Date of Award
Bachelor of Science
Pulp and Paper Technology
Dr. Robert A. Diehm
The cold soda pulping process was developed by the Forest Products Laboratory, Madison, Wisconsin, around 1950. It is a high yield process in which wood chips are softened by reacting with sodium hydroxide and then defiberized by mechanical refining. The yield is usually between 80%-95%.
Cold soda pulps with the following characteristics were used for this literature survey: The yields were between 80%-95%. The pulping temperatures were less than 40°C. The pulping operations were conducted under atmospheric pressure.
Estes, Timothy K., "Effect of Pulping Time on the Chemical Composition of Cold Soda Pulp" (1962). Paper Engineering Senior Theses. 153.