Ink includes main components and auxiliary components, which are evenly mixed and repeatedly rolled to form viscous colloidal fluid. It consists of adhesive (resin), pigment, filler, additive and solvent.

According to the List of Hazardous Chemicals No.2828 in 20 15 edition, synthetic resins, paints, accessories, coatings and other products containing flammable solvents belong to hazardous chemicals. The definition and determination principles of hazardous chemicals in the List of Hazardous Chemicals are highly toxic chemicals and other chemicals that are toxic, corrosive, explosive, combustible and combustion-supporting, and are harmful to human body, facilities and environment.

Binder is the liquid component of ink, and pigment is the carrier. In the printing process, the adhesive carries pigment particles, and the pigment particles are transferred from the ink of the printing machine to the substrate through the ink roller and the printing plate to form an ink film, which is fixed, dried and adhered to the substrate. The gloss, dryness and mechanical strength of ink film are related to the properties of adhesive.

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According to the new national standard, patterns cannot be printed within the range of 15 mm from the mouth of the cup and 10 mm from the bottom of the cup. Do not artificially add fluorescent whitening agent; Do not use recycled materials as raw materials to make paper cups; Use environmentally friendly ink in the production process.

Dong Jinshi, secretary-general of the International Food Packaging Association, said that there is no real food-grade ink in China at present, and there is no printing ink that can be used to contact food;

When a consumer drinks water from a paper cup, his lips touch the mouth of the cup, and the ink on the printed matter is likely to be absorbed into the body. Blank 10 mm is required for the printed matter on the bottom of the cup, also considering that the cups are stacked together when packaging, and the bottom of the cup touches each other, so the ink will rub against the inner wall of another cup.

Jinsha County People's Government-List of Hazardous Chemicals (Version 20 15)

Baidu encyclopedia-printing ink

Phoenix. Com- new standard for paper cups: printing ink is toxic and not easy to eat.