What is the function of food packaging bags?

Food packaging bags are containers used for preserving and storing food. Their main functions include:

**Protecting the Food:** Preventing physical damage such as squeezing, collisions, and exposure to light, while blocking air, moisture, and other elements to delay spoilage and maintain quality.

**Promoting Sales:** Attracting consumer attention through appealing patterns and text designs, highlighting product features, stimulating purchase desire, and boosting sales.

**Building Brand Image:** Utilizing printed brand identifiers and logos on the packaging, combined with innovative design to meet consumer psychology, thereby strengthening brand recognition and loyalty.