New development of offset printing ink market in China
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With the steady development of China's offset printing market in Shanghai, offset printing inks have also developed rapidly, and their quality levels are basically close to or reach the international advanced level. According to incomplete statistics, in the past two years, Shenzhen printing recruitment, the proportion of offset inks in China's ink market has risen to 50% to 60%, still dominant, and this proportion will not exist for a long time in the future. Great change.
New requirements for inks in the offset market
At present, Hualian printing, publishing and packaging prints are gradually developing towards individualization, diversification and high-end. In order to meet the new changes in the printing market, printing companies constantly update and improve printing equipment. The recruitment of printing talents for high-speed, multi-color, low-pollution, high-efficiency printing equipment has also placed new demands on ink manufacturers.
1. Printing equipment update
At the just-concluded drupa2008 exhibition, Japan Akiyama Co., Ltd. launched MEGAJP5P5P540DC+RF Shuangfeida + double-sided glazing large 5+5 color single-sided double-sided multi-color offset printing machine with a maximum speed of 14,000 sheets/hour; Mitsubishi Corporation Introduced DIAMONDV3000R-8III single-sided eight-color and double-sided 4+4 color (with flip mechanism) printing press China printing and packaging research, the maximum speed of 16200 / hour; KBA's Rapida 106 maximum speed 18,000 sheets/hour, and the boot preparation time is very short. Komori has also introduced high-speed presses that are flexible in responding to small-volume printing, significantly reducing lead times, achieving high value-added printing, and using disposable paper-feeding methods.
The characteristics of the above printing machine are summarized as follows: high speed, high intelligence, high quality, shortened printing cycle, and improved printing production efficiency.
High efficiency should be shifted from simply increasing printing speed to improving production efficiency, reducing labor intensity, shortening printing preparation time, reducing unnecessary downtime, and achieving offset automation (including automatic plate loading, automatic ink supply, water supply, ink volume preset, automatic Adjust the printing materials, automatic cleaning and other functions). A Heidelberg lecturer's statistics: In China, a Heidelberg printing press does not stop 24 hours a day, 365 days a year. The annual report of China's printing industry, its annual printing volume is only equivalent to 8 months of printing of a foreign Heidelberg printing press. That is, a foreign printing machine can complete the domestic one-year printing in 2/3 of the time. The reason is that the domestic printing machine has low production efficiency and automation, and there are many manual operations. In today's personalized era printing in Shenzhen, the demand for short-run jobs with small batches, high quality and high efficiency has increased dramatically. Compared with the shorter and shorter printing time, the preparation time for loading and unloading plates and school plates is occupied in the order production process. Gradually increasing the proportion of engraving, such as an order with a volume of 2,000 sheets, if the speed of the printing press is 10,000 sheets/hour, it takes only 12 minutes to print the Kunming printing, and the preparation time of the manual loading and unloading version and the school edition However, it is far more than 12 minutes, and if the automation device is used, the preparation time can be greatly shortened. In a short-run job printing factory, Hongbo Printing, the printing volume of each batch of work is generally 500 ~ 5000, using the automatic version and the school version of the Heidelberg printing press, a shift of 12 hours can actually print 33 four-color live Beijing screen printing, that is, an average job can be printed in only 21.82 minutes, including preparation time and printing time.
A recent survey conducted by the United States on the demand for offset printing shows that Shantou Printing has increased the interest of most offset printing companies in the integrated offset automation system. 51% of the respondents believe that the integrated automation system has brought certain benefits, 64%. The respondents believe that the integrated automation system will be a very important printing manager for the printing company in the coming year, and the printing factory will gradually adopt the automated production method.
To meet the requirements of high-speed printing, short-run jobs, and integrated automation, offset inks produced by ink manufacturers must have the following properties.
(1) High-speed adaptability: It can adapt to printing speeds of 14,000 sheets/hour or more.
(2) Quick-drying performance: Due to the short production cycle, short-run jobs need to enter the four-color printing machine of the subsequent process immediately after printing, such as light, film or die-cutting. Therefore, the ink can be quickly dried to facilitate post-processing. Going smoothly.
(3) Water-resistant printing envelope, ink and ink are quickly balanced.
(4) Stability during printing: The ink transfer rate and dot gain rate do not change with changes in speed, time, and temperature.
(5) Packaging is convenient for printing factories: vacuum tanks, plunger tanks for automatic ink supply systems, barrels, cans, etc.
(6) The ink has versatility.
2. The appearance of a single sheet of eight-color double-sided offset press
The single-sheet eight-color double-sided offset press provides fast printing speed and high efficiency printing, providing users with a solution to improve printing productivity and profitability. According to incomplete statistics, the single-paper eight-color double-sided offset printing machine installed in China is mainly concentrated in Guangdong, with more than 8 units; 4 in Bohai Rim; 2 in Northeast China; 2 in Hubei; 1 in Shandong; Xinjiang 1 station. The printing quality of the eight-color double-sided offset printing machine can meet or exceed the four-color offset printing machine, but the premise is that the appropriate ink must be selected according to the type of paper.
3. The appearance of light paper
People who often visit bookstores will find that medium and high-end books tend to use paper that is light in texture and soft in color, which is called light paper. Lightweight paper is a light offset paper bag that originated in Sweden's Munkkkal (Mengkendale). When it was first introduced to China, it was named "Mengken". Because it is the earliest introduced light offset paper printing machine in China, it is now customary to call this type of paper "Mengken Paper". The wide application of light paper is the development trend of the book publishing industry. In developed countries such as Europe, America and Japan, more than 95% of the books in the bookstores are printed by the national printing managers' annual meeting with light paper, which requires the offset inks to adapt to this. The nature of the paper. If you use light paper to print high-end books, the use of waterless offset inks is better.
4. Small and medium format multicolor offset printing presses are emerging
Due to the rapid development of offset printing machine technology, small and medium-format multi-color offset printing presses are entering the domestic commercial color printing market on a large scale, which is the result of commercial printing to differentiate, functional and short version. The technology for high-speed large and medium-format multi-color offset printing machines, such as on-line glazing, UV printing and flip printing, is arranged on small and medium-format offset printing machines to make them flexible, fast and technically capable, and to improve the added value of printed matter while printing stickers. , expanding the field of application.
Some forward-thinking printers have begun to adopt the four-color offset printing process to connect the light on the line, indicating the broad prospects of the short-run color printing business. Some offset press manufacturers have also introduced equipment to meet new market trends, such as Heidelberg's launch of the Speedmaster M52 online glazing and UV offset press compact presses, which require ink to be slow-drying on the press, on the substrate. Fast drying performance. In order to meet the requirements of users for different quality and price grade ink products, Tianjin Toyo Ink Co., Ltd. has launched TNS, CAIXIAON, TGSON and other offset high-speed, medium- and low-grade inks for users to choose.
5. Environmental requirements
In recent years, with the economic development of label exhibitions, the voice of environmental protection has become more and more high. The printing industry has put forward new requirements for non-toxic and non-polluting of offset printing inks. Environmentally-friendly offset printing inks have received extensive attention from users and have begun to be applied to packaging. Newspapers, commercial printing, etc. Environmentally friendly offset printing inks have obtained large-scale application of Hualian printing in the United States, Japan and other countries, but there are still quite few applications in China. There are technical factors, but the main reason is insufficient understanding.
Environmentally friendly offset inks are mainly aromatic-free soy inks. The PAH (polycyclic aromatic hydrocarbon) contained in the traditional ink composition is a volatile solvent printing film, which is harmful to the human body; the volatile organic compound contained therein not only increases air pollution, but also causes harm to the human body. Offset soy ink uses soybean environmentally friendly materials instead of some petroleum solvents to reduce environmental pollution and human damage. The non-aromatic soybean oil (AFSOY) sheet-fed offset ink, rotary ink and thermosetting rotary ink produced by Tianjin Dongyang Ink Co., Ltd. have good printing suitability. Jiaxing Printing can also meet environmental protection requirements and provide corresponding environmental protection. prove.
Domestic offset ink market status
In recent years, with the development of China's printing industry, Shanghai's printing quotation, the pace of the development of the domestic ink industry is also accelerating. With the installation and commissioning of a large number of imported and domestic high-speed offset presses, the adoption of new printing materials, and the special requirements of new printing processes and post-press processing, ink manufacturers rely on scientific and technological progress Hongbo printing to continuously develop new products that are marketable. Improve the old products, the product variety is increasingly enriched in the journal publishing, and the product quality is gradually approaching the international advanced level. The improvement of ink production equipment and the improvement of production technology have also gradually attracted the attention of various ink manufacturers.
In the past 10 years, major domestic ink manufacturers in Tianjin, Shanghai, Hangzhou, Shenzhen, Taiyuan and other places have paid attention to collecting market information printing materials, and constantly developed new offset printing ink products that meet market demand, such as bright and fast drying inks, cardboard inks, and dumbs. Powder paper ink (matte paper ink), news rotary ink, cold-set offset rotary ink, UV ink, offset synthetic paper ink, printing iron ink, and the production of thermosetting offset rotary inks newly introduced in China in recent years. It has been increasing year by year, and its quality is close to the international advanced level of three-dimensional printing, which has been recognized by domestic and foreign printing customers. In addition to replacing the high-end offset printing inks that were imported in the past in the domestic market, some domestic offset printing ink products have also entered the international market. Some high value-added special offset inks have also been successfully developed to meet the requirements of special printing.
Sheetfed offset inks have maintained a steady upward trend in the domestic printing market. With the innovation and improvement of printing presses, domestic sheetfed offset inks have adapted to high speed, multicolor, fast drying, high efficiency and energy saving. Demand, constantly develop new products every day, expand the application in the field of packaging and printing, such as tobacco and alcohol, food, cosmetics and other industries, to meet the book printing "high light, high concentration" and packaging printing "quick drying and anti-friction" Performance requirements for other aspects; Rotary offset inks are also adapted to the fast-growing demand for newspaper and commercial printing, and continue to improve quality and output. At present, China's offset printing ink manufacturing enterprises mainly include: Tianjin Dongyang Ink Co., Ltd., Taiyuan Gaoshi Laure Ink Co., Ltd., Hanghua Ink Chemical Co., Ltd., Shanghai Peony Ink Co., Ltd., Shenzhen Shenri Ink Co., Ltd., Shanghai DIC Ink Co., Ltd. Shanghai Ink Co., Ltd., Suzhou Coswood Ink Co., Ltd., Tianjin Tiannv Chemical Group Co., Ltd.
At present, China's offset printing ink products mainly use offset printing bright and fast drying inks, non-thermosetting offset printing rotary inks as the leading products for printing Shenzhen, followed by thermosetting offset printing rotary ink, UV offset printing ink, synthetic paper offset printing ink, offset printing iron ink, Waterless offset inks, offset metal inks and special inks for various offset printing. Moreover, domestic thermosetting offset rotary inks and UV offset inks have developed rapidly in the past two years.
The gap between domestic offset inks
Compared with foreign similar ink products, domestic offset printing inks still have many deficiencies in rice paper printing, which cannot fully meet the needs of today's packaging and publishing printing market.
(1) Offset ink manufacturing process. The ink production process is low in automation, the ink detection method is low in automation, the human factors affect the printing industry press, and the stability of the raw materials is poor, resulting in gaps in the quality consistency and stability of the ink products.
(2) Standardization of offset ink color. Internationally, offset ink color standards include European standards, Japanese standards, and Pantone standards in the United States, and China's offset inks currently do not have their own color standards.
(3) Wide color gamut ink. The use of four-color inks of wide color gamut instead of six-color or seven-color inks for printing can improve the quality of printed products and improve production efficiency, while the domestic wide-gamut offset printing ink field needs to be developed.
(4) Four-color inks suitable for high-speed overprinting. Domestic four-color overprint inks still need to be further improved in terms of high concentration, high transparency and vividness, and excellent overprinting.
(5) Environmentally friendly offset printing ink. At present, the printing industry in China faces great environmental pressure, because most of the inks used in printing contain organic solvents (compared with solvent-based inks, there are few organic solvents in offset inks). Letterpress printing, evaporation of organic solvents And emissions can cause environmental pollution. In addition, the ink contains harmful heavy metal elements such as lead, chromium, cadmium, mercury, arsenic and antimony, which are extremely harmful to the human body and the environment. From the perspective of environmental protection and health, more and more users are taking low toxicity, environmental protection and pollution-free as an important condition when purchasing ink. In China, the development of environmentally friendly offset printing inks is still subject to many factors, but for the Chinese ink industry, the small printing press, the ultimate realization and promotion of green ink is the development goal and the ultimate pursuit.
(6) Waterless offset ink. Waterless offset printing does not use fountain solution. It can be said that it has greatly contributed to environmental protection. It is expected that waterless offset printing in the past two years should have a good space for development in light paper printing. However, waterless offset printing inks are greatly affected by the ambient temperature during the actual printing process. The optical disc printing machine is easy to get dirty, and also requires special waterless offset printing equipment. In addition, because the waterless offset printing plate is relatively expensive for notebook printing, its application and promotion in China are limited, and the development is slow.
The direction of future efforts
(1) Shorten the distance. As the production of offset inks gradually increases, the production process of offset printing inks is gradually developing printing in Dongguan, introducing advanced equipment to improve the control level of ink production processes in China; increasing the consistency of ink quality by increasing the output of inks in batches. stability.
(2) Establish China's own color standards for offset inks. The first work carried out by the National Printing Standardization Technical Committee and Tianjin Toyo Ink Co., Ltd. to establish the “National Ink (Offset Printing) Printing Standardization Test Base” is to establish China's own color standards for offset inks.
On October 26, 2007, business card printing, National Printing Standardization Technical Committee held the "China Inkjet Ink Color Standard Drafting Group Establishment Meeting" in Beijing, Tianjin Dongyang Ink Co., Ltd., Hanghua Ink Chemical Co., Ltd., Jindong Paper Co., Ltd., Yachang Enterprise Group Representatives from companies and other related companies attended the meeting. Representatives from Shenzhen Haichuan Company introduced the relevant contents of the “China Color System” standard at the meeting. The meeting made preliminary planning and printing cd on the "Chinese offset printing ink color standard" and related "Chinese printing paper color standard" and "Chinese printing color standard" formulation ideas and work routes, and formally established on the basis of the above units. The drafting group of China Offset Ink Color Standards was prepared by Tianjin Dongyang Ink Co., Ltd. as the main drafting unit, and the sample collection and experimental verification of relevant standards drafting work will be carried out from now on. At present, printing and production, China's standardization work is in full swing.
In short, offset printing ink as one of the raw materials for offset printing, to maintain its own advantages a4 printing, while absorbing and learning from foreign advanced experience, through the introduction of advanced technology, equipment, improve China's offset printing ink production, equipment technology level printing industry press To improve the quality grade of offset printing ink, establish the color standardization of ink products, and strive for the rapid development of China's ink industry.