Does low temperature affect the color stability of color thermal label paper?

Low temperature has a certain impact on the color stability of color thermal label paper, but compared with the high temperature environment, its impact is small. Here's a closer look at the problem:

First, the effect of low temperature on the composition of thermal coating

The thermal coating of color thermal label paper is mainly composed of colorless dyes (dark dyes), color developing agents and other auxiliary components. The chemical stability of these components is relatively good at low temperatures and will not cause significant chemical reactions as easily as high temperatures. However, prolonged exposure to low temperatures may still have subtle effects on some components of heat-sensitive coatings, but this effect is usually not as direct and significant as high temperatures.

Second,Specific changes in low temperature environment

1.Color stability:

In a low temperature environment, the color stability of color thermal label paper is relatively good. Low temperature does not directly cause the already colored product to decompose back into a colorless state, so the color will not fade quickly. However, if the label paper is stored at a low temperature for a long time and the ambient humidity is high, it may lead to moisture deterioration of the heat-sensitive coating, which affects the clarity and stability of the color.

2.Physical properties change:

At low temperatures, thermal labels may change physical properties, such as deformation and hardening. Although these changes do not directly affect the color stability, they may affect the overall use effect and print quality of the label paper. Thermal label paper stored at low temperature for a long time may need to be properly treated to restore its original performance after being restored to normal temperature.

Third, the degree of influence and conditions

1.Temperature range:

In general, in a low temperature environment below minus 10 degrees Celsius, the performance of thermal label paper may be more unstable. However, in the higher low temperature range (such as between 0 degrees Celsius and minus 10 degrees Celsius), its color stability is usually not affected too much.

2.Humidity factor:

The humidity in low temperature environment is one of the important factors affecting the color stability of thermal label paper. High humidity will accelerate the process of moisture deterioration of thermal coatings, thus affecting the clarity and stability of the color. Therefore, when storing heat-sensitive labels in a low temperature environment, pay attention to controlling the humidity of the environment.

Fourth, response measures

Avoid long-term exposure to low temperatures: Although low temperatures have a relatively small effect on the color stability of thermal label paper, it is still recommended to avoid long-term exposure to low temperatures. Especially in environments with high humidity, attention should be paid to controlling storage conditions.

Proper preheating treatment: Before using thermal label paper in a low temperature environment, it can be properly preheated to restore its physical properties and use effect.

Control of ambient humidity: Whether storing or using thermal label paper, attention should be paid to controlling the humidity of the environment to prevent the thermal coating from being deteriorated by moisture.

In summary, low temperature has a certain impact on the color stability of color thermal label paper, but it is relatively small. During storage and use, control the temperature and humidity to ensure the label performance and print quality.