| 摘要 |
<p>Pond pressure controlling means, e.g. a tiltably mounted metering lip baffle associated with the floor area which in part defines with an upstanding doctor blade and rib running on the backing surface means a coating application pond chamber, provides an adjustable output orifice for the chamber spaced from the blade at an upstream location relative to the direction of travel of the web. Means such as a pressure fluid responsive means, e.g. an inflatable bladder, is adapted for selectively adjusting the pond pressure controlling means for obtaining a desired output orifice dimension. In another form the controlling means may comprise simply an inflatable tubular bladder provided with any adjustable orifice-defining rib.</p> |
