Paper and Cardboard
Many companies in the Paper Printing & Packaging industry have large quantities of waste from border/edge strips, confetti (hole punching) and dust produced during production. With reliable and more efficient recycling, additional revenue is generally created from waste material collected.
These various waste streams are transported via a Keller pneumatic transport system to either press containers or balers. The dust fractions are then transferred to a dust collector installation. If desired, the dust can be diverted to a briquette press.
Continuous edge strips or trims are usually cut into pieces as quickly as possible at the extraction/collection point. Either a cutter mill (cutter) is provided on the extractor hood, or the edge strips are guided to a chopper fan.
Once the endless strips are chopped, they are further processed as already described above.
As a variant, there is the Keller Wet vac separation system. In this case, the endless edge strips are sucked into a filter unit. This filter unit is located on top of the pulp make-up tank. The edge strips are returned directly to the pulp make-up tank via a cyclone operation with a water supply. Such systems are generally used in the production of paper / cardboard.
During the design of the paper trims and dust collection systems, extensive attention is paid to the implementation and design of the extraction hoods. Similarly, a thorough risk analysis is made about ATEX implications.
With the Keller dust collector systems, many companies have seen improved productivity through reliable, automated scrap removal and operators relieved of the waste stream processing. In this way, their time is optimally used for the focus on their process. Improved energy efficiency by returning clean air back into your production environment is another consideration.