What are the main components of BOPP color synthetic paper?

The main components of BOPP (Biaxially stretched polypropylene) color synthetic paper mainly include polypropylene resin and other functional additives. Here is a detailed analysis of its main components:

1. Polypropylene resin

Basic material: Polypropylene resin is the main basic material of BOPP color synthetic paper, which is made of partially crystallized polymer of propylene monomer through polymerization. Polypropylene resin gives BOPP film good physical and mechanical properties, such as high strength, high gas resistance, printing performance and tear resistance.

Proportion: In the special masterbatch of BOPP synthetic paper, the content of polypropylene resin usually accounts for a relatively large proportion, and the specific proportion may be adjusted according to the product formulation and performance needs, generally between 27% and 40%.

2. Functional additives

In addition to polypropylene resin, BOPP color synthetic paper also contains a variety of functional additives to enhance its overall performance and application results. These additives may include:

Functional fillers: used to improve specific properties of the film, such as barrier, strength, etc. In the masterbatch of BOPP synthetic paper, the content of functional fillers may be as high as 58% to 70%.

Antioxidant: used to prevent oxidative degradation of polypropylene resin during processing and use, improve the stability and service life of the film. Its content is generally between 0.2% and 0.5%.

Lubricants: Help to improve the processing properties of the film and reduce friction and wear during processing. Its content is usually between 0.2% and 1%.

Fluorescent whitening agent: used to improve the whiteness and brightness of the film, so that the color synthetic paper has a more vivid and bright color effect. Its content is also low, generally between 0.2% and 0.5%.

Titanium dioxide: used as a white pigment, it can further enhance the whiteness and hiding power of the film. The content in BOPP synthetic paper may be between 0.5% and 1.5%.

3. Other ingredients

In addition to the main ingredients mentioned above, BOPP color synthetic paper may also contain other ingredients used to regulate its properties or improve processing conditions, such as colorants, anti-stick agents, etc. The specific types and amounts of these ingredients are adjusted according to the specific needs and formulations of the product.

In summary, the main components of BOPP color synthetic paper are polypropylene resin and a variety of functional additives. These components work together to give BOPP color synthetic paper good physical and mechanical properties, barrier properties, printing properties and rich color effects. It should be noted that the specific proportions and types of the above ingredients may also vary due to differences in the formulations of different manufacturers and products.