As one of the key industries named in the "Notice on Accelerating the Resolution of the Current Prominent Problems in the Treatment of Volatile Organic Compounds", the printing industry has been under pressure for a while. At this stage, in addition to equipping the traditional printing process with the necessary VOCs collection and processing equipment, the concept of "green printing" is more respected.
June has arrived, and the "final battle" for the basic rectification of VOCs will start at the end of the month. How should relevant industries prepare?

As one of the key industries named in the "Notice on Accelerating the Resolution of the Current Prominent Problems in the Treatment of Volatile Organic Compounds", the pressure on the printing industry has doubled for a while. Recently, Nanjing Ecological Environment released a "One-click Get Printing Industry VOCs Management Inspection Guide", starting from the actual situation in Nanjing, looking at the entire industry ecology, and pointing out many things that enterprises should pay attention to.

The guide mentioned that according to the research on the air pollution emission inventory, solvents are the second largest emission source of VOCs in Nanjing, with a contribution rate of nearly 40%, while the inks, adhesives, coating liquids, fountain solutions , thinners, etc. etc., will cause a large number of VOCs to overflow, resulting in the formation of VOCs pollution.

In fact, by exploring the printing process, we can also find that whether it is lithographic printing, letterpress printing, gravure printing or stencil printing, the VOCs emission links are basically the same, focusing on the use of various solvents, involving ink preparation, printing process In the volatilization, drying stage, compounding process and equipment cleaning, etc.

After analysis, it is found that the VOCs components emitted by the printing industry are still relatively complex, including toluene, ethyl acetate, methyl ethyl ketone, ethanol, etc., and cover the whole process of material storage, transportation and use. In general, the requirements for end-of-end governance of gas-related enterprises in various places are above 80%. Governance is difficult and indicators are still high, which puts forward requirements for the selection of corporate governance processes.

The above guidelines mainly emphasize two aspects:

①Source control, that is, whether low-volatile inks and other raw and auxiliary materials are used;

②Process control, VOCs have volatile characteristics, so it is necessary to pay attention to sealing and sealing in all links from solvent storage to use.

  At this stage, in addition to equipping the traditional printing process with the necessary VOCs collection and processing equipment, the concept of "green printing" is more respected. To put it simply, green printing is to use more environmentally friendly materials and processes to reduce pollution during the printing process, while saving resources and energy, realizing waste recycling, and being naturally degradable, so as to reduce the ecological impact of printing operations. impact is minimized.

As early as 2010, the "Strategic Cooperation Agreement on Implementing Green Printing" was signed, and the implementation of green printing in my country has been officially launched. Subsequently, the "Announcement on the Implementation of Green Printing" and the "Notice on the Implementation of Green Printing in Primary and Secondary School Textbooks" were issued successively, gradually implementing green printing.

In 2018, the National Printing Industry Green Development Promotion Association revealed that the national primary and secondary school textbooks have achieved full coverage of green printing for 4 consecutive years, and the pass rate of environmental quality sampling is 100%. The relevant person in charge said at the meeting that the scale of the green printing market continues to expand, the scope of green printing has expanded from textbooks in compulsory education to high school, university textbooks and some teaching auxiliary materials, and the scope of green printing of children's books has expanded rapidly.

In short, starting from the source and promoting green printing is one of the most feasible measures to achieve VOCs emission reduction for the printing industry.

Original title: Primary and secondary school textbooks have achieved green printing for 4 consecutive years, and the printing industry VOCs emission reduction is focused on this "road"

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