The anilox roller transfers the ink by the mesh hole, and the mesh hole is very small. It is easy to be clogged by the cured ink during use, which affects the ink transfer effect. It is impossible to print good prints without paying attention to cleaning. There are several methods for cleaning anilox rolls.
1. Manual cleaning method
The cleaning agent is applied to the surface of the anilox roller, and the chrome-plated metal anilox roller should be cleaned with a copper wire brush; while the ceramic anilox roller must be cleaned with a wire brush.
This type of cleaning method is more convenient and will not cause pollution, but if the cleaning is not thorough, it will affect the ink transfer effect. Generally suitable for anilox rollers with low anilox or anilox rollers that are not very dirty.
2. Strong corrosion chemical cleaning method
Apply the corrosive cleaning agent (generally an alkaline solution) evenly on the surface of the anilox roller. If necessary, wrap a layer of plastic products on the surface of the anilox roller to prevent the evaporation of the chemical solution. After the cured ink is sufficiently softened, the anilox roller is washed with water or alcohol solution (acid solution such as acetic acid is not available) combined with manual cleaning method.
This type of cleaning method has a good cleaning effect, but it has a certain corrosive effect on the anilox roller and will cause environmental pollution.
3. Jet cleaning method
Spray the softening cleaning medium of baking soda to the surface of the anilox roller to crush the solidified ink to achieve the purpose of cleaning. Baking soda is easy to dissolve, non-toxic, its crystal is easy to break when it touches other substances, and it will not damage the surface of the anilox roller and the ink hole wall. Therefore, this cleaning method has good cleaning effect and has promotion and Use value.
4. Ultrasonic cleaning method
Immerse the anilox roller in an ultrasonic cleaning tank filled with a chemical cleaning solution. During cleaning, the anilox roller rotates slowly, and the frequency conversion device in the liquid tank that can send high-frequency sound waves starts to work, which causes the solution to vibrate and generate bubbles that cause an inward explosion. , Continuous inward explosion force, the ink is expelled from the net hole, with the cleaning fluid flowing away, the cleaning time is generally 15 to 45 minutes.
However, due to long-term vibration, tiny cracks will be produced on the surface of the ceramic anilox roller, and the cracks will continue to accumulate, causing high pH or coarse chemicals to penetrate into the porous ceramic coating, gradually corroding the substrate, thereby affecting the texture The life of the roller, so when cleaning the anilox roller, especially the ceramic anilox roller, avoid too frequent.
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