CURTAIN COATER AND METHOD FOR CURTAIN COATING

摘要

The present invention relates to a curtain coater and a curtain-coating meth od for coating a moving web (2) of paper or board. The curtain coater comprises an applicator nozzle (1) located above the web (2) to be coated so as to app ly the coating mix therefrom to the surface of the web (2) in the form of a continuous curtain extending uniformly over the cross-machine width of the w eb (2). The boundary air layer traveling on the surface of the web (2) is remov ed by a doctoring means (3) which is located upstream in the travel direction o f the web (2) in front of the impingement point of the coating mix curtain on the surface of the web (2) and is further located on the same side of the we b (2) as the applicator nozzle (1).