Spandex is a synthetic Fiber, also known as Lycra, Spandex, etc., and its chemical name is Polyurethane Fiber. Spandex fabric is mainly made of spandex fiber, or blended with other fibers (such as cotton, polyester, nylon, etc.) to enhance the elasticity and resilience of the fabric.
1, eliminate internal stress: in the weaving process, spandex fiber will produce a certain internal stress. These internal stresses, if not eliminated, can lead to permanent creases or deformations in the fabric during post-processing or use. Through styling treatment, these internal stresses can be eliminated in the process of fabric relaxation, making the size of the fabric more stable.
2, improve elasticity and resilience: Spandex is a synthetic fiber, also known as elastic fiber. Through heat setting treatment, the molecular chain of spandex fiber will be broken, recombined and crystallization, forming a more orderly structure, thereby improving the elasticity and resilience of the fiber.
This allows spandex fabric to better maintain its shape during wearing, improving the comfort and beauty of wearing.
3, improve dyeing and printing effect: For spandex fabrics that need to be dyed or printed, styling treatment can also improve its dyeing and printing effect. The impurities and grease wax on the fabric are removed by pre-treatment, and the whiteness, wetting and water absorption of the fabric are increased, so as to improve the uniformity and fastness of dyeing and printing.
1, avoid fiber damage: spandex dry heat resistance temperature is about 190 ° C, more than this temperature, the strength of spandex will be significantly reduced, and may even lead to fiber melting or deformation. Therefore, when styling, the temperature must be strictly controlled to avoid exceeding the heat resistance limit of spandex.
2, prevent fabric yellowing: if the setting temperature is too high, it will not only cause damage to spandex fiber, but also may make the fabric surface yellowing, affecting the appearance of the fabric quality. In addition, high temperatures may also degrade impurities and auxiliaries on the fabric, resulting in markings that are difficult to remove.
3, protect other fiber components: In blended fabrics, spandex is often blended with other fibers (such as polyester, nylon, etc.). The heat resistance of these fibers varies, and if the setting temperature is too high, it may cause damage to other fibers. Therefore, in the styling treatment, it is necessary to consider the heat resistance of various fibers and choose the appropriate temperature range.
Spandex fabrics need to be shaped to eliminate internal stress, improve elasticity and resilience, improve dyeing and printing effects. At the same time, during the styling process, the temperature must be strictly controlled to avoid exceeding the heat resistance limit of spandex (generally not exceeding 195 ° C) to protect the fiber from damage and ensure the appearance quality of the fabric.
we are a manufacturer of safety clothing, flame retardant clothes anti-static fabric and work clothes, if you need, please tell me your needs.
