Under what circumstances should the filter be used in extrusion production and how should it be used?

Filter is usually used for products with high quality requirements or high plasticizing pressure occasions, such as the production of cables, transparent products, films, medical tubes, monofilament, etc., and for extruding UPVC and other materials with large viscosity and poor thermal stability, generally do not use filter.

The filter is usually copper or stainless steel mesh, the fineness of the net is 20 to 120 mesh, and the number of layers can be 1 to 5 layers. The mesh number of the filter should be selected according to the viscosity of the processing material, generally, the material with large viscosity should be selected with a smaller mesh number of filters, and the material with low viscosity should be selected with a larger mesh number of filters. When using multi-layer filter, the thin can be placed in the middle, both sides of the thick, if there are only two layers, the thick should be placed by the shunt plate, so that the thin can be supported to prevent the material flow from breaking through.
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