Core spun yarn wraps durable filament (spandex, polyester, nylon, etc.) at its core with a staple-fiber sheath, delivering stretch recovery, superior strength and softness.
What Is Core Spun Yarn?
Core spun yarn is made by twisting staple fibers around a continuous filament core (spandex, polyester, nylon, etc.) to create a shell-core structure. This yields a yarn that’s up to 50% tougher than regular spun yarn, with four-way elasticity and a smooth, uniform surface.
How Is Core-Spun Yarn Made?
- Filament Feed: Continuous polyester or spandex thread is tensioned and fed as the core.
- Sheath Wrap: Staple fibers (cotton, viscose, hemp, wool) are metered and wrapped around the core via modified ring-frame, rotor, or air-jet systems.
- Quality Testing: 3-stage inspection—raw, in-process, and finished—plus lab tests for tensile strength, elongation, and abrasion.
What are the performance advantages of core-spun yarn?
- 200–300% Stretch and Recovery—no bagging or sagging
- Soft, Breathable Finish—optimal for next-to-skin comfort
Product Series
We produce core spun yarns: core filament can be Spandex, DTY, PBT (as per requirement) covered by 100% cotton, 100% polyester, 100% viscose, cotton/polyester, polyester/viscose, cotton/viscose, and so on. This type of yarns are widely used for denim, weaving and knitting. Spandex core gives a stretch effect, making garment suitable for skin fitting, dimensionally stable and stretchable over repeat washes, good moisture absorbency properties. And filament core gives a high tenacity and long lasting.
100% cotton core spun yarn
Yarn Count: Ne 10s – Ne 60s (both carded and combed available)
Spinning Methods: Siro Core Spun, Siro Compact Core Spun.
Sheath Material: 100% cotton sourced from China, Brazil, US, Australia, and Pima cotton.
Core Material: Spandex filament in 20D, 30D, 40D, 55D, 70D, or 105D deniers,etc.
Spandex Brands: Lycra, Creora, Qianx.
Color Options: Raw white, reactive-dyed black and indigo for deep, fade-resistant shades.
Excellent stretch and stretch recovery from core such as spandex, T400, PBT, and other stretch polyester filament, high tensile strength and abrasion resistance from polyester or nylon filament core. Cotton sheath can provide soft, breathable and good hand feeling features.
Application: Denim, T-shirts, polos, lightweight knits, stretch and children’s wear requiring stretch, comfort and durability.
100% polyester core spun yarn
Yarn Count: Ne 10/1s – Ne 60/1s
Spinning Methods: Siro Core Spun; Siro Compact Core Spun
Core Material: Spandex filament in 20D, 30D, 40D, 55D, 70D, or 105D
Sheath Material: 100% polyester staple fiber
Spandex Brands: Lycra®, Creora®, Qianxi®
Color Options: Raw white; dope dyed blue, indigo and black.
Built-In Performance:
Excellent stretch and stretch recovery from core such as spandex, T400, PBT. High tensile strength and durability from the polyester sheath.
Applications: Denim, T-shirts, polos, lightweight knits, stretch and children’s wear requiring stretch, comfort and durability.
Blended core spun yarn
Yarn Count: Ne 10s – Ne 60s.
Spinning Methods: Siro Core Spun; Siro Compact Core-Spun
Sheath Blends: Custom blends of cotton/polyester, polyester/viscose, cotton/viscose or with modal, Tencel, lyocell, nylon, linen, hemp, wool, silk, and more.
Core Material: Spandex filament (20D, 30D, 40D, 55D, 70D, 105D) from Lycra, Creora, or Qianxi
Color Options: Raw white, reactive-dyed black and indigo.
Built-In Performance:
Balanced strength and softness via filament core + blended sheath. Enhanced stretch recovery and shape retention. Improved moisture management and drape from specialty fibers.
Ideal For: Denim, fashion knits, athleisure blends, eco-friendly collections, and any application needing customized hand-feel and functionality.
Dual core spun yarn
Dual core yarns often feature a combination of filaments like T400/PES (a polyester with elastic properties) and spandex (or elastane) as the core, wrapped by staple fiber sheath.
Yarn Count: Ne 10s – Ne 60s.
Core Material: Any tailor made solutions can provided according to your requirement/preference.
Elastic Recovery: The elastic core allows for greater stretch, elongation and recovery, making fabrics more comfortable and adaptable.
Enhanced Strength: The filament core contributes to the overall strength and durability of the yarn, according to IntechOpen.
Improved Dimensional Stability: The combination of core components helps to minimize shrinkage and dimensional changes in the finished fabric.
Functional Core Spun Yarns
Yarn Count: Ne 10s – Ne 60s.
Core Material: Spandex, polyester, nylon, PBT or other filament
Sheath Materials: Moisture-Wicking Polyester,Cooling Polyester,Moisture-Management Nylon,Anti-Bacterial Cotton,Thermo-Regulating Rayon,etc.
(Custom blends with other functional fibers on request).
Advanced Moisture Control: Rapid wicking keeps skin dry during high activity.
Active Cooling: Built-in cooling lowers fabric temperature by up to 2–3 °C.
Odor Control & Hygiene: Anti-bacterial sheath inhibits microbial growth.
Thermal Regulation: Rayon-based fibers adapt to body temperature for all-season comfort.
Durable Performance: Filament core maintains tensile strength and shape through repeated use.
Sustainable core spun yarn
Yarn Count: Ne 10s – Ne 60s.
Core Material: Polyester or spandex filament (20D, 30D, 40D, 55D, 70D, 105D) from Lycra, Creora, or Qianxi
Sheath Materials: Organic Cotton & BCI Cotton, European-Flax certificated Linen,
Hemp, Wool, Silk, Recycled cotton, Recycled polyeste, Recycled nylon.
Traceable & Certified: Full-chain transparency with GRS, OCS, BCI.
Durable & Versatile: Filament core maintains strength; natural sheath ensures comfort.
Ideal Applications:
Denim, Sustainable Fashion & Eco-Conscious Apparel
Organic Baby & Children’s Wear
Green Home Textiles
Ethical Activewear & Athleisure
Tell Me More
What sheath fibers can I choose?
You can select cotton, polyester, viscose, hemp, wool—or blends—for specific hand-feel, moisture management, or environmental credentials.
How fast can I get a sample?
We deliver lab-tested core-spun yarn samples in just 7 days —complete with test reports for strength, elongation, and colorfastness.
What certifications do you hold?
OEKO-TEX®, REACH, GRS, RCS—ensuring eco-safety and global compliance for apparel and home textiles.
Let’s Talk About Your Core Spun Yarn Needs
Whether you’re specifying counts, fiber blends, functional finishes, or sustainability credentials, our team is ready to craft the perfect core-spun solution for your project.
