What causes spandex covering yarn to break spandex
Time of Release：
2022-11-21 10:11
source：
1, is the spandex is too thin, can be replaced by thicker.
2. Spandex covered yarn is an elastic yarn formed by covering extended spandex yarn with long or short fiber yarn in a spiral shape.
The strength elongation of air coated yarn increases with the increase of the predrafting ratio of spandex. When the drawing reaches a certain value, the retraction of spandex makes the outer fiber curl. When the predraft multiple is increased appropriately, the percentage of spandex is reduced and the curling degree of outsourcing fiber is large. However, when the draft is too large, the spandex deformation amplitude is close to the critical value of deformation, which will reduce the strength and elongation of the covered yarn, but is beneficial to the uniform drying of the covered yarn.
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Spandex coated yarn is spandex cored yarn. Spandex has good elasticity, but poor wear resistance, so it is used as core yarn, and then spun into core-spun yarn or wrapped yarn with other types of fibers. Other fibers can be cotton, chemical fiber, etc
Spinning process of spandex coated yarn
In the spinning process, SpandexStretch is an important process parameter, which affects the elasticity of CoveredYarn and fabric,
The main classification of spandex
(1) Conventional spandex filament: It is a new type of fiber with many excellent textile properties, with good elasticity and elastic recovery rate, fine size, high strength, small specific proportion, excellent dyeing and fastness, etc.
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