Why can't thermal label paper be taped to the surface

The reasons why the surface of thermal label paper cannot stick adhesive tape can be mainly analyzed from three aspects: the characteristics of thermal paper, the influence of adhesive tape, and the requirements in practical applications:

1、 Characteristics of Thermal Paper

Thermal label paper is a special type of coated processing paper, whose surface is treated with a high thermal sensitivity thermal sensitive coating. This coating contains adhesive, color developer, colorless dye and other components, which can undergo chemical reactions and change color when encountering heated print heads, forming graphics and text. Thermal paper has the characteristics of low cost, fast printing speed, and good printing effect, and is widely used in fields such as supermarket checkout, medical diagnosis, logistics and express delivery.

2、 The influence of tape on thermal paper

Chemical reaction interference: The coating on the surface of thermal paper is thin and sensitive. When the tape is bonded to the thermal paper, the adhesive easily enters the coating on the surface of the thermal paper, thereby disrupting the small chemical reactions in the thermal paper coating. This will cause distortion of printed content and affect print quality.

Destruction of coating structure: The pressure and tearing force generated during the tape pasting process may damage the coating structure on the surface of the thermal paper, causing the coating to peel off or discolor, further affecting the printing effect and service life of the thermal paper.

Impact on shelf life: The shelf life of thermal paper is usually short, and the chemicals in the tape may accelerate the aging process of thermal paper, causing it to fade or fail in a short period of time.

3、 Requirements in practical applications

In practical applications, thermal label paper is usually used in scenarios that require quick printing and label replacement, such as supermarket electronic scale labels, chemical laboratory product information labeling, etc. These scenarios require labels to have clear and durable printing effects for quick identification and tracking of product information. Therefore, sticking adhesive tape will damage the printing effect and service life of thermal label paper, and cannot meet the needs of practical applications.

In summary, in order to ensure the printing quality and service life of thermal label paper, it is necessary to avoid sticking adhesive tape on the surface of thermal label paper. If it is necessary to protect the thermal label paper or prevent it from being worn, other methods can be considered, such as covering it with transparent plastic film or selecting thermal label paper with waterproof, moisture-proof, and oil resistant functions.