What are the main components of BOPP synthetic paper?

The main components of BOPP synthetic paper involve a variety of materials, mainly including the following:

1. The base resin

Polypropylene resin: As the main base material of BOPP synthetic paper, the content of polypropylene resin is between 27% and 40%. Polypropylene resin is a partially crystallized polymer by polymerization of propylene monomer. It has good physical and mechanical properties and chemical stability.

2. Functional fillers

Functional fillers: occupy an important position in BOPP synthetic paper, and its content can be as high as 58% to 70%. The specific types and proportions of these functional fillers will be adjusted according to the different uses and performance requirements of the synthetic paper to enhance the properties of the synthetic paper, such as barrier, strength, wear resistance, etc.

3. Additives

In order to improve the performance of BOPP synthetic paper, a variety of additives are usually added, including but not limited to:

Antioxidant: used to prevent oxidative degradation of polypropylene resin during processing and use, and its content is between 0.2% and 0.5%.

Lubricant: helps to improve the flow and release of synthetic paper during processing, reduce friction and wear, and its content is between 0.2% and 1%. Commonly used lubricants include erucic acid amide, oleic acid amide, ethyl-distearic acid amide and silicone lubricants.

Fluorescent whitening agent: used to improve the whiteness and brightness of synthetic paper, make its appearance more beautiful, its content is between 0.2% and 0.5%.

Titanium dioxide: as one of the main components of whitening masterbatch, used to improve the whiteness of synthetic paper, its content in the masterbatch can reach a higher level, depending on the amount of whitening masterbatch added.

4. Other possible ingredients

In addition to the main ingredients mentioned above, BOPP synthetic paper may also contain other functional additives, such as stiffening materials, anti-reflection agents, etc., to further enhance its performance. The types and proportions of these additives are tailored to the specific use and performance requirements of the synthetic paper.

In summary, the main components of BOPP synthetic paper include polypropylene resin, functional fillers and a variety of additives. These components are combined by specific process formulations and processing methods to form BOPP synthetic paper products with excellent physical and mechanical properties, barrier properties and decorative properties.