| 摘要 |
In the construction of a laminated coating head in which drops of coating material are ejected from very small orifices in an orifice plate toward a web or other article to be coated, the orifice plate, the filter plate, and an inlet plate are first assembled in what is termed a "clean package" and flushed through a port in the inlet plate with a cleaning fluid to insure that no particles large enough to clog the orifices have been trapped in the coating head during construction thereof. Compressed air may also be blown into the assembly during flushing and following flushing, the port on the inlet plate is sealed and the remaining components attached to the "clean package.
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