The dual screen changer serves as the core equipment enabling non-stop continuous filtration in plastic pelletizing production lines. Mainstream models include dual-column, single-plate dual-station, and dual-plate dual-station types. It accommodates pelletizing of raw materials and recycled feedstocks such as PP/PE/PET/PA, ensuring stable impurity filtration while safeguarding pellet quality and production efficiency. Core Principle and Structure Core Logic: Dual stations operate alternately. W