Can expired BOPP colored synthetic paper still be used?

Expired BOPP color synthetic paper is not recommended for use. Although expired paper may not have undergone significant physical changes, its performance and quality may have been affected. The following is a detailed analysis of the usage issues of expired BOPP color synthetic paper:

1、 Performance degradation

The performance of BOPP colored synthetic paper will gradually decline over time during production and storage. This includes physical properties such as tensile strength, tear strength, and wear resistance of the paper, as well as chemical properties such as stability and color consistency of the thermosensitive layer. The performance degradation of expired paper may lead to poor printing results, unclear color rendering, blurry handwriting, and other issues, thereby affecting the usability.

2、 Color change

The color stability of BOPP colored synthetic paper is one of the important indicators for evaluating its quality. However, expired paper may fade or discolor due to prolonged exposure to environmental factors such as light, heat, and moisture. This color change not only affects the aesthetics of the paper, but may also affect its performance in specific application scenarios.

3、 Safety hazards

Using expired BOPP colored synthetic paper may pose a safety hazard. For example, when packaging sensitive products such as food and medicine, if the paper contains harmful chemicals to the human body, or if the chemicals change due to expiration, it may pose a threat to human health. In addition, expired paper may also produce harmful substances during the printing process, posing potential hazards to the environment and human health.

4、 Not in compliance with regulations

In many industries and application scenarios, there are clear regulations and standards for the quality and performance of BOPP color synthetic paper. Using expired paper may not meet these regulations and standards, resulting in substandard product quality or inability to meet customer needs.

In summary, in order to ensure the effectiveness of use and product quality, as well as to safeguard human health and environmental safety, it is recommended not to use expired BOPP color synthetic paper. When purchasing and using paper, attention should be paid to checking the production date and shelf life, and using it up within the specified time.