Polyvinyl Alcohol (PVA) Filter Cloth for Solid-Liquid Separation
Polyvinyl alcohol (PVA) filter cloth—also known as Vinylon filter cloth—is widely used for solid-liquid separation in highly alkaline operating environments due to its excellent alkali resistance, good mechanical strength, and hydrophilicity. It maintains stable filtration performance over long periods in strongly alkaline media and resists degradation caused by alkali corrosion, making it an ideal filtration material for many processes involving alkaline slurries.
- Its uniform woven structure effectively captures particles while maintaining high liquid permeability, resulting in faster filtration speeds and higher separation efficiency.
- The inherent hydrophilicity of Vinylon fibers facilitates rapid liquid penetration, reduces filtration resistance, and promotes the formation and release of the filter cake; this shortens filtration cycles and boosts overall process productivity.
Description
| Product Code | Tensile Strength (N/5×20 cm)Warp / Weft | Thread Density (Ends/10 cm)Warp / Weft | Thickness (mm) | Weight (g/m²) | Air Permeability (L/m²·s @ 200 Pa) | Weave |
|---|---|---|---|---|---|---|
| 295-1A | 4302.2 / 2138.4 | 100.0 / 64.6 | 1.56 | 555.8 | 43.7 | Plain |
| 295-102 | 1706 / 1556 | 188 / 141 | 0.71 | 360.0 | 29.0 | Plain |
| 295-104 | 1591 / 1141 | 232.4 / 164 | 0.58 | 246.9 | 40.5 | Plain |
| 295-1 | 2410 / 2630 | 157 / 110 | 0.95 | 50.8 | 15.0 | Plain |
Typical Applications
Vinylon filter cloth is suitable for a wide range of solid-liquid separation equipment, including plate and frame filter presses, chamber filter presses, vertical filter presses, and vacuum filters. Typical applications include:
- Caustic soda (NaOH) production
- Alumina and bauxite processing
- Alkali liquor filtration in the chemical industry
- Solid-liquid separation in mining and metallurgy
- Alkaline wastewater treatment
- Filtration systems for other highly alkaline slurries