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Spiral Press Filter Belt
DESCRIPTION
Spiral Press Filter Belt is a high-performance monofilament polyester filter and dewatering solution widely adopted in industrial solid-liquid separation processes. Different from traditional woven filter cloth, our polyester spiral press filter belt features a unique spiral twisted wire structure with pin-connected spiral loops, forming a sturdy chain-like integral mesh belt without weak weaving seams, delivering higher tensile stability and longer service life.
Manufactured from premium abrasion-resistant polyester material, this industrial filter mesh belt supports long-term continuous operation under harsh working conditions with outstanding durability and chemical stability. The belt structure is upgraded with additional filler yarns inserted inside the spiral loops, which effectively balances air permeability and mesh opening. This specialized fabric configuration precisely lowers excessive air permeability while maintaining reasonable mesh openings, greatly reducing raw material leakage and fine particle loss on the belt surface during filtration and dewatering.
Versatile in industrial applications, our polyester spiral press filter belt serves multiple industries including food processing, pharmaceutical production, textile printing and dyeing, garment manufacturing, leather processing, and salt industry. It is perfectly compatible with various professional filtration and dewatering equipment, such as high-pressure filter washers, pulp-liquid separators, mesh belt coal washers, and horizontal belt filter machines.
Featuring a smooth, anti-clogging monofilament surface, our spiral press filter belt allows fast, hassle-free high-pressure water cleaning, greatly reducing equipment downtime and daily maintenance costs. Fully customizable in loop specification, thickness, air permeability and belt width, this heavy-duty industrial dewatering belt delivers stable filtration performance and outstanding fatigue resistance during long-cycle continuous operation. It serves as a reliable, cost-effective solution for diverse continuous industrial filtration, dewatering and solid-liquid separation systems.
PRODUCT STRUCTURE
This high-performance polyester spiral filter belt consists of three core structural components: spiral monofilament wires, cross connection wires and precision filler yarns. The innovative seamless spiral loop structure eliminates weak woven seams, while internal filler yarns accurately calibrate mesh opening size and air permeability for stable filtration. All belt edges adopt advanced folded or cut glued sealing technology, featuring high flexibility, structural firmness and zero wire shedding. Custom width ranging from 20cm to 500cm is available to fit all types of industrial filter press machines.
FEATURES
High cross-section stability and long service life
Custom width: 20–500 cm to fit all filtration equipment
Seamless connecting joints via special spiral ring structure
Tough reinforced glued edges
FDA certified for food-grade use
Resistant to multiple acids and organic solvents
Outstanding tensile strength & dimensional stability
Temperature tolerance: -75°C ~ +150°C (dry); max 70°C (wet)
ADVANTAGES
Stable & Precise Filtration: Optimized filler yarn configuration ensures consistent air permeability and uniform mesh opening, delivering stable dewatering efficiency and effectively reducing fine material loss during filtration.
Excellent Structural Durability: Built with high-tensile polyester monofilament for outstanding dimensional stability and mechanical strength. The filter belt features strong resistance to abrasion, weak acid, weak alkali and organic solvents, supporting long-term uninterrupted industrial operation.
Ultra-Wide Temperature Resistance: Maintains stable working performance in extreme temperatures, ranging from -75°C to +150°C under dry conditions, and adapts to continuous operation below 70°C in wet and humid environments.
Seamless Integrated Structure: Adopts integral spiral loop connection design without weak splicing seams. It avoids premature fracture and failure common in traditional clipper-seam filter cloths, ensuring overall structural uniformity and higher tensile stability.
Reinforced Glued Sealed Edges: All belt edges are professionally sealed with high-strength flexible glue, effectively preventing edge deformation, wire shedding and fraying, greatly prolonging the overall service life of the filter belt.
Low Maintenance & High Efficiency: The smooth monofilament surface resists sludge and dirt adhesion, enabling fast and convenient high-pressure water rinsing. It reduces equipment downtime and lowers daily operation and replacement costs.
FDA-Certified Food Grade Safety: Compliant with FDA food contact safety standards, non-toxic and pollution-free, fully applicable to food, beverage and edible material processing dewatering and filtration.
Full Customization Flexibility: Multiple spiral loop specifications (small/medium/large) and round/flat filler yarn options are available. Customized sizes and permeability perfectly meet diverse precision filtration and dewatering requirements.
SPECIFICATION
We supply a full series of polyester spiral press filter belts with complete specifications, covering different loop sizes, tensile strength, weight, thickness and air permeability to match various filter press models and industrial dewatering demands.
Type | Spiral loop width | Filament diameter | Strength | Weight | Thickness | Air permeability | CFM | ||
Spiral ring monofilament | Connection Wire | filler material monofilament | |||||||
Small loop | 5.2 | 0.5 | 0.8 | 0.60*3 | 1800 | 1.5 | 2.1 | 4480 | 280 |
Medium loop | 8 | 0.68 | 0.9 | 0.80*4 | 2000 | 2 | 2.45 | 6080 | 380 |
Medium loop | 7.15 | 0.68 | 0.9 | 0.90*3 | 2000 | 1.9 | 2.45 | 5760 | 360 |
Medium loop | 7.15 | 0.68 | 0.9 | 0.80*3 | 2000 | 1.85 | 2.45 | 7750 | 484 |
Medium loop | 7.15 | 0.68 | 0.9 | Flat Wire 2.1*0.80 | 2000 | 1.8 | 2.45 | 9000 | 563 |
Medium loop | 7.15 | 0.68 | 0.9 | Flat Wire 2.1*0.88 | 2000 | 1.85 | 2.45 | 8000 | 500 |
Medium loop | 7.15 | 0.68 | 0.9 | Conductive carbon wire | 2000 | 1.6 | 2.45 | 10000 | 625 |
Large loop | 8 | 0.9 | 0.9 | 0.90*3 | 2300 | 2.3 | 3.03 | 7500 | 468 |
Large loop | 10 | 0.9 | 1.1 | 1.0*4 | 2000 | 2.4 | 3.15 | 6240 | 390 |
Alkali resistance | 10 | 0.9 | 1.1 | 1.2*3 | 2000 | 2.25 | 3.15 | 6240 | 390 |
Large loop | 8 | 1 | 0.9 | 1.0*3 | 2000 | 2.5 | 3.6 | 5000 | 315 |
Large loop | 12 | 1.2 | 1.3 | 1.2*3 | 2600 | 2.85 | 4.3 | 7500 | 468 |
APPLICATION
Our polyester spiral press filter belts are widely applied in industrial solid-liquid separation, material dewatering and drying processes, perfectly compatible with horizontal belt filters, high-pressure filter washers, pulp-liquid separators, coal washing machines and other professional filtration equipment.
Environmental Protection: Municipal & chemical sludge dewatering, industrial wastewater treatment
Food & Beverage: Fruit and vegetable juice pressing and dewatering, food residue drying, wine bran and vinegar bran solid-liquid separation
Mining & Coal Washing: Mineral slurry filtration, ore sludge and coal washing dewatering
Pulp & Paper: Pulp washing and paper machine drying conveying
Chemical & Pharmaceutical: Chemical material and pharmaceutical residue filtration & dewatering
Building Materials: Artificial board, MDF and OSB production drying
Textile Printing & Dyeing: Fabric drying and water removal
PACKAGES
PRODUCT COMPARISON
Item | Polyester Spiral Press Belt | Woven Filter Cloth | Plate & Frame Press |
Structure | Monofilament spiral + adjustable filler yarns | Interwoven polyester/nylon fibers | Solid plate + filter cloth liner |
Air Permeability | Precise & adjustable, low leakage | Unstable, subject to weaving density | Pressure-driven, no adjustment |
Cleaning | Smooth surface, anti-fouling & easy rinsing | Easy clogging, difficult cleaning | Frequent cloth replacement needed |
Service Life | Long lifespan, abrasion & chemical resistant | Medium life, easy seam wear | High investment & maintenance cost |
Best Use Case | Continuous automatic belt filter presses | Batch vacuum filtration | High-pressure intermittent dewatering |
CLEANING & MAINTENANCE
Polyester monofilament material has slight adsorption to fine sludge, fibers and particulate impurities. Standard daily maintenance can effectively preserve stable filtration efficiency and maximize the service life of the spiral press filter belt:
Rinse thoroughly with high-pressure water after daily operation
Adopt targeted cleaning for sludge, fiber and oil contaminants
Avoid over-temperature baking and long-term excessive extrusion
Minor local damage supports on-site repair to save costs
CUSTOM SERVICE & ADVANTAGE
As a professional manufacturer and supplier of industrial polyester filter belts, we provide one-stop customized solid-liquid separation and dewatering solutions. All spiral press belts can be tailor-made according to your equipment parameters, working pressure, operating temperature and filtration precision requirements. We implement strict quality control systems, support stable batch production and supply, and provide reliable global after-sales service.
FAQ
Q1: Is the belt food grade?
A: Absolutely yes. Our polyester spiral press filter belts strictly comply with FDA food-grade safety standards, safe for all food processing, fruit and vegetable pressing and edible material dewatering processes.
Q2: Can I get customized sizes?
A: Full personalized customization is supported. We can adjust the belt width, thickness, spiral loop type and air permeability to fully adapt to your equipment and working conditions.
Q3: What is the working temperature range?
A: It features a wide temperature adaptation range: -75°C to +150°C under dry working conditions, and a maximum resistant temperature of 70°C in wet and humid working environments.
Q4: How about the service life?
A: Thanks to the seamless integral structure and high wear-resistant material, our spiral filter belt achieves 30%-50% longer service life than traditional woven filter cloths under the same industrial working conditions, greatly reducing your replacement and maintenance costs.
