A) Main Spinning: The spandex fiber is blended with other fibers, for example nylon or polyester, and fed into a device referred to as a core spinning equipment. This device spins the Main yarn by wrapping the spandex fiber within the central core, making sure a uniform and ongoing coverage. https://doublecoveredyarn09864.blogtov.com/13162710/facts-about-rubber-covered-yarn-revealed