Technological innovation of cigarette package printing in China
because of the product characteristics of cigarette package printing: large output, many spot colors and large background colors, gravure printing machines are mostly used as printing equipment. The rotary intaglio printing machine has the characteristics of high efficiency and thick ink color, and has a significant advantage in the printing of cigarette packets that can easily print tens of millions of pieces. Therefore, the early cigarette package printing was mainly printed by gravure printing machine
gravure printing machines are mostly imported, and there are also a few brands: Bobst, Komori nbsp; Chambon, ceruttl, comprint, France ATN, Japan Fuji, Italy Polytech and rotomec. The domestic installed capacity of Komori, ceruttl and gold printing is about 240 color groups, and the domestic installed capacity of Bobst, ceruttl and gold printing is close to or more than 200 color groups, and the other brands are about in color groups respectively
according to incomplete statistics, there are more than 200 printing enterprises focusing on cigarette packs in China, and most of them have gravure printing production lines. There are more than 50 non-ferrous gravure printing lines in Yunnan alone. Due to the relatively large profits of cigarette package printing in the early years, a large number of printing enterprises have set foot in the cigarette package printing industry, especially those in Guangdong and Shenzhen. As a result, the cigarette package printing competition has become increasingly fierce. As a result, the cigarette package design and printing process have become more and more complex, and the materials used have become more and more exquisite, such as gravure printing, offset printing, flexo printing, silk screen printing, UV printing, UV glazing, holographic hot stamping Laser aluminum foil paper and other technologies have been launched one after another. Cigarette packs printed by twoorthree printing technologies can be seen everywhere. Cigarette packs combined with a variety of printing technologies are not new. Even the engraving gravure used for printing RMB is also used for cigarette pack printing. For a time, exquisite cigarette pack products, such as the water of the Yangtze River, are constantly emerging, with complex processes and advanced technologies, which can be called the world leader
under such a situation, the original high-speed rotary gravure printing machine can no longer meet the requirements of multi-mode combined printing of cigarette packets, and its flexibility is greatly limited. At this time, the domestic monochrome gravure printing machine with good quality and low price took advantage of the trend and occupied the best time, place and people in the situation of printing cigarette packets with a variety of technologies. Its main manufacturers, Beijing zhenhenri Printing Machinery Co., Ltd., Shanghai Ziming Machinery Co., Ltd. and Shanghai Hairun Printing Machinery Co., Ltd., have seen a booming sales of single concave machines in the past two years. The powerful cigarette package printing enterprises have spared no expense to buy the combined printing production line, such as the gallus combined printing production line, which has appeared in the north and south of China
as mentioned above, there are 50 gravure printing production lines in Yunnan, while Yunnan has only 18billion cigarette packets per year. According to the current production capacity of gravure printing machines, about 30 production lines are enough to complete. Even so, the trend of Yunnan to buy new production lines has not stopped. How far can the price and profit of cigarette package printing avalanche on the day when Yunnan is known to the whole country and this development continues
current printing technology characteristics of cigarette packs in China:
1. Single gravure printing is developing towards offset printing and combination printing
offset printing has always occupied an absolute dominant position in the field of publishing and commercial printing. In particular, the high-end printing of picture books can only be completed by offset printing. This is because the offset press has developed to this day, and the technology has been very mature. It has incomparable advantages in image detail reproduction compared with other printing methods. Compared with gravure printing, offset plate making has the remarkable characteristics of short cycle and low cost. At present, when cigarette factories frequently change cigarette package design, constantly launch new products, and the sales volume of new products is small, offset printing machines show high flexibility, which is the main reason why offset printing accounts for an increasing proportion in cigarette package printing in recent years
especially in the field of printing in China, offset printing has been very popular, accounting for the largest proportion in various printing methods, and is the most important printing method in the field of publishing and packaging printing in China. Therefore, in China, the installed capacity of offset printing machines is the largest, with the best hardware environment and software conditions. The sales volume of Heidelberg, Manroland, gaobao, Komori, Mitsubishi and Akiyama, the six major international suppliers of offset printing machines, has been rising in China in recent years. Most of the introduced sheet fed offset printing machines are used for packaging and printing. Although many large and medium-sized cigarette package printing enterprises have purchased web gravure printing machines or flexographic printing machines, they all take offset printing as one of their main businesses, or for printing small and medium-sized cigarette package products, or for printing packaging products in other industries (such as cigarette boxes, cosmetic boxes, medicine boxes, etc.)
however, in recent years, with the intensification of competition in the tobacco industry and the continuous improvement of cigarette case design, a single offset printing can no longer meet the requirements of exquisite cigarette packs. Therefore, the technology of combined printing of cigarette packs by offset printing, gravure printing, silk, flexography and so on quietly rose and became popular overnight in the north and south of the river. The result of combined printing has pushed the grade of cigarette packs to an unprecedented level. At the same time, it also gives full play to the characteristics of several printing methods, learning from each other's strong points to offset each other's weak points. Offset printing is used to print additive images and gradient patterns. Taking advantage of the thick ink layer and stable ink color of gravure printing, large-area field and spot color, gold silver, pearlescent color and various imitation metal etching inks are printed. If special finishing effect is required, silk printing process can be added, such as frosting, ice flower, crystal, wrinkle, etc. Therefore, the combination of offset printing, gravure printing and silk screen printing has brought an unprecedented strong artistic visual effect to the cigarette case. In addition, the post-processing technology, such as gold sweeping, UV local polishing, bronzing, bulging, etc., makes the cigarette bag even more beautiful and amazing
2. The materials used are becoming more and more high-grade. As the four or five types of cigarette factories are unprofitable, how to promote the first and second types of cigarettes to the market, create brands and open sales has been the dream of all cigarette factories in recent years. As the soft pack "Zhonghua" is the number one representative of high-grade cigarettes in China, the elegant packaging design of its typical Chinese cigarettes has become the object of imitation by cigarette factories. As a result, most cigarette factories adopt soft packaging design when launching their own top-grade cigarettes. Almost all the materials used are laser holographic aluminum foil paper, and the price of this paper is undoubtedly the highest among all the papers. For example, the blue soft bag furongwang, treasure Nanjing, treasure Baisha, treasure jiaozi, sunshine jiaozi, blue soft bag Baxi, century boutique furongwang, hard box furongwang, Honghe V8, Guiyan, special alcohol gold Yunyan, etc. all use plain laser aluminum foil. The outer packaging is so exquisite, and the interior is not backward. Many tipping papers used in these cigarettes are bronzed. All these make the cost of packaging and printing increase unprecedentedly. Of course, the price of these cigarettes is not cheap, they are all in yuan/box, or even higher
3. There are more and more patterns in the post-processing process of cigarette boxes
in addition to the increasingly complex printing process and more exquisite materials, the post-processing process is also unwilling to be lonely, with more and more patterns and more complex operations
(1) gold sweeping
a process between bronzing and gold printing. It is characterized by high speed and low cost. It can achieve ideal results regardless of the size of the text and area. Gold powder also has a variety of colors, such as gold, silver, red gold, red copper, green, brown, lemon, malachite blue, etc., and also has different particle sizes, showing different visual effects. In foreign countries, a kind of gold powder with diamond like effect is still popular. This gold powder has four particle sizes and 10 colors, which can make the whole picture and text show a group of diamond patterns under the light, and reflect the unique effect of colorful light. Representative cigarette bag: Red "Huangshan"
(2) holographic hot stamping
the laser hologram is made according to the principle of laser interference and the method of spatial frequency coding. Laser holograms have been used in the field of anti-counterfeiting since the 1980s because of their color, obvious layers, vivid images, changeable optical transformation effects and high information and technology content. The latest OVD technology has been significantly different from the widely used hologram holograms, and some holograms have the function of machine recognition. The mechanism of holographic hot stamping is to heat and melt the hot melt adhesive layer and separation layer on the holographic hot stamping material through the heated hot stamping die on the hot stamping equipment. Under a certain pressure, the holographic grating stripe of the information layer of the hot stamping material is separated from the pet substrate, so that the aluminum foil information layer and the hot stamping surface are bonded and integrated to achieve a perfect combination
there are three types of holographic hot stamping: A. random hot stamping of ordinary holograms; B. Special edition hologram random ironing; C. Special edition hologram positioning iron. Among them, the third special hologram positioning iron has appeared frequently on high-end cigarette packs in the past two years. It means that the hologram of a specific part of the holographic anti-counterfeiting hot stamping anodized aluminum is accurately hot stamped to a specific position of the cigarette bag on the hot stamping equipment through photoelectric recognition. The hologram positioning ironing technology is very difficult. The printing plant is required not only to be equipped with high-performance and high-precision special positioning ironing equipment, but also to have high-quality special positioning ironing electrochemical aluminum. The production process should also be strictly controlled to produce qualified cigarette pack products. Due to the high anti-counterfeiting performance of positioning hot stamping marks, they are used in banknotes, important certificates and other occasions. Representative cigarette packs: top grade "Yunyan" and "furongwang"
(3) soft paper embossing and positioning ironing
due to the popular soft packaging form of high-end cigarettes, the original gorgeous post-processing technology on white cardboard has also been transferred to soft paper. Yunnan Qiaotong packaging and Printing Co., Ltd. was the first to try in this field and achieved great success. This process completes bronzing and embossing in one process. The product has the characteristics of full bronzing, fine graphics, beautiful appearance and no embossing skew. However, this process is technically difficult, and the requirements for the accuracy of hot stamping plate, holographic film and hot stamping machine are particularly high, and all operation indicators must be very strict. Because of this, it is difficult to be imitated and has a high degree of anti-counterfeiting, representing "Fu" and "Little Panda" in Huize
(4) hot stamping before printing process
in order to highlight the specific patterns and logos on cigarette packs, in recent years, some printing plants have introduced a new process of hot stamping electrochemical aluminum first, and then printing patterns on electrochemical aluminum. The results make the theme of cigarette packs more vivid and lively. The key to this process is that the anodized hot stamping must be firm. During printing, anodized must not be pulled down by the printing ink. This will not only affect the quality of cigarette packets, but also the reverse drawn electrochemical aluminum will quickly accumulate on the blanket, which may cause the loss of image points, or even the failure of local image printing. With the operation of the machine, the electrochemical aluminum powder will be transferred to the ink roller system to accelerate the wear of the ink roller. Therefore, according to the characteristics of printing paper, this process should select appropriate electrochemical aluminum to ensure that the electrochemical aluminum can be firmly attached to the paper surface. Representative cigarette packs: soft pack "national guest", soft pack blue "eight happiness", blue "stone forest"
(5) micro embossing process
this process uses a micro embossing plate to emboss various required fine lines on the image and text part of aluminum foil paper. The products obtained have the effects of hot stamping and embossing, and have strong metal texture. Representative cigarette packs: soft and hard pack "state guest", soft pack "state pack", soft pack blue "eight happiness", soft pack "Lotus king"
the modified plastics (including engineering plastics) account for 50000 tons of wenlai