Engineered for extreme melt pressures, continuous melt flow, and zero-defect filtration across plastic extrusion and synthetic fiber manufacturing.
An in-depth industrial technical report on sintered metal micro-filtration systems, fluid dynamics under extreme shear stress, and OEM manufacturing standards engineered by Pujiang HG Plastic Machinery Co., Ltd.
Founded with a singular commitment to advancing melt filtration performance, Pujiang HG Plastic Machinery Co., Ltd. operates state-of-the-art manufacturing facilities in Zhejiang, China. Specializing in high-precision polymer candle filters, leaf disc filter elements, screen mesh assemblies, and post-industrial recycling systems, our enterprise combines over two decades of metallurgical experience with computerized vacuum sintering and laser welding technologies.
As an ISO 9001:2015 certified manufacturer, we supply global engineering partners across North America, Europe, Southeast Asia, and the Middle East with custom melt filter elements engineered for continuous polymer processing plants.
Industrial polymer filtration demands uncompromised material purity, mechanical integrity under cyclic thermal expansion, and predictable flow dynamics. Our Extruder Candle Filters are fabricated exclusively from certified prime-grade SUS 304, SUS 316L, and duplex stainless steel alloys.
Each element undergoes strict bubble-point testing (ISO 4003), hydraulic pressure-drop measurement (ISO 3968), and metallographic grain structure inspection, guaranteeing 100% filtration efficiency down to 3 μm absolute accuracy without structural media migration or fiber shedding.
Solving non-Newtonian flow challenges, gel breakdown, and differential pressure surges in high-throughput polymer processing lines.
| Filtration Performance Metric | Sintered Metal Fiber Felt Candle Filter | Multi-Layer Stainless Wire Mesh Element | Standard Single-Layer Extruder Mesh |
|---|---|---|---|
| Filtration Structure | 3D Gradient Porous Matrix | 2.5D Layered Surface Screen | 2D Woven Mesh Grid |
| Dirt Holding Capacity (g/cm²) | High (4.2 - 6.8 g/cm²) | Medium (1.5 - 2.4 g/cm²) | Low (0.3 - 0.7 g/cm²) |
| Differential Pressure Resistance ($\Delta P$) | Up to 250 bar | Up to 150 bar | Up to 50 bar |
| Micron Rating Range Absolute | 3 μm – 60 μm | 10 μm – 250 μm | 40 μm – 500 μm |
| Pyrolysis Cleaning Cycles | 15 – 25 Reusable Cycles | 8 – 12 Reusable Cycles | Single-Use / Non-reusable |
| Typical Polymer Applications | BOPET Film, Spunbond Nonwovens, PET Fiber | Polyolefin Pelletizing, PP Pipe Extrusion | Masterbatch Compounding, Waste Recycling |
How global sustainability mandates, post-consumer recycled (PCR) resin adoption, and high-speed film line expansions drive the need for precision filtration.
From heavy plastic recycling plants to high-purity medical nonwoven extrusion, HG filtration elements deliver targeted operational advantages.
Comprehensive compliance documentation, strict quality control procedures, and localized engineering support for seamless OEM replacement.
Pioneering smart filtration manifolds, anti-fouling nano-coatings, and sub-micron sintered metal alloys for next-decade polymer processing.
Developing candle filter cartridges with embedded high-temperature micro-sensors, delivering real-time $\Delta P$ and temperature data directly to Industry 4.0 SCADA control systems for predictive maintenance scheduling.
Applying chemical vapor deposition (CVD) silica and nano-ceramic passivating layers to internal wire structures, reducing thermal carbonization and polymer gel adhesion during long-run polyester synthesis.
Expanding production of high-nickel alloy filter elements (Hastelloy C-276, Inconel 625) engineered to resist aggressive fluoropolymer extrusions (PVDF, PTFE) and corrosive chemical synthesis processes.
Answers to critical technical, operational, and commercial purchasing questions regarding polymer candle filters and screen mesh media.
While SUS 304 provides excellent tensile strength and thermal resistance for standard polyolefin extrusion (PP, PE), SUS 316L contains 2-3% molybdenum. This molybdenum addition significantly enhances resistance to pitting corrosion, organic acids, and halide compounds encountered during PET polymer synthesis, PA6/66 chemical fiber spinning, and high-temperature degradation environments.
Filter element changeover is determined by monitoring the differential pressure ($\Delta P$) across the Continuous Polymer Filter (CPF) housing. When $\Delta P$ reaches the manufacturer's designated upper threshold (typically 150 to 200 bar, or when pressure drop increases by 50-70% over baseline clean pressure), elements must be removed for thermal pyrolysis cleaning to prevent gel breakthrough or structural element deformation.
Yes. We specialize in OEM/ODM fabrication. We frequently manufacture direct-replacement candle filters and leaf discs fully compatible with major European, American, and Asian polymer filtration systems (such as Maag, Nordson Kreyenborg, PSI, Gneuss, and Kobelco). Customization includes length, diameter, mesh combination, structural core porosity, and mounting threads (e.g., M28x1.5, M30x2, hex adapters).
Under proper cleaning procedures—including vacuum calcination or pyrolysis burn-off followed by TEG solvent cleaning, acid/alkali neutralization, and ultrasonic bath treatment—high-quality 316L sintered metal felt candle filter cartridges can undergo 15 to 25 reuse cycles without degrading filtration accuracy or mechanical strength.
For premium optical-grade or capacitor-grade BOPET films, absolute micron ratings between 5 μm and 15 μm using multi-layer sintered metal fiber felt are standard. For general packaging-grade BOPET or BOPP films, 20 μm to 40 μm rating provides an optimal balance between melt purity and extended filter on-stream life.
Explore our complete product ecosystem and technical engineering articles for plastic machinery and polymer processing.
Melt candle filter cartridges are widely used on PP spunbond nonwoven production lines. The primary function of the melt candle filter is to remove contaminants and ensure consistent fiber quality throughout high-speed production.
Read Full Technical Report →In the complex world of industrial filtration, polymer candle filter cartridges have emerged as essential components. This guide covers key selection criteria including material grade, micron rating, and housing compatibility.
Read Procurement Guide →Polymer candle filter elements are playing an increasingly important role in industrial filtration. Their unique structural and performance advantages make them the preferred choice across film, fiber, and chemical processing industries.
Read Application Report →High-capacity filter cartridges, SUS304/316 screens, and plastic granulating equipment backed by Pujiang HG Plastic Machinery Co., Ltd.
Contact our senior technical filtration engineers for OEM custom drawings, sample testing, or bulk manufacturing inquiries.
