Home » Products » Spandex Covered Yarn

Product Category

Spandex Covered Yarn

Spandex covered yarn, also known as spandex core yarn or spandex wrapped yarn, is a type of yarn that combines a core yarn with a covering of spandex fibers. It is created by wrapping a spandex filament or yarn around a core yarn using a covering machine.

The core yarn provides the structure and strength, while the spandex covering adds elasticity and stretch to the yarn. The spandex fibers are typically wrapped tightly around the core yarn, creating a yarn with enhanced stretch and recovery properties.

Spandex covered yarn is commonly used in the textile industry for various applications that require stretchability and comfort. It is often used in the production of stretch fabrics, such as sportswear, swimwear, activewear, and undergarments. The addition of spandex allows the fabric to stretch and conform to the body, providing a snug and flexible fit.

The advantages of spandex covered yarn include excellent elasticity, shape retention, and resistance to deformation. It allows for freedom of movement and provides a comfortable and supportive feel. Additionally, spandex covered yarn can be blended with other fibers, such as cotton or polyester, to create different types of fabrics with desired properties.

Spandex covered yarn is a popular choice for manufacturers looking to incorporate stretch and flexibility into their textile products. It offers versatility in terms of blending options and can be used in various fabric constructions to meet specific performance requirements.

Crafted with precision, this yarn features a core of spandex that is meticulously wrapped with high-quality fibers, resulting in a versatile material that can withstand rigorous wear and washing without compromising its integrity or appearance. The covering process not only enhances the yarn's durability but also improves its texture, making it suitable for direct contact with the skin. Our Spandex Covered Yarn is available in various deniers and colors, allowing designers to explore creative possibilities without limitations. Whether you're creating sleek activewear that moves with the body or elegant hosiery that offers gentle compression, this yarn provides the foundation for textiles that are as functional as they are stylish.

Spandex Covered Yarn Category Overview


Longtai’s Spandex Covered Yarn delivers stable elasticity, a smooth hand, and consistent runnability for knitting and weaving—especially socks and hosiery. We are based in Datang Town, Zhuji, Zhejiang, China. Our advanced covering lines and OEM/ODM capability let us match deniers, cover methods, and colors to your fabric or machine setup. With integrated raw materials, related socks machinery supply, 24-hour support, and a digital showroom, you get reliable quality and transparent, responsive service.


Product Types


Mechanical Covered (Conventional)


Mechanical covering wraps the spandex core under controlled twist for firm, round yarn lines and dimensional stability. It helps maintain gauge and fabric shape in socks, elastic rib, and narrow fabrics while balancing recovery with abrasion resistance.


Single Covered (SCY)


SCY offers a lighter profile and soft hand for fine-gauge socks, seamless garments, and lightweight jerseys. It provides cost-efficient elasticity and a clean fabric surface where moderate power and comfort are required.


Double Covered (DCY)


DCY improves strength, uniformity, and wear resistance for high-wear zones such as heel–toe sections and sports socks. It supports better dyeing consistency and fabric recovery when higher modulus is needed.


Air Covered (ACY)


ACY entangles cover filaments around spandex via air jets, delivering soft touch, low hairiness, and efficient bulk. It runs well on circular machines for seamless and activewear with good evenness and comfort.


Technical Specifications & Options


Specifications for Spandex Covered Yarn vary by construction and end use.


Core & Cover Materials


Core spandex: typically 20D–140D. Cover options: polyester, nylon, or cotton. Use polyester for durability and cost efficiency. Choose nylon for a softer touch and deeper shade. Pick cotton for a natural feel in casual socks and comfortwear.


Count, Construction & Twist


Common builds include 20D/75D, 40D/75D, 40D/100D, 70D/150D, and 140D/300D across SCY/DCY/ACY. Construction and twist are tuned for evenness, target power, and machine compatibility to reduce needle breaks and improve fabric yield.


Performance Targets


High elastic recovery, controlled elongation, low hairiness, and stable heat-setting for consistent stitch formation. Options can be configured for chlorine resistance, sweat fastness, and anti-pilling when paired with suitable cover materials and finishing.


Color & Dyeing


Supply in raw white for package dyeing, or ready-dyed black, yellow, and custom shades to match brand palettes. Color-matched batches help maintain tonal consistency across sock panels and elastic tapes.


Applications


Socks & Hosiery


Designed for rib cuffs, leg panels, and heel–toe reinforcement, this yarn helps maintain fit and shape through repeated wash and wear. It supports cotton-rich and synthetic blends for casual, dress, and athletic socks.


Seamless, Underwear & Activewear


For seamless garments and activewear, ACY and fine SCY provide soft touch and breathable stretch without excessive shine or grin-through. Balanced modulus keeps garments close-fitting while maintaining comfort in motion.


Narrow Fabrics, Elastic Tapes & Waistbands


DCY and higher-denier constructions build power and abrasion resistance for waistbands, elastic tapes, and narrow fabrics. Calibrated twist and cover ratios support edge stability during die-cutting and sewing.


Why Choose Longtai


Manufacturing Capability & Quality Control


Advanced covering and winding lines target tight evenness, precise denier control, and consistent package build to minimize machine stoppages. Each lot is inspected for elongation, tenacity, and appearance to support repeatable performance.


OEM/ODM Customization


We customize cover materials, denier combinations, twist, and colorways to match your knitting gauge and handfeel targets. Tailored packaging, cone types, and labeling support smooth line integration and traceability.


Integrated Supply Chain & Machinery Support


Beyond yarn, we supply related socks manufacturing machinery and equipment to help you ramp up and ensure process fit. Our integrated network supports stable raw materials and responsive lead times.


Global Delivery & 24-Hour Support


We ship to Germany, Italy, Bangladesh, Pakistan, India, Sri Lanka, Turkey, Myanmar, Australia, Brazil, Chile, Argentina, and parts of Africa. Our team offers 24-hour online support to recommend the right build for your application. Contact us to request a quote or a technical consultation.


Related Elastic Yarn Solutions


Polyester Rubber Covered Yarn for Socks (e.g., Polyester RCY 100#7575)


For added grip and power in cuffs and sports zones, this option provides strong elasticity and snap-back. It pairs well with cotton and polyester blends for durable, high-recovery sock designs.


Spun Polyester Yarn for Knitting & Weaving


Our spun polyester yarn complements this category in base fabrics, improving strength, pilling resistance, and dimensional stability. Available in raw white and colors to streamline planning and dyeing.


Selection Guide


Match Denier & Cover Type to End Use


Choose SCY for lightweight comfort, DCY for durability and power, and ACY for soft hand and knitting efficiency. Align core denier and cover count with machine gauge and your recovery target.


Handfeel, Recovery & Dyeing Considerations


Select polyester for durability and cost, nylon for softness and dye depth, and cotton for a natural touch. Consider finishing routes, heat-setting, and chlorine exposure for long-term performance.


Sampling & Customization Support


Request lab dips, trial cones, and tailored constructions to validate fabric feel and runnability before scaling. Our team can recommend SCY/DCY/ACY builds and denier sets aligned with your modulus and hand targets.


Digital Showroom & Origin


Transparent Manufacturing Display


Explore our digital showroom for a clear view of covering lines, process control, and packaging standards to assess consistency before bulk orders.


Brand & Location


Longtai is based in Datang Town, Zhuji City, Zhejiang Province, China, a socks manufacturing hub with an established ecosystem of materials and machinery. Origin: Zhuji, Zhejiang, China. Brand: Longtai. Colors: raw white, black, yellow, and custom.

Zhuji Longtai Import & Export Co., Ltd. is situated in Datang Town, Zhuji City, Zhejiang Province, China. The company's supply chain is equipped with advanced and
comprehensive production equipment as well as a highly skilled team of professionals.

Quick Links

Products

Contact Us

 WhatsApp: +86 13758587081
 Phone: +86-575-86052758
 Tel: +86-13758587081
  Add: Longtai Textile, Building 58, Yuwang Xincun, Datang Street, Zhuji City, Shaoxing City, Zhejiang Province, China.
 ​Copyright © 2024 Zhuji Longtai Import & Export Co., Ltd. All rights reserved. 浙ICP备2024088831号-1 | Sitemap | Privacy Policy | Supported by leadong.com