在同样纸张、油墨的条件下，由于操作工艺中存在问题，往往Betway login后成品光泽相差较大。在不考虑印后上光处理的前提下，怎么来提高山东包装Betway login
Under the same conditions of paper and ink, due to the problems in the operation process, the gloss of the finished product after printing is often quite different. How to improve the gloss of Shandong packaging printing without considering the post press polishing treatment? Let's take a look at it.
1. Improve the acid wetting solution. The acid wetting solution which has been used for decades in China is mainly chromic acid and phosphoric acid. Although diluted, the pH value is still between 3.5 and 5.6. The stronger the acidity, the greater the decomposition and corrosion of ink binder and pigment, resulting in rough surface of imprinted film and reduced gloss.
2.降低油墨乳化度。山东包装Betway login中的油墨乳化过度大都是操作中水大墨多造成的，印迹看上去墨层很厚，但油墨分子成了水包油的状态，干燥后光泽性极差，而且还会产生一系列其它故障。水大墨多是山东包装Betway login中最犯忌的做法，要改变这种状况。 3.正确使用燥油。对于高级的亮光快干油墨，在温、湿度正常的情况下，自身已有足够的干燥能力。如遇以下情况应加放燥油：一是在冬季温、湿度偏低的情况下；二是油墨内须添加防粘剂、去粘剂、薄调墨油等的情况下，都应加放燥油。在山东包装Betway login操作中，正确地使用燥油，对于成品形成光泽非常有利。这是因为纸张吸收连结料需要一定的时间，在此过程中，尽快使连结料凝聚，直至结膜干燥，是成品光泽好的关键。
2. Reduce the emulsion of ink. The excessive emulsification of ink in Shandong packaging printing is mostly caused by too much water and ink in operation. The ink layer appears to be very thick, but the ink molecules become the state of oil in water. The gloss after drying is very poor, and a series of other faults will occur. Water and ink is the most taboo practice in Shandong packaging printing. We should change this situation. 3. Use dry oil correctly. For advanced light fast drying ink, under normal temperature and humidity, it has enough drying capacity. In case of the following circumstances should be added dry oil: first, in the winter temperature and humidity is low; second, the ink must be added in the case of anti adhesion agent, anti adhesion agent, thin inking oil, etc., should be added dry oil. In Shandong packaging printing operation, the correct use of dry oil is very beneficial to the gloss of finished products. This is because it takes a certain time for the paper to absorb the binder. In this process, it is the key to make the binder agglomerate as soon as possible until the conjunctiva is dry.
4. Pay attention to powder spraying. Like ink, dusting can also produce condensation, especially in bags or barrels with poor sealing. When the powder is damped, it will agglomerate into larger particles, which will be sprayed on the wet ink imprint, making the surface of the ink layer rough and reducing the original luster. Therefore, attention should be paid to moisture-proof in powder spraying. In addition, there is a heating device on the mechanism of the powder spraying device, which should be checked when using the powder spraying device to see if the heating device fails.
5. Adjust the machine correctly. Whether the thickness of imprinted ink layer of Shandong packaging printing meets the standard also has an impact on the gloss. For example, poor pressure regulation, dot expansion rate is high, ink layer thickness can not reach the standard, the finished product luster is slightly poor. Therefore, to adjust the pressure, so that the dot expansion rate is controlled at about 15%, the ink layer of the printed product is thick, level and open, luster also has.
6. Garfanlishui (No.0 oil). This kind of oil is very viscous and thick. It can adjust the ink concentration of Shandong packaging printing, thicken the thin ink, and increase the gloss of printed matter.
Add light to the light. Glossy paste is processed from raw materials with high gloss, which can increase the luster of ink, but the dosage should not be too large, otherwise it will reduce the drying speed of ink, sticky dirty, drawing phenomenon, affecting gloss.
8. Add diluent. When some inks are too dark to meet the requirements of spot color printing, it is necessary to lighten them, which can not only make the ink lighter, but also improve the luster of the printed matter.
9. Add 19% resin oil. When the fluidity and transfer performance of the ink are not good, the 19 ා resin oil can be adjusted directly, which can not only improve the ink gloss, but also do not affect the multi-color overprint printing.
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