Filter presses are widely used across mining, chemical, food, pharmaceutical, environmental, and industrial applications for efficient solid–liquid separation. They provide high filtration efficiency, low cake moisture, and consistent performance, making them ideal for sludge dewatering, wastewater treatment, chemical purification, and recovery of valuable solids. The filter cloth plays a crucial role in the solid-liquid separation process, trapping solid particles while allowing clean filtrate to pass through.
Membrane and chamber (recessed) types differ in structure, working principle, efficiency, and final cake moisture content.
Chamber (Recessed) Filter Press
- Used in traditional recessed chamber plates.
- Cloth is mounted directly on the plate surface.
- Filtration relies solely on feed pump pressure.
Features
- Stable filtration performance
- Good cake release
- Suitable for medium-to-high solids content
Typical filter materials:
- Polypropylene (PP) woven fabrics.
- Polyester (PET) woven fabrics.
- Nylon (PA) woven fabrics.
Membrane Filter Press
- Used on membrane filter plates, which include an elastic membrane layer.
- After initial filtration, the membrane inflates (using air or water) to further squeeze the cake.
- Cloth must withstand extra pressing force.
Advantages
- Lower moisture in final filter cake
- Shorter filtration cycle
- Higher efficiency
Filter materials often require higher strength:
- High-strength PP woven cloth.
- Composite or multi-layer woven fabrics
- Special surface–treated fabrics.
Choosing Filmedia® filter press cloth
Choosing Filmedia® filter press cloth means choosing an efficient, reliable and affordable filtration solution, providing reliable support and guarantee for your production process. Our filter press cloths are an integral and key component of your production process.
- Efficient filtration performance: Our filter cloth adopts advanced material technology, with precise fiber structure and optimized pore size distribution, ensuring efficient solid-liquid separation. Whether it is suspended solids or impurities, they can be reliably captured and filtered, improving production efficiency.
- Excellent durability: The filter cloth has undergone strict quality control and testing, has excellent wear resistance and chemical corrosion resistance, and can withstand working conditions in high-pressure and high-temperature environments. This ensures the long-term stability and reliability of the filter cloth, reducing replacement frequency and maintenance costs.
- Wide Applicability: Our filter cloths are suitable for a variety of industrial filtration applications, including but not limited to water treatment, chemical production, food processing, etc. Whatever your production needs, we can provide tailor-made filter cloth solutions to ensure optimal filtration results.
- Convenient installation and replacement: The filter cloth design is simple and easy to use, and the installation and replacement process is quick and convenient. This greatly reduces downtime, improves production efficiency, and brings greater convenience to your production operations.
- Affordable: Our products have a longer service life and lower maintenance costs than traditional filter cloths. By extending equipment maintenance intervals and improving filtration efficiency, our filter cloths save you costs and enable more economical production operations.
Material properties
| Performance | Polyester fabric | Polyamide (Nylon) fabric | Polypropylene fabric | Polyvinyl Alcohol (PVA) fabric |
| Acid resistance | Excllent | Bad | Good | Not acid resistant |
| Alkali resistance | Resistant to weak alkali | Good | Excllent | Resistant to strong alkali |
| Conductivity | Bad | Good | Good | Generally |
| Elongation at break | 30-40 | 18-45 | 25-45 | 12-25 |
| Contractibility | Excllent | Good | Good | Bad |
| Wear resistance | Excllent | Excllent | Good | Good |
| Heat resistance | 170ºC | 130ºC | 90ºC | 100ºC |
| Soft spot | 230-240ºC | 180ºC | 140-150ºC | 200ºC |
| Melting point | 255-265ºC | 210-215ºC | 165-170ºC | 220ºC |
Size Specification
| Filter plate size D*L (mm) | Filter cloth size D*L (mm) | |
| 500*500 | 550*550 | |
| 630*630 | 700*700 | |
| 700*700 | 800*800 | |
| 800*800 | 900*900 | |
| 870*870 | 950*950 | |
| 900*900 | 1000*1000 | |
| 1000*1000 | 1100*1100 | |
| 1250*1250 | 1350*1350 | |
| 1500*1500 | 1600*1600 | |
| 2000*2000 | 2100*2100 | |