How to identify the quality of thermal label paper?

Identification of the quality of thermal label paper can be carried out from the following aspects:

1. Appearance inspection

Color and gloss: The color of the better quality thermal label paper should be slightly green, rather than too white. If the paper is very white, too much phosphor may be added, which will affect the quality and storage time of the paper. At the same time, the surface of the paper should be smooth and smooth, without obvious uneven phenomenon.

Coating uniformity: Observe whether the coating of the paper is uniform, and the paper with uneven coating may have blurred handwriting or broken lines when printing.

2. Physical test

Fire test: Heat the back of the paper with a lighter and observe the color change of the paper. If the paper appears brown after heating, it indicates that the heat-sensitive formula may be unreasonable and the storage time is short. The better quality paper should appear black and green after heating, and the color block is uniform, and the color gradually fades from the center to the four sides.

Sun exposure test: The printed paper is daubed with a highlighter and placed in the sun to accelerate the reaction of the heat-sensitive coating to light. Observe how quickly the paper turns black. The paper that turns black first indicates that it can be stored for a shorter time.

Friction test: Use a standard eraser or cloth to repeatedly wipe the printed thermal paper to observe whether the handwriting is easy to fall off or blur. High quality thermal paper should have good friction resistance.

Third, the printing effect

Printing clarity: Select a small section of thermal label paper, print it through the printer, and observe the printing effect. High quality thermal label paper should be able to clearly and quickly present the printed content, the edge of the text or image smooth, no blur or broken line phenomenon.

Color uniformity: The color after printing should be uniform, no obvious color difference or spots.

Iv. Other considerations

Branding and certification: Choosing products from well-known brands can reduce the risk of buying inferior products. At the same time, pay attention to whether the thermal label paper has passed the relevant quality certification, such as ISO, CE, etc., which indicates that the product meets certain quality standards and safety requirements.

Environmental protection: Consider the environmental protection of thermal label paper, choose non-toxic, degradable, environmentally friendly products in the production process.

To sum up, the identification of the quality of thermal label paper needs to consider the appearance, physical characteristics, printing effect, product certification and brand reputation. Through comprehensive testing and evaluation, thermal label paper with good quality and suitable for use can be selected.