Polypropylene felt filter cloth is a kind of non-woven fabric which has no warp and filling lines and easy to tailor and sew. It is endowed with the profits of woven polypropylene cloth such as excellent resistance to chemicals, acid and alkali solutions and elevated temperature as well as great dimensional stability. Calendered surface contributes to cake release and shorten filter cycle. Its normal working temperature is up to 190 °F. In addition, polypropylene cloth can be reused and will not produce second pollution to the environment.