Marusumi Starts up Two IntensaDrums at Mill in Japan
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Marusumi Paper, Japan, has successfully put two Voith, Germany, IntensaDrums into operation. Both recycled fiber pulping drums were installed in only three weeks.
"We were able to start up the machines before the actual schedule and are very satisfied with their performance. Our expectations were exceeded," said Toshikazu Ichihara, GM of facility and construction at Marusumi Paper. In comparison with the previous pulping drums, the fiber content in the reject discharge is reduced by 90%, and the accept flake content is reduced by a striking 35%.
In the pulping part, special bars lift the suspension and let it fall back onto the drum body. The recovered paper is thus gently pulped. Directly before the screening zone, a screenable stock consistency is immediately achieved due to an innovative addition of dilution water. The screening surface is thus used more efficiently and fewer fibers are lost. Due to the perforated screen plates in the screening part, fibers and contaminants are easily separated. Due to the largest possible and open access for the reject discharge, the contaminants are removed from the screening zone in an operationally reliable and trouble-free fashion.
"One of the reasons why we chose the IntensaDrum from Voith is its design. The running rings are made of high strength forged steel and wear less. We thus expect a lastingly stable run. Furthermore, we appreciate the many years of successful cooperation with Voith," Toshikazu Ichihara added.
Due to the wear-free seal between the inlet chute and the drum, the inlet chute is virtually maintenance-free. This leads to less downtime and thus reduces overall production costs. Also, the occupational safety is improved. Different than with other pulping drums, personnel can enter and leave the drum through the rear opening without any problem. A dangerous entry through the inlet chute is no longer necessary.
Marusumi Paper is one of the largest paper producers in Japan. The company produces mainly copy and writing paper, as well as newsprint and packaging paper.
