| 摘要 |
The invention relates to a coating device for applying coating color onto a fiber web, which device comprises a nozzle unit with at least one nozzle part (10) comprising a feeding chamber (11) and at least one equalizing chamber (13; 13'), a feed hole (12) between the feeding chamber (11) and the first equalizing chamber (13) and a nozzle slot (14'), from which the coating color discharged through outlet opening (15) of the nozzle slot (14'). At outlet area of the feed hole (12) to the equalizing chamber (13) an impact surface (20) is arranged, which functions as means for distributing uniformly the inhomogeneous coating color flow entering the equalizing chamber (13) from the feed hole (12). The invention also relates to a method for coating of a fiber web, in which method the coating color is applied by a coating device comprising a nozzle unit with at least one nozzle part (10), in which the coating color is fed to a feeding chamber (11) and therefrom to at least one equalizing chamber (13; 13') through a feed hole (12) between the feeding chamber (11) and the first equalizing chamber (13) and then to a nozzle slot (14'), from which the coating color is discharged through outlet opening (15) of the nozzle slot (14'). In the method flow of the coating color at outlet area of the feed hole (12) to the equalizing chamber (13) is directed to an impact surface (20), which distributes uniformly the coating color flow entering the equalizing chamber (13) from the feed hole (12). |
