Green Printing – Digital Printing Technology

Green Printing – Digital Printing Technology

Friends who are engaged in printing work know that many preparations used in printing are very harmful to people, and will also cause pollution to the environment. Now that the problem of environmental pollution is more serious, as the printing industry, is there such a technology that can reduce or eliminate the problem of printing pollution. Air pollution caused by the use of ink solvents, coating solutions, dampening solutions and cleaning solutions, as well as the residues of these inks and solvents and printing machine cleaning agents, can produce hazardous waste, while film cleaning, plate making and cleaning systems generate wastewater, all of which can cause great harm and damage to human health and the ecological environment inside and outside the factory. Screen printing machines occupy a favorable market position in the field of large-format billboard and poster printing, which require the application of solvent or water-based inks, U-V curable inks and coatings. However, contamination does not necessarily occur in product printing, but in the screen cleaning process after a job is completed or after a work cycle. Screen printing equipment is generally cleaned using solvents in cleaning solutions. In many cases, it is necessary to use a strong concentration of solvent to dissolve dry ink, which is very harmful to the body. Solvent gases in the washing area and in the printing room need exhaust systems to remove these harmful gases, so the cleaning solvents of hazardous waste must be handled in accordance with relevant government regulations. Digital technology can reduce the cost of industrial waste disposal, and label printing is the beneficiary of digital printing. Gravure and flexo printing technology for narrow web web printing require liquid inks, and the solvents or water bodies in them contain many chemical additives, such as glycols, and some printing machines use UV-curable inks. However, the final procedure of every job must be to clean the inkjet table and transfer drum with a print cleaning solvent. Here we also have to deal with the problem of air pollution emissions and hazardous waste removal. Digital presses, on the other hand, no longer require solvents or other cleaning solutions such as water-based inks to clean the press, so the result is a significant reduction in exhaust gases and waste. Digital printing has also revolutionized workflows. Because of the amount of silver contained in the film and the nature of the developing chemicals, darkroom chemicals were once a deadly hazard in wastewater, but they are also gone. With computer-to-plate making, traditional printing no longer needs to use film as a medium to make plates, and with direct printing, digital printing presses do not need printing plates. Digital technologies have provided a fruitful solution to the increasing cost of industrial waste disposal. Digital printing can help reduce expenses such as the cost of obtaining permits, the potential intangible costs of violating environmental laws, and the cost of collecting and disposing of waste. The above is a brief introduction to digital printing, and green printing technology is the development direction of the printing industry in the future.