| 摘要 |
A system for applying a treatment liquid to a passing web has two applicators spaced apart in a travel direction of the web and extending over a width of the web. Each applicator has a flow surface having a lower edge juxtaposed with the web and extending a width of the web and a reservoir extending the width of the web and having an angled downstream surface having an upper edge forming at an upper edge of the lower flow surface a first overflow. Each reservoir is fed a treatment liquid so that the liquid rises therein and flows up the downstream surface, over the overflow, and down the flow surface to the web. A controller synchronously operates the supplies while the web is moving and at an offset dependent on a travel speed of the web for switching from one of the applicators to the other of the applicators.
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