The potential of offset inks
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At the Drupa Printing Expo in 2000, KBA, one of the world's top three offset press manufacturers, launched the Rapida 162a oversized full-size offset press, the German Health and Safety Committee and the European authority for environmental testing. Emission indicators, issued a green printing environmental certificate. In 2003, Shenzhen Huali Packaging installed the first 5+1 Rapida 162a in OCT in OCT, with a neat working environment, exquisite ultra-full-open (1200×1620mm) single-sheet and direct-print micro-wa The industry people who visited the site were impressed by the potential of offset printing technology.
Offset innovation is not only reflected in the green environmental protection of machines. The widespread use of CTP in rotary offset presses, the commercialization of color offset presses, the development and application of offset UV inks and waterless inks have once again aroused the desire of domestic printing and packaging industry to invest in offset presses. Li Renchao, sales manager of North China Region of Shanghai Peony Ink Co., Ltd. said, “The future of the printing and packaging industry is still flexo printing, but offset printing and offset printing inks will keep about 40% of the application ratio for a long time. For example, domestic beer has a period of time. The gravure is prevalent, but due to fierce competition in the industry and frequent revisions, offset printing is still dominated by U-turn."
Shanghai Peony Ink Co., Ltd. (formerly Shanghai Ink Factory) is the largest manufacturer of lithographic offset inks in China, with an annual output of 15,000 tons, firmly occupying 80% of the southern market. It is expected to expand the northern market in 2006. Peony Ink is one of the few large ink manufacturers that do not have foreign capital in China. With the cooperation with Si Kebai before 2000, management technology and quality service can be compared with Hanghua and Toyo. The output is increasing, and the number of employees has dropped from 1,400. 600 people.
1995-2005 is the domestic development of offset printing ink for 10 years, the total amount from 30,000 tons to 120,000 tons, complete range of offset printing, including high-grade offset printing light fast drying ink, cardboard ink, matte paper ink, news rotary ink, Cold-set rotary ink, UV-curable ink, synthetic paper ink, iron ink and new thermoset rotary ink. Manufacturers are located in Shanghai, Tianjin, Hangzhou, Shenzhen and Taiyuan, and most of them are joint ventures. During the “Eleventh Five-Year Plan” period, China's printing and packaging is expected to maintain a growth of 10%. The growth rate of offset printing ink should be 9%. In the future, products should be developed in the direction of multi-color, high-speed, fast-drying, environmental protection, pollution-free and low consumption.
Environmentally friendly offset ink
For a long time, the air quality of the offset shop is difficult for the printer to feel comfortable. Although the stray ink is no longer allowed, the odor released by the solvent-based high-volatility ink is still harmful to human health.
Guo Zong of Yanjing Beer Beijing Shuangyan Color Printing Co., Ltd. said, “Many printing houses used offset printing to print wine labels and turned to flexo printing after technical transformation, including printing factories and social independent printing factories under the brewery. The environmental friendliness of the process is in line with the actual needs of future consumption."
To meet market demand, offset press manufacturers and ink manufacturers are working on green printing for traditional offset printing. Into the Huali packaging closed-type offset printing workshop, the air duct discharges all the volatile gases, the site is clean and tidy, and the air is fresh. General Manager Zhang Xiaojun praised the ability of Gaobao to process the ink.
Environmental protection and pollution-free have become the primary indicators for ink manufacturers to purchase inks. Ink products require ISO14000 environmental system certification. End users also require VOC and solvent residues in printed packaging products. It is clear that environmental awareness is promoting low toxicity and harmless new types. The development of environmental protection ink.
The non-environmental nature of offset inks is mainly manifested in odor, and newspaper ink pollution is the most obvious. The printing workshop generally has a relatively high humidity, and the use of mineral oil as a solvent for the ink is reported, resulting in a strong odor of the ink and solvent, which directly affects the health of the operator.
The common problem is that if the ventilation is increased, the ink will be caused to fly. The weakening of the air volume will increase the odor of the ink. The environmentally-friendly inks produced by the company are poorly permeable, affecting the drying speed and failing to meet the high-speed printing requirements. Newspaper printing inks must ensure the printing effect and environmental performance. The printing industry has high demand for environmentally friendly inks.
Microwatt color offset printing
The display of products through storage and transportation packaging, the promotion of product design concepts and market demand has promoted the rise of offset printing machine direct printing (offset printing) corrugated board technology. Offset four-color printing has traditionally been regarded as the most ideal printing configuration. Corrugated cardboard has been refined and refined, and G-type and N-type have finished the direct printing of offset printing. The existing Roland 700, 900 and KBA-Planeta offset presses can be used to directly print micro corrugated cardboard with no washboard phenomenon or corrugated variants to reduce the strength of the cardboard. The micro-corrugated packaging is printed with offset printing, which has good printing effect, beautiful color and strong color performance. After applying UV varnish, it not only achieves the waterproof effect, but also improves the compressive strength of the packaging. The successful application of offset printing technology has enabled the corrugated box to replace the cardboard box.
Since the advent of micro-corrugated in the 1990s, the market usage rate has been rising. The United States is growing at a rate of 2% per year. The share of Europe in 2004 is estimated to be 12%, and it is mainly based on F-type, G-type and N-type. At present, 30% of the products in the folding carton package can be changed to the micro corrugated box.
China's micro corrugated cardboard has just started, only limited to the production of E-type corrugated. In terms of paper quality and grade, the variety is small and the grade is low, which needs to be vigorously developed. Many domestic printing and packaging manufacturers have imported four-color offset printing machines, which provide the necessary equipment foundation for micro-printing. The total amount of corrugated packaging in the country is 15 billion square meters. If 10% is transferred to microwatts, 3 grams of ink per square meter of offset printing will add 4,500 tons of offset ink demand.
Fast commercial color printing
Due to the rapid development of offset printing machine technology, the medium and small format multi-color offset printing press is entering the domestic commercial color printing market on a large scale. This is the result of the differentiation of commercial packaging printing into differentiation, functionalization and short version. The technology for high-speed large and medium-format multi-color offset printing, such as on-line glazing, UV printing and flip printing, is placed on small and medium-format offset printing machines, making it flexible, fast and technically capable, increasing the added value of printed products and expanding the application field.
The two major changes in the printing market are: the multi-color printing, high quality, small printing volume, short cycle has become the general trend of the whole market; second, packaging and trademark printing, publishing and printing, social business printing, three major entities have invested in the introduction of equipment Accelerate technological transformation, optimize productivity, and take the road of innovative technological innovation products. Some leading-edge printers have begun to use four-color offset printing and online light (or UV offset printing), indicating that the short-run color printing industry has become a major field. Heidelberg has launched the Speedmaster SM52 online glazing and UV offset printing machine. Catering to the new trend of the market, this will undoubtedly bring business opportunities to many small offset ink merchants.