How to test the performance of long-acting heat-sensitive label paper?

The performance test of long-acting thermal label paper is a comprehensive process that involves multiple aspects of evaluation. Here are some common test methods and criteria:

First, basic performance test

1. Appearance quality

Visually check the surface flatness, color uniformity, and damage of the thermal paper.

2. Dimensional stability

Measure the size change of thermal paper under different temperature and humidity conditions to assess its stability.

3. Print quality

By printing test sample, check the print clarity, resolution, color saturation and other indicators of thermal paper.

Second, three defense performance test

1. Water resistance

Test the image retention rate of thermal paper after contact with water to assess its water resistance.

2. Oil resistance

Test the image retention rate of thermal paper after contact with grease to evaluate its oil resistance.

3. Anti-wear property

The wear resistance of thermal paper is tested using equipment such as friction testing machines to determine its durability under friction.

Third, thermal performance test

1. Thermal sensitivity

Use the thermal sensitivity tester to test the thermal sensitivity of the thermal paper, that is, the speed of color development at different temperatures.

2. Color rendering speed

The color development time of the thermal paper at different temperatures was recorded by heating color development experiment to evaluate its color development speed.

3. Color resolution

Observe the image sharpness of the thermal paper after color development to ensure that the printed content is easy to identify.

Fourth, light resistance test

The thermal paper is exposed to light conditions and its color changes are observed to determine its light resistance. This is especially important for labels that need to be used outdoors or in bright light environments.

Fifth, chemical stability test

Analyze the chemical composition of thermal paper to check whether it complies with relevant standards and regulations. This helps to ensure that the thermal paper does not degrade due to chemical reactions during use.

Sixth, other performance tests

1. Tensile strength

Tensile testing machine is used to test the tensile strength of thermal paper to ensure that it is not easy to tear during use.

2. Temperature tolerance

Test the performance of thermal paper at high or low temperatures to assess its range of application.

Seventh, test instruments and methods

Appearance detector: Used to detect appearance defects of thermal paper.

Size measuring instrument: Used to measure the size of thermal paper.

Printer: Used to print test proofs.

Thermal performance tester: used to test the thermal performance of thermal sensitive paper.

Chemical analyzer: Used to detect the content of harmful substances in thermal paper.

Tensile testing machine, tear testing machine: used to test the physical properties of thermal paper.

In summary, the performance test of long-acting thermal label paper is a comprehensive and meticulous process, involving multiple aspects of evaluation. Through these tests, you can ensure that the thermal paper can maintain stable performance and clear printing results in a variety of use environments.