Code: PTFE Needle FeltThickness (mm) : 1.2~1.5Weight (g/ã¡) : 720~850Weave Structure: Non wovenTensile Strength (N/5*20mm) : Warp ≥700 Weft ≥800Air Permeability (mm/s): 95~115 22~35(PTFE membrane)Temperatureï¼âï¼: 250~280 Finish Treatment: Heat setting