What are the causes of nylon DTY yarn pilling

Nylon DTY (Drawn Textured Yarn) yarn is widely recognized in the industry for its excellent physical properties and wide range of applications. However, in actual use, pilling and fuzzing often cause troubles for consumers and manufacturers. In-depth exploration of the causes of these phenomena will not only help improve product quality, but also provide important reference for subsequent production and use.

Fiber property analysis
The physical structure of nylon fiber is relatively smooth, but in the production process of yarn, the fiber is affected by processing techniques such as stretching and twisting, which may cause tiny defects on its surface. These defects may become the source of pilling and fuzzing during the use of fabrics. In addition, nylon fiber has high strength and elasticity, which enables the yarn to maintain a certain shape when stretched or rubbed. However, excessive friction or stretching can cause fiber breakage, resulting in pilling and fuzzing.
Electrostatic properties are also an important factor affecting nylon fibers. In a dry environment, nylon fibers are prone to static electricity, adsorbing tiny particles around them to form "balls". These balls not only affect the appearance of the fabric, but may also further aggravate the breakage of the fiber.

Influence of fabric structure
The weaving method of the fabric has a direct impact on the friction degree of the yarn. Looser weaving structures are more prone to friction, leading to pilling and fuzzing. For example, knitted fabrics are more prone to pilling than flat fabrics. In addition, the density and thickness of the fabric also affect the occurrence of pilling and fuzzing to a certain extent. Thicker fabrics are prone to fiber wear due to the larger friction contact area, resulting in pilling and fuzzing.
The twist of the yarn also affects its overall stability and anti-friction ability. Yarns with lower twist are more likely to break during use, resulting in pilling and fuzzing.

Influence of the use environment
During wearing and use, friction is one of the main factors causing pilling and fuzzing. Especially in high-friction environments, such as backpacks and seats, the wear of the yarn will be significantly aggravated. In addition, friction, stirring and high-temperature drying during washing also cause damage to the fiber. Using improper detergents or excessively high washing temperatures will cause damage to the fiber surface, thereby increasing the risk of pilling and fuzzing.
The humidity of the environment has a significant impact on the performance of nylon fibers. In a high humidity environment, the friction of the fiber will increase, leading to an increase in pilling and fuzzing.

The key role of post-treatment process
The post-treatment process of nylon DTY yarn has an important impact on its performance. If the surface smoothness of the yarn is not effectively controlled during the post-finishing process, it may cause the fiber to be more prone to pilling during use. During the dyeing and finishing process, the type and concentration of chemicals used may also affect the performance of the yarn. For example, some softeners may improve the feel of the yarn in the short term, but long-term use may lead to increased adhesion of the fiber, thereby increasing the risk of pilling.