Cause 1: The number of anilox roller lines is too high and the coating is too thin.
Solution: Use an appropriate number of anilox rollers to increase the coating thickness.
Cause 2: The leveling property of the UV varnish is poor.
Solution: Add a small amount of suitable leveling agent, wetting additives.
Cause 3: Too much non-reactive diluent is added.
Solution: A small amount of smoothing aid can be added. The dilution is preferably a reactive diluent that participates in the reaction.
Reason 4: There are more dust on the print surface.
Solution: The production environment and printed surface should be kept clean.
Cause 5: The gloss oil has a long time with debris.
Solution: Filter Varnish.
Cause 6: The drying speed of the varnish is slow.
Solution: Fully dry.
Reason 7: The speed is too fast and the anilox roll has become empty.
Solution: Reduce the speed and let the anilox roller fully ink.
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