Explore our premium range of precision-woven stainless steel wire cloth filter belts, polymer candle elements, and leaf disc assemblies engineered for zero-defect extrusion continuous operation.
In modern high-speed polymer synthesis, film casting (BOPP, BOPET, BOPA), spunbond nonwoven manufacturing, and plastic recycling granulations, the melt filtration stage serves as the final line of defense against product degradation and operational downtime. As global OEM polymer processing lines operate under unprecedented shear rates, elevated thermal loads (up to 350°C), and hydraulic pressures exceeding 250 bar, the demand for precision engineered filtration media has transitioned from standard mesh screens to sophisticated OEM Wire Cloth Filter Belts, multi-layer sintered leaf discs, and high-porosity candle filter elements.
As a leading OEM supplier with over two decades of metallurgical research and precision manufacturing heritage based in Zhejiang, China, Pujiang HG Plastic Machinery Co., Ltd. delivers proprietary filtration solutions designed to maximize Information Gain and operational ROI for multinational engineering groups. Standard plain weave filter screens frequently succumb to mechanical deformation, screen-blindness, and gel breakthrough under extreme differential pressure ($\Delta P$). By contrast, our engineered continuous wire cloth filter belts—crafted predominantly in Reverse Dutch Weave (RDW) architectures using premium AISI 304L, 316L, and Hastelloy alloys—provide unmatched tensile integrity, precise pore geometry, and extraordinary dirt-holding capacity.
The performance of an OEM wire cloth filter belt or polymer candle cartridge hinges upon structural weave geometry, wire diameter uniformity, and alloy chemistry. In auto-screen changers (such as continuous rib-style changers), the wire belt must withstand continuous linear traction without lateral warping or warp-wire shearing.
Features a higher density of warp wires with smaller diameters combined with thicker shute (weft) wires. This structural arrangement delivers high longitudinal tensile strength, making it ideal for automatic continuous screen changers where high traction forces are exerted during belt indexing.
Combines a twilled weaving pattern with high-density warp wires. The wires cross two-over and two-under, enabling an extremely smooth surface finish and finer filtration ratings without sacrificing mechanical stability under severe polymer melt pressure.
Utilized in candle filter cartridges and leaf discs. Non-woven stainless steel micro-fibers are diffusion-bonded (sintered) in a high-vacuum furnace to create a 3D depth filtration matrix with up to 85% void volume, resulting in low initial pressure drop.
| Alloy Grade | Chemical Composition Key Elements | Max Operating Temp (°C) | Corrosion Resistance Profile | Primary Application Domain |
|---|---|---|---|---|
| AISI 304 / 304L | 18% Cr / 8% Ni (Low Carbon) | 550°C | Standard atmosphere, mild organic polymers | Standard PP, PE, PS commodity plastic extrusion |
| AISI 316 / 316L | 16% Cr / 10% Ni / 2.0-3.0% Mo | 750°C | Superior pitting resistance in acidic & chloride melts | PET film, Polyester fiber spinning, BOPP, PC |
| Hastelloy C-276 | Ni-Mo-Cr matrix with W additions | 1000°C | Exceptional immunity to wet chlorine, formic acid, halides | Fluoropolymer (PVDF, PTFE) melt processing |
| Inconel 601 | 60% Ni / 23% Cr / Al additions | 1150°C | Extreme resistance to high-temperature oxidation & spalling | Superalloy recycling & high-thermal synthesis lines |
Tailored engineering packages engineered to solve yield bottlenecks across polymer manufacturing sectors.
Automated continuous screen changers rely on continuous roll-form wire filter belts (typically 10m to 20m in length, widths from 50mm to 400mm). The belt acts as an impermeable barrier against particulate contamination, advancing automatically based on differential pressure setpoints.
The HG Advantage: Our reverse dutch wire cloth belts undergo plasma-cleaned surface treatment and edge plasma sealing. This eliminates loose wire frays that cause downstream melt pump seal failures or orifice clogging in blown film dies.
Biaxially Oriented Films require pristine polymer cleanliness to prevent pinhole ruptures during high-ratio transverse stretching. HG win-series Leaf Disc Filters feature multi-segment wedge wire cores lined with ultra-fine sintered stainless steel wire mesh.
The HG Advantage: Hard-sintered outer protective mesh layers prevent disc collapse during cold-start pressure spikes, providing up to 4000 cm² of active filtration area per disc bundle.
Spunbond and Meltblown nonwoven production lines for hygienic and medical grade textiles require non-stop filtration to prevent filament breakages at the spinneret plate.
The HG Advantage: Pleated stainless steel filter cartridges offer double the active surface area of cylindrical designs, drastically lowering flux rate ($m^3/m^2 \cdot h$) and extending on-stream runtime between thermal cleaning cycles.
Recycling post-industrial and post-consumer polyolefins (PCR/PIR) involves heavy contaminant loads including paper fibers, aluminum foil specks, and cross-linked gels.
The HG Advantage: High-tensile coarse-to-fine multi-layer wire mesh belt screens designed specifically for heavy-duty plastic granulators and pelletizing lines, guaranteeing uninterrupted melt flow.
Pujiang HG Plastic Machinery Co., Ltd. operates a state-of-the-art 15,000 m² manufacturing plant equipped with German computer-controlled heavy-duty weaving looms, automatic laser cutting tables, and high-vacuum sintering furnaces. Our Smart Factory ecosystem bridges raw stainless steel wire rod drawing with finished filtration hardware, granting absolute traceability and pricing competitiveness.
Fully automated rapier looms ensure consistent tension control across the entire belt length. Zero warp-wire variation prevents belt tracking errors during continuous screen movement in automatic changers.
Multi-stage ultrasonic degreasing followed by high-vacuum heat treatment (1150°C) eliminates all drawing lubricants, ensuring zero volatile organic chemical (VOC) outgassing into your polymer melt.
Every production lot of candle filters and leaf discs undergoes Bubble Point testing (ISO 4003) and pressure drop verification (ISO 3968) to certify absolute micron retention ratings prior to export packaging.
We maintain a 500-ton standing inventory of raw SUS304L and SUS316L wire mesh rolls, allowing emergency OEM manufacturing dispatch within 72 hours for critical plant overhaul shutdown windows.
Procurement teams often evaluate filter mesh solely on unit purchasing price. However, industrial experience proves that lower-tier wire mesh screens lead to higher long-term expenditure through premature screen tears, elevated extrusion back-pressure, die clogging, and emergency production halts.
Operating on a global scale requires full alignment with international material and environmental directives. Pujiang HG Plastic Machinery provides complete documentation packages for seamlessly integrating our components into tier-1 OEM equipment.
Certifications & Regulatory Alignment:
Browse our expanded portfolio of custom candle elements, leaf discs, and polymer processing machinery.
