What adds strength to the yarn during the spinning process?

During the spinning process, strength is added to the yarn primarily through the alignment and twisting of the fibers. As fibers are drawn together and twisted, they interlock, increasing friction and cohesion, which enhances the overall tensile strength. Additionally, the spinning process can remove excess moisture and impurities, further contributing to a stronger final product. The choice of fiber type and spinning technique also plays a crucial role in determining the yarn's strength.