When self-adhesive label is printed, what is indispensable? Ink is one of the indispensable and important materials for self-adhesive label printing. Its quality and use method are related to the printing effect of self-adhesive label. Therefore, it is very important to master the use skills of ink on the basis of selecting high-quality ink.
1. The viscosity of the ink must be determined according to the printing speed. It is necessary to know that the ink has the characteristics of "thixotropy". When using, the viscosity should be determined according to the area of the printing plate and the printing speed.
2. When using, it is better to use the method of gradually increasing the ink viscosity and pH to help the ink dry during the background overprint, and also to prevent the post printed ink from making the dried background ink muddy.
3. When using old ink, it is best to use a filter screen with more than 80 mesh to filter out the impurities before use, so as to prevent the occurrence of printing quality failure of self-adhesive trademark;
4. When printing self-adhesive labels, the ink bucket should maintain a certain amount of ink to achieve normal ink transfer printing. In this way, there will inevitably be a certain amount of residual ink, and the residual ink should not be used. This is likely to cause waste and increase its production cost.
5. As water-based inks are liquid in nature, compared with offset and embossing inks, they are most prone to delamination or precipitation. Therefore, when using or sampling, the inks should be fully stirred before being put into use to ensure the stability of printing color quality.
Of course, there are many things to pay attention to in the use of ink. Improper use of ink may lead to poor printing effect of self-adhesive labels. Therefore, special attention should be paid.