In the textile industry, Polyester Yarn is a widely used synthetic fiber. However, during the weaving process, the shrinkage of Polyester Yarn has been a problem for manufacturers.
First of all, it is key to understand the cause of shrinkage. The shrinkage of Polyester Yarn is mainly caused by the expansion of the fiber after moisture absorption, and the stretching and heat during weaving and finishing. Therefore, to control the shrinkage, it is necessary to start from the selection of fibers, weaving process and finishing.
In terms of fiber selection, Polyester Yarn with lower shrinkage can be selected. Some specially treated fibers, such as pre-shrunk fibers, can effectively reduce shrinkage. In addition, blended fibers can be selected to mix Polyester Yarn with other fibers to improve its shrinkage performance.
The weaving process also has an important influence on shrinkage. During the weaving process, the tension and temperature should be controlled. Too high tension will cause the fiber to overstretch and increase the shrinkage rate; while too high temperature will cause the fiber to shrink thermally, which will also increase the shrinkage rate. Therefore, it is necessary to reasonably adjust the weaving process parameters according to different fiber and fabric structures.
Finishing is the key link in controlling the shrinkage rate of Polyester Yarn. Common finishing methods include pre-shrinking and shaping. Pre-shrinking can shrink the fiber to a certain extent through mechanical action, thereby reducing the shrinkage rate. The shaping treatment can make the fiber structure more stable and reduce the shrinkage rate by heating and stretching.
In addition, when using Polyester Yarn for weaving, some other measures can be taken to control the shrinkage rate. For example, during cutting and sewing, be careful to avoid over-stretching the fabric; when washing and maintaining, follow the correct method and avoid using high-temperature water and strong detergents.