Overspun

Overspun refers to a phenomenon in textiles where yarn or thread has been twisted too many times. This excessive twisting can affect the properties of the yarn, making it weaker, more brittle, and prone to breakage. The optimal amount of twist is crucial for yarn strength and its suitability for various applications, such as weaving or knitting.

The process of spinning involves twisting fibers together to create a continuous strand. The degree of twist is measured by turns per inch (TPI) or turns per meter (TPM). When a yarn is overspun, it exceeds the ideal TPI for the given fiber type and intended use. This can occur due to errors in the spinning machinery, incorrect settings, or operator oversight.

Overspun yarns often exhibit a distinct appearance, appearing more wiry or stiff than yarns with appropriate twist. They may also be less lustrous. In fabric production, overspun yarns can lead to increased yarn waste, machine downtime, and defects in the finished textile. Therefore, quality control measures in spinning mills often include regular checks of yarn twist to prevent overspinning. The process of adding twist is essential for binding fibers together and imparting strength, but exceeding the necessary level can have detrimental effects on the yarn and the resulting fabric.