... ,Long life time 3,Enhance gas flow Polyester non woven fabric for filter bagProduct Name Polyester Nonwoven Fabric Physical PropertiesFiber PolyesterScrim PolyesterMembrane ePTFE MembraneWeight/Tolerance ... , PPS, Nomex, P84 and so on.PTFE membrane can be laminated on dust filter cloth and dust filter bags for high ...