Environmental waterless offset printing ink

Offset offset printing is a more complex printing method to eliminate fountain solution, improve print quality, increase production efficiency, and is more environmentally friendly, but the development of a special waterless offset ink to match the surface characteristics of the new plate to achieve a smooth ink There is still a lot of ink formulation work to be done to transfer, strip and transfer, and we need to continue to develop this new area that is evolving gradually, environmentally friendly waterless offset printing inks.

1, waterless offset printing ink tray development status

Compared with the first and second generations, the third-generation waterless offset printing has been used with low-quality waterless offset printing inks. In addition, the printed matter is no longer a thick ink film printing but a thin film of the same county as ordinary offset printing. The nature of other printing operations and stackability are the same as ordinary offset printing tombs. The improvements in sheet-fed, web presses in terms of lift-off speed and automation are endless, but the impact of print speed on printability far exceeds the expectations of the press designer, especially for ink transfer. Sex has a significant effect.

1Dry-O-ColorArtis, a sheet-fed offset printing ink: “Dry-O-Color Artis”, a five-year-old offset printing ink, improved the transferability of ink on the basis of the grave and anti-dirty properties of the product. Prefectural, solid powder and post-processing suitability, etc., more adapted to the requirements of high-speed, multi-color sheetfed waterless offset press.

a, design ideas. After achieving the low drillability and low drilling rate required for high-speed printing, special additives must be used to further control anti-dirt. To maintain the drillability and degree of drilling, only the flowability of the ink can be further improved to increase the ink. The transferability. The specific approach is: To improve the dispersion of pigments. Use high-dissolving resin binders: To maintain dirt resistance. Use non-aromatic hydrocarbon solvents that allow fast diffusion of the printing plate oleophilic resin and the non-image part of the silicon layer, and develop new binders.

b, ink characteristics. The ink flowability was improved by about 15% and the ink transferability was improved by about 10% under almost the same conditions as the ink drillability and the degree of drilling.

c Market evaluation. Good gloss, fast solid powder: close to the quality of water offset: with the printability comparable to ordinary offset ink; ink hiding power has also improved, a small number of users put forward: the ink's twist-print performance is reduced by about 5%; color reproduction Sex is not exactly the same as printing with water; the density in the field is slightly inferior to the offset with water.

2 Thermoset type waterless offset printing inks for high-speed web offset presses: Web offset printing Compared with single-sheet printing, the printing speed is increased by about 2 times, and the flowability of the ink is required to be higher. Drilling requirements are slightly lower. Adopted with. The same resin design method of ry-O-ColorARis is also suitable for rotary waterless offset inks, that is, it can replace the flowability of the ink on the premise that it does not reduce the dirtyness of JEcT, so that the ink can obtain good printing at high speed. Transferability.