Takeaway: screen printing as manufacture of packaging materials for cosmetics are very common graphic printing methods, through the combination of printing ink, screen printing screen, screen printing equipment, make the color transferred to substrates through the graphic on the part of the mesh, in the process, the color change of screen printing will be affected by some factors, this paper shares several factors affecting the change of Affect Print Color, Content for Friends Reference:

Screen printing method, the ink is through part of the screen after leaking onto the substrate, the rest of the screen is blocked, the ink cannot pass. Printing ink poured onto the screen, without external force under the action of the ink will not leak through the screen onto the substrate, and when the scraper scrapes ink with a certain pressure and tilt angle, it will be transferred to the following substrate the screen to a achieve image replication.

01 ink Mfixation

Assuming the pigment is used correctly in the ink, the usual reason for the color change is the addition of the solvent. In a well-controlled shop, ink should be available to the press when it is ready, ie the printer should not mix ink. In many companies, color is not matched to the press, but left to the printer to add and mix color at their discretion. In this way, the pigment balance in the ink is disturbed. With normal water-based ink or UV ink, the water in the ink becomes the same way as the solvent in the solvent ink, adding water makes the dry ink film thin and affects the color of the ink, and then reduces the density of the color. The causes of such problems can be traced further.

In the color warehouse, color matching workers do not use weighing devices, only rely on their own judgment to add the right amount of solvent, or at the beginning of mixing is not appropriate, or when printing the color mixing amount, so the mixed ink will produce different colors. If the…