Mini-Encyclopedia of Papermaking Wet-End Chemistry
Part Three: Equipment & Unit Operations

Dragging the Sheet

Papermakers use the word "dragging" to describe the situation in which a forming fabric is moving faster than the jet of stock coming from the slice. On many paper machines a minor amount of drag, say 1-3%, can improve formation uniformity. Dragging also tends to give fibers a preferential alignment in the machine direction. As a consequence, the machine-directional strength properties are expected to be higher than the cross-directional properties. The opposite of dragging is rushing.

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This page is maintained by Martin hubbe, Associate Professor of Wood and Paper Science, NC State University, m_hubbe@ncsu.edu .