The most popular green ink in China is not optimis

2022-07-31
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The current situation of green ink in China is not optimistic

ink is an indispensable basic material for printing, and it is also one of the largest pollution sources in the printing industry. Today, when calling for the development of low-carbon economy and the promotion of green printing, the production and use of green ink is increasingly becoming the consensus of the ink industry and the printing industry

current situation: environmental friendly ink started late

compared with developed countries and regions such as Europe, America and Japan, the production and use of environmental friendly ink in China started late

due to the large amount of benzene based solvents used in traditional solvent based inks, European and American countries have gradually replaced the traditional solvent based inks with water-based inks since 2000. Japan also issued relevant environmental protection ink standards in 2002 and banned the application of benzene containing inks in the packaging of food, drugs and women's and children's products. Yang Hong, former director of the national ink information center, once wrote that these countries and regions have not only formulated strict production and use standards for environmental friendly inks, but also implemented very strict supervision and testing to occupy about 1/3 of the market share of lithium battery copper foil for power batteries

in China, environmental friendly inks were produced only in 2005, and relevant standards were issued only in 2007. In 2007, the recommended national environmental protection standards "offset printing ink for technical requirements of environmental signs" and "gravure printing ink and flexographic printing ink for technical requirements of environmental signs" were issued successively, which set requirements for the residues and use of heavy metals, volatile organic compounds, benzene solvents, etc. in the ink; The food safety law implemented on june1,2009 has included food packaging materials and containers into the category of food safety, and benzene solvents in the mandatory national standard health standard for the use of additives for food containers and packaging materials have not been included; According to the recommended national standard plastic composite film for packaging, bag dry compounding and extrusion compounding implemented on august1,2009, benzene solvent residues are not detected. Further improve the market competitiveness

the use of environmental friendly ink in printing and packaging enterprises is not optimistic. Yangweimin of Hebei Shijiazhuang Weimin plastic flexible packaging technology expansion alliance believes that the solvent-based ink containing benzene is still the most widely used in China, and the benzene free and ketone free environmental friendly ink is still in an embarrassing situation that is difficult to promote

however, this situation is changing. Fanjiaju, President of New Oriental ink Co., Ltd., said that China's environmental friendly ink production has gone through the process of technological upgrading from benzene free ketone to benzene free ketone to alcohol water. At present, 50% of enterprises in the domestic ink industry are producing environmental friendly ink. It is believed that within one to two years, the entire ink industry will complete the transformation to the production of environmentally friendly ink. In addition, the large-scale flexible packaging manufacturers represented by Master Kong, Wangwang, Wahaha and Nestle have turned to benzene free composite ink since this year

problem: popularization faces three bottlenecks

insiders believe that environmental friendly inks are not popularized in China due to the following three reasons

first, there is a lack of clear support of relevant regulations and standards

the current laws and regulations in China do not expressly prohibit the production and use of solvent-based inks containing benzene, nor do they apply the identification mark of benzene free and ketone free inks

in terms of standards, yangweimin pointed out that although China issued the national standard for plastic composite packaging film in 1998, a specific index limiting benzene residue was added in 2003, which should not exceed 3mg per square meter. However, it is regrettable that this standard is only a recommended standard, not a national mandatory standard, and has not been effectively implemented in practice. After reviewing the standards mentioned above, this newspaper also found that only one national standard is mandatory, while others are recommended

second, the performance of green ink on the market is not perfect

China's ink industry has grown from 22 30 years ago to more than 4700 today. How many environmentally friendly inks are there in the real sense? Hexianwei, chairman of Zhejiang Yiwu Weihang Ink Co., Ltd., quoted Liu Jiaju, an old expert in the ink industry, as saying at the Forum: at present, many people who research and develop environmental friendly ink hastily provide fatigue testing machines for packaging and printing users. The biggest problem in the measurement process is to select the ink with imperfect defects, either poor adhesion or poor gloss; Either the film-forming drying is slow or the price is high; Either overprint is poor, or drying facilities need to be added. Yangweimin said that although some environmentally friendly inks are more safe and environmentally friendly, their colors are not as bright as those containing benzene, so they are difficult to be accepted by the market

third, environmental friendly ink increases the cost of enterprises, making it difficult to popularize

the blind investment and disorderly competition in the printing industry over the years have made the current production capacity of printing enterprises far greater than the social demand. Yangweimin believes that this has led most enterprises to form the wrong concept of emphasizing cost over quality. However, the price of environmentally friendly ink is relatively expensive and printing enterprises are not used to it, which has virtually increased the production cost of enterprises, so it is difficult to popularize it

countermeasures: upstream and downstream work together to promote

how to carry out green printing and promote environmental friendly inks when the global call for low-carbon environmental protection and food packaging safety is deeply rooted in the hearts of the people? Experts from the printing and packaging industry expressed their views on the forum

first, eliminate the production of non environmental friendly inks from the source

dongjinshi, executive vice president and Secretary General of the International Food Packaging Association, believes that in order to eliminate the production of non environmental friendly ink from the source, ink enterprises should do the following: do not use illegal raw materials in the production process, produce in strict accordance with the process requirements, and mark the added substances, scope of use and maximum amount of use in the product description, especially the ink products used for food packaging materials

second, popularize gravure ink and printing knowledge and improve the level of application technology

yangweimin believes that the quality of gravure printing machines in China is uneven. Due to the absence of national product production standards, except for a few imported machines, many gravure printing machines have unreasonable design and nonstandard production, which makes the product effects printed by the same ink on different printing machines very different. In addition, the production and application technology of plastic flexible packaging in China is still at the stage of perceptual knowledge, and there is no theory that can be used for reference. Most printing machine operators are self-taught in equipment operation, which leads to different printing effects of the same kind of ink in different teams. Therefore, in order to vigorously promote environmental friendly inks and with the continuous improvement of hardness, strength and tensile properties of engineering plastics, we should strengthen the training of gravure printing technology and inking knowledge

third, strengthen technical exchanges through industry associations and create identification marks for environmental friendly inks

yangweimin proposed to create the identification mark of environmental friendly ink, and hold technical exchange activities from time to time through industry associations. Dongjinshi believes that printing enterprises should add the migration limit of specified substances to the food packaging instructions, and specify the detection method for the migration limit in the product standards

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