Polyamide, polyester and polypropylene could used as filter cloth but only is PTFE (Polytetra fluoroethylene) for producing filter bag as it truly is resistance to all chemicals and it is actually biostable, biocompatible and hydrophobic in nature. Due to lower melting issue, reduced thermal conductivity and lower load carrying https://diaphragm-filter-press73836.blogtov.com/12073768/the-definitive-guide-to-sludge-filter-press