Type
1. Polyester filament yarn filter cloth
2.Polyester staple yarn filter cloth
Polyester filament yarn filter cloth compared with polyester staple yarn filter cloth
Filament yarn filter cloth: long and smooth, good air permeability.
Staple yarn filter cloth: short and not smooth, not good air permeability.
Specification of Polyester Filter Cloth
| MODEL NO | WEAVING | MATERIAL | DENSITY (radlx/10cm) | ||
| WARP | WEFT | WARP | WEFT | ||
| 120-7 | Twill | Staple fiber | Staple fiber | 256.4 | 212 |
| 734 | Twill | Staple fiber | Staple fiber | 231.6 | 168 |
| 3927 | Plain | Staple fiber | Staple fiber | 152 | 102 |
| 208 Cylinder | Twill | Staple fiber | Staple fiber | 271 | 286 |
| 740 | Satin | Staple fiber | Staple fiber | 306 | 206.2 |
| MODEL NO | WEIGHT (g/m2) | SPLITTING STRENGTH (N/5╳20cm) | SPLITTING AND ELONGATION(%) | AIR PERMEABILITY (mm/s) | THICKNESS (mm) | ||
| WARP | WEFT | WARP | WEFT | ||||
| 120-7 | 627.6 | 4498 | 4044 | 36.3 | 27.5 | 53.9 | 1.42 |
| 734 | 245.9 | 2072 | 1633 | 25.6 | 23.2 | 316 | 0.62 |
| 3927 | 524.1 | 4598 | 3154 | 46.8 | 24.8 | <20.7 | 0.9 |
| 208 Cylinder | 410.8 | 2788 | 1930 | 39.1 | 29 | 68 | 1.43 |
| 740 | 324.6 | 3175.8 | 2184.6 | 23.5 | 21.3 | 126.7 | 0.71 |
Property of polyester filter cloth
| Properties | Polyester | Kapron | Polypropylene | Vinylon |
| Acid resistance | Strong | Poor | Excellent | Not |
| Alkali resistance | Weak | Excellent | High | Strong |
| Electrical conductivity | Very poor | Fairly good | Excellent | Medium |
| Elongation at break | 30%-40% | 18%-45% | Better than polyester | 12%-25% |
| Wear resistance | Excellent | Excellent | Good | Fairly good |
| Thermal endurance | 170 °C | 130 °C | 90 °C | 100 °C |
| Softening point | 240 °C | 180 °C | 150 °C | 200 °C |
| M.P. | 265 °C | 215 °C | 170 °C | 220 °C |
Performance of Polyester Filter Cloth
(1) Resist strong acid and weak alkali.
(2) It’s stable to thick abioacid in low temperature,not dissolved in organic acid, but can be dissolved in thick vitriol and heated cresol.
(3) It’s easily hydrolyzed in strong alkali.
Applications of Polyester Filter Cloth
Dust collector or liquid-solid separation. Mainly used in food and beverage industry, pharmaceutical industry, non-ferrous metallurgy, chemical plant, building section,mining industry,etc., for the equipment of filter presses, centrifuge filters, vacuum filters, belt filter presses, etc.