How to prevent the color of round colored copperplate label paper from fading?

In order to prevent the color of the circular color label paper from fading, it can be started from many aspects, including the selection of high-quality materials, the optimization of the printing process, and the reasonable storage and use environment. Here are some specific suggestions:

1. Choose high-quality materials

Paper selection: Select coated paper with high surface strength to ensure that the binding force between the paper surface coating and the coating and between the coating and the fiber is sufficient, so as to reduce the powder phenomenon caused by the coating is pulled up during the printing process. At the same time, the acid and alkali of the paper is also an important factor affecting the ink fading and discoloration, and the PH value of the ideal paper is 7, which is neutral. Therefore, when purchasing paper, attention should be paid to its acid-base index.

Ink selection: The use of ink with good light resistance, especially in the deployment of light color, should pay attention to the light resistance of the ink after dilution. At the same time, considering the alkali resistance of the ink, avoid using ink that is easy to fade or discolor when encountering alkali.

2. Optimize the printing process

Control printing conditions: properly reduce the printing pressure to avoid excessive pressure causing the coating to be pulled up; Reduce the printing speed to ensure that the ink has enough time to dry and cure; Reduce the supply of moistening liquid to prevent excessive emulsification of ink affecting color.

Reasonable arrangement of printing color sequence: In the printing process, reasonable arrangement of printing color sequence, the light color and the ink that is easy to fade and discolor are printed first, and the deep color ink is printed after the printing to reduce the mutual interference and fading phenomenon between colors.

Drying treatment: Ensure that the printed matter is adequately dried after printing to avoid the discoloration caused by ink penetration and oxidation of conjunctiva during the drying process.

3. Reasonable storage and use environment

Avoid long-term exposure to sunlight: all inks will have different degrees of fading and discoloration after encountering light, and light color inks are especially serious. Therefore, when storing and using label paper, you should avoid long-term exposure to sunlight.

Control temperature and humidity: High temperature and humid environments may also accelerate ink fading and paper aging. Therefore, when storing and using label paper, the temperature and humidity of the environment should be controlled.

Avoid contact with chemicals: Certain chemicals may react with the ink and cause the color to fade. Therefore, the label paper should avoid contact with such chemicals.

4. Regular quality check

Periodically check the quality of label paper: Periodically check the quality of stored label paper to find and deal with problems such as fading and discoloration in time.

Record and analysis: record and analyze the use of label paper and the reasons for fading, in order to continuously improve and optimize storage and use methods.

In summary, to prevent the color fading of circular color copperplate label paper needs to start from many aspects, including the selection of high-quality materials, optimization of the printing process, and reasonable storage and use environment. Only in this way can you ensure that the color of the label paper is long-lasting and bright.