METHOD AND DEVICE FOR PRODUCING OR TREATING A WEB OF FIBROUS MATERIAL
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United States of America Patent
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Issued Date -
Mar 14, 2024
app pub date -
Nov 21, 2023
filing date -
May 28, 2021
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Abstract
A process for the production or treatment of a fibrous web, in particular a paper or cardboard web, includes the following steps: a. drying of the fibrous web in a dryer section; b. subsequent cooling of at least one first side of the fibrous web by way of convection cooling, whereby the fibrous web has a temperature of 65° C. or less on at least the first side after cooling, in particular 50° C. and less; c. apply steam to at least the first side of the fibrous web, in particular the temperature on the first side after steam application is at least 70° C., optionally more than 80° C. or 90° C.; and d. treatment of the fibrous web in at least one calendering nip.
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