The core-spun yarn is a two-component structure of core and sheath. Core spun yarns feature a central core wrapped with short fibers. These are produced in one operation by simultaneously feeding core filaments and staple fibers to the transfer rollers of the spinning frame. The core-spun yarn has the following advantages:
1. The development of ring-spun core-spun yarns opens up new products.
2. It has high performance due to its extraordinary strength.
3. Ideal wash and wear properties and permanent press.
Application of core spun yarn:
1. Core spun yarns are essentially refractory fibers.
2. Create fire barriers for mattresses and furniture.
Many spinning systems successfully produce core yarns. Each system has its own characteristics. Conventional ring spinning is simple and economical, but the centering is difficult, major unwinding problems can occur in the subsequent process, and the core filaments can be twisted. In the Dref III, the core positioning can be set accurately and is used for the production of industrial and conductive yarns.
In the traditional core spinning system, the yarn is only twisted, the coverage of the core is not high, and the problem of stripping may occur in the subsequent machining process. Corespun yarns produced by SRRC core spinning systems consist of a central core of specific filaments or staple fibers that is almost coaxial and completely wrapped with cotton on any other staple fibers. It is claimed that a high degree of coherence is obtained between the constituent fibers. The core pack acts as a twist reducer, which helps the sheath fibers cover the filaments.
Core spinning is a process by which fibers are twisted around an existing yarn (filament or staple) to create a sheath-core structure, where the already formed yarn is the core. Usually, continuous filament yarn is used as the core and short fibers are used as the sheath. Core spun yarns are used to enhance the functional properties of fabrics such as strength, durability, and stretch comfort.