10 Ways to improve the gloss of Handmade Hinged Lid Cigarette Box

10 Ways to improve the gloss of Handmade Hinged Lid Cigarette Box

Under the condition of the same paper and ink, due to the problems in the operation process, the gloss of the finished product is often larger after printing. Without considering the premise of polishing treatment after printing, the following methods can be used to improve the gloss of printed products:

1. Improve the acid wetting solution. The acidic wetting liquid used in China for several decades is mainly chromic acid and phosphoric acid. Although it has been diluted, the PH value is still between 3.5 and 5.6. The stronger the acid, the greater the separation and erosion of ink bonding materials and pigments, the greater the effect of imprinting film surface rough, reduce the gloss. For the wetting fluid research and development in recent years has made a breakthrough, such as Shanghai's "Lide wetting powder", can be said to be better effect, now our offset printing fluid has entered a new stage, but some printing plants are still in use of the old formula.

2. Reduce the emulsion degree of ink. The excessive emulsification of ink in offset printing is mostly caused by the large amount of water and ink in the operation. The imprinting looks like the ink layer is very thick, but the ink molecules become the state of oil in water, and the gloss is very poor after drying, but also a series of other failures. Water is the most taboo in offset printing, to change this situation, in addition to the operator should often carry out quality and technical education, it is recommended to use "Lide wetting powder", because the agent can be better wettability, even if the layout moisture is smaller, it is not easy to dirty. It is easy to operate and makes the finished product shiny.

3. Add the auxiliary agent appropriately in the ink. Add the appropriate auxiliary agent in the ink, can adjust the printing ink suitability, in order to print smoothly. Most auxiliary agents will have adverse effects on the luster of finished products. For example: anti-stick agent, the main raw material is six grain powder, adding ink, imprinted film surface due to the precipitation of corn powder and become rough, the finished product luster is poor. If you add No. 6 thin ink mixing oil, it not only increases the fluidity, but also increases the permeability of the imprint on the paper, but also reduces the dryness, which is not good for the gloss of the imprint. Therefore, the amount of general additives to add ink, not more than 5%, if considering the luster effect, should be less or not put. But fluorocarbon surfactants are different, it can prevent the ink layer from appearing orange peel, wrinkling and other surface defects, and can improve the gloss of the printed surface.

4. Use dry oil correctly. For advanced bright fast drying ink, under the condition of normal temperature and humidity, its own drying capacity. In case of the following conditions should be added to the drying oil: one is in winter temperature, humidity is low in the case; Second, the ink must be added in the anti-stick agent, to remove the adhesive, thin ink oil, etc., should be added to the drying oil. In the process operation, the correct use of dry oil, for the formation of the finished product sheen is very favorable. This is because the paper takes a certain amount of time to absorb the binder. In this process, the binder should condense as soon as possible until the conjunctiva is dry, which is the key to the good luster of the finished product.

5. Watch the powder. Powder spraying, like ink, will also produce condensation, especially in bags or barrels with poor sealing. After the powder is damp, it will condenses into larger particles and is sprayed onto the wet ink imprint, which makes the ink layer surface conjunctival rough and reduces the original luster. Therefore, it is necessary to pay attention to moisture resistance. In addition, there is a heating device on the mechanism of the powder spraying device. When using powder spraying, it should be checked to see whether the heating device fails.

6. Adjust the machine properly. Whether the thickness of the imprinted ink layer is up to the standard also has an impact on the gloss. For example, the pressure regulation is poor, the dot expansion rate is high, the ink layer thickness is not up to the standard, the finished product luster is slightly poor. Therefore, to adjust the pressure, so that the expansion rate of the dot is controlled at about 15%, the printed product ink layer is thick, layer and pull open, luster also has.

7. Gavan Water (No. 0 oil). This kind of oil viscosity is very large, thick itself, can adjust the ink concentration, make thin ink thickening, increase the gloss of printing.

8. Add the glossy paste. The glossy pulp is processed from raw materials with high gloss, which can increase the gloss of the ink, but the amount should not be too large, otherwise it will reduce the drying speed of the ink, sticky and dirty, drawing phenomenon, affecting the gloss.

9. Add diluent. When some ink color is too deep to meet the requirements of spot color printing, it needs to be lighter, which can not only make the ink lighter, but also improve the luster of the printing product.

10. Add 19# resin oil. When the ink fluidity and transfer performance is not good, can be directly into the 19# resin oil, then not only can improve the ink gloss, and does not affect the multi-color overprint printing.