What factors can affect the adhesion of transparent thermal sensitive label paper?

The adhesion of transparent thermal sensitive label paper is affected by various factors, and the following are some key factors:

1、 Thermal paper quality

Coating quality:

The quality of the coating on the surface of thermal paper directly affects its adhesion. Uneven or excessive coating may cause paper adhesion, affecting the adhesion effect.

The temperature resistance of coatings is also an important factor, as coatings that are not resistant to high temperatures may undergo changes in high-temperature environments, leading to reduced adhesion.

Base paper material:

The material and surface treatment of the base paper also have an impact on adhesion. The base paper should have good ink absorption and flatness to ensure that the printing ink can adhere evenly and dry quickly.

2、 Printing conditions

Printing temperature:

Printing temperature is one of the key factors affecting adhesion. Low temperature may cause ink to not fully penetrate into the thermal paper coating, affecting the adhesion effect; If the temperature is too high, it may cause the coating to melt excessively, resulting in adhesion.

Printing speed:

Printing too fast may result in ink not being fully dried and being covered by the next printing task, thereby affecting adhesion. Appropriate printing speed can ensure that the ink has enough time to dry and firmly adhere to the thermal paper.

Printing pressure:

The pressure of the print head can also affect adhesion. Appropriate pressure can ensure good contact between the print head and thermal paper, allowing ink to evenly penetrate into the coating.

3、 Storage and usage environment

Temperature:

High temperature environments may cause thermal paper coatings to soften, discolor, or age, thereby reducing adhesion. On the contrary, storing and using thermal paper in low-temperature environments may also affect its adhesion performance.

Humidity:

High humidity environments may cause thermal paper coatings to absorb water and expand, thereby affecting their adhesion and printing quality. If the humidity is too low, it may cause the paper to become too dry, which can easily generate static electricity and also affect adhesion.

4、 Label design

Shape and size:

The shape and size of the label should be selected according to the actual application scenario to ensure that the label can tightly adhere to the surface of the object and provide sufficient adhesion.

Coating protection:

Some labels may have additional coating protection, such as waterproof, oil resistant, wear-resistant coatings, etc. These coatings can enhance the adhesion and durability of labels.

5、 Surface characteristics of the pasted object

Cleanliness:

The cleanliness of the surface of the sticker has a significant impact on adhesion. If there are impurities such as oil stains and dust on the surface, it will seriously affect the adhesion effect of the label.

Roughness:

The roughness of the surface of the sticker can also affect adhesion. Overly smooth surfaces may cause labels to not adhere firmly; An excessively rough surface may cause bubbles or damage to the label during the pasting process.

In summary, the adhesion of transparent thermal sensitive label paper is influenced by various factors, including the quality of the thermal paper, printing conditions, storage and usage environment, label design, and surface characteristics of the sticker. In order to improve adhesion, these factors should be comprehensively considered and appropriate measures should be taken to adjust and optimize. For example, selecting high-quality thermal paper, adjusting printing parameters, controlling storage and usage environment, etc.