Workpiece description: The optical lens is covered with a protective film on both sides to prevent the lens from sticking to glass shavings or foreign matter when it is cut by CNC. There is printing ink in the center of the lens. The customer hopes to develop an automated process to automatically remove the protective film on both sides of the lens without any glue residue, and the lens surface must be completely clean without particles. And the printing ink in the center of the lens cannot be damaged.
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Before washing, look. The left picture below shows that the protective film on both sides of the lens has not been removed. The picture on the right below shows that the protective film of the lens has been removed, leaving adhesive residue.
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Fix the lens with the protective film not removed and the lens with the protective film removed with a clamp.
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Synthesize Xiwei TMSynGC04 adhesive remover, heat it to 70~80°C, put it into the lens, clean it with 40Khz, 50W/L ultrasonic wave for 10 minutes, take it out, and found that although the protective film is wrinkled, it has not completely fallen off. Continue to soak for 20 minutes, and find that the protective film has come off. Rinse with water, the protective film will fall off automatically. Rinse with water to rinse off.
Soak for 10 minutes
Soak for 20 minutes
Rinse off with water.
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Then use the dust cleaning agent PTC17plus, clean it under ultrasonic wave (70~80℃, 40Khz, 50W/L) for 5 minutes, take it out, and rinse it with pure water.
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Place it in a clean room and let it dry in the shade. It was found that the lens was not completely cleaned, and there may be some residual glue. And the ink in the middle of the lens was unharmed.
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Suggestions and discussions: