Attention should be paid to the printing ink quali

Attention should be paid to the printing ink quality of newspapers

recently, consumers often report the printing quality of newspapers, thinking that some newspapers use inferior printing ink. After reading the newspapers, their hands are covered with black and have a choking smell, requiring supervision and inspection of the quality of printing ink

after pressing the function with printing and storing the set key, the brush industry has developed rapidly, and the impact of ink on human health has attracted people's attention. Reading newspapers with poor printing quality, wrapping food with waste newspapers, and eating while reading newspapers, all these trivial things that often happen around, may make people victims of ink pollution. Ethanol, isopropanol, butanol, propanol, butanone, ethyl acetate, butyl acetate, toluene, xylene and other organic solvents are often used in printing inks to greatly improve the transmission efficiency. Although most of these organic solvents will volatilize after drying, the residue will still cause harm to human body. In particular, printing materials with large inking area and thick ink layer have more residual solvents, and the toxic substances released during use will pollute the air and endanger people's health. A big problem of ink pollution is pigment. These pigment particles are very small and have strong adsorption capacity. They contain heavy metal elements such as lead, chromium, cadmium and mercury, which are toxic to a certain extent. Take lead as an example. A page of color newspapers and periodicals contains about 2000 micrograms of lead. Lead is the only trace element that the human body does not need. It is stable, non degradable and hinders the formation of blood cells. When the lead in the human body saves the experimental data; When accumulated to a certain extent, there will be chronic poisoning symptoms such as mental disorders, nightmares, insomnia, headache, etc. in severe cases, fatigue, loss of appetite, nausea, abdominal distension, abdominal pain, diarrhea, etc. Lead can also enter brain tissue through blood, causing brain damage. According to research, children's absorption of lead is several times higher than that of adults, and lead poisoning has a great impact on children's intelligence. In addition, when printing, a large number of diluents containing benzene are used, which are toxic and irritating, and are easy to pollute the air during use. 7. Regular inspection will affect the central nervous system of the brain and cause great harm to human health. It can be seen that the quality of ink is very important to the majority of consumers, but it is understood that the current quality of newspapers is only about the national standards of printing technology, and for the lack of quality standards of ink, it is suggested to strengthen the quality supervision of ink