Sintered Mesh Melt Filter Cartridges

　　Core Product Positioning

　　Metal Melt Filter Elements are core filtration components specifically designed for high-temperature polymer melt filtration applications, focusing on high-end industrial fields such as plastic extrusion, chemical fiber spinning, membrane production, and chemical polymerization. They precisely solve the problems of intercepting impurities, gels, black spots, and coke particles in high-temperature, high-pressure, and high-viscosity melts, improving melt purity from the source and helping companies achieve both production continuity and finished product quality improvements. They are the preferred solution to replace traditional disposable filter elements, achieving cost reduction and efficiency improvement.

　　Core Material and Process

　　Material Composition

　　Utilizing a multi-layer stainless steel wire mesh composite structure, the core filter material uses 304, 316L, and 316L high-temperature resistant stainless steel wire (customizable according to melt conditions). Different wire diameters of stainless steel wire are layered and matched according to precision requirements, from 0.5mm fine wire to 2mm coarse wire in an orderly combination, ensuring both filtration accuracy and structural strength, adapting to different melt filtration scenarios.

　　Core Manufacturing Process: This integrated manufacturing process utilizes high-temperature vacuum sintering technology, eliminating splicing and welding throughout. The specific steps are as follows: Multiple layers of stainless steel wire mesh are precisely stacked according to precision levels to ensure uniform pore size distribution, laying the foundation for high-efficiency filtration.

　　The mesh is then fused at high temperatures above 1000℃ in a vacuum sintering furnace, seamlessly integrating each layer with the supporting frame to form a rigid, integral structure.

　　After sintering, the mesh undergoes precision grinding and polishing to completely eliminate surface burrs, preventing molten residue and secondary contamination, while also improving structural sealing and preventing molten leakage.

　　This process completely solves the structural weaknesses of traditional spliced filter cartridges, achieving "no welds, no delamination, and no detachment." It maintains structural stability under extreme extrusion conditions, eliminating the risk of filter media breakage or collapse, and is the core process supporting long-term stable production.

　　Core Performance Advantages (Comprehensive Breakdown)

　　1. Extreme Temperature and Pressure Resistance, Adaptable to Extreme Working Conditions

　　Customized for high-temperature polymer melt environments, breaking through the limitations of ordinary filter element materials and structures, maintaining stable performance under extreme conditions:

　　Temperature Range: Can operate stably in high-temperature environments from -20℃ to 450℃, fully resistant to high-temperature extrusion of various polymer melts such as PP, PE, PET, PA, PC, PPS, and PEEK, without softening, degradation, or deformation, and will not release harmful substances to contaminate the melt due to high temperatures;

　　Pressure Resistance: Can withstand melt extrusion pressures up to 35MPa, while also withstanding instantaneous pressure fluctuations (pressure difference impact ≤5MPa), without filter element deformation or leakage due to high pressure, perfectly compatible with single-screw extruders, twin-screw extruders, spinning pumps, and other high-pressure equipment;

　　Long-Term Stability: Performance remains unchanged during continuous production. After 10,000 hours of continuous extrusion testing, filtration accuracy and structural strength retention rate reach over 99%, with no material aging or corrosion issues, and consistent performance over long-term use.

　　2. High-precision uniform filtration, improving finished product quality

　　The core advantage lies in its extremely high pore size distribution consistency, solving the industry pain points of "uneven filtration and incomplete impurity interception" in ordinary filter cartridges, thus improving product quality from the source:

　　Filtration precision range: Customizable across the entire precision range of 10μm~100μm, precisely matched to product needs—10-30μm high-precision filtration is commonly used in membrane production, 20-50μm suitable precision is commonly used in chemical fiber spinning, and 50-100μm coarse precision filtration is commonly used in plastic granulation, with a pore size error ≤±1μm, ensuring precise and controllable impurity interception;

　　Impurity interception efficiency: ≥99.5% interception rate for gel particles, coke particles, metal debris, and unmelted polymer particles in the melt, effectively removing minute impurities and fundamentally preventing defects such as black spots, streaks, pits, and pinholes on the finished product surface;

　　Melt flowability: Multi-layer sintered structure ensures... "High interception rate and high throughput" ensure stable melt flow resistance, preventing sudden drops in flow rate due to rapid impurity accumulation, guaranteeing continuous production and avoiding production interruptions caused by insufficient flow.

　　3. Integrated structural strength eliminates unexpected downtime. Utilizing an integrated high-temperature vacuum sintering process, unlike traditional welded or spliced filter elements, the structure boasts maximum rigidity, completely eliminating the risk of production interruptions:

　　Pressure differential impact resistance:** Withstands pressure differential fluctuations of ±8MPa. During continuous production, sudden changes in melt pressure will not cause filter element deformation or breakage, completely avoiding production line downtime due to filter element failure and ensuring continuous equipment operation.

　　Extrusion wear resistance:** The integrated sintered structure eliminates the risk of loosening and filter material detachment. High-speed melt scouring will not cause filter material wear or debris mixing into the melt, fundamentally eliminating secondary pollution.

　　Structural stability:Maintains precise dimensions under high-viscosity melt (such as modified plastics and special fibers) extrusion conditions, with no expansion or contraction, suitable for long-term continuous production and various complex extrusion equipment.

　　4. Cleanable and Reusable, Significantly Reducing Costs

　　Unlike disposable paper and ceramic melt filter cartridges, metal melt filter cartridges achieve "recycling," resulting in significant cost reduction while also being environmentally friendly:

　　Multiple Cleaning Methods: Supports three mainstream cleaning methods: backwashing, ultrasonic cleaning, and chemical solvent cleaning. The optimal solution can be selected based on the type of melt residue—high-viscosity melt residue is prioritized for backwashing, stubborn coke particles and highly adhesive impurities are cleaned with ultrasonic cleaning, and difficult-to-degrade residues are cleaned with chemical solvents, ensuring thorough cleaning without residue;

　　Number of Reusable Uses: Under normal operating conditions, it can be reused 15-25 times. After professional testing and structural repair, this can be extended to more than 30 times in some scenarios, far exceeding the single-use capability of ordinary filter cartridges;

　　Cost Savings: Compared to disposable filter cartridges, it can reduce filter cartridge procurement costs by more than 80% annually, while avoiding downtime losses caused by frequent filter cartridge replacements. The overall cost reduction benefits are significant, especially suitable for enterprises with large-scale, continuous production.

　　5. Full-Dimensional Customization, Adaptable to All Equipment Scenarios

　　Breaking the limitations of "poor compatibility of general-purpose filter elements," we provide full-process customization services, perfectly matching various melt production equipment with a compatibility rate of 99%:

　　Size Customization:** Customizable filter elements in diameters of 20mm~200mm, lengths of 50mm~1000mm, and wall thicknesses of 2mm~10mm, adaptable to the inlet, outlet, and melt pipeline interfaces of different extruders, spinning machines, and granulators;

　　Filtration Accuracy Customization:** Filter accuracy options across the entire range: 10μm, 20μm, 30μm, 50μm, 80μm, and 100μm, precisely matched to product quality requirements, meeting filtration standards across different industries;

　　Interface Customization:** Supports various interface types including threaded interfaces (M30×2, M45×2, etc.), flange interfaces (round flanges, square flanges), and quick-connect interfaces, adapting to different equipment connection methods and offering strong installation compatibility;

　　Material Upgrade Customization:** Selected for standard operating conditions. 304 stainless steel is used for corrosion-resistant melts, while 316L stainless steel is used for ultra-high temperature and highly corrosive chemical melts. 316L high-temperature alloy is used for these melts, precisely matching the material requirements of different melts.

　　Technical Parameter Details

　　Core Materials: 304 stainless steel, 316L stainless steel, or 316L high-temperature alloy are selected. Customization is available based on the corrosiveness and temperature characteristics of the melt, ensuring a high degree of material matching with operating conditions.

　　Filtration Performance: Filtration accuracy ranges from 10μm to 100μm, with a pore size error ≤ ±1μm. The interception rate for impurities such as gel, coke particles, and metal debris is ≥99.5%, balancing filtration accuracy and melt flow efficiency.

　　Weather Resistance: Temperature resistance ranges from -20℃ to 450℃, allowing for stable long-term operation in high-temperature melt environments. Maximum working pressure is 35MPa, with no leakage after a 40MPa pressure test, and it withstands high-pressure impact and high-temperature extrusion.

　　Structure and Lifespan: Constructed from a single layer of multi-layered stainless steel wire mesh, this filter boasts a rigid structure with no risk of loosening or detachment. It offers a single-use cycle of 3000-8000 hours and a total reuse count of 15-25 times, significantly exceeding the lifespan of traditional disposable filter cartridges.

　　Compatibility: Suitable for various polymer melts including PP, PE, PET, PA, PC, PPS, and PEEK, covering production equipment across the entire plastics, chemical fiber, film, and chemical polymerization industries.

　　Application Scenarios:

　　1. Plastic Film Production: Compatible with various high-end film production lines such as BOPP, BOPET, CPP, and cast film. Film production demands extremely high melt purity; even minute impurities can lead to pinholes, streaks, color differences, and reduced transparency in the finished product. This filter cartridge precisely intercepts gel, black spots, and minute impurities in the melt, improving film smoothness, transparency, and mechanical properties. It is a core filtration component for high-end film companies to ensure product quality.

　　2. Chemical Fiber Spinning:** Used in the spinning processes of various chemical fibers such as polyester, nylon, and polypropylene. Spinning nozzles have stringent requirements for melt purity; unmelted particles and impurities easily lead to nozzle clogging, increased filament breakage, and affect fiber uniformity and strength. This filter element effectively filters impurities in the melt, reducing nozzle clogging, lowering filament breakage, and improving the appearance and physical properties of chemical fibers. It is compatible with all types of spinning equipment for civilian chemical fibers, industrial yarns, and specialty fibers.

　　3. Plastic Granulation and Modification:** Compatible with plastic granulators and modified plastic extruders. Recycled and modified plastics often contain metal scraps, unmelted impurities, and agglomerated particles of modified additives. These impurities affect the performance of the finished product. This filter element intercepts impurities in recycled materials and filters agglomerated particles from modified additives, ensuring the purity and uniformity of the granulated product. It prevents reduced product strength and appearance defects caused by impurities, contributing to the quality improvement and upgrading of the recycled and modified plastics industry. 4. Chemical Polymerization Field: Used for melt filtration of chemical polymers (such as epoxy resin, polyurethane, and specialty resins). During chemical polymerization, coke particles and gel impurities are easily generated, affecting the uniformity and stability of the polymer melt, thus leading to a decline in the performance of the finished chemical product. This filter element effectively removes impurities during the polymerization process, ensuring melt uniformity, improving the quality and application performance of the finished chemical product, and is suitable for various chemical polymerization production lines.

　　4. Specialty Industry Melt Filtration: Suitable for high-end fields such as lithium battery separators, photovoltaic films, and medical plastics (such as infusion bags and syringes). These industries have stringent requirements for melt purity, necessitating high-precision filtration to remove minute impurities and ensure product safety and stability. Customized 10-20μm high-precision metal melt filter elements are available to meet specific industry filtration standards and are suitable for the production of high-end products such as lithium battery separators, photovoltaic films, and medical plastics.

　　Core Value Comparison

　　Key Differences from Traditional Disposable Filter Cartridges

　　Traditional disposable filter cartridges (paper, ceramic) suffer from short lifespan, easy degradation, and poor adaptability, while molten metal filter cartridges achieve a comprehensive breakthrough:

　　Lifespan: Molten metal filter cartridges can be reused 15-25 times, with a single cycle of 3000-8000 hours; traditional disposable filter cartridges are for single use only, with a lifespan typically only 500-2000 hours.

　　Cost-Effectiveness: Molten metal filter cartridges save over 80% on filter cartridge costs annually, eliminating downtime losses due to frequent replacements; traditional disposable filter cartridges have high annual procurement costs, and frequent replacements can cause production interruptions, increasing hidden costs.

　　Structural Stability: Molten metal filter cartridges are integrally sintered, resistant to pressure differentials and high temperatures, with no risk of breakage or degradation; traditional disposable filter cartridges are prone to degradation and deformation at high temperatures, and are susceptible to breakage and leakage.

　　Environmental Friendliness: Metal melt filter cartridges are recyclable, generating no large amounts of industrial waste, aligning with green production principles; traditional disposable filter cartridges are discarded after a single use, generating substantial industrial waste and polluting the environment.

　　Compatibility: Metal melt filter cartridges are fully customizable, compatible with 99% of melt production equipment; traditional disposable filter cartridges have poor compatibility, only matching specific equipment models, resulting in high replacement costs.

　　Brand Strength and Service Support: Brand Strength Guarantee: Leveraging years of experience in metal filter material R&D and production, our metal melt filter cartridges are ISO 9001 quality certified. Each batch undergoes rigorous full-process performance testing, including filtration accuracy testing, pressure resistance testing, temperature resistance testing, impurity interception efficiency testing, and structural sealing testing, ensuring stable product performance and reliable quality. Currently, our products are exported to over 30 countries worldwide, gaining long-term recognition and cooperation from leading companies in the plastics, chemical fiber, and chemical industries. With stable performance and high-quality service, we have become the preferred brand for metal melt filtration in the industry.

　　Dedicated Service Support

　　Free Operating Condition Adaptation Solution: We provide one-to-one customized filter element specifications, precision, and materials based on your production equipment model, melt type, and product quality requirements, ensuring complete compatibility with your production needs.

　　Dedicated Cleaning and Maintenance Guidance: We offer detailed cleaning steps and precautions for different melt residue types, guiding you to properly clean filter elements, extend their service life, and reduce maintenance costs.

　　Supporting Testing and Certification: Each batch of filter elements comes with a detailed test report, supporting third-party re-inspection. We also provide ISO 9001 and other certification documents to ensure product compliance.

　　Fast Delivery Guarantee: Standard specification filter elements are in stock for immediate shipment; customized specification filter elements are produced and delivered within 15-30 days, fully guaranteeing your production schedule and avoiding delays.