For screen printing machines, everyone should be familiar with it! Screen printing equipment has also played a big role in our lives and has been widely used in our industrial production. Screen printing equipment should determine the screen printing process according to the materials to ensure the quality of the products printed by the screen printing equipment. The quality of screen-printed products has a certain relationship with screen printing equipment, but it has a greater relationship with materials and screen printing processes. So what do you need to know to use screen printing equipment? The following is a brief introduction from the staff:
First, the thickness of the ink layer and the hiding rate of the screen printing equipment
        If the product printed by the screen printing equipment is thick and the hiding rate is good, the thick net and the large net (ie HD level) should be selected.
Second, screen printing equipment printing materials preservation conditions
        When printing on screen printing equipment or printing materials should be kept dry at room temperature, avoid ultraviolet rays or strong light, and lay flat on a smooth surface.
Third, screen printing equipment printing ink performance requirements
        Before the screen printing equipment is printed, the screen of the appropriate ink should be selected according to the performance of the ink.
Fourth, the screen printing equipment should be selected according to the surface condition of the substrate before printing.
        For curved surfaces or undulating surfaces, a flexible nylon mesh should be used. For highly absorbent surfaces, a high-mesh screen should be selected; for smooth surfaces, high-tension screens should be used; for rough surfaces, for low-mesh screens; for insulating surfaces, Use a static elimination screen or the like.
Fifth, the screen printing equipment has a good image resolution before screen printing:
        The wire diameter is fine, and the number of meshes is high, and the resolution is high. The wire diameter is coarse, and the number of meshes is low, and the resolution is low. However, it is not the higher the mesh, the better. If it is too high, the amount of ink generated by screen printing will be insufficient, resulting in defective or broken print. At the same time, under the same mesh number, pay attention to the influence of the wire diameter. The width of the finest line or the dot diameter that can be reproduced by the two specifications of the mesh is: L > 2d + w, d is the wire diameter, W is open The width of the hole, when d>W, the opening area of the screen is small, which affects the fluidity of the ink, causing the thread or the dot to become jagged or imprinted and damaged, and the screen printing process is too high, which will cause the printing result to be the same. The same phenomenon as the net. In general, if the screen printing apparatus is printed, if the screen opening is larger than the diameter of the mesh, the screen having a mesh diameter smaller than the diameter of the mesh can be reproduced with a higher resolution. Therefore, the following points should be noted when selecting the network;
        A. Mesh/wire diameter The larger the value, the better.
        B. The smaller the contact area between the printed surface and the substrate, the better.
        C. In order to achieve the resolution requirement, the wire diameter and the opening width of the wire mesh must satisfy a certain relationship.
        D. In order to meet the printing requirements, the relationship between the wire diameter and the ultimate tension needs to be considered.