Newspaper printing ink quality should attract attention

In the recent past, consumers often report the quality of printed newspapers. They believe that some newspapers use poor-quality inks. After reading the newspapers, they are covered with black and have a stench of smell and require supervision and inspection of the quality of the ink.

With the rapid development of the printing industry, the impact of ink on human health has attracted attention. Looking at newspapers with low print quality, wrapping food with old newspapers, and eating while reading newspapers and newspapers, these small things that often happen around us can all cause people to become victims of ink pollution. Ethanol, isopropyl alcohol, butanol, propanol, butanone, ethyl acetate, butyl acetate, toluene, xylene and other organic solvents are often used in printing inks. Although most of these organic solvents will be volatile after drying, the residual parts will still cause harm to the human body. In particular, printed materials with larger ink areas and thicker ink layers have more residual solvents. Toxic substances released during use will pollute the air and endanger people's health. A major problem with ink contamination is pigments. These pigment particles are very small and have a strong adsorption capacity. They contain heavy metals such as lead, chromium, cadmium, and mercury, all of which have certain toxicity. Taking lead as an example, a page of colored newspapers contains about 2000 micrograms of lead. Lead is the only trace element that the body does not need. It is stable, non-degradable, and hinders the formation of blood cells. When the accumulation of lead in the body reaches a certain level, there will be chronic poisoning symptoms such as mental disorders, nightmares, insomnia, and headaches, and severe cases of fatigue, loss of appetite, nausea, abdominal distention, abdominal pain, and diarrhea. Lead can also enter the brain tissue through blood, causing brain damage. According to research, children's absorption of lead is several times higher than that of adults. Lead poison has a greater impact on children’s intelligence. In addition, a large amount of benzene-containing diluent is used for printing, which is toxic, has a pungent odor, and easily pollutes the air during use. Long-term inhalation can 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 of great importance to consumers. However, it is understood that the quality of newspapers currently is only related to national standards for printing technology. For inks lacking quality standards, it is recommended that the quality of ink be supervised.