anti-static needle punched felt 1.polyester staple fiber 2.polyester anti-static scrim 3.weight: 500gsm chemical dust and coal dust is often explosive or cause fire, when the concentration reach its explosion limit and meet the static. Therefore the needle punched felt, which is used to make bags containing these dust must be antistatic. Features: Product name:anti-static polyester needle punched felt(anti-static scrim) Material: polyester staple fiber Scrim:polyester anti-static scrim Weight: 500gsm Thickness: 1.8mm Tensile strength (n/5 x 10cm): a) Warp: 1,000 b) Weft: 1,200 Tensile elongation: a) Warp: <20% b) Weft: <25% Permeability (10-3m3/m2.S): 150 - 350 Working temperature (oC): a) Continuance: 130 b) Instant: 150 Surface treatment: singeing, calendering, heat setting