Operating Experience of MJ Turn Bar

Abstract

Since NO. 7 PM (Paper Machine) of Hachinohe Mill, Mitsubishi Paper Mills Ltd. began production in 1997, many kinds of paper products have been manufactured. Especially, woodfree light weight coated paper has such a good quality that the production of woodfree light weight coated paper is dramatically increasing. While we tried to speed up NO. 7 PM in order to increase the production, we got a serious problem (release problem) which occurred at the release point of coated paper from the Symsizer^® application roll. The release problem caused the unevenness of coated layer and prevented to increase the machine speed.
At last we decided to install “MJ Turn Bar^®” to NO. 7 PM in order to improve the problem. Then it was already introduced on October 2003 and it's been working well. “MJ Turn Bar^®” could make web releasing stability at the release point from the application roll and enable us to increase the machine speed.
In this paper we report about our operating experience of “MJ Turn Bar^®” that enabled us not only to keep the quality of woodfree light weight coated paper but also to increase the productivity.