Defibering OCC in High Dry Content, 2006 Engineering, Pulping, & Environmental Conference

Please Note: This document will be available in PDF format in the "My Electronic Documents" link on the home page once your order has been completed. Please make sure you have the latest version of Acrobat Reader. Click on the Acrobat Reader icon to check for the latest version, it’s FREE. To print a hardcopy of a PDF file correctly you must have a postscript printer. If you are not sure if your printer is a postscript printer please refer to your owner’s manual.



The aim was to study possibilities to defiber American old corrugated container (AOCC) in high dry content. Dry defibering of OCC could offer interesting new possibilities especially if screening and cleaning, too, could be performed in high dry content. OCC was defibered using a pilot-scale hammermill. Various operating parameters and conditions were tested. Pulp properties were compared with wet disintegrated reference samples evaluating the strength properties of paper, fiber morphology and freeness. At best, fiber length remained near the reference but the strength properties were decreased. The results of the study suggest that dry defibering can be used to produce bulky material that has good drainage properties.