Does the color of color thermal label paper change over time?

The color of color thermal label paper does have the potential to change color over time. This discoloration phenomenon is mainly caused by the following factors:

1. Characteristics of heat-sensitive materials

The color of color thermal label paper produces a chemical reaction based on the colorless dye and color developer in the thermochromic layer when heated. However, the color products produced by this chemical reaction are often unstable and susceptible to environmental factors. Over time, these colored products will gradually break down, causing the color to fade or disappear.

2. Influence of environmental factors

Light: Long periods of light, especially direct sunlight, will accelerate the breakdown of pigments in thermal coatings, resulting in color fading.

Temperature: The high temperature environment will accelerate the reaction rate of the chemical substances in the thermal coating, thus speeding up the color fading process.

Humidity: Too much or too little humidity can have an adverse effect on the thermal coating, resulting in color changes or coating damage.

3. Storage conditions

Improper storage conditions will also accelerate the color fading of color thermal label paper. For example, exposing label paper to direct sunlight, high temperatures, or humidity will accelerate the fading of color.

4. The influence of adhesive tape and other materials

Putting tape or other pastes on colored thermal label paper may also cause the color to fade. This is because the tape or other paste may react chemically with the heat-sensitive coating, which can destroy the stability of the coating and cause color changes.

Method for extending the color stability of color thermal label paper

Choose high quality thermal paper: Choose reliable quality and good brand reputation thermal paper products when purchasing.

Reasonable storage: Store the label paper in a cool, dry, and light-free environment to avoid long-term exposure to sunlight or high temperatures.

Avoid using adhesive tape and other items: When you need to attach labels, try to avoid using adhesive tape and other items that may react chemically with the heat-sensitive coating.

In summary, the color of color thermal label paper is indeed likely to change color over time. Therefore, it is necessary to pay attention to relevant factors in the use and storage process to extend the service life of the label paper and maintain the stability of its color.