After 6 years of development, the concept of green has become popular, and green printing has become a consensus and conscious action for the development of the upstream and downstream of the industry chain and the entire industry. From November 27th to December 1st, the annual Green Printing Promotion Week was held. In order to better promote the concept of green printing to readers, this edition selects 8 basic knowledge about green printing, and popularizes green printing knowledge points for readers through the form of question and answer.
1. What is green printing?
Green printing refers to a printing method that uses environmentally friendly materials and processes, produces less pollution during the printing process, saves resources and energy, is easy to recycle and reuse after printing, is naturally degradable, and has little impact on the ecological environment. Green printing requires coordination with the environment, including the use of environmentally friendly printing materials, clean printing production processes, the safety of printed materials to users, and the recycling and recycling of printed materials, that is, the entire life of printed materials from raw material selection, production, use, and recycling The cycle should meet the environmental protection requirements.
2. What are the characteristics of green printing?
Reduction and moderation, non-toxicity and harmlessness, pollution-free and pollution-free are the three main characteristics of green printing. Reduction and moderation refer to the modest printing with the least amount of consumption and the most simplified process under the conditions of information recognition, protection, convenience, sales and other functions of green printing; non-toxic and harmless means that the printed materials should not contain toxic substances, Or the content of toxic substances should be controlled below the relevant standards; pollution-free and pollution-free means that the entire life cycle of printed products should not cause pollution or cause pollution to the environment, that is, from raw material collection, material processing, manufacturing products, products The whole process of use, waste recovery and regeneration, and the final disposal shall not cause pollution to the human body and the environment.
3. What are the requirements for raw and auxiliary materials?
· The requirement of green printing on varnish is water-based or photo-curing varnish.
· The requirement of green printing for dusting is plant dusting.
· Green printing requires the use of water-based coating adhesives.
· Green printing requires inks, varnishes, blankets, and adhesives not to add 6 kinds of phthalates.
· The brightness of green printing on paper should meet the GB / T24999 standard; the brightness of green printing on the paper used in the textbooks of primary and middle schools should meet the GB / T18359 standard.
· The limit of cyclohexanone in the limit of harmful substances in green printed products is ≤1.0mg / ?.
· Green printing puts forward a limit requirement for 24 kinds of toxic and hazardous substances contained in printed products: mainly including 8 kinds of soluble elements and 16 kinds of volatile organic compounds remaining on the printed products.
· The addition amount of alcohol in fountain solution used in printing production activities should be ≤5%.
· In the limit of harmful substances in lithographic products, xylene ≤0.25mg /? Is required.
Recycled paper is paper produced by using waste paper as a raw material, crushing it, decolorizing and pulping it, and then processing it through various complicated processes.
4. What is the meaning of green printing?
The purpose of green printing includes the two core connotations of "environmentally friendly" and "healthy and beneficial", emphasizing the survival and development of the next generation while taking into account the contemporary. The short-term interests of enterprises are combined with the long-term interests of the country, and the environmental and economic benefits are in line with each other. The goal is to achieve a win-win situation between the environmental protection cause and the market economy. Green printing not only embodies the concept of sustainable development, people-oriented, advanced technological level, but also an important means to achieve energy saving and emission reduction and low-carbon economy. The green printing industry chain mainly includes green printing materials, printed graphic design, green platemaking process, green printing process, green post-press processing process, environmentally friendly printing equipment, and printing waste recycling and regeneration. Through the implementation of green printing, the entire supply chain system, including printed materials, processing, application and consumption, can enter a virtuous cycle.
5. What is green printing certification?
Green printing certification is an important way to implement green printing. Green printing certification is carried out on the principle of voluntary, openness, fairness and justice for enterprises. Carrying out green printing certification is an important means and method for the country to implement green printing, which is also an internationally accepted practice.
The green environment logo is composed of green hills, green water, the sun and the 10 rings around it. The requirements for the certification of green printing environmental label products are: the quality meets the standards, and the "three wastes" discharge meets national or local emission standards (the "three wastes" in the test report refer to: wastewater, exhaust gas, noise). The printing company's green printing environmental label product certification marks that the company has reached the advanced level stipulated by the current national environmental standards in environmental protection. It is a printing product manufacturer worthy of the trust of society and the government. Products with environmental marks indicate that the product is not only of qualified quality, but also meets specific environmental protection requirements during production, use, treatment and disposal. Compared with similar products, it has the advantages of low toxicity and less harm, and resource conservation.
6. How do printing companies achieve green printing?
The realization of green printing can be achieved from three aspects: choosing more environmentally friendly materials, saving energy and reducing emissions in the production process, and making products healthier. Use environmentally friendly paper, including sustainable forest certification paper (protection of nature), natural paper (beneficial vision), recycled paper (recycling), environmentally friendly inks and glue; energy saving in the production process and reduction of emissions refers to saving electricity in printing production Water saving, waste heat recovery, and professional treatment of pollutants; the 24 environmental protection testing indicators of green printed books should comply with the national standard HJ2503-2011, and have the advanced nature of ensuring human health.
7. How to win the tough battle of VOCs emissions?
VOCs refer to volatile organic compounds, which are common atmospheric pollutants in the printing industry. How to reduce VOCs emissions? Printing companies can start from the following: printing workshops use non-volatile or low-volatility and high-boiling point detergents to replace gasoline for cleaning plates and blankets, which can reduce VOCs emissions; centralized ink supply system can not only reduce VOCs emissions , Can also reduce the potential waste caused by manual ink refilling; the use of pre-coated film for laminating can eliminate the use of thinner, does not contain pollutants, greatly reducing the release of VOCs; the biggest difference between water-based inks and solvent-based inks The solvent is water instead of organic solvent, water-based ink can significantly reduce the emission of VOCs.
The current VOCs treatment technology mainly includes combustion treatment technology, membrane separation technology, condensation, biological treatment technology, absorption technology (adsorption technology) plasma technology, photocatalytic degradation, etc.
8. The origin of the green printing promotion week?
On October 8, 2011, the former General Administration of Press and Publication and the Ministry of Environmental Protection issued the "Announcement on the Implementation of Green Printing", deciding that the first week of November each year is the Green Printing Publicity Week. "Show the latest achievements and accelerate the pace" is an important platform for promoting the concept of green printing in the printing industry and displaying the results of green printing. It has been successfully held for 6 sessions so far.
The 7th Green Printing Promotion Week is scheduled from November 27th to December 1st, 2017. In 2017, the National Green Printing Promotion Conference, the Second China Publishers Conference, the 2017 Beijing Green Printing Industry Promotion Business Exchange Conference and the Beijing-Tianjin-Hebei Green Printing Industry Promotion Business Communication Conference and other activities will be held during the Green Printing Promotion Week . 
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