Paper machine headbox with longitudinally shiftable contoured wall
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United States of America Patent
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-
Feb 18, 1997
Issued Date -
N/A
app pub date -
Jul 5, 1995
filing date -
Nov 26, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A headbox of a machine for producing a fiber web from a pulp suspension which travels in a flow direction through the headbox has a first chamber into which a pulp suspension is introduced, a second chamber provided downstream of the first chamber, and at least two walls provided in a region between the first and second chambers so that the pulp suspension flows between the two walls. Each of the two walls has a non-planar, contoured surface to generate turbulence in the pulp suspension flowing between the two walls. The headbox also includes means for longitudinally shifting at least one of the two walls with respect to the other wall to control the turbulence generated in the pulp suspension.
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Family
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Cited Art Landscape
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