How does the circular colored copperplate label paper fade under ultraviolet light?

The degree of fading of circular colored copperplate label paper under ultraviolet light mainly depends on factors such as its material, printing process, and UV resistance treatment.

Firstly, the material of the label paper has a significant impact on the degree of fading under ultraviolet radiation. Some materials such as PET or synthetic paper have good wear resistance, chemical corrosion resistance, and UV resistance, which can resist UV radiation to a certain extent and slow down the fading speed. However, if the material of the label paper is not UV resistant, the graphics and text on the label may quickly fade under prolonged exposure to sunlight.

Secondly, the printing process is also a key factor affecting the degree of fading. By using screen printing technology combined with special sun resistant ink, the printed images and text can be protected from the influence of sunlight, thereby extending the service life of the label. On the contrary, if the printing process is poor or the ink used is not sun resistant, the fading speed of the label under ultraviolet light may accelerate.

In addition, whether the label paper has undergone anti UV treatment is also an important factor affecting its degree of fading. Labels with UV resistant ink can more effectively resist UV radiation, thereby slowing down the fading rate. Some high-end label paper products also use special UV resistant coatings or processing techniques to enhance their UV resistance performance.

However, it should be noted that even with high-quality materials, printing processes, and UV resistant treatments, circular colored copperplate label paper may still experience some degree of fading under prolonged exposure to sunlight. Therefore, when selecting label paper, a reasonable choice should be made based on the product's usage environment and the durability requirements of the label.

In summary, the degree of fading of circular colored copperplate label paper under ultraviolet light depends on various factors, including material, printing process, and UV resistant treatment. When choosing label paper, these factors should be considered comprehensively to ensure that the label remains clear and readable for a long time.