Hachinohe mill established since 1966 has five coaters and two of them are on-machine coaters. No.5 blade coater has been operated since 1988 and the fastest actual operating is 1,575 m⁄min. It produces about 650 ton of coated paper per day.
In this report we refer to three operative and technical problems and solutions to archive faster operation of No. 5 coater.
1) Technology of splicing wide rolls on high speed operating
2) Material and dimensional optimization of blade
3) Renewal of quality monitoring and controlling system Furthermore two new technical topics are introduced.
4) Development of process technology for 2,000 m⁄min operation
5) Application of CFD (Computational Fluid Dynamics) to coating process
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