Compared with cigarette labels, wine packaging has some obvious characteristics. There are many varieties of wines and many grades. Overall, the difficulty of printing wine packaging is not as complicated as that of cigarette labels. The printing process is mainly offset printing and several typical post-processing, and gravure printing and screen printing are complementary methods.
Relevant persons in the industry believe that wine packaging printing is still dominated by offset printing, and the printing colors are mainly four-color and spot colors. Labels for wine packaging are generally printed on coated paper, such as 80g / m2 and 128g / m2 high-grade coated paper. The printing of wine packaging is mainly based on white cardboard and white cardboard with a basis weight of 350g / m2.
Traditionally, wine packaging printing is mainly offset printing, using thick paper type multi-color offset printing machine, such as Heidelberg multi-color offset printing machine, printing beautifully and fast, capable of printing thick paper of 0.6 ~ 1.0mm, the speed can reach 1.5 10,000 sheets / hour, printed wine box is very suitable.
Offset printing is a relatively mature printing process, especially in screen printing, there is a set of standardized and data-based methods. However, in addition to screen printing, wine packaging printing also involves a large number of spot color reproductions, such as large areas of red solids, gold (silver) colors, and pearlescent effects. Because spot colors, especially solid spot colors, have higher requirements for saturation and brightness, and offset printing is limited by the thickness of the ink layer when printing solid areas, it seems to be unable to work. At this time, the two printing methods of “darkness first and lightness second†can be adopted. When designing, try to avoid hollow text on the solid version, so as not to increase the difficulty of overprinting.
Now, as wine packaging materials are generally made of composite paper materials and printed with ordinary ink, there are problems such as adhesion, friction resistance and poor drying. Therefore, manufacturers generally carry out Uv technical transformation of offset presses, which fundamentally solves the problems of composite paper printed products. Because UV ink greatly improves the physical properties of the ink layer surface, some packaging and printing companies have begun to use offset printing UV ink to print fine sand, gold, silver and other ordinary offset printing that is difficult to achieve.
Gravure printing is another optional method for wine packaging printing due to its high saturation, high contrast, high brightness, strong consistency, and high printing plate durability. If the art design draft is relatively large and requires thick ink colors, the ordinary offset printing is slightly inadequate, and the gravure printing method can meet the demand. Another advantage of gravure printing is that it can print other printing materials besides paper, such as printing on laser anti-counterfeiting film, and then compounding with cardboard to achieve another visual effect.
Due to the fact that gravure wine packaging mostly consists of solid ground, color blocks and lines, the requirements for color management in plate making are relatively strict, and the control of the printing process is relatively easy compared to offset printing and flexographic printing.
The artistic effects of screen printing such as frosting, refraction, ice flower, wrinkle, etc. make the packaging of wine box icing on the cake, which greatly stimulates consumers' desire to buy. In addition, because the brightness of the product is increased after the partial varnishing by the silk screen uV, the three-dimensional sense is strong, and it is often used in the decoration of wine packaging color boxes. Flexographic printing is currently rarely used in the printing of wine packaging color boxes, and some beer labels will use this printing method. I believe its advantages of environmental protection and hygiene will gradually be recognized and favored by wineries.
Looking forward to the trend of wine packaging printing, people in the industry believe that a combination of multiple processes has become an ideal way for wine packaging printing. Combined printing can bring out the characteristics of several printing methods. For example, when printing products with rich levels, you can choose offset printing; when printing spot colors, gold (silver) ink, you can use single-sheet gravure printing. When special decoration effect is needed, screen printing can be used.
The combination of offset printing, gravure printing, screen printing and other three processes has brought a strong visual impact to the wine packaging color box. With the post-processing process, the wine packaging color box has become an admirable art.
In the process of pursuing efficiency and economic benefits, new technology R & D has become the driving force for sustainable development of enterprises. There is reason to believe that domestic packaging and printing companies will continue to innovate, and innovative technologies and processes will appear in the field of wine packaging printing.
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