Green ink "green" revolution (Photos) 2

Water-based ink FAQ

Transparency has always been a weakness in water-based ink applications. Because the solids content of such inks is usually low, sometimes as low as 30%, it is not possible to obtain ideal prints on garments such as color, k-color, or navy clothing. System effect. The water in the water-based ink evaporates during the curing process, forming a rather distinct and very thin transparent ink film. As mentioned earlier, for white clothing, this will often have no effect. On the contrary, in order to achieve some kind of creativity to achieve some visual effects, water-based ink can also be effectively used in the processing of colored clothing, but dark clothing. In general, such inks cannot be used. In addition, this type of ink has a very fast drying speed on the screen screen itself, and the long-term printing production effect is very poor or even impossible. Although the addition of retarder can play a role, the drying speed of the ink on the screen plate is still a very difficult problem.

The method of using the background color is an effective way to solve the problem of dark clothing printing. However, this kind of application cannot be called an environmental protection method because the content of formaldehyde is relatively high, and the pungent odor of the discharged color hinders its application. Many printing companies even prohibit using this method in the production process.

However, in recent years, with the in-depth research and development of ink discharge, related technologies have made great progress. The content of formaldehyde contained in it has dropped, and the odor has also been significantly improved. In some newly introduced products, the original discharge agent zinc sulphate has been replaced by sodium-based equivalent materials, and its emergency effectiveness is still quite outstanding. Although there has been a certain breakthrough in technology, it is expected that the discharge of ink will have a longer-term development, and actively encourage the development of more environmentally friendly products, and to maintain this driving force can continue.

Ink manufacturers have been studying how to increase the solid content in water-based inks in recent years, and hope to improve the printing adaptability on dark clothing through improvement. This trend has been particularly evident in the past 10 to 15 years. Although the initial effect has a clear improvement in transparency and color stability, it does not increase the retention time on the screen screen. Some of these types of inks are even more difficult to control and the drying time is shorter. The ink selection process is still a difficult problem: Cheap inks may be more environmentally friendly, they display good color effects and transparency in dark garments, and they are easy to apply to light-colored garments after dilution. However, they are difficult to use. Adapt to long-term printing production. Moreover, although retarder can be used to extend the drying time, it is not possible to solve the problem. Many printing manufacturers still regard water-based ink as a taste of the production process, although this is an indispensable chicken rib. .

Continue to focus on water-based ink

The extension of shelf life and the reuse of water-deficient inks by the use of emulsifiers can also reduce the waste of water-based inks and increase the sustainable use of consumables. All in all, the prospect of water-based ink is very promising. The major trend of protecting the environment has now been verified in various fields of energy-saving economy, and it appears that there is a firm momentum for further strengthening. After all, one day everyone can see that the application of environmentally friendly screen printing inks has been used in various places. Once used as an essential toxin ingredient in ink formulations, it will only remain in the past.

From its roots, the special development trend of water-based ink makes it necessary to play a very important role in the reform of the screen printing industry. Although the thermosetting inks will not be eliminated in a short period of time, it is certain that the ink manufacturers have spent more time than before to develop environmentally friendly water-based inks, especially after expecting to be in the field of special effects apparel printing. With a great deal of success, water-based and environmentally-friendly ink products will easily occupy a considerable share of the market.