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Technology Development to Reduce Pollution in Printing Industry 29/09/2012
Ink is believed to be one of the pollution sources in printing industry. Ink consists of several kinds of organic solvents which give rise to the emission of volatile organic compounds. Now, the annual emission of volatile organic compounds throughout the globe is predicted to be over ten hundred thousands of tons as a result of use of ink in printing industry. According to scientists, volatile organic compounds, or VOCs, have major impact on the integrity and health of atmosphere and they are believed to have greater influence on greenhouse effect than carbon dioxide. What's more, the threat to human and animal health of VOCs can't be ignored neither. To the influence of sunlight, OVCs will lead to chemical compounds and photochemical fumes which are harmful to our health.
But the situation in the Billboard Printing seems to have been improved in recent years thanks to the development of environment-friendly technologies. First of all, inks which are less detrimental to environment have been developed. For years, printing companies have been making attempt to reduce the organic solvents in the ink. As a result, environment-friendly inks such as water-based ink and soybean ink have now been widely used in the industry. Take water-based ink for an example. One of its biggest advantages is that it notably reduces the emission of VOCs and thus avoids the harm to both environment and human health. Besides, there is no lingering smell of organic solvents over the surface of printed packages on which such ink is applied. At present, water-based ink has been already widely applied in an array of sectors ranging from foodstuffs to pharmaceutical industry which have higher requirement on product safety.
Besides, the industry is also making efforts to reduce pollution by improving the ink cleanser. Traditionally, gasoline and kerosene are used as ink cleaner, but both gasoline and kerosene themselves are harmful to the environment. So, the use of gasoline and kerosene as ink cleaner has been phased out in major developed countries. Instead, new ink cleanser which has less impact on environment has been developed. Still, the ink dissolved in the cleanser will be collected and sent to professional agencies for safe disposal. In this way, the pollution of ink cleanser is largely addressed. What's more, equipments used in the industry such as screen printing equipment have also undergone great improvement.
In all, the momentum in the development of green printing technologies is strong. While reducing the pollution in the industry, the application of new technologies such as photo printing acrylic further improves the printing quality. So, we have every reason to believe that printing industry will usher in brand new perspective in development.