20 17127 October, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference, and printed ink was included in the list of three types of carcinogens.

PAH (Polycyclic Aromatic Hydrocarbons) contained in traditional ink composition is a volatile solvent printing film, which is harmful to human body. The volatile organic compounds contained in it not only increase air pollution, but also cause harm to human body.

Offset printing soybean ink uses soybean environmental protection material to replace part of petroleum solvent, which can reduce environmental pollution and harm to human body. However, the application in China is still quite few, and the environmentally friendly offset printing ink is mainly non-aromatic soybean ink.

Extended data:

Small knowledge of ink pollution

The chief culprit of ink pollution mainly comes from the solvent it contains. Solvent plays an "intermediary" role in ink to bond pigments and adhesives to printed articles. The working principle is as follows: firstly, the pigment and solvent are mixed, dissolved into a flowable liquid, and the liquid solvent volatilizes to become a solid, thus realizing the transfer and attachment of the pigment to the printed matter.

Volatility of solvents is an important source of pollution, which not only pollutes the air, but also harms the health of workers in the workshop. If they are stacked and stacked immediately after printing, the solvent will not evaporate completely, and consumers will also have secondary pollution in use.

Baidu encyclopedia-printing ink

Baidu Encyclopedia-Ink (Printing Material)