What is papermaking? What materials are used to make paper? How is raw material turned into paper pulp? What happens to paper pulp during the papermaking process?

For many decades the sulfite process was the leading process for the pulping of wood. Since 1940, however, the kraft process has taken a predominant position, and sulfite mills are no longer being …

Jan 30, 2026 · Before 1798, Nicholas-Louis Robert constructed the first paper-making machine. Using a moving screen belt, paper was made one sheet at a time by dipping a frame or mold with a screen …

The rolls of paper produced by the paper machine must still undergo a number of operations before the paper becomes useful to the consumer. These various operations are referred to as converting or …

Kraft process, (from German kraft, “strong”), chemical method for the production of wood pulp that employs a solution of caustic soda and sodium sulfide as the liquor in which the pulpwood is cooked …

The rolls of paper produced by the paper machine must still undergo a number of operations before the paper becomes useful to the consumer. These various operations are referred to as converting or …

Pulps are named after the processes used to make them. The kraft process, first discovered in 1874, accounts for 80 percent of the world’s chemical pulp production. Kraft (from the German word for …

Calendering, process of smoothing and compressing a material (notably paper) during production by passing a single continuous sheet through a number of pairs of heated rolls.

Jan 1, 2026 · Important improvements were subsequently made to Cai’s papermaking process by his apprentice, Zuo Bo, and the process was rapidly adopted throughout China, from which it eventually …

Although the paper machine symbolizes the mechanization of the paper industry, every step of production, from the felling of trees to the shipment of the finished product, has also seen a dramatic …