Rewetting of paper products during drying

Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...

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162198, 162205, 162202, 34444, 34446, D21F 300, D21F 500, F26B 1318, F26B 1314

Patent

active

054704367

ABSTRACT:
The specification discloses an improved method for drying a paper or paperboard web emerging from the press section of a papermaking machine as it traverses a dryer unit. The method comprises continuously rewetting the web across its width during the initial web drying stage when the web has a solids content of no more than about 65 wt. %. The method improves the water removal rate and decreases the shrinkage rate of the web during drying.

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