As we all know, the screen printing machine is composed of several major factors, the screen mesh, the squeegee, the ink, the vaccum printing table and its substrate. Use the basic concept that a part of the perforated ring of the screen plate graphic and text can penetrate the ink, and the part of the perforated ring of the non-text graphic cannot penetrate the ink to carry out printing. If you want to exceed the actual effect of good printing, you must manipulate the pressure of screen printing. So how to manipulate the pressure in the printing of the screen printing machine? The following is a detailed introduction by the staff of Vility elite manufacturer:
In screen printing, suitable and well-proportioned printing pressure is the key to obtain high-quality screen printing. If the printing pressure is too small, the printing plate will not touch the substrate and the printing cannot be performed, resulting in the printing text and graphics are not detailed, the ink thickness is uneven, etc.; when the printing pressure is too high, the metal screen will be deformed Too big, unclear printing patterns, serious damage to the screen and squeegee, and other common faults in printing. If the printing pressure is uneven, there will be a lot of common failures of promotional materials. Therefore, manipulating the elements that endanger the printing pressure and improving the uneven printing pressure becomes the main problem to be dealt with by the screen printing process.
The effect of the printing pressure of the screen printing machine is to ensure sufficient line contact between the screen and the printing surface, and under this prerequisite, the lower it is, the better. Because the greater the pressure, the squeegee is in good contact with the screen, but the flattening level of the metal wire mesh and the level of the squeegee in the orifice ring are high, so the amount of ink transfer is small, and the deformation of the squeegee is larger, which will affect the filling. The oil condition causes great harm, and it will also enlarge the deformation of the screen, and the sliding friction between the scraper and the screen will also increase, which not only increases the friction on the metal screen, but also jeopardizes the squeegee rate of the packaging printing.
In the whole process of screen printing, the squeegee and the screen are horizontally touched and cause pressure, so the squeegee will inevitably be damaged after the inevitable frequency of application. Together, it is inevitable to hit the scenery in the application, so the scraper will show scars, and the damage of the scraper will harm the copying efficiency; therefore, before copying, you need to check the verticality, sharpness and shortcomings of the wound of the scraper sealant strip.
After the scraper is damaged, it needs to be sharpened and then applied. The sharpening is divided into technical sharpening and mechanical equipment sharpening. Generally speaking, during technical sharpening, the effect of sharpening will be compromised due to the focus point and unsteady pressure of the scraper. In order to ensure the verticality of the cutting edge, sandpaper can generally be pasted on a flat wooden board and placed along the edge. The siding is erected in the milling position and is upright with the milling board. The quality of the scraper sharpened by mechanical equipment is symmetrical and reliable, which is better than technical sharpening. You should also inquire about the sharpened scraper in the production and manufacturing of practical activities.
The printing pressure of the squeegee is in immediate contact with the ink delivery. The greater the printing pressure, the greater the ink delivery volume. The spreading of the squeegee will cause the expansion of business outlets, and the print will be blurred when it is not optimistic; the smaller the printing pressure will be. , The smaller the quantity of ink delivered, the less clear business outlets or the incomplete prints.
This is the detailed introduction of how to manipulate the pressure in the packaging and printing of the left and right screen printing machines. There are many factors that endanger the uniformity of the screen printing pressure, such as the elasticity of the metal screen, the mesh distance, the deformation of the screen frame, and the metal screen. The harm of printing pressure uniformity.