Flexo preprinting two advantages gradually win in the corrugated box printing market

In recent years, flexographic pre-printing has become more and more powerful in the field of corrugated box printing, which is entirely due to its outstanding advantages in production cost and production efficiency, which is also an important weight compared with traditional offset printing methods. And thus attracted more and more attention from corrugated box printing companies.

Advantage 1: low overall cost

The most convenient way to compromise a new technology or process is its cost advantage. The cost advantage of flexo preprinting is reflected in its ability to reduce paper requirements, which can result in significant savings in overall costs.

In the process of flexo preprinting, the corrugated board is less damaged, and the moisture control of corrugated board is relatively stable. Under the same index requirement, the corrugated board after flexo printing is 20% to 50% higher than the offset printing process. The compressive strength is 10% to 30% higher than that of the offset printing process, and the compressive strength of the final formed corrugated box is 10% to 30% higher than that of the offset printing process.

Therefore, under the premise of ensuring the printing effect and the corrugated box strength meets the requirements, the use of flexo preprinting can reduce the grade and basis of the paper. In summary, the application of flexo preprinting can save 20% of paper costs, which is believed to be the dream of all corrugated box printing companies.

In addition, according to Wang Bo, manager of Fengtai Packaging Technology Department, “Before our company used KBA Rapida 162 Offset Press, a production line needs to be equipped with 4 operators, and now it has introduced the Northwestern RXJ611600 web of paper. Printing machine, a production line only needs to be equipped with 3 or 2 operators, which helps our company save labor costs."

However, the advantages of flexo preprinting in terms of overall cost are also relative. Wang Bo pointed out: “Because of the high cost of flexographic printing equipment and plate making, the overall cost of flexo preprinting is higher than the offset printing process when orders are small. However, compared with the PS version, the flexographic printing plate has a higher printing durability, so when producing long orders, the comprehensive cost advantage of applying flexo preprinting will be highlighted, for example, when the order reaches 60,000 sheets, the flexo preprint The combined cost of printing and offset printing processes is equivalent. When the order reaches 100,000 or more, the comprehensive cost of using flexo preprinting is lower than the combined cost of the offset printing process, and the larger the order quantity, the higher the cost saving index. ”

Advantage 2: high production efficiency

Flexographic pre-printing equipment is mainly based on roll-to-roll flexo printing machine. The biggest advantage is that the roll paper can be collected into rolls after printing, and then sent directly to the paper-making station on the corrugated board production line, with corrugated The cardboard is subjected to one-time retanning bonding, so that the advantages of automatic and efficient production of the flexographic printing equipment and the corrugated cardboard printing line can be fully utilized. In contrast, the offset printing process uses a sheet-fed printing device, which cannot be used in terms of speed. The roll-to-roll printing method is comparable, and the offset printing device is more troublesome than the flexo printing pre-printing on the connection to the corrugated box printing line.

Wang Bo compared the actual production efficiency of the flexo preprinting and offset printing process with an example of a 300,000 eight-treasure porridge packaging box. “In the printing process, our company used the KBA Rapida 162 offset press in the past, and used the offline single machine for glazing. After the flexo pre-printing process, it can be completed by one-line printing. From the printing to the product Finish, the offset printing process takes 46 hours, and the flexo preprinting only takes 10.5 hours; in the paper and post-processing process, the cardboard line using the offset printing process takes 10 hours, and the plaque requires 33 hours. When the pre-printing of flexo printing is used, the reel color surface can be directly put on the machine, eliminating the need for post-laying, which saves 33 hours, and can reduce the waiting time between processes and shorten the delivery cycle. ""

Using flexo printing technology, the production efficiency is improved, the quality is more stable, and the production capacity is effectively guaranteed. Fengtai Packaging has won high trust and wide recognition from customers such as Wahaha, China Resources Beer, Tsingtao Brewery and Yanjing Beer. Wang Bo said, "At present, the output of our company's flexographic preprinted products has exceeded the offset printing process. In the future, our company will continue to expand the application of flexographic preprinting technology, through process optimization and reduce the cost of raw and auxiliary materials, will be medium batch The printed matter gradually turned to the flexo preprinting process, allowing more customers to experience the advantages of flexo preprinting." (Editor: Liu Yidong)

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