The main weaving methods include plain weave, twill weave, Dutch weave, and herringbone weave. Twill weave, due to its stable structure, uniform mesh openings, and flat surface, is widely used in high-precision filtration scenarios and can effectively extend service life.
The pelletizer filter mesh is a key component in pelletizing processes in industries such as plastics and chemicals. Its core function is to achieve impurity separation from molten materials through physical interception, directly affecting the purity and molding quality of the final pellets. When selecting, factors such as material corrosion resistance, filtration precision, mesh surface structural stability, and operating temperature range must be comprehensively considered to match the processing characteristics of different materials.
Taking stainless steel as an example, 304 or 316 stainless steel mesh contains chromium and nickel elements, forming a dense oxide film. In environments below 40°C, it can resist long-term corrosion from acidic or alkaline components in plastic melts, preventing filtration failure caused by mesh opening enlargement due to rust. Its plain weave process forms regular mesh openings through vertical crossing of warp and weft wires. Combined with a 600 mesh design (aperture approximately 0.04 cm), it can intercept particulate impurities larger than 600μm in diameter while maintaining smooth melt flow, reducing pressure fluctuations caused by mesh clogging. The flat mesh surface prevents material residue and reduces maintenance costs associated with frequent filter mesh changes.
Filtration precision and process compatibility are another key indicator. Filtration precision of 600μm is suitable for scenarios with high requirements for particle uniformity, such as removing unmelted powder or crystalline particles in plastic modification pelletizing. When processing high-viscosity materials (e.g., engineering plastics), higher mesh count filters are needed to improve interception efficiency, but melt flowability must be evaluated simultaneously to avoid excessive extrusion pressure caused by overly fine mesh openings. In addition, the specification design of 1.5m mesh width and 30m mesh length can meet continuous production needs, reduce the frequency of shutdown for mesh changes, and increase overall production capacity.
In practical applications, the selection of filter mesh must also consider the specific operating conditions of the pelletizer. For example, when processing plastics containing fillers, stainless steel mesh with stronger wear resistance should be prioritized to resist wear of mesh wires by filler particles. If the processing temperature approaches or exceeds 40°C, the temperature resistance limit of the material must be evaluated, and high-temperature alloy filter mesh should be selected if necessary. Through coordinated matching of material, precision, and process parameters, dual optimization of filtration effect and equipment life can be achieved