The tensile energy of about 3000 psi is a normal specification parameter to the specialized parameters for one-covered spandex yarns; this assures sufficient strength but retains versatility and a smooth hand experience. Spandex bare yarn, also known as elastane or elastic polyurethane fiber, can be a artificial elastic fiber highly https://covered-elastic-yarn37135.aioblogs.com/85054546/the-basic-principles-of-covered-spandex-yarn