| 摘要 |
A doctor blade for application and smoothing of a coating on a running paper web, wherein the entry zone (9) of the blade (1) intended for engagement with the web, and at least a part (4a) of the bevel surface (4) downstream of said zone in the direction of travel (6) of the web (7), as well as a part (5c) of the entry side (2) of the blade (1) upstream of the entry zone (9), are provided with a thin, wear-resistant surface coating (5). The coating 5 has preferably a total thickness of 0.25 mm or less and consists of ceramic material, metal oxides or metal carbides. The coating 5 is preferably applied as a series of superimposed thin layers, each applied by spraying the coating material in a molten state. <IMAGE> |
