Why do we need to control the shrinkage rate of PVC cast shrink film?

There are several important reasons to control the shrinkage of PVC cast shrink film:

Shrinkage rate is one of the key indicators of the performance of PVC cast shrink film. It directly affects the dimensional changes of the film after heating, thus determining its application effect in packaging, label making and other fields. If the shrinkage rate is unstable or uncontrollable, it may cause problems such as deformation of packaging materials and uneven labeling, which will affect the overall aesthetics and market acceptance of the product.

Controlling the shrinkage rate helps ensure the consistent performance of PVC cast shrink film in different application scenarios. Different application scenarios have different requirements for the shrinkage performance of the film. For example, food packaging requires a higher shrinkage rate to ensure that the food is tightly wrapped, while some electronic product packaging may require a lower shrinkage rate to avoid damage to the internal products. pressure. Therefore, by controlling the shrinkage rate, the specific needs of different industries for the performance of PVC cast shrink films can be met.

Controlling shrinkage also helps improve production efficiency and quality stability. In the film production process, if the shrinkage rate can be stably controlled, the scrap rate and defective product rate in the production process can be reduced, and the overall production efficiency can be improved. At the same time, stable shrinkage can also reduce the difficulty of adjustment during post-processing and improve production efficiency and quality stability.

By accurately controlling the shrinkage rate, the application advantages of PVC cast shrink film in packaging, label production and other fields can be fully utilized to meet the needs of the market and customers.