What are the main components of the heat-sensitive label paper?

The main components of the heat-proof label paper involve a number of layers, including its base material, heat-sensitive coating and a special three-proof protective layer. Here is a detailed analysis of its main components:

First, basic materials

Polyester film or polypropylene film: The base material of the three heat-sensitive label paper is usually polyester film (PET) or polypropylene film (PP). Both materials have good physical and chemical properties to meet the needs of different applications. Polyester film is known for its excellent heat, cold, chemical and mechanical properties, while polypropylene film is popular for its high transparency, good toughness, low cost and other characteristics.

Second, heat sensitive coating

Thermal coating: The core of the three heat-resistant label paper is its thermal coating, which is mainly composed of color forming agent, color developing agent, sensitizer, stabilizer, binder, pigment, lubricant and other substances. These components deliver biochemical reactions under specific conditions, thus realizing the printing and display of information.

pH control: In the process of preparing thermal paper, it is necessary to strictly control the pH value of thermal paint, which is generally required to be between 7.5 and 8.5 to ensure the stability and printing effect of the paint.

Third, three protection layer

Waterproof, anti-oil, anti-friction: the special feature of the three heat-resistant label paper is that its surface is coated with a layer of three anti-protective layer, which gives the label paper waterproof, anti-oil, anti-friction (including anti-PVC, anti-scratch) characteristics. The specific composition of this protective layer can vary from manufacturer to manufacturer and product to product, but often contains chemicals that enhance surface tension and wear resistance.

Sum up

In summary, the main components of the three thermal label paper include polyester film or polypropylene film as the base material, thermal paint as a key layer for printing and information display, and a special three protective layer to ensure the stability and durability of the label paper in a variety of harsh environments. These ingredients work together to make the heat-sensitive label paper widely used in electronics, aviation, aerospace, national defense and other fields.

It is important to note that since the specific ingredients of different manufacturers and products may vary, the above information is for reference only. In practical applications, it should be selected and used according to specific needs and product specifications.