Doctor blade for paper coater
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United States of America Patent
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Oct 25, 1988
Grant Date -
N/A
app pub date -
Apr 6, 1987
filing date -
Apr 6, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved doctor blade, for use at a downstream end of a pressurized coating material application zone of a paper coater, has a tip portion of a limited length and first thickness and a major body portion of a second and increased thickness. The increased thickness of the major body portion enables the doctor blade to resist flexure caused by variations in pressure of the coating material in the zone, so that the blade tip more uniformly meters and levels coating on a paper web. Also contemplated is an arrangement for clamping the blade at the downstream end of the application zone, in a manner to minimize flexure of the blade in response to variations in pressure of the coating material in the zone.
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