Analysis of the causes of fogging in gravure printing
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The reason for printing the version
The technical level of domestic gravure manufacturers varies greatly. Because the current restrictions on the delivery lead time are getting shorter and shorter, the time for printing companies to make plate-making enterprises is very small. In the last part of plate making, the polishing process is easy to neglect. This negligence often leads to fogging problems in printing; in addition, after a long period of printing and wear by a metal scraper, the non-image of the printing plate produces shallow dots, so that the fog problem arises. It is.
Reason for printing film
At present, there are many manufacturers of BOPP film in China. Due to the differences in the processes, formulas and additives added by various manufacturers, some films are not flexible enough to cause wear on the plates during long-term printing. Produce shallow dots and gradually produce fog problems.
Reasons for the printing environment
The printing environment has a great influence on the quality of gravure printing products, especially in seasons where temperature and humidity vary greatly and in harsh printing environments (such as low temperature and low humidity).
The cause of the ink
Other external reasons are easier to solve, and the fog problem caused by the ink itself is difficult to solve. This is a problem faced by the ink industry.