Raiders for common methods of post-printing process of cigarette pack printing

1. Gold sweep

A process between hot stamping and gold printing, which is characterized by fast speed and low cost, regardless of the thickness of the text and the size of the area, you can get the desired effect. The color of gold powder is also diverse, such as gold, silver, red gold, red copper, green, sepia, lemon, peacock blue, etc., also have different granularity, showing different visual effects. In foreign countries, a kind of gold powder with a diamond-like effect is also popular. This gold powder has four particle sizes and 10 colors, which can make the overall picture and text show a set of diamond patterns under the illumination of light, reflecting the unique colorful light. effect. Representative cigarette pack: red "Huangshan".

2. Holographic hot stamping

The laser hologram is made according to the principle of laser interference and using spatial frequency coding. Laser holograms have been used in the field of anti-counterfeiting in the 1980s due to their vivid colors, obvious layers, vivid images, changeable optical transformation effects, and high information and technical content. The latest OVD technology has been clearly distinguished from the widely used HOLOGRAM holograms, and some holograms already have machine identification functions. The mechanism of holographic hot stamping is that the hot melt adhesive layer and the separation layer on the holographic hot stamping material are heated and melted by the hot stamping die on the hot stamping equipment, and under a certain pressure, the information layer of the hot stamping material is holographic grating The stripe is separated from the PET base material, so that the aluminum foil information layer is bonded to the ironing surface and melted into one body to achieve a perfect combination.

There are three types of holographic hot stamping:

A. The ordinary version of the hologram is hot;

B. The special version of the hologram is chaotically hot;

C. Special edition hologram positioning hot. Among them, the third special version of hologram positioning hot appeared frequently on high-end cigarette packs in the past two years. It refers to that the hologram of a specific part of the holographic anti-counterfeiting hot stamping anodized aluminum is accurately stamped on a specific position of the cigarette pack by photoelectric identification on the hot stamping equipment. The hologram positioning technology is very difficult, not only requires printing plants to be equipped with high-performance and high-precision special positioning equipment, but also requires high-quality special positioning hot stamping anodized aluminum, and the production process must be strictly controlled to produce qualified Cigarette products. Because the positioning hot stamping logo has high anti-counterfeiting performance, it is used in banknotes and important documents. Representative cigarette case: Need for "Yunyan", "Furong King".

3. Soft paper relief printing, positioning hot

Due to the popular soft packaging 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 make an attempt in this regard 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 and skew. However, this process technology is difficult, and the precision requirements for hot stamping plates, holographic films, and hot stamping machines are extremely high, and all operational indicators must be strict. Because of this, it is difficult to be imitated, and the degree of anti-counterfeiting is high. It represents the cigarette case: "Fu" and Huize "Little Panda".

4. The process of first ironing and then printing

In order to highlight the specific patterns and logos on cigarette packs, in recent years, some printing houses have introduced a new process of stamping anodized aluminum first, and then printing patterns on the anodized aluminum. The resulting effect makes the cigarette pack theme more vivid and lively. The key to this process is that the hot stamping of anodized aluminum must be firm. During printing, the anodized aluminum must not be pulled back by the printing ink. This not only affects the quality of the cigarette pack, but also the anodized aluminum that is pulled back will quickly accumulate on the blanket, ranging from the loss of the image dots to the loss of the partial image. 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 select the appropriate anodized aluminum according to the characteristics of the printing paper to ensure that the anodized aluminum can be firmly attached to the surface of the paper. Representative cigarette packs: soft pack "State Guest", soft pack blue "Happiness", blue "Shilin".

5. Micro-embossing process

This process uses micro-embossing to press various fine lines on the aluminum foil paper graphics and text. The obtained product has the effects of hot stamping and embossing, and the metal texture is very strong. Representative cigarette packs: soft and hard pack "Guobin", soft pack "national pack", soft pack blue "Happiness", soft pack "Furong Wang".

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