Retention Aid for Fillers Using in the Process of Deinked Pulp Manufacturing

Abstract

An inorganic particle called filler is added to printing paper for the purpose of improving optical characteristics and printability of the paper. However, the most of fillers are detached from pulp to water in the process of deinked pulp manufacturing, and it becomes the industrial waste in drainage process.
In such a situation, we started our research based on a concept to reduce the amount of waste in the drainage process, and developed “retention aid for fillers using in the process of deinked pulp manufacturing”. We think that this development could improve the retention of fillers dramatically compared with other coagulant and flocculant due to a formation of ionic macromolecule and an improvement of the interaction between this chemical and fibers, fines and fillers.
In this report, we introduce a characteristic and an effect of this chemical with showing application results at the actual machine.