How to make screen printing screen printing under the best environmental conditions, let me bring you some tips.
1. Keep the tool clean and ready for use. The plate room should be free of dust.
2. Check the screen tension. All multicolor overprint screens need the same tension.
3. Fully degreasing: Clean with a soft brush and a water source with a certain pressure.
4. Dry at a temperature below 40°C.
5. According to the manufacturer's recommended method, pre-adjust the photoresist.
6. Use a clean, slightly rounded edge sizing machine for gluing. The gluing area is at least 10% smaller than the inner diameter of the frame.
7. When gluing, start with the printing surface first. The number of times of gluing depends on the solid content of the emulsion, the viscosity, the number of screen meshes, and the desired screen thickness.
8. When drying the screen, the printed surface should be placed face down (avoiding the flow of photosensitive glue back to the ink surface).
9. For screen printing with fine lines and halftone printing, apply one or more photoresists on the printed surface after each drying until the photosensitive layer on the printing surface is flat.
10. Keep the exposure machine's glass vacuum blanket clean. Check whether the film is correct, whether the film surface is pasted on the screen, whether the black level is up to the required level, whether it is placed correctly, and whether the exposure machine has sufficient time to assemble.
11. Set the correct exposure time and keep a record. Every three months or when the exposure decreases, the exposure time should be tested and adjusted to correct.
12. Keep the exposed screen away from the light source (daylight, incandescent light).
13. Use water with proper pressure for development during development. In particular, the ink surface should be thoroughly cleaned and cannot be rinsed until the surface is not slippery. Insufficiently exposed photographic film will be stripped after cleaning.
14. Use a soft, clean paper, a clean cloth or a vacuum cleaner to remove excess moisture.
15. Use a suitable make-up material to repair the screen.
16. Write all parameters to the web: thickness, exposure time, date, name.
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