8 knowledge points about green printing for you to check
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What is green printing?
Green printing refers to printing methods that use environmentally-friendly materials and processes, produce less pollution during the printing process, save resources and energy, are easy to recycle and recycle after the printed matter is discarded, can be naturally degraded, and have little impact on the ecological environment. Green printing requirements are coordinated 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, recycling, etc. The cycle should meet environmental requirements.
What are the characteristics of green printing?
Decrease and moderate, non-toxic and harmless, non-polluting and pollution-free are the three main features of green printing. Reduction and moderation refers to the moderate printing of green printing under the conditions of information recognition, protection, convenience, sales, etc., with the least amount and the most simplified process; 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; non-polluting and pollution-free means that the environment should not pollute or cause pollution during the whole life cycle of printed products, that is, from raw material collection, material processing, manufacturing products, products. The use, waste recycling and recycling, until the final processing of the entire process should not cause pollution to the human body and the environment.
What are the requirements for raw and auxiliary materials?
· Green printing requirements for varnish are water-based or light-curing varnish.
· Green printing requirements for dusting are plant dusting.
· Green printing is required for the application of film-coated adhesives as water-based film adhesives.
· Green printing requires no phthalate esters to be added to inks, varnishes, blankets or adhesives.
· Green printing should meet the GB/T24999 standard for whitening of paper; green printing should meet the GB/T18359 standard for paper whitening requirements for primary and secondary school textbooks.
· The limit of cyclohexanone in the limit of harmful substances in green printing products is ≤1.0mg/m2.
· Green printing imposes limited requirements on 24 toxic and hazardous substances contained in printed matter: mainly including 8 soluble elements and 16 volatile organic compounds remaining on the printed matter.
• The amount of alcohol added to the dampening solution used in the printing production activities should be ≤ 5%.
· In the limit of harmful substances in lithographic products, xylene ≤ 0.25mg/m2 is required.
·Recycled paper is made from waste paper as raw material, which is crushed, decolorized and pulped, and then processed through various complicated processes.
What is the meaning of green printing?
The purpose of green printing includes two core connotations of “environmentally friendly” and “healthy and beneficial”, emphasizing the consideration of the survival of the next generation while taking into account contemporary people. The recent interests of enterprises are combined with the long-term interests of the country, and environmental benefits and economic benefits are in line with each other to achieve a win-win situation for environmental protection and market economy. Green printing not only reflects the concept of sustainable development, people-oriented, advanced technology, but also an important means to achieve energy-saving emission reduction and low-carbon economy. The green printing industry chain mainly includes green printing materials, printing graphic design, green plate making process, green printing process, green postpress processing technology, environmentally friendly printing equipment, and printing waste recycling and recycling. Through the implementation of green printing, the entire supply chain system including printing materials, processing, application and consumption can be put into a virtuous cycle.
What is green printing certification?
Green printing certification is an important way to implement green printing. Green printing certification is carried out on a voluntary, open, fair and just basis for the company. Carrying out green printing certification is an important means and means for the country to implement green printing. This is also an international practice.
The green environment logo graphic consists of green hills, green water, the sun and the surrounding 10 rings. The requirements for green printing environmental labeling product certification are: quality meets the standard, and “three wastes” emissions meet national or local emission standards (“three wastes” in the test report refers to: wastewater, waste gas, noise). The printing company's green printing environmental labeling product certification marks that the company has reached the advanced level of environmental standards currently implemented by the state in terms of environmental protection, and is a producer of printing products that is worthy of social and government trust. Products with environmental labeling indicate that the product is not only qualified, but also meets specific environmental protection requirements during production, use and disposal. Compared with similar products, it has the advantages of low toxicity, less harm and resource saving.
How do Indian companies achieve green printing?
The realization of green printing can be achieved by selecting more environmentally friendly materials, saving energy, reducing emissions, and making products healthier. Use environmentally-friendly paper, including sustainable forest certification paper (protection of nature), natural paper (good for vision), recycled paper (recycling), environmentally friendly ink, glue; energy saving in production process, reducing emissions means saving electricity in printing production Water saving, waste heat recovery, professional treatment of pollutants; 24 environmental testing indicators of green printed books should conform to the national standard HJ2503-2011, and have advanced nature to ensure human health.
How to win the battle against VOCs emissions?
VOCs are volatile organic compounds that are common atmospheric pollutants in the printing industry. How to reduce emissions of VOCs? Printing companies can start with the following: the printing shop uses non-volatile or low-volatility and high-boiling detergents to replace gasoline, which is used to clean plates and blankets, which can reduce VOCs emissions. The centralized ink supply system can not only reduce VOCs emissions. It can reduce the potential waste caused by manual ink refilling; coating with pre-coated film can eliminate the use of thinner, no pollutants, and greatly reduce the release of VOCs; the biggest difference between water-based ink and solvent-based ink is its use. The solvent is water rather than organic solvent, and water-based inks can significantly reduce VOCs emissions.
Current VOCs treatment technologies mainly include combustion treatment technology, membrane separation technology, condensation emission, biological treatment technology, absorption technology (adsorption technology) plasma technology, and photocatalytic degradation.
The origin of the green printing publicity week?
On October 8, 2011, the former State Press and Publication Administration and the Ministry of Environmental Protection issued the "Announcement on the Implementation of Green Printing", and decided that the first week of November is the Green Printing Promotion Week. The theme of the publicity week is "the spirit of publicity announcement." "Showing the latest achievements and accelerating the pace" is an important platform for promoting green printing concepts and displaying green printing results in the printing industry. It has been successfully held for six times.
The 7th Green Printing Promotion Week is scheduled for November 27th - December 1st, 2017. The 2017 National Green Printing Promotion Conference, the 2nd China Publishing and Printing Conference, the 2017 Beijing Green Printing Industry Promotion Business Exchange Conference and the Beijing-Tianjin-Hebei Green Printing Industry Promotion Business Exchange Conference were held during the Green Printing Promotion Week.