Printing technology characteristics of domestic cigarette packets
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1. Single gravure development for offset and combination printing
Offset printing has always dominated the publishing and commercial printing arena. In particular, high-end prints of catalogues can only be done with offset printing. This is because the offset press has evolved to the present day, the technology is very mature, and there are advantages in image reproduction that are unmatched by other printing methods. Compared with gravure printing, offset printing has the remarkable characteristics of short cycle and low cost. In the current situation where the tobacco factory frequently replaces the cigarette package design, continuously introduces new products, and the sales volume of new products is not large, the offset printing machine shows The high flexibility is the main reason why offset printing has become a growing proportion in cigarette pack printing in recent years.
Especially in China's printing field, offset printing has become very popular, accounting for the largest proportion in various printing methods. It is the most important printing method in the field of publishing, packaging and printing in China. Therefore, in China, offset printing machines have the largest installed capacity and the best. Hardware environment and software conditions. The six international suppliers of offset press Heidelberg, Manroland, KBA, Komori, Mitsubishi and Akiyama have seen their sales in China increase in recent years. Most of the imported sheetfed offset presses are used for packaging and printing. Although many large and medium-sized cigarette printing companies have purchased web gravure or flexo printing machines, offset printing is one of the main businesses, or used to print small and medium-sized cigarette packages, or It is used to print packaging products (such as cigarette cases, cosmetic boxes, medicine boxes, etc.) in other industries of the society.
However, in recent years, when the competition in the tobacco industry has intensified and the design of cigarette packs has been continuously improved, a single offset printing has been unable to meet the requirements of exquisite cigarette packets, so the combination of offset printing, gravure printing, silk screen, flexo printing, etc. The technology has quietly risen and it has been popular overnight. The result of the combination printing has pushed the grade of the cigarette pack to an unprecedented level. At the same time, the characteristics of several printing methods have been fully exerted, and the advantages and disadvantages are complemented. Offset printing and gradation patterns are printed by offset printing, which utilizes the advantages of thick ink layer and stable ink color, printing large areas of solid and spot colors, gold and silver, pearlescent colors and various imitation metal etching inks. If special finishing effects are required, screen printing processes such as sanding, ice, crystal, wrinkles, etc. can also be applied. Therefore, the combination of offset printing, gravure printing and silk screen printing has brought unprecedented strong artistic visual effects to cigarette packs. Coupled with the post-processing technology: sweeping gold, UV partial glazing, bronzing, lifting, etc., even make the cigarettes on the brocade, beautiful, amazing.
2. The materials used are getting more and more high-grade
As the four or five types of cigarette factories are unprofitable, how to push one or two types of cigarettes to the market, pull out brands, and open up sales is something that every tobacco factory has been dreaming of in recent years. Since the soft bag “China” is the number one representative of domestic high-grade cigarettes, the typical Chinese cigarette design is the object of imitation of various cigarette factories, which leads to the flexible packaging design of cigarette factories in their own top-grade cigarettes. The materials used are almost always laser holographic aluminum foil, and the price of this paper is undoubtedly the highest among all papers. Like: blue soft bag Furong Wang, treasure Nanjing, treasure white sand, treasures Jiaozi, Sunshine Jiaozi, blue soft bag eight hi, century boutique Furong Wang, hard box packaging Furong Wang, Honghe V8, expensive smoke, special alcohol gold medal Cloud smoke and so on are all plain laser aluminum foil paper. The outer packaging is so particular, and the interior is not backward. Many of the tipping paper used in these cigarettes are bronzing. These have led to an unprecedented increase in packaging printing costs. Of course, the price of these cigarettes is not cheap, they are all in the 20-80 yuan / box, or even higher.
3. More and more patterns in the processing of cigarette cases
In addition to the increasingly complex printing process, more and more materials, the post-processing process is not lonely, more and more patterns, and the operation is more and more complicated.
3.1. Sweeping gold
A process between bronzing and gold printing, characterized by high speed and low cost, which can achieve ideal results regardless of the thickness and size of the image. Gold powder also has a variety of colors, such as gold, silver, red gold, red copper, green, brown, lemon, peacock blue, etc., also have different granularity, showing different visual effects. In foreign countries, there is also a kind of gold powder with imitation diamond effect. This kind of gold powder has four kinds of particle sizes and 10 colors, which can make the whole graphic display a set of diamond patterns under the illumination of light, reflecting the uniqueness of colorful light. effect. On behalf of the cigarette pack: Red 'Huangshan`.
3.2. Holographic hot stamping
The laser hologram is fabricated by the method of spatial frequency coding according to the principle of laser interference. Laser holograms have been used in the field of anti-counterfeiting since the 1980s because of their color, clarity, vividness, vivid optical transformation, and high information and technology content. The latest OVD technology has been clearly distinguished from the widely used HOLOGRAM holograms, which have machine recognition capabilities. The mechanism of holographic bronzing is to heat and melt the hot melt adhesive layer and the separation layer on the holographic hot stamping material through a hot stamping die on a hot stamping device, and under certain pressure, the information layer holographic grating of the hot stamping material is used. The stripe is separated from the PET substrate, so that the information layer of the aluminum foil is bonded to the surface of the ironing surface and integrated into one to achieve a perfect combination.
There are three types of holographic hot stamping: A. Ordinary version of the hologram is hot; B. Special version of the hologram messy; C. The special version of the hologram is positioned hot. Among them, the third special version of the hologram has been frequently placed on high-grade cigarette packets for nearly two years. It refers to the accurate embossing of a hologram on a specific part of the holographic anti-counterfeit anodized aluminum to a specific position of the cigarette package by photoelectric recognition on the hot stamping device. Hologram positioning hot technology is very difficult, not only requires the printing plant to be equipped with high-performance, high-precision special positioning hot equipment, but also requires high-quality special positioning hot stamping aluminum, the production process must be strictly controlled to produce qualified Tobacco package products. Since the positioning hot stamping mark has high anti-counterfeiting performance, it is used in banknotes and important documents. On behalf of the cigarette case: the best "cloud smoke", "Furong King".
3.3. Soft paper embossing, positioning hot
Due to the popular soft packaging form of high-end cigarettes, the gorgeous post-processing technology that was originally matured on white cardboard has also been transferred to soft paper. Yunnan Qiaotong Packaging and Printing Co., Ltd. first tried in this area and achieved great success. This kind of process completes the bronzing and pressing on one process, and the product has the characteristics of full bronzing, fine graphics, beautiful appearance and no pressure convexity and skew. However, this process is technically difficult, and the accuracy requirements for hot stamping plates, holographic films, and hot stamping machines are extremely high, and various operational indexes must be strict. Because of this, it is difficult to imitate and has a high degree of anti-counterfeiting. It represents the cigarette case: "Fu" and Huize "Little Panda".
3.4. First hot stamping process
In order to highlight the specific patterns and logos on the cigarette packs, in recent years, some printers have introduced a new process of stamping the anodized aluminum and then printing the pattern on the anodized aluminum. The effect is to make the cigarette pack theme more vivid and lively. The key to this process is that the stamping of the anodized aluminum must be firm, and the anodized aluminum must not be pulled back by the printing ink during printing. This will not only affect the quality of the cigarette pack, but also the reversed pull-off of the accumulating aluminum will quickly accumulate on the blanket, which will cause the image dot to be lost, and the partial image will not be printed. As the machine runs, the anodized aluminum powder will Transfer to the ink roller system to accelerate the wear of the ink roller. Therefore, this process should be based on the characteristics of printing paper, and choose the appropriate anodized aluminum to ensure that the electrochemical aluminum can be firmly attached to the surface of the paper. On behalf of cigarette packs: soft pack "Guobin", soft pack blue "eight-happiness", blue "Shilin".
3.5. Micro embossing process
This process uses a micro-pressing plate to press various fine lines on the image of the aluminum foil. The obtained product has the effect of hot stamping and embossing, and the metal texture is very strong. On behalf of the cigarette pack: soft and hard package "national guest", soft package "national package", soft package blue "eight-up", soft package "Furong Wang".