1. Feeding and Material Conveying: PVC materials enter the feeding system and are pushed forward by the rotating single screw. The screw continuously conveys the material into the barrel, ensuring stable and consistent feeding.
2. Single Screw Melting and Plasticizing: As the material moves through the compression section, the barrel heaters and the screw's mechanical friction work together to melt the PVC. The material is gradually transformed into a uniform molten state for stable extrusion.
3. Vacuum Degassing and Melt Filtration: The molten PVC passes through the vacuum degassing section, where moisture and volatile gases are removed to improve pellet quality. It then flows through a hydraulic screen changer, which filters impurities while allowing continuous production.
4. Hot cutting: Cut the PVC into required sizes
5. Cooling Drying: The purified melt is extruded through the die head and cut into uniform PVC granules by the water ring pelletizing system. The pellets are immediately cooled, centrifugally dried, and discharged for packaging or further processing.
6. Screening: The PVC granule screening system separates qualified pellets from oversized particles, fines, and agglomerated material after the pelletizing and cooling process. A vibrating screen or other suitable screening equipment can be configured according to the required pellet size and production capacity.
7. Finished PVC granules: The finished granules are ready for market.
