NONWOVEN FILTER CLOTH: PTFE/P84/FMS/Nomex/PPS/GLASS FIBER PP/PET/ACRYLIC/PA ECT. Polypropylene needle punched felt for liquid filtration The PP needle punched felt, which used in liquidsolid filtration, selects different specifications of PP fibers and ordinary staple scrim or high strength filament scrim. That grams different from 350g/m2~700g/m2 and thickness different from 1.2mm~4.5mm all can ...