Woven bags are primarily made from polypropylene (PP) rather than polyethylene (PE). PP is the standard material for reusable woven bags due to its durability, resistance to moisture, and suitability for food contact. PE, while cheaper and more flexible, lacks the same tensile strength and is less commonly used for woven applications.

The choice between PP and PE hinges on material properties and intended use. PP has a higher melting point (160–170°C) and better chemical resistance, making it ideal for heavy-duty or reusable bags. PE, with a lower melting point (115–130°C), is more prone to degradation and typically used for single-use plastic bags. Industry data from the American Plastics Council (2021) shows that 78% of reusable woven bags are PP-based, compared to 22% PE. Additionally, PP’s cradle-to-gate carbon footprint is 15% lower than PE, aligning with sustainability trends. PE’s lower cost (30–50% less than PP) limits its adoption for woven products requiring longevity. Regulatory standards, such as FDA guidelines for food-safe materials, further favor PP. For example, PP complies with FDA 21 CFR 177.1520, while PE is restricted to non-food applications. Thus, PP’s technical and regulatory advantages solidify its dominance in woven bags.