Flat screen production
Flat screen printing is not difficult for screen printing workers with certain experience, but the surface silk screen printing is difficult to cope with the general manual silk screen printing method. Generally, the company uses a curved printing mesh machine to complete. During printing, the squeegee is used to align the substrate bus bar and press the screen plate, and the screen plate is moved in the horizontal direction, and the substrate is synchronously rotated to print the pattern on the screen plate onto the curved surface of the substrate. The use of curved screen printing machines to print curved substrates is highly efficient and suitable for mass production. However, the purchase of curved screen printing machine is large, and it is not suitable for small and medium-sized enterprises to make special fixtures to fix the substrate. We have summed up a simple and easy manual screen printing method from the actual work experience, which is introduced as follows. At present, the commonly used frame has two kinds of aluminum frame and wooden frame. The general screen is flat. If the screen is made into a curved screen that matches the surface of the substrate, the method of manually hand-printing a planar object can be used. To finish the surface silkscreen. During printing, the squeegee presses the screen and moves along the curved surface of the substrate scoop to scrape the ink from the mesh of the web squeegee support roller onto the surface of the substrate. The key to this silk screen method is to make a curved screen. My experience is to use wooden frames, there is no special requirement for the choice of mesh. Before making the frame, first study the surface shape of the surface of the substrate, and draw the curve outline of the substrate on the wooden frame. Then use a planer to plan the wooden frame along the contour of the surface into the desired curved shape, and the frame is made. Considering the elasticity of the mesh, in order to match the surface of the screen to the surface of the substrate, the curvature of the curved surface on the wooden frame can be appropriately increased. The screen printing and adjustment of the curved screen are the same as the ordinary manual silk screen printing method. As long as there is a certain silk screen experience, the beautiful graphic can be printed on the surface of the curved substrate. For those small and medium-sized enterprises who need to print curved substrates without investing in curved screen printing machines, try this new method. A simple method of silk screen printing is a widely used printing technology, which has the characteristics of wide substrate, low investment, clear printing, beautiful appearance and good gloss. Among them, manual silk screen printing only needs to make some simple mesh frames and silk screens, so it is very suitable for small and medium-sized enterprises and small workshops.
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