Polymer melt filter is essential for all the polymer handling process, as there are plenty of impurities in the polymer melt which can significantly affect the polymer product quality and even ruin the process like extrusion, molding injection or fiber / filament spinning.
The polymer melt filter is often made from stainless steel wire mesh or sintered metal fiber. Because these metal filter material can withstand high pressure caused by viscosity of the polymer melt and can be cleaned and reused after washing and cleaning. The cleaning process of the polymer melt filter may be abrasive cleaning, chemical solvent cleaning, burning / heating.
Micron rating of the filter element varies depending on the application. We can supply wire mesh filter screen pack with millimeter pore size for plastic recycling, while we can also produce stainless steel sintered metal fiber pleated filter cartridge with 3 micron absolute rating for fiber and film.
Wire mesh screen pack for screen changer
Screen changer for polymer extruder uses wire mesh screen as the filter element. The mesh screen can be single layer, multi-layer spot-welded, or even sintered wire mesh.