Development and operating experience of the newest kneader

Abstract

Nippon Paper Group, Inc. has prepared its "Group Vision 2015", which calls for becoming one of the top five pulp and paper company in the world, with a view to realizing stable and high revenues in our domestic businesses and a full-scale expansion of our businesses overseas over the next ten years. Then, we installed the N6 paper machine in the Ishinomaki Mill of Nippon Paper Industries Co., Ltd. as a first step of our vision, which is mainly producing a light-weight coated paper and an ultra light-weight coated paper, and started its operation in November, 2007. We also installed the new de-inking pulp plant which is called "HDIP-2" in order to supply high quality deinking pulp to N6 paper machine. Regarding the installation of the HDIP-2, we designed its process to optimize the efficiency of deinking and reject system in relation to becoming poor quality of old paper in the near future. Especially, we have developed a newest 4-shafts kneader "UV-Breaker" with Aikawa Iron Works Co., Ltd. and installed it as a coarse kneader in the HDIP-2 process in order to manage any old papers with UV printing. In this report, we show our development and operating experience of the newest kneader.