The screen printing process is generally the last processing process (after all surface treatment processes), and there can be surface treatments such as electroplating, spraying, oxidation, and electropolishing before silk screen printing.
Although the surface of the screen printing workpiece can have raised parts, it is required that no unevenness and protruding objects are allowed in the area covered by the screen printing screen. There should be no sharp edges and corners near the silk screen area to avoid screen breakage during silk screen printing.
The silk screen printing of the workpiece must be positioned. When designing the process, it is necessary to consider whether the silk screen can be positioned. If necessary, a positioning fixture can be added. The workpiece after silk screen printing must be baked at high temperature in the oven, so there should be no objects damaged by high temperature on the workpiece.
What are the occupations for screen printing machines?

1. Packaging screen printing industry
The main service object of the packaging industry is the screen printing industry. The continuous development and use of screen printing technology will better serve the packaging and decoration industry and contribute to the prosperity of the packaging and decoration industry. The screen printing industry brings a broader market.
2. The circuit screen printing industry
occupies 80% of the screen printing industry in the electronics industry. For example, in the production of a TV, screen printing is used in many places, and the development of large-scale flat-panel display devices such as display screens (PALC) is increasingly inseparable from screen printing.
3. Advertising screen printing industry
There will be more shopping malls for screen printing in commercial advertisements, especially electrical appliances companies, tobacco and alcohol companies, in order to promote their own images, they all attach great importance to the effect of advertisements.
4. Glass products
Screen printing for professional glass products manufacturing, such as engineering glass printing, architectural glass printing, automotive glass printing, furniture glass printing, home appliance glass printing and so on.
5. Handicraft screen printing industry
With the development of western China and the urbanization of rural areas, the ceramic tile production line has a strong momentum of growth.
In order to increase and improve the bonding strength between the printing material and the substrate, the screen printing machine should consciously carry out auxiliary treatment on the surface of the substrate to be screen printed. It is not acceptable to not treat the surface of the substrate before silk printing (including removing dust). Treatment before silk screen printing is required to improve the adhesion between the printing material and the substrate, and post-screen printing treatment, such as anodic oxidation penetrating ink, ink and micro-bead foaming ink, must be post-treated to meet the requirements . Depending on the material of the substrate, the corresponding treatment method is adopted.