Apparatus for influencing the thickness and gloss and/or smoothness in the treatment of fiber material webs
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United States of America Patent
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Oct 7, 1997
Grant Date -
N/A
app pub date -
Feb 6, 1996
filing date -
Jun 24, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus for treatment of a fiber material web with a press gap formed by rolls, wherein at least one of the rolls comprises an adjustable deflection roll with a flexible roll jacket supported in the pressing force plane on a plurality of support elements. A plurality of independent pressing force correction sections that at least substantially do not influence one another are formed over the length of the press gap by the cooperation of the support elements, in particular, hydraulic support elements and associated sections of a roll jacket having inadequate compliance. Preferably the width of the individual correction sections along the press gap lies in the region of 25 mm to 130 mm, and preferably amounts to approximately 50 mm.
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