Plastic ink printing and parsing

Ink or water-based ink, which is also called water-based ink. Typical is the fundamental difference between ink and traditional solvent-based inks with water ( Solvent or water with very little help & ndash; — Alcohols) Replace the organic solvent in solvent ink manufacturing water-based connection, the connection material and pigment, Pigment or dye) And specific fertilizer copy of printing ink can be referred to as the ink. Today, a professional flexible packaging manufacturers are packing to explain to you what is the ink printing of plastic packaging bags. A, the advantage than traditional water-based ink printing ink, ink join guess should only contains water, do not contain transpiration sexual organic compounds, and compared with the traditional solvent-based inks, the ink and wash painting exhibit a range of benefits, first can be divided into the following several aspects: 1, good environmental protection in the process of printing, ink and discharge water vapor, only does not discharge any transpiration organic compounds, printing places and the surrounding environment is not polluted by toxic and harmful organic solvent, superior environmental performance; 2, good health security ink join guess only water without toxic and harmful organic solvent, in printing products, not the existence of residual organic solvents, so the printing ink, compared with the traditional solvent-based inks, has better health security; 3, produce travel security ink join guess only water and no flammable organic solvents, ink storage warehouse and production workshop, are not due to the presence of flammable organic solvents, cause burning, blasting, etc. 4 ink printing, save resources, and solvent-based inks, in the process of printing the monotonous, emissions into the atmosphere is just rich sources and low price of water vapor, rather than a lack of industry sources of rare resources & ndash; — Organic solvent, thus saving resources, beneficial to the development point of view, humans can continue to choose alternative solvent ink printing ink printing is also very good. Two, the two difficulties of ink printing 1, facing the water's surface tension, not easy to spread out on the surface of the substrates problem printing ink on the surface of substrates, spreading is finished printing processing and ensure the quality of life. As is known to all, the water's surface tension ( More than 70 mn/m) For plastic film base material (such as the surface tension of low Surface tension is only about 40 mn/m or less) Wettability is very poor, should be dropped substantially, the surface tension of the ink system and ink spread out on the surface of the substrates. Therefore needs to choose a specific agents, to ink system modification, the surface tension of the ink system dropped substantially, went down to a level below the surface tension of the substrate, to facilitate the spreading of ink on the printing substrate, to create conditions for exquisite printing results. Many high quality surface active agent, the advent of drop of ink system research work for ink manufacturers, provides the conditions of the wicked; Research and development of the science and technology, the operators of the ink, for to find a way to drop ink surface tension, the long time of hard work, finally achieved rich results and better deal with the problem down the surface tension of the ink system, for ink and exquisite printing, laid the warp and woof of excellence. 2, is faced with the problem of moisture volatilizes large latent heat, is not easy to dry in the large latent heat of evaporation, water is faced with the problem of how to ink printing speed of marching. Industrialized production, the speed of produce directly tied to its capital, and thus produce speed bumps, a kind of technology is often choose whether have market competition ability of one of the selected factor. Water and some organic solvent boiling point and evaporation heat of comparison by tabular data, we see not hard, latent heat of water evaporation, significantly higher than that of organic solvent latent heat of evaporation, alcohols, esters and other organic solvent evaporation is 3 ~ 8 times of latent heat. Owing to the high latent heat of water evaporation, the monotony of ink painting, natural is drab and much more difficult than solvent-based inks, to complete the high-speed printing, facing a huge battle. Practice indicated that only relying on the ink yield, improve the formulation of the ink, travel to ink monotonous speed, the effect is limited right, the problem of ink printing speed, marching demand printing equipment, version roller unit, and printing enterprise and many other units to work together. Now marching ink printing speed operation, although has made great open, to achieve the effect of inclination, still need to do a lot of work. Three, the ink development utilization present situation from the beginning of the 60 s and seventy s last century, part attaches great importance to environmental protection and saving the material resources with breadth of vision, beginning is committed to the development of ink painting workshop, through years of hard efforts to, ink printing has made great strides to turn: many ink and ink research and development, production enterprises, the content of VOCs is below 5%, have higher levels of ink production unit, ink VOCs produced by the content of practice, and even can be lower than 1%, close to zero; The benzene material in the ink and heavy metal content is close to zero, arrived in cannot be checked out. With ink products in the plastic flexible packaging production practice, the use of gradually obtained the success. Now, industrial developed countries abroad, ink printing packaging products, have reportedly reached more than 80% of the printing and packaging products; , by contrast, domestic ink using appropriate is limited, especially the ink printing plastic film, is still in its infancy, push the ink printing work, has a long way to go.