Skip to content Skip to footer

What is Core Spun Yarn? and How It’s Changing Indian Textiles

Core Spun Yarn

In this fast-forwarding world, innovations have touched the textile industry, bolstering functionality and change go hand-in-hand. The revolutionary approach to ensure optimum strength, comfort, and durability in one fabric, made the inception of core-spun yarn noteworthy. From everyday wear to high-performing clothing, this yarn possesses a wide range of applications as discussed in this blog.

What Is Core Spun Yarn?

Core spun yarn refers to a composite yarn in which the middle core is wrapped with a fine sheath of different fibers. Primarily, this yarn is made by twisting and wrapping a natural or synthetic staple fiber around the core filament of polyester, spandex, or nylon.

The yarn’s blended filament has advantages of both the core and sheath fiber. This means that the combination will offer the stretch and strength of synthetic fiber, blending with the comfort of natural fibers like cotton.

  • Understanding the Key Characteristics of Core-Spun Yarn 

Some of the core characteristics of this yarn include: 

  1. Increased durability and strength
  2. Offers better elasticity
  3. Superior comfort and appearance 
  4. Improved resistance to pilling 

Core Spun Yarn After manufacturing

How is Core Spun Yarn Made? 

There is a specialised spinning process used to manufacture core spun yarn where two types of fibers are seamlessly combined. Let us delve into the manufacturing process, in brief, to understand how the core and sheath fibers are blended to achieve the desired result: 

  1. Selection of Core Fiber 

At Sitaram Spinners, core selection is done through rigorous quality control to match the end-use — from performance apparel to industrial fabrics. Some of the common core materials include: 

  • Spandex – for elasticity 
  • Polyester – for strength and durability 
  • Nylon- for flexibility and resilience 

2. Choosing the Sheath Fiber 

In this next step, a sheath or covering fabric is chosen which is usually of natural or synthetic staple fiber including: 

  • Cotton – for comfort and softness
  • Wool – for warmth
  • Viscose/Rayon – for lustre and drape
  • Polyester staple fiber – for quick drying and wrinkle-proof

3. Process of Spinning 

There are typically either of the two types of spinning processes involved – ring spinning and air-jet spinning methods. 

  • Ring Spinning: In this method, the core filament is fed through the center of the drafting area, while the sheath fibers are drafted and twisted around it. The twist binds the sheath to the core, producing a stable, strong yarn.
  • Air-jet Spinning: In this method, high-speed air streams are used to wrap the sheath fibers around the core, which results in yarns with reduced hairiness and restores evenness.
  1. Finishing & Winding

Once the spinning process is completed, the yarns are wound into cones. Depending on the type of final fabric manufacturers are trying to achieve, this process may involve more processes like heat-setting, dyeing, or lubrication.

Core Spun Yarn Manufacturing Process

Types of Core Spun Yarn

Generally, core spun yarn is classified based on the blending of materials used to achieve a desired fabric outcome: 

  1. Cotton-covered spandex is commonly used in denim jeans and leggings 
  2. Polyester-covered spandex is used in sportswear and activewear
  3. Cotton-covered polyester is ideal for making casual wear as if offers softness and durability
  4. Wool-covered nylon combines warmth with stretch and is most suitable for winter sports garments

Applications of Core Spun Yarn in Textiles 

The versatility of core spun yarns is used across different textile production to achieve the desired results:

  • Denim & Stretched Clothing

Our core-spun yarns are commonly used by garment manufacturers across India for crafting high-durability uniforms and stylish yet functional denim. By combining spandex as the core and cotton as the sheath, manufacturers can create jeans that offer a better fitting and are comfortable. Moreover, this offers better stretch and recovery without compromising its shape and natural cotton feel.  

  • Sportswear & Activewear

Since high-performing sports garments are in great demand, the use of core-spun yarn is on the rise. The combination of spandex or nylon with polyester or cotton makes the fabric better absorbing or breathable. This ensures the fabric is lightweight, stretchable, and durable, making it suitable for yoga wear, gym clothing, etc.

  • Workwear & Uniforms 

Uniforms and workwear should be durable, and easy to maintain. Thus, most uniforms are made from core-spun yarns which are blended with polyester filaments and cotton sheaths. The strength of the synthetic fabric and the breathability of cotton make the final fabric suitable for heavy use. 

  • Technical & Domestic Textiles 

Apart from the above-mentioned applications, core-spuns are also used in industrial or protective and home textiles. Thus, properties like durability, comfort, strength, and heat resistance enhance the performance of fabric, making it ideal for multi-purpose use. 

Benefits of Using Core-Spun Yarn in Different Textiles

Here are some of the benefits discussed of using core-spun yarn in different textiles: 

  • Ensuring Better Durability 

The core filaments in this yarn offer high strength and abrasion resistance, ensuring better durability. 

  • Offers Better Fit & Comfort

The stretch factor in this yarn conforms to any body shape and helps in offering better fit and comfort. 

  • Moisture Management

The versatility of this yarn can be blended to tailor properties like wicking sweat or water absorbency. 

  • Enhanced Appearance 

Clothing made with this type of yarn involved less surface fuzz and piling as compared to any other traditional yarn, ensuring a better appearance. 

  • Reduction in Shrinkage 

While manufacturing this yarn, the process involves blending synthetic cores with natural fibers that help in maintaining shape even after repeated washing. 

Final Takeaways

Core spun yarn is considered a major advancement in yarn engineering, combining multiple fibers into one strong fabric that delivers functionality, comfort, and aesthetics. From fashion to industrial applications, its ability to adapt to the needs of various sectors has made it a staple in modern textiles.

Acknowledging this textile innovation, Sitaram Spinners Pvt. Ltd. is a pioneer in manufacturing different types of superior-quality yarns including core-spun. With years of expertise in delivering yarns across the country, we have gained the trust of hundreds of fashion houses and retailers. 

Thus, we are keeping our inventory on the peak as core-spun is poised to play an even greater role in shaping the future of functional and performance-oriented fabrics.

Explore how Sitaram Spinners can elevate your textile products with high-performance core-spun yarns. Contact us or browse our yarn range today.