Elements that should be noted when using mirror inks in screen printing

[China Glass Net] 1. Mirror ink is relatively thin, just like water, then the printing factory prints the trick when printing is the focus. How to print too slowly, there will be two problems, one is that such a thin mirror ink will leak under the screen, and second, the mirror ink is easier to absorb the moisture in the air, so that the mirror after printing Poor function, for this reason, when printing, the mirror ink is poured on the screen and there is a need for continuous printing, in order to adjust the smooth printing, even if the speed of the workpiece is viewed while printing, the final effect of printing will be given. affect.

2. When printing mechanically, the ink returning knives used cannot be made of hard aluminum or stainless steel, and the colloidal ink returning knife is probably used to ensure uniform coating of the screen printing ink, so that the mirror surface acts together.

3. Because the ink is relatively thin, the selection of the screen should be selected with a high number of meshes, and the hardness of the squeegee should be harder than 80°.

4. The tension of the screen is slightly lower, the mesh distance is also adjusted closer, and the scraping pressure of the scraper is appropriately reduced so that the mirror effect can occur.

5. Before using the mirror ink, it should be mixed thoroughly, so that the metal powder and the resin should be mixed well and ensure the appearance of the mirror surface. Otherwise, it will affect the occurrence of the mirror surface.

6. During the printing process, the ambient temperature and humidity when printing the mirror ink is very important. Because the ink is easy to dry on the screen, it is impossible to realize silk screen printing in an environment with relatively large air circulation, otherwise it is very simple to block the net and become agar-like. Therefore, when printing the screen, it should prevent air activity as much as possible. And wet, silk screen environment should be strengthened to remove moisture. If the mirror ink is stored at 20 ° C and screen printing at 20 ° C, the printability will be very good.

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