What is the color stability of BOPP color synthetic paper?

The color stability of BOPP color synthetic paper is affected by many factors, including raw material characteristics, production process, environmental factors and subsequent treatment. The following is some analysis of the color stability of BOPP color synthetic paper:

First, raw material characteristics

1.Polypropylene substrate: BOPP color synthetic paper is based on polypropylene, polypropylene itself has good chemical stability, in addition to strong acids, insoluble in other solvents, which makes its color in general is not easy to fade due to chemical action.

2.Pigment or dye: The color of synthetic paper is mainly determined by the added pigment or dye. The light resistance, weather resistance and chemical resistance of the pigment will directly affect the color stability of the final product. High-quality pigments usually have better stability and are able to maintain the freshness of the color for a long time.

Second, the production process

1.Bidirectional drawing process: The BOPP film is bidirectional drawing during the production process, which helps to improve the mechanical strength and transparency of the film, and also helps to evenly disperse the pigment, thereby improving the color stability to a certain extent.

2.Surface treatment: In order to improve the printing performance and adhesion of BOPP films, corona treatment is usually required. This treatment process may also have some impact on color stability, as corona treatment may change the chemical properties of the film surface, which affects the pigment's bonding fastness to the substrate.

Third, environmental factors

1.Light: Long-term exposure to strong sunlight, especially ultraviolet radiation, will cause changes in the molecular structure of the pigment, resulting in color fading. Therefore, the color stability of BOPP color synthetic paper depends to a certain extent on its light resistance.

2.Temperature and humidity: Extreme temperature or humidity conditions can also adversely affect color stability. High temperature may lead to accelerated aging of the pigment, while humidity changes may affect the bonding fastness of the pigment to the substrate.

Fourth, follow-up treatment

1.Printing and processing: In the printing process, the choice and use of ink will directly affect the color stability and appearance of the print. The use of high quality inks and reasonable printing processes helps to improve color stability.

2.Storage and transportation: Correct storage and transportation conditions are also important factors in maintaining the color stability of BOPP color synthetic paper. Avoid prolonged exposure to high temperatures, high humidity or direct sunlight.

In summary, the color stability of BOPP color synthetic paper is the result of a comprehensive factor. In order to improve the color stability, it is necessary to start from many aspects such as raw material selection, production process control, environmental factor control and follow-up treatment. In practical applications, the appropriate BOPP color synthetic paper products should be selected according to the specific needs and use environment, and the necessary measures should be taken to maintain its color stability.