Alcohol-soluble nitrocotton optically variable ink and preparation process thereof

Jiangsu Taige Ink Co., Ltd. produces light-changing inks for cigarette packaging materials, mainly used on packaging sheets and skins, such as small boxes of hard cigarette boxes, carton packaging of cigarettes, and soft packaging of cigarettes At present, the small boxes used are all ester-soluble optical variable inks, and their VOCs are mainly ethyl acetate, n-propyl acetate and dilution solvent n-propyl acetate in the ink. The content in the ink is 50-70%, and the dilution ratio According to the original ink: diluent = 2:1, therefore, the release of n-propyl acetate and ethyl acetate is very large during normal production of this type of product, about 400kg and 80kg per day respectively, which not only has a strong pungent smell in the workshop, but also seriously pollutes Environment, and as the world has higher and higher requirements for environmental protection and low carbon, and with VOC emission charges, the production and preparation of optical variable inks increase the cost, so an environmentally friendly optical variable ink that can reduce VOC emissions, energy saving and emission reduction Ink technical problems need to be solved urgently