Name: Polypropylene needle felt
Material                   : Polypropylene
Weight(gsm)                : 650
Thickness (mm)             : 2. 0
Tensile strength (n/5/10cm): Warp: 1200 weft: 1300
Tensile elongation (%)     : Warp: <50 weft: <55
Permeability(10-3m3/m2. S) : 100~350
Working temperature        : Continuance: 90 instant: 110
Surface treatment          : Calendering

chemical character
anti-acid                  : Excellent
anti-alkali                : Excellent
anti-anrasion              : EXcellent
hydroly sis stablility     : Excellent