What is the purpose of using a barrier material in packaging items?

Using a barrier material in packaging items primarily serves to provide moisture resistance. This type of material acts as a protective layer that prevents moisture from entering or leaving the package, which is critical for preserving the integrity of the products inside. Moisture can lead to deterioration, spoilage, or degradation of various items, particularly food and pharmaceuticals, making it essential to use materials that effectively block moisture penetration.

By ensuring that the items are shielded from moisture, barrier materials help maintain quality, extend shelf life, and enhance the overall performance of the packaged goods. This is especially important in environments with varying humidity levels, where unprotected items would be susceptible to damage or spoilage.

In contrast, enhancing product visibility, indicating weight, or assisting with label placement do not directly relate to the primary function of barrier materials, which focuses primarily on creating a protective environment around the packaged items.