| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress coating irregularities in a thin layer coating to coat uniformly in a web width direction. <P>SOLUTION: A bar coater 10 coating a continuously running web 18 with a coating liquid comprises a bar 20 constituted by winding a wire 42 around a core bar 40, a bar receiving member 22 supporting rotatably the bar 20, and a slot 34 supplying the coating liquid to the bar 20. When in a radial section of the wire 42 of the bar 20, the wire diameters in an X-axis and a Y-axis directions crossing at the center point O of the wire 42 are respectively Xi (mm) and Yi (mm), and average values of the wire diameters are respectively Xav (mm) and Yav (mm), an aspect ratio Rxyi of the wire diameters, and the wire diameter ratios Rxi and Ryi in the X-axis, and the Y-axis directions to the average values satisfy respectively the following formulas 1-3: Rxyi=Xi/Yi=0.98-1.02 (formula 1), Rxi=Xi/Xav=0.995-1.005 (formula 2), and Ryi=Yi/Yav=0.995-1.005 (formula 3). <P>COPYRIGHT: (C)2009,JPO&INPIT |
