Features:
1) Low temperature resistance ( 88-120 °C)
2) Excellent resistant to hydrolysis, acids and alkalies
3) Smooth surface, more defined pore size and good air permeability
4) Lower fiber release, Lower density,High mechanical characteristics
Physical and Chemical Characteristics Of Polypropylene Needle Felt:
| Weight（gsm） | 500 | |
| Thickness(mm) | 2 | |
| Width(m) | ≤2.2 | |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability(L/m2.s) | 150-200 | |
| Tensile strength(N/5 cm) | warp | ≥1700 |
| weft | ≥2200 | |
| Tensile elongation(%) | warp | ≤20 |
| weft | ≤30 | |
| Heat shrinkage(%) | warp | ≤1.5 |
| weft | ≤1.0 | |
| Temperature(°C/°F) | Continue | 90 /194 |
| Instant | 120 /248 | |
| Anti-acid | Excellent | |
| Anti-alkali | Excellent | |
| Anti-abrasion | Good | |
| hydrolysis stability | Excellent | |
