Bar coater, and bar coating method
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United States of America Patent
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Nov 6, 2012
Grant Date -
Sep 16, 2010
app pub date -
Mar 11, 2010
filing date -
Mar 13, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A bar coater includes: a bar for applying a coating liquid to a web; a support member which is arranged on a lower side of the bar so as to rotatably support the bar; a weir arranged at an upstream side of the bar, the weir having a leading end surface at its distal end portion to form a bead of the coating liquid in a space between the leading end surface and the web; a reservoir including the bar, the support member and the weir, the reservoir for accumulating the coating liquid; a pump for supplying the coating liquid to the reservoir; a liquid discharge passage through which the coating liquid excessively supplied to the reservoir is discharged; and a controlling device for controlling the pump so as not to cause distortion of a dynamic contact line which is formed at interface between the coating liquid and the atmosphere.
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