How much is the application of plant ink?
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Plant inks are not like non-renewable resources like petroleum inks. For example, soybean oil contains a rich resource of sustainable regeneration and biodegradability. It can continuously supply raw materials for ink production and has good environmental protection. The use of vegetable oils (such as soybean oil) to replace some petroleum-based mineral oils to produce inks can promote the industrial use of vegetable oils and fats in various countries, expand the application range of vegetable oils, and at the same time reduce the consumption and import of non-renewable petroleum, and save foreign exchange. A plan to count on.
Main types of soy ink
Because different printing methods and substrates need to use different formulas of soy ink, it is as if the gasoline can not be applied to diesel engine vehicles. Therefore, soy inks must also be developed in a variety of formulations for different printing situations. At present, there are mainly the following: 1 newspaper ink: newspaper printing by roll printing, which is an absorption reaction, so that the oil in the ink is absorbed by the paper and the color is printed on the surface of the paper to complete the printing. Such newspaper inks have a higher oil content (soybean oil), while typically black inks contain at least 40% oil and color inks at least 30%. 2 sheet-fed ink: This ink contains more resin components, and vegetable oil is at least 20%. 3 thermosetting ink: low oil content, at least 7%. 4 cold solid ink: oil content of at least 30%. 5 commercial form printing ink: oil content of at least 20%. 6 Relief ink: This water-based or solvent-based ink does not contain vegetable oils such as soybean oil, but contains vegetable proteins (such as soy protein), which can be attached to paper to complete printing. Usually the protein content is from 15% to 20%.
The rise of plant inks originated from the global oil crisis that occurred in 1979. As oil prices soared and spread to related industries, including printing, oil supply brought some problems, especially the ink industry. Be sensitive. In order to alleviate the impact of the oil crisis on the printing industry, avoid the impact of production due to the supply of raw materials.
The head of the American Newspaper Printers Association (now the American Newspaper Association) advocates the development of printing inks that replace petroleum substrates. After years of research on various vegetable oil formulations, soybean inks are non-toxic and non-polluting, and are used for cooking. The soybean oil is abundant in production, cheap, safe and reliable, and has good printing effect and meets various standard specifications of printing inks, especially environmental protection performance.