Discussion on common quality problems in UV glazin

2022-08-17
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Discussion on common quality problems in UV glazing of self-adhesive labels

common quality problems in UV glazing of self-adhesive labels are:

1. After glazing, the printed matter turns yellow, red and changes color after a period of time

2, D brush surface is not bright; Pleated or streaked

3. The polished surface is sticky and not smooth

4. The Polish layer is not firm, ink drops, bubbles, pockmarks, etc

the solution to the problem is:

1. Use high-quality and effective polish

2. Reasonably control the amount of polish, neither too little nor too much, and pay attention to the leveling effect

3. Pay attention to the printing quality of the bottom ink. It is required to print the ink volume sufficiently and firmly, and do not dry it thoroughly

first of all, we should take the resource-saving development path. 4. Correctly adjust the viscosity of glazing oil according to the actual situation of the glazing surface

5. It still needs some time to correctly adjust the surface tension of the varnish to make it less than the surface tension of the ink. Solvents or surfactants with low surface tension can be added

6. Avoid crystallization of the ink layer, and conduct surface treatment if necessary

7. Adjust the speed of the machine and the amount of polish. He will achieve nothing. The relationship between drying energy

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