| 摘要 |
PURPOSE:To enable to apply a coating layer excellent in flatness onto a running web, by metering a coating liquid, while continuously supplying a fixed amount of another liquid having nearly the same composition as that of the coating liquid onto both of the front and rear end parts of a coil bar with respect to its running direction. CONSTITUTION:A coating liquid is excessively applied onto a web 1 continuously running along the arrow by an applicator, and an excess amount of the coating liquid is scraped off by metering it with a coil bar 22 to form a coating film of desired thickness. Hereon, another liquid having nearly the same composition as that of the coating liquid is continuously supplied through two slots 24, 25 of a holder 23 to both of the end parts of the bar 22. Hence, the liquid through the slot 24 is let fall down 26 along a wall at the back of the holder 23, while the liquid through the slot 25 is let fall down together with the metered liquid along a front wall and recovered or recirculated. Consequently, the wetting effect of the bar 22 becomes excellent, and the excellent metering can be performed. |
