UV移印油墨不同于其他类型的油墨, UV油墨在UV能量下快速固化干燥. 当紫外线穿透墨水时, 墨水中的感光分子会与相邻的分子发生反应, 整个过程在几秒或几毫秒内. 具有耐摩擦特性, 耐酸碱、无挥发物.
热升华墨水在使用过程中需要特殊处理, 那是, 印刷后, it needs to be heated to make the substrate porous, so that when the dye contacts the heated substrate surface, the dye in the ink becomes gaseous, and then enters the substrate surface, which actually changes the surface color of the substrate. Once the substrate cools, the ink sticks to the substrate surface.
The most common application of sublimation ink is computer keyboard printing, as well as those with higher requirements for oil resistance and wear resistance, which can not be achieved by using two-component ink. 尤其是, because sublimation ink actually changes the surface color of substrate, it is difficult to match the substrate and ink color. 所以, the color of substrate must be lighter than the color needed for final printing, because the color change of sublimation ink on the substrate surface with darker color is often less obvious.
Special pad printing inks include edible inks, silicone resin inks, lubricating inks, corrosion resistant inks, conductive inks and UV curing inks. The ability of these inks to quickly become sticky will determine whether the ink can be effectively transferred to the substrate surface. 同时, in order to adjust the printability and performance of the ink, in addition to the addition of solvents and catalysts, there may be many auxiliaries, such as viscosity inking agent, antistatic agent, rheological agent, 等等. 然而, the use of auxiliaries will have a great impact on the printing performance of ink, so we must be careful when using them.
