How to judge the quality of PET thermosensitive silver paper?

To determine the quality of PET thermosensitive silver paper, the following aspects can be considered:

1、 Appearance inspection

Color:

High quality thermosensitive silver paper should have a slight greenish tint, rather than being too pure white. If the paper color is too white, excessive fluorescent powder may have been added, or the thermal and protective coating configurations may be unreasonable, affecting the quality and printing effect of the paper.

Smoothness and uniformity:

The paper should be smooth and even, with uniform color and no obvious unevenness. If the surface smoothness of the paper is not high or appears uneven, it may be due to uneven coating, which will affect the printing effect and service life.

2、 Fire baking test

Operation method:

Slowly heat the back of the paper with a lighter and observe the color change of the paper.

Judgment criteria:

If the color of the paper turns brown after being heated, it indicates that the heat sensitive formula may not be reasonable, and the storage time of the paper may be relatively short.

If the color of the paper appears black green after being heated, and the color blocks are uniform, gradually fading from the center to the surrounding areas, it indicates that the paper quality is good.

3、 Color density and clarity

Observe the printing effect:

High quality thermal sensitive silver paper should have high-density color rendering and clear handwriting, delicate printing effect, and clear and recognizable images and text.

4、 Save performance

Understand the storage performance of paper:

High quality thermosensitive silver paper should have high preservation performance, with handwriting usually able to last for 2-3 years or more, and even some special types of thermosensitive paper can have preservation performance for more than 10 years.

Testing method:

The preservation performance of paper can be tested in different environments, such as placing printed paper under different temperature and humidity conditions and observing changes in handwriting.

5、 Protective performance

Test waterproof performance:

High quality thermal sensitive silver paper should have good waterproof performance, which can effectively protect the content of the label in damp or wet environments, avoiding damage or blurring caused by water.

Test other protective performance:

According to specific requirements, the paper's oil resistance, abrasion resistance, high temperature resistance, and other properties can also be tested.

6、 Print head adaptability

Observe the printing effect:

High quality thermal sensitive silver paper should have good adaptability to the print head, not cause wear and tear to the print head, and not easily adhere to the print head.

Testing method:

You can observe the performance of the paper during the actual printing process, such as whether the printing is smooth and whether there is any paper jam.

In summary, the quality of PET thermal sensitive silver paper can be judged from multiple aspects, including appearance inspection, fire baking test, color density and clarity, storage performance, protective performance, and print head adaptability. When choosing, it is recommended to choose products from reputable channels and well-known brands to ensure quality and effectiveness.