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In paper mill projects, deckle width is one of the most powerful decisions affecting capital cost, production capacity and long-term profitability. A wider deckle can increase output, improve machine utilization and reduce specific investment per tonne. But it can also increase building cost, utility demand, drying load, machine clothing cost, erection complexity, finishing bottlenecks and underutilization risk. This is why paper machine deckle should never be finalized only

Paper machine deckle selection is not only a width decision. It affects capacity, saleable output, trim loss, drying load, steam demand, utilities, finishing section, building layout, ETP capacity and project economics. This technical guide explains what paper mills should consider before finalizing deckle width for a new machine, expansion or second-hand machinery project.