Ekstrudeerimisvõrkud

Ekstrudeerimisvõrkud, also known as extrusion screens or screen packs, are essential components in the plastic and polymer extrusion process. They are typically made from woven wire mesh and are designed to be placed within the extruder's die or breaker plate. Their primary function is to filter out contaminants from the molten polymer before it is shaped into a final product.

These contaminants can include unmelted polymer pellets, gels, dirt, and other impurities that could cause defects in the extruded material, such as lines, specks, or holes. By trapping these foreign particles, ekstrudeerimisvõrkud ensure a smoother, more consistent, and higher quality extruded product. They also help to reduce die buildup and improve the overall efficiency of the extrusion process.

Ekstrudeerimisvõrkud come in various mesh sizes, material types, and configurations. The mesh size is chosen based on the specific polymer being processed and the required level of filtration. Common materials include stainless steel, which offers good corrosion resistance and durability. They can be supplied as single screens or as multi-layer screen packs, where different mesh sizes are combined to provide progressive filtration. The correct selection and maintenance of ekstrudeerimisvõrkud are crucial for optimal performance and product quality in extrusion operations.