| 摘要 |
The invention concerns a device for metering of a coating agent onto a moving base, such as a paper or board web. The device includes first and second soft-faced applicator rolls defining a coating nip, through which nip a web is passed. The first applicator roll is journalled as fixed on a frame of the device, and the second applicator roll is linked to the frame of the device pivotally by the intermediate of a loading arm or the equivalent. At least one of the applicator rolls is in nip contact with a hard transfer roll, which is further in nip contact with a soft-faced metering roll. A pond of coating agent is located in a metering nip between the metering roll and a transfer roll. As the rolls revolve, the coating agent is transferred through the metering nip onto the face of the transfer roll and from there further through a transfer nip formed by the transfer roll and the applicator roll onto the face of the applicator roll. From the applicator roll, the coating agent is transferred onto the web in the coating nip. The metering roll and the transfer roll placed next to the fixed applicator roll and/or the metering roll and the transfer roll placed next to the mobile applicator roll are pivotally linked to the same machine member on the frame of the device.
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