Operating Experience of Surface Coated Dryer Cylinder at PM9

Abstract

PM9 at the Niigata Mill started commercial operation in September 2008, and is producing mainly A3 coated paper as a wide, high-speed, and light weight papermaking machine. Taking advantage of this wide and high-speed process, PM9 continues to grow with the goal of being a machine with high productivity and cost competitiveness.

Twelve years have passed since the commercial operation of PM9 started, and due to the aged deterioration of equipment, operation and quality issues have come to occur. Among them, the deterioration of the surface of the dryer cylinder caused a decrease in operation efficiency and product quality. In 2017 and 2018, the surface coating of the dryer cylinder was applied for two periods. In this paper, the operating experience before and after the dryer surface coating is introduced.