| 摘要 |
An apparatus for coating a paper or paperboard web with at least two coat layers. The present invention achieves two-layer coating and is capable of providing a smooth coat with high opacifying power. A first coat layer is initially applied to the web. The surface of this first coat layer is smoothed by a smoothing element. After smoothing, this first coat layer is partially or entirely dried, and a second coat layer is applied onto the first coat layer using a transfer coater.
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