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- Difficult problems and handling methods of photosensitive resin
- TIME£º 2020-4-14¡¡CLICKS£º1652¡¡
- Difficult problems and handling methods of photosensitive resin
Recently, according to many customers, photosensitive adhesives are not easy to master, so now tell everyone how to solve the problem of photosensitive adhesives:
Problem 1: After printing, the photosensitive film produces bubbles or pinholes
1. Screen factor: no degreasing or degreasing, clean layout
2. Printing problem: the scraping speed is too fast, the scraper is not sharp
3. Substrate problem: the surface is too dirty
4. Ink problems: The viscosity of the ink is too high, the thinner is not used properly, and the ink has problems, please contact the supplier.
Problem 2: Unable to develop, difficult to remove film
1. Baking problem: temperature is too high; time is too long; oven failure 2. Ink problem: improper dilution ratio; ink expired.
Problem three: there is not enough glue in the development
1. The problem of pre-baking: the pre-baking temperature is too high, the pre-baking time is too long; the pre-baking time is too long
2. Exposure problem: the exposure time is too long, causing adhesion between the dots; the film is defective
3. Development problem: the concentration of the developer is not enough, the use time is too long; the development temperature is too low; the pressure is not enough
4. Ink problem: the product expires, it is not baked after printing, and it is placed for too long.
Question 4: The developed image is easily destroyed or the photosensitive film has bottom leakage
1. Pre-bake problem: the temperature is too low, a small amount of liquid remains; the time is not enough, and the printing ink layer is too thick
2. Oven problem: no blast, resulting in uneven temperature in the oven, partial over-baking, partial insufficiency
3. Exposure problem: the exposure is too small, the exposure is not complete
4. The problem of the brush machine: water pollution, causing grease to pollute the layout.
Question 5: Sticky film or indentation on the surface
1. Pre-bake problem: the temperature is too low; the time is not enough. There is no blast in the oven.
2. Exposure problem: the exposure time is too long, the heat generated makes the temperature too high; the cooling system of the exposure machine is defective; the vacuum pressure is too large.
Question 6: Poor etching resistance
1. The thickness of the cured film is not enough;
2. Not enough photosensitive time;
3. Poor corrosion resistance of photosensitive ink, change the ink. - PREVIOUS£ºCongratulations to Zhejiang Ro
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