China Candle Filter Cartridge Application in Spunbond Nonwoven Supplier, Company

In the production of spunbonded nonwoven fabrics, to ensure the smooth progress of the spinning process and reduce the occurrence of phenomena such as filament breakage and material dripping, two sets of filtration devices are generally installed. The first filter (coarse filter) is installed between the screw extruder and the metering pump. Its main function is to filter out larger impurities to extend the service life of the second filter device, protect the metering pump and spinning pump, increase the back pressure of the extruder, and thereby facilitate the exhaust and plasticizing of the material during compression. The second filter (fine filter) is installed in the spinning assembly. Its main function is to filter out finer impurities, crystal points, etc., prevent the spinneret from clogging, ensure the smooth progress of spinning, and improve the quality of the fibers.

The melt filter element is a kind of rod-shaped structure which sintered from five layers of metal wire mesh. At the center of the rod is a reinforcing skeleton, which withstands the pressure during filtration. The initial pressure used for the filter element is 2.156×10⁶Pa, and the pressure during switching is 8.33×10⁶Pa. The filter elements come in several models such as X6, X7, X11, and X12, and the mesh diameters range from 20μm to 40μm.

The pore size of the mesh is the filtration accuracy of the filter element.