D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/22
D21F 5/04 (2006.01) D21F 7/00 (2006.01)
Patent
CA 1116844
A METHOD AND APPARATUS FOR UNIFORMLY DRYING A CONTINUOUS WEB OF CELLULOSIC FIBERS Abstract of the Disclosure A method and apparatus used in the uniform drying of a continuous web, such as a sheet of paper or paperboard. A newly formed web of paper of wet cellulosic fibers and the necessary additives is initially directed through a press section where excessive water is squeezed from the web to reduce its moisture content to about 50-80 percent, by weight, for subsequent passage through a dryer section wherein the moisture content is further reduced to anywhere between 3 and 15 percent, depending on the quality of the paper being processed. The moisture content profile of the nearly dry web of paper is constantly monitored adjacent the discharge end of the dryer section for dry streaks which occasionally occur in the web. Moisture is added accord- ingly to the web when the web is relatively wet and has a moisture content of at least 25 percent to eliminate further dry streaks and provides a paper product which has a uniform moisture content.
342507
Macrae & Co.
Midland-Ross Corporation
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