リファイニング技術 Ｖ リファイナの現状と考え方について

Abstract

Paper has its own physical characteristic required for each type of paper grade. So it is necessary to treat the fibers in order to give the suitable physical characteristic to it for each type of paper in the stock preparation process.This process consists of the following steps : (1) Pulping (2) Refining (a kind of beating) (3) Mixing of stocks and (4) Addition of filler, dyes and chemicals etc., and refining is the most effective for improving the fiber guality. That means the refining is the main part in the stock preparation process because of settling the paper quality.Therefore, the people relative to the stock preparation system should do the best for refining.Refining is the process to prepare the stock for paper making and to make the stock suitable for the final product of paper by giving a machanical action to the stock, i. e. pulp, and has the effect on both paper quality and operating cost.As the paper machine has developed into higher speed and larger, because of satisfying the higher-productility and mass-production generation, the refiner (originated as beater) has developed into Double Disk Rifiner suitable for higher efficiency and mass-production.This article introduces the Double Disk Rifiner mainly used at present and explains about its design concept, operating mechanism and how to consider the refining technology including operating data.