[Chinese Packaging Network News] Packaging printing ink after the crust taken measures We all know that when the ink in the ink fountain in the printing process to form a layer of film due to dry surface, either place a stirring device, or simply drain the ink Otherwise, the film will adhere to the roller. As a result, the layout will be uneven, resulting in contamination of the printed product.
Glass Network News Pictures
The reason for this, the ink community tends to:
(1) The ink is drying too fast;
(2) poor ink flowability;
(3) The ink has been dried. However, everyone does not know that this phenomenon is caused by the evaporation of the ink system, or evaporation, or oxidation drying gradient caused by large, while the printing industry believes that: the ink ink tank or ink fountain structure is not good, resulting in a non-flowing retention section from the dryer The leaked air dries the surface of the ink or the hot air blows the ink in the ink fountain.
Although there are different opinions, but in the presence of this phenomenon, the commonly used processing methods for printing operators are:
(1) Do not use fast-drying inks;
(2) adding a slow-drying solvent;
(3) Replacement of deteriorated inks (i.e., poor fluidity to excellent fluidity);
(4) Keep stirring in the ink fountain;
(5) A closed top cover is provided on the ink fountain;
(6) Adjust the hot air blow angle. Persons who have general experience in printing experience, when the dry speed is too fast, or the ink concentration is too light, or the flow is poor, or the ink is thixotropic, or the ink is electrostatically charged, the method of adjusting the speed of the printing machine will be adopted to prevent the ink. The dried knots are formed on the printing plate earlier, and the crust formed by the film forming the packaging printing ink is overcome, eliminating the speckle failure of the graphic.
Zhongshan Zhongyi Ink Coating Co., Ltd. is located in Haikou Town, Zhongshan City, Guangdong Province, China. Top ten brand manufacturers and suppliers of environmental protection silk printing and printing ink industry, and they provide investment and agency services for the whole country, joining and cooperation, specializing in the production and supply of uv printing inks, pvc screen printing inks, Pet waterborne offset glass inks, printing materials, colorful four-color printing inks, ink additives, printing equipment, plate making materials.