How is the three heat-proof label paper waterproof?

The key to the waterproof function of the three heat-resistant label paper is its unique coating and protective layer design. The following is the specific way to achieve waterproof function:

1. Add waterproof coating

Heat-sensitive coating: On the basis of conventional heat-sensitive paper, the three heat-resistant label paper adds an additional waterproof coating on top of the heat-sensitive coating. This layer of coating can form a dense protective film, effectively blocking the penetration of water, thus protecting the print content from water erosion.

2. Selection of high-quality base paper

Low water absorption: The three heat-resistant label paper uses high-quality base paper with low water absorption as the base material. This kind of base paper itself has good water resistance, which can reduce the damage of water to the internal structure of the paper to a certain extent.

3. Synergistic effect of coating and protective layer

Three-layer structure: Three-layer heat-resistant label paper usually has a three-layer structure, including a paper base, heat-sensitive coating and protective layer. These three layers work together to form a strong waterproof barrier. The paper base provides basic support, the thermal coating is responsible for printing color, and the protective layer is mainly responsible for waterproof, anti-oil, anti-scratch and other protective functions.

4. Optimization of waterproof performance

Special process treatment: In the production process, the heat-sensitive label paper may also go through a series of special process treatment, such as surface calendering, coating curing, etc., to further improve its waterproof performance.

5. Waterproof performance in practical applications

Adaptability to humid environment: The heat-resistant label paper performs well in humid environments, maintaining the clarity and integrity of the label and avoiding blurring or damage caused by water erosion.

Sum up

By adding waterproof coating, selecting high-quality base paper, optimizing the synergistic effect of coating and protective layer, and special process treatment, the three heat-resistant label paper achieves its excellent waterproof function. These measures together constitute a strong waterproof barrier, so that the three heat-resistant label paper can still maintain good printing effect and durability in a humid environment.