Flexible Packaging Digital Printing China Application Report.

In May 2018, the article "The Road to Innovation in Digital Film Printing" mainly talks about the production and operation of domestic wide-format flexible film special digital machines, which leads to an overview of the field of innovative application of digitally adaptive products. . .

After half a year, these innovative graphic arts products are believed to have gradually become known to the public, but as for the details of the product value and production process, I believe there are still many unknowns. Regarding these related issues, there are often friends in the industry who communicate with them. Therefore, it is necessary to focus on explaining some of the issues that everyone cares about.

At present, the main models of soft film digital printing equipment are HP-indigo20000 with 730mm wide screen and HP-indigo ws6800 with 317mm narrow screen, and as a digital printing equipment for composite packaging bags, wide-format models should be selected. At present, the printing film materials in China are mainly BOPP, PET and PA rolls, of which 2.5-filament BOPP film is the main material. As far as the printing effect is concerned, its biggest features are accurate overprinting, bright colors and strong imitation ability. The products produced are more delicate and richer than traditional gravure printing. In place, when the white ink is thick enough, the hue deviation between the two will not exceed 10%, which means that the quality of the current digital soft film printing is generally better than that of traditional gravure printing. The bright and bright texture of digital printing is still difficult! However, the fly in the ointment of the digital machine is that the above two models currently do not have "gold and silver" two spot color metal inks. In actual work, if the product structure is supported by aluminized film, we will use "yellow transparent aluminum" without a white ink support bottom. ” Process to show “gold”, and its effect is very good. This process is also very good in mass production. The reason is that the traditional gold ink has a strong covering power, and the effect of showing “golden light” is not as good as that of “yellow transparent”. "Aluminum" is shining brightly! If you want to get "silver", you can use "hollow out aluminum" to obtain pure aluminum metal silver or "gray ink through aluminum" to imitate the special silver ink color. This kind of technology has no effect on the later mass production! However, it should be noted that if there is no aluminum film layer in the material structure, such as BOPP/PE, BOPP/PET/CPP, etc., the above process cannot achieve the effect of "special gold and silver" metal ink.

When digital wide-format flexible film printing was first used in the field of small-batch flexible bags and product proofing in China in 2016, the biggest difficulty at that time was how to use traditional equipment to compound ultra-short film rolls and cut the quality of bags. Through continuous exploration, the standard length of bag-making proofing established by us is about 130 meters, that is, 130 meters of digital printing film material is used for later compounding and bag-making, and the whole process the total loss must be controlled within 40 meters! This project has attracted the attention of foreign trade sample bag customers since its listing. Through research, we found that this technical project has not yet appeared in foreign countries. In the past two years, we have also undertaken many foreign trade sample bag orders. Therefore, our flexible bag digital proofing and small batch production not only it can meet domestic needs and also develop international markets.

The question of who is more cost-effective between soft film digital printing and traditional gravure printing is the most concerned issue. Digital printing is plateless direct printing, which saves the cost and time of copper plate customization, but it should be noted that the cost per square meter is copper plate printing. More than ten times the production method, the choice of the two production methods must rely on the cost comparison to make the best choice. Without considering the time, for example, a seven-color 50*110mm conventional aluminized tea bag is sealed in the new Product trial and error marketing often only requires 5,000 to 10,000 pieces. The total cost of making such bags by traditional copperplate printing will not be less than 4,000 yuan, but if digital printing is used to solve the problem, it only costs about 3,000 yuan! But if the bag has less than four colors, the total cost of the two is basically the same, and if the bag needs 20,000 or more, digital printing is obviously more expensive than copperplate printing. From the above, digital printing is more suitable for high value-added products with rich colors, series layout, small batch production or small sample proofing! However, in order to reduce production costs, there are also some product models of combined printing of uniform size, bag type and material, but it is obviously not suitable for commodity development. After all, the packaging of commodities is the embodiment of commercial value. For those products such as eight-side seals and special composite materials that are difficult to make and need to be worn out by hundreds of meters in the initial bag making, the cost of a single bag is quite expensive, but the cost of a single bag is quite expensive, but the cost of a single bag is quite expensive, but the cost of a single bag is quite expensive. Conventional bag types such as zipper bags and those commonly used plastic-plastic composite and paper-plastic composite materials can be customized at the limit of 130 meters, and the price is quite close to the people!

Time has entered 2022. In this era of innovation, miracles can happen at any time. Digital soft film printing products will be used and promoted in more fields. At present, in addition to personalized bottle labels, there are also personalized films on the market. The trolley case made of composite plastic panels has a priceless personality, which has been well verified on this product! I believe that in the near future, there will be more flexible film digital printing products in front of everyone. Let us join hands to create a bright future for digital printing.