Question 11 (Textile Technology & Fibre Science)
Work factor of a perfectly elastic yarn is
Frequently Asked Questions | FAQs
What is elastic yarn?
Elastic yarn, also known as stretch yarn or spandex, is a type of synthetic fiber that is characterized by its ability to stretch significantly and then return to its original shape. It is widely used in the textile industry to create fabrics that are comfortable, form-fitting, and have good elasticity.
Elastic yarns are typically made from a synthetic polymer called polyurethane, which is known for its excellent elasticity and resilience. The yarn is produced by spinning the polyurethane into fibers that are then blended with other fibers, such as cotton, polyester, or nylon, to create a fabric with the desired characteristics.
The amount of elastic yarn used in a fabric can vary depending on the desired level of stretch and the type of garment being made. For example, athletic wear and undergarments often contain a higher percentage of elastic yarn to provide a close, comfortable fit, while other types of clothing may use elastic yarn only in certain areas, such as cuffs or waistbands.
Overall, elastic yarn is a versatile material that offers a range of benefits to the textile industry, including improved comfort, fit, and durability.
What is work factor?
Work factor is defined as the ratio of the work of rupture to multiplied of breaking load and breaking extension.