Name: Polyester needle felt
Material: Polyester
Weight(gsm): 500
Thickness (mm): 1. 5
Tensile strength (n/5x10cm): Warp: 1000 weft: 1100
Tensile elongation (%): Warp: <35 weft: <40
Permeability(10-3m3/m2. S): 150~350
Working temperature : Continuance: 120 instant: 150
Surface treatment: Singeing, calendering

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