Why is the dimensional stability of Polyester Spandex Loose Knit Fabric an advantage?

1. Dimensional stability of polyester
Polyester is a synthetic fiber with strong crystallinity. Its molecular chains are arranged closely and connected by interaction forces such as van der Waals forces and hydrogen bonds. This structure gives polyester fibers strong dimensional stability. Specifically, after being stretched or compressed by the outside world, polyester fibers can quickly return to their original shape and are not prone to excessive stretching or shrinking, thus maintaining the shape of the fabric.

The dimensional stability of polyester is manifested in that the fabric hardly undergoes significant changes in size when washed, worn, and exposed to the outside world. Especially in the case of frequent washing, polyester fabrics can effectively resist the absorption of water and temperature changes during washing, and maintain the original size of the clothing.

2. Contribution of spandex to dimensional stability
As an important component of Polyester Spandex Loose Knit Fabric, spandex is known for its extremely high elasticity. It can be stretched to several times its original length and quickly return to its original shape after the external force is removed. Although spandex itself has strong stretchability, its combination with polyester significantly improves the dimensional stability of the fabric.

Spandex plays a role in elastic recovery in the fabric. When the fabric is stretched by external force, the spandex fiber can provide instant recovery force, so that the fabric will not deform or change in size after stretching. Compared with single polyester fabric, polyester spandex blended fabric can maintain dimensional stability under different forms of stretching, compression and friction.

3. The influence of knitting structure on dimensional stability
Polyester Spandex Loose Knit Fabric adopts advanced knitting technology, which not only improves the elasticity and flexibility of the fabric, but also provides guarantee for its dimensional stability. During the knitting process, the interweaving of fibers makes the fabric have a certain stretchability, while ensuring the recovery and dimensional stability after stretching.

The loose knitting structure can evenly distribute the external force during stretching, so that the fabric is not easy to deform locally when stretched. And this evenly distributed structural design helps the fabric to maintain a consistent size during use, avoiding excessive wrinkles, shrinkage or elongation.

4. Enhancement of dimensional stability by heat setting treatment
During the production process of Polyester Spandex Loose Knit Fabric, heat setting treatment is usually carried out. Heat setting treatment fixes the fiber molecular structure in the fabric in a specific form through high temperature treatment, which effectively improves the dimensional stability of the fabric. During the heat setting process, the fiber chain of the fabric undergoes a certain reorganization, making the fiber structure more compact, thereby improving the durability and dimensional retention of the fabric.

This treatment ensures that the fabric is not easily affected by external factors during use, and can maintain its original size and shape during long-term use, which is particularly suitable for high-performance clothing that needs to be worn and washed for a long time.

5. Advantages of dimensional stability in practical applications
The dimensional stability of Polyester Spandex Loose Knit Fabric has made it widely used in many fields. Especially in sportswear, casual wear, work clothes and other clothing that need to be worn and washed frequently, good dimensional stability greatly extends the service life of the clothing and ensures that the wearer can always enjoy a comfortable and fit wearing experience.

Sportswear is often stretched and compressed during intense exercise. The dimensional stability of Polyester Spandex Loose Knit Fabric ensures that the garment maintains its original size and appearance even after multiple washes and long-term wear, avoiding discomfort caused by fabric deformation or shrinkage.

Similarly, workwear and outdoor clothing are often used in harsh working environments, and frequent wear and stretching pose challenges to the dimensional stability of the fabric. Polyester Spandex Loose Knit Fabric can effectively resist the influence of these external forces, ensuring that the garment always maintains a good fit and comfort.