How to judge the quality of PET thermosensitive dumb silver paper?

Judging the quality of PET thermosensitive matte silver paper can be considered from the following aspects:

First, appearance quality

1.Color and gloss:

Color: High quality PET thermal matte silver paper usually has a uniform and slightly green appearance, which is reflected by the proper treatment of its thermal coating and protective layer. If the paper is too white, it may mean that too much phosphor has been added, which may affect its printing effect and storage time.

Gloss: The surface of the paper should be smooth and flat, without obvious bumps or bubbles. Too strong reflected light may also indicate that the phosphor content is too high, which is not conducive to long-term use.

2.Coating uniformity: By observing whether the surface of the paper is uniform, the coating quality of the thermal sensitive coating and protective layer can be preliminarily judged. Uneven coating may cause the print to be unclear or fade easily.

Second, physical characteristics test

1.Fire test:

Method: Gently heat the back of the paper with a lighter and observe the change of the color of the paper.

Judging criteria: If the paper appears brown after heating, it indicates that the heat-sensitive formula may be unreasonable and the storage time may be short. High quality thermal paper should be black and green after heating, and the color is uniform. At the same time, pay attention to whether there are streaks or uneven color blocks on the paper, which also indicates that the coating is uneven.

2.Sun exposure comparison:

Method: Apply the printed paper with a highlighter and put it in the sun to observe the speed of the paper turning black.

Judging criteria: The faster the blackening speed of the paper, the shorter its storage time. This is because the highlighter accelerates the reaction of the heat-sensitive coating to light, thus simulating the aging process of the paper in its natural environment.

Third, print effect evaluation

1.Clarity and stability: The actual print test is carried out by the printer to observe the clarity, stability and edge smoothness of the printed content. High-quality thermal paper should be able to present the printed content clearly and quickly, and the edge of the text or image is smooth without blurring or broken lines.

2.Scratch resistance: Gently run your fingernail across the printed area to see if the printed content is easily chipped or blurred. High-quality PET thermal matte silver paper should have good scratch resistance to ensure long-term readability of the printed content.

Fourth, other consideration factors

1.Brand and certification: Choosing PET thermosensitive matte silver paper products with well-known brands and relevant quality certifications (such as ISO, CE, etc.) can reduce the risk of buying inferior products. Well-known brands often have a more stringent quality control system and after-sales service guarantee.

2.Application scenario requirements: Select the appropriate PET thermal matte silver paper according to the specific application scenario requirements. For example, for labels that need to be stored for a long time or exposed to harsh environments, products with greater durability and stability should be selected.

To sum up, judging the quality of PET thermal matte silver paper requires comprehensive consideration of appearance quality, physical characteristics, printing effect and other relevant factors. Through careful observation and testing, you can buy high-quality products that meet your needs.