How to solve the problem of color fading after A4 adhesive printing?

A4 stickers are prone to color fading after printing, which may be caused by various factors. Here are some targeted solutions:

1、 Optimize printing materials

Choose high-quality adhesive materials: Ensure that the adhesive materials have good adhesion and weather resistance to resist fading.

Using specialized ink: Choosing specialized ink that matches the adhesive material can improve the adhesion and color stability of the ink.

2、 Adjust print settings

Control ink layer thickness: Using deep ink thin printing method to reduce the thickness of the ink layer can avoid incomplete drying and fading caused by ink accumulation.

Optimize drying conditions:

Extend the drying or curing time of printed materials.

Raise the room temperature, ventilate appropriately, and accelerate the ink drying speed.

Check if the UV lamp is aging and clean the reflector to ensure the output power and drying effect of the UV lamp.

3、 Improve storage environment

Avoid high temperature and humid environments: Prolonged exposure to high temperature or humid environments can accelerate ink fading and material aging. Therefore, printed A4 adhesive labels should be stored in a dry and cool environment.

Reduce direct sunlight: Prolonged exposure to sunlight can cause ink fading and material aging. Therefore, A4 adhesive labels should be avoided from being exposed to direct sunlight.

4、 Improve print quality

Regular cleaning of printing equipment: Regularly clean the printing plate and ink delivery system of the printing machine to prevent dust and impurities from affecting print quality.

Adjust printing pressure: Ensure even printing pressure and avoid fading caused by poor ink adhesion in certain areas.

5、 Other measures

Using a protective layer: Coating a transparent protective layer on the surface of the adhesive label can improve its wear resistance and weather resistance, thereby extending its service life and reducing fading.

Perform printing testing: Before formal printing, a small batch printing test can be conducted to check the ink adhesion and color stability, and adjust and optimize according to the test results.

In summary, solving the problem of color fading after A4 adhesive printing requires multiple approaches, including optimizing printing materials, adjusting printing settings, improving storage environment, enhancing printing quality, and taking other measures. The comprehensive application of these measures can effectively improve the printing quality and durability of A4 adhesive labels.