FAQ ROLLER COATING MACHINES

Here you can find a list of the most common problems you may face during the finishing process along with their possible solutions.

	The workpiece may not be evenly coated (see picture) The working pressure may not be correct: the setting should be 0,6 mm lower than the actual workpiece thickness

	The workpiece have crosswise lines at a distance of approximately 750 mm from the other. The application roller may be scratched or deformed crosswise and should be replaced.

	The workpiece have crosswise lines at a variable distance The speed of the application roller could be incorrect and adjusted or the application roller may be scratched or deformed crosswise and should be replaced

	The workpiece have wavy lengthwise lines The scraper could be dirty and or scratched and should be cleaned or replaced. The application roller itself could be scratched by the scraper and should be replaced

	The workpiece have straight lengthwise lines. The application roller could be scratched by the scraper and should be replaced. Make sure no parts come into contact with the roller thereby scratching it.

	Build-up of coating on the tailing edge of the workpiece The speed of the application roller is too low and should be adjusted.

	Build-up of coating on the leading edge of the workpiece The speed of the application roller is high low and should be adjusted.

	The stained workpiece have too much stain on the front and too little on the back The scraper on the application roller is not in position and the scraper pressure on the roller should be adjusted accordingly.

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