What's the difference between screen printing ink and printing ink?
Screen printing in the field of fabric printing generally use water-based ink, but at present, the printing industry is also difficult to use water-based ink, which is another difference. There are two reasons for the defects of printing, a steel plate is water resistance is not good, water ink easily eroded. Of course, if we change the resin version, you can rule out this factor, but the transfer of plastic head will be limited, it is difficult to allow silicone to transfer sufficient water-based ink.
From the printing process, pad printing ink and screen printing ink and no similarity, screen printing ink performance is under the scraper pressure mechanical structure, and pad printing ink more is transferred performance of nature. Offset printing ink transfer, plus internet printing ink plasticity should be more ideal pad printing ink. Screen printing ink in order to achieve its permeability, add a certain amount of lubricant is necessary, but the printing ink does not need such ingredients. In order to achieve the printing ink deinking, pad printing ink to add a certain release agent and other materials, and screen printing ink does not need. Screen printing ink thickness of ink, handwriting eye-catching, in order to achieve the same effect, pad printing ink color concentration must be high.
Pad printing ink in the form of printing pad surface to maintain printing ink has enough good activity hysteresis, otherwise, ink imprinting is likely to become unclear. On the other hand, the adhesion of the imprinting formed on the surface of the gel head is significantly larger than the surface tension of the silicone rubber and has a separation function, such as a heat transfer film on top of the heat transfer ink. Transfer printing ink completely transferred to the surface of the product is the most important requirements for printing ink, but the ink transfer is ideal, generally speaking, ink can only be transferred 86%. Although the initial pad printing ink is replaced by screen printing ink, it can not be said that the screen printing ink is screen printing ink, and the theory of ink is suitable for all printing processes, but different printing process has detailed requirements. It is the requirement of printing ink prompted many ink manufacturers to try making special printing ink, at present, only Germany Marabu company and Dujo company launched a special ink pad printing, it is improved based on screen printing ink.
