Aluminum tube printing ink is not tight, how to deal with?
First confirm the ink is not improper, is dedicated to the metallic ink of the aluminum material, furthermore, if the ink is dedicated to aluminum, so aluminum surface is not oil, solvent or alcohol wipe again.
Treatment of substrates by spark treatment or other methods
Ink after printing or self baking dry time is not enough, if it is UV ink printing, light illumination machine is not enough
