In recent years, as environmental concerns have intensified and consumers have become more conscious of sustainable consumption, the packaging bag industry has undergone a significant transformation. Recyclable materials, once a niche choice, have now become a mainstream trend in this sector. To fully grasp why they are gaining such momentum, we need to explore four key dimensions: the definition of recyclable materials, the types of recyclable materials suitable for packaging bags, their unique advantages for this industry, and their specific application scenarios in manufacturing packaging bags.