Filter impurities: plastic raw materials may be mixed with various impurities during production, such as dust, metal chips, gel particles, etc. The screen changer filters the plastic melt through a filter screen, preventing these impurities from entering downstream equipment of the extruder, such as molds, thereby improving the quality of plastic products and reducing product defects caused by impurities, such as surface defects, bubbles, holes, etc.

Improving melt uniformity: During the filtration process, the screen changer can not only remove impurities, but also have a certain shearing and mixing effect on the plastic melt. This helps to make the temperature, pressure, and flow rate of the plastic melt more uniform, improve the rheological properties of the melt, and make the performance of the product more stable and consistent.

Protection equipment: If impurities enter the screw, barrel, or mold of the extruder, it will exacerbate the wear of these components and reduce the service life of the equipment. The screen changer can intercept impurities, reduce their wear and corrosion on equipment, thereby lowering maintenance costs and downtime, and improving production efficiency.

Continuous production: The screen changer allows for the replacement of the filter screen without stopping the extruder. When the filter is clogged to a certain extent, affecting the extrusion process, the operator can switch to the backup filter through the screen changer to continue production without interrupting the entire production process, greatly improving the continuity and efficiency of production.

Adapt to different production needs: Different plastic products have different requirements for the purity and quality of plastic melt. By replacing filters with different mesh sizes and materials, the screen changer can adapt to various production needs, meet the quality standards of different products, and increase the flexibility and applicability of plastic extruders.