From the perspective of the development of carton quality, the printing of corrugated cardboard boxes must gradually develop towards high-end, high-quality, multi-color, and strong visual dot printing. Commodity packaging must not only have a packaging function, but also play an advertising role to attract consumers and achieve the purpose of promotion. It also has a beautiful appearance and is healthy and environmentally friendly.
To achieve the above effects, the production of carton sets high requirements for plate making, ink, printing equipment, etc. Production equipment must develop in the direction of high speed, multi-color, accurate cutting, small error, and high technical content. In addition, the corrugated box industry should also broaden its products and service targets, and actively develop new products such as micro-fine corrugated boxes, supermarket goods consignments, and honeycomb paperboards, and it should develop in both breadth and depth.
From the process point of view, the process of mounting after offset printing, due to pressure and excessive moisture left in the colloid, makes it difficult for the technical indicators such as flat compression strength and adhesive strength of the carton to meet the packaging requirements of high-end products. The flexographic direct printing also has the uneven surface of the cardboard, which is easy to cause the phenomenon of the washboard. The precision of water-based printing slotting machine is not high, and the quality of printing quality is difficult to improve.
The pre-printing process absorbs the above advantages and discards their shortcomings. First use high-quality flexo or gravure printing equipment to print high-end color graphics to meet the needs of promotional products, and then produce cardboard by tile line, and finally die-cut into boxes to ensure the strength of the cardboard, to achieve high-end packaging protection and promotion The dual function.
From the efficiency point of view, the corrugated production line speed can reach 120mmin, which meets the needs of high-speed production. The high-speed automatic die-cutting machine is die-cut into boxes, which greatly shortens the production cycle and meets the requirements of customers for timely supply.
From the point of view of raw material use, facial paper is a high-grade coated paper, and the die-cutting pressure of cardboard is small, which can ensure a good corrugated shape, especially to meet the development trend of low-gram weight and high-strength cardboard, which reduces the basis weight and saves costs. . Pre-printing reduces the overall cost of the carton in both process control and production efficiency. Pre-printing is undoubtedly the best way for high-quality, high-volume production.
Screen printing and digital printing can obtain high printing quality and visual effects. The screen printing plate making is simple and low in cost, and the packaging anti-counterfeiting function can be realized by changing the plate. The digital printing method can also be used for anti-counterfeiting processing by directly modifying the digital file. However, the production efficiency of the two is low, which can not meet the timely supply of large quantities of products. It is suitable for printing small batches, personalized on-demand printing products, or as a useful supplement to other methods. It plays a role in anti-counterfeiting and post-press special effect processing. .
On the whole, in the domestic carton industry, the three conventional corrugated paper box printing methods are more commonly used and become the mainstream method of corrugated paper box printing. The new printing box making method has not been fully grasped because of technical problems such as equipment, materials, processes, and operations. It is a large investment and the difficulty of promotion is still relatively large. However, in order to improve the product grade, reduce the total cost of the carton, obtain the maximum profit, and increase the competitive advantage in the market, it is imperative to adopt a new printing box making process.
Judging from the overall development of the carton printing process, the traditional printing methods will continue to develop. Plastic gravure printing, carton gravure printing, and web offset printing technology need to be promoted and improved. Direct offset printing and pre-printed corrugated carton production technology, a new type of digital The production method should also attract our attention. The plate making and printing technology of the flexographic direct printing corrugated box process needs to be improved overall, but with the continuous application of new technologies, the flexographic printing method will become the mainstream production method in a long time because of its quality and efficiency.
Carton companies and users should fully understand the strengths and weaknesses of each production process, and choose a reasonable way to achieve the goal of low input and high output. For enterprises newly equipped with production equipment, it is also necessary to consider all process factors and invest cautiously.
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