Gold and silver ink printing effect improvement tips

Printing and printing of silver is a difficult part of the process of offset printing and embossing. The reason is that the pigment particles of gold and silver are coarser than those of other ink pigments. The printed material on the paper is first absorbed and a oxidized conjunctiva reaction occurs during the drying process. The pigment particles in the medium are easily precipitated from the binder and the adhesion is not secure. After the ink of other colors printed on the ink is superimposed on the gold and silver ink, due to its own tackiness, it is easy to stick the ink underneath the ink. Or exposed bottom phenomenon, causing waste and defective products.

Our factory is a packaging and printing company. Most of the packaging boxes produced are large areas of printed gold and silver, and other inks are superimposed on this color. According to the actual situation, when the technical personnel explores the silver ink, a silver-gray mixed ink prepared by black ink and a diluting agent is added to the ink, so that the hue is not changed, and the above problem is also overcome.

The use of slightly yellowish ink in the printed gold ink is also effective. Sometimes the black ink is superimposed on the black level of the metallic ink. You can add dark blue ink to the black ink to mix evenly. The problem is solved.