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1. Development Trend of International Flexo Printing Technology
In the early 1980s, in order to achieve long-term sustainable development, the world paid more and more attention to environmental protection and green safety. The water-based inks used in flexographic printing are neither toxic solvents such as benzene, esters, and ketones, which are highly toxic in gravure inks, nor toxic metals in offset inks. In order to protect the environment and human health, food, medicine, household cosmetics and packaging materials that are directly in contact with the human body are all expressly required to use flexographic printing. These measures are highly valued in developed countries such as the United States and Western Europe, and flexo printing is known as green and safe printing. Therefore, flexographic printing has been developing rapidly in recent years. Originally, the printing process was divided into three parts: flat, concave, convex, and lead. Flexo rose from 4% in the early 1950s to 28% in the late 90s. Offset decreased from 55% to 45%, and gravure decreased from 30%. By 20%, Toppan decreased from 10% to 2%.
Changes in various printing methods in the European and American printing markets
Period of printing method Offset gravure relief printing Flexo screen printing Other proportional growth rate proportional growth rate proportional growth rate % 1% 2% 0% 0%
Late 1970s 52% 2% 28% 2% 8% 0% 10% 4% 1% 1% 1% 1%
Early 1990s 46% 2% 26% 2% 6% 0% 18% 6% 2% 2% 2% 5%
45% 0% 20% 0% 2% 0% 28% 4% 2% 2% 3% 4%
2005 35% 0% 15% 0% 1% 0% 32% 2% 2% 0% 15% 6%
Trends of packaging and printing methods in China
1999, 2000, 2005, offset printing 42% 40% 36%
Gravure printing 19% 18% 15%
Flexo printing 30% 32% 39%
Other printing 9% 10% 10%
Flexo's share of major packaging and printing years, corrugated flexible packaging, label carton, USA 1997 75% 95% 75% 30% 20%
2000 80% 95% 85% 40% 40%
Japan 1999 90% 90% less than 10% less than 10% 40%
Europe 1999 Not listed 85% 60% 35% 30%
According to the latest statistics from the Chairman of the First Forum of the US Flexo Printing Technology Foundation (FFTA) in 2004: Flexo represents 75% of the US packaging and printing industry, about US $ 90 billion; the Canadian Packaging Association estimates that its total market share of packaging accounts for its 2.5% of GDP, about 20 billion US dollars. One of the biggest advantages of flexo printing is that the flexo printing process can effectively adapt to the substrates needed in convenient food packaging printing and develop a variety of technologies. Whether it is printed on a plastic film to make a small food bag that can be heated and enjoyed, or a vegetable bag that can be re-closed to maintain a longer fresh period, in short, consumer goods manufacturers in the flexo packaging market The majority, flexo's market share in 2004 increased from 75% to 80% two years ago.
Mr. Billdowndell, the former chairman of the US FTA, is full of confidence in the development of flexo printing in the 21st century. Looking back on the 1990s, with the improvement of science and technology, flexo printing technology, process and equipment have made new breakthroughs, and the product quality has been comparable to that of offset printing and gravure printing. At the end of the 20th century, US flexo sales exceeded US $ 72.8 billion, with an annual growth rate of 7% and a share of 75% in packaging and printing. Here, Mr. Bill focused on a detailed analysis of flexible packaging.
In 2000, flexo printing increased by 9% compared with 1999, the field of flexible packaging increased by 5%, and sales reached 25.8 billion US dollars, accounting for 70% of total flexible packaging. According to statistics, 24% to 26% of all commodities today are packaged in flexible packaging materials, and flexible packaging in the food field is constantly replacing containers such as metal and glass. The advanced technology of flexo printing solves the problem that the film structure is not conducive to printing and promotes its own development.
American consumers will use flexographic packaging products as a preferred option. Although flexo printing is more prone to wear than gravure printing, it is difficult to maintain stable printing quality for large prints. However, in the field of medium and short batch printing, the overall cost of flexo printing is lower than that of gravure printing, which is why flexo can quickly occupy the market.
Flexo printing has become the dominant printing process for flexible packaging, and it will be further developed in the following markets:
Aluminized film used for food, medicine and cosmetics packaging has become a packaging material that has attracted attention;
The growing packaging market for pharmaceuticals and disposable medical devices;
Packaging market for fast-food products that are convenient for food and easy to store.
In addition, packaging users have long noticed that flexible packaging is more conducive to promotion. Not only is it convenient for manufacturers to implement promotional strategies, it can even guide conservative consumers to purchase the same product in different packages. The promotion strategy requires the production method of small batch production and compressed inventory, and flexo printing is easier to achieve this purpose than gravure printing.
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2. New Development of Domestic Flexo Printing Technology
At present, domestic packaging and printing companies have introduced more than 500 production lines of foreign flexographic printing machines (including narrow-width, wide-width, and domestic narrow-width flexographic printing machines developed and produced by themselves. Among them, 70% are imported and 30% are domestic. More than 90% are narrow, and less than 10% are wide.)
Due to the wide range of flexible printing suitable carriers, and the quality of printing has been gradually close to offset printing, gravure printing, has been able to meet the requirements of various users for printed products. According to statistics, flexo printing currently accounts for 30% of cigarette pack printing; trademark label printing accounts for 15%; sticker printing accounts for 35%; other printing accounts for 20%.
With people's emphasis on environmental protection, the continuous improvement of flexo printing technology itself, and new market demand, the application range of flexo printing has been rapidly expanded.
1. Labels are actively printed on flexo
At present, some domestic enterprises with flexo printing equipment use flexo printing in-mold labels according to user requirements. After the in-mold label is printed, a layer of varnish needs to be applied, so that when the label is sent into the mold, the label does not stick to each other, which can improve the accuracy of the label insertion and reduce the molding waste rate of the packaging container.
The applicable fields of in-mold labels are:
1) Shampoo, conditioner, shower gel, detergent, etc .;
2) Large-capacity plastic drums for chemical raw materials, lubricants, refined oil, etc .;
3) Packaging boxes for food ice cream, refrigerated food, and condiments that require long-term freezing and soaking.
At present, domestic in-mold labels are mainly used in oil bottles (barrels), shampoo bottles, household detergent bottles, food plastic bottles, ice cream boxes (lids) and other fields.
Several main features of in-mold labels:
1) Since the label has been integrated with the plastic container, the plastic container does not need to be labeled after molding, saving part of the labor; with the filling production line, the production efficiency can be increased by 5-20%.
2) The label is embedded in the plastic container, which can increase the strength of the plastic container and reduce the resin consumption of the container.
3) The label is integrated with the plastic container, tightly combined, the label will not fall off for a long time.
4) High technical content, not easy to imitate, and has certain anti-counterfeiting performance.
5) The in-mold label is made of the same material as the plastic container, which simplifies the regeneration process and is beneficial to environmental protection.
Satellite flexographic printing presses have also been successfully applied in the preprinting of corrugated boxes
2. Print high-grade beer and wine labels with plastic film
In order to meet the market's need for beer at different levels of consumer groups, in addition to the production of some common beer labels with flexo printing machines in recent years, in some regions and some high-end beer brands, flexo printing technology is used to produce new, transparent plastics Film printing of high-end beer and wine labels. Mainly used to hold 550 litres of small bottles of beer. Such as Dutch brands Heineken (Heineken), Danish Carlsberg (Corlsberg) and domestic varieties of West Lake beer, Jinsheng beer and so on.
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3. Flexible tube printing
Playing cards, paper towels, napkins, toothpaste and cosmetic hoses have also begun to use flexographic printing, which is beneficial to human health and environmental protection.
At present, enterprises such as Zhejiang Ningbo San A Group Co., Ltd., Hangzhou Yuren Paper Co., Ltd., and Zhejiang Sanjian Government Printing Co., Ltd. have begun to use the flexo printing process to produce playing cards. Flexo printing adopts ink printing, with better adhesion and vividness. In addition, the flexo-printed web passes through the paper storage mechanism, the paper receiving mechanism, the reverse printing glazing, the positive and negative positioning, the positive printing four-color glazing, the calendering embossing, the vertical and horizontal cutting, the collection and tearing cards can be sent to the die cutting machine at once , Overprinting and die-cutting are accurate, which greatly improves production efficiency, reduces costs, and guarantees quality. Using flexo printing technology, the products are comparable to foreign products, which is conducive to expanding exports.
4. The ridge bag, Kangmei bag and Tetra Pak use flexographic printing
The roof bag (roof bag) is suitable for a wide range of products, including liquid beverages and dry foods. Among them, dairy products and fruit juice beverages have a large demand and high packaging requirements; they must meet environmental protection requirements, pollution-free, and renewable. . As a kind of liquid milk packaging-ridge bag, the growth in recent years has been very rapid, with an average annual growth rate of 30% since 1994. In the future, it will grow at a relatively high rate. According to statistics, the total national milk production in 2001 was more than 11 million tons, an increase of 22.2% over 2000, and an increase of 25.6% over 2002. It is expected that by 2005 Reached 13.5 million tons. In 2001, the national milk consumption per capita was 8.79 kg, an increase of 1.53 kg from the previous year ’s 7.26 kg (while the world ’s per capita was 100 kg / year), with a growth rate of 21%, which was unprecedented. Among them, in the consumption structure, the proportion of liquid fresh milk consumption has increased, with an annual growth rate of about 30%.
In recent years, there have been Shanghai International Paper Co., Ltd., Jinan Quanhua Packing Products Co., Ltd., Shandong Quanlin Paper Group Co., Ltd., Japan Gulin Company, Yunnan Yuxi Universal Color Printing Carton Youfa Company, Chongqing Huadu Paper More than 10 companies such as Commodity Co., Ltd., Qingdao People's Printing Co., Ltd., Zhejiang Tianwai Packaging and Printing Co., Ltd. introduced domestic and foreign flexographic printing machines to produce ridge bags, kangmei bags and Tetra Pak bags. For example, in order to expand the Chinese dairy packaging market, Shanghai International Paper Co., Ltd. introduced two satellite medium-sized flexo production lines (820mm, 8 colors, 250m / min) from German BHS printing machinery company in 2000 and 2002 respectively. Three shifts of production, mainly for many well-known dairy companies in the country such as "Guangming", "Mengniu", "Yili", etc., as well as beverage, juice companies to provide ridge bags and packaging boxes.
Shandong Quanlin Paper Co., Ltd. introduced a new international technology from the German F & K company in 2001-shaftless transmission (electronic shaft), width 1300mm, 8-color high-speed satellite flexographic printing production line, speed 250m / min About, mainly used in carton packaging and high-end packaging printing such as milk ridge bags, juice combi bags and Tetra Pak bags.
Jinan Quanhua Packaging Products Co., Ltd. introduced a flexographic production line from Canada's Yagafa Company in 2001 to produce ridge bags for fresh milk. The production and sales situation is very good. In 2002, 70 million roof packs were produced, with a sales income of 18 million yuan. In 2003, 28 million yuan was completed, an increase of 6% over the previous year. Since the current output could not meet the needs, another flexo production line was launched in 2003. 35 million yuan was completed in 2004, an increase of 2.5% over the previous year.
Qingdao People's Printing Co., Ltd. is optimistic about the roof package market. It purchased two flexographic production lines from Xi'an Heiniu Machinery Co., Ltd. once in 2000. The current production situation is very good, and it is currently developing towards Tetra Pak products.
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5. Flexo printing plays an increasingly important role in anti-counterfeiting logos and anti-counterfeiting packaging
The current market development requires that the products have the greatest tolerance, flexibility, and environmental protection, which makes the packaging and trademark materials complex and diverse. The design is characterized by spot color blocks, lines, and text, and the printing is characterized by multiple batches and small batches. This is precisely the advantage of narrow-web rotary flexo printing machine; followed by the improvement and development of flexo printing process and supporting technology such as direct plate making, high-quality UV ink, high-precision anilox roller, servo motor, etc. 2. The unit-type flexo printing machine with comprehensive production cost-effective advantages is even more powerful in the high-end market; the second is the production method of flexo printing with the improvement of printing quality, enhanced environmental protection functions, shortened downtime, and the integration of multiple printing and processing techniques. Printing companies are increasingly accepted.
At present, enterprises including Shenzhen Jinjia, Shenzhen Jiaoguan, Shenzhen Weicheng, Foshan Huaxin, Shanghai Toothpaste, Suzhou Jiangtian, Shenyang Times, Guilin Aoqun, etc. have become areas such as cigarette packs, smart labels, stickers, composite sheets, etc. The flagship leads the development trend of the industry.
Taking Jinjia as an example, at present, the company has developed, designed and printed hundreds of brands of high-quality cigarette packs for more than 50 domestic tobacco factories, and has adopted many advanced processes (such as logical light pattern and concave) on these products. Printing sand and screen printing sand, multi-beam laser holography, computer digital coding magnetic anti-counterfeiting technology, D4D anti-counterfeiting technology, transfer gold, silver cardboard printing, three-dimensional holographic printing, etc.), such as the "Honghe 88 "And" Honghe 99 "soft-packed cigarette style, which is a multi-function web printing machine of Jielas EM410, which combines laminating, printing, UV glazing, screen printing, bronzing, concave and convex, die cutting, waste disposal and other functions. Produced, the characteristics of this soft package not only retain the rainbow, refractive, high-end qualities of materials such as laser anodized aluminum paper, anti-counterfeiting film (holographic film), but also the traditional printing effect of dot level and spot color ink. Paper feed is complete. All these have been well received by customers and achieved the win-win goal of tobacco factory and Jinjia.
The sales revenue of Jinjia Company ranges from tens of millions of yuan in the initial stage of the factory to 1.1 billion yuan in 2004. In 2003, the total asset value reached nearly 1 billion yuan. It has become a veritable leader in printing, integrating paper processing and trading. The integrated domestic first-class packaging and printing enterprise group is also an aircraft carrier in the field of packaging and printing. The company has achieved the goal of owning more than ten Jetlas flexographic printing presses within the group in 2003.
Shandong Zibo Taibao Laser Holographic Co., Ltd. also uses flexographic printing combined with a variety of anti-counterfeiting technologies (such as double-card interference pattern technology, fluorescent ink printing, laser transfer film technology, laser rainbow scratch-off anti-counterfeiting packaging technology, inlay Technology, coin pattern technology and miniature technology, anti-counterfeiting digital search technology, etc.), producing anti-counterfeiting trademark labels and anti-counterfeiting packaging for many enterprises. Such as Banlangen, cold granules, bezoar snake gall bladder Chuanbei liquid and other products of Confucian Pharmaceutical Factory; Weifang Tianyang Pharmaceutical's antipyretic oral liquid box, etc. These have good anti-counterfeiting performance and are welcomed by customers.
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6. Scratch-off invoice
The scratch-off tax invoice is another major change in the development history of China's bill printing industry (from August 1, 2002 and October 1, 2002, Beijing and Shanghai have adopted new versions of scratch-off invoices, and there will be more provinces and cities nationwide in the future Invoices have followed this path). Higher requirements are placed on bill printing equipment, processes, materials, etc. According to the scratch-off printing method of scratch-off tax invoices, the printing process of scratch-off tax invoices in China has begun to enter this field, and the flexo printing process, with the maturity of technology, will use its low cost and high The advantages of efficiency and the enhancement of anti-counterfeiting performance will accelerate the growth in the scratch-off tax invoice printing market, especially the flexo printing process is not inferior to the printing quality of the screen printing process, and will be in the scratch-off type. The tax invoice market has grown faster. This is not difficult to see from the process used in the newly added scratch tax invoice production lines in Beijing and Shanghai. For example, Beijing Silver Peony Printing Co., Ltd., Shanghai Securities Printing Factory and Shanghai North Printing Factory, etc., have also introduced flexo production lines for printing scratch-off tax invoices.
In addition, high-end computer tickets, lottery tickets, tickets, magnetic card tickets, boarding passes, luggage belts, etc. are also new applications of flexographic printing in the past two years.
As information technology is being paid attention to by the media and people from all walks of life, all walks of life are actively exploring and trying to successfully integrate information technology with traditional industries. Jiaoguan has successfully developed and developed a combination of IT packaging and labeling technology, that is, applying IT technology to packaging and printing, printing the serial number and bar code of each product on the advanced flexographic printing processing line, and only consumption Only the person can get the 36-digit random code, and log these two sets of numbers into the Internet at the same time. In this way, not only can the purpose of anti-counterfeiting be effectively achieved, but also the product's logistics management level will be greatly improved after the product has a serial number (ID number). For example, the Coca-Cola pollution incident occurred in Belgium in 1999, when the Coca-Cola Company had to carry out a large number of recycling operations, resulting in huge economic and reputation losses. But if each product has a serial number, it is easy to find out which production line is contaminated, and the handling time of the accident can be shortened.
The company's practice has proved that flexographic printing has unparalleled advantages in special notes, high-end labels and packaging printing, and can fully meet the technical requirements of IT packaging and label printing. The reason why the company adopts the Jetlas EM410 is firstly because IT packaging, labels, and special receipts have increased performance requirements for printing presses, and the machine must have a very strong comprehensive processing capability. The flexibility of EM410 is very strong. The computer-controlled printing line of ten-color flexo (with a set of cylinder screen printing) can complete processes such as laser stamping, bronzing, embossing, special inks, magnetic recording, and scratch awards.
Looking at the above, China's flexographic printing technology is in the stage of development. With the rapid development of China's packaging and printing industry, it will surely become the fastest growing printing method in the packaging and printing industry like North America, Western Europe and Australia.
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