Screen printing mesh is the best helper in the printing industry. Its requirements for printing equipment are not very high. And it is a tendency to customize the service. It is more convenient to choose direct customization with the factory. Guaranteed.Screen printing is theoretically the number of lines, the higher the number of meshes, the clearer the pattern. But the matching printed materials are also different. Therefore, it must be combined with printing paint. Combined with the above data, 1 micron = 1/1000000 one micron is equal to one millionth of a meter. Can describe the accuracy of the screen printing dot.
Introduction to screen printing stretch nets
1 stretch net front frame treatment. The new frame cleans the oil with an alkaline detergent or sands the mesh surface with sandpaper to improve the bonding fastness; the old net has to scrape the residual pulp and old glue in addition to the old net.
2 Apply adhesive. Polyvinyl acetal glue is generally used to coat the surface of the frame. The coating requirements are thin and uniform and cannot be stacked. The new frame should be coated twice.
3 stretch net program.
4) Precautions for stretching nets.
1. When the wire mesh is twisted, each tweezers should be on the same warp (weft) as much as possible to ensure that the screen is smooth and evenly stressed.
Appropriate tension requirements must be fully considered when stretching the net.
Because the fineness and printing effect of the flat screen printing has a direct relationship with the tension of the stretch net. Stretching tension is generally controlled by the amount of stretch of the screen. The overall requirement for a good screen is not only elastic, but also has a certain degree of resistance to elongation.2. The mesh and the frame are firmly bonded without local loosening.
3, the patch should be strong, no water leakage, water seepage.
4, after the frame is stretched, it is best to put it for more than 24 hours before it can be glued and sensitized to prevent the frame from being deformed too much. Do not use it immediately, otherwise it will cause the plate to be inaccurate.
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