Polypropylene Needle Punched Felt
Polypropylene fiber is the lightest and the most easily to process among all the synthetic fibers. It can stand for 90^oC . Acid proof and alkali proof is great. So it generally used for gas-solid separation and liquid ---solid separation under 100^oC and the environment of strong alkali or strong acid. For liquid-solid separation, polypropylene needle punched felt is used in frame and plate filter presses, vacuum filters, belt filter presses, and centrifuge filters. It has stability, high tenacity, and small elongation. Because of its smooth and porous surface and large air permeability, it has the characters or small vacuum resistance, energy conservation and easiness for washing. In those industries which need precise