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Chief among them are the nature of the food itself, as different types of cuisine exhibit varying degrees of resilience against microbial growth and degradation. Additionally, the ambient temperature where the vacuum-sealed packages are stored plays a pivotal role; cooler temperatures significantly slow down the spoilage process, while warmer environments accelerate it.

The evolution of food packaging has required advances in multilayer plastic film technology, which has moved on from the traditional 5/7 layer design to more complex structures over the last few decades.

The thickness of flexible packaging film can vary significantly depending on its intended application, packaging requirements, and cost considerations. There is no universal standard for the thickness of flexible packaging film, as it can range from a few micrometers (μm) to several hundred micrometers.

Thermoforming is a highly efficient technology that uses pressure forming or vacuum forming methods to transform films or sheets into complex mould designs. The packaging industry harnesses the power of this thermoforming film packaging process to produce a variety of packaging solutions such as containers, tubs and speciality food barrier films.