What role does plasticizer play in PVC shrink film?

Plasticizer plays a vital role in PVC shrink film, and its detailed functions are mainly reflected in the following aspects:

The main function of plasticizer is to increase the softness and elasticity of PVC shrink film. In the molecular chain of PVC polymer, plasticizer can be inserted between the chains to lubricate and reduce friction, making the PVC shrink film more easily deformed when exposed to external forces and showing higher softness. sex and extensibility. This not only makes PVC shrink film easier to operate during packaging and processing, but also enhances its adaptability in various application environments.

Plasticizers can also improve the processability of PVC shrink films. During the film manufacturing process, the presence of plasticizers can reduce the melting temperature and viscosity of PVC polymers, making the material flow and shape more easily. This helps to improve production efficiency, reduce energy consumption, and reduce the scrap rate in the production process to a certain extent.

Plasticizers also have a positive impact on the physical properties of PVC shrink film. For example, it can improve the transparency of the film and make it more ornamental, which is particularly important for industries such as food and cosmetics that need to display the appearance of products. At the same time, plasticizers can also enhance the weather resistance of the film to a certain extent, allowing it to maintain good performance stability in outdoor environments.

Although plasticizers play an important role in improving PVC shrink film, we also need to be aware that some plasticizers may have potential health and environmental risks. Therefore, when selecting and using plasticizers, it is necessary to follow relevant safety standards and regulations to ensure that their harm to the human body is controlled within an acceptable range.

Plasticizers support the widespread use of PVC shrink film in the packaging industry by improving the softness, processability and physical properties of this material. At the same time, we also need to pay attention to the potential risks it may bring and take corresponding measures to prevent them.