What are the main raw materials for BOPP thermal sensitive synthetic paper?

The main raw materials for BOPP thermal sensitive synthetic paper include the following categories:

1、 Basic raw materials

Polypropylene (PP) resin: Especially isotactic polypropylene, its content needs to reach a high standard (such as 95%~97%) to ensure the tensile strength and physical properties of the film. Polypropylene resin is the main component of BOPP thermosensitive synthetic paper, providing the basic structure and strength of the paper.

2、 Functional fillers

Pigments and dyes: added as needed to give paper specific colors and functional properties. These fillers enable BOPP thermosensitive synthetic paper to meet diverse color requirements and specific functional requirements.

3、 Additives

Antioxidant: Used to prevent oxidative degradation of polypropylene resin during processing and use, thereby extending the service life of the product.

Lubricant: Helps improve the processing performance of polypropylene resin, reduce friction and energy consumption during the processing.

Fluorescent whitening agent: used to improve the whiteness and brightness of paper, and enhance the appearance quality of products.

Titanium dioxide: a commonly used white pigment with excellent coverage and dispersibility, which can be used to improve the whiteness and opacity of paper.

4、 New materials

With the development of technology and the improvement of environmental protection requirements, some new materials have also been introduced into the production of BOPP thermal sensitive synthetic paper, such as:

High molecular weight polypropylene: can significantly improve the tensile strength, impact strength, and toughness of paper.

Modified polypropylene: Polypropylene is modified by adding appropriate toughening agents, nucleating agents, and other modifiers to improve its processing performance and physical properties of the final product.

Biobased additives, such as starch and cellulose, can reduce dependence on fossil resources and lower carbon emissions during the production process.

Halogen free flame retardants: improve the environmental performance of products.

Waterproof and oil resistant coating material: significantly improves the water and oil resistance of paper.

Antibacterial coating material: effectively inhibits the growth and reproduction of microorganisms such as bacteria and mold, and improves the hygiene performance of the product.

Nanomaterials such as nano silica and nano calcium carbonate can significantly improve the optical properties, mechanical properties, and thermal stability of paper.

In summary, the main raw materials for BOPP thermosensitive synthetic paper include polypropylene resin, functional fillers, additives, and some new materials. The selection and ratio of these raw materials have a significant impact on the performance and quality of the product.