Can thermosetting inks be used for electronic printing

As a new type of printing method, electronic printing is still not perfect. There are some misunderstandings about some of its understandings. Some people think that electronic printing can be done with thermosetting ink. Is this not the case? After the following analysis, this problem It is clear at a glance.

Thermosetting ink

Thermoset ink imaging principle. Thermosetting inks can wrap around the fibers of the substrate (eg cloth), physically react with the fibers, attach to them, and do not fade over time. Thermoset inks do not contain any binders. How does it combine with substrates (such as textile fabrics)?

Is the "temperature". The main components of thermosetting inks are PVC resins and plasticizers, which are paste-like solids at room temperature. When the temperature rises to value="150" unitname="°C"> around 150 °C , the thermosetting ink gradually melting into a thick liquid begins to slowly penetrate down into the gap of the substrate. When it returns to normal temperature, the thick liquid plastisol will re-solidify into a solid solid instead of the original paste solid. This solidified solid chemical composition is firmly integrated with the surface of the immersed substrate. The printing effect.

Thermosetting ink features. A significant advantage is that it will not block the net and make it very easy to print fine patterns. It has been widely used in the printing industry; thermosetting inks must be dried at high temperatures; thermoset ink printing is not required to clean the screens, and after ten days a month or even The next day can continue to print, this is mainly because the general ink is sticky (so it will stick in the case of not sticky) and self-curing (of course, blocking the net), while the thermosetting ink is not; thermosetting ink is difficult Printed on substrates without holes, such as metal, glass, etc.

Electronic printing

Electronic printing imaging principle. Electronic printing is to energize the screen. When the toner passes through the opening part of the screen, the electronic charge is applied. At the same time, the pattern is preheated or the solvent vapor is applied. Under the action of high voltage, and due to the electrostatic effect, the toner becomes hot. The solid pattern is fixed on the substrate and forms the same pattern as the screen.

Electronic printing features. The printing plate can be printed on any uneven, fragile, high-temperature surface without contact with the substrate; the toner particles are small and can be fixed and dried on the surface of the object instantaneously, so no drying device is needed; multi-color toner can be used for multi-color printing print.

DC voltage power supplies require high-voltage-resistant electronic components. Electronic printing devices need to have automatic positioning components. The entire set of equipment is relatively expensive ( about 5 million yuan).

Thermosetting ink

Cannot be used for electronic printing

It is not difficult to see from the above basic knowledge that the imaging principle of inks used in electronic printing is similar to that of thermosetting inks, and it is precisely because of this that some people have misunderstood that thermosetting inks can be used for electronic printing. But the fact is: can not.

Thermosetting inks can only be printed on substrates with holes and crevices, and electronic printing can be printed on any substrate. This is also the magic of electronic printing.

Thermosetting inks and electronic printing are all thermoset images of the substrate. However, the former is a thermosetting liquid ink, and the latter is a thermosetting toner.

Thermosetting inks require special drying, and the toner used for electronic printing does not require a drying device.

When the thermosetting ink is electrically heated and the temperature rises to value="150" unitname="°C"> around 150 °C , it can also achieve the following transition (see attached drawing)

However, the process of transferring thermosetting ink from paste to liquid and transferring to the substrate must be done well in the premise that the printing plate is in contact with the substrate. Electronic printing requires that the printing plate and the substrate have no contact. After the heating, the liquid thermosetting ink can only be flowed or dropped onto the substrate. This imaging effect obviously has no effect of the toner being imaged by the electrostatic action, and the charge effect can make the curved surface or the side surface behave as separate images without affecting the image. Continuity, thermosetting ink obviously can not achieve this effect.

Electronic printing is a new printing method that can be performed on the surface of any object, and it is also a trend of future printing development. Especially in the current situation where the network is rapidly developing, there is bound to be a lot of room for development.