Metering system for an apparatus for coating webs of material such as paper, paperboard or cardboard webs
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United States of America Patent
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-
Apr 30, 2002
Grant Date -
N/A
app pub date -
Oct 8, 1999
filing date -
Oct 9, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A metering system for the coating of webs of paper and cardboard uses a doctor bar received in an elastic bed which is urged toward the surface to be coated by a pressurizable bladder subdivided into compartments. An elastic continuous member between the diaphragm and the bed equalizes the pressure so that sudden changes in pressure in the regions between the compartments are eliminated.
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