Explained: Why is Polyester Satin Fabric So Soft?

Polyester satin fabric is a common synthetic fiber fabric that is soft and comfortable. But did you know? This softness is not inherent, but rather imparted to it during a certain stage of its production process.

Polyester satin fabric goes through a series of finishing stages after weaving to achieve the desired softness. These finishing stages involve specific treatment processes that are crucial in achieving the desired softness of the fabric. By undergoing these processes, polyester satin fabric can be transformed into a soft and luxurious material that is perfect for a variety of applications.

The first stage is the relaxation stage, which is one of the key steps in the finishing process. During the relaxation stage, the fabric undergoes treatments such as desizing, fiber shrinkage, and release of internal residual stress. Desizing removes starch and impurities from the fabric, ensuring its purity. Fiber shrinkage, achieved by controlling temperature and humidity, causes slight contraction of the fibers, thereby increasing the fabric’s elasticity and softness. At the same time, by releasing internal residual stress, the fabric is able to relax and loosen, further enhancing its softness.

Next is the weight reduction stage, another important step in achieving the softness of polyester satin fabric. In this stage, chemical solutions like sodium hydroxide are used to treat the fabric, aiming to reduce its weight. During this process, the fibers undergo decomposition, making them finer and creating gaps within the fabric. These gaps increase the fabric’s softness and give it a lighter and more pliable characteristic.

Through the relaxation and weight reduction stages, polyester satin fabric gradually acquires its desired softness. These finishing processes provide the fabric with ideal mechanical properties and tactile characteristics, making it a comfortable and popular choice.

In conclusion, during the production process of polyester satin fabric, the finishing stages are crucial in imparting its softness. The relaxation stage achieves softness and elasticity through desizing, fiber shrinkage, and release of internal residual stress. The weight reduction stage further enhances the fabric’s softness through fiber decomposition and gap formation. These production steps ensure that polyester satin fabric is widely recognized in the market and meets consumers’ demands for comfort and softness.


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