Tan Junqiao: Flexo Printing and Digital Printing Technology Are the Best Choices for the Label Printing Industry
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China's label printing has developed rapidly with the development of commodity production, such as the development of food, beverages, alcohol, daily chemicals, detergents, cosmetics, and electronic home appliances.
At present, there are 6,046 companies in China that are engaged in label printing, mainly in the Yangtze River Delta region (47%), the Pearl River Delta region (26%), and the Bohai Rim region (22%). In addition, there are still central, southwest, and northwest regions. area.
The status quo of technology and technology of label printing applications in China
As the label industry started late in China, its technology, technology, and equipment mainly come from Japan, Southeast Asia and other places. Due to historical reasons, at present, letterpress printing still dominates in China's label printing, accounting for about 70%-75%.
However, there are certain defects and deficiencies in embossing the structure of the equipment, operating technical requirements, printing quality, etc., compared with foreign countries, there is a certain gap, in the future development and market requirements compared with flexo, digital printing, there is a big gap. Can not meet the needs of the current and future development of label printing.
From the point of view of the development of label printing in various countries around the world, especially from the United States and Europe, the situation of countries with developed label printing.
1. United States: Flexographic technology was invented by the United States. Due to the use of water-based inks and UV inks for flexo printing, it is pollution-free and environmentally friendly green printing. It is not only used in the label industry, but also in flexible packaging, cartons, cartons, newspapers, journals and magazines. It is also widely used in other industries.
2. Europe: Relevant data in 2014 showed that UV flexo printing and flexo printing have risen to the fore, forming a growth trend.
Currently in the global label product printing, UV flexo printing has the fastest growth.
In addition, digital printing is non-engraving, no pressure printing, less environmental pollution, no plate-making cost, suitable for small batch, multi-variety, personalized printing and variable data printing. Digital printing technology will develop rapidly from a global perspective.
Digital printing is one of the fastest growing and most promising technologies in the world today. Its technological advantages, market advantages, and service advantages are unmatched by other printing processes.
According to the latest statistics from the US InfoTrends, the digital press market will grow rapidly from 2012 to 2017, and the average annual multi-year growth rate of digital press sales is expected to reach 17.7%.
In 2014, the total installed capacity of digital presses in the world reached 2,500, of which about 300 were from China.
Why do flexible printing and digital printing technologies become the mainstream of label printing?
1. The greatest advantage of flexographic technology is the use of water-based inks and UV inks for printing. It is environmentally friendly green printing. Apart from printing for label printing paper boxes, cartons, etc., it can also print newspapers, primary and secondary school textbooks, etc. It represents today's Green printing.
Digital printing is no edition, no pressure printing, less environmental pollution, flexible, suitable for small batch, variety, variable data printing and personalized printing, in line with future market development needs.
2. Need to develop combination printing
With the development of science and technology and the intensification of market competition, the label industry puts forward higher requirements for combination printing. At present, it can truly represent the high level of label combination. It must be the combination of the most advanced and advanced printing methods and post-processing processes in the world today. That is, a combination of multiple printing processes, printing processes, and post-printing processes.
1 Printing multi-process combinations such as flexographic printing and screen printing, gravure printing process combinations, combination of letterpress and screen printing processes, lithographic printing and screen printing process combinations, taking advantage of each other's advantages in printing, and making use of the advantages of various printing processes. The product reaches the best level.
2 Combination of printing process and post-printing process; combination of printing process with cold transfer, hot stamping, lamination, indentation, embossing, slitting, die-cutting and connection quality inspection.
The advantages of using combination printing are indisputable. Since the printed matter can complete all the printing and post-printing processes on one machine, it has the advantages of overall product quality control, high production efficiency, short product delivery time, more convenient production and processing, and cost savings.
3. Some printing machine manufacturers in China are optimistic about the development of flexo printers, and have increased the development and productivity of flexo printers.
For example, Shanghai Sun Machinery has successfully developed and produced 8-color flexo presses in recent years. The printing speed can reach 150-180 meters per hour, and it is suitable for printing thin films (20um), which can save flexographic materials.
Another example is that Shanghai Goss machinery aims at the first-rate flexo press technology in the world and has successfully developed 8-color flexo presses;
In particular, Zhejiang Weigang, following the development and production of offset printing presses, the market is optimistic about the annual sales of about 100 units, exported to 84 countries. At present, the 8-color flexo printing machine developed and produced by Zhejiang Weigang was unveiled at the Asia International Label Exhibition on December 1, 2015. In four days, the sales contract for six devices has been signed.
ZJR-330 unit type flexo printing machine features: 1. The whole control system adopts Germany Dr. Rexroth's latest microcomputer servo control and operating system, each unit unit is driven by an independent servo motor, the whole machine uses a total of 23 servo motors ( Eight-color group three-die cutting station) provides high-precision register for high-speed operation of the machine. 2. The cylinder is of gas-expandable sleeve type. The roller is light and does not need to be equipped with gears. The operation of changing roller is quick, convenient and simple. Because there is no gear on the platen roller, both the printing quality and the maintenance of the platen roller are reduced. 3. Printing, transfer ink pressure adjustment: version of the roller adopts the roller shoulder way, adjust the printing pressure and the pressure of the ink transfer on the two sides of the corresponding support frame for fine-tuning, version of the roller change the small printing pressure does not require large adjustments, There are special printing requirements also need to do a little bit of fine-tuning, so that the printing efficiency is greatly improved (before the structure of each printing must be re-adjusting the transfer pressure and the printing pressure, both time-consuming and material). 4. The printing roller of this machine is equipped with a water-cooling device, which will not be affected by the high temperature caused by UV curing when printing film materials.
In addition, the well-known foreign companies that produce offset printing and gravure printing machines have also begun to favor flexible printing equipment. Collaboration and mergers and acquisitions with flexographic equipment manufacturers, such as Heidelberg’s acquisition of Gallus in Switzerland, Bobst in Switzerland, and New Quito in Italy, and Gabriel’s acquisition of Cerruti in Italy.
4. Promote the need for "one-stop" development
The so-called "one-stop shop" mainly means that the designated orders are all completed by one customer; that is, the customers who do the packaging also do the label printing, and the manufacturers who make the labels can also produce the color box and other services for the packaging customers. Previously, there was a trend in the printing of investment labels for packaging plants.
Due to the increasingly obvious trend of personalized development, such as the application of two-dimensional codes, the combination of variable information and other traditional printing, especially flexo printing, is becoming more and more common. Inkjet printing or off-line digital printing is usually added to flexographic lines. To achieve a variety of personalized requirements, widely used in color box, high-speed rail tickets, tickets, medical labels, food labels, lubricant labels and anti-counterfeiting areas.
5. In order to encourage the development of flexo printing technology and digital printing technology, the state adopts preferential policies on import tariffs. From January 1, 2009, the import tariff line for flexo printing machines has dropped from 10% to 5%, satellites have dropped from 10% to 3%, and the import tariffs for digital printing presses have dropped from 8% to 3%.
The above situation shows that flexo printing technology and digital printing technology are the best choices for current and future label printing. It is the mainstream of future development and is beyond doubt.