Polypropylene Needle Punched FeltMaterialPolypropyleneWeight (g/m2)450-600Thickness (mm)1.8-2Air permeability (L/?/S)80~500Tensile Strength (N/5×20cm)longitude=800Latitude=1000Elongation at Break (%)longitude<50Latitude<60Temperature (?)=90TreatmentCould be Water proof, Anti-static, PTFE membrane
Polypropylene Needle Punched Dust & Powder Filter Cloth