6-1. For UV inks, yellow and red are generally more transparent to UV rays. Blue and black, especially black UV, are difficult to penetrate. Therefore, if the printing density is increased too much in order to improve the printing effect, poor curing may occur, the ink may be easily wiped off, the adhesion may be poor, and even the back surface may be dirty. In UV
Special attention should be paid to the printing density of black ink in printing.
6-2. Among various base materials, there are also a small amount of base materials that have poor adhesion to UV ink, scratch resistance, and flexural flexibility. In particular, synthetic paper and plastic substrates are quite diverse and there are also surface treated and untreated substrates. Ink is also quite different for various substrates, such as adhesion performance, so it is very important to choose a suitable substrate for UV ink, or to select an ink suitable for the substrate. UV inks are used for paper and plastic, and there are several types of UV inks for plastics. Be sure to test adhesion and other properties before use.
6-3. Even if the substrate is paper, due to the difference in the type of paper, the type of ink, and the difference in curing conditions, accidents with low adhesion may occur, and attention should be paid to performing pre-tests.
6-4. The UV inks of Societe Generale are, in principle, ready for use without adjustment, but depending on the quality of the paper, the room temperature and the printing conditions, a 2-5% UV special varnish or debonding agent can be added.
6-5. If auxiliary or detergent is used, use an auxiliary or detergent specific to UV ink.
6-6. Please do not mix with oily ink. If it must be mixed with other inks, you must confirm the fluidity, adhesion, printability and gelity of the ink after mixing.
6-7. After UV inks are mixed with UV inks, fluidity deteriorates, the gel speed increases, and the brightness becomes weak. Therefore, please do not save the mixed ink for a long time.
6-8. If the ink is stored at a high temperature, gelling, hardening, etc. may occur. Please store the UV ink in a dark place below 25oC.
6-9. In particular, gold and silver inks are more prone to coagulation and brighter than normal UV inks, so do not store them for a long time.
6-0, UV inks and general oily ink, the water is relatively narrow, especially after the ink emulsification, the emulsified ink will accumulate in the ink roller, and remain on the layout and blanket, causing dirt and other printing problems. At the beginning of printing, compared with oil ink, the supply of ink in the ink fountain is not very good compared to the oil ink, so there is a tendency to open the ink fountain too much. The supply of the ink in the way is gradually increased, and the ink on the printing press is excessive, resulting in ink emulsification. . So pay special attention to the supply of ink and water.
Special attention should be paid to the printing density of black ink in printing.
6-2. Among various base materials, there are also a small amount of base materials that have poor adhesion to UV ink, scratch resistance, and flexural flexibility. In particular, synthetic paper and plastic substrates are quite diverse and there are also surface treated and untreated substrates. Ink is also quite different for various substrates, such as adhesion performance, so it is very important to choose a suitable substrate for UV ink, or to select an ink suitable for the substrate. UV inks are used for paper and plastic, and there are several types of UV inks for plastics. Be sure to test adhesion and other properties before use.
6-3. Even if the substrate is paper, due to the difference in the type of paper, the type of ink, and the difference in curing conditions, accidents with low adhesion may occur, and attention should be paid to performing pre-tests.
6-4. The UV inks of Societe Generale are, in principle, ready for use without adjustment, but depending on the quality of the paper, the room temperature and the printing conditions, a 2-5% UV special varnish or debonding agent can be added.
6-5. If auxiliary or detergent is used, use an auxiliary or detergent specific to UV ink.
6-6. Please do not mix with oily ink. If it must be mixed with other inks, you must confirm the fluidity, adhesion, printability and gelity of the ink after mixing.
6-7. After UV inks are mixed with UV inks, fluidity deteriorates, the gel speed increases, and the brightness becomes weak. Therefore, please do not save the mixed ink for a long time.
6-8. If the ink is stored at a high temperature, gelling, hardening, etc. may occur. Please store the UV ink in a dark place below 25oC.
6-9. In particular, gold and silver inks are more prone to coagulation and brighter than normal UV inks, so do not store them for a long time.
6-0, UV inks and general oily ink, the water is relatively narrow, especially after the ink emulsification, the emulsified ink will accumulate in the ink roller, and remain on the layout and blanket, causing dirt and other printing problems. At the beginning of printing, compared with oil ink, the supply of ink in the ink fountain is not very good compared to the oil ink, so there is a tendency to open the ink fountain too much. The supply of the ink in the way is gradually increased, and the ink on the printing press is excessive, resulting in ink emulsification. . So pay special attention to the supply of ink and water.
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