With the improvement of living standards, people's requirements for the performance of textile products used in clothing are no longer limited to wear resistance, but also focus on the comfort and aesthetics of fabrics. Different types of textiles have different requirements. For general woven and knitwear used for clothing and daily life, in addition to patterns and colors that meet consumer demands, innerwear fabrics need to have good softness characteristics, while outerwear fabrics need to maintain necessary shape and appearance, with a certain degree of stiffness and drape. The ability of a fabric to resist changes in its bending direction is called flexural rigidity. Flexural rigidity is often used to evaluate the softness of a fabric and also determines its aesthetic draping qualities; fabrics with high flexural rigidity feel stiffer. Furthermore, for outdoor sports textiles (such as sleeping bags and tents) and industrial textiles (like airbag fabrics or various conveyor belts) that are frequently folded, the bending properties of the fabric directly affect their durability and usability.