Analysis of uneven gravure effect

In the printing process, ink sticking is too high or solvent volatilizes too quickly.

During the printing process, the viscosity of the ink is too low, causing the printing of the printing layer to be uneven. Therefore, it is difficult to control the level of uneven print in the production process. It is better to reduce the printing unevenness due to the parallel phenomenon by choosing a better carving process.

Gradation print unevenness can be divided into gradual grade uneven print and shallow print uneven.

Therefore, for the shallow print unevenness, the following solutions can be adopted: properly reduce the solvent's volatilization rate, increase the slow-drying solvent; appropriately increase the temperature of the printing shop, reduce the temperature of the printing shop; select better quality ink and plate cylinder .

The shallow print unevenness is mainly caused by the following reasons:

Gradation level print unevenness is mainly due to no matter how you choose the engraving process in the plate making process. You cannot hide the area where the dots are easy to produce parallel levels. Although the viscosity of the ink can be adjusted in the printing process to create areas that can be changed at the same level, It is impossible to avoid the occurrence of a tiered network.

The plate cylinder is made rough, with burrs, causing the scraper to scrape unevenly.

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