Elastane Air Covered Yarn

Supply Ability &Packaging &Delivery

PRODUCT APPLICATION

1.What are the difficulties in making ACY?

A: 1. Under the circumstance that polyester yarn spunking process has been selected unchanged, different stretch ratio of spandex yarn will affect the content of spandex yarn in finished empty covered yarn: small stretch ratio with high content, large stretch ratio with low content.
2. The cloth woven with high content has large elasticity, large weft shrinkage and small door width, whereas the cloth woven with low content has small elasticity, small weft shrinkage and large door width.
3, but on the other hand, the drafting ratio is large, the retraction of the yarn itself is large, will also make the door width of the cloth woven after the path becomes smaller, on the contrary, the drafting ratio is small, the retraction of the yarn itself is small, will also make the door width of the cloth woven after the path becomes larger.
4. Therefore, this is a game process, and the appropriate drafting ratio must be selected according to the requirements of the customers in the back channel. However, it must be noted that the optimal drafting ratio of spandex wire should be controlled between 3.2-3.6.
5. In addition, the stretch ratio of spandex will also directly affect the raw material cost of finished yarn. The stretch ratio of large spandex is low in cost, while the stretch ratio of small spandex is high in cost.
6. Polyester ammonia empty covered yarn has two different components, polyester and spandex. Besides polyester silk, it is necessary to pay attention to the influence of spandex silk on dyeing properties.
7. The main factor affecting the dyeing performance of spandex is the resilience of spandex. For example, the same spandex content of 20D will affect the dyeing depth of finished silk due to the difference in resilience of spandex itself.
8. To determine whether the depth of dyeing is caused by polyester silk or spandex, just pull out the spandex from the dyed yarn with a deep or light color and dye it. If it still has a deep or light color, it is polyester silk, while if it no longer has a deep or light color, it is spandex.
9. Because of the difficulty in dyeing spandex, dyeing problems are mostly caused by the difference in the resilience of spandex. If customers have higher requirements for dyeing, it is necessary to choose spandex with uniform resilience and stable quality as raw materials.