1. Storage Conditions of New Ink The viscosity of the ink decreases as the temperature rises, and the temperature decreases and the viscosity increases. Some inks placed in the environment below 3 ° C or below 0 ° C will solidify into a jelly state, so-called gelation phenomenon, if the ink appears "gelling", usually need to heat up to 5-10 ° C beyond the gel point to restore the original state. Therefore, in cold areas, special attention should be paid to keeping the ink in winter.
When storing ink in winter, it should be stored in a room with no fire source and warmth as much as possible. Avoid stacking outdoors. If gelation occurs, please put it in hot water to restore it to its original state. If there is still a portion of the insoluble matter that cannot be completely restored to the original state, it may become a cause of malfunction such as clogging of the screen and blockage of the layout. In order to be prudent, it can be eliminated by filtering with a metal mesh and then using it.
2. Adjustment of the new ink during storage. Even if it is a new printing ink, it will not be stored for a long time. The various components in the ink formulation may sometimes separate and precipitate. Sometimes the inner wall of the container will rust and cause printing failure. In order to avoid these problems, they must be used in the order and order of the warehouse.
3. Stirring of the ink As mentioned above, the long-term storage of the ink tends to cause stratification or precipitation of the uniformly mixed components in the formulation. Therefore, even if it is a new ink, the ink tank must be shaken upside down or stirred a little.
4. Management of Remaining Ink Since the solvent used in the gravure plastic ink is a low boiling point solvent, volatilization during printing may cause misalignment of the solvent mixture ratio, or temperature drop due to solvent evaporation, so that the surface of the ink or the surface of the roll Extremely cool, so that moisture in the air penetrates into the ink.
In the printing process, the ink of the film and the electrostatically inhaled dust are mixed into the ink, and the like, especially the pattern area is small, and the ink having a small amount is more likely to change. The remaining ink tends to be lower in viscosity, and separation and precipitation occur faster. Therefore, it is necessary to thoroughly stir it when it is used again, or it is filtered with a metal mesh of 1000 mesh or more, and then mixed with a new ink to carry out a digestion process.
If you continue to store, you must seal, mark the type of ink, and attach a mark to the dark.
Zhongshan Zhongyi Ink Coating Co., Ltd. is located in Port Town, Zhongshan City, Guangdong Province. It is one of the top ten brand manufacturers and suppliers of environmentally friendly silk screen printing ink industry in China. It is a national investment agent and joins cooperation. It specializes in producing and supplying uv printing ink and pvc screen printing ink. Pet water-based offset printing glass ink, printing materials, color crystal four-color printing ink, ink additives, printing equipment, plate making materials.
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