Screen printing machine manufacturer: screen printing machine printing process

　　Screen printing machine manufacturer: screen printing machine printing process

　　Screen printing machine process is printing ink through part of the screen after the screen is printed on the substrate, the rest of the screen is blocked, ink can not pass. When the printing ink is poured on the silk screen, the ink will not leak to the substrate through the mesh under the action of no external force, and when the scraper to a certain pressure and tilt Angle to the ink, it will be transferred to the substrate through the silk screen, to achieve image reproduction.

　　First, precautions

　　1. Related parameters

　　In the screen printing machine, screen mesh, screen diameter and screen textile and selection of materials directly affect the size of the screen tension. These parameters are used to measure the tension of the screen as it is stretched. When measuring the tension, the detected tension point should be 10cm away from the inner edge of the mesh frame, otherwise the measured tension is not accurate.

　　2. Tension value

　　Tensile value refers to the maximum tensile value is the specific screen strength displayed, that is, a variety of mesh, different wire diameter can withstand and can rebound the maximum tensile value, if more than the given tensile value, mesh will lose elasticity, into plastic deformation, this should be paid attention to when stretching mesh.

　　3. Meridian tension and zonal tension

　　Tension unit: Newton /CM (N/CM), can be measured by the Newton tension meter. A tensiometer can measure the tension in both the meridian and the latitude. The so-called meridional tension of the screen is the tension on the winding direction of the entire screen, that is, the tension on the direction of the edge; The zonal tension of the screen is the tension in the width direction of the screen.

　　4. Mesh material and diameter

　　The same kind of material made of different wire diameter, different mesh, its tension is different, that is, the same mesh, its tension is different, that is, the same mesh diameter, its tension is different, because the degree of tensile and mesh diameter is proportional to.

　　Two, pay attention to the ink color

　　1. The principle of "from light to dark", whether the preparation of light or bright ink, when the color is close to the template, should be careful. Different manufacturers of ink, it is best not to mix, try to use the same manufacturer of different colors of ink color, otherwise it will produce uneven tone, serious condensate and ink scrap phenomenon.

　　2. When matching ink, try to add some different colors of ink as little as possible. Generally speaking, the less color ink type is used, the better the mixing effect is.

　　3. Some screen printing machine ink is dried by drying, light dry color is lighter than dry, dark dry color is deeper. In addition, it is easy to overlook the difference in ink tone before and after drying. Generally speaking, through natural drying (solvent volatile ink), substrate is plastic, metal, paper, glass, etc., the color will not change; However, if ceramic coloring materials are used, coloring can only be done empirically due to combustion and oxidation. And through heat fixing, light fixing screen printing ink dry, color changes in chroma. When the amount of ink adjustment is large, the ink adjustment machine can be used to complete the color adjustment in a short time.