[China Glass Network] Under the constant pursuit of environmental protection, high performance, more efficient and more energy-saving environment, UV ink has great development prospects in the printing industry. UV ink will be further promoted and applied in the printing industry. More and more printing companies, printing companies began to choose the appropriate UV ink, when buying and purchasing UV ink, pay attention to the following three elements.
First, buy UV inks to see "color"
When purchasing UV inks, you should "check and see". UV inks are sensitive to ultraviolet light. If the UV ink after application continues to be exposed to ultraviolet light (such as sunlight and fluorescent lamps), the UV ink will continue to react and turn yellow, which is a defect of the UV ink itself. For conventional UV inks, it is currently not fundamentally improved, but the degree of yellowing of UV inks from different suppliers is different unless a specific non-yellowing or extra-white UV ink is used.
The main reason for the discoloration of the ink after UV ink glazing is the problem of the ink. There are some pigments in the ink, such as radiance blue, which is a blue acid lake pigment. It is an organic dye triphenylmethane dyed on an extender pigment such as aluminum hydroxide to form an insoluble pigment pigment in water. The price is low, the hue It is vivid, but its light resistance, solvent resistance and alkali resistance are poor. When a solvent such as an alcohol or an alkali is encountered, the red phase is easily dissolved, weakened or disappeared.
These pigments, such as those used in book inks (the surface after printing is no longer glazed), are feasible, but if used in color box inks, they are very dangerous because most of the color boxes are post-processed. The detection method is to drop a drop of base oil and ink on the surface of the ink, and it is very obvious whether the ink is discolored after 1 hour.
Second, buy UV ink to smell "flavor"
When buying inks in the purchase, we have to "taste" to evaluate the odor of UV inks. There are two indicators. The first is the odor in the construction process. The main source is the residual solvent in the UV ink. Under normal circumstances, the residual solvent amount is 2 Below %, under special circumstances, such as cigarette pack UV ink requirements less than 0.5%, but in today's soaring oil prices, many suppliers to add a lot of solvents, such as alcohol and toluene, to reduce the cost of UV ink, higher Up to 25% is disadvantageous for the long-term development of UV inks and environmental protection.
Another indicator for assessing the odor of UV inks is the residual odor of UV inks after application. It can't disappear after a long period of time. The main source is the improper selection of UV inks. Some of the more expensive but cheap chemicals are used. It is difficult to fundamentally improve, mainly because of the cost and the choice of suitable materials.
Third, the purchase of UV ink is more than "price"
The more important point is the price of purchasing UV ink. The price of purchasing UV ink should be evaluated from the brand and cost performance of the ink. Nowadays, many ink multi-level suppliers are not good or bad. If you don't compare, you may buy a product with a high price, or the ink product is not authentic. We also need to consider the cost of transportation while purchasing UV inks, so it is very important to choose a reliable and reliable ink supplier.
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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