B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
B05C 11/02 (2006.01) B05C 11/04 (2006.01) B05C 21/00 (2006.01) B05D 1/40 (2006.01) D21H 23/32 (2006.01) D21H 25/08 (2006.01) D21H 25/10 (2006.01)
Patent
CA 2043989
In the paper coating operation a wet or dry edge from coating composition is formed on the, seen in the direction of movement of the paper web, downstream side of the doctor, the so-called stalagmite formation . This stalagmite formation leads to various problems in the papermaking process and especially occurs at high speeds of the paper web and/or a high solids content of the coating composition, which two operating conditions are exactly required to obtain a maximum paper yield and a high paper quality. According to the invention the stalagmite formation is effectively prevented by supplying a fluid inhibiting the stalagmite formation to an area bounded, on the one hand, by the paper web and, on the other hand, by the above side of the doctor blade.
Borden Ladner Gervais Llp
Knp Leykam Services B.v.
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