How to test the performance of three proof thermal paper?

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Testing the performance of three proof thermal paper is a comprehensive process that involves multiple aspects of testing. Here are some key performance testing methods and steps:

1、 Appearance testing

Purpose: To inspect the surface of thermal paper for flatness, smoothness, scratches, stains, holes, obvious streaks, cracks, spots, and other defects.

Method: Visual inspection is used to comprehensively observe the overall appearance of the thermal paper.

2、 Size testing

Purpose: To measure the length, width, thickness, and other dimensions of thermal paper to ensure compliance with standard requirements.

Method: Use measuring tools such as calipers and micrometers to accurately measure the size of thermal paper.

3、 Chromaticity and printing quality testing

Chromaticity measurement:

Purpose: To determine the chromaticity parameters of the three proof thermal paper and check for defects such as color spots and uneven color differences.

Method: Use a reflective colorimeter for measurement and compare the measured values with the standard values.

Print quality inspection:

Purpose: To check the printing clarity, resolution, color saturation and other indicators of thermal paper.

Method: Use a printer to print test samples, and conduct visual inspection or use professional testing equipment such as colorimeters and resolution testers for testing.

4、 Physical performance testing

Mechanical strength testing:

Purpose: To evaluate the mechanical strength of three proof thermal paper, including puncture resistance, scratch resistance, and tear resistance.

Method: Needle puncture test, scratch resistance test, tear test and other methods are used for testing.

Water resistance testing:

Purpose: To examine the performance of the three proof thermal paper after contact with moisture and determine its waterproof performance.

Method: Immerse the paper in water and observe whether it changes color or fades.

Friction resistance test:

Purpose: To evaluate the performance of three proof thermal paper under friction and determine its friction resistance.

Method: Use a friction testing machine to test and record indicators such as image retention rate.

5、 Durability and stability testing

Durability testing:

Purpose: To simulate the service life and stability of three proof thermal paper in different environments.

Method: Thermal aging test, wet heat aging test, ultraviolet aging test and other methods are used for testing.

Image saving performance test:

Purpose: To check whether the image of the three proof thermal paper is clear and complete after long-term storage.

Method: Conduct image preservation performance testing according to relevant standards, and record indicators such as the retention rate of color rendering and blank areas.

6、 Chemical performance testing

Detection of harmful substance content:

Purpose: To detect the content of harmful substances such as heavy metals, formaldehyde, benzene, etc. in the three proof thermal paper to ensure compliance with environmental requirements.

Method: Chemical analysis was used for detection.

In summary, testing the performance of three proof thermal paper requires comprehensive consideration of multiple testing methods and steps. Through comprehensive and systematic testing, the quality of the three proof thermal paper can be ensured to meet usage requirements, and reliable technical support can be provided to users.