Wet End Forming Equipment Rebuilds on Containerboard Machines for Cost Savings, 2012 PaperCon Conference

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Through fourdrinier table drainage equipment and top former upgrades, there are often opportunities for significant cost reductions through quality improvements and reduced energy usage on containerboard grades. Challenges that many machines face include decreasing furnish quality, increasing speeds, running wide grade ranges, and trends to lighter weights. Table configurations have evolved with adjustable features to provide flexibility to better handle the wide range of grade conditions typically seen on many machines. Top formers have also evolved with engineered geometries to handle higher flow capacities, improve formation, and provide strength enhancements. In this paper, typical rebuild opportunities for improvements on containerboard grades are discussed and case studies illustrating the implementation of these considerations are presented.