Five technologies worthy of attention in the field of paper packaging and printing
1. On-line cold foil technology for offset printing
Traditional hot stamping requires a special metal hot stamping plate. The required hot stamping material is transferred to the surface of the printing material by heating and pressing. The speed is relatively slow. It is difficult to online hot stamping with offset printing. Off-line cold stamping technology is to paste the graphics to be printed on the surface of the substrate through the adhesive under normal temperature conditions. The realization method is to directly use the two units of the original offset printing machine, a group of printed adhesive layers, and a group of transferred metal hot stamping foils.
Advantages: fast hot stamping speed, high efficiency; one-pass paper printing and metal foil transfer digital printing, high registration accuracy; cold stamping plate resolution can reach the offset printing plate resolution, can be fine stamping ; At room temperature, without heating, can be hot stamped on the surface of temperature-sensitive materials; save energy.
2. Web bronzing technology
The web bronzing machine has already taken the lead in obtaining mature applications in the cigarette packet market in China, and will achieve greater development as the market demand for high-efficiency and high-quality hot stamping jobs increases. At present, the more mature companies are: Changde Jinpeng Printing Co., Ltd., Yunnan Qiaotong Packaging and Printing Co., Ltd., Yunnan Yuxi Printing Co., Ltd., Chongqing Hongsheng Printing Co., Ltd., Yunnan Jiujiu Color Printing Co., Ltd. and Dongguan Zhiyuan Color Printing Co., Ltd. Companies, etc. Companies that often encounter large-volume, high-foil stamping process requirements, and short delivery times for customers can pay special attention to web bronzing technology.
3. Fixed-length stretch composite printing to avoid laser plate seam technology
Laser holographic laser transfer paper is a new type of packaging material that is more and more widely used in the packaging and printing industry at home and abroad. However, a major problem is that laser printing seam RIP is easy to produce when printing on a rotary gravure printing machine, causing great waste. At present, there are mainly two kinds of fixed-stretching composite printing technology solutions to avoid laser plate seam, which are online and offline.
Packaging and printing enterprises can make reasonable choices based on their own funds and actual production conditions. If the company has a rotary gravure printing equipment, it can use an offline solution to suppress the embossing, buy laser aluminized transfer paper that can avoid the plate gap from the composite paper manufacturer, and only need to modify the paper feeding mechanism of the original rotary printing equipment. Yes, such companies have less investment and technical risks.
4. Laser pattern imprint transfer technology
Laser pattern embossing transfer technology is a high-tech that integrates decoration, anti-counterfeiting and environmental protection. Its outstanding advantages are: compliance with environmental protection requirements, good anti-counterfeiting effect and low production costs.
5. Combined printing technology
In a sense, the combination printing machine is no longer just a printing device, but a streamlined production line that integrates multiple printing and post-press processing technologies.
Combination printing is a combination of multiple printing process technologies, that is, integrating multiple printing methods (such as flexo, offset, gravure, screen inkjet printing, and even digital printing) and post-press processing technology on the same production line ( (Such as glazing, laminating, die cutting, indentation, hot stamping, embossing, etc.), combining the advantages of various printing and post-press processing methods, taking advantage of the shortcomings to obtain the best printing effect.
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