1. The document provides an overview of spandex or elastane fiber, including its history, production process, properties, and uses. 2. Spandex is a synthetic fiber known for its elasticity, made from a polymer of polyurethane. It was developed in the 1950s and revolutionized the clothing industry. 3. The production process involves mixing prepolymers like a flexible macro-glycol and stiff diisocyanate, then spinning and curing the polymer solution to form elastic fibers.