What is the impact of the coating amount of long-lasting three proof thermal paper on its performance?

The coating amount of long-lasting three proof thermal paper has a significant impact on its performance, mainly reflected in the following aspects:

1、 Hair color performance

The color development performance of thermal paper refers to its ability and effect to develop color after being heated. An increase in coating amount usually means an increase in the content of active ingredients such as colorants and color developers in the thermosensitive layer, thereby improving the color performance of thermosensitive paper. Specifically, when the coating amount increases to a certain extent (such as above 6g/m ²), the color density value of thermal paper will significantly increase, making the printed image clearer and more vivid. However, when the coating amount is too large, continuing to increase the coating amount may no longer have a significant effect on improving the color performance, and may even lead to a decrease in other properties.

2、 Wear resistance performance

Wear resistance is one of the important indicators for measuring the service life of thermal paper. Long lasting three proof thermal paper usually has high wear resistance, thanks to its special coating formula and process. The increase in coating amount can improve the wear resistance of thermal paper to a certain extent, because more coating materials can form a tougher protective layer to resist the erosion and wear of external factors. However, excessive coating can also lead to a thick coating, which in turn affects the flexibility of the thermal paper and the contact effect of the print head, thereby reducing the wear resistance.

3、 Waterproof and oil resistant performance

Long term three proof thermal paper has excellent waterproof and oil proof properties, mainly due to the waterproof and oil proof agents in its coating. An increase in coating amount can improve these properties to a certain extent, as more waterproof and oil resistant agents can form more effective barriers to prevent the penetration of moisture and grease. However, excessive coating can also lead to thick coatings, affecting the breathability and printing effect of thermal paper.

4、 Other performance

In addition to the above performance, the coating amount may also affect the printing clarity, glossiness, tensile strength and other properties of thermal paper. For example, an increase in coating amount may improve print clarity, as more colorants can form sharper images; But at the same time, it may also affect glossiness and tensile strength, as excessive coating may lead to surface unevenness and fiber structure damage.

In summary, the coating amount of long-lasting three proof thermal paper has a significant impact on its performance. It is necessary to comprehensively consider the requirements of wear resistance, waterproof and oil resistant performance, and other properties while ensuring the color performance, and determine the appropriate coating amount range. In the actual production process, adjustments and optimizations need to be made according to specific application scenarios and requirements.