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

Fourdrinier

The most traditional paper-forming equipment is the single-forming-fabric Fourdrinier paper machine. On a Fourdrinier machine a wide jet of dilute furnish is applied from a headbox onto the surface of a continuously moving wire screen. Water is removed by gravity and with the help of hydrofoils (or alternatively, table-rolls), vacuum boxes, and vacuum applied at the couch roll. A dandy roll (screen cylinder) or a top-wire may be used to make the sheet more uniform. The name Fourdrinier has been passed down from the English entrepreneurs who first commercialized the continuous forming machine invented by Louis Robert.

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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 .