The storage life of plastic packaging bags can vary depending on several factors, including the type of plastic, the conditions in which they are stored, and the contents of the bags.
In general, most plastic packaging bags have a shelf life of 1-2 years, but this can vary depending on the specific type of plastic and the conditions in which they are stored. For example, some types of plastic, such as polyethylene, are more resistant to degradation and may have a longer shelf life than other types of plastic.

The conditions in which the plastic packaging bags are stored can also affect their shelf life. Exposure to heat, moisture, and sunlight can accelerate the breakdown of plastic, which can lead to a shorter shelf life. On the other hand, storing plastic packaging bags in a cool, dry place away from sunlight can help to extend their shelf life.
The contents of the plastic packaging bags can also affect their storage life. Some types of food, such as those high in fat or acidity, can interact with the plastic and cause it to break down more quickly, which can shorten the shelf life of the bags.
Overall, it is important to follow the manufacturer's recommendations for storing plastic packaging bags and to use them within the recommended shelf life to ensure their effectiveness and safety. Additionally, proper disposal of plastic packaging bags is important to minimize their impact on the environment.