?
A3: Yes, our technical division specializes in custom OEM replacement products. You can share your official technical CAD/PDF blueprints or mail a worn physical sample disc directly to our facility. We can reverse-engineer the exact connector flange specifications, internal support hub structures, keyway channels, and micron counts to fit your legacy filter shafts perfectly.
Q4: What is your standard factory MOQ and typical production lead time for high-volume leaf disc filter allocations?
A4: For standard global commercial diameters (such as standard 7-inch or 12-inch leaf discs) where our blanking toolsets are ready, our baseline MOQ starts at 50 pieces per lot size. For unique custom prototype tool engineering loops, specialized inner slotted hubs, or exotic alloys like Hastelloy, lead times usually range from 20 to 25 days to balance machine adjustments.
Get Factory-Direct Wholesale Price & Free Samples
Are you searching for a stable, high-capacity Chinese manufacturer to optimize your procurement costs? Partner with us for premium Stainless Steel Leaf Disc Filters featuring heavy-duty, ultra-high pressure resistance, and maximum effective filtration area. We ensure full compliance with international high-viscosity polymer melt filtration, BOPET/BOPP film manufacturing, and industrial resin recycling standards, backed by seamless global supply chain service.
- Flexible Tiered Pricing: Enjoy massive discounts and competitive FOB/CIF/CFR quotes for full container loads or custom continuous batches to maximize your inventory budget.
- 100% Free Samples: Test our quality firsthand. We offer premium Stainless Steel Leaf Disc Filter samples (available in SS304, SS316, and SS316L) featuring precise micron ratings (0.5µm–200µm), robust multi-layer sintered wire mesh or metal fiber felt structures, custom hub configurations (hard, semi-hard, or soft hubs), and flawless gel-retention capabilities. Perfect for polymer extrusion plants, chemical process equipment manufacturers, or industrial filtration wholesale verification.
- Guaranteed Fast Lead Time: Our advanced high-vacuum sintering furnaces, automated multi-layer mesh assembly lines, precision CNC hub machining centers, and strict bubble-point integrity and flatness testing lines ensure prompt manufacturing and on-time shipment.
- Customized Packaging: Prevent custom disc distortion, center hub thread scratching, or micro-mesh tearing during long-distance ocean transit. We use customized rigid center-spindle positioning crates, individual vacuum-sealed moisture-proof anti-rust wraps, and heavy-duty reinforced shock-absorbing wooden boxes on sturdy pallets.
