Printing knowledge

Trend analysis of green materials

Recently, the national textbook "green printing" as the primary measures for promoting the development of green printing and has its special significance. Material objects for elementary and middle school students, teaching materials as a tool for learning, can be said to be what they had contact every day. At present, due to overall industry levels and people's safety, environmental awareness is not strong, and printing of teaching materials there are a lot of problems.
question one: "ink" and "ink"
ink containing spread of toxic chemicals in the air, so that the ink issue that people say "ink". For textbook printing inks often contain ethanol, isopropanol, butanol, propanol, methyl ethyl ketone, ethyl acetate esters, volatile organic solvents such as toluene, xylene, which constantly volatile organic solvents in the printing process, and emit toxic, irritant smell more benzene material. Ink drying most of the solvents will be eliminated, but there will still be some residue, students read for a long time this type of ink printed on the book, inhaling the gas affects the brain central nervous system, pose a threat to health.
horror and not only that, the books used in printing inks, pigment fine particles, strong adsorption capacity, which contains heavy metals such as lead, chromium, cadmium, mercury, have some toxicity. Their emissions will not only cause damage to the natural environment and may lead to chronic poisoning, or through the blood to the brain, causing brain damage. According to the research, developing youth's degree of absorption in lead is several times higher than in adults, lead poisoning intelligence have a greater influence on young people. Ink, containing the ink and the body of heavy metals, especially students and children in close contact, the consequences would be unthinkable.
problem two: "packaging" General textbook post-press binding of EVA hot-melt Adhesive and solvent film coating technology also contains volatile organic solvents, smell of solvent emitted is typically a carcinogen, harmful to students ' health and also damaged the environment.
in addition, the materials used in the production of paper that you want to add a large number of agents, whitening, fluorescence, greatly improving the whiteness of the paper, read for a long time can cause vision fatigue, especially primary and middle school students reading vision will fall quickly, and adding additives before discharge of wastewater also caused great impact on the environment. In order to prevent pollution, protect the health and safety of students, Green materials come into being.
policy support for Green materials in order to accelerate the process of green printing to promote, at the beginning of June 2010, Yan Xiaohong, Deputy Director of the press and publication Department convened about publishing and printing units this fall teaching materials using eco-friendly materials for the printing of pilot work, and indicates that this work by the Department's Print Management Division is in charge, Office of the printing technology Association of China Green promotion management cooperate fully.
elementary and middle schools textbook green printing printed pilot work in the, Beijing Normal University Press, and people education press, and people art press, and people music press, and education science press, and Shanghai education press and Shanghai language education press 7 home published units, Beijing beauty pass printing limited, and people education press printing factory, and Beijing capital printing works limited, and Xinhua printing factory, and Xinhua color printing works limited, and Kam wish printing works limited, and joint Cheung printing works limited, and Chengdu high district longjiang printing factory Logistics, linyi, Shandong Xinhua printing group, Shanghai Zhonghua printing co, commercial press Shanghai printing screen printing factory and more than more than 10 printing companies as well as Tianjin Toyo ink, Ltd, Hangzhou Toka ink Chemical Co, Wuxi Wanli adhesion materials co, Henkel (China) investments limited the production of environmentally friendly raw materials and other related products unit took part in the pilot project.
in September 2010, the press and publication administration and the People's Republic of China Ministry of environmental protection (hereinafter referred to as the Ministry of environmental protection) sign strategic cooperation agreement on the implementation of green printing, two areas of China printing technology association and environmental development specific Green printing implementation forward. And pointed out in the bulletin on green printing "from 2012 to 2013, in the printing industry-wide framework for building green printing. Formulated and published Green printing standards, gradually in areas such as paper tickets, food and drug packaging and green printing demonstration enterprise of green printing, green printing related support policies soon; green printing full coverage of basic primary and secondary school textbooks, accelerating the Green printing government procurement. "According to understand, since March 2, 2011 Environmental Protection Department issued implementation first printing national environmental standard environment logo products technology requirements Hou, first green printing certification work with of official expand, as March 2011 end of, the province (district, and city) reported to intends participate in green printing certification of enterprise total 319 home, which more than 60 more than enterprise submitted has certification information, more than 20 more than enterprise has accept has site certification check.
the Green printing printing Green primary and middle school textbooks as the breakthrough point, Cao Hong, Deputy Director of the General Administration of press and publication of Print Management Division said, popularization of green printing starts from the primary and secondary school textbooks, will gradually be extended to government procurement of printing, food and pharmaceutical packaging and printing field. This year, GAPP pilot in the 7 Publishing House, printed 100 kinds of teaching materials using environmentally friendly inks, glue, a total of 1500duowance, involving more than 20 provinces, municipalities and autonomous regions. You want to achieve in 3 years of primary and secondary materials green printing, green printing within 5 years to complete a full publication.
materials for Green materials green textbook "green" mainly reflected on the materials used. In terms of ink, obtained environmental certification mark is used in offset printing ink printed on the back cover coating materials, uses more environmentally friendly coating, water laminating or UV glazing; adhesives used hot melt adhesives with high security; in terms of paper, there are some publishers selected by straw production color printing.
1. ink ink is one of the largest sources of the printing industry. Traditional offset printing ink is usually used of petroleum solvent containing heavy metals, volatile organic compounds and aromatic hydrocarbons and other toxic and hazardous chemicals. The Beijing 5 textbooks used by the Publishing House of the Green printing test is to obtain environmental certification mark of offset inks, are aromatic-free soy ink, from Tianjin Toyo ink, Ltd and Hangzhou Toka ink chemical company green ink production suppliers. The ink suppliers are offset inks, gravure inks and flexo ink editing units of the relevant national environmental standards.
"little green ink used mineral oil, vegetable oil, which not only reduce the use of petroleum solvent, reduce environmental pollution, reduce health risks for operators and consumers. "Chief Engineer of Gong zhangshui Hangzhou Toka ink chemical company said.
test materials using environmentally friendly inks soybean oil renewable resources as the carrier, some alternative resource depletion of petroleum solvent, because oil is solvent in the pages, while vegetable oil is safe. Tianjin Toyo ink, Ltd technical adviser said Zhou Mei, in environmentally-friendly sheetfed offset ink, for example, certified products must reach more than 20% of vegetable oil content, compared with offset inks, per tonne of product to reduce the use of petroleum solvent of about 100 kg. Promote green printing of teaching materials such as the whole country, can dramatically reduce the use of petroleum solvent. Also, due to the content of vegetable oils, inks of VOC (volatile organic compound) content, drying in the printing process will reduce VOC emissions by about 10%.
in addition, environmentally-friendly soy ink used aromatic-free solvents. Gong zhangshui says: "general printing ink solvents used in aromatic hydrocarbon content of 10%~20%, green ink uses no aromatic solvents, aromatic contents in solvent is less than 1%. "Compared to aromatic solvents and solvent-free, odor small, skin irritation decreases and therefore the solvent is less dangerous to human health. Also, due to solvent good biodegradability, and pollution of the Earth decreases, is on the Earth's environment friendly solvents.
2. printing cover coating technology experts, to achieve green printing, in the most critical link in ink pollution problems to be solved, while in India link, the key is to solve the lamination process cause pollution problems. In this pilot project of green materials, reporters learned that publishing houses and printing using 3 more environmentally friendly coating or glazing process, respectively, precoated, water laminating or UV light.
film is in the printing and packaging film on the surface, whose role is to make print more beautiful, strong, and durable, in primary and secondary school textbooks in use on the cover. Beijing Kangde, Chairman new composite Zhong Yu, told reporters over the years, China has been using solvent based coating technology coating, but it uses benzene solvent, easily lead to operator suffering from leukemia, blood cancer, infertility and other serious diseases, workshop is also vulnerable to electrostatic burst fire of thin film materials, resin coated paper and film materials are difficult to recycle. According to statistics, solvent printing packaging film market in China that still account for about 68% of the coated film.
at present, the water already on the market that is coating and coating, two more environmentally friendly coating technology which coating is the most environmentally friendly. Precoated through special equipment, hot-melt glue or cold resin substrate and thin film composite of a pollution-free, strong viscosity of printing and packaging materials. Advantages: does not contain any pollutants, high speed production, beautifully printed, drying, low energy consumption.
according to Zhong Yu introduced, national 60%~70% of primary and secondary school textbooks have been used for coating technology, Beijing's primary and middle school textbooks have used 5 years ago precoated comprehensive alternative to solvent-coated membrane, so that primary and secondary school textbooks in the field of printing your publication ahead. However, on the domestic film market as a whole, the environmental technology market share of only 10%. And the United States since 1996, total elimination of solvent-based coating, 95% use of coating technology, 3% water laminating, and 2% using UV glazing technology. European coating technology for 65% use and 35% for waterborne adhesive film and UV light. Obviously, our country printed after the comprehensive promotion of environmental technology is behind the United States for 15 years.
Zhong Yu said: "promoting precoated comprehensive alternative is the key to achieve green printing initiatives. The press and publication administration signed a strategic cooperation agreement with the Ministry of education, Ministry of environmental protection, will speed up the promotion of the film, precoated comprehensive alternative era is coming. "He expects over the next 3 years ~5 years after our country will be able to complete printing lamination film technology and comprehensive alternative.
in addition to pre-coating process, some printing house also was used in a textbook cover water laminating or coating to UV light. Water laminating contain less harmful solvents, but also easy to recycle. Technology from the film to prepress covers after glazing, can basically meet the requirements of wear resistance of materials. And, because varnish with UV-curing factor, can be cured by UV light for a few seconds after, improve the efficiency of the glazing technology of printing.
3. glue on green textbook pilot project, Ltd and Wuxi Wanli adhesion materials Henkel (China) Investment Ltd offers different types of EVA (ethylene vinyl acetate copolymer) hot melt adhesive. Zhou Qiping said in an interview, General Manager of the company, compared with the standard plastic, the company provided the gum in control of volatile agents and antioxidants have great improvements and other harmful substances. Henkel (China) Investment Corporation Sales Manager Zhang said China, the company offers gum and glue viscosity increasing agent, containing less harmful substances such as additives, in full compliance with environmental standards.
in the book binding in China, wireless glue binding adhesive pages in book binder is mainly used by EVA hot-melt adhesive. It is understood that the regulation of EVA hot melt Adhesive liquid, penetration, softening point and anti-oxidizing and reducing costs in its production process also added resin, thickening agent, a viscosity adjusting agent, plasticizer, antioxidant, filler material, composed of a proper ratio. In this process, add antioxidants and resin components are not the same, safety of EVA hot-melt Adhesive and volatility is different.
it is understood that the two companies in the print materials has a wealth of experience in the field of environmental protection, for years in strict accordance with the environmental standards in Europe and other international standards to control the content of harmful substances. For example, according to Zhou Qiping introduced, they used the environmental protection standard SGS certification, RoHS standards. Zhang said that they perform the standard EN741, ASGN, RoHS, Henkel (China) investment company also set up a special environmental security research organization, strict control of the production process.
in fact, in all kinds of binding glue, the most environmentally-friendly hot-melt PUR hot melt adhesive. Its mainly for the non-plant Rosin and a very small amount of oil, melt all sealing device is used when there is no gas, pollution of the environment. However, due to current high cost of PUR hot melt Adhesive, and users need to process improvement of binding equipment, so this pilot project did not use more environmentally friendly-PUR hot melt adhesive. Both companies said that the PUR hot melt adhesive is more to promote environmentally-friendly hot melt adhesive.
4. appearance rough paper recycled paper, no pilot unit by Beijing. Pilot unit in Beijing expect the inclusion of green paper green printing account.
Ecru paper this year is as the Shanghai World Expo licensed paper and known to the world, Shanghai in autumn color selected when the teaching materials for eco-test paper. Ecru paper has the advantage of eyecare and the protection of the environment. This kind of paper with straw as raw material, do not add bleach and fluorescent agents in the production process, its color is pale yellow, with its production of print reading for a long time does not cause eye strain.
Green textbook price people's fine arts Publishing House, people's music publishing house the pilot production of green materials last year, didn't do Green materials this year, officials said they also hope to do Green materials, the more "green" as possible, but the cost is an unsolved problem, they are helpless.
Jiangsu Provincial Bureau of press and publication in print management office, Qian Wei said: "we have issued a document implementation of the three departments of the notification of the spirit, but green print how do increase the cost of the solution, we want the country to have the corresponding supporting policies. Jiangsu 30% Green printing of teaching materials is large, so much variety, the number of copies, increased cost and who will pay? Textbook pricing was dead, Sin no increase, it is printing money to print. "
people education press textbook Center published Department Deputy Director Guo Xu in accept reporter Shi interview said, in environmental and profit maximize also became Enterprise most important of pursuit target premise Xia, for environmental and increased of cost by who to pay and to what form implementation to specific production in the is key where, only solution has this problem, to makes green printing real get promotion green printing will increased how many cost? It is understood that the 2010 National Green printing of primary and secondary school textbooks in the fall when the pilot, increasing the cost of Green by the publishing house, printing plant, material suppliers through tripartite commitment. Pilot printed textbooks but 14 million copies, according to the statistics of the 2010 national press, 2010 primary school textbooks (including high school textbooks) print runs to more than 2.7 billion copies, total price of nearly 17.9 billion yuan. Without an accurate measure, but people in the industry said in an interview, green printing to increase mainly reflected the cost of using environmentally friendly inks, adhesives and other raw materials, and will generally increase the cost of 10%~20%, another green certification services and so on. 2010 primary school textbooks nearly 17.9 billion yuan in the total price as the base, calculated according to the growth 10% of green printing costs, costs of nearly 1.8 billion yuan a year, 30% "turning green" is increasing the cost of 600 million Yuan.
to address the high cost of green printing problems, first of all, you need to reduce energy consumption and find cheap, quality guarantee printed materials and, secondly, early in the development process, the research and development costs consume a larger proportion, as the technology matures, more and more companies entering the field, costs will be reduced.
in addition, the press and publication administration and the Environmental Protection Department will work with the relevant departments and regions to introduce green printing support policies to encourage enterprises, research institutes and universities and set up new mode of combination of green printing, green printing access to reward outstanding achievements of departments and enterprises, the introduction of supportive policies, will undoubtedly promote green printing processes.
trends for Green materials under the press and publications administration arrangements, implementation of the teaching materials of green printing includes the pilot, requirements published in the printed materials using environmental label certification process of paper products, printing ink, as well as environment-friendly raw materials such as adhesives, using flexographic printing materials, and so on. Pilot work from three aspects, one is in the choice of paper products, international sustainable forest certification are recommended for publishing house paper products. Is in the process of printing, require the use of environmentally friendly printing inks, inks with Chinese environmental label certification products. Third after the printing process, ask publishers belong adhesive printing of teaching materials with reference to the State environmental protection standards.
engaged in years of printing quality test print quality printing Association of Beijing, Secretary-General of Beijing Association Secretary-General Chang Ching-Hsieh analysis: existing textbook printing process, usually four-colour offset printing, misregister is now very rare. In addition, to examine whether the Green printing, certification requirements, select environmentally friendly adhesives, eco-friendly printing ink coated products, pollution-free and environmentally-friendly printing raw materials such as cleaning fluid. Requirements for green printing, printing plant, help to raise the level of textbooks printed. Corporate green standard has now become an important examination textbooks printed quality standard of uniform type for easy green printing control.
press and publication highlighting green issues printed teaching materials, textbook printing Green is an inevitable trend of the future, also called for textbook printing enterprise must have it by green printing certification "appointment" qualification. Therefore, the publishing house printed materials will be selected in the select print factory actively certified by green printing companies to print in order to guarantee the quality of printing of teaching materials. It is understood that Shanghai's implementation of the primary and middle school textbook printed using the flexographic printing, flexographic printing greatly reduces pollution. But it also requires venture into textbooks printed by flexo printing enterprises pay attention to books printed after the link. Because flexo printing is typically used for label printing, post-press finishing equipment and books printed after the equipment is very different, you need to introduce horseback nails and plastic nail equipment to adapt materials printing and finishing needs. Due to Green materials produced are specific issues in the trial stage, there is still a problem for enterprises to promote green printing. For example, green ink printing materials, adhesives, paper and other products are much higher than the average market price, while the national price of textbooks is qualified, so that businesses will increase. In this interview, also confessed in the industry: environmental benefit for the benefit of students, is certainly a good thing, but also the future development direction of publishing and printing. As of right now, how to seek a balance between environmental protection investment and material costs, related to this good development, relevant publishing house in the pilot talked about views on printing costs.
green print technology compared to traditional printing and higher costs are inevitable. First of all printed materials to environmental performance in line with the environmental requirements of raw materials replace traditional raw materials, costs will be increased. Secondly, obsolete printing equipment and technology updates also need capital investment. Printing problem topic has long been a commonplace in the industry, the publishing house paid to the printing company of sin depending on book pricing. Textbook pricing, however, since 2001 the national primary and secondary school textbooks since the price limit, and in 2006 made an adjustment has not been other adjustments, and price are on the rise, was caught by Green materials.
Green printing needed money, publishing and printing companies to long-term commitment. Adjust the primary and middle school textbook pricing or publishing or printing company appropriate special subsidies to diffuse a situation, but this requires national plan be addressed from national environmental funds. The good news is that, GAPP fall 2010 primary and secondary school textbooks use eco-friendly materials are printed after the pilot, the costs associated with data collection and research. So currently parties also are recommends by news published Department led press, and printing factory, and material suppliers, Shang downstream all link with is a pen account, green printed Hou, cost rose has how many, and zhiqian compared post has how many, sin the how adjustment, how sharing rose of cost? calls for national whether can consider give textbook printing enterprise must of subsidies, industry chain common coordination reduced cost.
while traditional print in our country is still the mainstay, but there are new technologies such as digital printing continues to emerge, we have reason to believe that as government departments attach great importance to, the active participation of all sectors of the industry chain, support and cooperation with all 3 years in primary and secondary school students in promoting the use of environmentally friendly materials will not dream.
Although China has begun teaching materials of green printing works, but there are many obstacles put in front of people, how can the Green printing work smoothly, it also needed more printing people give their sweat and wisdom. Green materials and printing work is necessary, as long as we have a firm belief, then green textbook printing will lead to success.
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