disc screens conveyor baler DISC SCREENS The implementation of a secondary disc screens such as the Mach One Finishing Screen has been successful in creating a cleaner container stream by removing a greater percentage of the fiber from the containers while at the same time screening out the fines. This finishing disc screens helps reduce residue while providing a cleaner stream to the sorters. Separator disc screens need to be designed with built in flexibility to allow for changes in product and climatic conditions. Features such as variable angle screen decks, an easily adjustable screening surface with replaceable split discs and variable speed drives play a role in the efficiency of the separator.