What is the function of additives in colored thermosensitive synthetic paper?

The additives in colored thermosensitive synthetic paper play a crucial role in the production and performance of the paper. These additives mainly include high molecular weight polypropylene, modified polypropylene, bio based additives, halogen-free flame retardants, functional fillers (such as pigments and dyes), antioxidants, lubricants, fluorescent whitening agents, titanium dioxide, thermal sensitive coating materials, waterproof and oil proof coatings, antibacterial coatings, and nanomaterials. The main functions of these additives are as follows:

1. Improve physical performance:

High molecular weight polypropylene and modified polypropylene, as substrates or modifiers, can significantly improve the tensile strength, impact strength, and toughness of paper, enhancing its physical stability.

The introduction of nanomaterials, such as nano silica, nano calcium carbonate, etc., can further improve the optical properties, mechanical properties, and thermal stability of paper.

2. Improve processing performance:

Modified polypropylene can improve its processing performance by adding appropriate toughening agents, nucleating agents, and other modifiers, making paper easier to form and process during the production process.

Lubricants can reduce the frictional resistance of paper during processing and improve production efficiency.

3. Granting special functions:

The use of bio based additives can reduce dependence on fossil resources and lower carbon emissions during production, meeting environmental requirements.

The application of halogen-free flame retardants can improve the flame retardancy of paper and increase its safety during use.

Thermal sensitive coating material is a key component of colored thermal sensitive synthetic paper, with higher sensitivity, stability, and weather resistance to meet a wider range of application needs.

Waterproof and oil resistant coatings can significantly improve the water and oil resistance of paper, making them suitable for applications that require high protective performance.

Antibacterial coatings can effectively inhibit the growth and reproduction of microorganisms such as bacteria and molds, improving the hygiene performance of products.

Functional fillers such as pigments, dyes, etc. can give paper specific colors and functional properties.

4. Enhance environmental performance:

The use of environmentally friendly additives such as bio based additives and halogen-free flame retardants can reduce the negative impact of paper production and use on the environment.

5. Optimize visual effects:

Fluorescent whitening agents can improve the whiteness and brightness of paper, making printed images or text clearer and more vivid.

Pigments such as titanium dioxide can enhance the covering power and opacity of paper, improving the printing effect.

In summary, additives in colored thermosensitive synthetic paper play an important role in improving the physical properties, processing performance, endowing special functions, enhancing environmental performance, and optimizing visual effects of the paper. The reasonable use of these additives can make colored thermosensitive synthetic paper more suitable for the needs of various application scenarios.