In a high temperature environment, how will the color of color thermal label paper change?

In high temperature environments, the color of color thermal label paper may change significantly, mainly as color fading or fading. Here's a breakdown of the phenomenon:

First,Composition and reaction mechanism of heat-sensitive coating

The thermal coating of color thermal label paper is mainly composed of colorless dyes (dark dyes), color developing agents and other auxiliary components. When these components are subjected to high temperatures, their chemical stability may be affected, resulting in an enhanced or accelerated reversibility of the color reaction. Specifically, the high temperature may induce the decomposition of the colored product back to a colorless state, or accelerate the rate of chemical reaction between the dye and the color developer, but the result is a lighter or disappeared color.

Second,Specific changes under high temperature environment

1.Color fading:

In a high temperature environment, the color on the color thermal label paper may gradually fade. This is because the high temperature promotes the decomposition and reaction of the chemical substances in the heat-sensitive coating, making the original color of the product gradually decompose back to a colorless state.

The fading rate depends on the formulation of the thermal coating, the quality of the paper, and the specific storage conditions (such as temperature, humidity, light, etc.).

2.Fade in color:

Even if the color is not completely faded, the high temperature may cause the color on the color thermal label paper to fade. This is because the high temperature affects the reaction balance between the dye and the color developer, so that the concentration of the color product is reduced, which is manifested as a lighter color.

Third,Influencing factors

1.Thermal coating formula:

Different thermal coating formulations have different tolerance to high temperatures. Some high-quality thermal papers may use a more stable combination of dyes and color developers that can resist the effects of high temperatures to a certain extent.

2.Paper quality:

The quality of the paper will also affect the performance of color thermal label paper in high temperature environments. Poorer quality paper may be more susceptible to high temperatures, causing color changes to be more pronounced.

3.Storage conditions:

In addition to temperature, humidity and light are also important factors affecting the color stability of color thermal label paper. High temperature, high humidity and strong light exposure may accelerate the color fading process.

Fourth, response measures

Avoid high temperature environment: When storing and using color thermal label paper, try to avoid exposing it to high temperature environment. It is recommended to store the storage in a cool, dry, and ventilated place, and keep the storage temperature within an appropriate range, such as 5 ° C to 35 ° C.

Choose high quality products: When purchasing color thermal label paper, you can choose those products that have been specially treated or produced with high-quality formulas to improve their tolerance to high temperatures.

In summary, the color of color thermal label paper may fade or fade under high temperature environment, which is due to the reaction mechanism of the chemical substances in the thermal coating affected by high temperature. In order to maintain the color stability of the label paper, try to avoid high temperature environment and take appropriate storage measures.