Inverted blade metering unit
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United States of America Patent
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-
May 27, 1997
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Jul 3, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for coating a web with a coating material by applying a metered coating material onto the web and smoothing the applied coating material evenly onto the web with a flexible predoctoring blade. The coating material is applied to the web by the predoctoring blade in the form of a high velocity laminar flow in advance of the predoctoring blade. The coating mix is fed to a stem part of the flexible blade via an exit channel having a narrow opening. The loading of the flexible blade, acting as a smoothing device, is controlled in a cross direction of the web in order to control the cross directional profile of the applied coating web. The feed velocity of the laminar flow is at least one small m/sec.
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