QualiFlex QRun: Two Case Studies, Paper360º September/October 2020
The press section’s main function is the mechanical dewatering of the paper web. The press configuration also determines surface properties such as smoothness and two-sidedness. The goal in the press section is to achieve the greatest possible dewater-ing, since mechanical pressing is much more economical than drying by heat.
n addition, higher dry content contributes to higher web strength; this reduces the risk of web breaks during transfer to the dryer section and during the entire operation. The paper web enters the press section with a dry content of 15-22 percent and leaves the section with a dry content of 40-55 percent.
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