Method for making coated filter cloth through wet process

The invention discloses a method for making a coated filter cloth through a wet process. A technical scheme adopted in the invention is characterized in that the method comprises the following steps: calendering the coated surface of a filter cloth, coating or dip-coating the calendered surface of the filter cloth with a coating agent of an organic polymer material having the advantages of high porosity, smooth surface, good elasticity and good wear resistance through a coating or dipping device, immersing the coating agent coated filter cloth in a coagulation bath, controlling and adjusting the temperature of the coagulation bath and the detention time in order to realize required porosity and film layer thickness, washing with water, and drying. The obtained coated filter cloth changes deep filtration to surface layer filtration, so a filtered material does not aggregate in the apertures between yarns of the filter cloth, the obstruction of the filtered material in the apertures of the filter cloth is avoided, the possibility of the obstruction of the filter cloth by the filtered material is greatly reduced, the filtering efficiency is improved, the energy consumption of a filtering system is reduced, the filter cloth obstruction is reduced, the service life of the filter cloth is prolonged, and the production cost is reduced.