What is the function of the protective layer of thermal label paper?

The protective layer of thermal label paper plays a crucial role in the overall performance and service life of thermal label paper. The following are the main functions of the protective layer of thermal label paper:

1、 Protect thermal sensitive coating

Preventing chemical reactions: The protective layer can absorb some of the light that causes chemical reactions in the thermosensitive coating, thereby slowing down the deterioration of the printing paper and extending its storage time.

Preventing physical damage: If the protective coating is uneven or mishandled, small particles may fall off during the printing process, rubbing against the thermal sensitive components of the printer, resulting in damage to the printed thermal sensitive components. A uniform and effective protective layer can prevent this situation from occurring.

2、 Improve paper durability

Waterproof, oil resistant, and scratch resistant: Some special types of thermal paper, such as triple proof thermal paper, have a protective layer (also known as film coating) that can significantly enhance the paper's waterproof, oil resistant, and scratch resistant properties. This enhancement enables thermal label paper to remain clear and durable even in damp, greasy, or easily worn environments.

Extended service life: Due to the presence of a protective layer, the color rendering layer of the paper is less susceptible to external interference, thereby ensuring the clarity and durability of the printed content. In addition, the protective layer can extend the service life of the paper to a certain extent, reduce the frequency of paper replacement, and lower the cost of use.

3、 Adapt to special application scenarios

Logistics industry: In the logistics industry, thermal label paper needs to withstand various transportation and storage conditions. The presence of a protective layer enables thermal label paper to better adapt to these special application scenarios, ensuring clear and accurate label information.

Other fields: In addition to the logistics industry, thermal label paper is widely used in supermarket electronic scale labels, chemical laboratories, and other scenarios. In these scenarios, the waterproof, oil resistant, scratch resistant and other properties of the protective layer also play an important role.

In summary, the protective layer of thermal label paper plays an important role in protecting thermal coatings, improving paper durability, and adapting to special application scenarios. Therefore, when selecting and using thermal label paper, the quality and performance of the protective layer should be fully considered.