coutume Tissus en spandex en laine

How to control the uniformity of tension during spinning to ensure good coverage of spandex yarn? How does the twist of yarn affect the elasticity and strength of wool spandex fabric?

During the spinning process, the uniformity of tension is one of the key factors affecting the quality of yarn and subsequent fabric performance. For spandex yarn, due to its high elasticity, it is particularly important to control the uniformity of tension to ensure the uniform distribution of spandex fibers in the yarn, thereby achieving a good covering effect.
Raw material selection and pretreatment:
The quality of raw materials directly affects the spinning process. When purchasing raw materials, strict control is implemented at each stage to ensure the purity and consistency of the raw materials. For spandex fibers, varieties with high elastic recovery rate and good breaking strength should be selected, and surface grease and impurities should be removed through pretreatment to improve the cohesion between fibers, which is conducive to the stability of tension during spinning.
Spinning equipment and process optimization:
Modern spinning equipment such as compact spinning and siro spinning can effectively reduce uneven yarn thickness and tension fluctuations by accurately controlling processes such as feeding, drafting and twisting. The use of advanced technical equipment combined with intelligent control systems can achieve refined management of the spinning process. For example, by adjusting the roller spacing, optimizing the draft multiple and twisting speed, the spandex fiber can be ensured to be uniformly stressed during the spinning process, avoiding fiber breakage due to excessive tension or fiber slippage due to insufficient tension.
Tension monitoring and adjustment:
Tension sensors are installed on the spinning line to monitor the changes in yarn tension in real time, and process parameters are adjusted in time according to feedback data. Jin Kaiyue's production process, including raw material research and development, production and weaving, is equipped with advanced testing instruments to ensure that each process can reach the best state. For the production of spandex yarn, the tension control system can dynamically adjust the feeding speed and draft ratio to maintain the constant yarn tension and ensure the uniform coverage of spandex fibers in the yarn.
Environmental temperature and humidity control:
The temperature and humidity in the spinning workshop have a significant impact on the hygroscopicity, friction coefficient and electrostatic properties of the fiber, which in turn affects the uniformity of the yarn tension. Jin Kaiyue pays attention to the regulation of the production environment, maintains appropriate temperature and humidity conditions, and reduces the fluctuation of yarn tension caused by environmental changes.
Yarn twist refers to the number of turns of yarn twist per unit length, which directly affects the structural stability of the yarn and the physical properties of the fabric. In wool-spandex blended fabrics, it is crucial to reasonably set the yarn twist to balance the elasticity and strength of the fabric.
Elasticity effect:
Spandex fiber itself has high elasticity, but the increase in yarn twist will limit the relative movement between fibers, thereby affecting the elastic performance of the fabric. Appropriate twist can make spandex fiber play a better role in the fabric and maintain the elasticity and resilience of the fabric; however, too high twist will cause excessive twisting of the fiber, which will reduce the elasticity of the fabric.
Strength effect:
The strength of the yarn is mainly determined by the cohesion and friction between fibers. Appropriate twist can increase the contact area between fibers, improve the cohesion, and thus enhance the strength of the yarn. However, too high twist can cause fiber fatigue and damage, which will reduce the strength of the yarn. In wool-spandex blends, reasonably setting the twist can balance the strength and durability of the fabric. According to customer needs and fabric application scenarios, the yarn twist can be flexibly adjusted to ensure that the final product meets both elasticity requirements and has good strength and durability.
Fabric style and feel:
The twist of yarn also directly affects the style and feel of the fabric. Wool spandex fabric is known for its delicate touch, easy care and good wrinkle resistance. The appropriate twist can give the fabric a good surface gloss and soft feel while maintaining the stiffness and drape of the fabric. Jin Kaiyue's professional R&D team can customize yarns with different twists according to the specific needs of customers to meet the needs of different clothing styles, such as tights, sportswear, outerwear, etc., providing customers with a rich product selection.