Gravure Printing Failures and Troubleshooting

In gravure printing, besides being prone to fire, there are various kinds of failures, of which the more common failures and exclusion methods are as follows:
1 ink overflow: the phenomenon of ink full version of the part to produce spots, patterns, mainly due to the ink viscosity is too low, the ink is too large, the printing speed is low, the ink drying is too slow or static. The exclusion method is to add the original ink and the adjusting agent to increase the viscosity of the ink and reduce the flowability, and also to increase the printing speed or change the angle of the squeegee.
2 The ink is dried in the plate and embedded: the ink is dried too fast causing the ink to dry in the plate. Caused by the buried version of more reasons, such as large ink pigment particles, foreign matter mixed in, ink fixative poor re-inking, ink viscosity is too high, the printing plate ink hole is too shallow and so on. The elimination method is to reduce the drying speed of the ink, increase the amount of solvent of the ink, improve the re-solubility of the ink, remove the foreign matter, and reduce the viscosity of the ink. At the same time, the hot air of the drying device should be prevented from being blown onto the plate, causing the ink in the plate to dry.
3 Blind lint of printed matter: mainly caused by static electricity, the static electricity of the substrate and ink should be removed, the humidity of the substrate should be raised, or polar solvents and adjusting agents should be added to the ink to increase the viscosity of the ink and the printing speed should be appropriately increased.
4 poor print gloss: adding the right amount of original ink can also be appropriate to improve the ink drying speed, replace the high-quality printing materials.
Source of Confidence: Jiangyin Lida Printing & Packaging Machinery Co., Ltd.