Polypropylene needle punched felt
The PP needle punched felt is widely used in liquid-solid filtration. Besides some properties as ordinary filter felt have, the properties of anti-acid, anti-alkali and lower soften point of PP are better than polyester, and its stability of water solution is excellent, so PP needle punched filter felt is often used in the field with fume temperature under 100℃, the density of acid and alkali is high or the field of filtering solid from liquid that the density of acid and alkali is high.
Features and Benefits:
· Smooth surface, more defined pore size and good air permeability
· Low temperature resistance ( 88-110 ℃)
· Excellent resistant to hydrolysis, acids and alkali
· Low fiber release, low density
· Reasonable price
· High mechanical characteristics
Applications:
· Galvanic industry and Chemical industry
· Prefiltration of solvents and acids
· After-filtration for non-critical filtrations
· Liquid-solid separation with strong acid and alkali conditions filter press
· Air filtration under 100℃
Composition | PP/PP ordinary scrim | PP/PP high strength scrim |
Weight(g/m2) | 500 | 550 | 650 |
Thickness(mm) | 2.1 | 2.3 | 2.5 |
Air permeability(L/m2/s) | 300 | 250 | 200 |
Tensile strength(N/5×20cm) | Warp | >960 | >1200 | >1500 |
Weft | >1060 | >1500 | >1800 |
Tensile elongation(%) | Warp | <35 | <35 | <35 |
Weft | <55 | <55 | <55 |
Working temperature(℃) | 90 | 90 | 90 |
Short working temperature(℃) | 110 | 110 | 110 |
Anti-acid | Excellent | Excellent | Excellent |
Anti-alkali | Excellent | Excellent | Excellent |
Anti-abrasion | Excellent | Excellent | Excellent |
The stability of water solution | Excellent | Excellent | Excellent |
Finishing treatment | Singeing or high temperature press | High temperature press both sides |
