How Mylar Bags Protect Food Without Contaminating It

Food is preserved by controlling the environment surrounding it. If it is exposed to air, moisture, or light, it will spoil more quickly than if it was kept away from those three things and this will also dull the flavor and reduce the nutrition value of the food. Mylar bags are specifically made to prevent these three things from happening. That is why Mylar bags are used so widely when packaging food for commercial sales, and for long term food storage.

A Mylar bags' protective quality is due to its multi-layer construction. Each layer has a specific function for both the strength of the structure and the performance of its barrier. Together they form a sealed environment for the unit that slows oxidation and moisture from getting into the product, and does not react with the food inside.

The safety concerns associated with Mylar bags usually stem from whether items in contact with the food will transfer to the food. The inside of Mylar bags are made with food safe inner layers that are made to be chemically inert and stable over time. An inert surface acts as a barrier between the food in the bag and outside of the bag, which keeps the food safe from contamination while also benefitting from the barrier effect of the Mylar.

Another benefit of Mylar bags is how they protect food from damaging effects of light. Exposure to UV light can cause degradation of some types of food products, especially those that contain oils or are made up of sensitive compounds. The way that light reflects from the surface of Mylar reduces the amount of light that penetrates through the Mylar to the food inside the Mylar. Therefore food can maintain its quality over time without refrigeration.

Preserving food from absorbing odors from outside of the Mylar bag can also be beneficial. Mylar bags can contain the smells of the contents from inside of the bag, therefore they can preserve both the integrity of the product and help maintain a clean environment for those products that require a fresh product and/or a strong scent.

For an in-depth explanation of how these protective and safety features may relate to safety, and your potential health concerns, refer to the complete article “Are Mylar Bags Toxic?”